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Search Results: 1 - 10 of 218153 matches for " Dario Fernando de Oliveira Santos;Briglia "
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Comparative study of suture and cyanoacrylates in skin closure of rats
Souza, Sandro Cilindro de;Oliveira, Washington Luiz de;Soares, Dario Fernando de Oliveira Santos;Briglia, Carlos Henrique;Athanázio, Paulo Roberto;Cerqueira, Martins Dias de;Guimar?es, Pedro Hamilton;Carreiro, Mário Castro;
Acta Cirurgica Brasileira , 2007, DOI: 10.1590/S0102-86502007000400013
Abstract: purpose: to compare the biocompatibility of ethyl-cyanoacrylate (eca) and octylcyanoacrylate (oca) wound closures to sutures in rat skin. methods: twenty-four male wistar rats were subjected to three incisions which were closed using eca, oca or sutures . rats were divided into four groups which received biopsies on the 3rd, 7th, 14th or 21st post-operative days. necrosis, inflammation, dermatitis, infection, dehiscence, cicatricial enlargement and costs were examined; the histopathology evaluated was epithelialization, deep openings, foreign substance reaction, residues of synthesis material, fibrosis, inflammation, dehiscence and necrosis. results: the tissue adhesives presented the largest dehiscence levels, and eca the lowest cost while the other measures were similar. regarding histopathology, deep openings were more common with oca and granulomas were most frequently obtained with eca. the two tissue adhesives produces less inflammation than the inicial suture from post-operative day 7, while eca and oca cause similar inflammatory reactions. eca did not differ significantly from oca and sutures on other measures. conclusion: eca was well tolerated in this study and did not induce necrosis, allergic reactions or infections, presenting several advantages in relation to oca and sutures, including lower costs and fewer complications.
The Fukushima Nuclear Accident: Insights on the Safety Aspects  [PDF]
Zieli Dutra Thomé, Rogério dos Santos Gomes, Fernando Carvalho da Silva, Sergio de Oliveira Vellozo
World Journal of Nuclear Science and Technology (WJNST) , 2015, DOI: 10.4236/wjnst.2015.53017
Abstract: The Fukushima nuclear accident has generated doubts and questions which need to be properly understood and addressed. This scientific attitude became necessary to allow the use of the nuclear technology for electricity generation around the world. The nuclear stakeholders are working to obtain these technical answers for the Fukushima questions. We believe that, such challenges will be, certainly, implemented in the next reactor generation, following the technological evolution. The purpose of this work is to perform a critical analysis of the Fukushima nuclear accident, focusing at the common cause failures produced by tsunami, as well as an analysis of the main redundant systems. This work also assesses the mitigative procedures and the subsequent consequences of such actions, which gave results below expectations to avoid the progression of the accident, discussing the concept of sharing of structures, systems and components at multi-unit nuclear power plants, and its eventual inappropriate use in safety-related devices which can compromise the nuclear safety, as well as its consequent impact on the Fukushima accident scenario. The lessons from Fukushima must be better learned, aiming the development of new procedures and new safety systems. Thus, the nuclear technology could reach a higher evolution level in its safety requirements. This knowledge will establish a conceptual milestone in the safety system design, becoming necessary the review of the current acceptance criteria of safety-related systems.
Capital social, capital físico e a vulnerabilidade do sertanejo: o caso das comunidades de Lustal e Sítio Lagoa no município de Taua, Ceará
Mayorga, Fernando Daniel de Oliveira;Khan, Ahmad Saeed;Mayorga, Ruben Dario;Lima, Patrícia Ver?nica P. Sales;
Revista de Economia e Sociologia Rural , 2004, DOI: 10.1590/S0103-20032004000100006
Abstract: the county of tauá is located in the region of inhamuns in the state of ceará, one of the areas most affected by impacts of periodic droughts, with their adverse influence on production and consequently on the farmers' quality of life. it is observed that, during climate crises, the communities have limiting defense mechanisms. it is supposed that the social capital, as a mechanism that agglutinates and facilitates coordinated actions, strengthens the communities and reduces the vulnerability. this study intends to verify and analyze the importance of social and physical capital as a strategy of lustal and sítio lagoa communities to live with droughts. for this purpose, a questionnaire containing a list of social capital variables was submitted to specialists to rank them. out of this list the ten most frequent variables were selected. following, in the tauá county, technical specialists and rural agents experienced in these communities were asked to provide weight to social and physical capital variables. with this information, an index was developed to show the importance of social capital in the reduction of vulnerability as well as the relative importance of social and physical capital in these communities. the present work enabled the verification of the relevance of social and physical capital as decisive elements of the level of vulnerability of the communities of lustal and sítio lagoa.
Diferen?as de gênero na tendência de mortalidade por cancer de pulm?o nas macrorregi?es brasileiras
Silva, Gulnar Azevedo e;Noronha, Cláudio Pompeiano;Santos, Marceli de Oliveira;Oliveira, Julio Fernando Pinto;
Revista Brasileira de Epidemiologia , 2008, DOI: 10.1590/S1415-790X2008000300008
Abstract: lung cancer is the first most frequent cause of cancer mortality among males and the second among females in brazil. in developed countries the mortality due to this type of cancer is decreasing in men, but not in women. this study analyses mortality trends for lung cancer in brazil in the 1979-2003 period, according to gender in the whole country as well as in the five geographic macro regions. age-standardized mortality rates and mortality specific rates (40-59 and 3 60 years old) were calculated. estimated annual percentage changes (eapc) were assessed for the whole country and for each geographic macro region in three time periods: 1979-1987, 1988-1995, and 1996-2003. lung cancer mortality showed an upward trend of 29% in men and 86% in women, during the entire period (1979-2003). when data were segregated, an evident inverse trend was observed in the southeast region between 1996 and 2003 in the youngest age group, with a negative variation for men (eapc = - 2.1) and a positive one for women (eapc = 3.2). the highly positive variation in cancer mortality trends in women from the north and northeast regions in both age groups as of 1988 is noteworthy. the results point toward the need to continue tobacco control measures among males and to improve strategies aimed at women.
Contabilidade ambiental: um estudo sobre sua aplicabilidade em empresas Brasileiras
Santos, Adalto de Oliveira;Silva, Fernando Benedito da;Souza, Synval de;Sousa, Marcos Francisco Rodrigues de;
Revista Contabilidade & Finan?as , 2001, DOI: 10.1590/S1519-70772001000300007
Abstract: the globalization of the economy and the awareness of the society are forcing, currently, the companies to adopt a responsible position before the environment, that is, to produce without aggression the nature. for this they are implanting a system of environmental management in accordance with the norms of series iso 14000. to make this management demands the application of a considerable sum of financial features, having itself to have constant preoccupation in controlling them. one understands that the accounting is one of the efficient tools most for this process. it is observed, however, that few companies, in brazil, use the accounting in its environmental management. therefore, the main objective of the accomplishment of this study is to verify which the degree of development of the environmental accounting in the brazilian companies. after a bibliographical walk through on the subject, was elaborated a field research that consisted of the sending of a questionnaire to the accounts departements of potentially polluting industries. the universe understood the companies listed in the guide "500 bigger companies of brazil", edition 2000, of the exame maganize, and the sample was of 50 companies whose invoicing, in 2000, exceed us$ 50 billion.
SSR Locator: Tool for Simple Sequence Repeat Discovery Integrated with Primer Design and PCR Simulation
Luciano Carlos da Maia,Dario Abel Palmieri,Velci Queiroz de Souza,Mauricio Marini Kopp,Fernando Irajá Félix de Carvalho,Antonio Costa de Oliveira
International Journal of Plant Genomics , 2008, DOI: 10.1155/2008/412696
Abstract: Microsatellites or SSRs (simple sequence repeats) are ubiquitous short tandem duplications occurring in eukaryotic organisms. These sequences are among the best marker technologies applied in plant genetics and breeding. The abundant genomic, BAC, and EST sequences available in databases allow the survey regarding presence and location of SSR loci. Additional information concerning primer sequences is also the target of plant geneticists and breeders. In this paper, we describe a utility that integrates SSR searches, frequency of occurrence of motifs and arrangements, primer design, and PCR simulation against other databases. This simulation allows the performance of global alignments and identity and homology searches between different amplified sequences, that is, amplicons. In order to validate the tool functions, SSR discovery searches were performed in a database containing 28 469 nonredundant rice cDNA sequences.
Fósforo microbiano em solos sob pastagem natural submetida à queima e pastejo
Oliveira, Leandro Bittencourt de;Tiecher, Tales;Quadros, Fernando Luiz Ferreira de;Santos, Danilo Rheinheimer dos;
Revista Brasileira de Ciência do Solo , 2011, DOI: 10.1590/S0100-06832011000500005
Abstract: in natural grassland ecosystems deficient in available p, the temporary immobilization of p in microbial biomass and its subsequent mineralization can be considered a potential mechanism of p supply to plants. the purpose of this study was to evaluate the influence of burning and grazing of grassland vegetation on the dynamics of soil p, with emphasis on the content of p immobilized in microbial biomass. the treatments consisted of the combination of grazing (presence or absence) and burning (presence or absence) in a natural grassland on slope and lowlands after 13 years under a management involving burning and grazing. burning and grazing were arranged in a completely randomized design with four replications. soil samples were collected from the 0-10 cm layer twice during the growing period of native pasture, always immediately after grazing. the stocking rate was calculated based on a utilization rate of 20-35 % of existing forage mass. the p content stored in the soil microbial biomass, the total p content and total organic p in soil were determined. the statistical analysis was based on analysis of variance by randomization tests. the microbial p content of natural pasture ranged from 11.4 to 57.3 mg kg-1, representing on average 38 and 32 % of total organic p in soil in the first and second evaluation, respectively. the p immobilized in microbial biomass is a potential reserve of p that can meet the demand for native species in natural pastures, and is a more sensitive indicator than the total organic p content of the soil to detect changes induced by grazing. management of natural pastures with fire decreases the amplitude of the increase in microbial p due to grazing.
Níveis de mercúrio em peixes consumidos pela comunidade indígena de Sai Cinza na Reserva Munduruku, Município de Jacareacanga, Estado do Pará, Brasil
Brabo Edilson da Silva,Santos Elisabeth de Oliveira,Jesus Iracina Maura de,Mascarenhas Artur Fernando
Cadernos de Saúde Pública , 1999,
Abstract: O estudo consiste em avaliar os níveis de mercúrio no pescado consumido pela comunidade indígena de Sai Cinza (Reserva Munduruku) no Estado do Pará, e associá-los com os hábitos de consumo da popula o. Um total de oitenta espécimes de peixes foram capturados. As determina es de Hg foram realizadas por absor o at mica. A concentra o média de Hg nas espécies carnívoras foi de 0,293 μg/g (DP = 0,104) enquanto nas n o carnívoras foi de 0,112 μg/g (DP = 0,036). As espécies referidas como de maior consumo ente os 330 indivíduos entrevistados foram: tucunaré, pacu, jaraqui, traíra, aracu, matrinch e caratinga. As espécies com concentra es mais elevadas de Hg foram tucunaré e traíra, que est o entre os peixes mais consumidos. A freqüência de consumo constitui-se num fator importante na avalia o de risco de contamina o por mercúrio em comunidades que n o têm outras alternativas de alimenta o.
Efeito da acetila??o das partículas de madeira de Eucalyptus grandis e da inclus?o de partículas de polietileno e de embalagens cartonadas nas propriedades de chapas de aglomerado
Oliveira, Fernando Vitor;Vital, Benedito Rocha;Silva, José de Castro;Carneiro, Angelica de Cassia Oliveira;Pimenta, Alexandre Santos;
Revista árvore , 2010, DOI: 10.1590/S0100-67622010000500019
Abstract: the objective of this study was to evaluate the effect of eucalyptus grandis particles acetylation and the addition of polyethylene of low (pebd) and high density (pead) and paperboard particles in the properties particleboard. wood particles were produced in laboratory from logs that were split into plaks, baguettes and then converted into flakes and finally transformed into particles. paperboard and polyethylene collected in recyclable material stores and processed in a hammer mil. acetylation was performed in autoclave with pressure and temperature control. wood particles acetylation promoted a significant stabilization of the particleboards but decrease some mechanical properties. the addition of paperboard reduced all the mechanical properties and promoted a greater adsorption of water vapor, thickness swelling and linear expansion, for boards containing acetylated or non acetylated wood particles. the addition of polyethylene reduced the mechanical properties, specially the static bending (mor and moe), however resulted in more stable boards.
Lipoxigenases e teor de ácido linolênico relacionados à qualidade de sementes de soja
Oliveira, Dario Alves de;Piovesan, Newton Deniz;José, Inês Chamel;Barros, Everaldo Gon?alves de;Dias, Denise Cunha Fernandes dos Santos;Moreira, Maurílio Alves;
Revista Brasileira de Sementes , 2006, DOI: 10.1590/S0101-31222006000100005
Abstract: the fatty acid content of soybean seeds has not been considered when evaluating the quality of seeds in research work carried out so far. the objective was to determine the effects of absence of lipoxygenases and low linolenic acid content on seed quality after delayed harvest. four different bulks were constructed: (a) seeds with lipoxygenase and normal linolenic acid content; (b) seeds with lipoxygenase and low linolenic acid content; (c) seeds without lipoxygenase and normal linolenic acid content and (d) seeds without lipoxygenase and low linolenic acid content. f5 seeds were harvested at the r8 stage and 10, 20 and 30 days after r8 stage. seed physiological quality was evaluated by the standard germination test, accelerated aging test and emergence speed index. seeds with low linolenic acid content presented higher seed quality as measured by the accelerated aging test. seeds with lipoxygenase showed higher vigor as compared to those lacking these isozymes as determined by the emergence speed index.
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