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Eficácia antitussígena de duas formula??es fitoterápicas
Mello, F.B.;Mello, J.R.B.;
Arquivo Brasileiro de Medicina Veterinária e Zootecnia , 2007, DOI: 10.1590/S0102-09352007000300024
Abstract: the antitussive-expectorant effects of two phytotherapic formulations available in the brazilian market were evaluated using three different biological models. each phytotherapic formulation, with different composition, had the same batch number and fabrication date. the trade names of the phytotherapics were: gripalplus solu??oò and melagri?oò. wistar rats were used in the airway secretion model, guinea pigs in the citric acid-induced cough model and japanese quails in the mucociliary transport rate determination. the animals (one group/formulation) were divided in the two phytotherapic groups and orally treated with the equivalent to ten told the therapeutic recommended dose, which was 9ml.kg-1. animals of negative control group of each specie were orally treated with 10ml.kg-1 of saline. positive guinea-pigs citric acid-induced cough model was subcutaneously treated with 1mg.kg-1 of morphine. in the rats airway secretion model and japanese quails mucociliary transport rate, a positive control orally received 600mg.kg-1 of erdosteine. the results showed that both phytotherapic formulations were able to inhibit the guinea pig cough reflex induced by citric acid, being 36.4% of reduction in the gripalplus solu??oò group and 27.3% in the melagri?oò group. the rats airway secretion and the mucociliary transport rate were not significantly affected by the two phytotherapic formulations.
Exploring the potential of the S o Paulo Potential
Oliveira J.R.B.,Zagatto V.,Pereira D.,Lubian J.
EPJ Web of Conferences , 2010, DOI: 10.1051/epjconf/20100202002
Abstract: Recent development of an imaginary potential based on the S o Paulo potential is briefly presented. Further developments of the model in order to describe weakly bound systems (e.g. 7Li +120Sn) are discussed and compared to experimental data. New preliminary data on the 18O+110Pd transitional system are also presented and apparent similarities to the weakly bound case are commented.
Avalia??o da corros?o sob tens?o em a?o inoxidável AISI 321 em ambiente de reator nuclear
Schvartzman, M.M.A.M.;Matias, Adalberto;Cruz, J.R.B.;
Matéria (Rio de Janeiro) , 2010, DOI: 10.1590/S1517-70762010000100006
Abstract: the aim of this work is to evaluate the stress corrosion cracking (scc) susceptibility of aisi 321 steel under environmental conditions similar to those of a nuclear power plant. the evaluation was performed using the slow strain rate test (ssrt) method, which is one of the most recent techniques developed to evaluate the scc process in laboratory. the tests were performed under temperature of 288 °c and pressure of 8 mpa, in water environment (containing 1000 ppm of b and 2,2 ppm de li) and in inert atmosphere (2). the results indicated that the strain rate of 3x10-7 s-1 is adequate to perform comparative evaluations of the scc process using the ssrt test. they also revealed that the aisi321 steel presents a low susceptibility to scc for the analyzed conditions.
Cytogenetic analysis of the Y chromosome of native brazilian bovine breeds: preliminary data
Issa,é.C.; Jorge,W.; Egito,A.A.; Sereno,J.R.B.;
Archivos de Zootecnia , 2009, DOI: 10.4321/S0004-05922009000100010
Abstract: the present work is a preliminary cytogenetic study carried out on 29 males of the brazilian breeds curraleiro, crioulo lageano, junqueira and pantaneiro, available at embrapa genetic resources & biotechnology, brasília, df and promiss?o farm, poconé, mt. the objective was to investigate their y chromosome morphology, whether submetacentric or acrocentric, considered as markers of the taurine and zebuine subspecies, respectively. the results showed that of the six curraleiro animals analyzed, four had an acrocentric and two had a submetacentric y chromosome, indicating contamination by zebu breeds. all pantaneiro bulls analyzed had exclusively zebuine (acrocentric) y chromosome. on the other hand, the crioulo lageano and junqueira bulls had submetacentric y chromosomes, indicating their taurine origin.
Criopreserva??o de células espermatogênicas bovinas utilizando diferentes moléculas protetoras
Barbosa,A.P.M.; Martins,C.F.; Sereno,J.R.B.;
Archivos de Zootecnia , 2011, DOI: 10.4321/S0004-05922011000200014
Abstract: the objective of this study was to isolate mechanically bovine spermatogenic cells and assess their viability before and after cryopre-servation with three different cryoprotector molecules. the isolated cells presented an initial viability of 76.5%; after cryopreservation it was 51.7%, 55.5% and 58.8%, respectively for solutions with dmso, propanodiol, and dmso with propanodiol. the solution of dmso with propanodiol was significantly better (p<0.05) than that with only dmso, for preserve the cellular viability. thus was possible to verify that spermatogenic cells isolated mechanically can be cryopreserved-thawed with larger viability than 55% in the solutions contends propanodiol. the cells frozen with the association of dmso and propanodiol presented the largest integrity rate after the thawed, and can be applied in studies with icsi.
Influência da administra o de extratos de duas plantas calcinogênicas sobre a fertilidade de ratos
Mello J.R.B.,Langeloh A.,Habermehl G.,Krebs H.C.
Arquivo Brasileiro de Medicina Veterinária e Zootecnia , 1999,
Abstract: Investigou-se o efeito de extratos aquosos de Solanum malacoxylon (Sendter) Solanaceae (SM) (sin.: S. glaucophyllum) e Nierembergia veitchii (Hook) Solanaceae (NV), plantas calcinogênicas encontradas no Brasil, sobre a reprodu o de ratos e sobre suas progênies. No experimento 1, ratos e ratas Wistar, em número variável conforme o grupo, receberam por via oral, durante os 40 dias anteriores ao acasalamento, extrato aquoso de ambas as plantas em dosagem equivalente à administra o diária de 10,9g×kg-1 de planta seca. Os resultados foram comparados com os de um grupo tratado diariamente com vitamina D3 (3,0mg×kg-1) e com os de um grupo-controle (salina). No experimento 2, ratas prenhes receberam, por via oral, três diferentes doses dos extratos de ambas as plantas (equivalente à administra o diária de 5,4; 10,9 e 21,7g×kg-1 de planta seca), durante toda a gesta o. Os resultados foram comparados com três grupos tratados com vitamina D3 (0,75; 2,25 e 3,75mg×kg-1) e um grupo-controle (salina). Quando administradas antes da gesta o, o ganho de peso das fêmeas e a fertilidade foram reduzidos nos grupos tratados com SM (11%) e vitamina D3 (11%). No grupo tratado com NV, a fertilidade também foi reduzida (25%), mas o desenvolvimento ponderal durante o tratamento n o foi afetado. Nos grupos tratados com SM e vitamina D3 anterior à gesta o, o número de filhotes por ninhada foi reduzido, assim como o seu peso ao nascer. Características de desenvolvimento e desempenho físico dos filhotes n o foram afetados em nenhum dos grupos. O tratamento das fêmeas com extrato aquoso de SM durante a gesta o causou redu o significativa e dose-dependente nas características reprodutivas estudadas. O mesmo foi observado com as fêmeas tratadas com vitamina D3. Com o extrato aquoso de NV n o foram observadas redu es nas taxas reprodutivas, quando as fêmeas foram tratadas durante a gesta o. Com as doses 10,9 e 21,7g×kg-1 de NV foram observadas anomalias morfológicas fetais (2,3 e 0,1%, respectivamente), também presentes nos filhotes de fêmeas tratadas com vitamina D3 (2,25mg×kg-1). A presen a de vitamina D3 e seus metabólitos nas plantas calcinogênicas provavelmente é responsável pela infertilidade observada, n o somente devido à toxicidade sistêmica, mas também devido aos seus efeitos específicos sobre o aparelho reprodutor.
Indica??o geográfica na conserva??o e agrega??o de valor ao gado Curraleiro da comunidade Kalunga
Neiva,A.C.G.R.; Sereno,J.R.B.; Fioravanti,M.C.S.;
Archivos de Zootecnia , 2011, DOI: 10.4321/S0004-05922011000300010
Abstract: the objective of this study was to show the importance of geographical indications, as a strategy of maintaining and aggregating value to the curraleiro cattle, and as a basis for future registration of the denomination of origin kalunga meat of curraleiro, by the remaining kalunga quilombo community in cavalcante situated in the state of goiás, brazil. recognition of the denomination of origin kalunga meat of curraleiro, will make establishment of a modality of sustainable exploration in the cerrado possible, as well as promote preservation of a bovine race well adapted to adverse conditions of this biome, improve their food availability and increase family income.
Influência da administra??o de extratos de duas plantas calcinogênicas sobre a fertilidade de ratos
Mello, J.R.B.;Langeloh, A.;Habermehl, G.;Krebs, H.C.;Bastos, F.C.;
Arquivo Brasileiro de Medicina Veterinária e Zootecnia , 1999, DOI: 10.1590/S0102-09351999000500011
Abstract: the effect of aqueous extract of solanum malacoxylon (sendter) solanaceae (sm) (sin.: s. glaucophyllum) and nierembergia veitchii (hook) solanaceae (nv), common calcinogenic plants in brazil, on the reproduction of rats and on their offsprings was investigated. in one set of experiments, male and female wistar rats were treated per os with aqueous extract of each plant at a dose corresponding to the daily administration of 10g′kg-1 of dried plant for 40 days before mating. in another set of experiments, pregnant rats were daily treated with three different doses of aqueous extracts of both plants (5.4; 10.9 and 21.7g′kg-1, equivalent to the administration of dried plants) from the first until the last day of pregnancy. saline and vitamin d3 treated male, female and pregnant rats were used as control in both experimental procedures. when administered before the pregnancy, the weight gain and the fertility were reduced in groups treated with sm (11%) and vitamin d3 (11%). in the nv group, fertility was reduced (25%) but the weight gain was not affected. the number of pups per litter and their weight were reduced in groups sm and vitamin d3, but in all groups the body development of the offsprings was not adversely affected. the treatment of the dams with sm during pregnancy causes significant and dose-related reduction of the fertility, as well as with vitamin d3. with an aqueous extract from nv it was not observed a significant reduction of the fertility, but the pups (2.3% in group treated with nv 10.9g′kg-1 and 0,1% in group treated with nv 21.7g′kg-1) presented morphological abnormalities, that were also observed with vitamin d3 (2.25mg′kg-1) treatment. the presence of vitamin d3 and metabolites in the calcinogenic plants is probably responsible for the infertility, not only because their systemic toxicity, but also because of the direct effects on the reproductive system.
Installation of the IMPAC technique in the Pelletron laboratory
Rao M.N.,Oliveira J.R.B.,Seale W.A.,Rizzutto M.A.
Brazilian Journal of Physics , 2003,
Abstract: A special target chamber for the direct production & recoil implantation of radioactive probes for perturbed angular correlation has been constructed and tested. Feasibility studies were made by reproducing the known quadrupole frequencies at 77Br and 111In probes in metallic zinc. Preliminary results were obtained on the lattice site dependence of Cd hyperfine field in Pd2MnSn Heusler alloy with the PAC technique.
Caracteriza??o fenotípica de ovelhas dos humedales de Ite, sul do Peru: dados preliminares
Montesinos,I.S.; Silva,M.C.; Lopes,F.B.; Fioravanti,M.C.S.; McManus,C.M.; Sereno,J.R.B.;
Archivos de Zootecnia , 2012,
Abstract: sheep farming is an important socioeconomic activity in peru, being one of the main sources of income for many rural families. the objective of the present study was to characterize the phenotype of adult ewes, from local flocks farmed in the ite wetlands, southern coast of peru. these animals were reared in a semi extensive system, on native pastures. thirteen morphometric traits were measured and analyzed using means, corr, glm, discrim and cluster procedures of the statistical program sas. three morphologic traits were also registered and three zoometric indices calculated. the results indicated that these ewes are smaller than specialized breeds, but had tendency for meat production and different body sizes, showing variability of biotypes between flocks, according to the management, geographical location and apparent racial miscegenation.
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