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stefanbschneider

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[ "Since directional antennas must be pointed at the transmitting antenna, this is a problem when the television stations to be received are located in different directions. In this case two or more directional rooftop antennas each pointed at a different transmitter are often mounted on the same mast and connected to one receiver; for best performance filter or matching circuits are used to keep each antenna from degrading the performance of the others connected to the same transmission line. An alternative is to use a single antenna mounted on a \"rotator\", a remote servo system that rotates the antenna to a new direction when a dial next to the television is turned. \n", "Panel antennas are common at Ultra high frequency (UHF) frequencies, where they are often used for cellular/mobile base stations or wireless networking due to their size and directional properties. At VHF frequencies, such an antenna would be impractically large for most receiving applications unless implemented as no more than a two-bay design. Some full-power radio stations do use multiple panel antenna bays, installed one above the other on the side of a tall antenna tower, to provide a directional transmitter pattern on these frequencies.\n", "In a picture on the right, there are two sector antennas with different mechanical downtilts. Note that a more vertical antenna is less visible than a mechanically tilted one - the use of purely electrical tilt with no mechanical tilt is therefore an attractive choice for aesthetic reasons which are very important for operators seeking acceptance of integrated antennas in visible locations.\n", "Common reference antennas are horns, dipoles, monopoles and biconicals. These types are chosen because they are mechanically simple and quite electrically simple. Mechanical simplicity makes building repeatable antennas easier. Electrical simplicity makes design easier and allows use of design formulae that are known to be accurate.\n", "Soon after television broadcasting switched from analog to digital broadcasting, indoor antenna marketing evolved beyond the traditional \"rabbit ears.\" Flat antennas are lightweight, thin, and usually square-shaped with the claim of having more omnidirectional reception. They connect to televisions only with a coaxial cable; they may also be sold with a signal amplifier requiring a power source. Internally, the thin, flat square is a loop antenna, with its circular metallic wiring embedded into conductive plastic.\n", "directional antennas can have an almost unidirectional radiation pattern so the correct end of the antenna must be pointed at the TV station. As an antenna design provides higher gain (compared to a dipole), the main lobe of the radiation pattern becomes narrower.\n", "Many truckers use two co-phased antennas, mounted on their outside mirrors. Such an array is intended to enhance performance to the front and back, while reducing it to the sides (a desirable pattern for long-haul truckers). To achieve this effect, the antennas must be separated by about eight feet, only practical on large trucks. Two antennas may be installed for symmetrical appearance, with only one connected.\n" ]

[ "Physical attractiveness can have a significant effect on how people are judged in terms of employment or social opportunities, friendship, sexual behavior, and marriage. In many cases, humans attribute positive characteristics, such as intelligence and honesty, to attractive people without consciously realizing it. Physically attractive individuals are regarded more positively and accurately in first impressions, however the physical attractiveness stereotype will have bias opinions and decisions when comparing people of different attractiveness levels.\n", "Evolutionary theory also suggests that people whose physical features suggest they are healthy are seen as more attractive. The theory suggests that a healthy mate is more likely to possess genetic traits related to health that would be passed on to offspring. People's tendency to consider people with facial symmetry more attractive than those with less symmetrical faces is one example. However, a test was conducted that found that perfectly symmetrical faces were less attractive than normal faces. According to this study, the exact ratio of symmetric to asymmetric facial features depicting the highest attraction is still undetermined.\n", "In many cases, humans subconsciously attribute positive characteristics, such as intelligence and honesty, to physically attractive people. From research done in the United States and United Kingdom, it was found that the association between intelligence and physical attractiveness is stronger among men than among women. Evolutionary psychologists have tried to answer why individuals who are more physically attractive should also, on average, be more intelligent, and have put forward the notion that both general intelligence and physical attractiveness may be indicators of underlying genetic fitness. A person's physical characteristics can signal cues to fertility and health, with statistical modelling studies showing that the facial shape variables that reflect aspects of physiological health, including body fat and blood pressure, also influence observers' perceptions of health. Attending to these factors increases reproductive success, furthering the representation of one's genes in the population.\n", "Generally, physical attractiveness can be viewed from a number of perspectives; with universal perceptions being common to all human cultures, cultural and social aspects, and individual subjective preferences. The perception of attractiveness can have a significant effect on how people are judged in terms of employment or social opportunities, friendship, sexual behavior, and marriage.\n", "This episode studies whether human physical attractiveness is a matter of personal taste, looking at standards of beauty that are shared worldwide: a pretty face suggests fertility, while ugliness suggests poor health. Big eyes, smooth skin and symmetrical features are valued, and can lead to a better job, more money, and better sex.\n", "There are infinite variations in human phenotypes, though society reduces the variability to distinct categories. Physical appearance of humans, in particular those attributes which are regarded as important for physical attractiveness, are believed by anthropologists to significantly affect the development of personality and social relations. Humans are acutely sensitive to their physical appearance. Some differences in human appearance are genetic, others are the result of age, lifestyle or disease, and many are the result of personal adornment.\n", "In short, the more physically attractive an individual is, the more likely they are to experience decreased levels of sociometric popularity but increased levels of perceived popularity for engaging in relationally aggressive activities.\n" ]

[ "The device consists of a molded plastic housing that attaches to the end of an electrical conduit that carries the underground cables up the utility pole to the crossarm. Multiple bushing insulators project from the plastic body, each ending at an electrical terminal. Each overhead wire is connected to a bushing terminal from which the current passes through a rod down the center of the bushing to the interior of the housing, where it is connected to a wire from the conduit. Thus the device allows the overhead conductors to pass into the conduit while serving as a seal to keep out water. The purpose of the bushings, which have corrugations moulded into their surfaces, is to provide enough creepage distance along their surface to prevent leakage current from the high voltage terminal from flowing to the grounded metal conduit.\n", "Other uses for these contacts have been found. One is to interrupt a signal path to enable other circuitry to be inserted. This is done by using one NC contact of a stereo jack to connect the tip and ring together when no plug is inserted. The tip is then made the output, and the ring the input (or vice versa), thus forming a patch point.\n", "When viewing the device from above (the end without the exhaust tip), the pins are arranged in a group of three and a group of two, starting with the centre pin in the group of three and going in a clockwise direction, the pins are \"cathode, heater, grid, anode, heater\".\n", "The connector has 12 pins for electrical connections (both power and data), 2 double-sided \"hooks\" on the plug and matching holes in the phones connector for keeping the plug safely in place. One hook contains a small polarity key to prevent the connector being inserted upside down. The dimension of the connector on the phone is approximately . To help users identify the type of cable and see how to correctly insert the plug, a small symbol is placed on the side intended to be towards the front of the phone. Powerplugs display a small lightning bolt, headsets and hands-free-plugs show an old-fashioned headset, data-cables present a computer screen and music accessories reveal a note-sign.\n", "Twist-on wire connectors are available in a variety of sizes and shapes. While their exterior covering is typically made from insulating plastic, their means of connection is a tapered coiled metal insert, which threads onto the wires and holds them securely. When such a connector is twisted onto the stripped and twisted-together ends of wires, the wires are drawn into the connector's metal insert and squeezed together inside it. Electrical continuity is maintained by both the direct twisted wire-to-wire contact and by contact with the metal insert. \n", "Since the wire guiding nozzle can be moved freely throughout the room, it is possible for the nozzle to terminate the wire at the contact points if equipped with an additional swivel device. As in the case of the conventional linear winding technology, a contact pin or a hook contact can be terminated for the electrical connection and for interconnecting the single poles in a star connection or delta connection.\n", "Phone connectors with three conductors are also commonly used as unbalanced audio \"patch points\" (or \"insert points\", or simply \"inserts\"), with the output on many mixers found on the tip (left channel) and the input on the ring (right channel). This is often expressed as \"tip send, ring return\". Other mixers have unbalanced insert points with \"ring send, tip return\". One advantage of this system is that the switch contact within the panel socket, originally designed for other purposes, can be used to close the circuit when the patch point is not in use. An advantage of the \"tip send\" patch point is that if it is used as an output only, a 2-conductor mono phone plug correctly grounds the input. In the same fashion, use of a \"tip return\" insert style allows a mono phone plug to bring an unbalanced signal directly into the circuit, though in this case the output must be robust enough to withstand being grounded. Combining \"send\" and \"return\" functions via single  in TRS connectors in this way is seen in very many professional and semi-professional audio mixing desks, because it halves the space needed for insert jack fields which would otherwise need two jacks, one for \"send\" and one for \"return\". The tradeoff is that unbalanced signals are more prone to buzz, hum and outside interference.\n" ]

[ "When money or goods that have been kept are brought back into the economy, for example when people invest or spend money rather than save it. Or it can also be defined as the activity of investing money or selling gold, silver, etc. after a period during which investors have saved them.\n", "Money also functions as a unit of account, providing a common measure of the value of goods and services being exchanged. Knowing the value or price of a good, in terms of money, enables both the supplier and the purchaser of the good to make decisions about how much of the good to supply and how much of the good to purchase.\n", "An investor who has some money has two options: to spend it right now or to save it. But the financial compensation for saving it (and not spending it) is that the money value will accrue through the compound interest that he or she will receive from a borrower (the bank account in which he has the money deposited).\n", "Asked whether he invests in stocks, he replied, \"Not as much these days. I used to have a lot in equities—about 75%—but over the past three years, I've had about 95% in cash and 5% in equities. You're not getting much from savings these days but earning 0% is better than losing 50%. ... I don't believe in picking individual stocks or assets. ... Never invest your money as though you are gambling at the casino. Buying and selling individual stocks is a waste of time.\"\n", "An investor who has some money has two options: to spend it right now or to invest it. The financial compensation for saving it (and not spending it) is that the money value will accrue through the interests that he will receive from a borrower (the bank account on which he has the money deposited).\n", "An investor views his money as a \"capital asset\". As such, he expects his money to produce more money. Taking into account risk and how much interest is available on investments in other assets, an investor arrives at a personal rate of return he expects from his money. This is the cap rate he expects. If an apartment building is offered to him for $100,000, and he expects to make at least 8 percent on his real estate investments, then he would multiply the $100,000 investment by 8% and determine that if the apartments will generate $8000, or more, a year, after operating expenses, then the apartment building is a viable investment to pursue.\n", "Using margin of safety, one should buy a stock when it is worth more than its price in the market. This is the central thesis of value investing philosophy which espouses preservation of capital as its first rule of investing. Benjamin Graham suggested to look at unpopular or neglected companies with low P/E and P/B ratios. One should also analyze financial statements and footnotes to understand whether companies have hidden assets (e.g., investments in other companies) that are potentially unnoticed by the market.\n" ]

[ "The Normans were descended from Vikings who had settled in Normandy, and although they had adopted the French language, their heritage and self-image were essentially Viking. In this manner, the Vikings ultimately (if indirectly) finally conquered and kept England after all. \n", "The Normans (Norman: \"Normaunds\"; ) were an ethnic group that arose in Normandy, a northern region of France, from contact between indigenous Franks, Gallo-Romans, and Norse Viking settlers. The settlements followed a series of raids on the French coast from Denmark, Norway, and Iceland, and they gained political legitimacy when the Viking leader Rollo agreed to swear fealty to King Charles III of West Francia. The distinct cultural and ethnic identity of the Normans emerged initially in the first half of the 10th century, and it continued to evolve over the succeeding centuries.\n", "Normans (\"Nortmanni\" in Latin) was originally the name given by the Northern French inhabitants to Norwegian and Danish Vikings that plundered the French coastal regions and to those who finally settled in the Northwestern part of Neustria around 911 AD. Their descendants, that completely mixed up with the local population, were called Norman as well and the part of France, where they lived, Normandie. It could be said that some of their ancestors were the first Europeans to discover North America in 1000 AD (see Leif Ericson).\n", "The Normans, or Norsemen, raided the shores of England and France, from their homes in Scandinavia. The most prominent of these Norsemen was Hrólf, the Viking. whose name was Latinized to \"Rollo\" ... Tancredus was with Hrólf and his followers, when they seized in northern France, the area that would become \"Normandie\". Their possession of these lands were formalized, by the 'Treaty of St Clair-sur-Epte', between Charles III of France and Rollo, in the year 911.\n", "The Normans have Norse mythology in their Viking heritage, however, they were known to readily assimilate into other cultures. After a generation or two, the Normans were generally indistinguishable from their French neighbours.\n", "Whereas the term \"Normans\" in English usually refers to the Scandinavian-descended ruling dynasty of Normandy in France from the tenth century onwards, and their scions elsewhere in Western Europe, in the context of the Rus', 'Normanism' refers to the idea that the Rus' had their origins in Scandinavia (i.e. among 'Northmen'). However, the term is used to cover a diverse range of opinions, not all of which are held by all Normanists. (Some, indeed, may mostly exist as accusations about the views of Normanists by polemical anti-Normanists.) As outlined by Leo Klejn, these are, in decreasing order of plausibility:\n", "Vikings were of three types of Scandinavians: Swedes, whose expeditions were mainly eastwards to places such as Russia; Norwegians (Norse), who concentrated on the western seaboard of what is now Scotland, on Ireland, on the Irish Sea coasts including the Dublin area, on the Isle of Man, and on what is now Cumbria; and thirdly, Danes, who were more interested in eastern England and the north-east (including the Northumbrian kingdom), and what is now Yorkshire. The activities of the Vikings included a mix of trading, raiding, settlement and conquest.\n" ]

[ "Originally BD-ROMs stored video up to 1920×1080 pixel resolution at up to 60 (59.94) fields per second. Currently with UHD BD-ROM videos can be stored at a maximum of 3840×2160 pixel resolution at up to 60 (59.94) frames per second, progressively scanned. While most current Blu-ray players and recorders can read and write 1920×1080 video at the full 59.94p and 50p progressive format, new players for the UHD specifications will be able to read at 3840×2160 video at either 59.94p and 50p formats.\n", "To remaster a movie digitally for DVD and Blu-ray, digital restoration operators must scan in the film frame by frame at a resolution of at least 2,048 pixels across (referred to as 2K resolution). Some films are scanned at 4K, 6K, or even 8K resolution to future proof for higher resolution delivery formats. Scanning a film at 4K—a resolution of 4096 × 3092 for a full frame of film—generates at least 12 terabytes of data before any editing is done.\n", "SVCD has two thirds the resolution of DVD, and over 2.7 times the resolution of VCD. One CD-R disc can hold up to 60 minutes of standard quality SVCD-format video. While no specific limit on SVCD video length is mandated by the specification, one must lower the video bit rate, and therefore quality, to accommodate very long videos. It is usually difficult to fit much more than 100 minutes of video onto one SVCD without incurring significant quality loss, and many hardware players are unable to play video with an instantaneous bit rate lower than 300 to 600 kilobits per second.\n", "The progressive output of a DVD player can be considered the baseline for EDTV. Movies shot at 24 frames-per-second (fps) are often encoded onto a DVD at 24 fps progressive, and most DVD players do the 2:2 or 3:2 pulldown conversion internally, before feeding the output to (usually) an interlaced display, or here, a progressive 576p or 480p.\n", "Blu-ray disc editions were released to celebrate the film's 25th, 30th, and 35th anniversaries in 2009, 2014, and 2019 respectively, featuring a remastered 4K resolution video quality, deleted scenes, alternate takes, fan interviews and commentaries by crewmembers including Aykroyd, Ramis, Reitman, and Medjuck. The 35th-anniversary version came in a limited edition steel book cover and contained unseen footage including the deleted \"Fort Detmerring\" scene. A remaster of Bernstein's score was also released in June 2019, on CD, digital, and vinyl formats. It includes four unreleased tracks and commentary by Bernstein's son Peter.\n", "Another caveat to be aware of is that the output of Slow-Motion recording is not saved as being the original duration but is instead \"stretched\": for example, a one-second recording at 120 fps will be saved as being 4 seconds at 30 fps. While this is easily corrected for the video track without the need for reencoding, one consequence is that audio is not recorded.\n", "Damaged spots on a LaserDisc can be played through or skipped over, while a DVD will often become unplayable past the damage. Some newer DVD players feature a repair+skip algorithm, which alleviates this problem by continuing to play the disc, filling in unreadable areas of the picture with blank space or a frozen frame of the last readable image and sound. The success of this feature depends upon the amount of damage. LaserDisc players, when working in full analog, recover from such errors faster than DVD players. Direct comparison here is almost impossible due to the sheer size differences between the two media. A scratch on a DVD will probably cause more problems than a scratch on a LaserDisc, but a fingerprint taking up 1% of the area of a DVD would almost certainly cause fewer problems than a similar mark covering 1% of the surface of a LaserDisc.\n" ]

[ "As originally built, the line was 153.4 miles long, crossing the Continental Divide at Hagerman Pass (at altitude 12,055 feet), Fremont Pass (at altitude 11,346 feet) and Argentine Pass (at altitude 13,532 feet). For many years, this was the highest electric power transmission line in the world. The three-phase line operated at 90 kV and was supported 1400 steel towers 44 feet high on an average spacing of 730 feet.\n", "BULLET::::- June 3 – The first long distance electric power transmission line in the United States is completed, running 14 miles between a generator at Willamette Falls and downtown Portland, Oregon.\n", "Power is supplied to the SWER line by an isolating transformer of up to 300 kVA. This transformer isolates the grid from ground or earth, and changes the grid voltage (typically 22 or 33 kV line-to-line) to the SWER voltage (typically 12.7 or 19.1 kV line-to-earth).\n", "The first electric power transmission line in North America terminated at Chapman Square. It went online at 10:00 pm on June 3, 1889, operating at 4,000 volts of direct current, with the lines between the electric generating station at Willamette Falls in Oregon City, Oregon, and downtown Portland stretching about 13 miles. A bronze tablet in the park commemorates this achievement.\n", "It will transmit electrical power from renewable sources from areas of the world that are best able to produce it to consumers in other parts of the world. The idea is dependent on development of an ultra-high voltage grid operating at more than 1,000 kilovolts AC and 800 kilovolts DC over thousands of kilometers. It envisions interconnecting grids across regions, nations, and even continents with a capacity of over 10 gigawatts.\n", "Power is transmitted at 24 kV, which is then distributed at 11 kV and consumed at 115/200 volts or 115/230 volts (residential), 230/400 volts (commercial), or 11,000–24,900 volts for industry at a frequency of 50 hertz.\n", "The first 57 miles of power line were energized in December 1938 to provide electric service to 114 meters. The average member had a monthly electric bill of $3.00 and used approximately 30 kWh (kilowatt hours).\n" ]

[ "A vapor barrier on the warm side of the envelope must be combined with a venting path on the cold side of the insulation. This is because no vapor barrier is perfect, and because water may get into the structure, typically from rain. In general, the better the vapor barrier and the drier the conditions, the less venting is required.\n", "Bulk insulators block conductive heat transfer and convective flow either into or out of a building. The denser a material is, the better it will conduct heat. Because air has such low density, air is a very poor conductor and therefore makes a good insulator. Insulation to resist conductive heat transfer uses air spaces between fibers, inside foam or plastic bubbles and in building cavities like the attic. This is beneficial in an actively cooled or heated building, but can be a liability in a passively cooled building; adequate provisions for cooling by ventilation or radiation are needed.\n", "Warm air has a lower density than cool air, so warm air rises within cooler air, similar to hot air balloons. Clouds form as relatively warmer air carrying moisture rises within cooler air. As the moist air rises, it cools, causing some of the water vapor in the rising packet of air to condense. When the moisture condenses, it releases energy known as latent heat of condensation which allows the rising packet of air to cool less than its surrounding air, continuing the cloud's ascension. If enough instability is present in the atmosphere, this process will continue long enough for cumulonimbus clouds to form, which support lightning and thunder. Generally, thunderstorms require three conditions to form: moisture, an unstable airmass, and a lifting force (heat).\n", "Warm air has a lower density than cool air, so warm air rises within cooler air, similar to hot air balloons. Clouds form as relatively warmer air carrying moisture rises within cooler air. As the moist air rises, it cools, causing some of the water vapor in the rising packet of air to condense. When the moisture condenses, it releases energy known as the latent heat of vaporisation, which allows the rising packet of air to cool less than its surrounding air, continuing the cloud's ascension. If enough instability is present in the atmosphere, this process will continue long enough for cumulonimbus clouds to form, which support lightning and thunder. Generally, thunderstorms require three conditions to form: moisture, an unstable air mass, and a lifting force (heat).\n", "Warm air has a lower density than cool air, so warm air rises within cooler air, similar to hot air balloons. Clouds form as relatively warmer air carrying moisture rises within cooler air. As the moist air rises, it cools causing some of the water vapor in the rising packet of air to condense. When the moisture condenses, it releases energy known as latent heat of vaporization which allows the rising packet of air to cool less than its surrounding air, continuing the cloud's ascension. If enough instability is present in the atmosphere, this process will continue long enough for cumulonimbus clouds to form, which support lightning and thunder. Generally, thunderstorms require three conditions to form: moisture, an unstable airmass, and a lifting force (heat).\n", "The primary role of such insulation is to make the thermal conductivity of the insulation that of trapped, stagnant air. However this cannot be realized fully because the glass wool or foam needed to prevent convection increases the heat conduction compared to that of still air. \n", "Clouds greatly affect the transfer of radiation in the atmosphere. In the thermal spectral domain, water is a strong absorber (and thus emitter, according to Kirchhoff's law of thermal radiation); hence clouds exchange thermal radiation between their bases and the underlying planetary surface (land or ocean) by absorbing and re-emitting this infrared radiation at the prevailing temperature – the lower the cloud base, the warmer the cloud particles and the higher the rate of emission. For a synthetic discussion of the impact of clouds (and in particular the role of cloud bases) on climate systems, see the IPCC Third Assessment Report, in particular chapter 7.2.\n" ]

[ "Kellogg Co. v. National Biscuit Co., 305 U.S. 111 (1938), is a United States Supreme Court case in which the Court ruled that the Kellogg Company was not violating any trademark or unfair competition laws when it manufactured its own Shredded Wheat breakfast cereal, which had originally been invented by the National Biscuit Company (later called Nabisco). Kellogg's version of the product was of an essentially identical shape, and was also marketed as \"Shredded Wheat\"; but Nabisco's patents had expired, and its trademark application for the term \"Shredded Wheat\" had been turned down as a descriptive, non-trademarkable term.\n", "The cereal was a joint product from Post Cereals and Kraft Foods, which allowed both companies to share the rights, distribution and profits after 1997. The cereal was very successful when it came to sales, and parental approval as a suitable breakfast food. In 2007, both companies ceased co-branding, which made the cereal impossible to produce. Kraft foods owned the copyrights to the name Oreo, yet Post owned the copyrights to the cereal recipe itself. Neither company wished to relinquish either rights; therefore forcing the cereal to become discontinued worldwide.\n", "On November 22, 1977, Jenner went to San Francisco to refute charges filed by San Francisco district attorney Joseph Freitas that General Mills—the maker of Wheaties—had engaged in deceptive advertising in its campaign that featured Jenner. Jenner liked Wheaties and ate the breakfast cereal two or three times a week, which supported the advertising campaign's claims. Two days later, Freitas withdrew the suit, saying that it was \"a case of overzealousness\" on the part of his staff.\n", "In late August 2012, a three-judge panel in Seoul Central District Court delivered a split decision, ruling that Apple had infringed upon two Samsung technology patents, while Samsung violated one of Apple's patents. The court awarded small damages to both companies and ordered a temporary sales halt of the infringing products in South Korea; however, none of the banned products were the latest models of either Samsung or Apple.\n", "The Kellogg Company started manufacturing shredded wheat cereal in 1912 after Perky's patents expired; after the Shredded Wheat Company objected, Kellogg stopped manufacturing their version in 1919. The nature of the settlement is not clear. In 1927, the Kellogg Company resumed manufacturing shredded wheat, prompting a lawsuit from the Shredded Wheat Company; the lawsuit was settled. In 1930, the Shredded Wheat Company was acquired by the National Biscuit Company (later Nabisco), which again sued Kellogg, both in Canada and in the United States, for unfair competition.\n", "The cereal has been subsequently manufactured by numerous other suppliers under a generic brand, often in supermarkets' \"own brand\" range. In the United Kingdom, Tesco, Sainsbury's and Waitrose have all produced their own versions of the cereal.\n", "The first advertising copy for the new product described the cereal as \"The Food That is all Food\", the advertising images showed rosy-cheeked children, and it was sold in a box decorated with images of muscular men wrestling with chains. Perhaps because it was not initially targeted at a well-defined market, it did not sell well.\n" ]

[ "Mirror matter could have been diluted to unobservably low densities during the inflation epoch. Sheldon Glashow has shown that if at some high energy scale particles exist which interact strongly with both ordinary and mirror particles, radiative corrections will lead to a mixing between photons and mirror photons. This mixing has the effect of giving mirror electric charges a very small ordinary electric charge. Another effect of photon–mirror photon mixing is that it induces oscillations between positronium and mirror positronium. Positronium could then turn into mirror positronium and then decay into mirror photons.\n", "If a single photon is emitted into the entry port of the apparatus at the lower-left corner, it immediately encounters a beam-splitter. Because of the equal probabilities for transmission or reflection the photon will either continue straight ahead, be reflected by the mirror at the lower-right corner, and be detected by the detector at the top of the apparatus, or it will be reflected by the beam-splitter, strike the mirror in the upper-left corner, and emerge into the detector at the right edge of the apparatus. Observing that photons show up in equal numbers at the two detectors, experimenters generally say that each photon has behaved as a particle from the time of its emission to the time of its detection, has traveled by either one path or the other, and further affirm that its wave nature has not been exhibited.\n", "Einstein proposed as part of his theory of special relativity that light reflected from a mirror moving close to the speed of light will have higher peak power than the incident light because of temporal compression. Using a dense relativistic electron mirror created from a high-intensity laser pulse and nanometre-scale foil, the frequency of the laser pulse was shown to shift coherently from infrared to the ultraviolet. The results elucidate the reflection process of laser-generated electron mirrors and suggest future research in relativistic mirrors.\n", "When it reaches the second half-silvered mirror, if the photon in the experiment is behaving like a particle (in other words, if it is not in a superposition), then it has a fifty-fifty chance it will pass through or be reflected and be detected by one or the other detector. \"But that's only possible if the bomb is live.\" If the bomb \"observed\" the photon, it detonated and destroyed the photon on the lower path, therefore only the photon that takes the upper path will be detected, either at Detector C or Detector D.\n", "The proposed experimental setup is basically a variation of the Michelson interferometer but for a single photon. Additionally, one of the mirrors has to be very tiny and fixed on an isolated micromechanical-oscillator. This allows it to move when the photon is reflected on it, so that it may become superposed with the photon. The purpose is to vary the size of the mirror to investigate the effect of the mass on the time it takes for the quantum system to collapse.\n", "Now, the same photon is moving through two different parts of the device. The photon that passed through the mirror is now on the \"lower path\". It may or may not encounter a bomb, which is designed to explode if it encounters a single photon. The photon that was reflected off the mirror is now on the \"upper path\". Both photons next encounter a normal mirror. The \"lower-path\" photon is reflected ninety-degrees upward (if it did not detect a bomb). The \"upper-path\" photon is reflected back ninety degrees so that it is returned to its original trajectory.\n", "Alternatively, it is also possible to use an oscillating reflecting surface to cause destructive interference with reflected light along a single optical path. This principle is the basis for a Michelson interferometer.\n" ]

[ "Traditionally, strength training (the performance of exercises with resistance or added weight) was not deemed appropriate for endurance athletes due to potential interference in the adaptive response to the endurance elements of an athlete's training plan. There were also misconceptions regarding the addition of excess body mass through muscle hypertrophy (growth) associated with strength training, which could negatively effect endurance performance by increasing the amount of work required to be completed by the athlete. However, more recent and comprehensive research has proved that short-term (8 weeks) strength training in addition to endurance training is beneficial for endurance performance, particularly long-distance running.\n", "Strength training is typically associated with the production of lactate, which is a limiting factor of exercise performance. Regular endurance exercise leads to adaptations in skeletal muscle which can prevent lactate levels from rising during strength training. This is mediated via activation of PGC-1alpha which alter the LDH (lactate dehydrogenase) isoenzyme complex composition and decreases the activity of the lactate generating enzyme LDHA, while increasing the activity of the lactate metabolizing enzyme LDHB.\n", "Evidence has shown that increases in strength occur well before muscle hypertrophy, and decreases in strength due to detraining or ceasing to repeat the exercise over an extended period of time precede muscle atrophy. To be specific, strength training enhances motor neuron excitability and induces synaptogenesis, both of which would help in enhancing communication between the nervous system and the muscles themselves. However, neuromuscular efficacy is not altered within a two-week time period following cessation of the muscle usage; instead, it is merely the neuron's ability to excite the muscle that declines in correlation with the muscle's decrease in strength. This confirms that muscle strength is first influenced by the inner neural circuitry, rather than by external physiological changes in the muscle size.\n", "Older adults are prone to loss of muscle strength. With more strength older adults have better health, better quality of life, better physical function and fewer falls. In cases in which an older person begins strength training, their doctor or health care provider may neglect to emphasize a strength training program which results in muscle gains. Under-dosed strength training programs should be avoided in favor of a program which matches the abilities and goals of the person exercising.\n", "The mechanisms implied for the muscle memory suggest that it mainly related to strength training, and a 2016 study conducted at Karolinska Institutet in Stockholm, Sweden, failed to find a memory effect of endurance training. \n", "Any athlete who has trained for a sport has probably experienced plateaus, and this has given rise to various strategies to continue improving. Voluntary skeletal muscle is in balance between the amount of muscle synthesized or renewed each day and the amount that is degraded. Muscle fibers respond to repetition and load, and increased training causes the quantity of exercised muscle fiber to increase exponentially (simply meaning that the greatest gains are seen during the first weeks of training). Successful training produces hypertrophy of muscle fibers as an adaptation to the training regimen. In order to make further gains, greater workout intensity is required with heavier loads and more repetitions, although improvement in skill can contribute to gains in ability.\n", "Part of the process of strength training is increasing the nerve's ability to generate sustained, high frequency signals which allow a muscle to contract with its greatest force. It is this neural training that causes several weeks worth of rapid gains in strength, which level off once the nerve is generating maximum contractions and the muscle reaches its physiological limit. Past this point, training effects increase muscular strength through myofibrilar or sarcoplasmic hypertrophy and metabolic fatigue becomes the factor limiting contractile force.\n" ]

[ "The main difference between a sanitizer and a disinfectant is that at a specific use dilution, the disinfectant must have a higher kill capability for pathogenic bacteria than that of a sanitizer. If these micro-organisms are not destroyed, the bottled water being produced may be contaminated. \n", "On April 30, 2015, the FDA announced that they were requesting more scientific data based on the safety of hand sanitizer. Emerging science also suggests that for at least some health care antiseptic active ingredients, systemic exposure (full body exposure as shown by detection of antiseptic ingredients in the blood or urine) is higher than previously thought, and existing data raise potential concerns about the effects of repeated daily human exposure to some antiseptic active ingredients. This would include hand antiseptic products containing alcohol and triclosan.\n", "If soap and water are not available, use an alcohol-based hand sanitizer with at least 60% alcohol (check the product label to be sure). Hand sanitizer with at least 60% alcohol is effective in killing Cronobacter germs. But use soap and water as soon as possible afterward because hand sanitizer does not kill all types of germs and may not work as well if hands are visibly greasy or dirty.\n", "Hand sanitizers containing a minimum of 60 to 95% alcohol are efficient germ killers. Alcohol rub sanitizers kill bacteria, multi-drug resistant bacteria (MRSA and VRE), tuberculosis, and some viruses (including HIV, herpes, RSV, rhinovirus, vaccinia, influenza, and hepatitis) and fungi. Alcohol rub sanitizers containing 70% alcohol kill 99.97% (3.5 log reduction, similar to 35 decibel reduction) of the bacteria on hands 30 seconds after application and 99.99% to 99.999% (4 to 5 log reduction) of the bacteria on hands 1 minute after application.\n", "Sanitizers are substances that simultaneously clean and disinfect. Disinfectants kill more germs than sanitizers. Disinfectants are frequently used in hospitals, dental surgeries, kitchens, and bathrooms to kill infectious organisms.\n", "Hand sanitizers are most effective against bacteria and less effective against some viruses. Alcohol-based hand sanitizers are almost entirely ineffective against norovirus or Norwalk type viruses, the most common cause of contagious gastroenteritis.\n", "Compared to competitors who provided 5% profit margin, Ghari detergent provided a profit margin of 6-7% to its dealers. This enabled Ghari to have a stronger dealer base to push sales while keeping its prices low.\n" ]

[ "Aspiring boxers undergo years of apprenticeship, toughening their fists against stone and other hard surfaces, until they are able to break coconuts and rocks with their bare hands. Any part of the body may be targeted, except the groin, but the prime targets are the head and chest. Techniques incorporate punches, kicks, elbows, knees and grabs. Boxers wear no form of protection and fight bare-fisted. Matches may be one-on-one, one against a group, or group against group. Victory can be attained by knockout, ringout or submission.\n", "Punching may be done to create a decorative pattern, or to make a hole, for example, in preparation for making a hammer head, a smith would punch a hole in a heavy bar or rod for the hammer handle. Punching is not limited to depressions and holes. It also includes cutting, slitting and drifting; these are done with a chisel.\n", "BULLET::::- Brick by Brick: The players must transfer their bricks one at a time from one pile to the next, while walking across a plank. Players are disqualified if they drop a brick, break one, or fall off the plank. Whoever has transferred the most bricks at the end of three and a half hours wins.\n", "Punching may be done to create a decorative pattern, or to make a hole. For example, in preparation for making a hammerhead, a smith would punch a hole in a heavy bar or rod for the hammer handle. Punching is not limited to depressions and holes. It also includes cutting, slitting, and drifting—all done with a chisel.\n", "The human hand is made up of many small bones which may be damaged by heavy impact. If a hard part of the opponent's body or other hard object is inadvertently struck, the metacarpals may splay on impact and break. Boxers tape their hands so as to hold the metacarpals together and keep them from splaying. One can toughen one's bones by striking objects to induce osteoclasts (cells which remove bone) and osteoblasts (which form bone) to remodel the bone over the struck area increasing the density of bone at the striking surface. For more information on bone remodeling, see Wolff's law.\n", "The word \"tinju\" means fist-fighting and usually refers to western boxing. In Flores a form of boxing exists which involves four people. As two boxers fight, each is steered by a partner holding their waistband from behind. Attacks may be delivered with the open hand, closed fist, backhand, elbow, or a combination of these. Only the hands, arms and shoulders may be used. Kicks and throws are not permitted. The history of tinju is unknown but it is most common in Bajawa and most likely originated there. In earlier times, each boxer would hold a smooth round stone in one hand and wrap the hand in cloth. Matches are full-contact and victory is determined on points.\n", "A boxer normally hits the speed bag from the front with his or her fists, but it is also possible to use fists and elbows to hit the bag from all around it, including the front, back and sides. In this method the user may perform many diverse punching combinations that create improvised rhythmic accents.\n" ]

[ "Since forces, changing at a suitable rate in time (that is, \"suitable\" jerk) are the cause of vibrations, and vibrations significantly impair the quality of transportation, there is good reason to simply \"minimize\" jerk in transportation vehicles.\n", "BULLET::::- High-powered sports cars offer the feeling of being pressed into the cushioning, but this is the force of the acceleration. Jerk occurs only in the very first moments, when the torque of the engine starts at zero and grows with the rotational speed, causing a remarkable of the acceleration. A slight whiplash effect is noticeable in the neck, mostly masked by the jerk of gear switching.\n", "Sudden unintended acceleration (SUA) is the unintended, unexpected, uncontrolled acceleration of a vehicle, often accompanied by an apparent loss of braking effectiveness. Such problems may be caused by driver error (e.g., pedal misapplication), mechanical or electrical problems, or some combination of these factors.\n", "BULLET::::- Slow response – sideways acceleration does not start immediately when the steering is turned and may not stop immediately when it is returned to center. This is partly caused by body roll. Other causes include tires with high slip angle, and yaw and roll angular inertia. Roll angular inertia aggravates body roll by delaying it. Soft tires aggravate yaw angular inertia by waiting for the car to reach their slip angle before turning the car.\n", "\"Sudden acceleration incidents\" (SAI) are defined for the purpose of this report as unintended, unexpected, high-power accelerations from a stationary position or a very low initial speed accompanied by an apparent loss of braking effectiveness. In a typical scenario, the incident begins at the moment of shifting to \"Drive\" or \"Reverse\" from \"Park\".\n", "Driveline shunt occurs when a vehicle gives an abrupt jolt while coming on or off overrun or freewheel. It is caused when the gearbox or other transmission linkages do not immediately relay changes in engine output to changes in wheel speed. There is a very brief delay before the backlash is taken up in a sudden, abrupt manner.\n", "The effect of the system on normal driving has been described as \"dreaded\", \"awful\" and \"annoying\". In 1994 Popular Science noted that \"if something like an oncoming truck makes you change your mind, the car's response is doggedly slow.\"\n" ]

[ "Although magnet links can be used in a number of contexts, they are particularly useful in peer-to-peer file sharing networks because they allow resources to be referred to without the need for a continuously available host, and can be generated by anyone who already has the file, without the need for a central authority to issue them. This makes them popular for use as \"guaranteed\" search terms within the file sharing community where anyone can distribute a magnet link to ensure that the resource retrieved by that link is the one intended, regardless of how it is retrieved.\n", "Correlated magnetics is an enabling technology that can produce very strong yet safe industrial magnets. For the small size applications, correlated magnets can be used in positioning devices, consumer electronics, magnetic couplings, and vehicle attachment. Potential applications include attach and release work-holding mechanisms, magnetic separators, fluid seals and valves, motor and motion control, factory automation, prosthetics, security devices, and power generation. Correlated magnets is a relatively new technology in history. More applications and research opportunities will be explored.\n", "Bonded Nd-magnets are prepared by melt spinning a thin ribbon of the NdFeB alloy. The ribbon contains randomly oriented NdFeB nano-scale grains. This ribbon is then pulverized into particles, mixed with a polymer, and either compression- or injection-molded into bonded magnets. Bonded magnets offer less flux intensity than sintered magnets, but can be net-shape formed into intricately shaped parts, as is typical with Halbach arrays or arcs, trapezoids and other shapes and assemblies (e.g. Pot Magnets, Separator Grids, etc.). There are approximately 5,500 tons of Neo bonded magnets produced each year. In addition, it is possible to hot-press the melt spun nanocrystalline particles into fully dense isotropic magnets, and then upset-forge or back-extrude these into high-energy anisotropic magnets.\n", "A magneto is one of the electromechanical devices invented for the purpose of ignition with gasoline internal combustion engines. A magneto at its most basic is a simple magnet that moves next to a wire, or sometimes a wire moves next to a magnet. As they move in relation to each other, the changes in direction of magnetic force induce an electric current in the wire. Usually the wire (called a primary wire) is very long, and looped around an iron magnetic core that more or less channels the magnetic field through the loop of wire. As the current flows, the wire loops develop their own magnetic field, which takes a certain amount of energy to form. The magnetic field is a type of potential energy. There is usually some sort of device that opens and closes the circuit called a contact breaker, points or an ignitor. As the points or ignitor open, the current ceases flowing, and the magnetic field collapses. The energy stored in the magnetic field is released in the form of increased electric voltage in the wire. This voltage jumps across the gap of either the ignitor or a spark plug located in the combustion chamber and ignites the air–fuel mixture to do work.\n", "MAGNET provides awareness to the field as well as to strategic planners by aggregating data from existing sources internal and external to the Coast Guard or the Department of Homeland Security. MAGNET correlates data and provides the medium to display information such as ship registry, current ship position, crew background, passenger lists, port history, cargo, known criminal vessels, and suspect lists. MAGNET processes personally identifiable information (PII).\n", "The science of correlated magnetics was created in 2008 by Larry W. Fullerton in his laboratory at Cedar Ridge in North Alabama. Correlated Magnetics Research (CMR) was formed to pursue research and development of the Coded Magnets technology and to license the technology to business entities across industry. More than 65 patents have been filed for the technology in the U.S. and around the world. CMR uses the term \"polymagnets\" for this technology. The coding theory used to design radio frequency signals in communication and radar is applied to form the magnetic regions of correlated magnets. The discovery was announced during a press conference in October, 2009, in Huntsville, Alabama. The world first's 3D magnetizing printer is developed by CMR, which is called MagPrinter. This printer consists of a magnetizing coil in a cabinet with a motion-control system. A polymagnet can be easily made from reprogramming a conventional magnetic material in a few minutes.\n", "Magnet.me has been referred to by one source as the “LinkedIn for students”. The difference between the two is that Magnet.me only focuses on the graduate recruitment market and is a student-to-employer network, whilst Linkedin is a peer-to-peer network.\n" ]

[ "However, the observations proved that it is actually possible for life to exist at high temperatures and that some bacteria even prefer temperatures higher than the boiling point of water. Dozens of such bacteria are known.\n", "BULLET::::1. Boiling: Bringing water to its boiling point (about 100 °C or 212 F at sea level), is the oldest and most effective way since it eliminates most microbes causing intestine related diseases, but it cannot remove chemical toxins or impurities. For human health, complete sterilization of water is not required, since the heat resistant microbes are not intestine affecting. The traditional advice of boiling water for ten minutes is mainly for additional safety, since microbes start getting eliminated at temperatures greater than . Though the boiling point decreases with increasing altitude, it is not enough to affect the disinfecting process. In areas where the water is \"hard\" (that is, containing significant dissolved calcium salts), boiling decomposes the bicarbonate ions, resulting in partial precipitation as calcium carbonate. This is the \"fur\" that builds up on kettle elements, etc., in hard water areas. With the exception of calcium, boiling does not remove solutes of higher boiling point than water and in fact increases their concentration (due to some water being lost as vapour). Boiling does not leave a residual disinfectant in the water. Therefore, water that is boiled and then stored for any length of time may acquire new pathogens.\n", "The traditional advice of boiling water for ten minutes is mainly for additional safety, since microbes start getting eliminated at temperatures greater than and bringing it to its boiling point is also a useful indication that can be seen without the help of a thermometer, and by this time, the water is disinfected. Though the boiling point decreases with increasing altitude, it is not enough to affect the disinfecting process.\n", "Boiling water is used as a method of making it potable by killing microbes that may be present. The sensitivity of different micro-organisms to heat varies, but if water is held at 70 °C (158 °F) for ten minutes, many organisms are killed, but some are more resistant to heat and require one minute at the boiling point of water.\n", "The elimination of micro-organisms by boiling follows first-order kinetics—at high temperatures, it is achieved in less time and at lower temperatures, in more time. The heat sensitivity of micro-organisms varies, at , Giardia species (causes Giardiasis) can take ten minutes for complete inactivation, most intestine affecting microbes and \"E. coli\" (gastroenteritis) take less than a minute; at boiling point, \"Vibrio cholerae\" (cholera) takes ten seconds and hepatitis A virus (causes the symptom of jaundice), one minute. Boiling does not ensure the elimination of all micro-organisms; the bacterial spores Clostridium can survive at but are not water-borne or intestine affecting. Thus for human health, complete sterilization of water is not required.\n", "Although the vegetative form of the bacteria is destroyed by boiling, the spore itself is not killed by the temperatures reached with normal sea-level-pressure boiling, leaving it free to grow and again produce the toxin when conditions are right.\n", "Other research is being done on the effects of protein, pH, temperature, sodium chloride (NaCl), and sucrose on \"P. multocida\" development and survival in water. The research seems to show the bacteria survive better in 18 °C water compared to 2 °C water. The addition of 0.5% NaCl also aided bacterial survival, while the sucrose and pH levels had minor effects, as well. Research has also been done on the response of \"P. multocida\" to the host environment. These tests use DNA microarrays and proteomics techniques. \"P. multocida\"-directed mutants have been tested for their ability to produce disease. Findings seem to indicate the bacteria occupy host niches that force them to change their gene expression for energy metabolism, uptake of iron, amino acids, and other nutrients. \"In vitro\" experiments show the responses of the bacteria to low iron and different iron sources, such as transferrin and hemoglobin. \"P. multocida\" genes that are upregulated in times of infection are usually involved in nutrient uptake and metabolism. This shows true virulence genes may only be expressed during the early stages of infection.\n" ]

[ "Many of the Greek statues well known from Roman marble copies were originally temple cult images, which in some cases, such as the Apollo Barberini, can be credibly identified. A very few actual originals survive, for example, the bronze Piraeus Athena ( high, including a helmet). The image stood on a base, from the 5th century often carved with reliefs.\n", "The marble has been used in Rome since the Augustan age, when large-scale quarrying began at Docimium, and columns of it were used in the House of Augustus, as well as in the Temple of Mars Ultor, which also had pavonazzo floor tiles in the cella. Pavonazzetto statues of kneeling Phrygian barbarians existed in the Basilica Aemilia and Horti Sallustiani. Giant statue groups carved from Docimaean marble were discovered at Tiberius's Villa in Sperlonga. Pavonazzetto was not widely or extensively used before the Roman period; there is no evidence of it in circulation before the last two decades B.C.\n", "Bronze statues were regarded as the highest form of sculpture in Ancient Greek art, though survivals are few, as bronze was a valuable material in short supply in the Late Antique and medieval periods. Many of the most famous Greek bronze sculptures are known through Roman copies in marble, which were more likely to survive.\n", "Surviving ancient Greek sculptures were mostly made of two types of material. Stone, especially marble or other high-quality limestones was used most frequently and carved by hand with metal tools. Stone sculptures could be free-standing fully carved in the round (statues), or only partially carved reliefs still attached to a background plaque, for example in architectural friezes or grave stelai.\n", "Ancient Greek monumental sculpture was composed almost entirely of marble or bronze; with cast bronze becoming the favoured medium for major works by the early 5th century. Both marble and bronze are fortunately easy to form and very durable. Chryselephantine sculptures, used for temple cult images and luxury works, used gold, most often in leaf form and ivory for all or parts (faces and hands) of the figure, and probably gems and other materials, but were much less common, and only fragments have survived.\n", "Ancient Greek sculpture was composed almost entirely of marble or bronze; with cast bronze becoming the favoured medium for major works by the early 5th century. Both marble and bronze are easy to form and very durable. Chryselephantine sculptures, used for temple cult images and luxury works, used gold, most often in leaf form and ivory for all or parts (faces and hands) of the figure, and probably gems and other materials, but were much less common, and only fragments have survived. By the early 19th century, the systematic excavation of ancient Greek sites had brought forth a plethora of sculptures with traces of notably multicolored surfaces. It was not until published findings by German archaeologist Vinzenz Brinkmann in the late 20th century, that the painting of ancient Greek sculptures became an established fact.\n", "The white marble favored by Classical sculptors is easily broken, and many antique statues have been damaged since their creation by accidents, iconoclasm, or vandalism. During the 19th century, it was common practice for museums to exhibit such marble sculptures in a \"restored\" state, with damaged parts repaired or reconstructed to make the statue look as much as possible as it did when it was first created. The noses of antique statues are especially likely to be damaged or missing, so many Greek or Roman statues acquired new noses during this era. Modern exhibition practice may differ from museum to museum. The minimalist approach prescribes removing such 19th-century additions in the interest of authenticity, as has been done in Copenhagen.\n" ]

[ "Fractional reserve banking has resulted in a transfer of wealth from the holders of currency to investors. Under fractional reserve banking the money supply is allowed to be increased whenever new interest-bearing loans are issued and is often constrained by a reserve ratio, which mandates that banks hold a portion of the wealth they lend out at interest in the form of real reserves. Many nations are in the process of eliminating reserve ratios.\n", "The theory holds that, in a system of fractional-reserve banking, where banks ordinarily keep only a fraction of their deposits in reserves, an initial bank loan creates more money than is initially lent out.\n", "The process of fractional-reserve banking expands the money supply of the economy but also increases the risk that a bank cannot meet its depositor withdrawals. Modern central banking allows banks to practice fractional-reserve banking with inter-bank business transactions with a reduced risk of bankruptcy.\n", "There are two suggested mechanisms for how money creation occurs in a fractional-reserve banking system: either reserves are first injected by the central bank, and then lent on by the commercial banks, or loans are first extended by commercial banks, and then backed by reserves borrowed from the central bank. The \"reserves first\" model is that taught in mainstream economics textbooks, while the \"loans first\" model is advanced by endogenous money theorists.\n", "Fractional-reserve banking allows banks to create credit in the form of bank deposits, which represent immediate liquidity to depositors. The banks also provide longer-term loans to borrowers, and act as financial intermediaries for those funds. Less liquid forms of deposit (such as time deposits) or riskier classes of financial assets (such as equities or long-term bonds) may lock up a depositor's wealth for a period of time, making it unavailable for use on demand. This \"borrowing short, lending long,\" or maturity transformation function of fractional-reserve banking is a role that many economists consider to be an important function of the commercial banking system.\n", "However, some critics of fractional reserve banking argue that the practice inherently artificially lowers real interest rates and leads to business cycles propagated by excessive capital investment and subsequent contraction. A small number of critics, such as Michael Rowbotham, equate the practice to counterfeiting, because banks are granted the legal right to issue new loans while charging interest on the money thus created. Rowbotham argues that this concentrates wealth in the banking sector with various pernicious effects.\n", "Today, monetary reformers point out that fractional reserve banking leads to unpayable debt, growing inequality, inevitable bankruptcies, and an imperative for perpetual and unsustainable economic growth.\n" ]

[ "At high speeds through the air, the object's kinetic energy is converted to heat through compression and friction. At lower speed, the object will lose heat to the air through which it is passing, if the air is cooler. The combined temperature effect of heat from the air and from passage through it is called the stagnation temperature; the actual temperature is called the recovery temperature. These viscous dissipative effects to neighboring sub-layers make the boundary layer slow down via a non-isentropic process. Heat then conducts into the surface material from the higher temperature air. The result is an increase in the temperature of the material and a loss of energy from the flow. The forced convection ensures that other material replenishes the gases that have cooled to continue the process.\n", "Air movement can have a significant influence on human thermal comfort. Wind chill in cold conditions is considered detrimental, but air movement in neutral to warm environments is considered beneficial. This is because normally under conditions with air temperatures above about 74°F, the body needs to lose heat in order to maintain a constant internal temperature. \n", "As the air surrounding one's body is warmed by body heat, it will rise and be replaced with other air. If air is moved away from one's body with a natural breeze or a fan, sweat will evaporate faster, making perspiration more effective at cooling the body. The more unevaporated perspiration, the greater the discomfort.\n", "At higher temperatures, air is less dense and planes must fly faster to generate the same amount of lift. High heat may reduce the amount of cargo a plane can carry, increase the length of runway a plane needs to take off,\n", "Heat transfer by convection is driven by the movement of fluids over the surface of the body. This convective fluid can be either a liquid or a gas. For heat transfer from the outer surface of the body, the convection mechanism is dependent on the surface area of the body, the velocity of the air, and the temperature gradient between the surface of the skin and the ambient air. The normal temperature of the body is approximately 37 °C. Heat transfer occurs more readily when the temperature of the surroundings is significantly less than the normal body temperature. This concept explains why a person feels cold when not enough covering is worn when exposed to a cold environment. Clothing can be considered an insulator which provides thermal resistance to heat flow over the covered portion of the body. This thermal resistance causes the temperature on the surface of the clothing to be less than the temperature on the surface of the skin. This smaller temperature gradient between the surface temperature and the ambient temperature will cause a lower rate of heat transfer than if the skin were not covered.\n", "Thermals are caused by local differences in temperature, pressure, or impurity concentration in the vertical. Temperature differences can cause air currents because warmer air is less dense than cooler air, causing the warmer air to appear \"lighter.\" Thus, if the warm air is under the cool air, air currents will form as they exchange places. Air currents are caused because of the uneven heating of Earth's surface.\n", "Temperature must also be accounted for because the air pump will heat the air passing through it making the air down stream of it less dense and more viscous. This difference must be corrected for. Temperature is measured at the test piece plenum and at the metering element plenum. Correction factors are then applied during flow calculations. Some flow bench designs place the air pump after the metering element so that heating by the air pump is not as large a concern.\n" ]

[ "When light propagates through a material, it travels slower than the vacuum speed, . This is a change in the phase velocity of the light and is manifested in physical effects such as refraction. This reduction in speed is quantified by the ratio between and the phase velocity. This ratio is called the refractive index of the material. Slow light is a dramatic reduction in the group velocity of light, not the phase velocity. Slow light effects are not due to abnormally large refractive indices, as which will be explained below.\n", "When light propagates in a medium, its speed is reduced, in the rest frame of the medium, to , where is the index of refraction of the medium . The speed of light in a medium uniformly moving with speed in the positive -direction as measured in the lab frame is given directly by the velocity addition formulas. For the forward direction (standard configuration, drop index on ) one gets,\n", "Slow light is the propagation of an optical pulse or other modulation of an optical carrier at a very low group velocity. Slow light occurs when a propagating pulse is substantially slowed down by the interaction with the medium in which the propagation takes place.\n", "Interest in the field of ‘slow’ and ‘stopped’ light arises from the prospect of obtaining much better control over light signals, with extremely nonlinear effects in interactions between light and matter, and optical quantum memories facilitating new architectures to process quantum information. With conventional dielectric materials, having a positive refractive index, it is impossible to ‘stop’ travelling light signals completely, not least because of the presence of structural disorder. This was an important observation, which Hess made from his extensive studies of slow light in semiconductor quantum dots and the dynamics of their spontaneous emission close to the stopped-light point in photonic crystals. Hess showed theoretically that a way to overcome this fundamental limitation of conventional media was to use nanoplasmonic waveguide structures.\n", "According to the theories prevailing at the time, light traveling through a moving medium would be dragged along by the medium, so the measured speed of the light would be a simple sum of its speed \"through\" the medium plus the speed \"of\" the medium.\n", "In a medium, light usually does not propagate at a speed equal to \"c\"; further, different types of light wave will travel at different speeds. The speed at which the individual crests and troughs of a plane wave (a wave filling the whole space, with only one frequency) propagate is called the phase velocity \"v\". An actual physical signal with a finite extent (a pulse of light) travels at a different speed. The largest part of the pulse travels at the group velocity \"v\", and its earliest part travels at the front velocity \"v\".\n", "Light that travels through transparent matter does so at a lower speed than \"c\", the speed of light in a vacuum. For example, photons engage in so many collisions on the way from the core of the sun that radiant energy can take about a million years to reach the surface; however, once in open space, a photon takes only 8.3 minutes to reach Earth. The factor by which the speed is decreased is called the refractive index of the material. In a classical wave picture, the slowing can be explained by the light inducing electric polarization in the matter, the polarized matter radiating new light, and that new light interfering with the original light wave to form a delayed wave. In a particle picture, the slowing can instead be described as a blending of the photon with quantum excitations of the matter to produce quasi-particles known as polariton (other quasi-particles are phonons and excitons); this polariton has a nonzero effective mass, which means that it cannot travel at \"c\". Light of different frequencies may travel through matter at different speeds; this is called dispersion (not to be confused with scattering). In some cases, it can result in extremely slow speeds of light in matter. The effects of photon interactions with other quasi-particles may be observed directly in Raman scattering and Brillouin scattering.\n" ]

[ "Originally, \"martingale\" referred to a class of betting strategies that was popular in 18th-century France. The simplest of these strategies was designed for a game in which the gambler wins their stake if a coin comes up heads and loses it if the coin comes up tails. The strategy had the gambler double their bet after every loss so that the first win would recover all previous losses plus win a profit equal to the original stake. As the gambler's wealth and available time jointly approach infinity, their probability of eventually flipping heads approaches 1, which makes the martingale betting strategy seem like a sure thing. However, the exponential growth of the bets eventually bankrupts its users due to finite bankrolls. Stopped Brownian motion, which is a martingale process, can be used to model the trajectory of such games.\n", "The martingale strategy fails even with unbounded stopping time, as long as there is a limit on earnings or on the bets (which is also true in practice). It is only with unbounded wealth, bets \"and\" time that it could be argued that the martingale becomes a winning strategy.\n", "A martingale is any of a class of betting strategies that originated from and were popular in 18th century France. The simplest of these strategies was designed for a game in which the gambler wins the stake if a coin comes up heads and loses it if the coin comes up tails. The strategy had the gambler double the bet after every loss, so that the first win would recover all previous losses plus win a profit equal to the original stake. The martingale strategy has been applied to roulette as well, as the probability of hitting either red or black is close to 50%.\n", "The strategy can pay dividends when gamblers successfully reduce the potential winners of an event to a select few from the field or when information about runners not expected to perform well does not reach the market (so as to affect the odds), making it profitable to back the rest of the field.\n", "Although the Kelly strategy's promise of doing better than any other strategy in the long run seems compelling, some economists have argued strenuously against it, mainly because an individual's specific investing constraints may override the desire for optimal growth rate. The conventional alternative is expected utility theory which says bets should be sized to maximize the expected utility of the outcome (to an individual with logarithmic utility, the Kelly bet maximizes expected utility, so there is no conflict; moreover, Kelly's original paper clearly states the need for a utility function in the case of gambling games which are played finitely many times). Even Kelly supporters usually argue for fractional Kelly (betting a fixed fraction of the amount recommended by Kelly) for a variety of practical reasons, such as wishing to reduce volatility, or protecting against non-deterministic errors in their advantage (edge) calculations.\n", "This is also known as the reverse martingale. In a classic martingale betting style, gamblers increase bets after each loss in hopes that an eventual win will recover all previous losses. The anti-martingale approach instead increases bets after wins, while reducing them after a loss. The perception is that the gambler will benefit from a winning streak or a \"hot hand\", while reducing losses while \"cold\" or otherwise having a losing streak. As the single bets are independent from each other (and from the gambler's expectations), the concept of winning \"streaks\" is merely an example of gambler's fallacy, and the anti-martingale strategy fails to make any money. If on the other hand, real-life stock returns are serially correlated (for instance due to economic cycles and delayed reaction to news of larger market participants), \"streaks\" of wins or losses do happen more often and are longer than those under a purely random process, the anti-martingale strategy could theoretically apply and can be used in trading systems (as trend-following or \"doubling up\"). (But see also dollar cost averaging.)\n", "Betting exchanges compete with the traditional bookmaker. They are generally able to offer punters better odds because of their much lower overheads but also give opportunities for arbitrage, the practice of taking advantage of a price differential between two or more markets. However, traditionally, arbitrage has always been possible by backing all outcomes with bookmakers (dutching), as opposed to laying an outcome on an exchange. Exchanges, however, allow bookmakers to see the state of the market and set their odds accordingly.\n" ]

[ "Molecules of carbohydrates and fats consist of carbon, hydrogen, and oxygen atoms. Carbohydrates range from simple monosaccharides (glucose, fructose and galactose) to complex polysaccharides (starch). Fats are triglycerides, made of assorted fatty acid monomers bound to a glycerol backbone. Some fatty acids, but not all, are essential in the diet: they cannot be synthesized in the body. Protein molecules contain nitrogen atoms in addition to carbon, oxygen, and hydrogen. The fundamental components of protein are nitrogen-containing amino acids, some of which are essential in the sense that humans cannot make them internally. Some of the amino acids are convertible (with the expenditure of energy) to glucose and can be used for energy production, just as ordinary glucose, in a process known as gluconeogenesis. By breaking down existing protein, the carbon skeleton of the various amino acids can be metabolized to intermediates in cellular respiration; the remaining ammonia is discarded primarily as urea in urine.\n", "Molecules of carbohydrates and fats consist of carbon, hydrogen, and oxygen atoms. Carbohydrates range from simple monosaccharides (glucose, fructose, galactose) to complex polysaccharides (starch). Fats are triglycerides, made of assorted fatty acid monomers bound to a glycerol backbone. Some fatty acids, but not all, are essential in the diet: they cannot be synthesized in the body. Protein molecules contain nitrogen atoms in addition to carbon, oxygen, and hydrogen. The fundamental components of protein are nitrogen-containing amino acids, some of which are essential in the sense that humans cannot make them internally. Some of the amino acids are convertible (with the expenditure of energy) to glucose and can be used for energy production just as ordinary glucose. By breaking down existing protein, some glucose can be produced internally; the remaining amino acids are discarded, primarily as urea in urine. This occurs naturally when atrophy takes place, or during periods of starvation.\n", "Molecules of carbohydrates and fats consist of carbon, hydrogen, and oxygen atoms. Carbohydrates range from simple monosaccharides (glucose, fructose, galactose) to complex polysaccharides (starch). Fats are triglycerides, made of assorted fatty acid monomers bound to glycerol backbone. Some fatty acids, but not all, are essential in the diet: they cannot be synthesized in the body. Protein molecules contain nitrogen atoms in addition to carbon, oxygen, and hydrogen. The fundamental components of protein are nitrogen-containing amino acids. Essential amino acids cannot be made by the animal. Some of the amino acids are convertible (with the expenditure of energy) to glucose and can be used for energy production just as ordinary glucose. By breaking down existing protein, some glucose can be produced internally; the remaining amino acids are discarded, primarily as urea in urine. This occurs normally only during prolonged starvation.\n", "Proteins are essential nutrients for the human body. They are one of the building blocks of body tissue and can also serve as a fuel source. As a fuel, proteins provide as much energy density as carbohydrates: 4 kcal (17 kJ) per gram; in contrast, lipids provide 9 kcal (37 kJ) per gram. The most important aspect and defining characteristic of protein from a nutritional standpoint is its amino acid composition.\n", "A complete protein or whole protein is a food source of protein that contains an adequate proportion of each of the nine essential amino acids necessary in the human diet. Examples of single-source complete proteins are red meat, poultry, fish, eggs, milk, cheese, yogurt, soybeans and quinoa. The concept does not include whether or not the food source is high in total protein, or any other information about that food's nutritious value.\n", "Proteins are composed of carbon, hydrogen, oxygen, and nitrogen arranged in a variety of ways to form a large combination of amino acids. Unlike fat the body has no storage deposits of protein. All of it is contained in the body as important parts of tissues, blood hormones, and enzymes. The structural components of the body that contain these amino acids are continually undergoing a process of breakdown and replacement. The respiratory quotient for protein metabolism can be demonstrated by the chemical equation for oxidation of albumin:\n", "Proteins are the basis of many animal body structures (e.g. muscles, skin, and hair). They also form the enzymes which control chemical reactions throughout the body. Each molecule is composed of amino acids which are characterized by the inclusion of nitrogen and sometimes sulfur. The body requires amino acids to produce new proteins (protein retention) and to replace damaged proteins (maintenance). As there is no protein or amino acid storage provision, amino acids must be present in the diet. Excess amino acids are discarded, typically in the urine. For all animals, some amino acids are \"essential\" (an animal cannot produce them internally) and some are \"non-essential\" (the animal can produce them from other nitrogen-containing compounds). A diet that contains adequate amounts of amino acids (especially those that are essential) is particularly important in some situations: during early development and maturation, pregnancy, lactation, or injury (a burn, for instance). \n" ]

[ "While having been a relatively unknown system due to the failure of authoritarianism within the First World during the Cold War, with the transition of authoritarian countries such as China and Russia to capitalist economic models, authoritarian capitalism has recently rose into prominence. While it was initially thought that changing to a capitalist model would lead to the formation of a liberal democracy within authoritarian countries, the continued persistence of an authoritarian capitalist models has led to this view decreasing in popularity. Furthermore, some have argued that by utilising capitalist economic models authoritarian governments have improved the stability of their regimes through improving the quality of life of their citizenship. Highlighting this appeal, Robert Kagan stated: \"There's no question that China is an attractive model for autocrats who would like to be able to pursue economic growth without losing control of the levers of power\".\n", "During the adoption of varying forms of market economy, there was a general decline in living standards for many former Communist countries. Political reforms were varied, but in only four countries were Communist parties able to retain a monopoly on power, namely China, Cuba, Laos and Vietnam (North Korea went through a constitutional change in 2009 that made it nominally no longer Communist, but still \"de facto\" organised on Stalinist lines). Many communist and socialist organisations in the West turned their guiding principles over to social democracy and democratic socialism. Communist parties in Italy and San Marino suffered and the reformation of the Italian political class took place in the early 1990s. In South America, the Pink tide began with Venezuela in 1999 and swept through the early 2000s. The European political landscape changed drastically, with several former Eastern Bloc countries joining NATO and the European Union, resulting in stronger economic and social integration with Western Europe and the United States.\n", "By the beginning of the 21st century, capitalism had become the pervasive economic system worldwide. The collapse of the Soviet bloc in 1991 significantly reduced the influence of Socialism as an alternative economic system. Socialist movements continue to be influential in some parts of the world, most notably Latin-American Bolivarianism, with some having ties to more traditional anti-capitalist movements, such as Bolivarian Venezuela's ties to communist Cuba.\n", "Gotfred Appel's big ideological theory was published in extensive series of articles in \"Communist Briefing\" during 1966 and 1967. His \"leech state theory\" theorized that the rich countries make so much money by exploiting 3rd world countries that even their \"poorest\" citizens are so rich they are effectively \"bribed\" into being part of the Capitalist bourgeoisie and unlikely to participate in any Communist revolution until this source of wealth dries out due to liberation of the 3rd world. Accordingly, western communists who really want a communist ideal state must first help liberate the 3rd world countries from western exploitation. This theory will be the basis of all future activities in both the party and the gang. The theory is later published as a book. During the fall of 1967, Jens Holger Jensen made the acquaintance of Gottfred Appel during a small one-man KAK-demonstration and almost immediately began helping out and soon joined KAK.\n", "Communism was strengthened as a force in Western democracies when the global economy crashed in 1929 in what became known as the Great Depression. Many people saw this as the first stage of the end of the capitalist system and were attracted to Communism as a solution to the economic crisis, especially as the Soviet Union's economic development in the 1930s was strong, unaffected by the capitalist world's crisis.\n", "Socialist and Communist parties around the world saw drops in membership after the Berlin Wall fell and the public felt that free market ideology had won. Libertarian, neoliberal, nationalist and Islamist parties on the other hand benefited from the fall of the Soviet Union. As capitalism had \"won\", as people saw it, socialism and communism in general declined in popularity. Social-Democratic Scandinavian countries privatized many of their commons in the 1990s and a political debate on modern institutions re-opened. Scandinavian nations are now more seen as social democrat (see Nordic model).\n", "All the countries concerned have abandoned the traditional tools of communist economic control and moved more or less successfully toward free market systems. Although some (including Charles Paul Lewis) stress the beneficial effect of multinational investment, the reforms also had important negative consequences that are still unfolding.\n" ]

[ "Historically, the cause of skin lightening goes back to colonialism, where individuals with lighter skin received greater privilege than those of darker tones. This built a racial hierarchy and color ranking within colonized African nations, leaving psychological effects on many of the darker skinned individuals.\n", "Natural skin color can darken as a result of tanning due to exposure to sunlight. The leading theory is that skin color adapts to intense sunlight irradiation to provide partial protection against the ultraviolet fraction that produces damage and thus mutations in the DNA of the skin cells. There is a correlation between the geographic distribution of ultraviolet radiation (UVR) and the distribution of indigenous skin pigmentation around the world. Darker-skinned populations are found in the regions with the most ultraviolet, closer to the equator, while lighter skinned populations live closer to the poles, with less UVR, though immigration has changed these patterns.\n", "The genetic mutations leading to light skin, though partially different among East Asians and Western Europeans, suggest the two groups experienced a similar selective pressure after settlement in northern latitudes.\n", "Dark-skinned populations inhabiting Africa, Australia, Melanesia, Papua New Guinea and South Asia all live in some of the areas with the highest UV radiation in the world, and have evolved very dark skin pigmentations as protection from the harmful sun rays. Evolution has restricted humans with darker skin in tropical latitudes, especially in non-forested regions, where ultraviolet radiation from the sun is usually the most intense. Different dark-skinned populations are not necessarily closely related genetically. Before the modern mass migration, it has been argued that the majority of dark pigmented people lived within 20° of the equator.\n", "Light skinned is frequently marketed via billboards and posters that feature light skinned models, playing on the public perception that looking multiracial or having lighter skin makes one more attractive. Some Ghanaians also believe that if a lighter-skinned person is in a position of power, that they bleached to get into that position and is bleaching to maintain it. Historians such as Jemima Pierre theorize that the desire for lighter colored skin stem from apartheid and the British colonization of West Africa. White skin asserted class privilege and distinct racial privilege, prompting many Ghanaians to bleach their skin to achieve a similar color. Over time this also became a major determinant of beauty, especially among Ghanaian women, and by the 1980s skin bleaching had spread throughout all socioeconomic classes of women. Despite being a common practice among Ghanaians, lower-class people are often openly ridiculed for skin bleaching. Blacks who bleach their skin (regardless of socioeconomic status) are often ridiculed for aspiring and ultimately failing to become white.\n", "Convergent evolution in humans includes blue eye colour and light skin colour. When humans migrated out of Africa, they moved to more northern latitudes with less intense sunlight. It was beneficial to them to reduce their skin pigmentation. It appears certain that there was some lightening of skin colour \"before\" European and East Asian lineages diverged, as there are some skin-lightening genetic differences that are common to both groups. However, after the lineages diverged and became genetically isolated, the skin of both groups lightened more, and that additional lightening was due to \"different\" genetic changes.\n", "Nevertheless, some social groups favor specific skin coloring. The preferred skin tone varies by culture and has varied over time. A number of indigenous African groups, such as the Maasai, associated pale skin with being cursed or caused by evil spirits associated with witchcraft. They would abandon their children born with conditions such as albinism and showed a sexual preference for darker skin.\n" ]

[ "Classical waves transfer energy without transporting matter through the medium (material). For example, waves in a pond do not carry the water molecules from place to place; rather the wave's energy travels through the water, leaving the water molecules in place. Additionally, charged particles, such as electrons and protons create electromagnetic fields when they move, and these fields transport the type of energy known as electromagnetic radiation, or light. A changing magnetic field will induce a changing electric field and vice versa—the two are linked. These changing fields form electromagnetic waves. Electromagnetic waves differ from mechanical waves in that they do not require a medium to propagate. This means that electromagnetic waves can travel not only through air and solid materials, but also through the vacuum of space.\n", "An electric charge has an electric field, and if the charge is moving it also generates a magnetic field. The combination of the electric and magnetic field is called the electromagnetic field, and its interaction with charges is the source of the electromagnetic force, which is one of the four fundamental forces in physics. The study of photon-mediated interactions among charged particles is called quantum electrodynamics.\n", "Electromagnetic waves are a result of Maxwell's equations which, in part, state that changing electric fields produce magnetic fields and vice versa. Due to this dependence, the fields form an electromagnetic wave, also called electromagnetic radiation (EMR). The electric and magnetic fields are transverse to each other, and transverse to the direction of propagation of the electromagnetic wave.\n", "Once this electromagnetic field has been produced from a given charge distribution, other charged or magnetised objects in this field may experience a force. If these other charges and currents are comparable in size to the sources producing the above electromagnetic field, then a new net electromagnetic field will be produced. Thus, the electromagnetic field may be viewed as a dynamic entity that causes other charges and currents to move, and which is also affected by them. These interactions are described by Maxwell's equations and the Lorentz force law. This discussion ignores the radiation reaction force.\n", "The wave propagates in the direction of the magnetic field, although waves exist at oblique incidence and smoothly change into the magnetosonic wave when the propagation is perpendicular to the magnetic field.\n", "The force acts on the charged particles themselves, hence charge has a tendency to spread itself as evenly as possible over a conducting surface. The magnitude of the electromagnetic force, whether attractive or repulsive, is given by Coulomb's law, which relates the force to the product of the charges and has an inverse-square relation to the distance between them. The electromagnetic force is very strong, second only in strength to the strong interaction, but unlike that force it operates over all distances. In comparison with the much weaker gravitational force, the electromagnetic force pushing two electrons apart is 10 times that of the gravitational attraction pulling them together.\n", "As an electromagnetic wave travels through space, energy is transferred from the source to other objects (receivers). The rate of this energy transfer depends on the strength of the EM field components. Simply put, the rate of energy transfer per unit area (power density) is the product of the electric field strength (E) times the magnetic field strength (H).\n" ]

[ "By the late 19th century, Price's Candles, based in London, was the largest candle manufacturer in the world. Founded by William Wilson in 1830, the company pioneered the implementation of the technique of steam distillation, and was thus able to manufacture candles from a wide range of raw materials, including skin fat, bone fat, fish oil and industrial greases.\n", "By the late 19th century, Price's Candles, based in London was the largest candle manufacturer in the world. The company traced its origins back to 1829, when William Wilson invested in of coconut plantation in Sri Lanka. His aim was to make candles from coconut oil. Later he tried palm oil from palm trees. An accidental discovery swept all his ambitions aside when his son George Wilson, a talented chemist, distilled the first petroleum oil in 1854. George also pioneered the implementation of the technique of steam distillation, and was thus able to manufacture candles from a wide range of raw materials, including skin fat, bone fat, fish oil and industrial greases.\n", "During the Middle Ages, tallow candles were most commonly used. By the 13th century, candle making had become a guild craft in England and France. The candle makers (chandlers) went from house to house making candles from the kitchen fats saved for that purpose, or made and sold their own candles from small candle shops. Beeswax, compared to animal-based tallow, burned cleanly, without smoky flame. Beeswax candles were expensive, and relatively few people could afford to burn them in their homes in medieval Europe. However, they were widely used for church ceremonies.\n", "Candles were commonplace throughout Europe in the Middle Ages. Candle makers (known as chandlers) made candles from fats saved from the kitchen or sold their own candles from within their shops. The trade of the chandler is also recorded by the more picturesque name of \"smeremongere\", since they oversaw the manufacture of sauces, vinegar, soap and cheese. The popularity of candles is shown by their use in Candlemas and in Saint Lucy festivities.\n", "In parts of Europe, the Middle-East and Africa, where lamp oil made from olives was readily available, candle making remained unknown until the early middle-ages. Candles were primarily made from tallow and beeswax in ancient times, but have been made from spermaceti, purified animal fats (stearin) and paraffin wax in recent centuries.\n", "By the early 18th century, the custom had become common in towns of the upper Rhineland, but it had not yet spread to rural areas. Wax candles, expensive items at the time, are found in attestations from the late 18th century.\n", "Despite advances in candle making, the candle industry declined rapidly upon the introduction of superior methods of lighting, including kerosene and lamps and the 1879 invention of the incandescent light bulb. From this point on, candles came to be marketed as more of a decorative item.\n" ]

[ "The presence of heavier elements hails from stellar nucleosynthesis, the theory that the majority of elements heavier than hydrogen and helium in the Universe (\"metals\", hereafter) are formed in the cores of stars as they evolve. Over time, stellar winds and supernovae deposit the metals into the surrounding environment, enriching the interstellar medium and providing recycling materials for the birth of new stars. It follows that older generations of stars, which formed in the metal-poor early Universe, generally have lower metallicities than those of younger generations, which formed in a more metal-rich Universe.\n", "The main exception to this is the kinetic isotope effect: due to their larger masses, heavier isotopes tend to react somewhat more slowly than lighter isotopes of the same element. This is most pronounced by far for protium (), deuterium (), and tritium (), because deuterium has twice the mass of protium and tritium has three times the mass of protium. These mass differences also affect the behavior of their respective chemical bonds, by changing the center of gravity (reduced mass) of the atomic systems. However, for heavier elements the relative mass difference between isotopes is much less, so that the mass-difference effects on chemistry are usually negligible. (Heavy elements also have relatively more neutrons than lighter elements, so the ratio of the nuclear mass to the collective electronic mass is slightly greater.)\n", "For elements lighter than iron on the periodic table, nuclear fusion releases energy. For iron, and for all of the heavier elements, nuclear fusion consumes energy. Chemical elements up to the iron peak are produced in ordinary stellar nucleosynthesis, with the alpha elements being particular abundant. Some heavier elements are produced by less efficient processes such as the r-process and s-process. Elements with atomic numbers close to iron are produced in large quantities in supernova due to explosive oxygen and silicon fusion, followed by radioactive decay of nuclei such as Nickel-56. On average, heavier elements are less abundant in the universe, but some of those near iron are comparatively more abundant than would be expected from this trend.\n", "Besides mass, the elements heavier than helium can play a significant role in the evolution of stars. Astronomers label all elements heavier than helium \"metals\", and call the chemical concentration of these elements in a star, its metallicity. A star's metallicity can influence the time the star takes to burn its fuel, and controls the formation of its magnetic fields, which affects the strength of its stellar wind. Older, population II stars have substantially less metallicity than the younger, population I stars due to the composition of the molecular clouds from which they formed. Over time, such clouds become increasingly enriched in heavier elements as older stars die and shed portions of their atmospheres.\n", "Heavy metals up to the vicinity of iron (in the periodic table) are largely made via stellar nucleosynthesis. In this process, lighter elements from hydrogen to silicon undergo successive fusion reactions inside stars, releasing light and heat and forming heavier elements with higher atomic numbers.\n", "In general, elements up to iron are made in large stars in the process of becoming supernovae. Iron-56 is particularly common, since it is the most stable element that can easily be made from alpha particles (being a product of decay of radioactive nickel-56, ultimately made from 14 helium nuclei). Elements heavier than iron are made in energy-absorbing processes in large stars, and their abundance in the universe (and on Earth) generally decreases with increasing atomic number.\n", "Physical and chemical characterisations of heavy metals need to be treated with caution, as the metals involved are not always consistently defined. As well as being relatively dense, heavy metals tend to be less reactive than lighter metals and have much less soluble sulfides and hydroxides. While it is relatively easy to distinguish a heavy metal such as tungsten from a lighter metal such as sodium, a few heavy metals, such as zinc, mercury, and lead, have some of the characteristics of lighter metals, and, lighter metals such as beryllium, scandium, and titanium, have some of the characteristics of heavier metals.\n" ]

[ "Hand hygiene is defined as hand washing or washing hands and nails with soap and water or using a water less hand sanitizer. Hand hygiene is central to preventing spread of infectious diseases in home and everyday life settings.\n", "For hand care they are designed to protect against the harm from detergents and other irritants. To help prevent the spread of pathogens, health care providers are required to wash their hands frequently. Frequent hand washing can result in chronic damage termed irritant contact dermatitis which includes dryness, irritation, itching, and more seriously, cracking and bleeding. Irritant contact dermatitis is very common among nurses, ranging from 25% to 55%, with as many as 85% relating a history of having skin problems. The World Health Organization has considered the use of barrier creams and has found their efficacy to be \"equivocal\" and too expensive to be considered in health-care settings where resources are limited.\n", "The CDC recommends, \"To prevent infections in general, persons should stay home if they are ill, wash their hands often with soap and water, avoid close contact (such as touching and shaking hands) with those who are ill, and clean and disinfect frequently touched surfaces.\"\n", "Handwashing helps to prevent the spread of foodborne illnesses to children. Pathogenic microorganisms can be transmitted from other children and their diapers, and from uncooked meat, seafood, eggs, dogs, cats, turtles, snakes, birds, lizards, and soil.\n", "2. To promote hand-washing. Many diseases and illnesses can be prevented by washing hands with soap and water, especially when handling food. Similarly, they wish to promote menstrual hygiene management, a topic that is highly taboo in certain cultures.\n", "The purpose of hand-washing in the health-care setting is to remove pathogenic microorganisms (\"germs\") and avoid transmitting them. The \"New England Journal of Medicine\" reports that a lack of hand-washing remains at unacceptable levels in most medical environments, with large numbers of doctors and nurses routinely forgetting to wash their hands before touching patients, thus transmitting microorganisms. One study showed that proper hand-washing and other simple procedures can decrease the rate of catheter-related bloodstream infections by 66 percent.\n", "Compulsive washing is usually found in individuals that have a fear of contamination. People that have compulsive hand washing behaviors wash their hands repeatedly throughout the day. These hand washings can be ritualized and follow a pattern. People that have problems with compulsive hand washing tend to have problems with chapped or red hands due to the excessive amount of washing done each day.\n" ]

[ "Anger causes a reduction in cognitive ability and the accurate processing of external stimuli. Dangers seem smaller, actions seem less risky, ventures seem more likely to succeed, and unfortunate events seem less likely. Angry people are more likely to make risky decisions, and make less realistic risk assessments. In one study, test subjects primed to feel angry felt less likely to suffer heart disease, and more likely to receive a pay raise, compared to fearful people. This tendency can manifest in retrospective thinking as well: in a 2005 study, angry subjects said they thought the risks of terrorism in the year following 9/11 in retrospect were low, compared to what the fearful and neutral subjects thought.\n", "A person who is angry tends to place more blame on another person for their misery. This can create a feedback, as this extra blame can make the angry person angrier still, so they in turn place yet more blame on the other person.\n", "An angry person tends to anticipate other events that might cause them anger. They will tend to rate anger-causing events (e.g. being sold a faulty car) as more likely than sad events (e.g. a good friend moving away).\n", "Research on emotion has shown that anger is often caused by interruptions of plans and expectations, especially through the violation of social norms. This sense of anger can be magnified when the individual does not understand why they are unable to meet their goal or task at hand or why there was a violation of social norms. Psychologists have argued that this is particularly relevant to computer rage, as computer users interact with computers in a similar manner that they interact with other people (for more information, see The Media Equation). Thus, when computers fail to function in the face of incoming deadlines or an important task to accomplish, users can feel betrayed by the computer in the same way they can feel betrayed by other people. Specifically, when users fail to understand why their computer will not work properly, often in the times they need it to the most, it can invoke a sense of hostility as it is interpreted as a breach of social norms or a personal attack. Consistent with this finding, perceived betrayal by the computer can also elicit other negative emotions. One survey of US adults reported that 10% of users who experience computer issues experienced feeling helplessness, and 4% reported feeling victimized. In the same survey, 7% adults ages 18–34 reported that they had cried over their computer problems within the previous six months.\n", "People feel angry when they sense that they or someone they care about has been offended, when they are certain about the nature and cause of the angering event, when they are convinced someone else is responsible, and when they feel they can still influence the situation or cope with it. For instance, if a person's car is damaged, they will feel angry if someone else did it (e.g. another driver rear-ended it), but will feel sadness instead if it was caused by situational forces (e.g. a hailstorm) or guilt and shame if they were personally responsible (e.g. he crashed into a wall out of momentary carelessness). Psychotherapist Michael C. Graham defines anger in terms of our expectations and assumptions about the world. Graham states anger almost always results when we are caught up \"... expecting the world to be different than it is\".\n", "People feel angry when they sense that they or someone they care about has been offended, when they are certain about the nature and cause of the angering event, when they are certain someone else is responsible, and when they feel they can still influence the situation or cope with it.\n", "29. Let us examine as to why a person sometimes gets annoyed when he hears an insult, and other times he endures it without getting agitated. What is the reason for this contrast? And is there one reason or are there several? There are several reasons, although they are all born from a main one. Sometimes it happens that after praying or completing a benevolent exercise, the person finds himself in a kind spiritual disposition and therefore, is amenable to his brother and doesn't get annoyed over his words. It also happens that a person is partial to another, and as a consequence, endures without any annoyance, everything that the individual inflicts upon him. It also happens that a person may despise the individual who wants to insult him, and therefore ignores him.\n" ]

[ "After a certain period, an equilibrium is reached: the drop has cooled to a point where the rate of heat carried away in evaporation is equal to the heat gain through convection. At this point, the following balance of energy per interface area is true:\n", "Because of this effect, the lowering of temperature in moist, cold ground does not happen at a uniform rate. The loss of heat through conduction is reduced when water freezes, and latent heat is released. This heat of fusion is continually released until all the subsurface water has frozen, at which point temperatures can continue to fall.\n", "Changes to the normal human body temperature may result in discomfort. The most common such change is a fever, a temporary elevation of the body's thermoregulatory set-point, typically by about 1–2 °C (1.8–3.6 °F). Hyperthermia is an acute condition caused by the body absorbing more heat than it can dissipate, whereas hypothermia is a condition in which the body's core temperature drops below that required for normal metabolism, and which is caused by the body's inability to replenish the heat that is being lost to the environment.\n", "Clearly, the temperature gradient may change substantially in time, as a result of diurnal or seasonal heating and cooling for instance. This most likely happens during an inversion. For instance, during the day the temperature at ground level may be cold while it's warmer up in the atmosphere. As the day shifts over to night the temperature might drop rapidly while at other places on the land stay warmer or cooler at the same elevation. This happens on the West Coast of the United States sometimes due to geography.\n", "In meteorology, an inversion, also known as a temperature inversion, is a deviation from the normal change of an atmospheric property with altitude. It almost always refers to an inversion of the thermal lapse rate. Normally, air temperature decreases with an increase in altitude. During an inversion, warmer air is held above cooler air; the normal temperature profile with altitude is inverted. \n", "Clearly this doesn't happen. It turns out that, as the drop starts cooling, it's now colder than the air, so convective heat transfer begins to occur from the air to the drop. Also, understand that the evaporation rate depends on the \"difference of concentration of water vapor\" between the drop-stream interface and the distant stream (i.e. the \"original\" stream, unaffected by the drop) and on a \"convective mass transfer coefficient,\" which is a function of the components of the mixture (i.e. water and air).\n", "From this equation, we note that if we keep enthalpy constant and increase volume, temperature must change depending on the sign of formula_9. Therefore, our inversion temperature is given where the sign flips at zero, or\n" ]

[ "A 1-in-5 dilution of household bleach with water (1 part bleach to 4 parts water) is effective against many bacteria and some viruses, and is often the disinfectant of choice in cleaning surfaces in hospitals (primarily in the United States). Even \"scientific-grade\", commercially produced disinfection solutions such as Virocidin-X usually have sodium hypochlorite as their sole active ingredient, though they also contain surfactants (to prevent beading) and fragrances (to conceal the bleach smell).\n", "Liquid bleaches for domestic use fall in 3 categories: for pool-treatment (10% hypochlorite solutions, without surfactants and detergents) for laundry and general purpose cleaning, at 3–5% active chlorine (which are usually recommended to be diluted substantially before use), and in pre-mixed specialty formulations targeted at particular cleaning, bleaching or disinfecting applications. Commercial chlorine bleaches range from under 10% active chlorine to over 40%. \n", "Solutions of ammonia (5–10% by weight) are used as household cleaners, particularly for glass. These solutions are irritating to the eyes and mucous membranes (respiratory and digestive tracts), and to a lesser extent the skin. Caution should be used that the chemical is never mixed into any liquid containing bleach, as a toxic gas may result. Mixing with chlorine-containing products or strong oxidants, such as household bleach, can lead to hazardous compounds such as chloramines.\n", "The benefits of chlorine bleach include its inexpensive and fast acting nature. However it is harmful to mucous membranes and skin upon contact, has a strong odour; is not effective against \"Giardia lamblia\" and \"Cryptosporidium\"; and combination with other cleaning products such as ammonia and vinegar can generate noxious gases like chlorine. The best practice is not to add anything to household bleach except water. As with most disinfectants, the area requiring disinfection should be cleaned before the application of the chlorine bleach, as the presence of organic materials may inactivate chlorine bleach.\n", "For liquids and small quantities, a 1–10% solution of bleach can be used to disinfect biomedical waste. Solutions of sodium hydroxide and other chemical disinfectants may also be used, depending on the waste's characteristics. Other treatment methods include heat, alkaline digesters and the use of microwaves.\n", "Chlorine bleach tablets give a more stable platform for disinfecting the water than liquid bleach (sodium hypochlorite) as the liquid version tends to degrade with age and give unregulated results unless assays are carried outnot practical on the spot. Still, despite chlorine-based halazone tablets falling from favor for portable water purification, chlorine-based bleach may nonetheless safely be used for short-term emergency water disinfection. Two drops of unscented 5% bleach can be added per liter or quart of clear water, then allowed to stand covered for 30 to 60 minutes. After this treatment, the water may be left open to reduce the chlorine smell and taste. Guidelines are available online for effective emergency use of bleach to render unsafe water potable.\n", "Chlorinated plastic can release harmful chemicals into the surrounding soil, which can then seep into groundwater or other surrounding water sources and also the ecosystem of the world. This can cause serious harm to the species that drink the water.\n" ]

[ "Traces of onions recovered from Bronze Age settlements in China suggest that onions were used as far back as 5000 BCE, not only for their flavour, but the bulb's durability in storage and transport. Ancient Egyptians revered the onion bulb, viewing its spherical shape and concentric rings as symbols of eternal life. Onions were used in Egyptian burials, as evidenced by onion traces found in the eye sockets of Ramesses IV.\n", "\"The fact that perfumes are absorbed and retained by oils and fats was known in Egypt at an early date, and later to the Greeks and Romans; it was the basis of perfume-making in the ancient world, and it is still the principle of one of the modern methods employed when dealing with certain delicate flower-perfumes. Balanos oil, which is obtained from the seeds of \"Balanitesa egyptiaca\", a tree that at one time grew plentifully in Egypt and is still abundant in the Sudan (where it is called \"heglig\"), is a bland odourless oil that does not readily become rancid and is hence very suitable for making perfumes. If balanos oil be warmed with myrrh, the volatile oil of the myrrh is absorbed by the fixed (non-volatile) balanos oil, which in consequence becomes perfumed, and when the extraction is finished, the perfumed balanos oil can be separated from the exhausted and useless residue by pressing.\" \n", "The Egyptians were famous for producing perfumes throughout the ancient world. They were formulated from plants and flowers before they could be added to other oils. It was later refined and developed by al-Shaykh al-Raisa renowned physician who made a distinctive type of aromatic product. He was referred to as Abi Ali al Sina. He was among the first people to come with the technique of distillation of roses and other plant fragrances. Liquid perfumes used to be a mixture of oil and crushed herbs until his discovery where he first experimented with roses.\n", "Combustible bouquets were used by the ancient Egyptians, who employed incense in both pragmatic and mystical capacities. Incense was burnt to counteract or obscure malodorous products of human habitation, but was widely perceived to also deter malevolent demons and appease the gods with its pleasant aroma. Resin balls were found in many prehistoric Egyptian tombs in El Mahasna, giving evidence for the prominence of incense and related compounds in Egyptian antiquity. One of the oldest extant incense burners originates from the 5th dynasty. The Temple of Deir-el-Bahari in Egypt contains a series of carvings that depict an expedition for incense.\n", "Funerary cones were small cones made from clay that were used in Ancient Egypt, almost exclusively in the Theban necropolis. The items were placed over the entrance of the chapel of a tomb. Early examples have been found from the Eleventh Dynasty. However, they are generally undecorated. During the New Kingdom, the cones were smaller in size and inscribed in hieroglyphs with the title and name of the tomb owner, often with a short prayer. The exact purpose of the cones is unknown, but hypotheses exist that they variously served as passports, architectural features, and symbolic offerings, among others.\n", "The ancient Egyptian garden would have looked different from a modern garden. It would have seemed more like a collection of herbs or a patch of wild flowers, lacking the specially bred flowers of today. Flowers like the iris, chrysanthemum, lily and delphinium (blue), were certainly known to the ancients but do not feature much in garden scenes. Formal bosquets seem to have been composed of mandrake, poppy, cornflower and or lotus and papyrus.\n", "Such rods were also used for walking sticks, splints, for stirring boiling liquids, and for corporal punishment. Some of the mythology may have transferred to the related galbanum which was referred to as the sacred “mother resin.” Galbanum was highly treasured as a sacred substance by the ancient Egyptians. The “green” incense of Egyptian antiquity is believed to have been galbanum. Galbanum resin has a very intense green scent accompanied by a turpentine odor. The initial notes are a very bitter, acrid, and peculiar scent followed by a complex green, spicy, woody, balsamlike fragrance. When diluted the scent of galbanum has variously been described as reminiscent of pine (due to the pinene and limonene content), evergreen, green bamboo, parsley, green apples, musk, or simply intense green. The oil has a pine like topnote which is less pronounced in the odor of the resinoid. The latter, in turn, has a more woody balsamic, conifer resinous character. Galbanum is frequently adulterated with pine oil.\n" ]

[ "By one estimate, the human Y chromosome has lost 1,393 of its 1,438 original genes over the course of its existence, and linear extrapolation of this 1,393-gene loss over 300 million years gives a rate of genetic loss of 4.6 genes per million years. Continued loss of genes at the rate of 4.6 genes per million years would result in a Y chromosome with no functional genes – that is the Y chromosome would lose complete function – within the next 10 million years, or half that time with the current age estimate of 160 million years. Comparative genomic analysis reveals that many mammalian species are experiencing a similar loss of function in their heterozygous sex chromosome. Degeneration may simply be the fate of all non-recombining sex chromosomes, due to three common evolutionary forces: high mutation rate, inefficient selection, and genetic drift.\n", "As it has been already mentioned, the Y chromosome is unable to recombine during meiosis like the other human chromosomes; however, in 2003, researchers from MIT discovered a process which may slow down the process of degradation.\n", "However, comparisons of the human and chimpanzee Y chromosomes (first published in 2005) show that the human Y chromosome has not lost any genes since the divergence of humans and chimpanzees between 6–7 million years ago, and a scientific report in 2012 stated that only one gene had been lost since humans diverged from the rhesus macaque 25 million years ago. These facts provide direct evidence that the linear extrapolation model is flawed and suggest that the current human Y chromosome is either no longer shrinking or is shrinking at a much slower rate than the 4.6 genes per million years estimated by the linear extrapolation model.\n", "Sex chromosomes contribute to the majority of chromosome loss events with increasing age. In females, the X chromosome can account for up to 72% of the observed micronuclei of which 37% appear to be lacking a functional kinetochore assembly possibly due to X chromosome inactivation. Multiple studies have shown that the frequencies of autosome-positive micronuclei in both genders and of sex chromosome-positive MN in men were similar and remained unchanged in older groups while the frequency of X-positive MN in women was higher than the average frequency of autosome-positive MN and continued to increase until the oldest age.\n", "Other changes in the number or structure of chromosome 15 can cause mental retardation, delayed growth and development, hypotonia, and characteristic facial features. These changes include an extra copy of part of chromosome 15 in each cell (partial trisomy 15) or a missing segment of the chromosome in each cell (partial monosomy 15). In some cases, several of the chromosome's DNA building blocks (nucleotides) are deleted or duplicated.\n", "The human Y chromosome is particularly exposed to high mutation rates due to the environment in which it is housed. The Y chromosome is passed exclusively through sperm, which undergo multiple cell divisions during gametogenesis. Each cellular division provides further opportunity to accumulate base pair mutations. Additionally, sperm are stored in the highly oxidative environment of the testis, which encourages further mutation. These two conditions combined put the Y chromosome at a greater risk of mutation than the rest of the genome. The increased mutation risk for the Y chromosome is reported by Graves as a factor 4.8. However, her original reference obtains this number for the relative mutation rates in male and female germ lines for the lineage leading to humans.\n", "Methods of estimating the age of the Y-MRCA for a population of human males whose Y-chromosomes have been sequenced are based on applying the theories of molecular evolution to the Y chromosome. Unlike the autosomes, the human Y-chromosome does not recombine often with the X chromosome during meiosis, but is usually transferred intact from father to son; however, it can recombine with the X chromosome in the pseudoautosomal regions at the ends of the Y chromosome. Mutations occur periodically within the Y chromosome, and these mutations are passed on to males in subsequent generations.\n" ]

[ "There is currently no consensus on the placement of elements beyond atomic number 120 in the periodic table. The table below shows one possibility for the appearance of the eighth period, with placement of elements primarily based on their predicted chemistry.\n", "The standard presentation of the chemical elements is in the periodic table, which orders elements by atomic number. The periodic table is arranged in groups, or columns, and periods, or rows. The periodic table is useful in identifying periodic trends.\n", "BULLET::::- In chemistry, Group 11 of the Periodic Table of the Elements (IUPAC numbering) consists of the three coinage metals copper, silver, and gold known from antiquity, and roentgenium, a recently synthesized superheavy element.\n", "Throughout the history of chemistry, several chemical elements have been discovered. In the nineteenth century, Dmitri Mendeleev formulated the periodic table, a table of elements which describes their structure. Because elements have been discovered at various times and places, from antiquity through the present day, their names have derived from several languages and cultures. \n", "His book, \"Die modernen Theorien der Chemie\", which he began writing in Breslau in 1862 and which was published two years later, contained an early version of the periodic table containing 28 elements, classified elements into six families by their valence—for the first time, elements had been grouped according to their valence. Works on organizing the elements by atomic weight, until then had been stymied by the widespread use of equivalent weights for the elements, rather than atomic weights.\n", "An extended periodic table theorizes about chemical elements beyond those currently known in the periodic table and proven up through oganesson, which completes the seventh period (row) in the periodic table at atomic number (\"Z\") 118.\n", "When the first periodic table of the elements was published by Dmitri Mendeleev in the early 1870s, it showed a \" — \" in place after uranium similar to several other places for then-undiscovered elements. Other subsequent tables of known elements, including a 1913 publication of the known radioactive isotopes by Kasimir Fajans, also show an empty place after uranium, element 92.\n" ]

[ "LaVeyan Satanism is a religion founded in 1966 by the American occultist and author Anton Szandor LaVey. Scholars of religion have classified it as a new religious movement and a form of Western esotericism. It is one of several different movements that describe themselves as forms of Satanism.\n", "The Satanist is a black magic/horror novel by Dennis Wheatley. Published in 1960, it is characterized by an anti-communist spy theme. The novel was one of the popular novels of the 1960s popularizing the tabloid notion of a black mass.\n", "LaVeyan Satanists embrace the original etymological meaning of the word \"Satan\" (Hebrew: שָּׂטָן \"satan\", meaning \"adversary\"). According to Peter H. Gilmore, \"The Church of Satan has chosen Satan as its primary symbol because in Hebrew it means adversary, opposer, one to accuse or question. We see ourselves as being these Satans; the adversaries, opposers and accusers of all spiritual belief systems that would try to hamper enjoyment of our life as a human being.\"\n", "LaVeyan Satanism is atheistic, rejecting belief in God and all other deities, including, to the surprise of many, Satan. \"Satanism begins with atheism,\" said Church of Satan High Priest Peter H. Gilmore in an interview. \"We begin with the universe and say, 'It’s indifferent. There’s no God, there’s no Devil. No one cares!'\" The function of God is performed and satisfied by the satanist him/herself. The needs of worship, ritual, and religious/spiritual focus are directed inwards towards the satanist, as opposed to outwards, towards a deity. It rejects concepts such as prayer, the afterlife, and divine forces.\n", "LaVeyan Satanism – which is also sometimes termed \"Modern Satanism\" and \"Rational Satanism\" – is classified by scholars of religious studies as a new religious movement. When used, \"Rational Satanism\" is often employed to distinguish the approach of the LaVeyan Satanists from the \"Esoteric Satanism\" embraced by groups like the Temple of Set. A number of religious studies scholars have also described it as a form of \"self-religion\" or \"self-spirituality\", with religious studies scholar Amina Olander Lap arguing that it should be seen as being both part of the \"prosperity wing\" of the self-spirituality New Age movement and a form of the Human Potential Movement. Conversely, the scholar of Satanism Jesper Aa. Petersen preferred to treat modern Satanism as a \"cousin\" of the New Age and Human Potential movements.\n", "A notable group that outwardly considers themselves to be traditional Satanists is the Order of Nine Angles. This group became controversial and was mentioned in the press and in books, because they promoted human sacrifice. The O9A believes that Satan is one of two 'acausal' eternal beings, the other one being Baphomet, and that Satan is male and Baphomet is female.\n", "LaVeyan Satanism has been characterised as belonging to the political right rather than to the political left. The historian of Satanism Ruben van Luijk characterised it as a form of \"anarchism of the Right\". LaVey was anti-egalitarian and elitist, believing in the fundamental inequality of different human beings. His philosophy was Social Darwinist in basis, having been influenced by the writings of Herbert Spencer, Friedrich Nietzsche, and Ayn Rand. LaVey stated that his Satanism was \"just Ayn Rand's philosophy with ceremony and ritual added\". Characterising LaVey as a Nietzschean, the religious studies scholar Asbjørn Dyrendal nevertheless thought that LaVey's \"personal synthesis seems decidedly his own creation, even though the different ingredients going into it are at times very visible.\" Social Darwinism is particularly noticeable in \"The Book of Satan\", where LaVey uses portions of Redbeard's \"Might Is Right\", though it also appears throughout in references to man's inherent strength and instinct for self-preservation.\n" ]

[ "A file's modification time describes when the content of the file most recently changed. Because most file systems do not compare data written to a file with what is already there, if a program overwrites part of a file with the same data as previously existed in that location, the modification time will be updated even though the contents did not technically change.\n", "BULLET::::- Update: The update process replaces an earlier version of all or part of a software system with a newer release. It commonly consists of deactivation followed by installation. On some systems, such as on Linux when using the system's package manager, the old version of a software application is typically also uninstalled as an automatic part of the process. (This is because Linux package managers do not typically support installing multiple versions of a software application at the same time, unless the software package has been specifically designed to work around this limitation.)\n", "Traditionally, the service provided each patch in its own proprietary archive file. Occasionally, Microsoft released service packs which bundled all updates released over the course of years for a certain product. Starting with Windows 10, however, all patches are delivered in cumulative packages. On 15 August 2016, Microsoft announced that effective October 2016, all future patches to Windows 7 and 8.1 would become cumulative as with Windows 10. The ability to download and install individual updates would be removed as existing updates are transitioned to this model. This has resulted in increasing download sizes of each monthly update. An analysis done by Computerworld determined that the download size for Windows 7 x64 has increased from 119.4MB in October 2016 to 203MB in October 2017. Initially, Microsoft was very vague about specific changes within each cumulative update package. However, since early 2016, Microsoft has begun releasing more detailed information on the specific changes.\n", "In Ubuntu, the Software Updater can update the operating system to new versions which are released every six months for standard releases or every two years for Long Term Support releases. This functionality is included by default in the desktop version but needs to be added to the server version.\n", "In Mac OS 9 and earlier versions of Mac OS X, Software Update was a standalone tool. The program was part of the CoreServices in OS X. It could automatically inform users of new updates (with new features and bug and security fixes) to the operating system, applications, device drivers, and firmware. All updates required the user to enter their administrative password and some required a system restart. It could be set to check for updates daily, weekly, monthly, or not at all; in addition, it could download and store the associated .pkg file (the same type used by Installer) to be installed at a later date, and it maintained a history of installed updates. Starting with Mac OS X 10.5 Leopard, updates that required a reboot logged out the user prior to installation and automatically restarted the computer when complete. In earlier versions of OS X, the updates were installed, but critical files were not replaced until the next system startup.\n", "At the same time, multitenancy increases the risks and impacts inherent in applying a new release version. As there is a single software instance serving multiple tenants, an update on this instance may cause downtime for all tenants even if the update is requested and useful for only one tenant. Also, some bugs and issues resulted from applying the new release could manifest in other tenants' personalized view of the application. Because of possible downtime, the moment of applying the release may be restricted depending on time usage schedule of more than one tenant.\n", "Software update systems allow for updates to be managed by users and software developers. In the 2017 Petya cyberpandemic, the financial software \"MeDoc\"'s update system is said to have been compromised to spread malware via its updates. On the Tor Blog cybersecurity expert Mike Perry states that deterministic, distributed builds are likely the only way to defend against malware that attacks the software development and build processes to infect millions of machines in a single, officially signed, instantaneous update. Update managers also allow for security updates to be applied quickly and widely. Update managers of Linux such as Synaptic allow users to update all software installed on their machine. Applications like Synaptic use cryptographic checksums to verify source/local files before they are applied to ensure fidelity against malware.\n" ]

[ "In May 2007, Vitamin Water was sold to The Coca-Cola Company for $4.1 billion. As part of his endorsement deal, Wright was given 0.5% of the company, and thus netted approximately $20 million from the deal.\n", "In 2010, Null reported that he and six other consumers had been hospitalized for vitamin D poisoning after ingesting a nutritional supplement manufactured by his own contractor. In a lawsuit against the company, he alleged that the supplement erroneously contained more than 1,000 times the dose of vitamin D reported on the label. Null received numerous telephone calls from customers while himself in severe pain.\n", "In 1988, Trump set up the Donald J. Trump Foundation to give away royalties from the book's sales, in Trump's words, promising four or five million dollars \"to the homeless, to Vietnam veterans, for AIDS, multiple sclerosis.\" According to a \"Washington Post\" investigation those donations largely did not happen: the paper said \"he gave less to those causes than he did to his older daughter's ballet school.\" \"The Washington Post\" asked Trump's campaign if Trump had donated the $55,000 Trump earned in the first six months of 2016 to charity, as he promised in the 1980s, and it did not respond.\n", "In 2010, Null and six other consumers were hospitalized for vitamin D poisoning caused by ingesting his own nutritional supplements. Null sued a contractor involved in producing the product, alleging that each contained more than 1,000 times the dose of vitamin D reported on the label.\n", "In December 2008 a 68-year-old friend, who invested her life savings with Madoff, telephoned Dell'Orefice to inform her that she too had been bankrupted by the scheme. Dell'Orefice said, \"For the second time in my life, I've lost all of my life savings.\"\n", "Barney is also revealed to have had a gambling problem, enabled by his mother, who is a bookmaker. However, he assures the group that it is not a problem because he is so good at it. He revealed in \"Atlantic City\" that he lost his entire life savings playing a Chinese game. He has also apparently lost every one of his many bets on the Super Bowl. He will go to any lengths to win a bet, even if it takes one year for just $10.\n", "Donald D. Lapre (May 19, 1964 – October 2, 2011) was an American multi-level marketing and infomercial salesman. His work involved product packages such as \"The Greatest Vitamin in the World\" and \"Making Money Secrets\".\n" ]

[ "A project of the proprietary Virginia Company of London, Jamestown had been established by an initial group of settlers on 14 May 1607. This colony proved as troubled as earlier English settlements. Two return trips with supplies by Christopher Newport arrived in 1608, while another large relief fleet was dispatched in 1609, carrying hundreds of new settlers and supplies across the Atlantic. Heading the Third Supply fleet was the new flagship of the Virginia Company, the \"Sea Venture\", carrying Rolfe and his wife, Sarah Hacker.\n", "The English settlement at Jamestown had been established on May 24, 1607, with the arrival of three ships commanded by Captain Christopher Newport. The initial small group of 104 men and boys chose the location because it was favorable for defensive purposes, but it offered poor hunting prospects and a shortage of drinking water. Although they did some farming, few of the original settlers were accustomed to manual labor or familiar with farming. Hunting on the island was poor, and they quickly exhausted the supply of small game. The colonists were largely dependent upon trade with the Native Americans and periodic supply ships from England for their food.\n", "Colonists of the first successful English settlement, based at Jamestown, had a complicated relationship with Virginia Indians. In the winter of 1607, Opechancanough, chief of the Pamunkey tribe, captured Captain John Smith. Smith was brought to the paramount chief, Chief Powhatan. This first meeting between Powhatan and Smith resulted in an alliance between the two people. Powhatan sent Smith back to Jamestown in the spring of 1608 and started sending gifts of food to the colonists. If not for Powhatan's donations, the settlers would not have survived through the first winters. As the settlement expanded, competition for land and other resources, and conflict between the settlers and Virginia tribes, increased.\n", "Only two weeks after his arrival at the Jamestown Settlement, Spelman went with Captain John Smith on an expedition up the James River to the Indian town called Powhatan. (located in the East End portion of the modern-day city of Richmond, Virginia.) With Jamestown already nearly out of food provisions Smith knew that Jamestown would be unable to support the arrival of several hundred new colonists through the coming winter, and he traded young Henry Spelman's bonded servitude in exchange for the village, which was ruled by \"weroance\" Parahunt, son of Wahunsunacock (also known as Chief Powhatan.) The agreement was also for the boy to apprentice the native Powhatan language, and thus become an interpreter and serve as a messenger between the two cultures. Young Henry Spelman was not the first boy to be traded to the Powhatans; Thomas Savage had previously been given to Powhatan by Captain Christopher Newport in 1608, and Spelman named in his writings of \"Dutchman Samuel\" (actually \"Samuel Collier\" who was John Smith's page) as another European child that lived with the Natives.\n", "Initially, the colonists were governed by a president and seven-member council selected by the King. Leadership problems quickly erupted. Jamestown's first two leaders coped with varying degrees of success with sickness, assaults by Native Americans, poor food and water supplies, and class strife. Many colonists were ill-prepared to carve out a new settlement on a frontier. When Captain John Smith became Virginia's third president, he proved the strong leader that the colony needed. Industry flourished and relations with Chief Powhatan's people improved.\n", "Members of an English voyage of exploration landed in the area in 1603, four years before the founding of the Jamestown Colony. Captain John Smith visited the region in 1608. The \"Accawmacke\" nation at the time numbered around 2000, and were governed by Debedeavon, a paramount chief called by the English the \"Laughing King\". He became a staunch ally of the English newcomers, granting them several large areas for their own use.\n", "Early in Jamestown's history, Smith and the Virginia Company began recruiting workers from the Polish and Baltic region to come to their new colony. The first of these foreign workers came with the second group of settlers who arrived in the colony in 1608; two of these Polish workers would later save Smith's life in an attack by Native Americans as noted in Smith's writings. Contemporary historical accounts refer to this first group of foreign craftsmen as Poles and Dutchmen.\n" ]

[ "There is a further problem of glass defects, striae or small air bubbles trapped within the glass. In addition, glass is opaque to certain wavelengths, and even visible light is dimmed by reflection and absorption when it crosses the air-glass interfaces and passes through the glass itself. Most of these problems are avoided or diminished in reflecting telescopes, which can be made in far larger apertures and which have all but replaced refractors for astronomical research.\n", "When attempting to study space, cosmic dust would tend to hinder the scientists attempting to observe the celestial bodies in space. However, cosmic dust went from a hindrance, to a new and important aspect of scientific study. The Herschel Space Observatory used far reaching infrared equipment which revealed light being emitted from cosmic dust and gasses. This infrared technology allowed the Herschel Space Observatory and scientist to see more objects in space that emit heat at lower temperatures, which in turn allows more celestial bodies to be seen when they would not have been without the advanced infrared technologies.\n", "The effect of the mirror flaw on scientific observations depended on the particular observation—the core of the aberrated PSF was sharp enough to permit high-resolution observations of bright objects, and spectroscopy of point sources was only affected through a sensitivity loss. However, the loss of light to the large, out-of-focus halo severely reduced the usefulness of the telescope for faint objects or high-contrast imaging. This meant that nearly all of the cosmological programs were essentially impossible, since they required observation of exceptionally faint objects. NASA and the telescope became the butt of many jokes, and the project was popularly regarded as a white elephant. For instance, in the 1991 comedy \"\", Hubble was pictured with \"Lusitania\", the \"Hindenburg\", and the Edsel. Nonetheless, during the first three years of the Hubble mission, before the optical corrections, the telescope still carried out a large number of productive observations of less demanding targets. The error was well characterized and stable, enabling astronomers to partially compensate for the defective mirror by using sophisticated image processing techniques such as deconvolution.\n", "The absence of air makes outer space an ideal location for astronomy at all wavelengths of the electromagnetic spectrum. This is evidenced by the spectacular pictures sent back by the Hubble Space Telescope, allowing light from more than 13 billion years ago—almost to the time of the Big Bang—to be observed. However, not every location in space is ideal for a telescope. The interplanetary zodiacal dust emits a diffuse near-infrared radiation that can mask the emission of faint sources such as extrasolar planets. Moving an infrared telescope out past the dust increases its effectiveness. Likewise, a site like the Daedalus crater on the far side of the Moon could shield a radio telescope from the radio frequency interference that hampers Earth-based observations.\n", "Solar cells, integrated circuits, and sensors can be damaged by radiation. Geomagnetic storms occasionally damage electronic components on spacecraft. Miniaturization and digitization of electronics and logic circuits have made satellites more vulnerable to radiation, as the total electric charge in these circuits is now small enough so as to be comparable with the charge of incoming ions. Electronics on satellites must be hardened against radiation to operate reliably. The Hubble Space Telescope, among other satellites, often has its sensors turned off when passing through regions of intense radiation. A satellite shielded by 3 mm of aluminium in an elliptic orbit () passing the radiation belts will receive about 2,500 rem (25 Sv) per year (for comparison, a full-body dose of 5 Sv is deadly). Almost all radiation will be received while passing the inner belt.\n", "The first answer to this problem was speckle imaging, which allowed bright objects with simple morphology to be observed with diffraction-limited angular resolution. Later came NASA's Hubble Space Telescope, working outside the atmosphere and thus not having any seeing problems and allowing observations of faint targets for the first time (although with poorer resolution than speckle observations of bright sources from ground-based telescopes because of Hubble's smaller telescope diameter). The highest resolution visible and infrared images currently come from imaging optical interferometers such as the Navy Prototype Optical Interferometer or Cambridge Optical Aperture Synthesis Telescope, but those can only be used on very bright stars.\n", "Additionally, the dust responsible for the atmospheric pollution may be detected by infrared radiation if it exists in sufficient quantity, similar to the detection of debris discs around main sequence stars. Data from the Spitzer Space Telescope suggests that 1-3% of white dwarfs possess detectable circumstellar dust.\n" ]

[ "In July 1945, Captain Benjamin M. Bradin entered the \"Führerbunker\" and discovered an original carbon copy of the Göring Telegram marked with an 'F' in a group of Hitler's papers that in later years were given to Robert W. Rieke, a professor of history at the Citadel.\n", "During the Second World War, a captured German spy (Marius Goring) is executed at the Tower of London, without revealing the whereabouts of Professor Hansen, a refugee Swedish scientist in Britain. He is believed to be unwittingly passing information on the atomic bomb to Germany through the neutral Irish Free State. British intelligence attempts to locate him and break this link.\n", "Among the significant artifacts are Hitler's SA (Sturmabteilung) shirt; his first sketch for the Nazi flag; his reading glasses; Patton's battle helmet; Montgomery's beret; and copies of \"Mein Kampf\" that belonged to Hitler, President Roosevelt, and General Patton. There are also six different Enigma code machines, including the ten-rotor T-52, of which only five are extant; an American Sherman tank from the North African Campaign; a German Goliath tank used at Normandy; and one of the very few surviving landing craft (LCVP) from the Pacific in near-original condition.\n", "The , a Type IXB, was captured in 1941 by the Royal Navy, and its Enigma machine and documents were removed. was also captured by the British in October 1942; three sailors boarded her as she was sinking, and desperately threw all the code books out of the submarine so as to salvage them. Two of them, Able Seaman Colin Grazier and Lieutenant Francis Anthony Blair Fasson, continued to throw code books out of the ship as it went under water, and went down with it. Further code books were captured by raids on weather ships. was boarded by crew from the Canadian ship on 6 March 1944, and codes were taken from her, but by this time in the war, most of the information was known. The , a Type IXC, was captured by the United States Navy in June 1944. It is now a museum ship in Chicago at the Museum of Science and Industry.\n", "BULLET::::- 1941 – World War II: The German submarine \"U-110\" is captured by the Royal Navy. On board is the latest Enigma machine which Allied cryptographers later use to break coded German messages.\n", "The bomb was again searched for in 2001 and not found. A new group in 2004 headed by Derek Duke claimed to have found an underwater object which it thinks is the bomb, but the US Army Corp of Engineers discounted the claim, saying the radioactive traces detected by the group were \"naturally occurring\".\n", "Kaczynski left false clues in every bomb, which he made hard to find to make them believable. The first clue was a metal plate stamped with the initials FC hidden somewhere (usually in the pipe end cap) in every bomb. Another clue included a note left in a bomb that did not detonate; it read \"Wu—It works! I told you it would—RV\". Another clue was the Eugene O'Neill $1 stamps used to send his boxes. He sent one bomb embedded in a copy of Sloan Wilson's novel \"Ice Brothers.\" The FBI theorized that Kaczynski had a theme of nature, trees and wood in his crimes. He often included bits of tree branch and bark in his bombs, and targets selected included Percy \"Wood\" and Professor Leroy \"Wood\". Crime writer Robert Graysmith noted that his \"obsession with wood\" was \"a large factor.\"\n" ]

[ "In many applications (e.g., web browsers), holding down the control key while rolling the scroll wheel causes the text size to increase or decrease, or an image in an image-editing or map-viewing program to zoom in or out, if such a feature is available.\n", "Also, because the layout information may be stored externally to the HTML, it may be quite easy to add new content in a tableless design, whether modifying an existing page or adding a new page. By contrast, without such a design, the layout for each page may require a more time-consuming manual changing of each instance or use of global find-and-replace utilities. However site owners often want particular pages to be different from others on the site either for a short period or long term. This will often necessitate a separate style sheet to be developed for that page. The page (or template) content usually can remain unaltered however, which is not the case in a tables-based design.\n", "Standard Adaptive layout (screen-dependent multi-page) can also use viewport responsive scaling of the page in conjunction (as in responsive web design), but new responsive web design strategies and technology have all but made the need for separate multi-screen pages obsolete except where the site wishes to target users of non-smart internet-capable mobile devices and obsolete smartphones which do not respond to new responsive design scripts. As previously stated, things like Django's \"views\" concept and some aspects of AJAX blur the lines, as they serve different versions of pages, for many reasons, but some can be for fluidity on different devices, however, pages are generated dynamically, not statically (though one could argue that the \"views\" are static templates to be filled with content. In the end, it is all up to the developer how he or she feels is the most appropriate way to target the devices their content will be viewed on in the most fluid, clean and integrated way. There is certainly more than one way to skin the cat of dynamic web development.\n", "Because marquee text moves, links within it are more difficult to click than those in static text, depending on the speed and length of the scrolling. Users only get one chance every time it scrolls past. Also, scrolling text too fast can make it unreadable to some people, particularly those with visual impairments. This can easily frustrate users. To combat this, most client-side scripting allows marquees to be programmed to stop when the mouse is over them.\n", "If a page's layout information is stored externally, a user can decide to disable the layout information entirely, leaving the site's bare content still in a readable form. Site authors may also offer multiple style sheets, which can be used to completely change the appearance of the site without altering any of its content.\n", "In the early days of the Web, each individual web page was delivered to the client as a static document, but the sequence of pages could still provide an interactive experience, as user input was returned through web form elements embedded in the page markup. However, \"every\" significant change to the web page required a round trip back to the server to refresh the entire page.\n", "As of 23 March 2015, separate mobile and text only versions have been removed, and replaced with a \"responsive web design\", allowing the presentation of content to adjust automatically for a wide variety of screen sizes, from desktop computer to smartphones and tablet devices.\n" ]

[ "A large proportion of amputees (50–80%) experience the phenomenon of phantom limbs; they feel body parts that are no longer there. These limbs can itch, ache, burn, feel tense, dry or wet, locked in or trapped or they can feel as if they are moving. Some scientists believe it has to do with a kind of neural map that the brain has of the body, which sends information to the rest of the brain about limbs regardless of their existence. Phantom sensations and phantom pain may also occur after the removal of body parts other than the limbs, e.g. after amputation of the breast, extraction of a tooth (phantom tooth pain) or removal of an eye (phantom eye syndrome).\n", "Several scientists and scientific groups have expressed the belief that amphibians can feel pain, however, this remains somewhat controversial due to differences in brain structure and the nervous system compared with other vertebrates.\n", "A similar phenomenon is unexplained sensation in a body part unrelated to the amputated limb. It has been hypothesized that the portion of the brain responsible for processing stimulation from amputated limbs, being deprived of input, expands into the surrounding brain, (\"Phantoms in the Brain\": V.S. Ramachandran and Sandra Blakeslee) such that an individual who has had an arm amputated will experience unexplained pressure or movement on his face or head.\n", "People who have a limb amputated may still have a confused sense of that limb's existence on their body, known as phantom limb syndrome. Phantom sensations can occur as passive proprioceptive sensations of the limb's presence, or more active sensations such as perceived movement, pressure, pain, itching, or temperature. There are a variety of theories concerning the etiology of phantom limb sensations and experience. One is the concept of \"proprioceptive memory\", which argues that the brain retains a memory of specific limb positions and that after amputation there is a conflict between the visual system, which actually sees that the limb is missing, and the memory system which remembers the limb as a functioning part of the body. Phantom sensations and phantom pain may also occur after the removal of body parts other than the limbs, such as after amputation of the breast, extraction of a tooth (phantom tooth pain), or removal of an eye (phantom eye syndrome).\n", "In the phenomenon of phantom limb sensation, a person continues to feel pain or sensation within a part of their body that has been amputated. This is strangely common, occurring in 60–80% of amputees. An explanation for this is based on the concept of neuroplasticity, as the cortical maps of the removed limbs are believed to have become engaged with the area around them in the postcentral gyrus. This results in activity within the surrounding area of the cortex being misinterpreted by the area of the cortex formerly responsible for the amputated limb.\n", "When an arm or leg is amputated, patients often continue to feel vividly the presence of the missing limb as a \"phantom limb\" (an average of 80%). Building on earlier work by Ronald Melzack (McGill University) and Timothy Pons (NIMH), Ramachandran theorized that there was a link between the phenomenon of phantom limbs and neural plasticity in the adult human brain. To test this theory, Ramachandran recruited amputees, so that he could learn more about if phantom limbs could \"feel\" a stimulus to other parts of the body.\n", "People with amputations have reported phantom limbs. This serves as evidence that the brain is hard-wired to perceive body image, making it notable that sensory input and proprioceptive feedback are not essential in its formation. Losing an anatomical part through amputation sets a person up for complex perceptual, emotional, and psychological responses. Such responses include phantom limb pain, which is the painful feeling some amputees incur after amputation in the area lost. Phantom limb pain permits a natural acceptance and use of prosthetic limbs.\n" ]

[ "Modern electric toothbrushes run on low voltage, 12v or less. A few units use a step-down transformer to power the brush, but most use a battery, usually but not always rechargeable and non-replaceable, fitted inside the handle, which is hermetically sealed to prevent water damage. While early NiCd battery toothbrushes used metal tabs to connect with the charging base, some toothbrushes use inductive charging.\n", "Electric toothbrushes are toothbrushes with moving or vibrating bristle heads. The two main types of electric toothbrushes are the sonic type which has a vibrating head, and the oscillating-rotating type in which the bristle head makes constant clockwise and anti-clockwise movements.\n", "An electric toothbrush is a toothbrush that makes rapid automatic bristle motions, either back-and-forth oscillation or rotation-oscillation (where the brush head alternates clockwise and counterclockwise rotation), in order to clean teeth. Motions at sonic speeds or below are made by a motor. In the case of ultrasonic toothbrushes, ultrasonic motions are produced by a piezoelectric crystal. A modern electric toothbrush is usually powered by a rechargeable battery charged through inductive charging when the brush sits in the charging base between uses.\n", "The different brush types make contact with the commutator in different ways. Because copper brushes have the same hardness as the commutator segments, the rotor cannot be spun backwards against the ends of copper brushes without the copper digging into the segments and causing severe damage. Consequently, strip/laminate copper brushes only make tangential contact with the commutator, while copper mesh and wire brushes use an inclined contact angle touching their edge across the segments of a commutator that can spin in only one direction.\n", "The brush head vibrates at hundreds of times per second, with the latest models at 31,000 strokes per minute or 62,000 movements per minute (517 Hz). Rather than connecting to its charger with conductors, it uses inductive charging—the charger includes the primary winding of the voltage-reducing transformer and the fat handle of the brush includes the secondary winding. The replaceable head is also driven magnetically.\n", "The wire brush is primarily an abrasive implement, used for cleaning rust and removing paint. It is also used to clean surfaces and to create a better conductive area for attaching electrical connections, such as those between car battery posts and their connectors, should they accumulate a build-up of grime and dirt. When cleaning stainless steel, it is advisable to use a stainless steel bristle wire brush, as a plain carbon steel brush can contaminate the stainless steel and cause rust spots to appear. Brass bristle brushes are used on softer surfaces or when it is necessary to clean a harder surface without marring it. Brass bristle brushes are also used in potentially flammable environments where non-sparking tools are required. Wire brushes are also used to clean the teeth of large animals, such as crocodiles and pigs. They are also used widely in surface engineering to clean the castings to paint the castings.\n", "Using electric tooth brushes is less complex in regards to brushing technique, making it a viable option for children, and adults with limited dexterity. The bristle head should be guided from tooth to tooth slowly, following the contour of the gums and crowns of the tooth. The motion of the toothbrush head removes the need to manually oscillate the brush or make circles.\n" ]

[ "Therapists who subscribe to recovered memory theory point to a wide variety of common problems, ranging from eating disorders to sleeplessness, as evidence of repressed memories of sexual abuse. Psychotherapists tried to reveal “repressed memories” in mental therapy patients through “hypnosis, guided imagery, dream interpretation and narco-analysis”. The reasoning was that if abuse couldn’t be remembered, then it needed to be recovered by the therapist. The legal phenomena developed in the 1980s, with civil suits alleging child sexual abuse on the basis of “memories” recovered during psychotherapy. The term “repressed memory therapy” gained momentum and with it social stigma surrounded those accused of abuse. The “therapy” led to other psychological disorders in persons whose memories were recovered.\n", "Therapy-induced memory recovery has made frequent appearances in legal cases, particularly those regarding sexual abuse. Therapists can often aid in creating a false memory in a victim's mind, intentionally or unintentionally. They will associate a patient's behavior with the fact that they have been a victim of sexual abuse, thus helping the memory occur. They use memory enhancement techniques such as hypnosis dream analysis to extract memories of sexual abuse from victims. According to the FMSF (False Memory Syndrome Foundation), these memories are false and are produced in the very act of searching for and employing them in a life narrative. In \"Ramona v. Isabella\", two therapists wrongly prompted a recall that their patient, Holly Ramona, had been sexually abused by her father. It was suggested that the therapist, Isabella, had implanted the memory in Ramona after use of the hypnotic drug sodium amytal. After a nearly unanimous decision, Isabella had been declared negligent towards Holly Ramona. This 1994 legal issue played a massive role in shedding light on the possibility of false memories' occurrences.\n", "The founders of the FMS Foundation had been concerned that alleged recovered memories were being reported after the use of controversial therapy techniques that including hypnosis, relaxation exercises, guided imagery, drug-mediated interviews, body memories, literal dream interpretation and journaling. It is the position of the FMSF that there is no scientific evidence that the use of consciousness-altering techniques such as these can reveal or accurately elaborate factual information about previously forgotten past experiences, including sexual abuse.\n", "It has been suggested that inducing selective amnesia for particular events or stimuli in patients may be an effective tool in psychotherapy. Alexander (1953) found that administering electroconvulsive therapy (ECT) to patients suffering from a traumatic life event induces selective amnesia for the traumatic event without effecting the patient’s surrounding memories. This finding, as well as other similar findings, has been used to form a hypothesis concerning the mechanisms underlying ECT. This hypothesis states that the most decisive effect of ECT is the arousal of the active defensive operations in the brain. They further hypothesize that the arousal of these operations makes ECT an effective treatment for depression and other psychotic disorders in which the brain’s defensive operations are ineffective. This hypothesis would also explain why ECT is an ineffective treatment for disorders in which the defensive operations are overactive such as anxiety disorders. Thus, selective amnesia, if utilized under the correct circumstances, may be useful in a therapeutic setting.\n", "A 2010 article in \"Ynet\" quoted Dr. Alex Aviv, Chairman of the Advisory Committee on the Law of Hypnosis to the Israeli Ministry of Health as saying (in reference to Scientology) \"they restore early memories, usually of traumas, when in some cases this is a false memory. When a patient 'remembers' a false event like that via a hypnotic process - the event can become real for him\".\n", "This state of trance is widely used as a means to recall suppressed or repressed memories. During the sessions of hypnosis, a great deal of spontaneous recovery can occur because the conscious thoughts are slowed down to allow much higher retrieval. Some memories can seem foreign to the patient because they have never been recalled before; this is usual proof that the therapy is working.\n", "A 2015 article in the peer-reviewed APA journal \"Psychology of Consciousness\" suggested that primal therapy, as well as some other therapies, may have produced false memories, specifically those within the period of infantile amnesia in early infancy, and in memories for birth.\n" ]

[ "The formula was discovered independently by Leonhard Euler and Colin Maclaurin around 1735. Euler needed it to compute slowly converging infinite series while Maclaurin used it to calculate integrals. It was later generalized to Darboux's formula.\n", "Mathematical analysis formally developed in the 17th century during the Scientific Revolution, but many of its ideas can be traced back to earlier mathematicians. Early results in analysis were implicitly present in the early days of ancient Greek mathematics. For instance, an infinite geometric sum is implicit in Zeno's paradox of the dichotomy. Later, Greek mathematicians such as Eudoxus and Archimedes made more explicit, but informal, use of the concepts of limits and convergence when they used the method of exhaustion to compute the area and volume of regions and solids. The explicit use of infinitesimals appears in Archimedes' \"The Method of Mechanical Theorems\", a work rediscovered in the 20th century. In Asia, the Chinese mathematician Liu Hui used the method of exhaustion in the 3rd century AD to find the area of a circle. Zu Chongzhi established a method that would later be called Cavalieri's principle to find the volume of a sphere in the 5th century. The Indian mathematician Bhāskara II gave examples of the derivative and used what is now known as Rolle's theorem in the 12th century.\n", "Bhaskara I had not indicated any method by which he arrived at his formula. Historians have speculated on various possibilities. No definitive answers have as yet been obtained. Beyond its historical importance of being a prime example of the mathematical achievements of ancient Indian astronomers, the formula is of significance from a modern perspective also. Mathematicians have attempted to derive the rule using modern concepts and tools. Around half a dozen methods have been suggested, each based on a separate set of premises. Most of these derivations use only elementary concepts.\n", "In 370 BC, Plato's Parmenides may have contained an early example of an implicit inductive proof. The earliest implicit traces of mathematical induction may be found in Euclid's proof that the number of primes is infinite and in Bhaskara's \"cyclic method\". An opposite iterated technique, counting \"down\" rather than up, is found in the Sorites paradox, where it was argued that if 1,000,000 grains of sand formed a heap, and removing one grain from a heap left it a heap, then a single grain of sand (or even no grains) forms a heap.\n", "Mathematicians have always practised experimental mathematics. Existing records of early mathematics, such as Babylonian mathematics, typically consist of lists of numerical examples illustrating algebraic identities. However, modern mathematics, beginning in the 17th century, developed a tradition of publishing results in a final, formal and abstract presentation. The numerical examples that may have led a mathematician to originally formulate a general theorem were not published, and were generally forgotten.\n", "Methods to calculate the sum of the first positive integers, the sum of the squares and of the cubes of the first positive integers were known, but there were no real 'formulas', only descriptions given entirely in words. Among the great mathematicians of antiquity to consider this problem were Pythagoras (c. 572–497 BCE, Greece), Archimedes (287–212 BCE, Italy), Aryabhata (b. 476, India), Abu Bakr al-Karaji (d. 1019, Persia) and Abu Ali al-Hasan ibn al-Hasan ibn al-Haytham (965–1039, Iraq).\n", "The Greek mathematician Menaechmus solved problems and proved theorems by using a method that had a strong resemblance to the use of coordinates and it has sometimes been maintained that he had introduced analytic geometry.\n" ]

[ "Self-awareness is the capacity for introspection and the ability to recognize oneself as an individual separate from the environment and other individuals. It is not to be confused with consciousness in the sense of qualia. While consciousness is being aware of one's environment and body and lifestyle, self-awareness is the recognition of that awareness. Self-awareness is how an individual consciously knows and understands their own character, feelings, motives, and desires. There are two broad categories of self-awareness: internal self-awareness and external self-awareness.\n", "Self-awareness is seen, by some, to be a sign of highly developed, abstract thinking. Self-awareness, though not well-defined scientifically, is believed to be the precursor to more advanced processes like meta-cognitive reasoning (thinking about thinking) that are typical of humans. Research in this field has suggested that cetaceans, among others, possess self-awareness.\n", "Self-awareness is seen, by some, to be a sign of highly developed, abstract thinking. Self-awareness, though not well-defined scientifically, is believed to be the precursor to more advanced processes like meta-cognitive reasoning (thinking about thinking) that are typical of humans. Research in this field has suggested that cetaceans, among others, possess self-awareness.\n", "Self-knowledge is linked to the cognitive self in that its motives guide our search to gain greater clarity and assurance that our own self-concept is an accurate representation of our \"true self\"; for this reason the cognitive self is also referred to as the \"known self\". The cognitive self is made up of everything we know (or \"think we know\" about ourselves). This implies physiological properties such as hair color, race, and height etc.; and psychological properties like beliefs, values, and dislikes to name but a few.\n", "\"Self-awareness\" refers to an individual's ability to become aware of their own subconscious thinking. Absence of self-awareness is frequently seen in eating disorder patients, causing them to react to situations, feelings and other stimuli emotionally rather than rationally.\n", "Aside from being aware of our physical selves, awareness requires an awareness of our mind. He suggests that we notice and acknowledge our thoughts but not allow them to influence us in any way. We should recognize our feelings, thoughts and ideas, but never judge them because they are us.\n", "Self-knowledge is a component of the self or, more accurately, the self-concept. It is the knowledge of oneself and one's properties and the \"desire\" to seek such knowledge that guide the development of the self-concept. Self-knowledge informs us of our mental representations of ourselves, which contain attributes that we uniquely pair with ourselves, and theories on whether these attributes are stable or dynamic.\n" ]

[ "\"Guitar Hero II\" is the centerpiece of an episode of \"South Park\" titled \"Guitar Queer-O\", in which Stan and Kyle overindulge in \"Guitar Hero II\" and become treated as though they were real-life rock stars. The episode was first broadcast on November 7, 2007, ten days after the American release of \"Guitar Hero III: Legends of Rock\". \"Metalocalypse\" (created by Titmouse Studio, who also provided cutscene animations within the \"Guitar Hero\" game) has made reference to \"Guitar Hero\"; in one example, the episode \"Dethkids,\" a sick child composes a song for Dethklok rhythm guitarist Toki Wartooth using a \"Guitar Hero\" controller. Ellen DeGeneres has played \"Guitar Hero\" several times in 2008 during the monologue of her syndicated talk show. In the January 25, 2008, episode she is seen playing along to \"Barracuda\", which segues to Heart performing the song for the audience. During the season 7 finale of \"American Idol\", finalists David Cook and David Archuleta appeared in separate commercials for the games, where they each parodied Tom Cruise dancing to \"Old Time Rock and Roll\" in the movie \"Risky Business\". This parody has been used by director Brett Ratner to create advertisements for \"Guitar Hero World Tour\", featuring celebrities such as Kobe Bryant, Tony Hawk, Alex Rodriguez, Michael Phelps, Corbin Bleu, Heidi Klum, and Marisa Miller.\n", "At this point, the band started writing original songs, including \"Grave Robbers\" (later renamed \"Raise The Dead\"), \"Overkill\", and \"Unleash the Beast (Within)\". More songs followed, including \"Death Rider\" (1981) and \"Rotten To The Core\" (1982). In 1983 Rich left and Bobby Gustafson remained as the sole guitarist. The band became a staple at New York and New Jersey clubs, such as L'Amours, and Verni gave Ellsworth the nickname \"Blitz\" due to his over-the-top lifestyle. Verni has been the sole songwriter for the music of Overkill since \"Horrorscope\".\n", "\"Guitar Hero: Metallica\" received positive reviews, with critics stating it to be a strong tribute to the band and Neversoft's best work on the \"Guitar Hero\" series to date. The difficulty throughout the game was praised, found to be more enjoyable to players of all skill levels than the more-difficult \"\". Reviewers noted the lack of additional downloadable content, save for the pre-existing \"Death Magnetic\" songs, the cartoonish storyline for the Career mode, and the overall value of the game as some of the negatives to the experience.\n", "Grunge guitarists \"flatly rejected\" the virtuoso \"shredding\" guitar solos that had become the centerpiece of heavy metal songs, instead opting for melodic, blues-inspired solos – focusing \"on the song, not the guitar solo\". Jerry Cantrell of Alice in Chains stated that solos should be to serve the song, rather than to show off a guitarist's technical skill. In place of the strutting guitar heroes of metal, grunge had \"guitar anti-heroes\" like Cobain, who showed little interest in mastering the instrument.\n", "The \"Guitar Hero\" video game series included several of Metallica's songs. \"One\" was used in \"Guitar Hero III\". The album \"Death Magnetic\" was later released as purchasable, downloadable content for the game. \"Trapped Under Ice\" was featured in the sequel, \"Guitar Hero World Tour\". In 2009, Metallica collaborated with the game's developers to make \"\", which included a number of Metallica's songs. Harmonix' video game series \"Rock Band\" included \"Enter Sandman\" and \"Battery\"; \"Ride the Lightning\", \"Blackened\", and \"...And Justice for All\" were released as downloadable tracks. In 2013, due to expiring content licenses, \"Ride the Lightning\", \"Blackened\", and \"...And Justice for All\" are no longer available for download.\n", "The \"Guitar Hero\" series has made a significant cultural impact, becoming a \"cultural phenomenon\". The series has helped to rekindle music education in children, influenced changes in both the video game and music industry, has found use in health and treatment of recovering patients, and has become part of the popular culture vernacular. Several journalists, including 1UP.com, \"Wired\", G4TV, the \"San Jose Mercury News\", \"Inc.\", \"The Guardian\", and \"Advertising Age\", considered \"Guitar Hero\" to be one of the most influential products of the first decade of the 21st century, attributing it as the spark leading to the growth of the rhythm game market, for boosting music sales for both new and old artists, for introducing more social gaming concepts to the video game market, and, in conjunction with the Wii, for improving interactivity with gaming consoles.\n", "\"Guitar Hero: Metallica\" features 49 songs based on master recordings, 28 by Metallica, and the other 21 songs by bands that are \"their personal favorites and influences from over the years\", including those that appeared on their \"Garage Inc.\" album. All of the Metallica songs in the game are from original masters, though locating some masters proved troublesome. Though Metallica were prepared to re-record songs as Aerosmith had done for \"\", they were able to find the masters for their debut album \"Kill 'Em All\" in the basement of their former manager Johny Zazula. While other downloadable content from \"Guitar Hero III\" or \"Guitar Hero World Tour\" is not usable in \"Guitar Hero: Metallica\", the game will detect and incorporate the songs from the \"Death Magnetic\" downloadable content into the game's setlist (however, the song \"All Nightmare Long\" is available in the game as part of its main setlist). The PlayStation 2 and Wii versions of the game do not support downloadable content, but include \"Broken, Beat & Scarred\", \"Cyanide\" and \"My Apocalypse\" from \"Death Magnetic\" in addition to the game's existing tracks. The 1998 medley of covers of the band Mercyful Fate's songs \"Mercyful Fate\" is the longest track included in the game, running at around 11 minutes.\n" ]

[ "The popular view is that the fall of the Western Roman Empire caused a \"dark age\" in western Europe in which \"knowledge and civility\", the \"arts of elegance,\" and \"many of the useful arts\" were neglected or lost. Conversely, however, the lot of the farmers who made up 80 percent or more of the total population, may have improved in the aftermath of the Roman Empire. The fall of Rome saw the \"shrinking of tax burdens, weakening of the aristocracy, and consequently greater freedom for peasants.\" The countryside of the Roman Empire was dotted with \"villas\" or estates, characterized by Pliny the Elder as \"the ruin of Italy.\" The estates were owned by wealthy aristocrats and worked in part by slaves. More than 1,500 villas are known to have existed in England alone. With the fall of Rome, the villas were abandoned or transformed into utilitarian rather than elite uses. \"In western Europe, then, we seem to see the effect of a release from the pressure of the Roman imperial market, army and taxation, and a return to farming based more on local needs.\"\n", "The belief has been traced back to Edward Gibbon's work, \"The History of the Decline and Fall of the Roman Empire\", published between 1776 and 1788, where Gibbon argues that Rome collapsed due to the gradual loss of civic virtue among its citizens, who became lazy, spoiled and inclined to hire foreign mercenaries to handle the defence of state. He believed that that reason must triumph over superstition to save Europe's superpowers from a similar fate to the Roman Empire.\n", "After some 1200 years of independence and nearly 700 years as a great power, the rule of Rome in the West ended. Various reasons for Rome's fall have been proposed ever since, including loss of Republicanism, moral decay, military tyranny, class war, slavery, economic stagnation, environmental change, disease, the decline of the Roman race, as well as the inevitable ebb and flow that all civilizations experience. At the time many pagans argued that Christianity and the decline of traditional Roman religion were responsible; some rationalist thinkers of the modern era attribute the fall to a change from a martial to a more pacifist religion that lessened the number of available soldiers; while Christians such as Augustine of Hippo argued that the sinful nature of Roman society itself was to blame.\n", "Bryan Ward-Perkins's \"The Fall of Rome and the End of Civilization\" (2005) takes a traditional view tempered by modern discoveries, arguing that the empire's demise was caused by a vicious circle of political instability, foreign invasion, and reduced tax revenue. Essentially, invasions caused long-term damage to the provincial tax base, which lessened the Empire's medium- to long-term ability to pay and equip the legions, with predictable results. Likewise, constant invasions encouraged provincial rebellion as self-help, further depleting Imperial resources. Contrary to the trend among some historians of the \"there was no fall\" school, who view the fall of Rome as not necessarily a \"bad thing\" for the people involved, Ward-Perkins argues that in many parts of the former Empire the archaeological record indicates that the collapse was truly a disaster.\n", "Cullen Murphy in his book, \"Are We Rome? The Fall of an Empire and the Fate of America\", Tells of American Expansionists and their desire to bring America, primarily American culture, to the rest of the world, starting with Europe.\n", "BULLET::::- Peter Heather argues in his book \"The Fall of the Roman Empire: a New History of Rome and the Barbarians\" that this civilization did not end for moral or economic reasons, but because centuries of contact with barbarians across the frontier generated its own nemesis by making them a much more sophisticated and dangerous adversary. The fact that Rome needed to generate ever greater revenues to equip and re-equip armies that were for the first time repeatedly defeated in the field, led to the dismemberment of the Empire. Although this argument is specific to Rome, it can also be applied to the Asiatic Empire of the Egyptians, to the Han and Tang dynasties of China, to the Muslim Abbasid Caliphate and others.\n", "In 1995, an established journal of classical scholarship, \"Classics Ireland\", published punk musician's Iggy Pop's reflections on the applicability of \"The Decline and Fall of the Roman Empire\" to the modern world in a short article, \"Caesar Lives\", (vol. 2, 1995) in which he notedAmerica is Rome. Of course, why shouldn't it be? We are all Roman children, for better or worse ... I learn much about the way our society really works, because the system-origins – military, religious, political, colonial, agricultural, financial – are all there to be scrutinised in their infancy. I have gained perspective.\n" ]

[ "The expression \"riding shotgun\" is derived from \"shotgun messenger\", a colloquial term for \"express messenger\", when stagecoach travel was popular during the American Wild West and the Colonial period in Australia. The person rode alongside the driver. The first known use of the phrase \"riding shotgun\" was in the 1905 novel \"The Sunset Trail\" by Alfred Henry Lewis. \n", "It is because of this gun and its usage that the term \"Riding shotgun\" came to be. Typically, a cut-down shotgun would be carried by the messenger sitting next to the stagecoach driver, ready to use the gun to ward off bandits. Today, in American and Canadian English, the term \"Riding shotgun\" refers to the person sitting in the front passenger seat of an automobile.\n", "Like \"gunslinger\", the actual term \"riding shotgun\" first appeared in fiction about the Old West, dating back as far as the 1905 book \"The Sunset Trail\", by Alfred Henry Lewis. See also \"calling shotgun\" which dates from use in autos to about 1954, at a time it was being used in the popular TV series \"Gunsmoke\".\n", "Since the 1960s, the term has evolved, describing cars combining elements of both station wagon and coupé body styles, both with or without reference to the historical usage for shooting parties. During the 1960s and early 1970s, several high end European manufacturers produced two-door shooting brake versions of their sports cars.\n", "Riding shotgun was used to describe the guard who rode alongside a stagecoach driver, ready to use his shotgun to ward off bandits or hostile Native Americans. In modern use, it refers to the practice of sitting alongside the driver in a moving vehicle. The phrase has been used to mean giving actual or figurative support or aid to someone in a situation. The coining of this phrase dates to 1905 at latest.\n", "The term \"shotgun house,\" is often said to come from the saying that one could fire a shotgun through the front door and the pellets would fly cleanly through the house and out the back door. However, the name's origin may actually reflect an African architectural heritage, perhaps being a corruption of a term such as \"to-gun\", which means \"place of assembly\" in the Southern Dohomey Fon area.\n", "\"Kübelwagen\" is a contraction of \"Kübelsitzwagen\", meaning 'bucket-seat car' because all German light military vehicles that had no doors were fitted with bucket seats to prevent passengers from falling out. This body style had first been developed by in 1923. The first Porsche Type 62 test vehicles had no doors and were therefore fitted with bucket seats as \"Kübelsitzwagen\", that was later shortened to \"Kübelwagen\". Mercedes, Opel and Tatra also built \"Kübelsitzwagen\".\n" ]

[ "Humans inhabit hot climates, both dry and humid, and have done so for thousands of years. Selective use of clothing and technological inventions such as air conditioning allows humans to thrive in hot climates.\n", "As in other mammals, thermoregulation in humans is an important aspect of homeostasis. In thermoregulation, body heat is generated mostly in the deep organs, especially the liver, brain, and heart, and in contraction of skeletal muscles. Humans have been able to adapt to a great diversity of climates, including hot humid and hot arid. High temperatures pose serious stress for the human body, placing it in great danger of injury or even death. For humans, adaptation to varying climatic conditions includes both physiological mechanisms resulting from evolution and behavioural mechanisms resulting from conscious cultural adaptations.\n", "Humans are sensitive to humid air because the human body uses evaporative cooling as the primary mechanism to regulate temperature. Under humid conditions, the \"rate\" at which perspiration evaporates on the skin is lower than it would be under arid conditions. Because humans perceive the rate of heat transfer from the body rather than temperature itself, we feel warmer when the relative humidity is high than when it is low.\n", "In general, humans appear physiologically well adapted to hot dry conditions. However, effective thermoregulation is reduced in hot, humid environments such as the Red Sea and Persian Gulf (where moderately hot summer temperatures are accompanied by unusually high vapor pressures), tropical environments, and deep mines where the atmosphere can be water-saturated. In hot-humid conditions, clothing can impede efficient evaporation. In such environments, it helps to wear light clothing such as cotton, that is pervious to sweat but impervious to radiant heat from the sun. This minimizes the gaining of radiant heat, while allowing as much evaporation to occur as the environment will allow. Clothing such as plastic fabrics that are impermeable to sweat and thus do not facilitate heat loss through evaporation can actually contribute to heat stress.\n", "As in other mammals, thermoregulation is an important aspect of human homeostasis. Most body heat is generated in the deep organs, especially the liver, brain, and heart, and in contraction of skeletal muscles. Humans have been able to adapt to a great diversity of climates, including hot humid and hot arid. High temperatures pose serious stresses for the human body, placing it in great danger of injury or even death. For example, one of the most common reactions to hot temperatures is heat exhaustion, which is an illness that could happen if one is exposed to high temperatures, resulting in some symptoms such as dizziness, fainting, or a rapid heartbeat. For humans, adaptation to varying climatic conditions includes both physiological mechanisms resulting from evolution and behavioural mechanisms resulting from conscious cultural adaptations. The physiological control of the body’s core temperature takes place primarily through the hypothalamus, which assumes the role as the body’s “thermostat.” This organ possesses control mechanisms as well as key temperature sensors, which are connected to nerve cells called thermoreceptors. Thermoreceptors come in two subcategories; ones that respond to cold temperatures and ones that respond to warm temperatures. Scattered throughout the body in both peripheral and central nervous systems, these nerve cells are sensitive to changes in temperature and are able to provide useful information to the hypothalamus through the process of negative feedback, thus maintaining a constant core temperature.\n", "Cold and heat adaptations in humans are a part of the broad adaptability of \"Homo sapiens\". Adaptations in humans can be physiological, genetic, or cultural, which allow people to live in a wide variety of climates. There has been a great deal of research done on developmental adjustment, acclimatization, and cultural practices, but less research on genetic adaptations to cold and heat temperatures.\n", "Although homeothermy lends advantages such as increased activity levels, small mammals and birds maintaining an internal body temperature spend up to 100 times more energy in low ambient temperatures compared to ectotherms. To cope with this challenge, these animals maintain a much lower body temperature, staying just over ambient temperature rather than at normal operating temperature. This reduction in body temperature and metabolic rate allows the prolonged survival of animals capable of entering torpid states.\n" ]

[ "At the end of the 19th century, light was thought to consist of waves of electromagnetic fields which propagated according to Maxwell's equations, while matter was thought to consist of localized particles (See History of wave and particle duality). In 1900, this division was exposed to doubt, when, investigating the theory of black-body radiation, Max Planck proposed that light is emitted in discrete quanta of energy. It was thoroughly challenged in 1905. Extending Planck's investigation in several ways, including its connection with the photoelectric effect, Albert Einstein proposed that light is also propagated and absorbed in quanta. Light quanta are now called photons. These quanta would have an energy given by the Planck–Einstein relation:\n", "These effects also occur when a light wave travels through a medium with a varying refractive index, or when a sound wave travels through a medium with varying acoustic impedance – all waves diffract, including gravitational waves, water waves, and other electromagnetic waves such as X-rays and radio waves. Furthermore, quantum mechanics also demonstrates that matter possesses wave-like properties, and hence, undergoes diffraction (which is measurable at subatomic to molecular levels).\n", "In classical electrodynamics, light is considered as an electromagnetic wave, which is described by Maxwell's equations. Light waves incident on a material induce small oscillations of polarisation in the individual atoms (or oscillation of electrons, in metals), causing each particle to radiate a small secondary wave in all directions, like a dipole antenna. All these waves add up to give specular reflection and refraction, according to the Huygens–Fresnel principle.\n", "Since light is an oscillation it is not affected by traveling through static electric or magnetic fields in a linear medium such as a vacuum. However, in nonlinear media, such as some crystals, interactions can occur between light and static electric and magnetic fields — these interactions include the Faraday effect and the Kerr effect.\n", "Light propagating in a vacuum has its energy and momentum quantized according to an integer number of particles known as photons. Quantum optics studies the nature and effects of light as quantized photons. The first major development leading to that understanding was the correct modeling of the blackbody radiation spectrum by Max Planck in 1899 under the hypothesis of light being emitted in discrete units of energy. The photoelectric effect was further evidence of this quantization as explained by Einstein in a 1905 paper, a discovery for which he was to be awarded the Nobel Prize in 1921. Niels Bohr showed that the hypothesis of optical radiation being quantized corresponded to his theory of the quantized energy levels of atoms, and the spectrum of discharge emission from hydrogen in particular. The understanding of the interaction between light and matter following these developments was crucial for the development of quantum mechanics as a whole. However, the subfields of quantum mechanics dealing with matter-light interaction were principally regarded as research into matter rather than into light; hence one rather spoke of atom physics and quantum electronics in 1960. Laser science—i.e., research into principles, design and application of these devices—became an important field, and the quantum mechanics underlying the laser's principles was studied now with more emphasis on the properties of light, and the name \"quantum optics\" became customary.\n", "Conversely all normal matter absorbs electromagnetic radiation to some degree. An object that absorbs all radiation falling on it, at all wavelengths, is called a black body. When a black body is at a uniform temperature, its emission has a characteristic frequency distribution that depends on the temperature. Its emission is called black-body radiation.\n", "Light behaves in some aspects like particles and in other aspects like waves. Matter—the \"stuff\" of the universe consisting of particles such as electrons and atoms—exhibits wavelike behavior too. Some light sources, such as neon lights, give off only certain frequencies of light. Quantum mechanics shows that light, along with all other forms of electromagnetic radiation, comes in discrete units, called photons, and predicts its energies, colors, and spectral intensities. A single photon is a \"quantum\", or smallest observable amount, of the electromagnetic field because a partial photon has never been observed. More broadly, quantum mechanics shows that many quantities, such as angular momentum, that appeared continuous in the zoomed-out view of classical mechanics, turn out to be (at the small, zoomed-in scale of quantum mechanics) \"quantized\". Angular momentum is required to take on one of a set of discrete allowable values, and since the gap between these values is so minute, the discontinuity is only apparent at the atomic level.\n" ]

[ "Developments in technology and medicine mean that doctors and scientists can examine our brains in more ways and more detail than ever before, all without having to open up the body. In this issue, we explore how imaging research has changed the way we can look inside the human brain.\n", "It has become possible to study the living brain, and researchers can now watch the brain's decision-making process at work. A seminal experiment in this field was conducted by Benjamin Libet in the 1980s, in which he asked each subject to choose a random moment to flick their wrist while he measured the associated activity in their brain; in particular, the build-up of electrical signal called the readiness potential (after German Bereitschaftspotential, which was discovered by Kornhuber & Deecke in 1965.) Although it was well known that the readiness potential reliably preceded the physical action, Libet asked whether it could be recorded before the conscious intention to move. To determine when subjects felt the intention to move, he asked them to watch the second hand of a clock. After making a movement, the volunteer reported the time on the clock when they first felt the conscious intention to move; this became known as Libet's W time.\n", "He has released a book titled \"The Brain from Inside Out\" in 2019, which proposes a new framework of thinking of the brain as an explorer constantly controlling the body to test hypotheses and not as an information absorbing coding device.\n", "Motahhari also believed that there were great challenges between scientists for knowing the human as a phenomenon and at the same time we can rarely find two philosophers who have common ideas in their approach toward studying humanity.\n", "As it has become possible to study the living human brain, researchers have begun to watch decision-making processes at work. Studies have revealed unexpected things about human agency, moral responsibility, and consciousness in general. One of the pioneering studies in this domain was conducted by Benjamin Libet and colleagues in 1983 and has been the foundation of many studies in the years since. Other studies have attempted to predict participant actions before they make them, explore how we know we are responsible for voluntary movements as opposed to being moved by an external force, or how the role of consciousness in decision making may differ depending on the type of decision being made.\n", "Currently, modern science can image nearly all aspects of the brain as well as control a degree of the function of the brain. It can help control depression, over-activation, sleep deprivation, and many other conditions. Therapeutically it can help improve stroke victims' motor coordination, improve brain function, reduce epileptic episodes (see epilepsy), improve patients with degenerative motor diseases (Parkinson's disease, Huntington's disease, ALS), and can even help alleviate phantom pain perception. Advances in the field promise many new enhancements and rehabilitation methods for patients suffering from neurological problems. The neurotechnology revolution has given rise to the Decade of the Mind initiative, which was started in 2007. It also offers the possibility of revealing the mechanisms by which mind and consciousness emerge from the brain.\n", "A central tenet of cognitive science is that a complete understanding of the mind/brain cannot be attained by studying only a single level. An example would be the problem of remembering a phone number and recalling it later. One approach to understanding this process would be to study behavior through direct observation, or naturalistic observation. A person could be presented with a phone number and be asked to recall it after some delay of time; then the accuracy of the response could be measured. Another approach to measure cognitive ability would be to study the firings of individual neurons while a person is trying to remember the phone number. Neither of these experiments on its own would fully explain how the process of remembering a phone number works. Even if the technology to map out every neuron in the brain in real-time were available and it were known when each neuron fired it would still be impossible to know how a particular firing of neurons translates into the observed behavior. Thus an understanding of how these two levels relate to each other is imperative. \"The Embodied Mind: Cognitive Science and Human Experience\" says “the new sciences of the mind need to enlarge their horizon to encompass, both, lived human experience and the possibilities for transformation inherent in human experience.” This can be provided by a functional level account of the process. Studying a particular phenomenon from multiple levels creates a better understanding of the processes that occur in the brain to give rise to a particular behavior.\n" ]

[ "Brown's dissenting opinion in \"Omar v. Harvey\" sets forth her judicial outlook on the constitutional balance of powers. The United States Court of Appeals for the D.C. Circuit upheld an injunction that forbade the U.S. military to transfer Omar, a suspected insurgent, out of U.S. custody while his \"habeas corpus\" suit was pending. Brown's dissent took the view that the majority was trespassing on the Executive Branch's authority:\n", "In their court papers on September 14, 2012 government lawyers said the plaintiffs had no basis to fear being locked up for their activities, and that the judge's order interfered with the president's powers at a time of war. Government attorneys argue that the executive branch is entitled to latitude when it comes to cases of national security and that the law is neither too broad nor overly vague. Judge Forrest's opinion is \"unprecedented, and the government has compelling arguments that it should be reversed,\" prosecutors said. They called the permanent injunction an \"extraordinary injunction of worldwide scope\". Lawyers for the Obama administration also argued that the United States will be irreparably harmed if it has to abide by a judge's ruling that it can no longer hold terrorism suspects indefinitely without trial in military custody. The government said that the injunction was an \"unprecedented\" trespass on power of the president and the legislature that by its very nature was doing irreparable harm. They also argued that the injunction places an undue burden on military commanders in a time of war while the plaintiffs had no reasonable fear of ever being detained \"in the foreseeable future\".\n", "Jefferson pardoned several of those imprisoned under the Alien and Sedition Acts. Congressional Republicans repealed the Judiciary Act of 1801, which removed nearly all of Adams's \"midnight judges\" from office. A subsequent appointment battle led to the Supreme Court's landmark decision in \"Marbury v. Madison\", asserting judicial review over executive branch actions. Jefferson appointed three Supreme Court justices: William Johnson (1804), Henry Brockholst Livingston (1807), and Thomas Todd (1807).\n", "In 2012, after the Obama Administration signed the National Defense Authorization Act, or NDAA, Hedges sued members of the U.S. government, asserting that section 1021 of the law unconstitutionally allowed presidential authority for indefinite detention without \"habeas corpus\". He was later joined in the suit, \"Hedges v. Obama\", by activists including Noam Chomsky and Daniel Ellsberg. In May 2012 Judge Katherine B. Forrest of the Southern District of New York ruled that the counter-terrorism provision of the NDAA is unconstitutional. The Obama administration appealed the decision and it was overturned. Hedges petitioned the U.S. Supreme Court to hear the case, but the Supreme Court denied certiorari in April 2014.\n", "President Barack Obama issued executive orders following his inauguration. He ordered the Guantanamo commissions to be suspended, while his own team could assess whether they should be preserved, modified, or closed. James Pohl, another Presiding Officer, took the position that the President didn't have the authority to order him to suspend the commissions. But Parrish complied.\n", "The Supreme Court gives advice to the President in cases concerning the right to grant a pardon, and to the Ministry of Justice in cases concerning extradition. It may provide legal opinions on Government Bills at different stages of the legislative process, and the President may consult it on Bills passed by Parliament before ratifying them. The Supreme Court may also approach the President on its own initiative, and propose enactment of a new Parliament Act or an amendment to an existing Act.\n", "In April 2012, during oral argument in a Fifth Circuit case involving the Affordable Health Care Act (ACA), Judge Smith ordered the Department of Justice to provide his panel of three judges with a three-page, single-spaced report explaining President Obama's views on judicial review. Judge Smith's order was prompted by Obama's recent press conference remarks on a case pending before the Supreme Court in which the Court was considering, among other things, whether to strike down the entire ACA as unconstitutional. Obama had said that if the Supreme Court overturned the ACA, it would be \"an unprecedented, extraordinary step of overturning a law that was passed by a strong majority of a democratically elected Congress,\" and that a law that was passed by Congress on an economic issue had not been overturned by the court \"going back to the ’30s, pre New Deal,\" remarks that were criticized by many as historically and legally inaccurate. Though Judge Smith's response and order were criticized by some legal scholars and members of the press, Bush administration U.S. Attorney General and former judge Michael Mukasey defended Smith, stating that Obama's remarks had called judicial review \"into question,\" so that \"the court has, it seems to me, every obligation to sit up and take notice of Mr Obama.\" U.S. Attorney General Eric Holder said that the Justice Department would respond \"appropriately\" to the judge's request and filed a short response, conceding that the federal courts have the power to strike down laws passed by Congress but citing Supreme Court precedent for the proposition that those laws are presumed constitutional and should only be overturned \"sparingly\".\n" ]

[ "Advocates of unions claim that the higher wages that unions demand can be paid for through company profits. However, as Milton Friedman pointed out, profits are only very rarely high enough. 80% of national income is wages, and only about 6% is profits after tax, providing very little room for higher wages, even if profits could be totally used up. Moreover, profits are invested leading to an increase in capital: which raises the value of labor, increasing wages. If profits were totally removed, this source of wage increase would be removed.\n", "BULLET::::- Wages: In capitalism, workers are rewarded according to their contract with their employer. Power elites propagate the illusion that market forces mean wages converge to an equilibrium at which workers are paid for precisely the value of their services. In reality, workers are paid less than the value of their productivity — the difference forming profit for the employer. In this sense, all paid employment is exploitation and the worker is \"alienated\" from their work. Insofar as the profit-motive drives the market, it is impossible for workers to be paid for the full value of their labour, as all employers will act in the same manner.\n", "BULLET::::- Wages: In capitalism, workers are rewarded according to their contract with their employer. Power elites propagate the illusion that market forces mean wages converge to an equilibrium at which workers are paid for precisely the value of their services. In reality workers are paid less than the value of their productivity — the difference forming profit for the employer. In this sense all paid employment is exploitation and the worker is \"alienated\" from their work. Insofar as the profit-motive drives the market, it is impossible for workers to be paid for the full value of their labour, as all employers will act in the same manner.\n", "While labor advocates claim union busting as one possible cause of outsourcing, another claim is high corporate income tax rate in the U.S. relative to other OECD nations, and the practice of taxing revenues earned outside of U.S. jurisdiction, a very uncommon practice. Some counterclaim that the actual taxes paid by US corporations may be considerably lower than \"official\" rates due to the use of tax loopholes, tax havens, and \"gaming the system\".\n", "BULLET::::- Reduced wages and benefits: a 2014 report by In the Public Interest, a resource center on privatization, argues that \"outsourcing public services sets off a downward spiral in which reduced worker wages and benefits can hurt the local economy and overall stability of middle and working class communities.\"\n", "It (see \"arguments in favor\" above) is sometimes argued by proponents of dividend taxation that employee wages are subject to the same double taxation, on the theory that corporate tax reduces the company's income available to pay wages, just as much as it reduces the amount available to pay dividends. However, employee wages are determined by employee contracts and the (employer would therefore have to wait for the expiration of these contracts) before wages can be lowered in response to a corporate tax bill increase. Shareholders, on the other hand, are entitled only to the residue of profits after meeting all other expenses, including corporate taxes. So if corporate taxes rise, the shareholder is entitled to less. Moreover, wages, unlike dividends, are deductible in the computation of corporate taxable profits, and so pass to employees with no amount deducted for tax at the corporate level. (These factors make it a priori more likely for corporations to pass on an increased corporate tax bill to the shareholders), still, in the long term market pressures could in theory lead to at least some of the additional cost being passed on to employees.\n", "BULLET::::- reducing wages — this can only go to a certain point, because if wages fall below the ability of workers to purchase their means of subsistence, they will be unable to reproduce themselves and the capitalists will not be able to find sufficient labor power.\n" ]

[ "The U.S. Supreme Court has held that all executive orders from the president of the United States must be supported by the Constitution, whether from a clause granting specific power, or by Congress delegating such to the executive branch. Specifically, such orders must be rooted in Article II of the US Constitution or enacted by the congress in statutes. Attempts to block such orders have been successful at times when such orders exceeded the authority of the president or could be better handled through legislation.\n", "Executive orders, which are instructions from the President to the executive branch of government, are decrees in the general sense in that they have the force of law, although they cannot override statute law or the Constitution and are subject to judicial review.\n", "In the United States, an executive order is a directive issued by the president of the United States that manages operations of the federal government and has the force of law. The legal or constitutional basis for executive orders has multiple sources. Article Two of the United States Constitution gives the president broad executive and enforcement authority to use their discretion to determine how to enforce the law or to otherwise manage the resources and staff of the executive branch. The ability to make such orders is also based on express or implied Acts of Congress that delegate to the president some degree of discretionary power (delegated legislation).\n", "The United States Constitution does not have a provision that explicitly permits the use of executive orders. The term \"executive power\" in Article II, Section 1, of the Constitution is not entirely clear. The term is mentioned as direction to \"take Care that the Laws be faithfully executed\" and is part of Article II, Section 3. The consequence of failing to comply could possibly be removal from office.\n", "Like both legislative statutes and regulations promulgated by government agencies, executive orders are subject to judicial review and may be overturned if the orders lack support by statute or the Constitution. Major policy initiatives require approval by the legislative branch, but executive orders have significant influence over the internal affairs of government, deciding how and to what degree legislation will be enforced, dealing with emergencies, waging wars, and in general fine-tuning policy choices in the implementation of broad statutes. As the head of state and head of government of the United States, as well as commander-in-chief of the United States Armed Forces, only the president of the United States can issue an executive order.\n", "Executive orders ( \"Kautusang tagapagpaganap\"), according to \"Book III, Title I, Chapter II, Section 2\" of Administrative Code of 1987, refer to the \"\"Acts of the President providing for rules of a general or permanent character in implementation or execution of constitutional or statutory powers.\"\" \"Executive Order No. 292\", which instituted the Administrative Code of 1987, is an example of an executive order.\n", "Others argue that Article II of the Constitution requires the President to execute the law, such law being what the lawmaker (e.g. Congress, in the case of statutory contempt) says it is (per Article I). The Executive Branch cannot either define the meaning of the law (such powers of legislation being reserved to Congress) or interpret the law (such powers being reserved to the several Federal Courts). They argue that any attempt by the Executive to define or interpret the law would be a violation of the separation of powers; the Executive may only—and is obligated to—execute the law consistent with its definition and interpretation; and if the law specifies a duty on one of the President's subordinates, then the President must \"take care\" to see that the duty specified in the law is executed. To avoid or neglect the performance of this duty would not be faithful execution of the law, and would thus be a violation of the separation of powers, which the Congress and the Courts have several options to remedy.\n" ]

[ "According to the rules of golf, all club grips must have the same cross-section shape along their entire length (the diameter can vary), and with the exception of the putter, must have a circular cross-section. The putter may have any cross section that is symmetrical along the length of the grip through at least one plane; \"shield\" profiles with a flat top and curved underside are common. Grips may taper from thick to thin along their length (and virtually all do), but they are not allowed to have any \"waisting\" (a thinner section of the grip surrounded by thicker sections above and below it) or \"bulges\" (thicker sections of the grip surrounded by thinner sections). Minor variations in surface texture (such as the natural variation of a \"wrap\"-style grip) are not counted unless significant.\n", "The face of the club starts square to the target line. The club goes straight back and straight through along the same path like a pendulum. One strategy is to aim the ball 10% past the hole. Another is to look at the hole for long putts instead of the ball.\n", "The logo for the entire golf complex is a profile of a boy caddie carrying a golf bag with three golf clubs sticking up from it. It is based on the images carved into the black exterior window shutters on its clubhouse.\n", "Each head has one face which contacts the ball during the stroke. Putters may have two striking faces, as long as they are identical and symmetrical. Some chippers (a club similar in appearance to a double-sided putter but having a loft of 35–45 degrees) have two faces, but are not legal. Page 135 of the 2009 USGA rules of golf states:\n", "BULLET::::- Adhesive clubface surfaces attach to the face of irons or woods and create extra backspin to reduce roll or make the face of the club softer for more consistent shorter-distance shots. These are illegal in competitions.\n", "Golfers start with the non-dominant side of the body facing the target (for a right-hander, the target is to their left). At address, the player's body and the centerline of the club face are positioned parallel to the desired line of travel, with the feet either perpendicular to that line or slightly splayed outward. The feet are commonly shoulder-width apart for middle irons and putters, narrower for short irons and wider for long irons and woods. The ball is typically positioned more to the \"front\" of the player's stance (closer to the leading foot) for lower-lofted clubs, with the usual ball position for a drive being just behind the arch of the leading foot. The ball is placed further \"back\" in the player's stance (toward the trailing foot) as the loft of the club to be used increases. Most iron shots and putts are made with the ball roughly centered in the stance, while a few mid- and short-iron shots are made with the ball slightly behind the centre of the stance to ensure consistent contact between the ball and clubface, so the ball is on its way before the club continues down into the turf.\n", "Each hole has its own name, and some holes are named after famous courses or golf holes. The signature hole is the fifth hole (named Oak Tree), a 592-yard par five where players must avoid the oak tree that is used in the club's logo. Other notable holes include the eighth hole (named Harbor Town after Dye's Harbour Town Golf Links), par three with water down the entire left side. The tenth hole (named after the Prairie Dunes Country Club) is a long, tight par four. The 13th hole is named due to its size, after a postage stamp. Golfers liken landing a ball on the green to landing a ball on a space the size of a postage stamp.\n" ]

[ "While they have been used by 10% of American children in any given week, they are not recommended in Canada or the United States in children 6 years or younger because of lack of evidence showing effect and concerns of harm. One version with codeine, guaifenesin, and pseudoephedrine was the 241st most prescribed medication in 2016 in the United States with more than 2 million prescriptions.\n", "Due to allegations that school officials coerced parents into administering medication such as Ritalin to their child, an amendment to the IDEA was added called prohibition on mandatory medication. Schools may not require parents to obtain a controlled substance as a condition of:\n", "Prior to the 1990s, only 20% of all drugs prescribed for children in the United States were tested for safety or efficacy in a pediatric population. This became a major concern of pediatricians as evidence accumulated that the physiological response of children to many drugs differed significantly from those drugs' effects on adults. Children react different to the drugs because of many reason, including size, weight, etc. There were several reasons that not many medical trials were done with children. For many drugs, children represented such a small proportion of the potential market, that drug manufacturers did not see such testing as cost-effective.\n", "Partially because of these issues many drugs that are used in children have never been formally studied in children. Many drugs work differently in children. Reye's syndrome, for example, is a potentially fatal complication of aspirin therapy in children that is very rare in adults.\n", "Children up to the age of five can find it difficult to distinguish between the main program and commercial breaks. This is particularly so when a toy range is linked to a television series they are watching. Many children do not understand the intentions of marketing and commercials until the age of eight. Media literacy programmes such as Media Smart are being used to help children understand and think critically about advertising.\n", "Issues regarding youth marketing and advertising and the effect they have on children are taken into consideration all across the world. The regulations to protect young child audiences against certain advertisements vary across different countries. In Greece, commercials for toys cannot be aired before 10 pm, and in Belgium, it is forbidden to broadcast commercials during children's shows. Putting a restriction on when certain advertisements are allowed to be shown, will result in less young consumers watching and absorbing the information shown. This will reduce the degree of influence the advertisement would have had on them.\n", "Manufacturers often display information about the intended age of the children who will play with the toy. In the U.S. this label is sometimes mandated by the CPSC, especially for toys which may present a choking hazard for children under three years of age. In most countries the intended age is either shown as a minimum age or as an age range. While one reason for this is the complexity of the toy and how much it will interest or challenge children of different ages, another is to highlight that it may be unsafe for younger children. While a toy might be \"suitable\" for children of one age, and thus this is the age \"recommended\" on the product, there may be safety hazards associated with use by a lower age group, necessitating a mandatory warning. Some manufacturers also explain the specific dangers next to the advised age (as is mandated by European and International toy safety standards EN71 and ISO 8124 respectively, but not US standard ASTM F963). Some accidents occur when babies play with toys intended for older children.\n" ]

[ "Supra-aural headphones or on-ear headphones have pads that press against the ears, rather than around them. They were commonly bundled with personal stereos during the 1980s. This type of headphone generally tends to be smaller and lighter than circumaural headphones, resulting in less attenuation of outside noise. Supra-aural headphones can also lead to discomfort due to the pressure on the ear as compared to circumaural headphones that sit around the ear. Comfort may vary due to the earcup material.\n", "Itching ears is a term used in the Bible to describe individuals who seek out messages and doctrines that condone their own lifestyle, as opposed to adhering to the teachings of the apostles. The term is found only once in the Bible, in 2 Timothy 4.\n", "The outer shells of in-ear headphones are made up of a variety of materials, such as plastic, aluminum, ceramic and other metal alloys. Because in-ear headphones engage the ear canal, they can be prone to sliding out, and they block out much environmental noise. Lack of sound from the environment can be a problem when sound is a necessary cue for safety or other reasons, as when walking, driving, or riding near or in vehicular traffic.\n", "According to several sites there have been early complaints of a high-pitched whine during audio playback through the headphones. With the first officially available update, released to testers on 9 December 2011, this issue was solved.\n", "Open-back headphones have the back of the earcups open. This leaks more sound out of the headphone and also lets more ambient sounds into the headphone, but gives a more natural or speaker-like sound, due to including sounds from the environment.\n", "The stereocilia (hair cells) of the inner ear can become subjected to bending from loud noises. Because they are not regeneratable in humans, any major damage or loss of these hair cells leads to permanent hearing impairment and other hearing-related diseases. Outer hair cells serve as acoustic amplifiers for stimulation of the inner hair cells. Outer hair cells respond primarily to low-intensity sounds.\n", "Spinose ear ticks are a constant source of annoyance and irritation for their definitive hosts. Their tendency to occur in large numbers can cause ulceration of the inner ear, high sensitivity of the ears, large amounts of blood loss, and even deafness. Heavily infested animals often shake and rub their heads, which can cause their outer ears to become excoriated and raw. Several cases of human infestation have been reported, and the tick has been incriminated in some instances of pathogen transmission.\n" ]

[ "The term \"Europe\" may be used in one of several different contexts by British and Irish people: either to refer to the whole of the European continent, to refer to only to Mainland Europe, sometimes called \"continental Europe\" or simply \"the Continent\" by some people in the archipelago. \"Europe\" may also be used in reference to the European Union (or, historically, to the European Economic Community). A comedic treatment of the different uses of this word appears in an episode of the BBC sitcom \"To the Manor Born\". When tradesmen are taking measurements in metric, and Audrey fforbes-Hamilton objects on the grounds that the house was built \"in feet and inches\", a tradesman says \"We're in Europe now\", referring to the European Economic Community. Audrey fforbes-Hamilton retorts \"Well you may be, but I'm staying here!\" - implying that to her, the word \"Europe\" referred only to mainland Europe, excluding Britain and Ireland.\n", "The concept of \"Europe\" referring to Western Europe or Germanic Europe arises in the 19th century, contrasting with the Russian Empire, as is evidenced in Russian philosopher Danilevsky's \"Russia and Europe\".\n", "BULLET::::- EU/Europe: Just as the terms 'America' and 'American' are frequently used to refer only to the United States and its people, the terms 'Europe' and 'European' are also frequently used to refer only to the European Union and its people, and this similarly sometimes causes resentment among some non-EU Europeans, although the enlargement of the EU means that there are now fewer non-EU Europeans left to take offence than there used to be when the EU was smaller.\n", "BULLET::::3. The feeling that a European Society should keep the doors open for other communities, and accept members from regions such as Eastern European and Oeral, United States but also Asian, African, Oceania and America's. Hence the Acronym was changed to 'International' instead of 'European' Society, as was decided in London on October 23, 2013.\n", "Debate on European unity is often vague as to the boundaries of 'Europe'. The word 'Europe' is widely used as a synonym for the European Union, although most of the European continent's geographical area is not in the EU, and some of the EU is outside of Europe (e.g. French Guiana). Most of Europe's people do, however, live in the EU.\n", "From the later 20th century, 'Europe' has come to be widely used as a synonym for the European Union even though there are millions of people living on the European continent in non-EU member states. The prefix \"pan\" implies that the identity applies throughout Europe, and especially in an EU context, and 'pan-European' is often contrasted with national identity.\n", "According to an article by \"The Guardian\" entitled \"European stereotypes: what do we think of each other and are we right? - interactive\", the Europe stereotype towards Britain is as \"drunken, semi-clad hooligans or else snobbish, stiff free marketers\", their view towards France is \"cowardly, arrogant, chauvinistic, erotomaniacs\", and they see Germany as \"uber-efficient, diligent [and] disciplined\". To Europe, Italy is \"tax-dodging, Berlusconi-style Latin lovers and mama's boys, incapable of bravery\", Poland is \"heavy-drinking ultracatholics with a whiff of antisemitism\", and Spain is \"macho men and fiery women prone to regular siestas and fiestas\". While some countries such as Germany proudly own their stereotype, others like Spain argue that theirs is a warped view based on experiences while on holiday instead of having actually lived there.\n" ]

[ "As often happens with gourmet recipes which become popular, the ingredients that were rare, expensive, seasonal, or difficult to prepare were gradually replaced with cheaper and more readily available foods.\n", "Bread, cheese, salted food and other prepared foods have been sold for thousands of years. Other kinds were developed with improvements in food technology. Types of convenience foods can vary by country and geographic region. Some convenience foods have received criticism due to concerns about nutritional content and how their packaging may increase solid waste in landfills. Various methods are used to reduce the unhealthy aspects of commercially produced food and fight childhood obesity.\n", "The recovered food is edible, but often not sellable. Products that are at or past their \"sell by\" dates or are imperfect in any way such as a bruised apple or day-old bread are donated by grocery stores, food vendors, restaurants, and farmers markets. Other times, the food is unblemished, but restaurants may have made or ordered too much or may have good pieces of food (such as scraps of fish or meat) that are byproducts of the process of preparing foods to cook and serve. Also, food manufacturers may donate products that marginally fail quality control, or that have become short-dated.\n", "\"Cookin' Cheap \"contrasted itself with contemporary cooking shows of its time by not attempting to hide the tedious preparation work that goes into cooking a recipe, and by using common ingredients purchased at local supermarkets in Roanoke, Virginia, where the show was produced. Johnson stated that the idea for the show was born from the frustration he suffered when trying to recreate the recipes of Julia Child, lacking ingredients that are unavailable in a small southern town.\n", "Packaged foods are manufactured outside the home for purchase. This can be as simple as a butcher preparing meat, or as complex as a modern international food industry. Early food processing techniques were limited by available food preservation, packaging, and transportation. This mainly involved salting, curing, curdling, drying, pickling, fermenting, and smoking. Food manufacturing arose during the industrial revolution in the 19th century. This development took advantage of new mass markets and emerging technology, such as milling, preservation, packaging and labeling, and transportation. It brought the advantages of pre-prepared time-saving food to the bulk of ordinary people who did not employ domestic servants.\n", "Expensive ingredients would replace the common ingredients, making the dishes much less humble. The third source of recipes was Escoffier himself, who invented many new dishes, such as pêche Melba and crêpes Suzette. Escoffier updated \"Le Guide Culinaire\" four times during his lifetime, noting in the foreword to the book's first edition that even with its 5,000 recipes, the book should not be considered an \"exhaustive\" text, and that even if it were at the point when he wrote the book, \"it would no longer be so tomorrow, because progress marches on each day.\"\n", "The canned food industry (\"tinning\" in the UK) has been used to preserve food for around a century. Before this it was common to buy food either salted, dried or fresh. The industries that produced these cans, or \"tins,\" were small and usually family owned, and only mildly able to compete with one another because the market was so large.\n" ]

[ "Some evolutionary biologists theorize that there are four main lineages of the ABO gene and that mutations creating type O have occurred at least three times in humans. From oldest to youngest, these lineages comprise the following alleles: \"A101/A201/O09\", \"B101\", \"O02\" and \"O01\". The continued presence of the O alleles is hypothesized to be the result of balancing selection. Both theories contradict the previously held theory that type O blood evolved first.\n", "The two common O alleles, O01 and O02, share their first 261 nucleotides with the group A allele A01. However, unlike the group A allele, a guanosine base is subsequently deleted. A premature stop codon results from this frame-shift mutation. This variant is found worldwide, and likely predates human migration from Africa. The O01 allele is considered to predate the O02 allele.\n", "Yamamoto \"et al.\" further note: \"Although the O blood type is common in all populations around the world, there is no evidence that the O gene represents the ancestral gene at the ABO locus. Nor is it reasonable to suppose that a defective gene would arise spontaneously and then evolve into normal genes.\n", "Hereditary angioedema (HAE) exists in three forms, all of which are caused by a genetic mutation inherited in an autosomal dominant form. They are distinguished by the underlying genetic abnormality. Types I and II are caused by mutations in the \"SERPING1\" gene, which result in either diminished levels of the C1-inhibitor protein (type I HAE) or dysfunctional forms of the same protein (type II HAE). Type III HAE has been linked with mutations in the \"F12\" gene, which encodes the coagulation protein factor XII. All forms of HAE lead to abnormal activation of the complement system, and all forms can cause swelling elsewhere in the body, such as the digestive tract. If HAE involves the larynx, it can cause life-threatening asphyxiation. The pathogenesis of this disorder is suspected to be related to unopposed activation of the contact pathway by the initial generation of kallikrein and/or clotting factor XII by damaged endothelial cells. The end product of this cascade, bradykinin, is produced in large amounts and is believed to be the predominant mediator leading to increased vascular permeability and vasodilation that induces typical angioedema \"attacks\".\n", "\"S\" is incomplete dominant (towards co-dominant) to \"s\". DNA studies have not yet confirmed the existence of all four alleles, with some research suggesting the existence of at least two alleles (\"S\" and \"s\") and other research suggesting the possible existence of a third allele (\"s\").\n", "Given that SLOS is an autosomal recessive disorder, mutations in \"DHCR7\" on both copies of chromosome 11 are necessary to have the disorder. More than 130 different types of mutations have been identified. Missense mutations (single nucleotide change resulting in a code for a different amino acid) are the most common, accounting for 87.6% of the SLOS spectrum. These typically reduce the function of the enzyme but may not inhibit it completely. Much depends on the nature of the mutation (i.e. which amino acid is replaced and where). Null mutations are much less common, these mutations produce either a completely dysfunctional enzyme, or no enzyme at all. Thus, missense mutations may be more common overall because they are less lethal than nonsense mutations; nonsense mutations may simply result in spontaneous abortion.\n", "With the development of DNA sequencing, it has been possible to identify a much larger number of alleles at the ABO locus, each of which can be categorized as A, B, or O in terms of the reaction to transfusion, but which can be distinguished by variations in the DNA sequence. There are six common alleles in white individuals of the ABO gene that produce one's blood type:\n" ]

[ "The Big Bang itself is a scientific theory and as such stands or falls by its agreement with observations. However, as a theory which addresses the nature of the universe since its earliest discernible existence, the Big Bang carries possible theological implications regarding the concept of creation out of nothing. Many atheist philosophers have argued against the idea of the Universe having a beginning - the Universe might simply have existed for all eternity, but with the emerging evidence of the Big Bang theory, many theologians and physicists have viewed it as implicating theism; a popular philosophical argument for the existence of God known as the Kalam cosmological argument rests in the concepts of the Big Bang. In the 1920s and 1930s almost every major cosmologist preferred an eternal steady state Universe, and several complained that the beginning of time implied by the Big Bang imported religious concepts into physics; this objection was later repeated by supporters of the steady state theory, who rejected the implication that the universe had a beginning.\n", "Since this discovery, the Big Bang theory has been considered to provide the best explanation of the origin of the universe. In most astrophysical publications, the Big Bang is implicitly accepted and is used as the basis of more complete theories.\n", "Since the 1980s, the big-bang theory has been the prevailing cosmological model for the universe. It was envisioned by a Roman Catholic priest, Monsignor Georges Lemaître in the 1930s. Lemaître suggested that the evident expansion of the universe, if projected back in time, meant that at some finite time in the past all the mass of the universe was concentrated into a single point, a \"primeval atom\" where and when the fabric of time and space came into existence. However, in the 1920s and 1930s almost every major cosmologist subscribed to a view that the universe is in an eternal steady state. After Lemaître proposed his theory, some scientists complained that its assumption that time had a beginning amounted to a reimportation of religious concepts into physics. When the expression \"Big Bang\" was coined by Fred Hoyle in 1949, he meant it to be slightly pejorative, but the term stuck and gained currency. Lemaître himself concluded that an initial \"creation-like\" event must have occurred. The Big-Bang is contrary to young-Earth creationism, sensu stricto. But it has been welcomed by other Christian creeds, and it is in line with the Roman Catholic concept of creation. Under the Anthropic principle, by which the properties of the universe is seemingly fine-tuned for our own existence, some Christians see evidence that a divine creator has purposefully designed the universe.\n", "\"The Big Bang as the origin of the universe:\" One of the common misconceptions about the Big Bang model is that it fully explains the origin of the universe. However, the Big Bang model does not describe how energy, time, and space was caused, but rather it describes the emergence of the present universe from an ultra dense and high-temperature initial state.\n", "The Big Bang explains the evolution of the universe from a density and temperature that is well-beyond humanity's capability to replicate, so extrapolations to most extreme conditions and earliest times are necessarily more speculative. Georges Lemaître called this initial state the \"\"primeval atom\"\" while George Gamow called the material \"\"ylem\"\". How the initial state of the universe originated is still an open question, but the Big Bang model does constrain some of its characteristics. For example, observations indicate the universe is consistent with being flat which implies a balance between gravitational potential energy and other forms requiring no additional energy to be created, while quantum fluctuations in the early universe can provide the circumstances for dense regions of matter (such as superclusters) to form. Ultimately, the Big Bang theory, built upon the equations of classical general relativity, indicates a singularity at the origin of cosmic time, and such an infinite energy density may be a physical impossibility. In any case, the physical theories of general relativity and quantum mechanics as currently realized are not applicable before the Planck Epoch, and correcting this will require the development of a correct treatment of quantum gravity Certain quantum gravity treatments, such as the Wheeler–DeWitt equation, imply that time itself could be an emergent property. As such, physics may conclude that time did not exist before the Big Bang so there might be no \"beginning\" or \"before\". \n", "English astronomer Fred Hoyle is credited with coining the term \"Big Bang\" during a 1949 BBC radio broadcast, saying: \"These theories were based on the hypothesis that all the matter in the universe was created in one big bang at a particular time in the remote past.\"\n", "The Big Bang theory is the prevailing cosmological model for the universe from the earliest known periods through its subsequent large-scale evolution. Despite its success in explaining many observed features of the universe including galactic redshifts, the relative abundance of light elements such as hydrogen and helium, and the existence of a cosmic microwave background, there are several questions that remain unanswered. For example, the standard Big Bang model does not explain why the universe appears to be same in all directions, why it appears flat on very large distance scales, or why certain hypothesized particles such as magnetic monopoles are not observed in experiments.\n" ]

[ "A cough is a sudden, and often repetitively occurring, protective reflex which helps to clear the large breathing passages from fluids, irritants, foreign particles and microbes. The cough reflex consists of three phases: an inhalation, a forced exhalation against a closed glottis, and a violent release of air from the lungs following opening of the glottis, usually accompanied by a distinctive sound.\n", "A foreign body can sometimes be suspected, for example if the cough started suddenly when the patient was eating. Rarely, sutures left behind inside the airway branches can cause coughing. A cough can be triggered by dryness from mouth breathing or recurrent aspiration of food into the windpipe in people with swallowing difficulties.\n", "BULLET::::- Rales: Small clicking, bubbling, or rattling sounds in the lungs. They are heard when a person breathes in (inhales). They are believed to occur when air opens closed air spaces. Rales can be further described as moist, dry, fine, and coarse.\n", "When air enters the veins, it travels to the right side of the heart, and then to the lungs. This can cause the vessels of the lung to constrict, raising the pressure in the right side of the heart. If the pressure rises high enough in a patient who is one of the 20% to 30% of the population with a patent foramen ovale, the gas bubble can then travel to the left side of the heart, and on to the brain or coronary arteries. Such bubbles are responsible for the most serious of gas embolic symptoms.\n", "Inhalation begins with the contraction of the muscles attached to the rib cage; this causes an expansion in the chest cavity. Then takes place the onset of contraction of the diaphragm, which results in expansion of the intrapleural space and an increase in negative pressure according to Boyle's law. This negative pressure generates airflow because of the pressure difference between the atmosphere and alveolus. Air enters, inflating the lung through either the nose or the mouth into the pharynx (throat) and trachea before entering the alveoli.\n", "BULLET::::- Upper airway cough syndrome is the most common cause of chronic coughing. It is diagnosed when the secretion of excess mucus from the nose / sinus drains into the pharynx or the back of the throat causing an induced cough.\n", "Situated above the larynx, the epiglottis acts as a flap which closes off the trachea during the act of swallowing to direct food into the esophagus. If food or liquid does enter the trachea and contacts the vocal folds it causes a cough reflex to expel the matter in order to prevent pulmonary aspiration.\n" ]

[ "All three colours have evolutionary advantages in different ways. While yellow females have higher fitness due to their large clutch sizes, orange females enjoy high fitness due to their large body size and increase competitive advantages. Mixed females exhibit both of these advantages.\n", "While sexual selection generally favours red males, natural selection maintains variation by selecting for more energetically efficient yellow males. Both colour traits have an evolutionary advantage, which explains the maintenance of this polymorphism in nature.\n", "Haemophilia and red-green colour blindness are recessive, X-linked, pseudodominant genetic disorders, expressed mainly in human males because human females need to be homozygous (i.e., to have inherited the recessive allele from both parents) to show these traits.\n", "In chapter 4, he mentions that they all have common physical characteristics, blue eyes (\"truces et caerulei oculi\" = \"sky-coloured, azure, dark blue, dark green), reddish hair (\" rutilae comae\" = \"red, golden-red, reddish yellow\"), and large bodies, vigorous at the first onset but not tolerant of exhausting labour, tolerant of hunger and cold, but not of heat or thirst.\n", "Trichromacy may also be evolutionarily favorable in offspring health (and therefore increasing fitness) through mate choice. M and L cone pigments maximize sensitivities for discriminating blood oxygen saturation through skin reflectance. Therefore, the formation of trichromatic color vision in certain primate species may have been beneficial in modulating health of others, thus increasing the likelihood for trichromatic color vision to dominate a specie’s phenotypes as the fitness of offspring increases with parental health.\n", "Research on freshly emerged imagines of \"P. demoleus\" showed that they have an inborn or spontaneous preference while feeding for blue and purple colours, while the yellow, yellowish-green, green, and blue-green colours are completely neglected.\n", "This theory is centered around the idea that the benefit for possessing the different M and L cone pigments are so that during times of fruit shortages, an animal's ability to identify the younger and more reddish leaves, which contain higher amounts of protein, will lead to a higher rate of survival. This theory supports the evidence showing that trichromatic color vision originated in Africa, as figs and palms are scarce in this environment thus increasing the need for this color vision selection. However, this theory does not explain the selection for trichromacy polymorphisms seen in dichromatic species that are not from Africa.\n" ]

[ "The Eggs is an Australian children's animated television program that first screened on the Nine Network in 2004. There are 52 episodes of 12 minutes duration. Two episodes are usually screened together in a half hour timeslot.\n", "Numerous easter eggs have been found in the digital files for \"Mouth Sounds\" and \"Mouth Silence\" that each relate to \"All Star\". For example, when the metadata of every track on the former is viewed, the creation date of all the files is May 4, 1999 which was the release date of \"All Star.\"\n", "To promote the series and the episode where Ash obtains an egg, \"Pokémon Black\" and \"White\" players were able to obtain an egg containing either an Axew, a Pansage or a Pidove exclusively at US Toys \"R\" Us stores between April 27, 2011 and May 31, 2011. Each one contained their moves like anime counterparts (Ash's Pidove, Cilan's Pansage and Iris' Axew). Players were only able to get one egg and which of the Pokémon the egg hatched into was random.\n", "Many of the shortlisted clips are available on the BBC Earth Youtube channel. The lyrebird clip has been viewed more than 3 million times since it was first made available. Web users in the UK can also find them, along with many other clips, in the David Attenborough's Favourite Moments collection on the BBC Wildlife Finder.\n", "Two More Eggs is a web series of animated shorts produced by The Brothers Chaps for Disney XD's YouTube channel and Disney XD. The Brothers Chaps previously produced the web series \"Homestar Runner\". \"Two More Eggs\" is considered to be Disney's first animated web series.\n", "The show was successful, but it was largely ignored by critics. It never received a video release, despite the official \"Pokémon\" site mentioning that one would be announced in the future. A cast recording CD of the show, however, had a limited release.\n", "Egg hatching minigame is where players buys an egg from the egg dispenser and publish videos with the theme that the egg likes to hatch it. To find out the egg's theme, players have to publish videos to find out. Afterwards, when the player clicks on the egg there should be a small icon indicating the egg's theme. \n" ]

[ "It is important to make clear that embezzlement is not always a form of theft or an act of stealing, since those definitions specifically deal with taking something that does not belong to the perpetrators. Instead, embezzlement is, more generically, an act of deceitfully secreting assets by one or more persons that have been \"entrusted\" with such assets. The persons entrusted with such assets may or may not have an ownership stake in such assets.\n", "Embezzlement is the act of withholding assets for the purpose of conversion (theft) of such assets, by one or more persons to whom the assets were entrusted, either to be held or to be used for specific purposes. Embezzlement is a type of financial fraud. For example, a lawyer might embezzle funds from the trust accounts of their clients; a financial advisor might embezzle the funds of investors; and a husband or a wife might embezzle funds from a bank account jointly held with the spouse.\n", "Embezzlement is misappropriation when the property or funds involved have been lawfully entrusted to the embezzler. In circumstances where the funds are accessible to, but not entrusted to, the perpetrator, it is not embezzlement but can still be considered larceny, misappropriation, misapplication, or some other similar term.\n", "Embezzlement is the theft of entrusted funds. It is political when it involves public money taken by a public official for use by anyone not specified by the public. A common type of embezzlement is that of personal use of entrusted government resources; for example, when an official assigns public employees to renovate his own house.\n", "Embezzlement is the unlawful taking of property by someone who it was entrusted to. For example, if a named person trusts their friend enough to allow them to hold their wallet, and the friend goes home without returning the wallet with the intention of keeping the money, the friend would have committed embezzlement.\n", "BULLET::::- \"Embezzlement\" is the illegal taking or appropriation of money or property that has been entrusted to a person but is actually owned by another. In political terms this is called graft which is when a political office holder unlawfully uses public funds for personal purposes.\n", "Embezzlement usually is a premeditated crime, performed methodically, with precautions that conceal the criminal conversion of the property, which occurs without the knowledge or consent of the affected person. Often it involves the trusted individual embezzling only a small proportion of the total of the funds or resources they receive or control, in an attempt to minimize the risk of the detection of the misallocation of the funds or resources. When successful, embezzlements may continue for many years without detection. The victims often realize that the funds, savings, assets, or other resources, are missing and that they have been duped by the embezzler, only when a relatively large proportion of the funds are needed at one time; or the funds are called upon for another use; or when a major institutional reorganization (the closing or moving of a plant or business office, or a merger/acquisition of a firm) requires the complete and independent accounting of all real and liquid assets, prior to or concurrent with the reorganization.\n" ]

[ "A charged particle moving in a -field experiences a \"sideways\" force that is proportional to the strength of the magnetic field, the component of the velocity that is perpendicular to the magnetic field and the charge of the particle. This force is known as the \"Lorentz force\", and is given by\n", "Any charged particle in an electric field will feel a force proportional to the charge and field strength such that formula_1, where F is force, q is charge, and E is electric field strength. Similarly, any particle moving in a magnetic field will feel a force proportional to the velocity and charge of the particle. The force felt by any particle is then equal to formula_2, where F is force, q is the charge on the particle, v is the velocity of the particle, B is the strength of the magnetic field, and formula_3 is the cross product. In the case of a velocity selector, the magnetic field is always at 90 degrees to the velocity and the force is simplified to formula_4 in the direction described by the cross product.\n", "Often the magnetic field is defined by the force it exerts on a moving charged particle. Experiments in electrostatics show that a particle of charge in an electric field experiences a force . Other experiments show that a charged particle experiences a force proportional to its relative velocity to a current-carrying wire. The velocity dependent portion can be separated such that the force on the particle satisfies the \"Lorentz force law\",\n", "All moving charged particles produce magnetic fields. Moving point charges, such as electrons, produce complicated but well known magnetic fields that depend on the charge, velocity, and acceleration of the particles.\n", "A charged particle moving in the direction perpendicular to the magnetic field line is subject to the Lorentz force which is normal to the plane individuated by the velocity and the magnetic field. This force bends the path of the particle. In general, since particles also have a velocity component along the magnetic field line, the Lorentz force constrains them to bend and move along spirals around the field lines at the cyclotron frequency.\n", "The motions of low-energy charged particles in the Earth's magnetic field (or in any nearly-dipolar magnetic field) can be usefully described in terms of McIlwain's \"(B,L)\"  coordinates, the first of which, \"B\"  is just the magnitude (or length) of the magnetic field vector.\n", "Charged particles in a uniform electric field follow a parabolic trajectory, since the electric field term (of the Lorentz force which acts on the particle) is the product of the particle's charge and the magnitude of the electric field, (oriented in the direction of the electric field). In a uniform magnetic field however, charged particles follow a circular trajectory due to the cross product in the magnetic field term of the Lorentz force. (That is, the force from the magnetic field acts on the particle in a direction perpendicular to the particle's direction of motion. See: Lorentz force for more details.)\n" ]

[ "BULLET::::- Story, Joseph (Mar 26, 2008) \"Commentaries on the Constitution of the United States: With a Preliminary Review of the Constitutional History of the Colonies and States Before the Adoption of the Constitution 4th Edition\" (2 volumes) (March 26, 2008) with Notes and Commentaries by Cooley, Thomas M. (Clark, New Jersey: The Lawbook Exchange) ; .\n", "In September 2016, CSG held a simulated convention to propose amendments to the United States Constitution in Williamsburg, Virginia. Of the simulation, Meckler said: \"People from all states gathered, proposed six amendments and ran a simulated convention. It has never been done before in American history. The point was proof of concept.\" Meckler said an Article V convention would have three focuses, including imposing financial restraints on the federal government, limiting the power and jurisdiction of the federal government, and imposing term limits on officials and members of Congress.\n", "The Constitution of the United States of America: Analysis and Interpretation (popularly known as the Constitution Annotated or CONAN) is a publication encompassing the United States Constitution with analysis and interpretation by the Congressional Research Service along with in-text annotations of cases decided by the Supreme Court of the United States. The centennial edition of the Constitution Annotated was published in 2013 by the 112th Congress, containing more than 2,300 pages and referencing almost 6,000 cases.\n", "Padover and Jacob W Landynski co-authored \"The Living U.S. Constitution\", an examination of the forming of the United States Constitution, with character sketches of the delegates penned by their contemporaries. The book highlights the complete text of the Constitution and pertinent decisions of the United States Supreme Court affecting issues of constitutionality. Similar Padover works are \"The World of the Founding Fathers\" and \"Sources of Democracy: Voices of Freedom, Hope, and Justice\".\n", "BULLET::::- Pauline Maier (\"American Scripture\" on the Declaration and \"Ratification: The People Debate the Constitution, 1787-1788\", winner of the 2011 George Washington Book Prize and the Fraunces Tavern Book Prize);\n", "This book is currently used in both college and Advanced Placement high school courses across the United States. The book is roughly 780 pages and includes the U.S. Constitution, U.S. Bill of Rights, outcomes of various elections throughout American history, and famous court cases. It is accompanied by a companion website that features practice test questions and detailed explanations on each chapter.\n", "McLaughlin's magnum opus \"A Constitutional History of the United States\" (1935) won the 1936 Pulitzer Prize for History. Written for the average reader, the purpose is \"to present briefly and clearly the constitutional history of the United States during nearly two centuries\", not giving a history of constitutional law as announced by the courts, but of the development of constitutional principles in relation to political and social conditions and forces outside of the courtroom. \"The most significant and conclusive constitutional decision was not rendered by a court of law but delivered at the famous meeting of General Grant and General Lee at Appomattox.\"\n" ]

[ "Tourist links between the two countries are significant, with over 400,000 Australians visiting France each year. Almost 98,000 visitor visas were granted to French nationals to visit Australia in 2005–06, making France the 10th largest source of visitor visa grants, and 1,867 student visas were granted. A working holiday-maker agreement signed between the two countries in November 2003 makes it easier for young French and Australian people to spend time in each other's countries. In 2005–06, 6,126 Australian working holiday visas were granted to French nationals, making France the 7th largest source of working holiday visitors, and 483 were granted to Australians.\n", "Unlike France, the United Kingdom plans to leave the European Union in 2019, after the United Kingdom voted so in a referendum held on 23 June 2016. It is estimated that about 350,000 French people live in the UK, with approximately 400,000 Britons living in France.\n", "Over the years, the UK and France have often taken diverging courses within the European Community. British policy has favoured an expansion of the Community and free trade while France has advocated a closer political union and restricting membership of the Community to a core of Western European states.\n", "In the present day, Spain and the United Kingdom maintain very good relations, both being members of NATO, OECD, and for the moment the European Union. They have many common laws due to EU membership. However, there are a few problems that strain relations slightly, and the withdrawal negotiations may increase strains over some issues.\n", "Spain has borders with four countries: Portugal, France, Andorra, and Morocco; as well as with the British Overseas Territory of Gibraltar. Clocks must normally be set one hour earlier than in Spain after crossing the borders with Portugal.\n", "In October 2015, France played in the 2015 European Cup. During the tournament in November, after already confirming before the tournament's details were announced, France took on England in Leigh. The match was a warm-up game for England before their end-of-year test-series against New Zealand. The French were hammered by a record 80-point margin.\n", "Discussions have shown support for year-round \"winter time\" in e.g. Denmark, the Netherlands (), and Finland () while permanent summer time was supported in Portugal (), Poland (), and Cyprus (). Spanish opinion is split on the matter; the mainland largely favours shifting to UTC, while the Balearic Islands would prefer to remain on and the Canary Islands on . The United Kingdom is due to leave the EU before the reform becomes effective; any new EU directive would apply during the transition period (if any) but thereafter the UK could choose to make its own arrangements. If the UK were thus to continue observing summer/winter time, Northern Ireland would have a one-hour time difference for half the year either with the rest of Ireland or with the rest of the UK. The Irish government is to hold a public consultation on the EU proposal; , the UK Government \"has no plans\" to end daylight saving.\n" ]

[ "In modern color theory, also known as the RGB color model, red, green and blue are additive primary colors. Red, green and blue light combined together makes white light, and these three colors, combined in different mixtures, can produce nearly any other color. This is the principle that is used to make all of the colors on your computer screen and your television. For example, magenta on a computer screen is made by a similar formula to that used by Cennino Cennini in the Renaissance to make violet, but using additive colors and light instead of pigment: it is created by combining red and blue light at equal intensity on a black screen. Violet is made on a computer screen in a similar way, but with a greater amount of blue light and less red light.\n", "Theoretically, only RGB-implemented colors which might be really spectral are its primaries: red, green, and blue, whereas any other (mixed) color is inherently non-spectral. But due to different chromaticity properties of different spectral segments, and also due to practical limitations of light sources, the actual distance between RGB pure color wheel colors and spectral colors shows a complicated dependence on the hue. Due to location of R and G primaries near the almost \"flat\" spectral segment, RGB color space is reasonably good with approximating spectral orange, yellow, and bright (yellowish) green, but is especially poor in reaching a visual appearance of spectral colors between green and blue, as well as extreme spectral colors. The sRGB standard has an additional problem with its \"red\" primary which is shifted to orange due to a trade-off between purity of red and its reasonable luminance, so that the red spectral became unreachable. Some samples in the table below provide only rough approximations of spectral and near-spectral colors.\n", "The RG or red-green color space is a color space that uses only two colors, red and green. It is an additive format, similar to the RGB color model but without a blue channel. Thus, blue is said to be out of gamut. This format is not in use today, and was only used on two-color Technicolor and other early color processes for films; by comparison with a full spectrum, its poor color reproduction made it undesirable. The system cannot create white naturally, and many colors are distorted.\n", "The RGB color model is an additive color model in which red, green and blue light are added together in various ways to reproduce a broad array of colors. The name of the model comes from the initials of the three additive primary colors, red, green, and blue.\n", "Most televisions, computer displays, and projectors produce colors by combining red, green, and blue light in varying intensities—the so-called RGB additive primary colors. The resulting mixtures in RGB color space can reproduce a wide variety of colors (called a gamut); however, the relationship between the constituent amounts of red, green, and blue light and the resulting color is unintuitive, especially for inexperienced users, and for users familiar with subtractive color mixing of paints or traditional artists' models based on tints and shades (). Furthermore, neither additive nor subtractive color models define color relationships the same way the human eye does.\n", "The RGB color model itself does not define what is meant by \"red\", \"green\" and \"blue\" colorimetrically, and so the results of mixing them are not specified as absolute, but relative to the primary colors. When the exact chromaticities of the red, green, and blue primaries are defined, the color model then becomes an absolute color space, such as sRGB or Adobe RGB; see RGB color spaces for more details.\n", "The RGB color model is \"additive\" in the sense that the three light beams are added together, and their light spectra add, wavelength for wavelength, to make the final color's spectrum. This is essentially opposite to the subtractive color model, particularly the CMY color model, that applies to paints, inks, dyes, and other substances whose color depends on \"reflecting\" the light under which we see them. Because of properties, these three colors create white, this is in stark contrast to physical colors, such as dyes which create black when mixed.\n" ]

[ "Other depictions of the Stone Age include the best-selling \"Earth's Children\" series of books by Jean M. Auel, which are set in the Paleolithic and are loosely based on archaeological and anthropological findings.\n", "Back to the Stone Age is a novel by American writer Edgar Rice Burroughs, the fifth in his series set in the lost world of Pellucidar. It first appeared as a six-part serial in \"Argosy Weekly\" from January 9 to February 13, 1937 under the title \"Seven Worlds to Conquer\". It was first published in book form in hardcover by Edgar Rice Burroughs, Inc. in September, 1937 under the present title, and has been reissued a number of times since by various publishers.\n", "The Paleolithic or Palaeolithic (from Greek: παλαιός, \"palaios\", \"old\"; and λίθος, \"lithos\", \"stone\" lit. \"old stone\", coined by archaeologist John Lubbock and published in 1865) is the earliest division of the Stone Age. It covers the greatest portion of humanity's time (roughly 99% of \"human technological history\", where \"human\" and \"humanity\" are interpreted to mean the genus \"Homo\"), extending from 2.5 or 2.6 million years ago, with the first documented use of stone tools by hominans such as \"Homo habilis\", to the end of the Pleistocene around 10,000 BCE. The Paleolithic era ended with the Mesolithic, or in areas with an early neolithisation, the Epipaleolithic.\n", "The Paleolithic or Palaeolithic (), also called the Old Stone Age, is a period in human prehistory distinguished by the original development of stone tools that covers  99% of human technological prehistory. It extends from the earliest known use of stone tools by hominins  3.3 million years ago, to the end of the Pleistocene  11,650 cal BP.\n", "The term Late Stone Age was introduced for South Africa in 1929 by John Hilary Goodwin and C. van Riet Lowe The Lupemban is followed by the so-called Albany industry (12,000 to 9,000 years ago). Finally, the time from 9,000 to 2,000 years ago (7th to 1st millennia BC) is accounted for by the so-called \"Wilton inventory\" microliths.\n", "The concept of a \"Stone Age\" is found useful in the archaeology of most of the world, though in the archaeology of the Americas it is called by different names and begins with a Lithic stage, or sometimes Paleo-Indian. The sub-divisions described below are used for Eurasia, and not consistently across the whole area.\n", "The Stone Age is a prehistoric period in which stone was widely used in the manufacture of implements. This period occurred after the appearance of the genus \"Homo\" about 2.6 million years ago and roughly lasted 2.5 million years to the period between 4500 and 2000 BC with the appearance of metalworking.\n" ]

[ "A \"kunik\" is a form of expressing affection, usually between family members and loved ones, that involves pressing the nose and upper lip against the skin (commonly of the cheeks or forehead) and breathing in, causing the loved one's skin or hair to be suctioned against the nose and upper lip. A common misconception is that the practice arose so that Inuit could kiss without their mouths freezing together. Rather, it is a non-erotic but intimate greeting used by people who, when they meet outside, often have little except their nose and eyes exposed. \n", "\"Cute\" is a much more ambivalent description than social niceties will allow us to admit. When we snatch up something cute in an embrace, we pantomime the act of defending a defenseless little pal from an imaginary threat, but the rigid urgency of our embrace, and the concomitant 'devouring-in-kisses' suggests that what we're protecting the cute thing from is ourselves.\n", "According to a survey by People's Daily Online, almost half of the parents who responded said that their children cannot eat, bathe or dress themselves independently and 15% of the respondents even said their children could not use the toilet independently. When faced with difficulty, \"Kong Kids\" expect others to solve the problems, because they are inexperienced with managing setbacks and have low self-esteem.\n", "Cute aggression is superficially aggressive behaviour caused by seeing something cute, such as a human baby or young animal. People experiencing cute aggression may grit their teeth, clench their fists, or feel the urge to pinch and squeeze something they consider cute, while not actually causing or intending to cause any harm.\n", "There are suggestions that hormone levels can affect a person's perception of cuteness. Konrad Lorenz suggests that \"caretaking behaviour and affective orientation\" towards infants as an innate mechanism, and this is triggered by cute characteristics such as \"chubby cheeks\" and large eyes. The Sprengelmeyer et al. (2009) study expands on this claim by manipulating baby pictures to test groups on their ability to detect differences in cuteness. The studies show that premenopausal women detected cuteness better than same aged postmenopausal women. Furthermore, to support this claim, women taking birth control pills that raise levels of reproductive hormones detect cuteness better than same aged women not taking the pill.\n", "Maewnam (Lapassalan Jiravechsoontornkul) is a girl who suffered from trauma as a child, she had confessed to a boy she liked, but was rejected and called ugly. This started a chain, in which the other children also called her ugly. Every since that accident she had always worn a box over her head and had always stayed at home not interacting with anyone. She relents to attend the school after much pleading from her father. In the school, she befriends Minton (Chatchawit Techarukpong), a sweet, flirty, genuine boy and a rude, rowdy, bad boy, Zero (Jirakit Thawornwong), who always creates troubles. She faces new problems related to social life. But one fine day she is forced to remove her box and everyone sees that she is pretty. Minton and Zero confess their love to her, but whom will she choose?\n", "What I've observed when kids watch my program is they become pretty uncomfortable ... People cover up their faces. They can't look ... They feel sick to their stomach. But I think the most visible thing is their facial expression or the verbal utterances they make – gasps in the audience ... I want that shock value to be there. I want to make an impact that lasts with these people. I want them to not forget what they've seen.\n" ]

[ "A water well is a mechanism for bringing groundwater to the surface by drilling or digging and bringing it up to the surface with a pump or by hand using buckets or similar devices. The first historical instance of water wells was in the 52nd century BC in modern-day Austria. Today, wells are used all over the world, from developing nations to suburbs in the United States.\n", "There are three main types of wells, shallow, deep, and artesian. Shallow wells tap into unconfined aquifers, and are, generally, shallow, less than 15 meters deep. Shallow wells have a small diameter, usually less than 15 centimeters. Deep wells access confined aquifers, and are always drilled by machine. All deep wells bring water to the surface using mechanical pumps. In artesian wells, water flows naturally without the use of a pump or some other mechanical device. This is due the top of the well being located below the water table.\n", "Wells are constructed for use in developing nations, as well as for use in developed nations in places which are not connected to a city water system. Wells must be designed and maintained to uphold the integrity of the aquifer, and to prevent contaminants from reaching the groundwater. Controversy arises in the use of groundwater when its usage impacts surface water systems, or when human activity threatens the integrity of the local aquifer system.\n", "A well is an excavation or structure created in the ground by digging, driving, or drilling to access liquid resources, usually water. The oldest and most common kind of well is a water well, to access groundwater in underground aquifers. The well water is drawn up by a pump, or using containers, such as buckets, that are raised mechanically or by hand. Water can also be injected back into the aquifer through the well. Wells were first constructed at least eight thousand years ago and historically vary in construction from a simple scoop in the sediment of a dry watercourse to the qanats of Iran, and the stepwells and sakiehs of India. Placing a lining in the well shaft helps create stability, and linings of wood or wickerwork date back at least as far as the Iron Age.\n", "The earliest wells were water wells, shallow pits dug by hand in regions where the water table approached the surface, usually with masonry or wooden walls lining the interior to prevent collapse. Modern drilling techniques utilize long drill shafts, producing holes much narrower and deeper than could be produced by digging.\n", "Underwater tunnels are either bored or immersed: tunnel boring is common for deepwater tunnels longer than 4 or , while immersion is commonly used for tunnels which cross relatively shallow waters. Immersion involves dredging a trench across the seafloor, laying a foundation bed of sand or gravel, and then lowering precast concrete tunnel sections into the excavation and covering it with a protective layer of backfill several metres thick.\n", "An underground crawl space (as the name implies) is a type of basement in which one cannot stand up—the height may be as little as one foot (30 cm), and the surface is often soil. Crawl spaces offer a convenient access to pipes, substructures and a variety of other areas that may be difficult or expensive to access otherwise. While a crawl space cannot be used as living space, it can be used as storage, often for infrequently used items. Care must be taken in doing so, however, as water from the damp ground, water vapour (entering from crawl space vents), and moisture seeping through porous concrete can create a perfect environment for mould/mildew to form on any surface in the crawl space, especially cardboard boxes, wood floors and surfaces, drywall and some types of insulation.\n" ]

[ "Native American cultures are numerous and diverse. Though some neighboring cultures hold similar beliefs, others can be quite different from one another. The most common myths are the creation myths, that tell a story to explain how the earth was formed, and where humans and other beings came from. Others may include explanations about the sun, moon, constellations, specific animals, seasons, and weather. This is one of the ways that many tribes have kept, and continue to keep, their cultures alive; these stories are not told simply for entertainment, but as a way of preserving and transmitting the nation, tribe or band's particular beliefs, history, customs, spirituality and traditional way of life. \"[S]tories not only entertain but also embody Native behavioral and ethical values.\"\n", "The notion of \"tribe\" in Apache cultures is very weakly developed; essentially it was only a recognition \"that one owed a modicum of hospitality to those of the same speech, dress, and customs.\" The six Apache tribes had political independence from each other and even fought against each other. For example, the Lipan once fought against the Mescalero.\n", "The mythology of the Miwok Native Americans are myths of their world order, their creation stories and 'how things came to be' created. Miwok myths suggest their spiritual and philosophical world view. In several different creation stories collected from Miwokan people, Coyote was seen as their ancestor and creator god, sometimes with the help of other animals, forming the earth and making people out of humble materials like feathers or twigs.\n", "Cryptozoologists suggest that the Native American folklore can be explained by prehistoric mammals such as hyaenodons, dire wolves, members of the subfamily Borophaginae (hyena-like dogs), or \"Chasmaporthetes\" (the only true American hyena).\n", "Early European American scholar described the Native Americans (as well as any other tribal society) as having a society dominated by clans or gentes (in the Roman model) before tribes were formed. There were some common characteristics:\n", "Native American culture is very much involved with mythology. They used mythology to tell great stories about their lives and the lives of their ancestors. They also would use stories to explained the supernatural connection between humans and certain animals. One very important aspect of the Native American mythology was the buffalo, also known as the Bison. The buffalo was seen as a potential food source to the Native Americans but were too hard to hunt especially before the invention of guns so instead they were used in many rituals that included dancing and prayer. Most of the rituals were related to the difficulty of the catching and the killing of the buffalo.\n", "Native American tribes have maintained numerous mythologies regarding deities throughout their histories. Native American belief systems include many sacred narratives. Such spiritual stories are deeply based in Nature and are rich with the symbolism of seasons, weather, plants, animals, earth, water, sky & fire. Deities play a large part in these narratives.\n" ]

[ "As the Cold War flared up in the 1950s, Soviet Premier Nikita Khrushchev realized that the Soviet Union needed its own equivalent to Captain America. Khrushchev chose Alexi Shostakov over Yuri Gagarin who would later become the first man in space. The KGB faked his death and trained him in secret, keeping his survival a secret from Natasha. He became a master of hand-to-hand combat and a highly skilled athlete. In addition, he carried a throwing disc on his belt which could be used against an opponent. Magnetic force returned the disc after throwing. The disc had the yellow hammer and sickle symbol on it and his costume was red with a star on his chest to symbolise the Soviet flag. While the Black Widow became disillusioned with her KGB masters and defected to the United States, the Red Guardian remained loyal and became more ruthless and vindictive. The Red Guardian battled the Avengers with his Chinese ally Colonel Ling, to protect a Communist Chinese secret weapon located at a secret military base at an unrevealed location in the People's Republic of China, encountering the Black Widow and Captain America (Steve Rogers). When the Black Widow noticed \"something familiar\" about him, he revealed his identity to her. He was shot and mortally wounded minutes later by Colonel Ling while saving the lives of the Black Widow and Captain America. He was buried under molten lava when the laser blast caused the eruption of a long-dormant volcano.\n", "The Soviet Union was a sports empire, and many prominent Russian sportspeople found great acclaim and rewards for their skills in the United States. Examples are Alexander Ovechkin, Alexandre Volchkov, and Andrei Kirilenko. Nastia Liukin was born in Moscow, but came to America with her parents as a young child, and developed as a champion gymnast in the U.S. Maria Sharapova moved to the United States at the age of seven.\n", "Captain America traveled to the Soviet Union to find out who perpetrated the attacks. The three dying heroes projected their spirits into a creature of animated darkforce, using Darkstar's powers, and attacked Captain America and the Supreme Soviets. The animated bear-like monster absorbed the Supreme Soviets, and tried to use their life-forces to restore the Soviet Super-Soldiers. Captain America persuaded the spirits not to kill the others, and the black shape disappeared. Captain America returned home to discover the three Russian heroes making a rapid recovery.\n", "Despite the loss, the USSR remained the pre-eminent power in Olympic hockey until its 1991 break-up. The Soviet team did not lose a World Championship game until 1985 and did not lose to the United States again until 1991. Throughout the 1980s, NHL teams continued to draft Soviet players in hopes of enticing them to eventually play in North America. Soviet emigrant Victor Nechayev made a brief appearance with the Los Angeles Kings in the 1982–83 season, and during the 1988–89 season, the Soviet Ice Hockey Federation agreed to let veteran Sergei Pryakhin join the Calgary Flames.\n", "When the Soviet Super-Soldiers refused as a matter of conscience to take orders from the Soviet government anymore, the government organized the Supreme Soviets, a new militant team which would be loyal to the Soviet Union. Crimson Dynamo joined this team after being expelled from the Soviet Super-Soldiers when his teammates learned of his loyalty to the government that had betrayed them. When the Soviet government tried to force the remaining Soviet Super-Soldiers (Vanguard, Ursa Major, Darkstar) to enlist in the new Supreme Soviets team, the three instead decided to defect to the United States. Captain America allowed them to stay at an Avengers base while they applied for political asylum.\n", "Sorensen was one of the consultants who brought American know-how to the USSR during this era, before the Cold War made such exchanges unthinkable. As the Soviet Union developed and grew in power, both sides, the Soviets and the Americans, chose to ignore or deny the contribution that American ideas and expertise had made: the Soviets because they wished to portray themselves as creators of their own destiny and not indebted to a rival, and the Americans because they did not wish to acknowledge their part in creating a powerful communist rival. Anti-communism had always enjoyed widespread popularity in America, and anti-capitalism in Russia, but after World War II, they precluded any admission by either side that technologies or ideas might be either freely shared or clandestinely stolen.\n", "In exhibitions that year, Soviet club teams went 5–3–1 against National Hockey League (NHL) teams, and a year earlier, the Soviet national team had routed the NHL All-Stars 6–0 to win the Challenge Cup. In 1979–80, virtually all the top North American players were Canadians, although the number of U.S.-born professional players had been on the rise throughout the 1970s. The 1980 U.S. Olympic team featured several young players who were regarded as highly promising, and some had signed contracts to play in the NHL immediately after the tournament.\n" ]

[ "Some animals engage in matutinal searching flights to find mates early in the morning. It is thought that this is adaptive because it increases the chance of finding mates, and reduces competition for mates (i.e., by flying directly to a potential mate before it has a chance to find other mates). This is supported by the mating behaviour of certain socially monogamous birds. For example, female superb fairywrens (\"Malurus cyaneus)\", are a monogamous bird that perform extra-pair copulations during matutinal hours. One explanation for the prevalence of extra-pair copulation is that it enhances the gene pool of the species' offspring. This activity is most often seen matutinally because they: (1) can avoid being followed by their monogamous partner in the dimly-lit early morning, (2) males are more likely to be present in their territory during these hours, and (3) males are more likely to have a higher quantity of sperm in the early morning. These points may apply to how matutinal mating is adaptive in other species.\n", "Mate choice is one of the primary mechanisms under which evolution can occur. It is characterized by a “selective response by animals to particular stimuli” which can be observed as behavior. In other words, before an animal engages with a potential mate, they first evaluate various aspects of that mate which are indicative of quality—such as the resources or phenotypes they have—and evaluate whether or not those particular trait(s) are somehow beneficial to them. The evaluation will then incur a response of some sort.\n", "When animals choose mates, traits such as signalling are subject to evolutionary pressure. For example, the male gray tree frog, \"Hyla versicolor\", produces a call to attract females. Once a female chooses a mate, this selects for a specific style of male calling, thus propagating a specific signalling ability. The signal can be the call itself, the intensity of a call, its variation style, its repetition rate, and so on. Various hypotheses seek to explain why females would select for one call over the other. The sensory exploitation hypothesis proposes that pre-existing preferences in female receivers can drive the evolution of signal innovation in male senders, in a similar way to the hidden preference hypothesis which proposes that successful calls are better able to match some 'hidden preference' in the female. Signallers have sometimes evolved multiple sexual ornaments, and receivers have sometimes evolved multiple trait preferences.\n", "Sexual selection concerns the mating choices of humans and other animals. These choices are based upon the principles of Charles’ Darwin's theory of Natural Selection, in which traits that increase likelihood of survival are chosen for, and organisms that are deemed most fit are sexually selected for. Traits that function as fitness indicators are those revealing potential benefits rooted in genetic qualities. When choosing mates, animals go for those with better fitness indicators to ensure better benefits for them and their offspring. These indicators can be morphological traits as well as behavioral traits. A peacock's tail and a nightingale's courtship songs are examples of the two traits. Sexual-selection studies have shown that male height, muscularity, and facial structure, and female breasts and buttocks are important indicators. Previously, Crow and Randall partially integrated the idea of sexual selection in their models to explain schizophrenia.\n", "The first evidence for time-place learning in animals came from studies in the 1930s on honeybees, which could be trained to visit two different feeders, one in the morning and the other in the afternoon. Subsequent work in the 1980s showed that only a few individuals in the colony were able to learn that task, and did so with more precision for the morning than for the afternoon feeding. Honeybees can also be trained to recognize one visual pattern to obtain food in the morning, and another pattern to get food in the afternoon; when presented with both patterns simultaneously, the same bees choose the \"morning\" pattern in the morning and the \"afternoon\" pattern in the afternoon.\n", "Culture heavily influences mate choice, but there are evolutionary concepts that underpin research into mate choice. Honest signals are characteristics of an individual that are assumed to be true indicators of health and fecundity. Honest signals guide sexual selection, the process by which certain traits are picked by the potential mate and then proliferate throughout a species. Human cultures vary on what is considered to be a desirable honest signal. Emphasis on wealth, aesthetics, religious affiliation, and lineage, to name a few examples, are all used in different cultures as ways to choose a mate.\n", "When an animal is given a task to complete, they are almost always more successful after observing another animal doing the same task before them. Experiments have been conducted on several different species with the same effect: animals can learn behaviors from peers. However, there is a need to distinguish the propagation of behavior and the stability of behavior. Research has shown that social learning can spread a behavior, but there are more factors regarding how a behavior carries across generations of an animal culture.\n" ]

[ "Fever, also known as pyrexia and febrile response, is defined as having a temperature above the normal range due to an increase in the body's temperature set point. There is not a single agreed-upon upper limit for normal temperature with sources using values between . The increase in set point triggers increased muscle contractions and causes a feeling of cold. This results in greater heat production and efforts to conserve heat. When the set point temperature returns to normal, a person feels hot, becomes flushed, and may begin to sweat. Rarely a fever may trigger a febrile seizure. This is more common in young children. Fevers do not typically go higher than .\n", "A fever occurs when the core temperature is set higher, through the action of the pre-optic region of the anterior hypothalamus. For example, in response to a bacterial or viral infection, certain white blood cells within the blood will release pyrogens which have a direct effect on the anterior hypothalamus, causing body temperature to rise, much like raising the temperature setting on a thermostat.\n", "With fever, the body's core temperature rises to a higher temperature through the action of the part of the brain that controls the body temperature; with hyperthermia, the body temperature is raised without the influence of the heat control centers.\n", "The hypothalamus functions as a type of thermostat for the body. It sets a desired body temperature, and stimulates either heat production and retention to raise the blood temperature to a higher setting or sweating and vasodilation to cool the blood to a lower temperature. All fevers result from a raised setting in the hypothalamus; elevated body temperatures due to any other cause are classified as hyperthermia. Rarely, direct damage to the hypothalamus, such as from a stroke, will cause a fever; this is sometimes called a \"hypothalamic fever\". However, it is more common for such damage to cause abnormally low body temperatures.\n", "The \"temperature\" component is caused by water drawing heat away from the body and causing vasoconstriction of the cutaneous blood vessels within the body to conserve heat. The body detects an increase in the blood pressure and inhibits the release of vasopressin (also known as antidiuretic hormone (ADH)), causing an increase in the production of urine. The \"pressure\" component is caused by the hydrostatic pressure of the water directly increasing blood pressure. Its significance is indicated by the fact that the temperature of the water does not substantially affect the rate of diuresis. Partial immersion of only the limbs does not cause increased urination. Thus, the hand in warm water trick (immersing the hand of a sleeping person in water to make him/her urinate) has no support from the mechanism of immersion diuresis. On the other hand, sitting up to the neck in a pool for a few hours clearly increases the excretion of water, salts, and urea.\n", "Fever is a regulated elevation of the set point of core temperature in the hypothalamus, caused by circulating pyrogens produced by the immune system. To the subject, a rise in core temperature due to fever may result in feeling cold in an environment where people without fever do not.\n", "Uhthoff's phenomenon (also known as Uhthoff's syndrome, Uhthoff's sign, and Uhthoff's symptom) is the worsening of neurologic symptoms in multiple sclerosis (MS) and other neurological, demyelinating conditions when the body gets overheated from hot weather, exercise, fever, or saunas and hot tubs. It is possibly due to the effect of increased temperature on nerve conduction. With an increased body temperature, nerve impulses are either blocked or slowed down in a damaged nerve but once the body temperature is normalized, signs and symptoms may disappear or improve.\n" ]

[ "In the Middle Ages, blinding was used as a penalty for treason or as a means of rendering a political opponent unable to rule and lead an army in war. Byzantine general Belisarius ( - 565) is said to have been blinded at the order of the Emperor Justinian. Vazul (before 997 – 1031/1032) of the Hungarian royal House of Árpád was blinded at the order either of his cousin King Stephen I or of his queen, Gisela.\n", "In the Byzantine Empire and many other historical societies, blinding was accomplished by gouging out the eyes, sometimes using a hot poker, and by pouring a boiling substance, such as vinegar, on them. \n", "Blinding has been used as an act of vengeance and torture in some instances, to deprive a person of a major sense by which they can navigate or interact within the world, act fully independently, and be aware of events surrounding them. An example from the classical realm is Oedipus, who gouges out his own eyes after realizing that he fulfilled the awful prophecy spoken of him. Having crushed the Bulgarians, the Byzantine Emperor Basil II blinded as many as 15,000 prisoners taken in the battle, before releasing them. Contemporary examples include the addition of methods such as acid throwing as a form of disfigurement.\n", "Blinding as a form of punishment hails from very ancient times. Blinding specifically as a form of torture was recorded in ancient Persia. A corrosive chemical, typically slaked lime, was contained in a pair of cups with decaying bottoms, \"e.g.\", of paper. The cups were strapped in place over the prisoner's eyes as they were bound in a chair. The slowly draining corrosive agent from the cups eventually ate away at the eyeballs.\n", "The blinding of Zbigniew caused a strong negative reaction among Bolesław's subjects. Unlike blinding in the east, blinding in medieval Poland was not accomplished by burning the eyes out with a red hot iron rod or knife, but a much more brutal technique was employed in which the condemned's eyes were pried out using special pliers. The convict was then made to open his eyes and if they did not do so, their eyelids were also removed.\n", "In cryptography, blinding is a technique by which an agent can provide a service to (i.e., compute a function for) a client in an encoded form without knowing either the real input or the real output. Blinding techniques also have applications to preventing side-channel attacks on encryption devices.\n", "Blinding can also be used to prevent certain side-channel attacks on asymmetric encryption schemes. Side-channel attacks allow an adversary to recover information about the input to a cryptographic operation, by measuring something other than the algorithm's result, e.g., power consumption, computation time, or radio-frequency emanations by a device. Typically these attacks depend on the attacker knowing the characteristics of the algorithm, as well as (some) inputs. In this setting, blinding serves to alter the algorithm's input into some unpredictable state. Depending on the characteristics of the blinding function, this can prevent some or all leakage of useful information. Note that security depends also on the resistance of the blinding functions themselves to side-channel attacks.\n" ]

[ "Although the first sea engagement of the war, the Battle of the Lipari Islands in 260 BC, was a defeat for Rome, the forces involved were relatively small. Through the use of the \"corvus\", the fledgling Roman navy under Gaius Duilius won its first major engagement later that year at the Battle of Mylae. During the course of the war, Rome continued to be victorious at sea: victories at Sulci (258 BC) and Tyndaris (257 BC) were followed by the massive Battle of Cape Ecnomus, where the Roman fleet under the consuls Marcus Atilius Regulus and Lucius Manlius inflicted a severe defeat on the Carthaginians. This string of successes allowed Rome to push the war further across the sea to Africa and Carthage itself. Continued Roman success also meant that their navy gained significant experience, although it also suffered a number of catastrophic losses due to storms, while conversely, the Carthaginian navy suffered from attrition.\n", "The Roman navy was traditionally considered less important, although it remained vital for the transportation of supplies and troops, also during the great purge of pirates from the Mediterranean sea by Pompey the Great in the 1st century BC. Most of Rome's battles occurred on land, especially when the Empire was at its height and all the land around the Mediterranean was controlled by Rome.\n", "A small navy had operated at a fairly low level after the Second Samnite War, but it was massively upgraded during this period, expanding from a few primarily river- and coastal-based patrol craft to a full maritime unit. After a period of frenetic construction, the navy mushroomed to a size of more than 400 ships on the Carthaginian pattern. Once completed, it could accommodate up to 100,000 sailors and embarked troops for battle. The navy thereafter declined in size. This was partially because a pacified Roman Mediterranean called for little naval policing, and partially because the Romans chose to rely during this period on ships provided by Greek cities, whose peoples had greater maritime experience.\n", "Under Emperor Diocletian (284–305), the navy's strength reportedly increased from 46,000 men to 64,000 men, a figure that represents the numerical peak of the late Roman navy. The Danube Fleet (\"Classis Histrica\") with its attendant legionary flotillas is still well attested in the \"Notitia Dignitatum\", and its increased activity is commented upon by Vegetius (\"De Re Militari\", IV.46). In the West, several fluvial fleets are mentioned, but the old standing praetorian fleets had all but vanished (\"De Re Militari\", IV.31) and even the remaining western provincial fleets appear to have been seriously understrength and incapable of countering any significant barbarian attack. In the East, the Syrian and Alexandrian fleets are known from legal sources to have still existed in c. 400 (\"Codex Justinianus\", XI.2.4 & XI.13.1), while a fleet is known to have been stationed at Constantinople itself, perhaps created out of the remnants of the praetorian fleets. In 400 it was sufficient to slaughter a large number of Goths who had built rafts and tried to cross the strip of sea that separates Asia from Europe. Its size, however, is unknown, and it does not appear in the \"Notitia\".\n", "In total the Roman fleet had 140,000 men on board: rowers, other crew, marines and soldiers. The number of Carthaginians is less certainly known, but was estimated by Polybius at 150,000 and most modern historians broadly support this. If these figures are approximately correct, then the Battle of Ecnomus is possibly the largest naval battle of all time, by number of combatants involved.\n", "Information suggests that by the time of the late Empire (350 AD), the Roman navy comprised several fleets including warships and merchant vessels for transportation and supply. Warships were oared sailing galleys with three to five banks of oarsmen. Fleet bases included such ports as Ravenna, Arles, Aquilea, Misenum and the mouth of the Somme River in the West and Alexandria and Rhodes in the East. Flotillas of small river craft (\"classes\") were part of the \"limitanei\" (border troops) during this period, based at fortified river harbors along the Rhine and the Danube. That prominent generals commanded both armies and fleets suggests that naval forces were treated as auxiliaries to the army and not as an independent service. The details of command structure and fleet strengths during this period are not well known, although fleets were commanded by prefects.\n", "The navy consisted of a wide variety of different classes of warships, from heavy polyremes to light raiding and scouting vessels. Unlike the rich Hellenistic Successor kingdoms in the East however, the Romans did not rely on heavy warships, with quinqueremes (Gk. \"pentērēs\"), and to a lesser extent quadriremes (Gk. \"tetrērēs\") and triremes (Gk. \"triērēs\") providing the mainstay of the Roman fleets from the Punic Wars to the end of the Civil Wars. The heaviest vessel mentioned in Roman fleets during this period was the hexareme, of which a few were used as flagships. Lighter vessels such as the liburnians and the hemiolia, both swift types invented by pirates, were also adopted as scouts and light transport vessels.\n" ]

[ "Melanin is a natural pigment produced by cells called melanocytes in a process called melanogenesis. Melanocytes produce two types of melanin: pheomelanin (red) and eumelanin (very dark brown). Melanin protects the body by absorbing ultraviolet radiation. Excessive UV radiation causes sunburn along with other direct and indirect DNA damage to the skin, and the body naturally combats and seeks to repair the damage and protect the skin by creating and releasing further melanin into the skin's cells. With the production of the melanin, the skin color darkens. The tanning process can be triggered by natural sunlight or by artificial UV radiation, which can be delivered in frequencies of UVA, UVB, or a combination of both. The intensity is commonly measured by the UV Index.\n", "Melanin is the main substance responsible for the color of the skin. Melanin in synthesized in melanosomes which are organelles produced in melanocytes, cells dedicated to this function that are present in the skin, hair follicles, and other structures of the body. The synthesis of melanin, also called \"melanogenesis\" and \"melanization\", involves a chain of enzyme-catalyzed chemical reactions and non-enzyme-catalyzed reactions. The main precursor to melanin is -tyrosine. The first step of melanogenesis is the conversion of -tyrosine to -DOPA; this is the first and rate-limiting step and is catalyzed by the enzyme tyrosinase (TYR). Other enzymes involved in the synthesis include tyrosinase-related protein 1 (TRP1) and tyrosinase-related protein 2 (TRP2), also known as \"dopachrome tautomerase\" (DCT). -tyrosine is taken by the melanocytes from the intercellular medium, then transported to the melanosomes. -tyrosine is also synthesized within the melanocytes from -phenylalanine by the enzyme phenylalanine hydroxylase (PAH).\n", "In humans, melanin is the primary determinant of skin color. It is also found in hair, the pigmented tissue underlying the iris of the eye, and the stria vascularis of the inner ear. In the brain, tissues with melanin include the medulla and pigment-bearing neurons within areas of the brainstem, such as the locus coeruleus and the substantia nigra. It also occurs in the zona reticularis of the adrenal gland.\n", "Melanin is an endogenous pigment synthesized by melanocytes that are located in the basal layer of epithelium. Melanin is then transferred to keratinocytes in melanosomes. Nevus cells in the skin and oral mucosa also produce melanin. Oral melanosis can present as black, gray, blue or brown lesions depending on the site and amount of melanin deposition in tissues.\n", "Melanin is a compound found in plants, animals, and protists, and is derived from the amino acid tyrosine. Melanin is a photoprotectant, absorbing the DNA-damaging ultraviolet radiation of the sun. Vertebrates have melanin in their skin and hair, feathers, or scales. They also have two layers of pigmented tissue in the eye: the stroma, at the front of the iris, and the iris pigment epithelium, a thin but critical layer of pigmented cells at the back of the iris. Melanin is also present in the inner ear, and is important for the early development of the auditory system. Melanin is also found in parts of the brain and adrenal gland.\n", "Melanin itself is the product of a specialized cell, the melanocyte, which is found in each hair follicle, from which the hair grows. As hair grows, the melanocyte injects melanin into the hair cells, which contain the protein keratin and which makes up our hair, skin, and nails. As long as the melanocytes continue injecting melanin into the hair cells, the hair retains its original color. At a certain age, however, which varies from person to person, the amount of melanin injected is reduced and eventually stops. The hair, without pigment, turns grey and eventually white. The reason for this decline of production of melanocytes is uncertain. In the February 2005 issue of \"Science\", a team of Harvard scientists suggested that the cause was the failure of the melanocyte stem cells to maintain the production of the essential pigments, due to age or genetic factors, after a certain period of time. For some people, the breakdown comes in their twenties; for others, many years later. According to the site of the magazine \"Scientific American\", \"Generally speaking, among Caucasians 50 percent are 50 percent grey by age 50.\" Adult male gorillas also develop silver hair but only on their backs, see Physical characteristics of gorillas.\n", "Both the amount and type of melanin produced is controlled by a number of genes that operate under incomplete dominance. One copy of each of the various genes is inherited from each parent. Each gene can come in several alleles, resulting in the great variety of human skin tones. Melanin controls the amount of ultraviolet (UV) radiation from the sun that penetrates the skin by absorption. While UV radiation can assist in the production of vitamin D, excessive exposure to UV can damage health.\n" ]

[ "Human eyes have color receptors known as cone cells, of which there are three types. In some cases, one is missing or faulty, which can cause color blindness, including the common inability to distinguish red and yellow from green, known as deuteranopia or redgreen color blindness. Green is restful to the eye. Studies show that a green environment can reduce fatigue.\n", "Retinitis pigmentosa is an inherited disease which leads to progressive night blindness and loss of peripheral vision as a result of photoreceptor cell death. Most people who suffer from RP are born with rod cells that are either dead or dysfunctional, so they are effectively blind at nighttime, since these are the cells responsible for vision in low levels of light. What follows often is the death of cone cells, responsible for color vision and acuity, at light levels present during the day. Loss of cones leads to full blindness as early as five years old, but may not onset until many years later. There have been multiple hypotheses about how the lack of rod cells can lead to the death of cone cells. Pinpointing a mechanism for RP is difficult because there are more than 39 genetic loci and genes correlated with this disease. In an effort to find the cause of RP, there have been different gene therapy techniques applied to address each of the hypotheses.\n", "When the entire activity of the eye is completely qualitatively partitioned, the color and its spectrum (afterimage) appear with maximum energy as being vivid, bright, dazzling, and brilliant. If the division is not total, however, part of the retina can remain undivided. A union of the quantitative intensive division with the qualitative division of the retina occurs. If the remainder is active, then the color and its spectrum are lost as they fade into white. If the remainder is inactive, then the color and its spectrum are lost as they darken into black. If the remainder is only partially inactive, then the color loses its energy by mixing with gray.\n", "Because hemoglobin is a darker red when it is not bound to oxygen (deoxyhemoglobin), as opposed to the rich red color that it has when bound to oxygen (oxyhemoglobin), when seen through the skin it has an increased tendency to reflect blue light back to the eye. In cases where the oxygen is displaced by another molecule, such as carbon monoxide, the skin may appear 'cherry red' instead of cyanotic. Hypoxia can cause premature birth, and injure the liver, among other deleterious effects.\n", "The eye's lens is normally tinted yellow. This reduces the intensity of blue light reaching the retina. When the lens is removed because of cataract, it is usually replaced by an artificial intraocular lens; these artificial lenses are clear, allowing more intense blue light than usual to fall on the retina, leading to the phenomenon.\n", "The eyes are never completely at rest. They make fast random jittering movements even when we are fixated on one point. The reason for this random movement is related to the photoreceptors and the ganglion cells. It appears that a constant visual stimulus can make the photoreceptors or the ganglion cells become unresponsive; on the other hand a changing stimulus will not. Therefore, the random eye movement constantly changes the stimuli that fall on the photoreceptors and the ganglion cells, making the image more clear.\n", "Progressive retinal atrophy (PRA) is a disease that causes nerve cells at the back of the eye to degenerate. The condition usually begins in older pets and can lead to blindness. PRA represents a group of inherited eye diseases characterized by abnormal development or premature degeneration of the retina. Two types of photoreceptors occur in the retina, light-sensitive rods and cones. They are responsible for detecting light and converting it into an electrical signal that travels to the brain. When the photoreceptor cells deteriorate, vision is lost because the animal has no way to generate an image from the light reaching the retina. Puppies are usually blind before one year of age.\n" ]

[ "In surgery, control of bleeding is achieved with the use of laser or sonic scalpels, minimally invasive surgical techniques, electrosurgery and electrocautery, low central venous pressure anesthesia (for select cases), or suture ligation of vessels. Other methods include the use of blood substitutes, which at present do not carry oxygen but expand the volume of the blood to prevent shock. Blood substitutes which do carry oxygen, such as PolyHeme, are also under development. Many doctors view acute normovolemic hemodilution, a form of storage of a patient's own blood, as a pillar of \"bloodless surgery\" but the technique is not an option for patients who refuse autologous blood transfusions.\n", "It is not uncommon for surgical drains (see Drain (surgery)) to be required to remove blood or fluid from the surgical wound during recovery. Mostly these drains stay in until the volume tapers off, then they are removed. These drains can become clogged, leading to abscess.\n", "In the healing of wounds, autolytic debridement can be a helpful process, where the body breaks down and liquifies dead tissue so that it can be washed or carried away. Modern wound dressings that help keep the wound moist can assist in this process.\n", "Blood products, non-blood products and combinations are used in fluid replacement, including colloid and crystalloid solutions. Colloids are increasingly used but they are more expensive than crystalloids. A systematic review found no evidence that resuscitation with colloids, instead of crystalloids, reduces the risk of death in patients with trauma, burns or following surgery.\n", "This type of bleeding occurs during/immediately after extraction, because true haemostasis has not been achieved. It is usually controlled by conventional techniques, such as applying pressure packs or haemostatic agents onto the wound.\n", "Even after treatment, it can take months for the body to clear all of the blood from the vitreous. In cases of vitreous hemorrhage due to detached retina, long-standing vitreous hemorrhage with a duration of more than 2–3 months, or cases associated with rubeosis iridis or glaucoma, a vitrectomy may be necessary to remove the standing blood in the vitreous.\n", "During surgery, techniques are utilized to reduce or eliminate exposure to allogeneic blood. For example, electrocautery, which is a technique utilized for surgical dissection, removal of soft tissue and sealing blood vessels, can be applied to a variety of procedures. During surgical procedures that are expected to have significant blood loss, blood that is lost during surgery can be collected, filtered, washed and given back to the patient. This procedure is known as \"Intraoperative Blood Salvage.\" Pharmacologic agents, for example tranexamic acid, can also be utilized to minimize blood loss. Another technique, acute normovolemic hemodilution\" involves the collection of a selected calculated volume of autologous blood in collection bags prior to the start of surgery with the simultaneous replacement of an equal volume of asanguinous fluid. Since the patient's blood is now diluted, blood lost during the surgical procedure, i.e. by hemorrhage, contains smaller amounts of red blood cells. The collected autologous blood product, which contains red blood cells, platelets and coagulation factors, is reinfused at the end of the surgery. When all of these therapies are combined, blood loss is greatly reduced which correspondingly reduces or averts the potential for allogeneic blood transfusion. \n" ]

[ "Most battery voltage testers and chargers that can also test nine-volt need another snap clip to hold the battery, while cylindrical batteries often share a holder that may be adjustable in size. Because of the proximity of the positive and negative terminals at the top of the battery and relatively low current of most common batteries, one informal method of testing voltage is to place the two terminals across a tongue. A strong tingle would indicate a battery with a strong charge, the absence, a discharged battery. While there have been stories circulating of unfortunate outcomes, the process is rarely dangerous under normal circumstances, though it may be unpleasant.\n", "The primary mechanism of injury with button battery ingestions is the generation of hydroxide ions, which cause severe chemical burns, at the anode. This is an electrochemical effect of the intact battery, and does not require the casing to be breached or the contents released. Complications include oesophageal strictures, tracheo-oesophageal fistulas, vocal cord paralysis, aorto-oesophageal fistulas, and death. The majority of ingestions are not witnessed; presentations are non-specific; battery voltage has increased; the 20 to 25 mm button battery size are more likely to become lodged at the cricopharyngeal junction; and severe tissue damage can occur within 2 hours. The 3 V, 20 mm CR2032 lithium battery has been implicated in many of the complications from button battery ingestions by children of less than 4 years of age. While the only cure for an esophageal impaction is endoscopic removal, a 2018 study out of Children's Hospital of Philadelphia by Rachel R. Anfang and colleagues found that early and frequent ingestion of honey or sucralfate suspension prior to the battery's removal can reduce the injury severity to a significant degree. As a result, US-based National Capital Poison Center (Poison Control) recommends the use of honey and sucralfate after known or suspected ingestions to reduce the risk and severity of injury to esophagus, and consequently its nearby structures. Button batteries can also cause significant necrotic injury when stuck in the nose or ears. Prevention efforts in the US by the National Button Battery Task force in cooperation with industry leaders have led to changes in packaging and battery compartment design in electronic devices to reduce a child's access to these batteries. However, there still is a lack of awareness across the general population and medical community to its dangers. Central Manchester University Hospital Trust warns that \"a lot of doctors are unaware that this can cause harm\".\n", "If the battery is over-filled with water and electrolyte, thermal expansion can force some of the liquid out of the battery vents onto the top of the battery. This solution can then react with the lead and other metals in the battery connector and cause corrosion.\n", "There is a risk of electric shock when touching the parts of the system under voltage by the body joint. As a countermeasure, so-called protective conductors and residual current circuit breakers are used in electrical engineering.\n", "If the arcs from the high voltage terminal strike the bare skin, they can cause deep-seated burns called \"RF burns\". This is often avoided by allowing the arcs to strike a piece of metal held in the hand, or a thimble on a finger, instead. The current passes from the metal into the person's hand through a wide enough surface area to avoid causing burns. Often no sensation is felt, or just a warmth or tingling.\n", "In the electric eel, some 5,000 to 6,000 stacked electroplaques can make a shock up to 600 volts and up to 1 ampere of current. This level of current is reportedly enough to produce a brief and painful numbing shock likened to a stun gun discharge, which due to the voltage can be felt for some distance from the fish; this is a common risk for aquarium caretakers and biologists attempting to handle or examine electric eels.\n", "Battery contacts are the most important part of the design and require serious consideration. Since batteries are nickel-plated, it is recommended the contacts be nickel-plated to prevent galvanic corrosion between dissimilar metals. Battery contacts may be fixed contacts, flexible contacts, or some combination of the two.\n" ]

[ "Automatism, in toxicology, refers to a tendency to take a drug over and over again, forgetting each time that one has already taken the dose. This can lead to a cumulative overdose. A particular example is barbiturates which were once commonly used as hypnotic (sleep inducing) drugs. Among the current hypnotics, benzodiazepines, especially midazolam might show marked automatism, possibly through their intrinsic anterograde amnesia effect. Barbiturates are known to induce hyperalgesia, i.e. aggravation of pain and for sleeplessness due to pain, if barbiturates are used, more pain and more disorientation would follow leading to drug automation and finally a \"pseudo\"suicide. Such reports dominated the medical literature of 1960s and 1970s; a reason replacing the barbiturates with benzodiazepines when they became available.\n", "Use of stimulants may cause the body to significantly reduce its production of natural body chemicals that fulfill similar functions. Once the effect of the ingested stimulant has worn off the user may feel depressed, lethargic, confused, and miserable. This is referred to as a \"crash\", and may provoke reuse of the stimulant.\n", "Neural adaptation can occur for other than natural means. Antidepressant drugs, such as those that cause down regulation of β-adrenergic receptors, can cause rapid neural adaptations in the brain. By creating a quick adaptation in the regulation of these receptors, it is possible for drugs to reduce the effects of stress on those taking the medication.\n", "Reducing the dosage of the antipsychotic drugs resulted in gradual improvement in the abnormal posture. In some cases, discontinuing the use of those drugs resulted in complete disappearance of the syndrome. The time it took for the improvement and the disappearance of the syndrome depended on the type of drug being administered or the specific cause of the syndrome itself.\n", "Certain types of drugs affect self-controls. Stimulants, such as methylphenidate and amphetamine, improve inhibitory control in general and are used to treat ADHD. Similarly, depressants, such as alcohol, represent barriers to self-control through sluggishness, slower brain function, poor concentration, depression and disorientation.\n", "Both generations of medication tend to block receptors in the brain's dopamine pathways. Atypicals are less likely than haloperidol — the most widely used typical antipsychotic — to cause extrapyramidal motor control disabilities in patients such as unsteady Parkinson's disease-type movements, body rigidity, and involuntary tremors. However, only a few of the atypicals have been demonstrated to be superior to lesser-used, low-potency first-generation antipsychotics in this regard.\n", "Antipsychotics, such as haloperidol, are sometimes used in addition to benzodiazepines to control agitation or psychosis. Antipsychotics may potentially worsen alcohol withdrawal as they lower the seizure threshold. Clozapine, olanzapine, or low-potency phenothiazines (such as chlorpromazine) are particularly risky; if used, extreme caution is required.\n" ]

[ "In both the play and the film, John Adams sarcastically predicts that Benjamin Franklin will receive from posterity too great a share of credit for the Revolution. \"Franklin smote the ground and out sprang—George Washington. Fully grown, and on his horse. Franklin then electrified them with his magnificent lightning rod and the three of them—Franklin, Washington, and the horse—conducted the entire Revolution all by themselves.\" Adams did make a similar comment about Franklin in April 1790, just after Franklin's death, although the mention of the horse was a humorous twist added by the authors of the musical.\n", "In both the play and the film, John Adams sarcastically predicts that Benjamin Franklin will receive from posterity too great a share of credit for the Revolution. \"Franklin smote the ground and out sprang—George Washington. Fully grown, and on his horse. Franklin then electrified them with his miraculous lightning rod and the three of them—Franklin, Washington, and the horse—conducted the entire Revolution all by themselves.\" Adams did make a similar comment about Franklin in April 1790, just after Franklin's death, although the mention of the horse was a humorous twist added by the authors of the musical.\n", "Benjamin Franklin (1706–1790) was an activist and theorist of American philanthropy. He was much influenced by Daniel Defoe's \"An Essay upon Projects\" (1697) and Cotton Mather's \"Bonifacius: an essay upon the good.\" (1710). Franklin attempted to motivate his fellow Philadelphians into projects for the betterment of the city: examples included the Library Company of Philadelphia (the first American subscription library), the fire department, the police force, street lighting and a hospital. A world-class physicist himself, he promoted scientific organizations including the Philadelphia Academy (1751) – which became the University of Pennsylvania – as well as the American Philosophical Society (1743) to enable scientific researchers from all 13 colonies to communicate.\n", "Beginning in August 1788 when Franklin had returned to Philadelphia, the author says he will not be able to utilize his papers as much as he had expected, since many were lost in the recent Revolutionary War. He has, however, found and quotes a couple of his writings from the 1730s that survived. One is the \"Substance of an intended Creed\" consisting of what he then considered to be the \"Essentials\" of all religions. He had intended this as a basis for a projected sect but, Franklin says, did not pursue the project.\n", "By the time Franklin arrived in Philadelphia on May 5, 1775, after his second mission to Great Britain, the American Revolution had begun—with fighting between colonials and British at Lexington and Concord. The New England militia had trapped the main British army in Boston. The Pennsylvania Assembly unanimously chose Franklin as their delegate to the Second Continental Congress. In June 1776, he was appointed a member of the Committee of Five that drafted the Declaration of Independence. Although he was temporarily disabled by gout and unable to attend most meetings of the Committee, Franklin made several \"small but important\" changes to the draft sent to him by Thomas Jefferson.\n", "Historian Pauline Maier argues that this narrative asserted \"... the right of revolution, which was, after all, the right Americans were exercising in 1776\"; and notes that Thomas Jefferson's language incorporated ideas explained at length by a long list of seventeenth-century writers including John Milton, Algernon Sidney, and John Locke and other English and Scottish commentators, all of whom had contributed to the development of the Whig tradition in eighteenth-century Britain.\n", "In 1774 Benjamin Franklin 'took refuge from a political storm' in Williams's house, and became interested in his method of teaching arithmetic. Franklin joined a small club formed at Chelsea by Williams, the manufacturer Thomas Bentley (partner of Josiah Wedgwood), and James \"Athenian\" Stuart. At this club Williams broached the scheme of a society for relieving distressed authors, which Franklin did not encourage him to pursue. It was noted at the club that most of the members, though 'good men', yet 'never went to church'. Franklin regretted the want of 'a rational form of devotion'. To supply this, Williams, with aid from Franklin, drew up a form. It was printed six times before it satisfied its projectors, and was eventually published as \"A Liturgy on the Universal Principles of Religion and Morality\", 1776. It does not contain his reduction of the creed to one article, 'I believe in God. Amen'.\n" ]

[ "Another method for improving memory and retention is imaginative and abstract thinking. Using imagination and thinking abstractly when learning new things are effective ways of improving memory and enabling a great amount of material to be effectively retained. Imagination creates stronger visuals and connections, which can lead to significant improvement in memory and retention. The VAI memory principle: Visualisation, Association and Imagination, improves memory and retention when learning considerably. This principle combines different methods of improving memory and retention to create one comprehensive method for engaging in successful learning.\n", "In 2003, Chu et al. demonstrated that conscious effort and attention is important to overcome context-dependent forgetting. Their research has shown that active processing of the context during the encoding phase is an important factor of successful performance. When actively attending to environmental cues with the goal of using a technique such as the context recall technique, stronger associations are created between the material and the environment. However, if an individual does not actively attend to environmental cues during the encoding phase, such cues may not be easily visualized in the recall phase if a new context is present.\n", "Memory inhibition is a critical component of an effective memory system. While some memories are retained for a lifetime, most memories are forgotten. According to evolutionary psychologists, forgetting is adaptive because it facilitates selectivity of rapid, efficient recollection. For example, a person trying to remember where they parked their car would not want to remember every place they have ever parked. In order to remember something, therefore, it is essential not only to activate the relevant information, but also to inhibit irrelevant information. \n", "Learning and memory go hand-in-hand, as one cannot occur without the other. Learning involves experiences and how they alter the brain, while memory focuses on how those changes in the brain are stored and recalled. Lower socioeconomic status environments yield lower cognitive and intellectual development in children. Since children cannot choose the environments that they are raised in, parental influence can greatly aid or inhibit a child's cognitive development. Low socioeconomic status due to poverty is a leading cause in hindered cognitive development in growing children. A constant inadequate diet throughout early childhood deprives the brain of the nourishment it requires to develop and function successfully. Also affecting cognitive development is access to health care. Families with a low socioeconomic status cannot always afford necessary or beneficial health care for their children, which can hinder brain development, especially in later years when the brain is less likely to self-correct potential risk factors. A lack of intellectual stimulation can also decrease cognitive development in children, which can occur in households with a low income, that cannot afford supplementary activities or programs for their children's developing minds. One of the most dynamic inhibitors of cognitive development by parental influence however, is parental violence and negativity. Children who live in high-risk environments of parental abuse express fluctuations in their ability of attentional skills due to constant fear or safety concerns. Disturbance in attention can decrease both working memory and retrieval of long-term memories. If concentration is disturbed during recall, the memories that surface may be susceptible to reconsolidation, and the false memories that are created, due to lack of concentration, may solidify into inaccurate long-term memories. In a research model that looked at children living in environments of domestic violence and their relationship with memory, researchers found that children exposed to familial trauma displayed a poorer performance of working memory.\n", "Thus there is much support that active recall is better than rereading text for enhancing learning. In fact, Karpicke, et al. (2009) believe that students get \"illusions of competence\" from rereading their notes and textbook. One reason for this illusion is that the text contains all the information, so it is easy to glance over it and feel as if it is known well, when that is not the case at all. Better put: in the text, the cue and corresponding target are both present, which is not the case during testing. The results of their study showed that retrieval as a study strategy is rare among students. They prefer to reread instead. \n", "Further, in cases where it is not possible to have similar learning and testing contexts, individuals who pay conscious attention to cues in the learning environment may produce better results when recalling this information. By doing so, individuals are better able to create a mental image of the original context when trying to recall information in the new testing context—allowing for improved memory retrieval. Further, several contextual cues should be attended to, using more than one sensory system to maximize the number of cues that can help remember information.\n", "The working memory model explains many practical observations, such as why it is easier to do two different tasks (one verbal and one visual) than two similar tasks (e.g., two visual), and the aforementioned word-length effect. Working memory is also the premise for what allows us to do everyday activities involving thought. It is the section of memory where we carry out thought processes and use them to learn and reason about topics.\n" ]

[ "The resulting , a white solid, is highly reactive (by fluorination), easily sublimes (emitting a vapor that behaves as a nearly ideal gas), and is the most volatile compound of uranium known to exist.\n", "Uranium borohydride is the inorganic compound with the empirical formula U(BH). Two polymeric forms are known, as well as a monomeric derivative that exists in the gas phase. Because the polymers convert to the gaseous form at mild temperatures, uranium borohydride once attracted much attention. It is solid green.\n", "The green hue was a puzzle for astronomers in the early part of the 20th century because none of the known spectral lines at that time could explain it. There was some speculation that the lines were caused by a new element, and the name nebulium was coined for this mysterious material. With better understanding of atomic physics, however, it was later determined that the green spectrum was caused by a low-probability electron transition in doubly ionized oxygen, a so-called \"forbidden transition\". This radiation was all but impossible to reproduce in the laboratory at the time, because it depended on the quiescent and nearly collision-free environment found in the high vacuum of deep space.\n", "BULLET::::- The planet Uranus is colored cyan because of the abundance of methane in its atmosphere. Methane absorbs red light and reflects the blue-green light which allows observers to see it as cyan.\n", "BULLET::::- Green: At lower altitudes, the more frequent collisions suppress the 630-nm (red) mode: rather the 557.7 nm emission (green) dominates. A fairly high concentration of atomic oxygen and higher eye sensitivity in green make green auroras the most common. The excited molecular nitrogen (atomic nitrogen being rare due to the high stability of the N molecule) plays a role here, as it can transfer energy by collision to an oxygen atom, which then radiates it away at the green wavelength. (Red and green can also mix together to produce pink or yellow hues.) The rapid decrease of concentration of atomic oxygen below about 100 km is responsible for the abrupt-looking end of the lower edges of the curtains. Both the 557.7 and 630.0 nm wavelengths correspond to forbidden transitions of atomic oxygen, a slow mechanism responsible for the graduality (0.7 s and 107 s respectively) of flaring and fading.\n", "Cerium uranium blue was first obtained by heating together cerium sulfate and uranyl sulfate with an excess of magnesium chloride at high temperature. The composition of the product was somewhat variable, approximating to 2CeO.UO. A similar product was obtained when ammonia was added to a solution containing uranyl nitrate and cerium(III) nitrate; the precipitate, initially yellow in colour, turned blue after a while. It is more conveniently made by heating together cerium(IV) oxide, CeO, and uranium(IV)oxide, UO, at 1000°C for several days.\n", "The normal colour of uranium glass ranges from yellow to green depending on the oxidation state and concentration of the metal ions, although this may be altered by the addition of other elements as glass colorants. Uranium glass also fluoresces bright green under ultraviolet light and can register above background radiation on a sufficiently sensitive Geiger counter, although most pieces of uranium glass are considered to be harmless and only negligibly radioactive.\n" ]

[ "In inferential statistics, the null hypothesis is a general statement or default position that there is nothing new happening, like there is no relationship between two measured phenomena, or no association among groups. Testing (accepting, approving, rejecting, or disproving) the null hypothesis—and thus concluding that there are or are not grounds for believing that there \"is\" a relationship between two phenomena (e.g. that a potential treatment has a measurable effect)—is a central task in the modern practice of science; the field of statistics gives precise criteria for rejecting a null hypothesis.\n", "In statistics, a null hypothesis is a statement that one seeks to nullify (that is, to conclude is incorrect) with evidence to the contrary. Most commonly, it is presented as a statement that the phenomenon being studied produces no effect or makes no difference. An example of such a null hypothesis might be the statement, \"A diet low in carbohydrates has no effect on people's weight.\" An experimenter usually frames a null hypothesis with the intent of rejecting it: that is, intending to run an experiment which produces data that shows that the phenomenon under study does indeed make a difference (in this case, that a diet low in carbohydrates over some specific time frame does in fact tend to lower the body weight of people who adhere to it). In some cases there is a specific alternative hypothesis that is opposed to the null hypothesis, in other cases the alternative hypothesis is not explicitly stated, or is simply \"the null hypothesis is false\" — in either event, this is a binary judgment, but the interpretation differs and is a matter of significant dispute in statistics.\n", "If we reject the null hypothesis, it means that b is inconsistent. This test can be used to check for the endogeneity of a variable (by comparing instrumental variable (IV) estimates to ordinary least squares (OLS) estimates). It can also be used to check the validity of extra instruments by comparing IV estimates using a full set of instruments \"Z\" to IV estimates that use a proper subset of \"Z\". Note that in order for the test to work in the latter case, we must be certain of the validity of the subset of \"Z\" and that subset must have enough instruments to identify the parameters of the equation.\n", "If the data do not contradict the null hypothesis, then only a weak conclusion can be made: namely, that the observed data set provides no strong evidence against the null hypothesis. In this case, because the null hypothesis could be true or false, in some contexts this is interpreted as meaning that the data give insufficient evidence to make any conclusion; in other contexts it is interpreted as meaning that there is no evidence to support changing from a currently useful regime to a different one.\n", "In inferential statistics, the null hypothesis is a general statement or default position that there is no relationship between two measured phenomena, or no association among groups. Rejecting or disproving the null hypothesis—and thus concluding that there are grounds for believing that there \"is\" a relationship between two phenomena (e.g. that a potential treatment has a measurable effect)—is a central task in the modern practice of science; the field of statistics gives precise criteria for rejecting a null hypothesis.\n", "On the basis that it is always assumed, by \"statistical convention\", that the speculated hypothesis is wrong, and the so-called \"\"null hypothesis\"\" that the observed phenomena simply occur by chance (and that, as a consequence, the speculated agent has no effect) – the test will determine whether this hypothesis is right or wrong. This is why the hypothesis under test is often called the null hypothesis (most likely, coined by Fisher (1935, p. 19)), because it is \"this\" hypothesis that is to be either nullified or not nullified by the test. When the null hypothesis is nullified, it is possible to conclude that data support the \"\"alternative hypothesis\"\" (which is the original speculated one).\n", "The null hypothesis is generally thought to be false and is easily rejected with a reasonable amount of data, but in contrary to ANOVA it is important to do the test anyway. When the null hypothesis cannot be rejected, this means the data are completely worthless. The model that has the constant regression function fits as well as the regression model, which means that no further analysis need be done.\n" ]

[ "Due to a failure in a spacecraft system, the ground team was unable to actively command the satellite and spacecraft became just a passive object in Earth orbit by which some passive drag characteristics might be deduced.\n", "Although the ITU now requires proof a satellite can be moved out of its orbital slot at the end of its lifespan, studies suggest this is insufficient. Since GEO orbit is too distant to accurately measure objects under , the nature of the problem is not well known. Satellites could be moved to empty spots in GEO, requiring less maneuvring and making it easier to predict future motion. Satellites or boosters in other orbits, especially stranded in geostationary transfer orbit, are an additional concern due to their typically high crossing velocity.\n", "Because of the increasing number of objects in space, NASA has adopted guidelines and assessment procedures to reduce the number of non-operational spacecraft and spent rocket upper stages orbiting the Earth. One method of postmission disposal is to allow reentry of these spacecraft, either from orbital decay (uncontrolled entry) or with a controlled entry. Orbital decay may be achieved by firing engines to lower the perigee altitude so that atmospheric drag will eventually cause the spacecraft to enter. However, the surviving debris impact footprint cannot be guaranteed to avoid inhabited landmasses. Controlled entry normally occurs by using a larger amount of propellant with a larger propulsion system to drive the spacecraft to enter the atmosphere at a steeper flight path angle. It will then enter at a more precise latitude, longitude, and footprint in a nearly uninhabited impact region, generally located in the ocean.\n", "Instead of being de-orbited, most satellites are either left in their current orbit or moved to a graveyard orbit. As of 2002, the FCC requires all geostationary satellites to commit to moving to a graveyard orbit at the end of their operational life prior to launch. In cases of uncontrolled de-orbiting, the major variable is the solar flux, and the minor variables the components and form factors of the satellite itself, and the gravitational perturbations generated by the Sun and the Moon (as well as those exercised by large mountain ranges, whether above or below sea level). The nominal breakup altitude due to aerodynamic forces and temperatures is 78 km, with a range between 72 and 84 km. Solar panels, however, are destroyed before any other component at altitudes between 90 and 95 km.\n", "Devastated by solar winds, artificial satellites return to Earth in the form of shooting stars. Some of their pieces make it to the ground and start some fires. These satellites have been spiralling to Earth for the last 30 years but now, with the batteries dead and any stationkeeping fuel expended, atmospheric drag causes them to plummet to the ground.\n", "When they run out of thruster fuel and are no longer able to stay in their allocated orbital position geostationary satellites are generally retired. The transponders and other onboard systems often outlive the thruster fuel and, by stopping N–S station keeping, some satellites can continue to be used in inclined orbits (where the orbital track appears to follow a figure-eight loop centred on the equator), or else be elevated to a \"graveyard\" disposal orbit. This process is becoming increasingly regulated and satellites they must have a 90% chance of moving over 200km above the getostationary belt at end of life.\n", "In addition to the atmospheric effects there are effects on the near-Earth space environment. There is the possibility that orbit could become inaccessible for generations due to exponentially increasing space debris caused by spalling of satellites and vehicles (Kessler syndrome). Many launched vehicles today are therefore designed to be re-entered after use.\n" ]

[ "For most sperm or egg recipients, the choice between anonymous sperm or egg donor and a non-anonymous one is generally not of major importance. For some donor conceived children, on the other hand, it may be psychologically burdensome not having the possibility of contacting or knowing almost nothing about the donor. Thus far, studies have found that a significant number of donor conceived children want information about their donor.\n", "A donor offspring, or donor conceived person, is conceived via the donation of sperm (sperm donation) or ova (egg donation), or both, either from two separate donors or from a couple. In the case of embryo donation, the conceiving parents are a couple.\n", "In embryo donation, these extra embryos are given to other couples or women for transfer with the goal of producing a successful pregnancy. The resulting child is considered the child of the woman who carries it and gives birth, and not the child of the donor, the same as occurs with egg donation or sperm donation.\n", "At about the same time, clinicians reasoned that more couples could be helped toward parenthood by substituting donor sperm for men who have no viable sperm, or donor eggs for women who have no viable oocytes – or both. Thus what was called gamete and embryo donation, came into being. A careful reading of the 1983 clinical report often cited as the first instance of embryo donation reveals that the donated embryo was actually created for the recipient at the same time that four embryos were made for the donor couple's own use. The menstrual cycles of the donor and recipient women were synchronized using medications, and the transfers occurred on the same day. None of these embryos had been cryopreserved.\n", "BULLET::::- Egg donors are resources for women with no eggs due to surgery, chemotherapy, or genetic causes; or with poor egg quality, previously unsuccessful IVF cycles or advanced maternal age. In the egg donor process, eggs are retrieved from a donor's ovaries, fertilized in the laboratory with the sperm from the recipient's partner, and the resulting healthy embryos are returned to the recipient's uterus.\n", "Embryo donation is a form of third party reproduction. It is defined as the giving—generally without compensation—of embryos remaining after one family's in vitro fertilisation to either another person or couple for implantation or to research. Where it is given for the purpose of implantation, the donation is followed by the placement of those embryos into the recipient woman's uterus to facilitate pregnancy and childbirth in the recipient. The resulting child is considered the child of the woman who carries it and gives birth, and not the child of the donor. This is the same principle as is followed in egg donation or sperm donation. Most often, the embryos are donated after the woman for whom they were originally created has successfully carried one or more pregnancies to term.\n", "BULLET::::- In egg donation and embryo donation, the resultant embryo after fertilisation is inserted in another woman than the one providing the eggs. These are resources for women with no eggs due to surgery, chemotherapy, or genetic causes; or with poor egg quality, previously unsuccessful IVF cycles or advanced maternal age. In the egg donor process, eggs are retrieved from a donor's ovaries, fertilised in the laboratory with the sperm from the recipient's partner, and the resulting healthy embryos are returned to the recipient's uterus.\n" ]

[ "Computer-aided maintenance (not to be confused with CAM which usually stands for Computer Aided Manufacturing) refers to systems that utilize software to organize planning, scheduling and support of maintenance and repair. A common application of such systems is the maintenance of computers, either hardware or software, themselves. It can also apply to the maintenance of other complex systems that require periodic maintenance, such as reminding operators that preventive maintenance is due or even predicting when such maintenance should be performed based on recorded past experience.\n", "The technical community (e.g., Engineers, facilities managers, and logisticians, etc.) makes distinctions between maintenance and repairs whereas accountants generally do not. Accountants typically look at maintenance and repairs as period costs requiring immediate expensing as opposed to capital improvements that become capitalized and depreciated over some future time period. The technical community often defines maintenance in terms of retaining an asset's functionality compared to repairs that restore an asset's functionality.\n", "The term \"legacy support\" is often used in conjunction with legacy systems. The term may refer to a feature of modern software. For example, Operating systems with \"legacy support\" can detect and use older hardware. The term may also be used to refer to a business function; e.g. A software or hardware vendor that is supporting, or providing software maintenance, for older products.\n", "The purpose is to preserve the value of software over the time. The value can be enhanced by expanding the customer base, meeting additional requirements, becoming easier to use, more efficient and employing newer technology. Maintenance may span for 20 years, whereas development may be 1–2 years.\n", "The technical meaning of maintenance involves functional checks, servicing, repairing or replacing of necessary devices, equipment, machinery, building infrastructure, and supporting utilities in industrial, business, governmental, and residential installations. Over time, this has come to include multiple wordings that describe various cost-effective practices to keep equipment operational; these activities take place either before or after a failure. Together, these functions are referred to as Maintenance, repair and overhaul (MRO). MRO is also used for Maintenance, repair and operations.\n", "Deferred maintenance is the practice of postponing maintenance activities such as repairs on both real property (i.e. infrastructure) and personal property (i.e. machinery) in order to save costs, meet budget funding levels, or realign available budget monies. The failure to perform needed repairs could lead to asset deterioration and ultimately asset impairment. Generally, a policy of continued deferred maintenance may result in higher costs, asset failure, and in some cases, health and safety implications.\n", "In the world of software development, maintenance mode refers to a point in a program's life when it has reached all of its goals and is generally considered to be \"complete\" and bug-free. Continued development is deemed unnecessary or ill-advised, but occasional bug fixes and security patches are still issued, hence the term maintenance mode. Maintenance mode often transitions to abandonware.\n" ]

[ "Raynal Cawthorne Bolling (September 1, 1877 – March 26, 1918) was the first high-ranking officer of the United States Army to be killed in combat in World War I. A corporate lawyer by vocation, he became an early Army aviator and the organizer of both of the first units in what ultimately became the Air National Guard and the Air Force Reserve Command.\n", "BULLET::::2. Henry Hoʻolulu Pitman (1845–1863), served in the American Civil War as a private in the Union Army, was taken prisoner and imprisoned at Libby Prison, and died after being released on parole in a prisoner exchange in February 27, 1863.\n", "BULLET::::- William W. Cooke (1846–1876), military officer in the United States Army during the American Civil War and the Black Hills War; adjutant for George Armstrong Custer and was killed during the Battle of the Little Bighorn; buried in Hamilton Cemetery\n", "Willy Pegram once stated, \"Men, whenever the enemy takes a gun from my battery, look for my dead body in front of it.\" On April 1, 1865, at the Battle of Five Forks, a battle Southern historian Douglas Southall Freeman deemed \"a day of disaster not to be recorded solely in terms of four guns lost or of good soldiers captured,\" Pegram finally suffered the loss of one of his guns while he lay mortally wounded beside it. He lingered into the evening, dying at 8 o'clock the next morning. He was buried in Richmond's Hollywood Cemetery.\n", "BULLET::::- William W. Cooke, (1846–1876), was a military officer in the United States Army during the American Civil War and the Black Hills War. He was the adjutant for George Armstrong Custer and was killed during the Battle of the Little Bighorn. Buried in Hamilton Cemetery.\n", "BULLET::::- Jack Hinson (1807–1874) was a farmer who engaged Union troops at long range during the American Civil War and recorded 36 officer \"kills\" on his custom-made .50 caliber Kentucky long rifle with iron sights.\n", "BULLET::::- Simon Bolivar Buckner, Jr. (18 July 1886 – 18 June 1945) was an American Lieutenant General during World War II. He commanded the 22nd Infantry Regiment in 1938. He was killed during the closing days of the Battle of Okinawa by enemy artillery fire, making him the highest-ranking U.S. military officer to have been killed by enemy fire during World War II.\n" ]

[ "BULLET::::- Speak in a normal, clear, calm voice. Talking loudly or shouting does not increase the volume of your voice at the receiving radios, but will distort the audio, because loud sounds result in over-modulation, which directly causes distortion.\n", "Some patients with this condition are disturbed by the perceived volume of their voice, causing them to speak very quietly. Their own voice may also sound lower to other people, because the trachea has more volume when the Eustachian tube is open. The patient may also sound as if they have congestion when speaking. Some sufferers may have difficulty in normal activities. They may also experience increased breathing rate, such as that brought on by physical activity. The increased activity not only increases the rate and force of pressure changes in the airway, which is therefore transmitted more forcefully into the middle ear, but also drives increased blood flow to peripheral muscles, compounding the problem by further depleting the Eustachian tube of extracellular fluid and increasing patency. The combination can lead to severe exacerbation of the symptoms. The urge to clear the ear is often mentioned.\n", "To place this problem in more common terms, imagine you are talking to someone 6 meters away. If the two of you are in a quiet, empty room then a conversation is quite easy to hold at normal voice levels. In a loud, crowded bar, it would be impossible to hear the same voice level, and the only solution (for that distance) is for both you and your friend to speak louder. Of course, this increases the overall noise level in the bar, and every other patron has to talk louder too (this is equivalent to power control runaway). Eventually, everyone has to shout to make themselves heard by a person standing right beside them, and it is impossible to communicate with anyone more than half a meter away. In general, however, a human is very capable of filtering out loud sounds; similar techniques can be deployed in signal processing where suitable criteria for distinguishing between signals can be established (see signal processing and notably adaptive signal processing.)\n", "The aspect of speaking publicly whether it be in front of a group of unknown people, or a close group of friends, is what triggers the anxiety for the speaker. The speaker may be comfortable if they speak in front of a group of complete strangers, but when it comes to speaking in front of family/friends, their anxiety skyrockets, and vice versa. Some speakers are more comfortable in larger groups, and some are more comfortable speaking to smaller groups. \n", "\"We are so accustomed to silence, but silence doesn’t mean surrender. We can’t stop shouting simply because our voices are low; we can’t do nothing simply because our power is weak. It’s okay to be chided, it’s okay to be misunderstood, it’s okay to be overlooked. But it’s just I no longer want to keep silent.\"\n", "A speaker's anxiety can also be reduced if they know their topic well and believe in it. It has been suggested that people should practice speaking in front of smaller, less intimidating groups when they're getting started in public speaking. Additionally, focusing on friendly, attentive people in the audience has been found to help. \n", "BULLET::::- psychological noise are the preconception bias and assumptions such as thinking someone who speaks like a valley girl is dumb, or someone from a foreign country can’t speak English well so you speak loudly and slowly to them.\n" ]

[ "The long-held theory that the first human beings in the Americas arrived by land through an ice-free corridor in western Canada has been called into question by archaeological discoveries along the Pacific coastlines of North and South America. Many scientists now believe that the earliest inhabitants arrived by boat, and findings on Cedros Island bolster that theory. The Clovis culture, which began about 11,200 BCE, is the earliest universally acknowledged evidence of man in the Americas; but the remains of ancient people dating to earlier than 10,000 BCE have been found on Cedros Island. Cedros Island was attractive to humans because of its rich marine environment and its relative abundance of water compared to most of the desert coastline of Baja California. The early people of Cedros Island fished, gathered shellfish, and hunted seals, sea lions, and seabirds. Ancient spear points and shell fishhooks found on Cedros are similar to those found in a semi-circle of the Pacific coastline from Okinawa to Peru. The fishhooks made of shell found on Cedros Island indicate a marine, sea-going culture some 6,000 years before similar cultures are known to have existed on the coast and islands of California.\n", "During the first quarter of the 20th century, a bitter debate raged in the archaeology and physical anthropology communities, about recent discoveries suggesting that humans had arrived in the Americas several thousand years earlier than had previously been thought possible. Most notably Ales Hrdlicka, then curator of the U.S. National Museum (now the Smithsonian Museum National Museum of Natural History), remained adamant in his belief that humans could not have arrived until about three thousand years ago. Findings of stone tools together with ancient animal remains were dismissed as, at best, mixing due to erosion or burrowing animals, or worse as careless excavation techniques, or even fraudulent \"salting\" of artifacts among the bones. Any archaeologist bold enough to challenge the conventional view risked damage to his reputation and career, without indisputable proof. The site in Wild Horse Arroyo provided this opportunity.\n", "Before the Spanish discovered the New World (continental America), the deadly infections of smallpox, measles, and influenza were unheard of. The Native Americans did not have the immunities the Europeans developed through long contact with the diseases. Christopher Columbus ended the Americas' isolation in 1492 while sailing under the flag of Castile, Spain. Deadly epidemics swept across the Caribbean. Smallpox wiped out villages in a matter of months. The island of Hispaniola had a population of 250,000 Native Americans. 20 years later, the population had dramatically dropped to 6,000. 50 years later, it was estimated that approximately 500 Native Americans were left. Smallpox then spread to the area which is now Mexico where it then helped destroy the Aztec Empire. In the 1st century of Spanish rule in what is now Mexico, 1500–1600, Central and South Americans died by the millions. By 1650, the majority of New Spain (now Mexico) population had perished.\n", "BULLET::::- (b) humans probably arrived in the Americas earlier than thought, over the course of multiple waves of migration to the New World (not solely by the Bering land bridge over a relatively short period of time).\n", "The pre-Columbian population of the Americas is uncertain; historian David Henige called it \"the most unanswerable question in the world.\" By the end of the 20th century, scholarly consensus favored an estimate of roughly 55 million people, but numbers from various sources have ranged from 10 million to 100 million. Encounters between European explorers and populations in the rest of the world often introduced local epidemics of extraordinary virulence. According to the most extreme scholarly claims, as many as 90% of the Native American population of the New World died due to Old World diseases such as smallpox, measles and influenza. Over the centuries, the Europeans had developed high degrees of immunity to these diseases, while the indigenous peoples had no such immunity.\n", "In the Norse Saga of Erik the Red, Bjarni Herjólfsson, said to be the first European to discover the Americas, had his ship drift into the Irish Ocean where it was eaten up by shipworms. He allowed half the crew to escape in a smaller boat covered in seal tar, while he stayed behind to drown with his men.\n", "Its starting-point is a matter for some contention, as is the more general question of when human habitation in the Americas was first achieved. It is accepted by a significant number of researchers that the peopling of the Americas had occurred by c. 11,200 years ago.\n" ]

[ "RNA editing is a molecular process through which some cells can make discrete changes to specific nucleotide sequences within an RNA molecule after it has been generated by RNA polymerase. RNA editing may include the insertion, deletion, and base substitution of nucleotides within the RNA molecule. RNA editing is relatively rare, with common forms of RNA processing (e.g. splicing, 5'-capping, and 3'-polyadenylation) are not usually considered as editing. \n", "In some instances, an mRNA will be edited, changing the nucleotide composition of that mRNA. An example in humans is the apolipoprotein B mRNA, which is edited in some tissues, but not others. The editing creates an early stop codon, which, upon translation, produces a shorter protein.\n", "Gene editing is the process by which specific changes are made to the sequence of a gene within the context of a host cell. By editing the code of a patient-derived cell to introduce or repair a genetic change believed to drive disease, a patient’s disease can be reproduced in a laboratory setting, letting researchers ask important biological questions of potential drugs or cell therapies earlier in the drug discovery process.\n", "They are generally composed of a DNA-binding domain (specific to a certain sequence) coupled to a modulatory domain (which acts upon other transcription factors) in order to alter the expression of a particular gene. It is also possible to downregulate expression of a gene by targeting the 5' untranslated region with a DNA-binding domain that lacks a regulatory domain; this will reduce transcription simply by blocking RNA polymerase progression along the DNA template.\n", "RNA editing has been observed in some tRNA, rRNA, mRNA, or miRNA molecules of eukaryotes and their viruses, archaea, and prokaryotes. RNA editing occurs in the cell nucleus and cytosol, as well as within mitochondria and plastids. In vertebrates, editing is rare and usually consists of a small number of changes to the sequence of the affected molecules. In other organisms, extensive editing (\"pan-editing\") can occur; in some cases the majority of nucleotides in an mRNA sequence may result from editing.\n", "RNA editing is the insertion, deletion, and substitution of nucleotides in a mRNA transcript prior to translation to protein. The highly oxidative environment inside chloroplasts increases the rate of mutation so post-transcription repairs are needed to conserve functional sequences. The chloroplast editosome substitutes C - U and U - C at very specific locations on the transcript. This can change the codon for an amino acid or restore a non-functional pseudogene by adding an AUG start codon or removing a premature UAA stop codon.\n", "Thus, RNA editing evolved more than once. Several adaptive rationales for editing have been suggested. Editing is often described as a mechanism of correction or repair to compensate for defects in gene sequences. However, in the case of gRNA-mediated editing, this explanation does not seem possible because if a defect happens first, there is no way to generate an error-free gRNA-encoding region, which presumably arises by duplication of the original gene region. This thinking leads to an evolutionary proposal called \"constructive neutral evolution\" in which the order of steps is reversed, with the gratuitous capacity for editing preceding the \"defect\". \n" ]

[ "Neutrons are the only type of ionizing radiation that can make other objects, or material, radioactive. This process, called neutron activation, is the primary method used to produce radioactive sources for use in medical, academic, and industrial applications. Even comparatively low speed thermal neutrons cause neutron activation (in fact, they cause it more efficiently). Neutrons do not ionize atoms in the same way that charged particles such as protons and electrons do (by the excitation of an electron), because neutrons have no charge. It is through their absorption by nuclei which then become unstable that they cause ionization. Hence, neutrons are said to be \"indirectly ionizing.\" Even neutrons without significant kinetic energy are indirectly ionizing, and are thus a significant radiation hazard. Not all materials are capable of neutron activation; in water, for example, the most common isotopes of both types atoms present (hydrogen and oxygen) capture neutrons and become heavier but remain stable forms of those atoms. Only the absorption of more than one neutron, a statistically rare occurrence, can activate a hydrogen atom, while oxygen requires two additional absorptions. Thus water is only very weakly capable of activation. The sodium in salt (as in sea water), on the other hand, need only absorb a single neutron to become Na-24, a very intense source of beta decay, with half-life of 15 hours.\n", "Neutron emission is a mode of radioactive decay in which one or more neutrons are ejected from a nucleus. It occurs in the most neutron-rich/proton-deficient nucleides, and also from excited states of other nucleides as in photoneutron emission and beta-delayed neutron emission. As only a neutron is lost by this process the number of protons remains unchanged, and an atom does not become an atom of a different element, but a different isotope of the same element.\n", "Because neutrons that strike the hydrogen nucleus (proton, or deuteron) impart energy to that nucleus, they in turn break from their chemical bonds and travel a short distance before stopping. Such hydrogen nuclei are high linear energy transfer particles, and are in turn stopped by ionization of the material they travel through. Consequently, in living tissue, neutrons have a relatively high relative biological effectiveness, and are roughly ten times more effective at causing biological damage compared to gamma or beta radiation of equivalent energy exposure. These neutrons can either cause cells to change in their functionality or to completely stop reproducing, causing damage to the body over time. Neutrons are particularly damaging to soft tissues like the cornea of the eye.\n", "Neutron radiation is a form of ionizing radiation that presents as free neutrons. Typical phenomena are nuclear fission or nuclear fusion causing the release of free neutrons, which then react with nuclei of other atoms to form new isotopes—which, in turn, may trigger further neutron radiation. Free neutrons are unstable, decaying into a proton, an electron, plus an anti-electron-neutrino with a mean lifetime of 887 seconds (about 14 minutes, 47 seconds).\n", "Highly excited neutron-rich nuclei, formed as the product of other types of decay, occasionally lose energy by way of neutron emission, resulting in a change from one isotope to another of the same element. The nucleus may capture an orbiting electron, causing a proton to convert into a neutron in a process called electron capture. All of these processes result in a well-defined nuclear transmutation.\n", "Two examples of nuclides that emit neutrons are beryllium-13 (mean life ) and helium-5 (). Since only a neutron is lost in this process, the atom does not gain or lose any protons, and so it does not become an atom of a different element. Instead, the atom will become a new isotope of the original element, such as beryllium-13 becoming beryllium-12 after emitting one of its neutrons.\n", "Neutrons are produced when photons above the nuclear binding energy of a substance are incident on that substance, causing it to undergo giant dipole resonance after which it either emits a neutron (photoneutron) or undergoes fission (photofission). The number of neutrons released by each fission event is dependent on the substance. Typically photons begin to produce neutrons on interaction with normal matter at energies of about 7 to 40 MeV, which means that radiotherapy facilities using megavoltage X-rays also produce neutrons, and some require neutron shielding. In addition, electrons of energy over about 50 MeV may induce giant dipole resonance in nuclides by a mechanism which is the inverse of internal conversion, and thus produce neutrons by a mechanism similar to that of photoneutrons.\n" ]

[ "For example, those who suffer from misophonia often report that specific human sounds, including those made by eating, breathing, whispering, or repetitive tapping noises, can precipitate feelings of anger and disgust, in the absence of any previously learned associations that might otherwise explain those reactions.\n", "Certain sounds, such as fingernails drawn down a blackboard, cause strong feelings of aversion or even fear in most humans. A 2004 study claimed that the blackboard sound was very similar to the warning cry of Siamang gibbons and hypothesized that a vestigial reflex is what causes the fight or flight reaction in humans. Other sounds, such as a person coughing or vomiting, provoke responses of disgust. These emotional reactions are thought to be caused by the body's natural tendency to avoid disease.\n", " the literature on misophonia was limited. Some small studies show that people with misophonia generally have strong negative feelings, thoughts, and physical reactions to specific sounds, which the literature calls \"trigger sounds\". These sounds are apparently usually soft, but can be loud. One study found that around 80% of the sounds were related to the mouth (eating, slurping, chewing or popping gum, whispering, etc.), and around 60% were repetitive. A visual trigger may develop related to the trigger sound. It also appears that a misophonic reaction can occur in the absence of an actual sound.\n", "Roswell G. Flemington, owner of a model ship company and formerly of the United States Navy, grew up in a home where his mother required silence. Thus, as an adult, he makes as much noise as he possibly can, is obsessed with the Navy, and behaves thunderously in response to any slight.\n", "It is usually described as a ringing noise, but in some patients, it takes the form of a high-pitched whining, electric buzzing, hissing, humming, tinging or whistling, ticking, clicking, roaring, \"crickets\", \"tree frogs\", \"locusts (cicadas)\", tunes, songs, beeping, sizzling, or sounds that slightly resemble human voices or even a pure steady tone like that heard during a hearing test. Tinnitus can be intermittent or continuous: in the latter case, it can be the cause of great distress. In some individuals, the intensity can be changed by shoulder, head, tongue, jaw or eye movements. Most people with tinnitus have some degree of hearing loss.\n", "The discomfort threshold is the loudness level from which a sound starts to be felt as too loud and thus painful by an individual. Industry workers tend to have a higher discomfort threshold (i.e. the sounds must be louder to feel painful than for non-industry workers), but the sound is just as harmful to their ears. Industry workers often suffer from NIHL because the discomfort threshold is not a relevant indicator of the harmfulness of a sound.\n", "Brains are not adapted for dealing with the repetitive and persistent sound of back-up beepers, but more towards natural sounds that dissipate. The sound is perceived as irritating or painful, which breaks concentration.\n" ]

[ "The first color photographic cover on the Saturday Evening Post magazine (May 29, 1937)was by Dmitri, a photo of an Automobile racing driver seated in his race car. Another SEP cover, May 16, 1944, was a photo of General 'Hap' Arnold, with B-17's flying overhead, with a B-17 crew planning a flight. This cover was so popular that the United States used the photo image to print a very rare World War II (war effort) poster.\n", "The picture became widely circulated in Finland and was an example of an iconic war photograph in Finnish World War II history. It was compared to similar pictures, such as the American \"Raising the Flag on Iwo Jima\" and the Soviet \"Raising a Flag over the Reichstag\", although it was not considered to have become as symbolic as they were. In fact, the Finnish popular memory of the conflict relied equally on illustrations, such as the cover of \"The Unknown Soldier\", a 1954 war novel about the Continuation War.\n", "Jindřich Bišický (11 February 1889 in Zeměchy, now part of Kralupy nad Vltavou – 31 October 1949 in Velvary) is known as the author of unique photographs from World War I. He was not properly identified until 2009.\n", "In 2011, Parker Fraley was at a reunion held at the Rosie the Riveter/World War II Home Front National Historical Park and there she spotted the 1942 photo of her operating a machine. She was surprised to find that the caption said that it was Geraldine Hoff Doyle and she wrote to the park to correct their mistake. They thanked her for telling them the correct name for the photo. Doyle had in innocence thought that the photo was of her and by extension she had decided that the poster was too. This mis-identification then became well-established as sources repeated it – an example of the Woozle effect.\n", "The U.S. Naval Institute holds one of the world’s largest private collections of military photographs: more than 450,000 images of people, ships and aircraft from all branches of the armed forces. The photographs date from the American Civil War to the present.\n", "Some of the included photos are identified with larger events, such as H.S. Wong's 1937 photograph of a lone child crying at a demolished train station on \"Bloody Saturday\" as representative of the entire bombing of Shanghai. Other photographs are excerpts from larger historic collections, such as Roger Fenton's and Alexander Gardner's respective groundbreaking documentations of the Crimean War and American Civil War. Margin notes document the circumstantial background of many photographs, as well as instances where the images have been accused of being staged.\n", "It was only around 1995 that the record was finally corrected, when Greyeyes's daughter-in-law, Melanie Fahlman Reid, learned that the photo hung in the Canadian War Museum with the incorrect caption. Reid, who had discussed the photo personally with Greyeyes, provided a more accurate explanation of the photograph from her mother-in-law's recollection.\n" ]

[ "People with the flu are advised to get plenty of rest, drink plenty of liquids, avoid using alcohol and tobacco and, if necessary, take medications such as acetaminophen (paracetamol) to relieve the fever and muscle aches associated with the flu. In contrast, there is no enough evidence to support corticosteroids as add on therapy for influenza. It is advised to avoid close contact with others to prevent spread of infection. Children and teenagers with flu symptoms (particularly fever) should avoid taking aspirin during an influenza infection (especially influenza type B), because doing so can lead to Reye's syndrome, a rare but potentially fatal disease of the liver. Since influenza is caused by a virus, antibiotics have no effect on the infection; unless prescribed for secondary infections such as bacterial pneumonia. Antiviral medication may be effective, if given early (within 48 hours to first symptoms), but some strains of influenza can show resistance to the standard antiviral drugs and there is concern about the quality of the research. High-risk individuals such as young children, pregnant women, the elderly, and those with compromised immune systems should visit the doctor for antiviral drugs. Those with the emergency warning signs should visit the emergency room at once.\n", "Mild disease can be treated with fluids by mouth. In more significant disease spraying with mist and using a fan is useful. For those with severe disease putting them in lukewarm water is recommended if possible with transport to a hospital.\n", "A number of methods have been recommended to help ease symptoms, including adequate liquid intake and rest. Over-the-counter pain medications such as acetaminophen and ibuprofen do not kill the virus; however, they may be useful to reduce symptoms. Aspirin and other salicylate products should not be used by people under 16 with any flu-type symptoms because of the risk of developing Reye's Syndrome.\n", "Since then, there have been numerous reports in the United States that chicken soup alleviates the symptoms of the common cold. Even usually staid medical journals have published tongue-in-cheek articles on the alleged medicinal properties of chicken soup.\n", "A 2005 review by an HRSA-funded scientific panel concluded that vomiting alone does not reliably remove poisons from the stomach. The study suggested that indications for use of ipecac syrup were rare, and patients should be treated by more effective and safer means. Additionally, its potential side effects, such as lethargy, can be confused with the poison's effects, complicating diagnosis. The use of ipecac may also delay the use of other treatments (e.g., activated charcoal, whole bowel irrigation, or oral antidotes) or make them less effective.\n", "The US Centers for Disease Control and Prevention (CDC) recommend \"avoiding those who are sick\". Since the virus is spread through saliva and phlegm as well as stool, washing hands is important. Sick people can attempt to decrease spreading the virus by basic sanitary measures, such as covering the nose and mouth when sneezing or coughing. Other measures including cleaning surfaces and toys.\n", "When taking these medicine, the patient's urine, tears, sweat may turn orange. This is because the rifampicin discolors these body fluids, so patients should not be alarmed. When in doubt, patients should consult their health provider.\n" ]

[ "Painful erections appear only during the sleep. This condition is present during the REM sleep. Sexual activity doesn’t produce any pain. There isn’t any lesion or physical damage but an hypertonia of the pelvic floor could be one cause. It affects men of all ages but especially from the middle-age. Some pharmacologic treatment as propranolol, clozapine, clonazepam, baclofen and various antidepressants, seems to be effective.\n", "Pain is often aggravated by elevation of the arm above shoulder level or by lying on the shoulder. Pain may awaken the patient from sleep. Other complaints may be stiffness, snapping, catching, or weakness of the shoulder.\n", "Restless legs syndrome (RLS) is generally a long term disorder that causes a strong urge to move one's legs. There is often an unpleasant feeling in the legs that improves somewhat with moving them. This is often described as aching, tingling, or crawling in nature. Occasionally the arms may also be affected. The feelings generally happen when at rest and therefore can make it hard to sleep. Due to the disturbance in sleep, people with RLS may have daytime sleepiness, low energy, irritability, and a depressed mood. Additionally, many have limb twitching during sleep.\n", "Pain is typically related to tensing the abdominal wall muscles, so any type of movement is prone to aggravate pain. Lying quietly can be the least painful position. Most patients report that they cannot sleep on the painful side.\n", "In addition, as a result of continuous muscular activity without proper rest time, effects such as cramping are much more frequent in sleep-deprived individuals. Extreme cases of sleep deprivation have been reported to be associated with hernias, muscle fascia tears, and other such problems commonly associated with physical overexertion.\n", "Symptoms include a dull ache to the left 2 inches above the anus or higher in the rectum and a feeling of constant rectal pressure or burning. The pain may last for 30 minutes or longer, and is usually described as chronic or intermittent with prolonged periods, in contrast to the brief pain of the related disorder proctalgia fugax. Pain may be worse when sitting than when standing or lying. Precipitating factors include extended sitting, defecation, stress, sexual intercourse, childbirth, and surgery. Palpation of the levator ani muscle may find tenderness.\n", "Physical exercise may cause pain both as an immediate effect that may result from stimulation of free nerve endings by low pH, as well as a delayed onset muscle soreness. The delayed soreness is fundamentally the result of ruptures within the muscle, although apparently not involving the rupture of whole muscle fibers.\n" ]