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Argenx SE (NASDAQ: ARGX) has disclosed Monday that it has entered into an agreement to buy FDA Priority Review Voucher (PRV) from Bayer Healthcare Pharmaceuticals, Inc. for $98 million. This voucher enables its holder to an FDA priority review of A Biologics License Application (BLA), which decreases the target review time and may lead to an expedited approval.
The company is planning to purchase the PRV for the future market application for its FcRn antagonist efgartigimod. Efgartigimod is beneficial for patients who are suffering from autoimmune diseases. The deal will be executed after fulfilling the closing conditions.


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Christmas Red Heart Door Decoration Peri Woltjer Screenings
Item: 2020200337Regular price List Price: $69.00 Sale price
Our Price: $55.00
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This hand-painted aluminum screen is both durable and festive, with a lovely heart with a large leaf-like holly bow and candy cane trim adorning the front. Bold candy cane-colored trim adds an extra flair to this piece that makes it ideal for feeling festive this Christmas season. It is designed to be used both indoors and outdoors. The Screenings Collection by Peri Woltjer features uniquely handcrafted pieces of indoor/outdoor that offer a welcoming way to announce each season. The colorful, playful decorations crafted from painted metal screen are popular, festive gifts. Hangs from a wire hook. Made out of aluminum screen.
Size: 24" wide x 23" high
All orders ship FREE to anywhere in the United States! We ship Monday through Saturday. All orders are shipped out the same or next business day after the order is placed. All Standard and Priority shipping orders placed after 12 p.m. CST on Fridays will ship out the following Monday. Read More

subset: commoncrawl


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How to make a beefy lunchbox sandwich for back to school
Make a Beefy Lunchbox Sandwich for Back to School
Your bread must be frozen at it's freshest. This is the most important step to ensure the school sandwich will be at it's best, hours later.
Add a very thin layer to your frozen bread, it won't absorb much and will be the perfect amount by the time it thaws out.
Add a slice of Havarti (or cheese of your choice) to one side, and arugula on the other.
Add dry lettuce to both sides, this serves as your barrier to keeping the bread from getting soggy. I reverse the lettuce directions so each side gets a leafy edge and a crunchy edge.
Add Julia Childs Beef Bourguignon leftovers to one side and top with radish sprouts. Use a fork to separate meat from sauce. http://www.epicurious.com/recipes/food/views/Boeuf-Bourguignon-102144
I send my coveted sandwiches off to school in Lunchbots to protect them from the backpack. I paired this lunch with sweet grapes, sour mini pickles, crisps, carrots and sugar snap peas & a cookie!
- 2.0 Slices of Bread
- 1.0 Slice of Havarti Cheese
- 5.0 Sprigs of Arugula
- 2.0 Pieces of Red Leaf Lettuce
- 1/2c Beef Bourguignon
- 1.0pch Radish Sprouts


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A Website from a template. Or custom design? What is better?
A Website from a template. Or custom design? What is better?
As a web developer, I get a lot of questions. One being if we can edit a theme or a template for WordPress or Joomla.The fact of the matter is, so many people use pre made templates these days. The client is sometimes limited in what they can get. Im not saying that is wrong to use a template for web design. However if we were doing audio production (Making a song) , it would be down right wrong. Just look at Will.I.am and that Mat Zo song. Will.I.am is under a microscope using another person song as a virtual template. Since in the web design world the vast amount of web designers have free roam to do what they want. It's hard as a consumer to know or even understand how this all works..
Let me break it down for you.
Using a template for a website is as easy as 1-2-3. You go to a site like Template Monster, find your template, then buy it. The hard part is then changing all the elements of the template. Now if you have a good web designer or developer. They can edit the CSS and change the images. In the HTML5 and CSS3 world depending on how the theme is put together, certain elements are still a bit tricky to fix, alter or change. typically in WordPress they make it real easy in the theme settings to change things around. But lets say for instance the client wants to change the theme color to purple. Or wants to move a certain element like a box to a different spot. This can be done by a seasoned programmer. But an average run of the mill web designer could potentially struggle with this and need to hire somebody to do it.
On the other hand, if your theme was built from scratch. This would be put in its place from the beginning when the theme was made. Making a custom theme is usually a must for most clients who prefer something different, or not a typical website. But subsequently even clients that need simple projects. Some people just want something that may not be elaborate. But has the areas active within the web design itself, that they need. A good example of this is adding a search bar in lets say a header. But has a box on the lower left that has a particular size. But only wants a skinny header. Using a template, can be cumbersome in this type of situation. Because you have to sift through a bunch of template to find one that has the color elements and the region elements that client needs. On the intern making a custom template solution the right option for that customer.
All clients are different, and have different needs. They all do, you may find a few that need the same thing. But the clients we deal with, usually like to do different things with their websites. So intern making the custom website theme the best option.
So in all actuality, using a website template is totally fine. If that's what the clients needs are.
What kind of website do I need?
So people ask me every day for website. I deal with people all the time that need a website but have no idea what type of site will work for them. I must say, that the amount of people who don't know exactly what they need. Has grown since I first started. And im sure other companies that deal with these types of clients. Take advantage of these people. Since a lot of my current client base are people in one way or another have been either cheated, over sold, project never completed, or paying a quite large sum of money per month for a service that they don't even receive. A lot of web design freelancers shaft their clients. 1) Because the freelancer most of the time has little to no experience working with people 2) The freelancer may not know what he or her are able to achieve. 3) Are solely taking their clients for a ride, to get more and more money out of them. I deal with it on a pretty consistent basis. A person calls around looking for a deal. They get multiple quotes from $1500 – $5000 from freelancers and companies. Then settle for a freelancer doing a site in WordPress that hardly cuts the mustard for $350.
Then they get into the project just to find out that the person has horrible people skills and cannot deliver what they need, let alone on time. I hear horror stories about this daily. One client in particular. He bought a website from a company in AZ. Shortly thereafter he works with them for some SEO ( Search Engine Optimization ). The day after making a deal with that same company, he gets a call from the freelancer that the company hired to do the SEO work. When he called my client the SEO guy gave him the same service at half price. This tells me that the original company they did business with. If overselling the service. In other words. If the company is selling you a package for $1000 a month. And the SEO guy is only getting paid $300, and then the client is paying $1000 for a $300 service. On the intern being significantly oversold to the bitter end. So I deal with these unfortunate people daily and I personally feel real bad for them. I try to steer them in the right direction. And then give them some guidance on what they need, or should do. Then let THEM make their decisions on what they feel is best for THEIR own business. I find this works best. Who knows the business better than the client? Since the clients know their ideal client. Or have at least a good idea. I make recommendations and stay away from being pushy to sell them something they could use, but not need.
Another case study is a mad named Lovell. Lovell is a middle aged man that was a multimillionaire at one point. Then the housing market crashed and his bottom fell out and was left with a bunch of bills he couldn't pay. He had some money saved up so he decided to invest it in a website for the medical industry. Lovell is highly educated in the medical industry and financing, since he was a banker. A extremely cunning and quick on his feet sort of person. You would think that with the head on his shoulders, he shouldn't have a problem getting a mildly complex website up and running.
Well let me tell you something, he got shafted. A number of times this man was shafted. He explained to me he was been through 4 designers and at least $15k USD. To my surprise when he gave me his packet of what the site was needing to do and show. I was dumbfounded of just how simple of a job he needed. Granted its time consuming, but not a website with 100 different features. Meaning these freelance designers and 1 company just could not get on the same page as him. He spent $1100 for a logo that should have been priced at about $250 and was charged for websites that had nothing to do with his page theme he wanted. He ordered a website with high-contrast colors (that he actually supplied) he supplied all graphics and did a mock-up himself. And these designers just couldn't either understand or care about what the client actually wants. It's a shame but its true. His tale along with the one before are real life folks. So keep that in mind when your pricing a site out. All web Developers are NOT created equal. And most have no clue about sales, customer service or how to keep a client happy.
This is where we fit in. In the Las Vegas area Las Vegas Web Designers are hard to come by. People think just finding a person on Craigslist is going to work out just fine. Well you have another thing coming. There have been stories about people on Craigslist that are here one day. Then gone tomorrow, so watch out.
So you still ask what type of website do I need? Try leaving a quote HERE and you will be in good hands.
But the real answer is: Whatever type of site that best suits your needs.
Website customers all have different needs and different demands. Just like court, the judge looks at the case and the person then comes up with what the judge feels is best, on a case by case basis.
Website design is somewhat of the same. The website developer needs to talk to the client. Then sort out what the client needs, could use, should have and will come later. I like working in phases, they work really well.
So when you ask yourself what type of site do I need, remember. That the type of site you need is all based off what your business is demanding, nothing more nothing less.
Affordable websites in Las Vegas
Affordable websites in Las Vegas are usually very difficult to find because it usually isn't a simple blog. Las Vegas is known to be the home of interactive businesses like casinos and personalized places, so most of the web design in Las Vegas requires more complex scripts like casino scripts, databases or even just e-commerce scripts.
With that in mind, I'm going to discuss some scripts you can buy, so that you can provide for your Las Vegas web design company and substantially cut down your expenses, making an affordable website a possible quest.
Here is a list of scripts that can be useful for website design – remember to always check if the script can provide you all of your needed features.
E-Commerce Scripts:
E-commerce scripts are a vital element of website design for those that wish to sell their products, or even services, through the Internet. Many Las Vegas businesses use it, and if you purchase your own and give it to the Las Vegas web design company you are working with, it will save you some bucks.
Casino Scripts:
A virtual casino is an awesome site to run, it's fun and better yet – it's profitable.
You don't need skillful croupiers on this one, as the scripts have the probabilities tipped on your favor. Be sure to conduct proper research for this web design component, as the casino niche is full of scams.
Social Media Scripts:
There are tons of social media scripts available, but the ones where you can save the most on are scripts that make your own website a social media site. Yes, there are scripts like this available, and there are even Facebook clone scripts and other platform clones as well. Affordable websites are a reality, if you provide your company the right tools.
Bottom line you can save some dollars if you get the right scripts, but don't forget that it is vital to get the right web design company to install it, as website design is a topic that has a lot of people that can do it, but do a very poor job.
Best Website Design
Web-site style and design at the moment, has rose a lot higher in standards than yester-years. Flash has left the equation. Regular HTML is down the drain. The entire world is database driven. Including into the list JavaScript and also other web relevant applets. Each buyer is completely different compared to eath other as well as consequently is their own need of their own venture may differ substantially. Being inside the field for over 10 years. I've seen a lot of different kinds of ventures come across mine as well as my collaborators desktop. The simple fact this occurs can make the design really diverse. It can make the design company work a lot trickier than standard. Web development is merely part of the web style project. The web development group will have to account for any sort of serious programing concern. Having that being suggested we need to have to look at the elements of the venture at hand. Then evaluate the situation and hand as well as correct the want for external programing and also different web page style interfaces.
People today do not usually comprehend exactly how the web-site style and design processes works. So your project director needs to have to understand exactly how to clarify to their client. The procedure of their particular Web site Development work flow. The customer soon after talking to the creator, and quite possibly transmitting graphical or prepared example of this to all of them. Should get a cell phone call back again from the web site developer and get a a really close idea of just how much the web page cost.
While the assignment in underway. The web development and web design team will take their time frame and put the web site together. The codes gets efficient in the middle of this process. And the style gets produced at this time period too. Once content material gets up the web site sets out to can come together. From this point the world-wide-web creator gets together with the web developer. After that gets with the graphic designer as well as the other individuals. They will just about all sort of the specialized aspect and if there is a concern. Then reenact conditions for appropriate web site bug screening. The webdevelopment bug testing is very similar except rather of reenacting the predicament. They replicate it. They figure out exactly how to amend the issue.
The end result is the clients finished job. Or concluded website. The client should know what is going on with it. The web designer should explain what is working or not working. Or what needs additional programing or work. A lot of periods the clients opportunity of the venture is a bit out of reach as compared with the client needs. The builder and web design programmer will perform their very best to create the web site applet do what the customer requires. However presently there usually are a lot of times that the programmer or web developer will get the applet made and its about 90% there. Solely due to the fact some items in the web software world will set back the software. Then help make it seriously tough to complete the programing process. So all tiny quarks get worked well out sometimes for an extra charge. The reason for this, is simply because the clientele may assume the total scope but from time to time the specific part requires to be created. This means it essentially has to be created with logic and everything.
The final outcome is the client happy and thankful for the services. WE all hope for happy clients. But happiness is earned, not given.


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- added action under top menu 'search' to clear all exclusions from the search; to be run from users finding unexpected exclusions from the search in tree nodes (auxiliary icons of ghosts, #1837)
- added action under top menu 'view' to enable/disable placing the menubar in the titlebar (#1815)
- unfullscreen doesn't work with the custom titlebar active (menubar in titlebar), so in this case we can only maximise/unmaximise when fullscreen/unfullscreen is requested
- implemented under top menu 'view' toggle show/hide menubar with default keyboard shortcut F12 (#1849)
- restored Ctrl+T keyboard shortcut to pop up unified search in multiple nodes dialog with only node name and tags selected (#1829)
- export to html of code do not use ' ' – use instead
- fixed issue of code non syntax highlighted in exported pdf and html
- fixed wrong line number reported in search all matches dialog
- added new language Portuguese Portugal (work of Rui Santos)
11 thoughts to "cherrytree 0.99.43 issued"
Hi Guispen,
Thanks again for your efforts, CherryTree is getting better and better.
A huge difference with the python version I first started with, comming over from Zim.
Thank you!
Thank you for the restoration of CTRL+T! The most useful notebook out there by far!
Thank you Guispen!
Thank you for your good job.
Very great!!!
Thank very much!!!
Good day.
The link to a folder in a table cell is not working correctly. The link is not inserted in the selected cell, but in front of the table.
Thanks for the updating.
Do you have any plans to launch a web version alongside with an app for smart phones?
Thank you, giuspen !
This is probably THE BEST notebook I've ever seen!
Feature request: (*will become a killer-feature [for programmers]*)
1.In component "Code Box":
1.1.Add "Run" icon
1.2.Add "Results Field" (let's place it to the 'east' of "Code Box")
> is a "Run" icon
* is a "Settings" icon, which has at least that interesting option:
1. Run this script everytime This Node loads.
So, Auto-Calculations may be done.
And other Stuff. Even some Shell Tasks! (just keep sources there)
{Yes, I agree, that user should be warned about that "potential security risk"-feature}
But that will bring a lot of flexability to end-user!
Okay, you might tell me that I should try Junipyter Notebook.. But… With this feature
(In-Place Scripting) this awesome piece of software will be MUCH cooler.
If that is too hard, please, could you make ……. these (very simple innovations):
1.Textfield (addable component, which may be a CodeBox) that is tied to a '%filename.txt' and auto-refreshes its content as long as file changes
2.Table (there is already an option to Load CSV from file) — could you please make an option to Auto-Refresh and Auto-Save changes to the original file (this option is enabled/disable at Settings Dialog of Table Component)
Your program UI looks absolutely gorgeous, especially left sidebar, and icons, and margins…. all is super-perfect.
Your program's feature "export to PDF" is just amazing
Thanks very much Guispen!


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Fei Xing is a Chinese actress and singer born in Inner Mongolia, China, on October 9, 1994. She attended the Shanghai Theatre Academy and made her entertainment industry debut in 2015, appearing in the education-themed variety show "Grade One: Freshman." She made her acting bow the following year, starring in the TV drama "Campus Basketball Situation" and the movie "Don't Waste Youth." In 2017, she appeared in the lead female role in Season 1 and 2 of "Master Devil Do Not Kiss Me." She also sang one of the songs that appeared on the show's soundtrack, entitled "I Will Forever Love the Guy Sitting Opposite Me." More recently, she has appeared in the drama "Put Your Head on My Shoulder" (2019).
- Born
- Oct 1, 1994 (age 28)
- Star Sign
- Libra


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Click REGULATORY PROGRESS for a list of rule-making & regulatory changes since January 2016.
Board Rules (all disciplines compiled): https://www.doa.la.gov/media/japawb11/46v45.pdf
Louisiana Administrative Code 46 XLV Medical Professions
Discipline Specific Rules
Acupuncture (Physician, Licensed & Detoxification Specialists)
Polysomnography Personnel - Due to changes in the Polysomnographic Health Professionals Law in 2017, a rule making effort to conform the rules to the law is in development. Please note that the law supersedes the rules at this time.
Applicable Rules for All Disciplines
Preventing Transmission of Hepatitis B Virus (HBV) and Human Immunodeficiency Virus (HIV)
Applicable Rules for Prescribing Licensees


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Facebook Advertising Trends & Tips for Real Estate Agents (During COVID-19)
If you're wondering how you can best leverage this time and keep momentum during the ebbs and flows of COVID-19, you're not alone. Agents and brokers everywhere are taking a step back to look at their digital advertising and marketing plans, seeing where they should (and shouldn't) cut costs, and looking to the experts for guidance.
The good news is that even with limited physical interaction, prospecting for new leads online and nurturing your database is still a productive and profitable way to move your real estate business forward. Digital advertising has proven to be a smart investment for agents during COVID-19. In this post we'll share some data outlining the impact of COVID-19 on Facebook Advertising, as well as how BoomTown users are leveraging Marketing Central to launch best practice advertising programs on Facebook.
First, let's take a peek at Marketing Central and see how it has helped Boomtown Users grow their businesses.
Marketing Central
As of June 19, 2020, Marketing Central has produced the following results:
Over 2,875 Facebook campaigns have been activated 19,500,000 ad impressions have been served 39,700 leads generated from listing ads 46,650 lead re-engaged
Marketing Central utilizes Facebook's machine learning platform to continually optimize campaigns to produce better outcomes for you. As Marketing Central's adoption continues to increase, so to will the outcomes.
We'll share a few of the leading campaigns that ran in May and outline drivers of their success, but first, let's take a look at our COVID-19 analysis and how it has impacted advertising on Facebook.
COVID-19 Impact on Facebook Advertising
Since March, we have been keeping a close eye on the advertising landscape on Facebook and completed several month-over-month analyses that show COVID-19's impact on Real Estate Ads. This chart shows the month over month change in each performance metric.
February to March: 25% decline in CTR (an engagement metric), a cost per lead (CPL) increase of 15%, and a click to conversion rate (CVR) decrease of 18%. This shows a drop in buyer engagement and intent. AKA, less search traffic, less browsing.
March to April: Buyer intent came back in a strong way. This is showcased by a substantial 47% increase in conversions and a CPL reduction of 25%. However, CTR continued to fall by 9%. Simply put, fewer people clicked on ads, but the people who did had more intent to convert. (They were more motivated, hotter leads.)
April to May: CTR started to bounce back with a 15% increase. This boost in ad engagement made conversion rates skyrocket another 24%. As advertiser demand from other industries starts to return to Facebook, the time agents and brokers have to capitalize on this opportunity is shortening.
In May of this year, media costs on Facebook were 50% lower than they were in 2019.
Now let's take a look at some of the top-performing ad campaigns that ran through Marketing Central in May.
3 Top-Performing Ad Campaigns in May
1. A Single Image Listing Ad Generated 22 Leads for Less Than $20
BoomTown User Michele Claytor, with WelcomeHomeGreenville.com, spent $19.98 in May, promoting a new listing and created 22 leads for an astonishingly low $0.91 cost per lead.
She used "just listed" in the ad copy along with a front view of the home and property in a single image ad. The 12.89% CVR (conversion rate) and the 13.49% CTR (click-through-rate) are evidence of May's unique advertising environment on Facebook.
The Results:
22 leads from 1 ad 1,268 Impressions $0.91 Cost-Per-Lead 12.86% Conversion Rate $0.12 Cost-Per-Click 13.49% Click-Through-Rate
2. A Multiple Listing Ad Generated a 27.76% Click-Through-Rate
BoomTown user Sonny Downey, with EXIT Real Estate Gallery, used Marketing Central's "Re-Engage Your Leads" program to achieve an extremely high 27.76% CTR!
This program automatically matches the home attributes that your lead was searching for on your site to pre-populate MLS listings in a carousel ad unit. This advanced targeting tool matched with Sunny's engaging ad copy created Marketing Central's most engaging ad in May!
The Results:
92 leads re-engaged 7 new leads $1.61 Cost-Per-Lead $0.13 Cost-Per-Click 27.76% Click-Through-Rate
See Marketing Central in Action!
3. This BoomTown User Launched 20 Separate Facebook Programs in May
Brandon Brittingham of Maryland and Delaware Group of Long and Foster took advantage of May's low media rates on Facebook to launch programs that filled the top of his prospecting funnel! His mix of different programs included 15 single image/single listing programs, 3 re-engage registered leads programs, and 2 engage non-registered users' programs.
By activating these separate initiatives, he achieved the following:
(1) Stayed top of mind with registered leads who are familiar with his brand
(2) Created awareness for the people who visited his website but have not yet converted
(3) Served single listing ads to audiences of buyers to attract new visitors to his website
The Results:
121 new leads, 197 re-engaged leads 51,676 impressions $7.60 Cost-Per-Lead 4.79% Click-Through-Rate
Invest in Your Digital Presence
Here's the thing, digital presence has been critical for success in real estate for some years now. Because of COVID-19, we have to put even more of our efforts into digital presence and pivot in order to serve our clients virtually. The good news? Investing in your digital presence will serve you long after this time period, so your efforts will only improve the foundation of your business.
We encourage agents to "diversify their lead flow." That means, don't put all of your eggs in one basket when it comes to generating new business. Put a portion of your effort into your sphere, referrals, open houses, online leads, etc., that way if one of the lead sources runs dry, your business isn't disrupted. Right now, some of those other channels may be slow or even at a standstill. Meaning, it's the perfect time to bulk up your flow of online leads to supplement the rest.
Discover What's Possible with BoomTown!
Request a Demo
The post Facebook Advertising Trends & Tips for Real Estate Agents (During COVID-19) appeared first on BoomTown!.


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'Game of Thrones': Why Fans Are Siding with Sansa Stark Against Jon Snow and Daenerys Targaryen
Fans have been waiting for the main characters of Game of Thrones to meet and reunite. They got what they asked for in the Season 8 premiere, but Sansa Stark (Sophie Turner) isn't seeing eye to eye with Jon Snow (Kit Harington) and Daenerys Targaryen (Emilia Clarke.)
Fans are now taking sides! Find out why fans are siding with the Lady of Winterfell and more.
Sansa Stark isn't happy that Jon Snow is with Daenerys Targaryen
Season 8 of Game of Thrones started off with the episode, "Winterfell." The Stark family reunites, but are not totally on the same side. That's because Jon Snow introduced his new queen, Daenerys Targaryen to them.
The North isn't exactly trusting of outsiders with
Sansa, who is the Lady of Winterfell, brings up many reasonable concerns. Everyone is being asked to come to Winterfell to fight, but how will they be fed? How can Daenerys be trusted to be a kind leader after all she's done to rule all seven kingdoms? Is Jon Snow not actually thinking straight because of his feelings for Daenerys?
Fans are starting to side with Sansa
It looks like fans think Sansa is right to question Jon and Daenerys. They are making plans and assuming everyone else should go along with them.
Arya (Maisie Williams) also backed up her sister by calling her the smartest person she's ever met. She's a fan favorite so that kind of backing means a lot.
Fans think Daenerys is being too ruthless to stay queen
Daenerys isn't against using force to bring people to bend the knee. It has worked for her so far, but it might not work against the Starks. That's because they're a beloved family in the North and in the Game of Thrones fandom.
Daenerys already confronted Jon in "Winterfell" about Sansa saying "Your sister doesn't like me." She then said, "She doesn't need to be my friend but I am her queen. If she can't respect me…" The queen never finishes that thought but we can gather from her burning the Tarlys for not bending the knee that she wouldn't be against doing the same to Sansa.
Her decision to kill
Jon Snow is hesitant to believe it and said it would be treason for him to claim the throne. However, Samwell (John Bradley) said that Daenerys shouldn't be queen and wouldn't give up her crown to save her people.
Jon is left to make a huge decision and for now, the family is split on their feelings about Daenerys. Right now, it looks like fans are Team Sansa.
Read more: 'Game of Thrones': Will Jon Snow Die in Season 8?
Check out The Cheat Sheet on Facebook!


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Jen Lobo has spent a lot of time this year working on this project, which we've had to keep under wraps until recently. Jen illustrated the book titled The Story of Pines, written by musician Alison Sudol of A Fine Frenzy, and it has finally been released as an iBook. Jen's illustrations bring this story to life, and you can learn more about the book on iTunes. Here is a peek at just a few of Jen's beautiful drawings:
|Jen Lobo – The Story of Pines cover illustration
|Jen Lobo – Bird Intro illustrations
|Jen Lobo – Gathering Deer
|Jen Lobo – Flight
|Jen Lobo – Sailor Hands
|Jen Lobo – Whale Dance


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Monthly Archives: February 2019
Play and learn sensory group – for pre-school children
Craft and wellbeing sessions in Crosland Moor. Starting 7th March
Posted in Events, Good Information, Talk and Support Leave a comment
Planning for Future Living Events
At PCAN we understand that as our children with additional needs get older, our worries can increase. We plan for their education and schooling, their health needs, future education and work prospects. We want them to have access to all … Continue reading
Posted in Events, Good Information Leave a comment


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Police noticed a suspicious Arab girl (15) in Jerusalem's Old City, walking near the Moriah school, according to a TPS reportl.
Keeping a safe distance, the police stopped and searched her , discovering a knife hidden in her sleeve.
She was arrested and brought in for interrogation.
The girl admitted she planned to stab either a security person or a citizen.
After a background search, the police discovered that she had been stopped 2 weeks earlier and claimed she just bought the knives to take home.


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The Gigabyte GTX 1070 Ti Gaming OC 8G review
In November, BabelTechReviews purchased a Gigabyte GTX 1070 Ti Gaming OC 8G video card from Amazon for $489 for the purpose of testing GTX 1070 Ti SLI. Since then, we have reviewed the Red Devil RX Vega 56 versus the GTX 1070 Ti Founders Edition, and found it a worthy competitor even though the Adrenalin 17.14.4 drivers are somewhat unstable. It is natural to compare aftermarket versions against each other, and now that AMD has released stable 18.1.1 drivers, we are going to review the Gigabyte GTX 1070 Ti Gaming OC 8G versus the PowerColor Red Devil RX Vega 56 using 36 modern PC games.
The GeForce GTX 1070 Ti is NVIDIA's latest Pascal GPU that was released on November 2. It is similar to the GTX 1070 although it is more powerful and closer to the GTX 1080 in performance. The GTX 1070 Ti was set to launch starting at $449 to fit in-between the GTX 1070 and the GTX 1080 both in price and performance. The GTX 1070 Ti competes directly with AMD's RX Vega 56 which was originally supposed to retail for around $399. Unfortunately, the crypto-currency mining craze has decimated stock of most midrange and high-end GPUs, and unless you buy direct from NVIDIA or from partner stores, it is currently impossible to find video cards at suggested retail pricing
We are going to focus on the Gigabyte GTX 1070 Gaming OC Ti's performance against our PowerColor Red Devil RX Vega 56 which is also a premium AMD partner-designed video card. Above and below we see the massive Red Devil with 2×8-pin PCIe power connectors dwarfing the Gigabyte GTX 1070 Ti which only needs one 8-pin PCIe connector. Both cards each rely on custom tri-fan cooling, and Gigabyte uses the Windforce 3X design.Our testing platform is Windows 10 64-bit, using a Coffee Lake Intel Core i7-8700K overclocked to 4.7 GHz for all cores as set in the EVGA Z370 FTW motherboard's BIOS, and 16 GB of HyperX DDR4 at 3333MHz. The settings and hardware are identical except for the cards being tested. We benchmark 36 games and 4 synthetics, and we will compare gaming performance with maximum settings at 1920×1080, 2560×1440, and at 3840×2160.
The Gigabyte GeForce GTX 1070 Ti OC edition vs the non-OC edition
The Gigabyte GTX 1070 Ti Gaming OC 8G is the original edition that has a slightly higher factory overclock than that which was finally approved by NVIDIA (Gigabyte GTX 1070 Ti Gaming 8G). All editions of the GTX 1070 Ti are clocked the same, being differentiated mostly by design, component choice, and cooling. Here is our Founders Edition of the GTX 1070 Ti's steady 1809 MHz boost clocks looping Ultra/Extreme Heaven 4.0 at 2560×1440.
Since we got our card from the first 25,000 that were sent into retail, our Gigabyte factory original "OC" card boasts 26 MHz higher clocks than the GTX 1070 Ti Founders Edition as it is factory-clocked higher than all other aftermarket GTX 1070 Tis. We did not change the clocks nor update the BIOS, but instead we compared its performance with the Founders Edition of the GTX 1070 Ti and found the Gigabyte card to be only about 1-2% faster, so there is not a significant amount of performance gained from the extra 26 MHz. Even if the cards were clocked identically, we would still expect the Gigabyte edition to be slightly faster than the Founders Edition just because of better cooling. Our Founders Edition hits 84 C while our Gigabyte Gaming OC remains in the upper 70s C under identical conditions.
Here are the specifications from Gigabyte's website for the (non-OC) GTX 1070 Ti Gaming 8G:
The specifications are quite similar for all GTX 1070 Tis, but Gigabyte's Windforce 3 Cooling and other upgrades differentiate the Gigabyte GTX 1070 Ti Gaming 8G video card.
The Gigabyte GTX 1070 Ti Gaming 8G Features
The Gigabyte GTX 1070 Ti Gaming 8G edition video card features Windforce 3X cooling with 3 unique blade fans and 2 composite copper heat pipes with direct contact to the GPU for a cool-running card. And it does run significantly cooler and quieter than the Founders Edition of the GTX 1070 Ti.
The GTX 1070 Ti Gaming 8G boasts that it uses the same capacitors as the TITAN video cards, and the power delivery has been upgraded over the Founders Edition. In addition, Gigabyte's 3D Active Fan provides semi-passive cooling and the fans will remain off until the GPU comes under a heavy load which allows gamers to experience a completely silent video card at times. A LED fan indicator on the top of the graphics card provides a visual display of the fan status.
There is also RGB lighting on the card which can be coordinated by Gigabyte's AORUS software which also provides overclocking functionality. We will look closely at this software in an upcoming overclocking evaluation pitting the Gigabyte GTX 1070 Ti versus the PowerColor Red Devil RX Vega 56.
Overclocking the Gigabyte GTX 1070 Ti Gaming 8G Edition
We didn't spend a lot of time overclocking the Gigabyte GTX 1070 Ti further above its factory clocks but we were able to add an additional 210 MHz to the core clocks and 420 MHz to the memory.
As a comparison, we were able to add only 200 MHz to the Founders Editions core clocks and 400 MHz to the memory clocks and the card ran a lot louder and hotter. In a future evaluation we plan to spend more time fine-tuning our overclocks for our Red Devil RX Vega 56 versus Gigabyte GTX 1070 Ti OC Gaming 8G Showdown.
From what we have seen, the specifications of the Gigabyte GTX 1070 Ti Gaming 8G Edition are impressive, and our sample clocked significantly higher than NVIDIA's guaranteed GTX 1070 Ti clocks. Our limited edition OC version also clocks slightly higher than the Founders Edition or any other aftermarket GTX 1070 Ti.
Let's take a closer look at the Gigabyte GTX 1070 Ti (OC) Gaming 8G.


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Shamakhi Juma Mosque, one of the oldest Muslim temples in Azerbaijan, as well as in the South Caucasus and the Middle East, was built in 743 in honor of the arrival of khalifa Khalid ibn Waliyah's brother Muslim ibn Waliyah to Azerbaijan. According to some sources, the Khazar kagan, defeated by the Caliphate armies, embraced Islam in this mosque.
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The Armenian genocide was carried out in Shamakhi during March 1818 massacre by Armenian Dashnak groups. The biggest massacre took place at the Friday mosque. Seeing Shamakhi refugees in the mosque as the house of God, Armenians set fire to the area and killed about 1,700 innocent people. In Soviet times, the mosque, which was not used for designated reasons, was facing the threat of destruction. This historic monument was renovated in the 1980s on the initiative of great leader Heydar Aliyev, who attaches great importance to the development of Azerbaijan in all areas, including the protection of our national spiritual values. Shamakhi Friday Mosque has been renovated within the framework of the Heydar Aliyev Foundation's project "Address to Tolerance - Azerbaijan". The restoration and reconstruction works started in March 2010. President of the Republic of Azerbaijan Ilham Aliyev attended the opening ceremony of the mosque on May 17, 2013.
During the restoration and reconstruction work, the traditions of the Shirvan Architectural School have been given maximum attention to the restoration of the mosque with a total area of about one hectare. The entrance to the mosque, with a height of 36.4 meters, has been refined in the middle, large and right and left domes. The middle salon has been redesigned in the style of national architecture. Up to 1,500 people can worship at the same time. The madrassahs, cells and graves discovered during the repair work in the 70-80s of last century were preserved. Located in Shamakhi Seismic Zone, the foundation of the mosque is strengthened with reinforced concrete structures.
The courtyard of the mosque has been renovated, two pools have been built, and six galleries have been created. The two-storey administrative building area is 804 square meters. There is a conference room and a rich library in the mosque. The 520-square-foot apartment houses a 250-seat ceremony and a modern kitchen. Major renovations have also been done around the Shamakhi Juma Mosque's State Historical and Architectural Monument.


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Hogwarts Legacy (PS4)
Release Date: 10 February 2023
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Warner Bros. Games announced Hogwarts Legacy, an open-world, single- player, action role-playing videogame (RPG) set in the 1800s wizarding world. Players will experience life as a student at Hogwarts School of Witchcraft and Wizardry like never before, as they live the unwritten and embark on a dangerous journey to uncover a hidden truth of the wizarding world. Developed by Avalanche and published by Warner Bros. Games under the Portkey Games label, Hogwarts Legacy will release in 2021 for PlayStation®5, PlayStation®4, PlayStation®4 Pro, Xbox Series X, Xbox Series S, Xbox One consoles, and PC.
Hogwarts Legacy is filled with immersive magic, putting players at the centre of their adventure to become the witch or wizard they choose to be. They will grow their character's abilities as they master powerful spells, hone combat skills and select companions to help them face off against deadly enemies. Players will also encounter missionsand scenarios that will pose difficult choices and determine what they stand for.
Release Date: 10 February 2023
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Research Article | Open Access
Huimin Gong, Changhui Zhao, Gaoqiang Niu, Wei Zhang, Fei Wang, "Construction of 1D/2D α-Fe2O3/SnO2 Hybrid Nanoarrays for Sub-ppm Acetone Detection", Research, vol. 2020, Article ID 2196063, 11 pages, 2020. https://doi.org/10.34133/2020/2196063
Construction of 1D/2D α-Fe2O3/SnO2 Hybrid Nanoarrays for Sub-ppm Acetone Detection
Exhaled acetone is one of the representative biomarkers for the noninvasive diagnosis of type-1 diabetes. In this work, we have applied a facile two-step chemical bath deposition method for acetone sensors based on α-Fe2O3/SnO2 hybrid nanoarrays (HNAs), where one-dimensional (1D) FeOOH nanorods are in situ grown on the prefabricated 2D SnO2 nanosheets for on-chip construction of 1D/2D HNAs. After annealing in air, ultrafine α-Fe2O3 nanorods are homogenously distributed on the surface of SnO2 nanosheet arrays (NSAs). Gas sensing results show that the α-Fe2O3/SnO2 HNAs exhibit a greatly enhanced response to acetone (3.25 at 0.4 ppm) at a sub-ppm level compared with those based on pure SnO2 NSAs (1.16 at 0.4 ppm) and pure α-Fe2O3 nanorods (1.03 at 0.4 ppm), at an operating temperature of 340°C. The enhanced acetone sensing performance may be attributed to the formation of α-Fe2O3–SnO2 n-n heterostructure with 1D/2D hybrid architectures. Moreover, the α-Fe2O3/SnO2 HNAs also possess good reproducibility and selectivity toward acetone vapor, suggesting its potential application in breath acetone analysis.
1. Introduction
As a potential alternative for the noninvasive diagnosis of disease, exhaled breath analysis has been proposed and developed over the past decades [1–3]. The exhaled breath of human beings includes not only nitrogen, oxygen, carbon dioxide, nitric oxide, and water vapor but also a mixture of volatile organic compounds (VOCs) and some other nonvolatile molecules. Encouragingly, a few of them have been regarded as biomarkers to diagnose diseases (Table S1). For example, formaldehyde (lung cancer) [4], toluene (lung cancer) [5], ammonia (hemodialysis) [6], H2S (halitosis) [7], isoprene (heart disease) [8], benzene (smoker) [9], and pentane (acute asthma) [10] at few dozens to few thousands of ppb are known as biomarkers for patients. Researchers have also found that exhaled acetone can intuitively correlate with type-1 diabetes, which may exceed 1.8 ppm (only 0.3–0.9 ppm for healthy people) [1, 11]. Therefore, an ultrasensitive acetone sensor is of great importance to detect acetone vapor at a sub-ppm level.
Metal oxide semiconductors (MOXs), such as SnO2, ZnO, α-Fe2O3, CuO, and NiO, have been widely explored in the field of gas detection owing to their simple and cost-effective synthesis, high sensitivity, and good stability. Among these MOXs, α-Fe2O3 is a multifunctional n-type semiconductor with a direct bandgap ( at 300 K) that has been intensively investigated in the field of gas sensing [12–15]. Several effective strategies have been designed to improve the gas sensing properties of these MOXs, such as doping, surface modification, porous/hollow structures, and hierarchical architectures [16–18]. Recently, construction of hybrid nanostructures is rapidly emerging as a fascinating strategy that combines different MOXs with precise control of their morphologies, such as hollow ZnO/ZnFe2O4 heterostructures that were synthesized by growing ultrathin ZnFe2O4 nanosheets on the outer surface of ZnO hollow microspheres [19], NiO nanoparticle-decorated SnO2 nanosheets [20], CuO nanosheets/ZnO nanorods (NRs) [21], and Fe2O3 nanoparticle-decorated CuO NRs [22]. For this purpose, the rational combination of SnO2 and α-Fe2O3 has been proven to improve their gas sensing performances (Table S2). The results show that the α-Fe2O3/SnO2 composites present excellent sensing performances to acetone [23, 24], ethanol [25–30], toluene [31], and LPG [32, 33]. Moreover, their gas sensing properties can be largely affected by the size and shape of nanobuilding blocks (α-Fe2O3 and SnO2). As far as we know, only a few reports about α-Fe2O3–SnO2 system have concerned on the detection of ultralow concentrations of acetone.
In this work, we report a two-step chemical bath deposition (CBD) method to construct the α-Fe2O3/SnO2 hybrid nanoarrays (HNAs) on-chips with subsequent annealing in air. The one-dimensional (1D) α-Fe2O3 NRs are distributed homogenously on the surface of the 2D SnO2 nanosheets to construct novel 1D/2D HNAs. In comparison with pure SnO2 NSAs and α-Fe2O3 NRs, the α-Fe2O3/SnO2 HNAs show a dramatically enhanced response to acetone (down to sub-ppm). Moreover, the α-Fe2O3/SnO2 HNAs also possess a superior selectivity to acetone against other interfering gases (formaldehyde, toluene, benzene, and ammonia). A possible sensing mechanism based on the formation of α-Fe2O3–SnO2 n-n heterostructure is proposed.
2. Results and Discussion
2.1. Morphological Characteristics
As illustrated in Figure 1(a), a chip with interdigital Au electrodes (200 μm lines separated by 200 μm gaps) was fabricated on a (100) silicon substrate with a 2 μm thermally grown SiO2 layer, and the SnO2 NSAs were prepared with an on-chip growth method similar to our previous work [34]. The chip was vertically dipped into the mixed solution (containing Sn2+ and CO(NH2)2) during this process, and then the prefabricated SnO2 NSAs were immersed in another aqueous solution (containing Fe2+ and CO(NH2)2) for depositing FeOOH NRs on SnO2 NSAs. After annealing in air, the as-prepared sensors were placed on a CGS-4TP gas sensing measurement system. A schematic of the gas sensing measurement systems used in this work is illustrated in Figure S1. Figure 1(b) presents a schematic diagram of the test platform used in this work. A hotplate was used to adjust the operating temperature, and two pins of a sensor were connected with a pair of probes. A digital photograph of the gas sensing chip ( in size) with α-Fe2O3/SnO2 HNAs is given in the inset of Figure 1(b). During the test, four sensors were measured simultaneously, as shown Figure 1(c), and the electrical resistance of each sensor was recorded.
Figure 2 shows the morphologies of as-prepared pure SnO2 NSAs and α-Fe2O3/SnO2 HNAs. It can be seen from Figure 2(a) that the pure SnO2 NSAs are composed by oriented growth of nanosheets, where the adjacent SnO2 nanosheets will interconnect with each other and form a semiopen network. From the cross-sectional scanning electron microscope (SEM) images of SnO2 NSAs (Figure 2(b)), the flake-like SnO2 stands vertically on the chip with a uniform film thickness (~100 nm), and the SnO2 NSAs are robustly adhered to the substrate. After the growth of α-Fe2O3 NRs, it is obvious that the surface morphology of α-Fe2O3/SnO2 HNAs is much different from that of the pure SnO2 NSAs. As shown in Figure 2(c), numerous ultrathin α-Fe2O3 NRs are homogenously distributed among the interconnected SnO2 NSAs. A SEM close-up image of α-Fe2O3 NRs (inset Figure 2(c)) reveals that the diameter of NRs ranges from 9 nm to 20 nm, and the average diameter is about 12.7 nm. Otherwise, for the second-step (CBD method), the α-Fe2O3 NRs tend to form irregular aggregates without a substrate (Figure S2). The cross-sectional SEM images of α-Fe2O3/SnO2 HNAs in Figure 2(d) further indicate that the 1D α-Fe2O3 NRs are in situ grown on the surface of 2D SnO2 nanosheets, and novel 1D/2D hybrid nanoarrays can be achieved by a facile two-step CBD method. At the same time, the average film thickness of α-Fe2O3/SnO2 HNAs increases up to 220 nm.
To get further insight into the definite morphology of pure SnO2 NSAs and α-Fe2O3/SnO2 HNAs, transmission electron microscope (TEM) images were taken from the scraped-off products. As shown in Figure 2(e), SnO2 NSAs made up of interconnecting flakes with a thickness of <10 nm are obtained. Because of the vertical direction of growth, the thickness of a SnO2 nanosheet can be easily measured in Figure 2(e) (marked by arrows, ~8 nm). These 2D nanosheets have an edge length of tens of nanometers, which agree well with the SEM observation (Figure 2(a)). A high-resolution TEM (HRTEM) image (Figure 2(f)) reveals the fringe patterns in SnO2 NSAs, and the -spacings of 0.264 and 0.336 nm are assigned to the interplanar distances of (101) and (110) planes of rutile SnO2, respectively.
For α-Fe2O3/SnO2 HNAs, the overall TEM image (Figure 2(g)) indicates that the hybrid composites are constructed by interconnected 2D nanosheets and some disordered 1D nanorods with respect to their different structural features. The inset of Figure 2(g) shows an individual nanorod grown on the surface of the nanosheet. The diameter of the rod is around 9 nm, and the length is estimated to be 57 nm. Figure 2(h) provides the HRTEM image of the selected region from the inset of Figure 2(g) (marked by a dashed rectangle). The lattice fringes with -spacings of 0.270 and 0.336 nm can be indexed to the (104) plane of α-Fe2O3 and (110) plane of SnO2, respectively. These results further confirm the construction of the 1D/2D hybrid nanostructure of α-Fe2O3/SnO2 HNAs.
The chemical composition of the samples was identified by EDS and XPS analysis. The EDS mapping and spectrum of α-Fe2O3/SnO2 HNAs are depicted in Figures 3(a)–3(c) and 3(d), respectively. Sn (Figure 3(b)) and Fe (Figure 3(c)) elements were distributed randomly and uniformly on the substrate, which was in agreement with the fact that the hybrid composites were constructed by hybrid α-Fe2O3 and SnO2. The existence of Sn and Fe elements was confirmed by the EDS characterization, and the atomic percentages of Sn and Fe were measured to be 5.38% and 4.17%, respectively.
Moreover, XPS analysis was used to obtain more information about the chemical valences of our samples. Figure 4(a) displays the high-resolution Sn 3d spectra of SnO2 NSAs and α-Fe2O3/SnO2 HNAs. In the pure SnO2 NSAs, the two peaks centered at 487.4 and 495.8 eV can be ascribed to the peaks of Sn 3d5/2 and Sn 3d3/2, respectively, which are in good agreement with Sn4+. With the modification of α-Fe2O3, a slight negative shift of the binding energies is observed in α-Fe2O3/SnO2 HNAs, shifting to 487.3 and 495.7 eV, respectively, as a result of the formation of α-Fe2O3/SnO2 heterojunction interface. In the spectrum of Fe 2p in Figure 4(b), interference peaks are detected at 717.6 eV in SnO2 NSAs and 716.5 eV in α-Fe2O3/SnO2 HNAs, which come from the Sn 3p peak. The Fe 2p peaks are not found in α-Fe2O3/SnO2 HNAs due to the strong interference peak. In comparison, the two peaks at 711.9 and 725.2 eV detected in pure α-Fe2O3 NRs are attributed to Fe 2p3/2 and Fe 2p1/2, respectively, corresponding to Fe3+ in α-Fe2O3.
2.2. Gas Sensing Properties
As is well-known, the gas sensing properties of MOXs are highly dependent on the operating temperature. To confirm it, the as-prepared gas sensors were examined at various temperatures (280-380°C) toward 5 ppm acetone. The sensor response is defined as , where and are the sensor resistance in air and target gas, respectively. As shown in Figure 5(a), the response of α-Fe2O3/SnO2 HNA-based sensor increases with the increase in operating temperature and reaches its maximum value (13.63) at 340°C, then decreases with the further increase of operating temperature. Therefore, 340°C can be chosen as the optimum operating temperature of α-Fe2O3/SnO2 HNAs. Differently, the pure SnO2 NSA-based sensor exhibits no obvious variation over the whole temperature range (2.00, at 340°C). The pure α-Fe2O3 NR-based sensor shows a monotonic decrease of the response with an increase in operating temperature, and the highest response value is about 4.28 at 280°C. It is clear that the α-Fe2O3/SnO2 HNA-based sensor displays the highest response in the three sensors, revealing that the acetone sensing properties of SnO2 NSAs can be significantly enhanced by the modification of α-Fe2O3 NRs.
Figure 5(b) gives the acetone sensing properties of the above three sensors at the same operating temperature of 340°C. It is clear that the sensor response increases with the acetone concentration ranging from 0.4 to 20 ppm for each sensor. Especially, in the case of α-Fe2O3/SnO2 HNAs, the response increases rapidly over the whole concentration range, which is rather different from the other two sensors. The response values of α-Fe2O3/SnO2 HNAs are 3.25, 4.64, 5.37, 7.68, 9.91, 10.69, 12.34, 16.55, and 21.26 toward 0.4, 0.8, 1, 2, 3, 4, 5, 10, and 20 ppm acetone, respectively. In comparison, the response values of pure SnO2 NSAs and α-Fe2O3 NRs toward acetone can be as low as 1.16 and 1.03, respectively, at a concentration of 0.4 ppm, and their values are still less than 3.1 even toward 20 ppm acetone. Therefore, the α-Fe2O3/SnO2 HNA-based sensor exhibits the highest response values toward acetone in the three sensors, indicating the improvement of sensitivity.
Figure 5(c) plots the corresponding transient response curves of the pure SnO2 NSA- and α-Fe2O3/SnO2 HNA-based sensors over an acetone concentration range of 0.4 to 20 ppm recorded at 340°C. Obviously, these response curves present a sharp increase upon acetone exposure and can recover to their original values in air. In accordance with these, the sensor resistance curves are shown in Figures 5(d) and 5(e). Amongst them, the α-Fe2O3/SnO2 HNA-based sensor exhibits a higher resistance in air (, 282.683 MΩ, Figure 5(e)) than that of pure SnO2 NSAs (204.05 kΩ, Figure 5(d)) and α-Fe2O3 NRs (132.298 MΩ, Figure S3(b)). Upon exposure to acetone gas, the sensor resistance quickly decreases as expected and then recovers to its after being exposed to air. decreases monotonically with the increase of acetone concentration; in other words, the sensor response increases (refer to Figure 5(c) and Figure S3(a)).
The response and recovery times ( and ) are very important parameters for high-performance gas sensors. The response time (or recovery time ) is defined as the time required to reach 90% resistance change when the sensor is exposed to target gas (or air). As shown in Figure S4, the α-Fe2O3/SnO2 HNA-based sensor shows a faster (14 s, at 1 ppm) at 340°C compared with that of the SnO2 NSAs (37 s, at 1 ppm). On the contrary, the of the α-Fe2O3/SnO2 HNA-based sensor always exceeds one minute (62–159 s, in the range 0.4–20 ppm), which is apparently higher than that of the SnO2 NSA-based sensor (22–34 s, in the range 0.4–20 ppm). According to the previous studies, the vertically ultrathin SnO2 NSAs can provide as much surface area as possible to adsorb gas molecules and facilitate the adsorption/desorption of the acetone gas. When the α-Fe2O3 NRs were introduced, the branched α-Fe2O3 NRs on the surface of SnO2 NSAs will adsorb more acetone molecules, making the α-Fe2O3/SnO2 HNAs more sensitive and present faster response toward acetone.
To study the selectivity in the above sensors, some interfering gases (formaldehyde, toluene, benzene, and ammonia) were measured at 340°C with a low concentration of 1 ppm. It can be seen in Figure 5(f) that the α-Fe2O3/SnO2 HNA-based sensor exhibits higher responses toward all gases than those of pure SnO2 NSAs and α-Fe2O3 NRs. Especially, all the sensors obtain their highest responses toward acetone compared with other interfering gases. In the case of the α-Fe2O3/SnO2 HNA-based sensor, it shows the highest response toward acetone (5.37), then toward formaldehyde (1.23) and toluene (1.16) and is almost insensitive toward ammonia (1.11) and benzene (1.09). On the other hand, the corresponding responses of pure SnO2 NSAs toward above gases are 1.33, 1.02, 1.02, 1.02, and 1.01 in turn (for α-Fe2O3 NRs: 1.30, 1.03, 1.02, 1.03, and 1.03). These results suggest that the α-Fe2O3 NRs, indeed, have a significant impact on the selectivity of the SnO2 NSAs toward acetone.
The reproducibility of the sensors at 340°C has been investigated by continuously testing the sensors to 5 ppm and 1 ppm acetone with 5 cycles for each. As shown in Figures 6(a)–6(c), all the sensors maintain their response values without obvious variation (less than 4%) during the cyclic testing, indicating excellent reproducibility of our devices. By comparison, Figure 6(d) illustrates the statistical analysis of the results of sensor responses (for SnO2 NSAs sensor: at 1 ppm and at 5 ppm; α-Fe2O3 NRs sensor: at 1 ppm and at 5 ppm; α-Fe2O3/SnO2 HNAs sensor: at 1 ppm and at 5 ppm), further demonstrating their robustness as acetone sensors.
To assess the long-term stability of our sensor, we tested the α-Fe2O3/SnO2 HNA-based sensor for 93 days toward 5 ppm acetone at 340°C. The mean response of the α-Fe2O3/SnO2 HNA-based sensor is 11.62 with a standard deviation estimated to be 0.93 during the whole period, suggesting its stability for acetone detection over a long period. Furthermore, it can be clearly seen that there is no obvious change between the nanostructures of α-Fe2O3/SnO2 HNAs before (Figure 2(c)) and after (inset of Figure 6(e)) a number of gas sensing tests. This observation is consistent with the good long-term stability of the α-Fe2O3/SnO2 HNA-based sensor.
It is well-known that human exhaled breath is highly humid () and the existence of water vapor has a significant influence on the gas sensing performance for MOX-based gas sensors. As shown in Figure 6(f), the response of α-Fe2O3 NRs to 5 ppm acetone was measured as a function of relative humidity (20%–90% RH). The responses of α-Fe2O3/SnO2 HNAs under 20%, 40%, 60%, 80%, and 90% RH were 12.34, 6.02, 4.69, 3.86, and 3.62, respectively. Obviously, the response of α-Fe2O3/SnO2 HNAs is highly dependent on relative humidity, and some available approaches (such as employing water filtering membranes) are needed to eliminate the influence of water vapor.
Considering the previous reports in Table 1 [11, 35–38], the α-Fe2O3/SnO2 HNA-based sensor in this work possesses relatively medium sensitivity (or operating temperature). We can conclude that the acetone sensing properties of MOXs can be further enhanced by constructing heterostructures or modifying with noble metals. As mentioned before, the acetone detection capability (or resolution) for the diagnosis of diabetes mellitus should be as low as sub-ppm, all of which need sufficient and reliable sensors for acetone. In this sense, the high sensitivity, good selectivity, and excellent reproducibility of the α-Fe2O3/SnO2 HNA-based sensor imply that it can potentially be used for breath acetone analysis.
2.3. Sensing Mechanism
For n-type MOXs (SnO2 and α-Fe2O3), their acetone sensing mechanisms can be briefly understood as the reaction between the adsorbed oxygen species and acetone molecules on the active sites of sensitive materials. [24] In general, an electron depletion layer (EDL) can be formed on the near surface of SnO2 nanosheets (Figure 7(a)) owing to the adsorbed oxygen species (O–, O2–, and O2–) after exposing to air and makes the absorbed oxygen species capture free electrons from the conduction band of SnO2. This results in a decrease of electron concentration (or width of EDL) and thus a relatively high resistance in air atmosphere. The generation and transformation processes of the oxygen species at different operating temperatures have the following expressions [39]:
On the contrary, upon exposure to reducing gases such as acetone, acetone molecules will react with the absorbed oxygen species, as expressed by Equation (2) and release free electrons back to the SnO2 nanosheets. Hence, the electron concentration increase will cause an increase in conductivity (or a decrease in sensor resistance), and the width of EDL also becomes broader. According to the SEM and TEM observations, the vertically distributed SnO2 nanosheets connect with each other to construct an interlaced electron transport network on the substrate. However, the modulation mechanism of this type of transport network is not efficient because of the same energy band structure in the pure SnO2 NSAs. In other words, the of the pure SnO2 NSA-based sensor is rather low (Figure 5(d)), which is too difficult to obtain dramatic change, especially at low acetone concentrations.
In the case of α-Fe2O3/SnO2 HNAs, the sensor exhibits enhanced sensitivity toward acetone, this may be attributed to the following reasons: (1) In the formation of α-Fe2O3–SnO2 n–n heterostructures, by combining these two MOXs with different work functions (SnO2: ; α-Fe2O3: ) [40, 41], the free electrons tend to transfer from the higher side to the lower side, until the equilibrium Fermi level is reached (Figure 7(c)) [26, 42]. In this process, the SnO2 nanosheet near the heterostructure interface will lose more electrons, which leads to a broader conduction region in air (Figure 7(b)) [43]. Similar to other reports, the of the α-Fe2O3/SnO2 HNAs in this work is much higher than that of the pure SnO2 NSAs.
(2) In the novel 1D/2D α-Fe2O3/SnO2 hybrid architectures, when the sensor is exposed to acetone, the stretched-out α-Fe2O3 NRs provide an extra surface area and active sites for the gas adsorption. Thus, more oxygen species and acetone molecules can be adsorbed on the surface of α-Fe2O3/SnO2 HNAs (Figure 7(b)), which provides more opportunities for Equation (2). The conduction region in SnO2 nanosheets will be broadened as well as a decrease in . On the other hand, the free electrons generated on the surface of α-Fe2O3 NRs will flow to SnO2 NSAs and allow a dramatic decrease in the width of the electron depletion region at the interface of the α-Fe2O3/SnO2 heterostructure. It may further result in an increase of sensor response toward acetone. So the modulation mechanism of α-Fe2O3/SnO2 HNAs becomes more efficient than that of pure SnO2 NSAs. Additionally, much hard work is still needed to study the influence of ambient humidity, filter units, and clinical tests, making it more suitable for breath acetone analysis.
3. Conclusion
The α-Fe2O3/SnO2 HNA-based acetone sensor has been fabricated via a facile two-step on-chip growth (or CBD method) process. The results indicate that the as-prepared sensor presents a well-defined 1D/2D hybrid architecture, where the ultrathin α-Fe2O3 NRs (an average diameter ~12.7 nm) are distributed among the interconnected SnO2 NSAs. Gas sensing measurements show that the α-Fe2O3/SnO2HNA-based sensor exhibits superior acetone sensing properties (high sensitivity, good reproducibility, and selectivity), even at a sub-ppm level, compared with those of the pure SnO2 NSA- and α-Fe2O3 NR-based sensors. The improved acetone sensing performance may be due to the formed α-Fe2O3–SnO2 heterostructures and their unique hybrid nanostructures. Our work suggests that the α-Fe2O3/SnO2 HNAs can be a promising candidate for sub-ppm acetone detection in breath analysis.
4. Materials and Methods
4.1. Preparation of α-Fe2O3/SnO2 HNAs
In brief, 0.6 mmol SnCl2·2H2O and 0.8 mmol CO(NH2)2 were dissolved into 20 mL deionized water and stirred for 15 min at room temperature. Then a piece of chip with several Au electrodes was washed with acetone and ethanol and deionized water for several times, which was afterwards vertically dipped into the above solution and maintained at 95°C for 8 h. After washing and drying at 60°C in an oven, the prefabricated SnO2 NSAs were immersed in an aqueous solution (containing 0.1 M FeSO4·7H2O and 1.0 M CO(NH2)2) and kept at 80°C for 1 h. Similarly, the chip was washed and dried again at 60°C. The final chip was annealed at 400°C for 3 h in air to achieve α-Fe2O3/SnO2 HNAs.
In addition, the pure SnO2 NSAs were also annealed under the same conditions. For a pure α-Fe2O3 NR-based sensor, 0.1 M FeSO4·7H2O and 1.0 M CO(NH2)2 were mixed and maintained at 80°C for 1 h, and the collected precipitate was dip-coated on the Au electrodes and then annealed at 400°C in air for 3 h.
4.2. Characterization and Gas Sensing Measurements
The morphologies and compositions of as-prepared products were investigated by a scanning electron microscope (SEM, Zeiss Gemini 300) equipped with energy dispersive X-ray (EDX) spectroscope and a high-resolution transmission electron microscope (HRTEM, FEI Tecnai G2 F30). The chemical states of the surface species were determined by using X-ray photoelectron spectroscopy (XPS, ESCALB 250Xi). The gas sensing properties of sensors were performed on a commercial CGS-4TPs system (Beijing Elite Tech Co., Ltd., China). Gaseous acetone diluted with dry air was injected by a syringe. The operating temperature ranges from 280 to 380°C with a relative humidity around 20%.
Conflicts of Interest
All authors declare that there is no competing financial interest.
Authors' Contributions
Huimin Gong, Changhui Zhao, and Fei Wang designed the experiments and contributed to the manuscript. Gaoqiang Niu and Wei Zhang carried out the material characterizations. The initial draft was edited by Changhui Zhao and Fei Wang. All authors reviewed the final version.
The TEM characterization was performed in the Materials Characterization and Preparation Center, Southern University of Science and Technology. This work was supported in part by the Shenzhen Science and Technology Innovation Committee under Grant JCYJ20170412154426330; the Foundation for Distinguished Young Talents in Higher Education of Guangdong, China, under Grant 2018KQNX226; and Guangdong Natural Science Funds under Grants 2016A030306042 and 2018A050506001.
Supplementary Materials
Figure S1: schematic drawing of the gas sensing measurement systems. Figure S2: SEM images of pure α-Fe2O3 NRs. Figure S3: transient response curve of α-Fe2O3 NRs toward different acetone concentrations at 340°C and the corresponding resistance curve. Figure S4: response/recovery time vs. acetone concentration (0.4-20 ppm) with SnO2 NSAs and α-Fe2O3/SnO2 HNAs at 340°C. Table S1: brief summary of results reported on exhaled breath analysis. Table S2: gas sensing properties of Fe2O3–SnO2 systems toward various gases. (Supplementary Materials)
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text: Rob McElhenney is out with his friends and he is not wearing his shirt. he has large muscles and he likes it when ppl around him watch them. The dude also has a large bulge in his pants and he does not attempt to hide it in any way while he is having fun outdoors. He likes getting all this attention.


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Bayern Munich Once Again Lower Price Tag For Javi Martínez
Everything points to Javi Martínez returning to Athletic this summer. It may not happen within the next few days, but appears inevitable. The 32-year-old wants to go back to San Mamés and is doing his part to help push through a transfer. Martínez has already asked Bayern Munich to help facilitate the move and is willing to lower his wages to sign with Athletic.
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With the transfer window still open through 5 October, Athletic and Bayern have plenty of time to get a deal done. The Germans want to sell for the highest price possible while Athletic are holding out for the best deal. Ultimately, it seems as though it's just a matter of time before the two sides reach an agreement.
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There are two welcome bonuses available on the Silver Oak Casino site, and these are very different so you are advised to choose carefully. The lesser of the two bonuses is a no-deposit bonus, where new players can earn up to $100 in free credits without depositing any money. However, there is a significantly better bonus that offers all first-time depositors up to $10,000 in free cash, paid out over the course of their first ten deposits. As these are 100% matched deposit bonuses, it basically means that all of your deposits will be doubled up to $1,000 each time.
If you deposit $100 a time then this means you will earn an extra $1,000 over the course of your first ten deposits, whilst if you deposit $1,000 at a time then you'll be able to cash in on the complete $10,000.
That's not where the bonuses end on Silver Oak Casino, as there are many more promotions to take advantage of. These include slot tournaments, happy hours and more. Just click onto the "Promotions" section of the site to checkout all of these, and bear in mind that they are constantly changing, so just because a promotion is available today, doesn't mean that it will be available tomorrow.
Silver Oak Casino also like to reward loyal players. There is a loyalty scheme that does this steadily, but there are also other ways that loyal players can earn a little extra. One of these is Bankroll Protection, which basically gives you a 10% rebate on your losses, helping you to offset that occasional run of bad luck that we all suffer through from time to time.


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January 2023 marks the 10th anniversary of our beloved Ghanshyam Maharaj. To celebrate the event, our Mandir will be hosting 7-day event from 9th January 2023 to 15th January 2023. The event will be attended by devotees all around the Globe. For those who require Visa Invitation Letter for Visa processing purposes, the devotee can complete the form below to receive the letter
Visa letter requests should be made 60 days prior to the start date of Patotsav. Provision of a Visa Invitation letter by Shree Swaminarayan Temple (Mandir) Perth Australia does not guarantee visa approval, which is made at the sole discretion of the Government of Australia.
For any queries, please contact us on [email protected]|| Jay Shree Swaminarayan ||
Upcoming events
10th Patotsav Utsav Celebrations


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Covid-19 is still a threat. Please do not attend any gathering until your country's social distancing restrictions have been lifted.
All juggling events in 2012
Juggling events in Australia, 2012
Saturday, 2012-04-07 to Monday, 2012-04-09
Fremantle Street Arts is a curated festival which occurs at Easter time every year. There are limited spaces available but if you would like to register your interest in performing please visit the City of Fremantle website. This is your chance to show us your best stuff and sell to us why you should be considered in 2013.
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Blue Orange Battle sheep
by Blue Orange
Save 37% Save 37%
Original price Rs. 2,395.00
Original price Rs. 2,395.00 - Original price Rs. 2,395.00
Original price Rs. 2,395.00
Current price Rs. 1,499.00
Rs. 1,499.00 - Rs. 1,499.00
Current price Rs. 1,499.00
(Inclusive of all taxes)
Ages 7 to ADULT
Play Time: 15 minutes
Opposing sheep herds go head to fluffy head in a strategy game the whole family will love. The goal is to occupy the most pastures with your sheep. Each turn, players split a stack of their sheep and move a portion as far is it can go in a straight line to a new pasture. Watch out for sneaky sheep and plan your moves carefully to fence out your foe! A different playing board is assembled before every game, so Battle Sheep is full of new challenges every time you play!
- 2,3 or 4 Players Strategy Game High replay value; build a unique game board with every new game!
- Introduces kids to abstract thinking and strategy; The humorous sheep illustrations add a fun personality to the game
- Includes 16 pasture boards and 64 high quality sheep chips
Skills: Social Play Abstract Thinking Strategy Focus & Attention
Contents: 16 Pasture Boards 64 Sheep Tokens