Avaliação de quatro alternativas de análise de experimentos em látice quadrado, quanto a estimação de componentes de variância.

Estudou-se, no presente trabalho, a eficiencia das seguintes alternativas de analise de experimentos realizados em latice quanto a precisao na estimacao de componentes de variancia, atraves da simulacao computacional de dados. i) analise intrablocos do latice com tratamentos ajustados (primeira analise); ii) analise de latice em blocos casualizados completos (segunda analise); iii) analise intrablocos do latice com tratamentos nao-ajustados (terceira analise); iv) analise do latice como blocos casualizados completos, utilizando as medias ajustadas dos tratamentos, obtidos a partir da analise com recuperacao da informacao interblocos, tendo como quadrado medio do residuo a variancia efetiva media dessa analise do latice (quatro analise). Os resultados obtidos mostram que se deve utilizar o modelo de analise intra blocos de experimentos em latos para se estimar em componentes de variancia sempre que a eficiencia relativa do delineamento em latice, em relacao ao delineamento em Blocos Completos Casualizados, for superior a 100% e, em caso contrario, deve-se optar pelo modelo de analise em Blocos Casualizados Completos. A quarta alternativa de analise nao deve ser recomendada em qualquer das duas situacoes

Oxandrolone use in adult burn patients. Systematic review and meta-analysis

PURPOSE:This study is a systematic literature review and meta-analysis concerning the use of a testosterone synthetic analog, oxandrolone, and its use in severe adult burns.METHODS:Randomized prospective clinical studies, in English, Portuguese or Spanish, were sought on the following databases: MEDLINE, COCHRANE, EMBASE and LILACS. There was no restriction in relation to the publication date.RESULTS: This search produced 24 studies on MEDLINE and twelve articles were presented on the COCHRANE database .Sixteen were excluded due to the title not being related to this search or by including children. Of the eigth residual studies, after adaptation to the inclusion criteria, only four were selected. After analyzing the results, two were discarded since they did not present adequate patient characterization and the facts on these articles were analyzed differently from the others, hindering the meta-analysis.CONCLUSION:The analysis of the available data demonstrated significant benefits (p<0.05) considering lesser loss of corporal mass, lesser nitrogen loss, and shorter donor area healing time, when Oxandrolone was used, comparatively with the control group (placebo or not).Federal University of São PauloUNIFESPSciEL

Efficiency of circulant diallels as compared to complete diallels for the estimation of combining ability.

The efficiency of circulant and complete diallels was compared regarding the estimation of the general (GCA) and specific (SCA) combining ability. Maize population ear yield data from a 28 x 28 diallel were used. The circulan: diallels were formed by resampling data from the complete diallel. Each circulant diallel was represented by s crosses per parent, and s by an odd number between 3 and 25. Athousand circulant diallels were generatedfor each s value. Estimators for genetic parameters were defined to study the diallels' efficiency. GCA and SCA estimates from the circulant diallels were close to those from the complete diallel, except for a few of lhe parents (s=3). Best results in terms of selecting parents and hybrid combinations were obtained with s=19. The jeasibility of using circulant diallels depends on the genetic background of the populations as well as on lhe goals of lhe breeding program. Comparou-se a eficiência dos dialelos circulante e completo para estimar as capacidades geral (CGC) e específica (CEC) de combinação. Foram utilizados dados de produção de espigas de um dialelo completo de 28 populações de milho. Os dialelos circulantes foram obtidos por reamostragem do dialelo completo, sendo cada um deles representado por s cruzamento ímpares, variando de 3 a 25. Foram gerados 1000 dialelos circulantes para cada valor de s e definidos alguns estimadores. As estimativas de CGC e CEC dos dialelos circulantes foram semelhantes às do dialelo completo, exceto para alguns genitores, para o valor s=3. O dialelo circulante com s=19 permitiu selecionar os melhores genitores e combinações híbridas. Constatou-se que a viabilidade dos dialelos circulantes depende das populações estudadas e do objetivo do programa de melhoramento

Genetic components of combining ability in a complete diallel.

Obtained g and Sii values were associated to theoretical concepts of the respective parameters in a complete diallel with 28 parents and the simulation of five hypothetic variables with five different d/a relations (0, 0.5, 1.0, 1.5, and 2.0). These were controlled by a single gene with two alleles whose parents were represented by different frequencies of the favorable allele (1/28, 2/28,....,28/28). The conclusion was drawn that the existence of dominance deviations in the loci regulating the trait influences the GCA estimates considerably and that there is a high correlation (0.96) between the absolute Sii and the respective values. The joint evaluation of g1 and Sii estimates provides information on the genetic quality of the populations of the diallel

New constructions of twistor lifts for harmonic maps

We show that given a harmonic map $\varphi$ from a Riemann surface to a classical compact simply connected inner symmetric space, there is a $J_2$-holomorphic twistor lift of $\varphi$ (or its negative) if and only if it is nilconformal. In the case of harmonic maps of finite uniton number, we give algebraic formulae in terms of holomorphic data which describes their extended solutions. In particular, this gives explicit formulae for the twistor lifts of all harmonic maps of finite uniton number from a surface to the above symmetric spaces.Comment: Some minor changes and a correction of Example 8.

First case of clinical cat aelurostrongylosis in the brazilian amazon: Clinical and molecular insights

Aelurostrongylus abstrusus is the most important respiratory parasite infecting domestic cats worldwide. Nevertheless, most records and epizootiological data come from Europe, whilst poor and fragmentary information are available for other regions, including the Americas. The present article describes the first description of cat aelurostrongylosis from Amazonia, Brazil. Eighty-one cats, 13 from a shelter and 68 admitted at the Teaching and Research Unit in Veterinary Medicine (UV) at the Federal University of Acre (UFAC), Brazil, were included in the study. For all cats, three faecal samples from consecutive defecations were examined using the Baermann’s technique. Nematode first stage larvae (L1), retrieved in 2/81 (2.5%) samples, were microscopically identified as A. abstrusus and then subjected to a molecular assay able to identify the three most important species of metastrongyloids infecting felids. This test confirmed the A. abstrusus identity in one sample, while the second scored negative. The cat with confirmed aelurostrongylosis showed radiographic changes, i.e., an interstitial pattern, compatible with the infection. The other cat, which scored positive at the Baermann’s examination, was apparently healthy at the physical examination and showed no thoracic alterations. The occurrence of A. abstrusus in domestic cats from Brazilian Amazon is herein demonstrated for the first time. Clinical, epizootiological and molecular implications are discussed

BRS Caimbé - variedade de milho precoce.

bitstream/CNPMS-2010/22528/1/Com-173.pd

Variedade de milho BRS 4103.

bitstream/item/82125/1/Com-153.pd

Plant and animal endemism in the eastern Andean slope: challenges to conservation

Andean slope: challenges to conservatio