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Search Results: 1 - 10 of 51996 matches for " Fabrício Rodrigues dos Santos "
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An Online mtDNA Tool for Identification of Neotropical Psittacid Species and Taxonomic Issues: A Study Case of the Amazona ochrocephala Complex  [PDF]
Anderson Vieira Chaves, R.O.P. Queiroz-Filho, Fabiano Augusto Assun??o Silva, Cristina Yumi Miyaki, Fabrício Rodrigues dos Santos
Natural Resources (NR) , 2014, DOI: 10.4236/nr.2014.511056
Parrots are among the most popular pets in the world and they are also some of the most illegally traded, particularly in Brazil. Some computational tools were recently developed by researchers based on molecular databases for taxonomy support, forensic identification and conservation purposes. In this study, the DNA Surveillance platform was used to build an online database tool for molecular identification of Brazilian Psittacids using DNA sequences of six mitochondrial genes. To illustrate possible taxonomic issues of the online tool due to interspecific hybridization or unresolved taxonomy, we focused on Amazona aestiva that is considered as one of the most common parrots in Brazil, commonly bred as pets, and considered to be part of a species complex with Amazona ochrocephala from South America. We provide three curated sequence databases, which allow the species identification of individuals or tissue samples of birds of the Psittacidae family using mitochondrial DNA markers, and a comprehensive description of a taxonomic issue involving the A. ochrocephala complex. The results obtained corroborate previous studies suggesting that these species are not reciprocally monophyletic, due to either an ancient hybridization in central Brazil, or, they maybe just are morpho-varieties of the same species. Alternatively, if A. aestiva and A. ochrocephala were considered as sister species, the data could be interpreted either as a result of secondary contact or incipient speciation. Beyond the use of mtDNA for species identification, the high mtDNA haplotype diversity observed in A. aestiva indicates its potential use in discrimination of lineages that could be an important auxiliary tool to certify the captive origin of legally commercialized parrots.
Risk factors for maxillofacial injuries in a Brazilian emergency hospital sample
Leles, José Luiz Rodrigues;Santos, ênio José dos;Jorge, Fabrício David;Silva, Erica Tatiane da;Leles, Cláudio Rodrigues;
Journal of Applied Oral Science , 2010, DOI: 10.1590/S1678-77572010000100006
Abstract: background: maxillofacial injuries occur in a significant number of trauma patients. epidemiological assessments are essential to reaffirm patterns, identify new trends and develop clinical and research priorities for effective treatment and prevention of these injuries. objective: the aim of this study was to identify the epidemiological profile and risk factors associated with maxillofacial trauma treated at a referral emergency hospital for the public health system in the state capital of goiás, brazil. material and methods: a cross-sectional study was designed including 530 patients with maxillofacial trauma, 76% male, with a mean age of 25.5±15.0 years. data were collected between may 2003 and august 2004 over weekly shift-working periods. results: the main causes of trauma were traffic accidents (45.7%) and physical assaults (24.3%), and differences in etiological factors were identified according to gender (p<0.001). the distribution of patients according to age and etiology showed significant differences for traffic accidents (p<0.01), physical assaults (p<0.001), falls (p<0.001) and sport injuries (p<0.01). in the multinomial logistic regression analysis (r2 = 0.233; p<0.05), age was associated with injury in traffic accidents and falls (p<0.01), sports-related accidents were associated with males (p<0.05), and alcohol consumption with assaults and traffic accidents (p<0.001). facial soft tissue lesions were found in 98% of patients and facial fractures in 51%. conclusions: the significant association of maxillofacial trauma with young males and alcohol consumption reinforces the need for educational strategies and the development of policies for the prevention and reduction of associated damage in this specific risk group.
Efeito do silicato de cálcio e da autoclavagem na supressividade e na conducividade de dois solos à Rhizoctonia solani
Rodrigues, Fabrício de ávila;Corrêa, Gilberto Fernandes;Kornd?rfer, Gaspar Henrique;Santos, Maria Amelia dos;Datnoff, Lawrence Elliot;
Pesquisa Agropecuária Brasileira , 1999, DOI: 10.1590/S0100-204X1999000800007
Abstract: the effect of calcium silicate slag and soil sterilization on the natural suppressiveness of a typic acrustox (clay dark red latosol ? lea) and the natural conduciveness of an oxic haplustoll (tre) to rhizoctonia solani were studied under greenhouse conditions. the experimental design was a three-replicate completely randomized one, with 2 x 3 x 2 factorial combination of the following treatments: two soil kinds (lea and tre, collected at 0-20 cm layer); three treatments with and without soil sterilization, calcium silicate slag and nontreated control; and uninfested and infested with r. solani. each soil material was infested previously with 800 mg of the inoculum per kg soil. application of silicate was done mixing 0,63 g of this product with 1 kg each soil material and incubated for 30 days. the application ofsilicate increased the exchangeable ca2+ and bases amount in both soils. the decrease in the aluminum saturation level from 70 to 19% and the increase in base saturation from 9 to 21% altered significantly the natural suppressiveness of lea to r. solani. application of silicate to the tre had no effect on its conduciveness, for its natural eutrophic character, which is benefic to r. solani development. sterilization by autoclavation did not influence disease development on bean by r. solani. this suggests that possibly other abiotic factors were responsible for either suppressiveness or conduciveness of these soils.
Estudo da articula o patelofemoral por ressonancia magnética: a varia o da morfologia do ligamento patelofemoral medial Study on the patellofemoral joint using magnetic resonance imaging: morphological variation of the medial patellofemoral ligament
Alfredo dos Santos Netto,Marcelo Botelho Soares de Brito,Fabrício Roberto Severino,Leila Rodrigues Andrade Campos
Revista Brasileira de Ortopedia , 2012, DOI: 10.1590/s0102-36162012000200010
Abstract: OBJETIVO: Estudar as medidas e rela es anat micas da articula o patelofemoral por ressonancia magnética, avaliando a varia o da morfologia do ligamento patelofemoral medial (LPFM) de acordo com a altura e a idade do paciente, bem como com as varia es das medidas das outras estruturas reconhecidamente envolvidas na predisposi o à instabilidade patelar. MéTODO: Foram submetidos ao exame de ressonancia magnética 23 joelhos (18 pacientes), sendo aferidas as medidas da distancia interepicondilar, altura da patela, profundidade da tróclea, proeminência troclear ventral, angulo do sulco da tróclea, inclina o da faceta lateral, inclina o lateral da patela, tamanho da faceta lateral e medial e sua raz o, e as medidas de comprimento e espessura do LPFM, sendo essas comparadas com as demais medidas. RESULTADOS: O comprimento do LPFM foi de, em média, 46,4mm, enquanto as espessuras medidas na inser o patelar, ter o médio e inser o femoral foram de, respectivamente, 1,7mm, 1,4mm e 1,2mm. A espessura do LPFM correlacionou-se positivamente com a medida do c ndilo lateral e a distancia interepicondilar, e negativamente com a idade do paciente. CONCLUS O: A morfologia do LPFM varia em fun o da distancia interepicondilar e do c ndilo lateral e da idade do paciente. OBJECTIVES: To study the measurements and anatomical relationships of the patellofemoral joint using magnetic resonance imaging, and to evaluate the variation in the morphology of the medial patellofemoral ligament (MPFL) according to patients' heights and ages and the variation in measurements on other structures that are known to be involved in predisposition to patellar instability. METHOD: Twenty-three knees (18 patients) underwent magnetic resonance imaging and their interepicondylar distance, patellar height, trochlear depth, ventral trochlear prominence, trochlear groove angle, lateral facet tilt, lateral patellar tilt and size of the lateral and medial facets and their ratio were measured. These measurements were compared with the length and thickness of the MPFL. RESULTS: The average length of the MPFL was 46.4 mm, while the average thicknesses of its patellar insertion, middle third and femoral insertion were, respectively, 1.7 mm, 1.4 mm and 1.2 mm. The thickness of the MPFL correlated positively with the lateral condyle and interepicondylar distance measurements, and negatively with the patients' ages. Conclusion: The morphology of the MPFL varies with the interepicondylar distance and the lateral condyle distance, and with patients' ages.
Aspectos de contamina??o biológica em filtros de condicionadores de ar instalados em domicílios da cidade de Manaus - AM
Cartaxo, Elizabeth Ferreira;Gon?alves, Ana Catarina Lima Chaves;Costa, Fabrício Rodrigues;Coelho, Ilsa Maria Valois;Santos, Januário Gama dos;
Engenharia Sanitaria e Ambiental , 2007, DOI: 10.1590/S1413-41522007000200011
Abstract: this work presents the results of a research about the contamination caused by air conditioners filters that are installed in the residential area in manaus. the research took place in the scope of caema?s project (conditioning of air, energy and environment), which one consisted in changing inefficient conditional air devices for efficient ones in the urban zone of the city. amongst 500 air conditioners removed of the system by the project, 50 filters (10%) were selected for biological contamination analysis, having been identified an enormous variety of agents, like bacteria and fungus, that are harmful for human health. the most identified bacterium was the staphylococcus sp and the fungus more frequent was the penicillium sp. also it was possible to verify, by telephonic interviews with 37 users of these equipments, the great incidence of symptoms associates to the insufficient air quality in residential environments. the circumstances that had motivated the chance of this research, had also disabled that the assemble could be made per volume unit, with the conditioners still working. this fact did not compromise the quality of the work, neither the objectives to promote one reflection about the cares with the correct cleanness of the residential air conditioners.
Um modelo estocástico combinado de previs?o sazonal para a precipita??o no Brasil
cio, Paulo Sérgio;Silva, Fabrício Daniel dos Santos;Fortes, Lauro Tadeu Guimar?es;Santos, Luiz André Rodrigues dos;Ferreira, Danielle Barros;Salvador, Mozar de Araújo;Balbino, Helena Turon;Sarmanho, Gabriel Fonseca;Santos, Larissa Sayuri Futino Castro dos;Lucas, Edmundo Wallace Monteiro;Barbosa, Tatiane Felinto;Dias, Pedro Leite da Silva;
Revista Brasileira de Meteorologia , 2010, DOI: 10.1590/S0102-77862010000100007
Abstract: this article discusses a combined model to perform climate forecast in a seasonal scale. in it, forecasts of specific stochastic models are aggregated to obtain the best forecasts in time. stochastic models are used in the auto regressive integrated moving average, exponential smoothing and the analysis of forecasts by canonical correlation. the quality control of the forecast is based on the residual analysis and the evaluation of the percentage of reduction of the unexplained variance of the combined model with respect to the individual ones. examples of application of those concepts to models developed at the brazilian national institute of meteorology (inmet) show good results and illustrate that the forecast of the combined model exceeds in most cases each component model, when compared to observed data.
Análise dos custos hospitalares em um servi?o de emergência
Mesquita, Gerardo Vasconcelos;Oliveira, Fernando Amaro Farias Veloso de;Santos, Ana Maria Ribeiro dos;Tapety, Fabrício Ibiapina;Martins, Maria do Carmo de Carvalho e;Carvalho, Carmem Milena Rodrigues Siqueira;
Texto & Contexto - Enfermagem , 2009, DOI: 10.1590/S0104-07072009000200010
Abstract: currently, accidents and violence are classified in brazil by the ministry of health, according to the international classification of diseases as external causes. the objective of this study is to analyze hospital costs resulting from external causes at the emergency ward in teresina-pi, brazil. the data was collected through the hospital information system at getúlio vargas hospital from 2005 to 2007. the results presented in show that the situation in teresina, piauí has been similar to the rest of the brazil, given that in teresina, external causes have been increasing in number of occurrences and has elevated the cost of hospital admissions. an increase in admissions (19.5%) and hospital costs (114.9%) because of these causes was observed. one concludes that this data may aid in the implementation of public policies which prevent and combat this problem, as well as sensitize health care professionals, since a great number of the external cause victims require qualified professional assistance.
Recent Demographic History and Present Fine-Scale Structure in the Northwest Atlantic Leatherback (Dermochelys coriacea) Turtle Population
érica Molfetti, Sibelle Torres Vila?a, Jean-Yves Georges, Virginie Plot, Eric Delcroix, Rozen Le Scao, Anne Lavergne, Sébastien Barrioz, Fabrício Rodrigues dos Santos, Beno?t de Thoisy
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0058061
Abstract: The leatherback turtle Dermochelys coriacea is the most widely distributed sea turtle species in the world. It exhibits complex life traits: female homing and migration, migrations of juveniles and males that remain poorly known, and a strong climatic influence on resources, breeding success and sex-ratio. It is consequently challenging to understand population dynamics. Leatherbacks are critically endangered, yet the group from the Northwest Atlantic is currently considered to be under lower risk than other populations while hosting some of the largest rookeries. Here, we investigated the genetic diversity and the demographic history of contrasted rookeries from this group, namely two large nesting populations in French Guiana, and a smaller one in the French West Indies. We used 10 microsatellite loci, of which four are newly isolated, and mitochondrial DNA sequences of the control region and cytochrome b. Both mitochondrial and nuclear markers revealed that the Northwest Atlantic stock of leatherbacks derives from a single ancestral origin, but show current genetic structuration at the scale of nesting sites, with the maintenance of migrants amongst rookeries. Low nuclear genetic diversities are related to founder effects that followed consequent bottlenecks during the late Pleistocene/Holocene. Most probably in response to climatic oscillations, with a possible influence of early human hunting, female effective population sizes collapsed from 2 million to 200. Evidence of founder effects and high numbers of migrants make it possible to reconsider the population dynamics of the species, formerly considered as a metapopulation model: we propose a more relaxed island model, which we expect to be a key element in the currently observed recovering of populations. Although these Northwest Atlantic rookeries should be considered as a single evolutionary unit, we stress that local conservation efforts remain necessary since each nesting site hosts part of the genetic diversity and species history.
A Recombinant Protein Based on Trypanosoma cruzi P21 Enhances Phagocytosis
Adele A. Rodrigues, Tatiana M. Clemente, Marlus A. dos Santos, Fabrício C. Machado, Rafael G. B. Gomes, Heline Hellen T. Moreira, Mário C. Cruz, Paula C. Brígido, Paulo C. F. dos Santos, Flávia A. Martins, Diana Bahia, Juliana T. Maricato, Luiz M. R. Janini, Eduardo H. Reboredo, Renato A. Mortara, Claudio V. da Silva
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0051384
Abstract: Background P21 is a secreted protein expressed in all developmental stages of Trypanosoma cruzi. The aim of this study was to determine the effect of the recombinant protein based on P21 (P21-His6) on inflammatory macrophages during phagocytosis. Findings Our results showed that P21-His6 acts as a phagocytosis inducer by binding to CXCR4 chemokine receptor and activating actin polymerization in a way dependent onthe PI3-kinase signaling pathway. Conclusions Thus, our results shed light on the notion that native P21 is a component related to T. cruzi evasion from the immune response and that CXCR4 may be involved in phagocytosis. P21-His6 represents an important experimental control tool to study phagocytosis signaling pathways of different intracellular parasites and particles.
Risco climático para o cultivo do algodoeiro na regi?o nordeste do Brasil
Azevedo, Pedro Vieira de;Silva, Fabrício Daniel dos Santos;
Revista Brasileira de Meteorologia , 2007, DOI: 10.1590/S0102-77862007000300012
Abstract: weekly mean values of solar radiation, rainfall, evapotranspiration and air temperature were used for establishing the lower climatic risk to the cotton crop. for irrigated fields, the potential crop yield was evaluated by the cumulative growth index (cgi), while for rain-fed conditions the climatic risk was determined by the water potential deficit (wpd). under irrigated and rain-fed conditions, the lower climatic risk occurs when cotton crop is sowing from 6 to 19 august and from the 44th (west region of bahia state) to the 19th week of the year. from the 1st week of the year, the most suitable date for cotton sowing start in the central region of piauí state, reaching maximum covering area of piauí, rio grande do norte, paraíba, pernambuco states and north of bahia state in the period between the 4th and the 8th week. in the south and west regions of bahia state, the lower climatic risk is reached by cotton crop when sowing in the 10th and 46th weeks. in the northeast coast, otherwise the cotton crop sowing is more suitable in the period from the 14th to 17th week, covering most of the coastal shore table lands from rio grande do norte to bahia states and almost the total areas of the alagoas and sergipe states.
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