oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2019 ( 231 )

2018 ( 490 )

2017 ( 494 )

2016 ( 629 )

Custom range...

Search Results: 1 - 10 of 294693 matches for " Fabyano F e;Cruz "
All listed articles are free for downloading (OA Articles)
Page 1 /294693
Display every page Item
Métodos de agrupamento em estudo de divergência genética de pimentas
Faria, Priscila N;Cecon, Paulo R;Silva, Anderson R da;Finger, Fernando L;Silva, Fabyano F e;Cruz, Cosme D;Sávio, Filipe L;
Horticultura Brasileira , 2012, DOI: 10.1590/S0102-05362012000300012
Abstract: the objective of this study was to compare three methods to determine number of groups in studies with hierarquical cluster analysis, based at data from characterization of capsicum accessions, in order to identify those with the greatest power of discrimination. mojena method, tocher method and rmsstd method were applied to determine the optimal number of groups formed in final stage of the upgma method. forty nine capsicum chinense accessions from the vegetable germplasm bank of the universidade federal de vi?osa were analyzed, in relation to ten morphological characters for identifying the most similar accessions group, making possible the selection of superior genotypes, i.e., of commercial interest. the rmsstd method allowed to conclude on the existence of seven groups, with a greater power of discrimination for this method, compared to the tocher optimization method and the mojena method, which formed, respectively, four and three groups.
Experimental models of longitudinal abdominal incisional hernia in rats
Paulo Danilo N. S.,Pereira Fausto E. L.,Mata Ricardo F. da,Dauad Fabyano R.
Acta Cirurgica Brasileira , 1997,
Abstract: Abdominal incisional hernias in rats has been produced after resection of a segment of abdominal muscle. In a attempt to create a model of incisional hernia in rats, without resection of abdominal muscle, the following surgical procedures were performed: (a) Rats anesthetized with ether were submitted to a 4 cm long median incision, supra and infraumbilical, followed by dissection of the subcutaneous tissue 1.5 cm laterally to the median line in each side; after, one incision was performed in the linea alba and peritoneum, with the same extension of the skin incision; the skin incision was sutured. (b) Rats were submited to a suprapubic transversal incision and a scissors introduced through this incision and used to dissect the subcutaneous tissue at least 1.5 cm for each side of median line; after, the linea alba and peritoneoum were incised and the transversal skin incision sutured. (c) For control, rats were submitted to a resection of a 2.5 x 4 cm of the abdominal muscles, creating a large defect in the abdominal wall. All the animal, submitted to the three different procedures, developed similar well constituted hernias. We concluded that abdominal incisonal hernias are easily induced in rats after an incision of the abdominal wall, without partial resection of abdominal muscle, since the subcutaneous have been dissected at least 1.5 cm laterally to the median line.
Experimental models of longitudinal abdominal incisional hernia in rats
Paulo, Danilo N. S.;Pereira, Fausto E. L.;Mata, Ricardo F. da;Dauad, Fabyano R.;Paulo, Isabel C. A. L.;
Acta Cirurgica Brasileira , 1997, DOI: 10.1590/S0102-86501997000400004
Abstract: abdominal incisional hernias in rats has been produced after resection of a segment of abdominal muscle. in a attempt to create a model of incisional hernia in rats, without resection of abdominal muscle, the following surgical procedures were performed: (a) rats anesthetized with ether were submitted to a 4 cm long median incision, supra and infraumbilical, followed by dissection of the subcutaneous tissue 1.5 cm laterally to the median line in each side; after, one incision was performed in the linea alba and peritoneum, with the same extension of the skin incision; the skin incision was sutured. (b) rats were submited to a suprapubic transversal incision and a scissors introduced through this incision and used to dissect the subcutaneous tissue at least 1.5 cm for each side of median line; after, the linea alba and peritoneoum were incised and the transversal skin incision sutured. (c) for control, rats were submitted to a resection of a 2.5 x 4 cm of the abdominal muscles, creating a large defect in the abdominal wall. all the animal, submitted to the three different procedures, developed similar well constituted hernias. we concluded that abdominal incisonal hernias are easily induced in rats after an incision of the abdominal wall, without partial resection of abdominal muscle, since the subcutaneous have been dissected at least 1.5 cm laterally to the median line.
Divergência genética entre genótipos de pimenta com base em caracteres morfo-agr?nomicos
Ferr?o, Luis Felipe V;Cecon, Paulo Roberto;Finger, Fernando Luis;Silva, Fabyano F e;Puiatti, Mario;
Horticultura Brasileira , 2011, DOI: 10.1590/S0102-05362011000300016
Abstract: the genus capsicum comprises a varied group of hot and sweet peppers with a large number of species. the characterization of materials for genetic divergence becomes of paramount importance for breeding programs. multivariate techniques were used to evaluated the genetic divergence among 34 sub-samples of capsicum baccatum peppers from the horticultural germplasm bank from the federal university of vi?osa. five quantitative descriptors proposed by international plant genetic resources institute were utilized in a field experiment carried out in vi?osa, minas gerais state, brazil, in a randomized block design. the genetic divergence among the sub-samples was determined by cluster analysis and canonical variables. the variables fruit average weight, fruit length, fruit diameter, number of seeds per fruit and content of soluble solids were evaluated. there was significant difference among sub-samples for all descriptors evaluated. general agreement among all multivariate techniques used in the work was observed and it was possible to separate the sub-samples in five distinct groups. the sub-samples bgh 1739 and bgh 1646 stood out showing good potential for use in breeding programs aiming to produce good materials for fresh consumption or processing purposes.
Abordagem bayesiana para avalia??o da adaptabilidade e estabilidade de genótipos de alfafa
Nascimento, Moysés;Silva, Fabyano Fonseca e;Sáfadi, Thelma;Nascimento, Ana Carolina Campana;Ferreira, Reinaldo de Paula;Cruz, Cosme Dami?o;
Pesquisa Agropecuária Brasileira , 2011, DOI: 10.1590/S0100-204X2011000100004
Abstract: the objective of this work was to propose a bayesian approach for the eberhart & russell method to evaluate the phenotypic adaptability and stability of alfafa (medicago sativa) genotypes, as well as to evaluate the efficiency of the use of prior informative and noninformative distributions. data from a randomized block design experiment evaluating the forage dry weight of 92 genotypes were used. the bayesian methodology proposed was implemented in the free software r by the mcmcregress function of the mcmcpack package. to represent the noninformative prior distributions, a probability distribution with high variance was used; and, to represent the informative prior, a meta-analysis concept was adopted, characterized by the use of information provided by previous studies. the comparison between the prior distributions was done using the bayes factor, with the bayesfactor function of the mcmcpack package, which indicated that an informative prior is more appropriate under the conditions of this study.
Teaching for Equity, Learning about Discrimination in a Meritocratic Society
Fátima Cruz,Robert E. Stake
Qualitative Research in Education , 2012, DOI: 10.4471/qre.2012.07
Abstract: In this paper, we will examine key points for research attention in the effort to commit educational systems to equity education. We will examine the concepts of equity, equality and discrimination. We will give specific attention to the role of teacher educators. Teachers need to understand and to be able to see social discrimination in educational systems and policies and in classroom relationships. We will claim that equity education holds low priority even in those countries making the strongest efforts at social equity and protection of human rights. And the reason for low priority as we see it is the almost universal demand for discriminating among students on narrow academic grounds.
Free volume distributions inside a bidimensional granular medium
F. da Cruz,F. Lechenault,O. Dauchot,E. Bertin
Physics , 2005,
Abstract: We investigate experimentally within a two-dimensional cell the distribution of the free volume associated either to single grains or to clusters of grains. Our main result is that the logarithm of the probability to find a free volume per grain v_N^f in a cluster of N grains scales as N^alpha g(v_N^f), with alpha = 0.75. We interpret this non extensive scaling factor N^alpha as an evidence for the onset of long range correlations between the free volumes of individual grains. We also discuss the possible relation between g(v_N^f) and Edwards entropy.
Aplica??o da análise de agrupamento de dados de express?o gênica temporal a dados em painel
Nascimento, Moysés;Sáfadi, Thelma;Silva, Fabyano Fonseca e;
Pesquisa Agropecuária Brasileira , 2011, DOI: 10.1590/S0100-204X2011001100010
Abstract: the objective of this work was to determine the best alternative for the formation of homogeneous groups of gene expression series among the hierarchical clustering (ward) and optimization (tocher) methods, and to perform predictions regarding the gene expression of these series from a small number of temporal observations. the data used refer to the expression of genes that act on cell cycle of saccharomyces cerevisiae, and corresponded to 114 gene expression series, with ten-fold-change values (expression measure) each, over time (0, 15, 30, 45, 60, 75, 90, 105, 120, and 135 min). the parameter estimates of autoregressive models ar(p) were previously adjusted to individual series (from each gene) of microarray time series data and used as variables in the clustering process. gene expression predictions were made within each formed group from the adjustments in ar(p) model for panel data. the ward's method was the more suited for the formation of gene groups with homogeneous series. once these groups are obtained, it is possible to adjust the model ar(2) for panel-data, and successfully predict gene expression at a future time (135 min) from a small number of temporal observations (the nine other fold-change values).
Fertilizer policy in the developing countries: the case of Brazil
Malavolta, E.;Cruz, V. F. da;Morais, R. S.;
Anais da Escola Superior de Agricultura Luiz de Queiroz , 1973, DOI: 10.1590/S0071-12761973000100022
Abstract: this paper deals initially with the role of mineral fertilizers in increasing agricultural production: the relationship between the two variables is illustrated within global, regional national and local contexts. the pattern and trends in fertilizer usage in brazil are presented next, namely: increase in consumption in the period 1950/72; regional distribution; consumption as related to crops and cultivated land. it is shown that in less than a quarter or century fertilizer use has increased in the country nearly 12 fold, whereas world consumption was raised 7 fold, thus exceeding estimates based in several criteria. steps taken to secure the raise in fertilizer consumption above the historical trend are discussed: research experience for outlining fertilization recomendations; the transfer of the knowledge to the farmer by the extension work both official and private; the credit policy and special incentives for the purchase of fertilizer; the national policy for minumum proces of agricultural products; the implantation of a national fertilizer industry. it is considered that the brazilian experience adapted to similar local conditions in other developing countries, presents a possibility for achieving beneficial results without inflationary reflexes in the economy.
The importance of endogenous nutrition of chicks from divergent strains for growing tested by deutectomy
Gonzales, E;Leandro, NSM;Dalke, F;Brito, AB;Cruz, CP;
Revista Brasileira de Ciência Avícola , 2008, DOI: 10.1590/S1516-635X2008000300006
Abstract: effects of yolk sac removal (deutectomy) upon performance of chicks from three divergent strains were tested to evaluate the importance of endogenous nutrition on the post-hatch phase. chicks from three different strains (hy-line w98, cobb 500, and ja57) were submitted to a surgery procedure after hatching. half of them had the residual yolk removed, and the other constituted a sham-deutectomized group. after operation, chicks were designated to a 3 x 2 factorial design (3 strains x 2 presence/absence of yolk sac), in a total of six experimental groups and ten replications of two to four birds. during 14 experimental days all birds were fed ad libitum a 21% cp and 3050 kcal/kg em mash diet. data were analyzed by anova, and tukey's test (p<0.05). relative yolk sac weights were similar among chicks from different breeders, averaging 11.7% to 13.5%. comparing to sham-operated, deuctetomized chicks had lower weight gain at 7 and 14d, indicating that endogenous nutrition, via yolk sac, is very important to galliform birds whatever their strain. hy-line deutectomized chicks gained 40% less body weight at the 7th day as compared to their sham counterparts. analysis of the same criterion to cobb and ja57 groups revealed a decrease of 16.1% and 10.8%, respectively, on weight gain efficiency. at the 14th rearing day, hy-line chicks had the lowest weight gain, followed by ja57s' and cobbs'. the results suggested that chicks selected for fast growth are less dependent on endogenous nutrition, responding better when exogenous nutrition is associated to yolk assimilation.
Page 1 /294693
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.