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Search Results: 1 - 10 of 194793 matches for " Ant?nio de Lisboa Ribeiro Filho "
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UTILIZA O DO TESTE HIPOSMóTICO PARA AVALIAR A EFICáCIA DE DIFERENTES PROTOCOLOS DE CRIOPRESERVA O DO SêMEN CAPRINO
Rodrigo Freitas Bittencourt,Antnio de Lisboa Ribeiro Filho,Anselmo Domingos Ferreira Santos,Marcos Chalhoub
Ciência Animal Brasileira , 2006,
Abstract: Este estudo teve por objetivo comparar a eficácia de quatro protocolos de congela o do sêmen caprino (glicerol, glicerol+EDTA; etilenoglicol; etilenoglicol+EDTA), através da utiliza o do teste hiposmótico (HOST). O sêmen foi colhido de dois machos da ra a Alpina, sexualmente maduros, diluído nos diferentes meios, congelado e armazenado em nitrogênio líquido. Após a colheita, 20ìL do sêmen fresco foram incubados com 01mL de solu o hiposmótica (combina o de citrato de sódio e frutose em água destilada com osmolaridade de 125mOsmol), em banho-maria a 370C por 30 minutos. Este procedimento foi repetido após a descongela o e, em seguida, uma amostra foi colocada sobre lamina/lamínula e avaliada em contraste de fase com mil vezes de aumento. Um total de 100 células foi contado, e as médias percentuais de espermatozóides com edema ou dobramento de cauda, após o HOST, foram – para o sêmen fresco, glicerol, glicerol+EDTA; etilenoglicol; etilenoglicol+EDTA –, respectivamente, 53,89; 16,90; 10,25; 52,64 e 57,54. PALAVRAS-CHAVE: Caprinos, criopreserva o, sêmen, teste hiposmótico
AVALIA O IN VITRO DO SêMEN CAPRINO RESFRIADO, COM OU SEM CENTRIFUGA O DO PLASMA SEMINAL E DILUíDO EM LEITE DESNATADO-GLICOSE E TRIS-GEMA DE OVO
Ana Karina Saraiva Viana,Marcos Chalhoub,Antnio de Lisboa Ribeiro Filho,Ana Karine Almeida
Ciência Animal Brasileira , 2006,
Abstract: O objetivo deste trabalho foi comparar in vitro quatro tratamentos para o resfriamento de sêmen caprino, a partir de 32 ejaculados de quatro bodes, submetidos aos diluidores tris-gema de ovo e leite desnatado-glicose, e processados com ou sem centrifuga o do plasma seminal. O sêmen foi resfriado e conservado a 4o C durante 48 horas.Os resultados foram expressos em média e desvio padr o e submetidos a ANOVA (P<0,05) para a análise estatística (SPSS – vers o 11.0). Nas amostras leite desnatado-glicose sem (T1) e com (T2) centrifuga o e tris-gema de ovo sem (T3) e com (T4) centrifuga o, após 48 horas de resfriamento,obtiveram-se as médias de 33,00; 30,68; 40,62 e 46,78 para motilidade (%) e de 2,23; 2,34; 2,65 e 3,25 para vigor (0-5).Quanto às patologias de acrossoma (%) e de cauda (%),após 48 horas de conserva o a 4o C, obtiveram-se as seguintes médias: 5,16; 5,94; 3,81; 4,47 e 16,25; 12,38; 15,34;11,47, respectivamente, para as amostras T1, T2, T3 e T4. Os diferentes tratamentos n o alteraram o pH (p>0,05). Conclui-se que o diluidor tris-gema de ovo preservou melhor(p<0,05) a motilidade, o vigor e a patologia de acrossoma, do que o leite desnatado-glicose. A remo o do plasma seminal, por sua vez, n o influenciou (p>0,05) as características seminais avaliadas, exceto em rela o à patologia de cauda. PALAVRAS-CHAVE: Caprino, centrifuga o, diluidor, resfriamento, sêmen.
Aspectos Quantitativos da Inova o Tecnológica na Irriga o no Estado Do Ceará
Juliana Pinheiro Prata Lima,Antnio Lisboa Teles da Rosa,Francisco de Souza,Douglas Ribeiro Garcia
Revista Brasileira de Agricultura Irrigada , 2011, DOI: 10.7127/rbai.v5n400047
Abstract: O trabalho teve como objetivo avaliar a inova o tecnológica na irriga o no Estado do Ceará, uma atividade que pode contribuir para o crescimento sustentável da agricultura no Estado. Para isso, foram analisados artigos científicos publicados nos últimos cinco anos em periódicos nacionais classificados pelo Qualis da CAPES, assim como a gest o da inova o tecnológica na irriga o do estado do Ceará e como essa inova o poderá contribuir para o desenvolvimento sustentável da agricultura no Estado. Os resultados demonstram que as pesquisas avaliadas n o chegaram às áreas irrigadas cearenses. As OEPAs s o fundamentais para que a inova o tecnológica chegue ao campo, pois onde há OEPAs se sobressai o conhecimento e o Ceará é um dos quatro estados da federa o que n o tem uma institui o neste sentido. Algumas a es s o necessárias para realizar atividades inovadoras na irriga o. A principal, portanto, seria a cria o de uma nova OEPA e assim fortalecer as políticas de C,T&I na agricultura O fortalecimento de OSCIP′s voltadas para P,D&I em irriga o também é um fator importante a ser apoiado para que seja gerada inova o tecnológica no meio rural.
UTILIZA O DE GLICEROL E ETILENOGLICOL COMO CRIOPROTETORES NA CONGELA O DO SêMEN CAPRINO
Rodrigo Freitas Bittencourt,Antnio de Lisboa Ribeiro,Anselmo Domingos Ferreira Santos,Rogério Furst
Ciência Animal Brasileira , 2006,
Abstract: Dez amostras de sêmen de dois reprodutores caprinos, da ra a Parda-alpina, colhidas em vagina artificial, foram submetidas a quatro tratamentos para avalia o da eficiência do etilenoglicol e do glicerol, associados ou n o ao EDTA, na criopreserva o da célula espermática caprina. O diluente usado era à base de Tris-gema de ovo contendo 7% de glicerol (glicerol E glicerol+EDTA) ou 7% de etilenoglicol (etilenoglicol e etilenoglicol + EDTA), sendo que nos grupos glicerol+EDTA e etilenoglicol+EDTA foi associado ao diluente 0,1% de EDTA. As amostras foram mantidas por 60 minutos em geladeira a 40C, onde ent o era efetuada a congela o em nitrogênio (-1960C). A descongela o foi realizada em banho-maria a 370C por 30segundos. As médias obtidas para motilidade (%) a descongela o, para os grupos glicerol, glicerol+EDTA, etilenoglicol, etilenoglicol+EDTA, foram, respectivamente, 51%; 61%; 10% e 12%. Os grupos que utilizaram o glicerol como crioprotetor obtiveram melhores taxas de motilidade pós-descongela o, principalmente quando foi associado ao diluidor o EDTA (grupo glicerol+EDTA). Porém, esse resultado foi comprometido pelos maiores índices de altera es patológicas nos grupos que continham o glicerol. PALAVRAS-CHAVE: Caprinos, criopreserva o, sêmen, glicerol, etilenoglicol, EDTA
Introdu??o e sele??o de espécies arbóreas forrageiras exóticas na regi?o semi-árida do Estado de Sergipe
Drumond, Marcos Antnio;Carvalho Filho, Orlando Monteiro de;Oliveira, Visêldo Ribeiro de;
Acta Botanica Brasilica , 1999, DOI: 10.1590/S0102-33061999000300004
Abstract: the objective of this work was the selection of arboreal species for multiple use in the semi-arid area of the state of sergipe, brazil. fifteen species from the semi-arid area of central america were introduced in the region: acacia farnesiana, albizia caribaea, albizia guachepele, ateleia herbert-smithii, caesalpinia coriaria, caesalpinia eryostachys, caesalpinia velutina, enterolobium cyclocarpum, gliricidia sepium, leucaena diversifolia, leucaena leucocephala, leucaena shannoni, parkinsonia aculeata, pithecellobium dulce and senna otomaria. the species were planted in the experimental field of glória, embrapa semi-árido, in nossa senhora da glória, sergipe state, in holes of 30cmx30cm, without fertilization, 3.0mx2.0m apart in a randomized block design with three replications and 36 plants per plot. they were evaluated for survival, height, diameter at the height of 1.30m from the soil surface, 55 months after planting. g. sepium and a. guachepelle showed higher growth than the other species, with mean heights (± standard deviation), of 4.0±0.4 and 4.3±0.2m respectively, and mean diameters (± standard deviation) of 4.4±0.5 and 6.3±0.1cm, and survival rates of 100 and 98%. although l. leucocephala showed excellent growth in height (5.0±0.3m) and in diameter (6.0±1.5cm), its survival rate was 44%. l. diversifolia and a. farnesiana have shown 100% mortality in the studied plots. gliricidia sepium and albizia guachepele were outstanding, with great potentiality for the semi-arid areas in the state of sergipe. acacia farnesiana, leucaena diversifolia and senna otomaria did not show a good performance in the semi-arid conditions of the region.
Análise espacial e de vizinhan?a no melhoramento genético de plantas
Costa, Janaina Ribeiro;Bueno Filho, Júlio Sílvio de Sousa;Ramalho, Magno Antnio Patto;
Pesquisa Agropecuária Brasileira , 2005, DOI: 10.1590/S0100-204X2005001100004
Abstract: three forms of spatial analysis were compared to the analysis of the normal gauss-markov model in genetical experiments, supposing progeny effects as random: moving averages on raw data (mm), moving averages on residual data (papadakis - ppd), and spatial analysis modelling with residual covariances (ae). the local control information was initially ignored to test the effectiveness of spatial analysis. thereafter, the different forms of spatial analysis were applied to the complete model, considering the local control of lattice design. the average values of proportions between estimates of variance components and of heritability were used as a discussion guide to determine the best form of analysis. results showed that ignoring the experimental design, using spatial information was not effective, in general. in average, mm and ppd improved the original model justified by design, in contrast to ae. ae, although ineffective, did not change variance component estimates and heritability. this property guarantees that the combination of random effects for progenies and ae does not violate the assumptions (some of these justified by the design). this is specially useful in large experiments, with a huge number of progenies.
Insuflador alternativo para cirurgia videoendoscópica experimental
Sena, José Ivamberg Nobre de;Silva Filho, Antnio Ribeiro da;Penha, Gustavo Tavares Collares da;
Revista do Colégio Brasileiro de Cirurgi?es , 1999, DOI: 10.1590/S0100-69911999000300013
Abstract: during the videolaparoscopic surgery is necessary the permanent exposure of an appropriate visual field to the surgeon and his assistants work with the maximum security possible. the importance of an efficient pneumoperitoneum to a secure practice of a videolaparoscopic surgery is indisputable. the advance of modern technology provided the developmentof very efficient electronic insuflators, however too expensive. the objective of this work is to show an alternative model of insuflator much cheaper and more efficient. this model can provide a competent pneumoperitoneum with a permanent control of the ideal intracavitary pressure and an appropriate restitution in case of eventual down pressures. we have already realised about a hundred videolaparoscopics surgical procedures in human corpses (adults and fetus) and in research animais like dogs end pigs. the system is perfectly adapted to experimental videolaparoscopic surgery. its efficiency was proved. it can also be expanded to some surgical procedures in vivo and in little-sized laboratory animais like mouses and rabbits.
Colecistectomia videolaparoscópica experimental em cadáver humano: 70 casos
Sena, José Ivamberg Nobre de;Silva Filho, Antnio Ribeiro da;Pinheiro, Luiz Gonzaga Porto;
Revista do Colégio Brasileiro de Cirurgi?es , 2001, DOI: 10.1590/S0100-69912001000200005
Abstract: background: we present a model of training in laparoscopic cholecistectomy using human corpses. the objective this method is initiate, adapt, prepare and perfect the surgeons in this newer operative technique. method: seventy stillborn fresh unfreezed of both males and female were used with body heights ranging from 39 to 54 centimeters (average = 49 cm) and weights between 1,210 and 3,900 grams (average = 2,900 g). a complete set of equipment for videolaparoscopic surgery was employed. each fetus was submitted to experimental videocholecistectomy. the surgical techniques were the same than in vivo colecistectomy laparoscopic. anatomic biliary dissection and surgical ressection of the gallbladders were feasible. the relevant data for the technical and anatomical aspects of each procedure were registered. results: the use of human material for training allows similar conditions and identical anatomy as those which will be met during daily operative surgical practice. conclusions: the authors concluded that the videolaparoscopic training in stillborn human corpse can be applied in training surgeons in basic and advanced laparoscopic surgery.
Abordagem Alternativa do Crescimento Agrícola: um Modelo de Dinamica Evolucionária
José Eustáquio Ribeiro Vieira Filho,Antnio Carvalho Campos,Carlos Maurício de Carvalho Ferreira
Revista Brasileira de Inova??o , 2005,
Abstract: This paper aims at analyzing agricultural production under an evolutionaryapproach. The theoretical framework that supports the analysis is based on theassumptions of procedural and substantive uncertainties, bounded rationality,dynamic disequilibrium and structural instability. At first, specialization andlocalization indicators are determined in order to compare the Brazilian agriculturaltechnology evolution within the interregional context. Later on, an AgricultureEvolutionary Growth Model, named MECA, has been constructed tosimulate the probable behavior of agricultural grain producers and of any othercommercial agricultural activity. In this way, it was possible to identify the agroindustrialdynamic region as well as the standard behavior of technical change inagriculture. In an environment of technological competition, the model showsthat competition for productive resources in the agribusiness sector leads to apermanently search for innovations, characterizing an evolutionary dynamicsamong agricultural activities, and to a higher sectoral and regional concentrationof capital.
Efeitos potencialmente alelopáticos dos óleos essenciais de Piper hispidinervium C. DC. e Pogostemon heyneanus Benth sobre plantas daninhas
Souza Filho, Antnio Pedro da Silva;Vasconcelos, Marcus Arthur Mar?al de;Zoghbi, Maria das Gra?as Bichara;Cunha, Roberto Lisboa;
Acta Amazonica , 2009, DOI: 10.1590/S0044-59672009000200018
Abstract: this study aimed to characterize the potential allelopathic activity of essential oils of pimenta longa (piper hispidinervium c. dc.) and oriza (pogostemon heyneanus benth), and to examine, comparatively, their allelopathic effects. essential oils obtained were prepared at concentrations of 0.25%, 0.5% and 1.0%, with ether methanol as eluent, and tested upon the germination of seeds and the development of the radicle and the hypocotyl of the weeds of cultivated grassland areas, malícia (mimosa pudica) and mata-pasto (senna obtusifolia). depending on their concentrations, oils of the two species showed intensities of allelopathic activity on the donor species, on the receptor plant and on the examined plant factor. the germination of seeds was the factor most strongly inhibited by the oils. the intensities of inhibitions were positively related to the concentration, with the maximum inhibitions verified at 1%. mimosa pudica was the receptor species most sensitive to the effects of oil. in comparison, the essential oil of piper hispidinervium showed a higher potential for inhibiting the germination and development of the two receptor plants, notably in relation to the germination of seeds, when the differences were more striking. the results were attributed to the chemical composition of oils, especially in relation to the presence of monoterpenes, oxygenated monoterpenes and sesquiterpenes.
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