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Search Results: 1 - 10 of 417817 matches for " Márcio Vieira;Lopes "
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Vacina inativada contra a hepatite A: revis?o da literatura e considera??es sobre seu uso
Santos, Márcio Vieira;Lopes, Marta Heloísa;
Revista da Sociedade Brasileira de Medicina Tropical , 1997, DOI: 10.1590/S0037-86821997000200010
Abstract: a new, safe, highly immunogenic and probably long term effective inactivated hepatitis a virus vaccine has been licensed for clinical use. clinical trials in developed countries have demonstrated its efficacy in preventing hepatitis a in high risk groups, such as travelers to regions where hav infection is endemic and day care children and staff, its efficacy in postexposure conditions and in community outbreaks. the authors review the basic and changing features of the disease and its epidemiology in especific geographical regions trying to elucidate its use in the control of the disease in developing countries, especially in brazil. taking in consideration its efficacy, safety and immunogenicity, the inactivated hepatitis a vaccine may be of extreme value in terms of individual protection. because this vaccine is so new, there are no formal recomendations for its use in developing countries, and appropriate public health use of hepatitis a vaccine requires up-to-date epidemiological information.
Vacina inativada contra a hepatite A: revis o da literatura e considera es sobre seu uso
Santos Márcio Vieira,Lopes Marta Heloísa
Revista da Sociedade Brasileira de Medicina Tropical , 1997,
Abstract: O desenvolvimento, licenciamento e comercializa o recentes de uma vacina inativada contra a hepatite A (VIHA) têm possibilitado a obten o de imuniza o ativa, segura e provavelmente duradoura contra essa doen a. Estudos conduzidos em países desenvolvidos demonstram sua utilidade clínica na preven o da hepatite A (HA) em viajantes susceptíveis que se dirigem a áreas de alta endemicidade, em crian as pré-escolares e trabalhadores de creches, além de avaliar o uso pós-exposi o e em em surtos epidêmicos. Os autores enfocam aspectos epidemiológicos atuais da hepatite A em diferentes regi es visando, através do conhecimento da epidemiologia da doen a, esclarecer a utilidade que a VIHA teria no controle dessa doen a nos países em desenvolvimento, especialmente no Brasil. Com base na sua eficácia, seguran a e imunogenicidade, a VIHA se mostra de extremo valor a nível de prote o individual. Porém, devido ao pouco tempo de uso clínico desta vacina, n o encontramos disponíveis recomenda es formais para o seu uso nos países em desenvolvimento, especialmente a nível de Saúde Pública. Dados epidemiológicos atualizados sobre a HA nas diversas regi es brasileiras s o essenciais para o desenvolvimento de uma estratégia racional de imuniza o.
Seasonal response of edaphic bioindicators using green manure in Brazilian semi-arid conditions
Pimentel, Márcio Sampaio;Carvalho, Rubens Silva;Martins, Lindete Míria Vieira;Silva, Adriano Victor Lopes da;
Revista Ciência Agron?mica , 2011, DOI: 10.1590/S1806-66902011000400002
Abstract: the goal of this work was to evaluate the response of edaphic macrofauna, soil microbial biomass carbon, soil basal respiration, metabolic quotient and labile carbon of fumigated soil in a fluvic neosol. the experimental design was in randomized blocks, with five treatments (four green manure mix and one control) and four replications, and subsequent planting of melon (cucumis melo l.) under semi-arid conditions in juazeiro, bahia state, brazil, from august 2006 to august 2007. soil samples were collected at a depth of 0-10 cm at 6 days before, and 117; 215 and 354 days after green manure mix planting. the results indicate that none of the attributes presented a significant difference for the treatments, but changed significantly in relation to the time of sample collection. the higher levels of soil microbial biomass carbon and labile carbon of fumigated soil were measured 117 days after planting. soil microbial biomass carbon was inversely correlated with soil basal respiration and metabolic quotient, which increased as of 215 days after planting. at 354 days after planting, the edaphic macrofauna presented the highest density, richness, diversity and uniformity. ants and beetles were most abundant in the areas studied.
Análise do custo e do raio econ?mico de transporte de madeira de reflorestamentos para diferentes tipos de veículos
Silva, Márcio Lopes da;Oliveira, Robson José de;Valverde, Sebasti?o Renato;Machado, Carlos Cardoso;Pires, Vanessa Aparecida Vieira;
Revista árvore , 2007, DOI: 10.1590/S0100-67622007000600012
Abstract: the objective of this study was to establish the viable transport maximum distance for each type of wood transportation vehicle from the harvest areas to the consumption centers. thus, reforestation cost and revenue data were used, as well as the load capacity of different types of vehicles used for wood transport. the application of economic criteria (vpl, tir, cmp and bcpe) showed that the distances varied between 155 and 226 km, for the small truck and rodotrem (truck with two large trailers), respectively. it was concluded that rodotrem could reach a greater distance, with wood price being the factor most influencing maximum transport distance.
A percep??o sobre o uso da madeira de eucalipto pelos fabricantes do polo moveleiro de Ubá-MG
Teixeira, Tatiana de Oliveira Borges;Silva, Márcio Lopes da;Jacovine, Laércio Ant?nio Gon?alves;Valverde, Sebasti?o Renato;Silva, José de Castro;Pires, Vanessa Aparecida Vieira;
Revista árvore , 2009, DOI: 10.1590/S0100-67622009000500019
Abstract: the main objective of this work was to analyze the perception of the manufacturers of the furniture center of ubá-mg, brazil on the use of eucalyptus wood for furniture production. the increasing environmental restraint on the use of wood from native forests has stimulated the use of reforestation plantings specially of eucalyptus. a questionnaire was made and applied to the undertakers of the furniture center of ubá, who use solid wood for furniture production, including seventeen of the dining-room section, twenty-one of the bedroom section and six of the made-to-order furniture section. the experience of using eucalyptus wood was observed in 43.2% of the enterprises. the main factors that influenced its use were: the fact that the lumber comes from planted forest and have uniform characteristics, and the scarcity of wood from native forest. 88% of the enterprises that have never used eucalyptus wood have already learned about its potentialities but do not use it because of their little knowledge about it, the lack of suppliers, lack of consumer demand and high price. it was concluded that most enterprises have interest in the use of eucalyptus wood in the future, once they obtain more information and reasonable price.
Logistic Architecture Based on Models  [PDF]
Tania Regina Brasileiro A. Teixeira, Márcio Lopes Pimenta
iBusiness (IB) , 2014, DOI: 10.4236/ib.2014.64020
Abstract: The article identifies the essential dimensions in relation to outsourced logistic management, through a study of the outsourcing process of a large Brazilian wholesaler distributor’s logistic activities. The author has developed a management tool able to guide and direct the outsourcing operators of integrated logistic services so as to allow them to organize their management system. The author proposes a logistic architecture based on models which will facilitate the managerial work and transform the logistic system into a strategic skill, thus leveraging its ability to compete in the market. This idea is focused on the client, and is capable of integrating and managing all the interface elements of the logistic system, connecting and joining all of them in order to perform more organized and structured logistic activities. Therefore, the logistic architecture based on models represents the nature and structure of a logistic system as well as determines the way for it to operate.
Technology roadmapping, uma alternativa no delineamento da pesquisa agropecuária e sua aplica??o na cadeia de cenoura
Onoyama, Silvia S;Silva, Giovani Olegário da;Cota Júnior, Márcio BG;Cheng, Lin C;Lopes, Carlos Alberto;Vieira, Jairo V;Onoyama, Marcia M;Vilela, Nirlene J;
Horticultura Brasileira , 2012, DOI: 10.1590/S0102-05362012000400002
Abstract: this study aimed to present the application of technology roadmapping (trm) method for the definition of the carrot research program at embrapa hortali?as in the next 15 years. the carrot production chain was chosen because this vegetable crop is one of the most important in brazil. moreover, the related projects from embrapa hortali?as have had significant impacts on the vegetable sector and the team was motivated to conduct prospective studies for identifying real and potential demands to support the projects planning related to this species. the steps of the trm application were as follow: (1) to define the scope of the prospective study; (2) to understand the context of the carrot value chain in order to facilitate the process of trm adaptation; (3) to establish the conceptual model of the roadmapping based on the basic graphic representation, with four layers: market, business, research areas and resources (physical, financial, human and expertise); (4) to collect data from primary and secondary sources, such as growers, wholesalers, seed companies, supermarkets, processors, consumers, and researchers, in order to support market and business layers; and (5) to carry out a workshop with external partners and collaborators, and subsequent workshops with the thematic groups to elaborate the roadmapping. the application of trm from the managerial perspective allowed a robust data collection plan of the current status of the carrot production chain in brazil and a clear action-plan of research activities aiming to reach the prioritized demands in this chain. furthermore, it allowed the identification of the human and material resources needed to fulfill the research actions in a time perspective. in the scientific dimensions, the method showed significant degree of flexibility, therefore being recommended to be extended to other vegetable chains and to other agribusiness sectors.
Propriedades físico-hídricas de um Latossolo Vermelho submetido a diferentes sistemas de manejo
Vieira, Márcio Luis;Klein, Vilson Antonio;
Revista Brasileira de Ciência do Solo , 2007, DOI: 10.1590/S0100-06832007000600006
Abstract: chiseling is one of the mechanical practices that can be used in no-tillage (nt) soils in order to reduce soil bulk density, resistance to root penetration, and to increase water permeability. the effect of these changes on plant growth and consequently on grain yield depends on climatic conditions. in soils with ideal moisture conditions, the physical limitations tend to be less noticeable. this study aimed to analyze the changes in the physical and hydric properties of a chiseled oxisol under nt system. the following soil parameters were assessed: bulk density, maximum dry density and optimum moisture content, relative density, water infiltration, and hydraulic conductivity of saturated (k0) and unsaturated soils (kè) through field tensiometry. the water infiltration and ko in the chiseled soils were higher than in those of nt soils. the chiseling effects lasted for over one year, and this practice may be recommended for soil and water conservation. bulk density did not differ significantly between the management systems. it was concluded that the effects of chiseling on nt soils can last for two years and can improve conditions for soil and water conservation.
Foreign liquidity, economic openning and growth in Latin American economies
Holland, Márcio;Vieira, Flávio Vilela;
Revista Brasileira de Economia , 2005, DOI: 10.1590/S0034-71402005000200006
Abstract: the main concern of our empirical study is to shed light on the question of whether or not and in which direction long-term growth has been associated with financial (liquidity) and trade opening since early the 1970s using a panel data approach for 11 latin american countries. previous empirical studies reported mixed results in terms of finding a stable association between capital account liberalization and growth or even for trade opening and growth. our empirical results suggest an important link between international liquidity and growth, but the same does not apply for trade opening and growth.
Germination and development of jatropha seedlings under water stress conditions Germina o e desenvolvimento de plantulas de pinh o manso sob condi es de estresse hídrico simulado
Márcio Dias Pereira,José Carlos Lopes
Semina : Ciências Agrárias , 2011,
Abstract: The first step sequence that involves the germination process is imbibition. The limitation of water to the seed at planting time can reduce germination and velocty as well as the development of the seedling. Hence, the objective of this study was to evaluate the germination and seedling development of jatropha under conditions of water stress by polyethylene glycol (PEG6000). The study was conducted at the Research Laboratory of the Department of Crop Seeds, Federal University of Vi osa. We used seeds of jatropha in temperature de 30 °C under osmotic potential levels of 0.0, -0.2, -0.4, -0.6, -0.8, -1.0 and -1.2. The performance of seed germination and seedling development were evaluated by germination (first and second count), index of germination velocity, time of germination, length and primary root and hypocotyl length. The experimental design was completely randomized design with six levels of osmotic potential to more witnesses and four replications. We conducted the analysis of variance and regression of the data and curves fitted by quadratic polynomial model for all variables. The reduction in osmotic potential of the substrate caused a significant reduction in germination of seeds of jatropha, as well as the speed of germination and seedling performance of this species. The fall of germination and seedling performance is enhanced and levels considered critical to -0.2 MPa and inhibits germination from -1.2 MPa. A primeira etapa da seqüência que envolve o processo germinativo é a embebi o. A limita o de água para a semente no momento da semeadura pode diminuir a germina o e sua velocidade, bem como o desenvolvimento da plantula. Diante disto, o objetivo deste trabalho foi avaliar o desempenho germinativo e o desenvolvimento de plantulas de pinh o manso sob condi es de estresse hídrico simulado por polietilenoglicol (PEG6000). O trabalho foi desenvolvido no Laboratório de Pesquisa em Sementes do Departamento de Fitotecnia da Universidade Federal de Vi osa. Utilizaram-se sementes de pinh o manso em temperatura de 30oC sob os níveis de potencial osmótico de 0,0; -0,2; -0,4; -0,6; -0,8; -1,0 e -1,2. O desempenho germinativo das sementes e o desenvolvimento das plantulas foram avaliados pelos testes de germina o (primeira e segunda contagem), índice de velocidade de germina o, tempo médio de germina o, comprimento de raiz primária e comprimento do hipocótilo. O delineamento estatístico utilizado foi o inteiramente casualizado com seis níveis de potencial osmótico mais a testemunha com quatro repeti es. A redu o do potencial osmótico do sub
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