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APC: Only $99 Submit 2019 ( 93 ) 2018 ( 566 ) 2017 ( 556 ) 2016 ( 797 ) Search Results: 1 - 10 of 462011 matches for " José J. F.;Andrade " All listed articles are free for downloading (OA Articles)  Page 1 /462011 Display every page 5 10 20 Item  Physics , 2007, DOI: 10.1103/PhysRevE.76.026111 Abstract: We investigate a set of directed sandpile models on the Apollonian network, which are inspired on the work by Dhar and Ramaswamy (PRL \textbf{63}, 1659 (1989)) for Euclidian lattices. They are characterized by a single parameter$q$, that restricts the number of neighbors receiving grains from a toppling node. Due to the geometry of the network, two and three point correlation functions are amenable to exact treatment, leading to analytical results for the avalanche distributions in the limit of an infinite system, for$q=1,2$. The exact recurrence expressions for the correlation functions are numerically iterated to obtain results for finite size systems, when larger values of$q$are considered. Finally, a detailed description of the local flux properties is provided by a multifractal scaling analysis.  Health (Health) , 2015, DOI: 10.4236/health.2015.710138 Abstract: Objective: The present work aims to evaluate the impact of the activities of nursing consultations on health conditions of children served in Clínica de Enfermagem Salvando Vidas com Educa??o. Methods: This is an exploratory, descriptive study with a quantitative approach, realized from January through December 2012, at the Clínica de Enfermagem (Nursing Clinic), in the Santa Cruz County, Rio Grande do Norte’s countryside, Brazil. Results: The obtained results showed a significant correlation between the type of pathology and final treatment proven by the value of p = 0.000; as for assessed 60%, more than half were discharged; the most prevalent diseases were the association between cutaneous and gastric with 11% who were discharged and, lastly, the association between gastric and respiratory with 7% discharged. Conclusion: Thus, the activities developed by the project are not restricted to the examination during the nursing consultation, since educational activities are planned from the data obtained in those consultations.  Journal of the Brazilian Chemical Society , 2012, DOI: 10.1590/S0103-50532012000600010 Abstract: in this work, the synthesis of dimeric, trimeric and tetrameric d-galactose-based neoglycoconjugates is reported. the monosaccharide ligand was prepared in 5 straightforward steps from d-galactose using the doebner modification of the knoevenagel reaction for chain elongation. the ligand was coupled to 1,4-butanediamine, tris-(2-ethylamino)amine, pentaerythrityltetramine and pamam dendrimers (1,4-butanodiamine core g0 and 1,12-dodecanediamine core g0). the unprotected glycodendrimers were purified by size-exclusion chromatography (sec). this was the only step in which a chromatographic method was employed throughout the synthetic route. this is a new and efficient strategy for the preparation of neoglycoconjugates.  Physics , 2009, DOI: 10.1103/PhysRevLett.103.194502 Abstract: We investigate the flow of various non-Newtonian fluids through three-dimensional disordered porous media by direct numerical simulation of momentum transport and continuity equations. Remarkably, our results for power-law (PL) fluids indicate that the flow, when quantified in terms of a properly modified permeability-like index and Reynolds number, can be successfully described by a single (universal) curve over a broad range of Reynolds conditions and power-law exponents. We also study the flow behavior of Bingham fluids described in terms of the Herschel-Bulkley model. In this case, our simulations reveal that the interplay of ({\it i}) the disordered geometry of the pore space, ({\it ii}) the fluid rheological properties, and ({\it iii}) the inertial effects on the flow is responsible for a substantial enhancement of the macroscopic hydraulic conductance of the system at intermediate Reynolds conditions. This anomalous condition of enhanced transport'' represents a novel feature for flow in porous materials.  Engenharia Agrícola , 2011, DOI: 10.1590/S0100-69162011000300014 Abstract: the general objective was to show the economic and technical impact in soil and nutrient loss through erosion in the cultivation of sugar cane. it was specifically to evaluate the nutrient loss through erosion (p, k, ca and mg), the cost of replacing the nutrients and the production of sugar cane in two harvesting systems (raw and burned sugar cane) in catanduva, state of s？o paulo, brazil. an area of 100 ha was studied for each system, formed and harvested in the same period (2002 and 2007), with similarities in the type of soil, variety, topography, and the number of cuts. the methodology was based on the universal equation of soil loss and the theory of production costs and the replacement of nutrients. the greatest loss of soil nutrients and erosion occurred in the areas of the burned sugar cane; the burned sugar cane (cut by hand), the average of five cuts, losses 48.82% per hectare of land, 56.45% of potassium (k) and 60.78% of phosphorus (p) than the raw sugarcane (mechanical harvesting), the replacement cost of nutrients, on average, by the burned cane (r$ 33.92 ha-1 year-1) was higher that the raw sugarcane (r$21.12 ha-1 year-1), the raw sugar cane had lower production cost (r$ 29.60 mg-1) compared to the burned sugar cane (r$32.71 mg-1) ; the raw sugar cane had a higher average return (r$ 5.70 mg-1year-1) with respect to the burned sugar cane (r\$ 2.59 mg-1).
 Revista Brasileira de Cirurgia Cardiovascular , 1989, DOI: 10.1590/S0102-76381989000300008 Abstract: the fluid dynamic performance and lifetime of a prosthetic heart valve are one of the most important characteristics to determine the choice of what prosthesis must be applied to a patient. because of this, two different biological prosthetic heart valves profiles (one high profile and other low profile) were studied, to verify possible alterations of working life, pressure gradient and reverse flux debt to this profiles difference. with a pulse duplication, ten valves sixe 29 were analysed , manufactured by institute dante pazzanese de cardiologia, being five low profile and five high profile. with a working frequency of 1000 ppm (pulses per minute) and a differential pressure of 1000 mmhg, we verified the same working life in both cases. with a cardiac simulator, the prosthesis was submitted to similar physiologic human cardiac conditions, with an equivalent 75 ppm heart pulse. the results show that the reverse flux volume necessary to close the low profile valve is lower than with the high profile valve. the loss head of these valves were compared though the maximum pressure gradient of them. it was noticed that the low profile, biological prosthetic valves are lower flux resistant than the high profile valves, being then more indicated to its implant function.
 International braz j urol , 2003, DOI: 10.1590/S1677-55382003000100006 Abstract: objectives: present and discuss the pathogenesis, diagnostic methods and treatment of the prostatic abscess. materials and methods: we have retrospectively studied the medical records of 9 patients diagnosed and treated for prostatic abscess, between march 1998 and december 2000, assessing age, context, associated diseases, and diagnostic and therapeutic methods. we have compared the data found with those described in literature, based on medline data. results: mean age was 52.6 years. three patients had previous diabetes mellitus diagnosis, and one was infected by hiv virus. transrectal ultrasound of the prostate confirmed the diagnosis of prostatic abscess in all 7 cases in which it was performed. all cases received antibiotic treatment, and 77.8% needed concomitant surgical treatment. two cases of microabscess were treated only with antibiotics. four patients were submitted to perineal catheter drainage, 2 were submitted to transurethral resection of the prostate (turp), and one patient required both procedures. mean hospitalization time was 11.2 days, and most frequent bacterial agent was s. aureus. all patients were discharged from the hospital, and there was no death in this series. conclusions: prostatic abscess should be treated with broad-spectrum antibiotics and surgical drainage (perineal puncture or turp). microabscess may heal without surgery.
 Horticultura Brasileira , 2003, DOI: 10.1590/S0102-05362003000400012 Abstract: the experiment was carried out from october to december 2000, in mossoró, brazil. the experimental design was of randomized complete blocks in a 3 x 4 + 1 factorial scheme with four replications. the treatments consisted of the combination of three cropping systems (s1= sole crop; s2 = three carrot rows alternated with three lettuce rows; and s3= four carrot rows alternated with four lettuce rows), with four looseleaf lettuce cultivars (babá de ver？o, karla, verdinha and elisabeth), plus an additional treatment (carrot, cv. brasília, in sole crop). evaluations of plant height and diameter, number of leaves per plant and leaf dry matter and yield were made for lettuce crop. plant height, shoot fresh matter, total, commercial and classification of roots were obtained for the carrot crop. agroeconomic indices were used to measure the efficiency of intercropping systems. no significant interaction between cropping systems and lettuce cultivars for any lettuce and carrot characteristic was obtained. the cropping system influenced all lettuce and carrot traits and lettuce cultivars affected only the leaf number/plant, being higher for cultivar 'karla'. the yield of lettuce in the intercropping systems, although lower than for the sole crop, represented an additional income source. the intercropping of 'brasília' carrot x lettuce cultivar 'verdinha' in the strip arrangement of four carrot rows alternated with four lettuce rows showed a greater agroeconomic efficiency, with a land equivalent ratio of 1.19 and a 3,0 as return rate.
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