Classes Of Coefficients Of Variation
Mostrando 1-11 de 11 artigos, teses e dissertações.
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1. Influência do uso de cinza volante na elevação adiabática de temperatura e resistência à compressão de concretos
RESUMO A construção de grandes edifícios tem requerido a execução de blocos de fundação de grandes dimensões, com volumes que chegam a milhares de m3 de concreto. Em geral, estas estruturas são executadas em concretos autoadensáveis e/ou de altas resistências, resultando em elevados consumos de aglomerante. Nesses casos, o emprego de cinza volante
Matéria (Rio J.). Publicado em: 10/06/2019
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2. DESENVOLVIMENTO DE MÉTODO PARA DETERMINAÇÃO DE RESÍDUOS DE PESTICIDAS EM ALFACE (Lactuca sativa L.) PRODUZIDA EM SISTEMA CONVENCIONAL / DEVELOPMENT OF METHODS FOR DETERMINATION OF RESIDUES OF PESTICIDES IN LETTUCE (Lactuca sativa L.) PRODUCED IN CONVENTIONAL SYSTEM
Lettuce (Lactuca sativa) has a great, being mainly consumed in natura. In order to ensure greater productivity, pesticides from different chemical classes have been used to improve its production. Although these pesticides bring benefits, increasing agricultural production, their toxicity should be considered. As for this reasor it is necessary to have effec
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/02/2010
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3. Classificação da qualidade dos experimentos com cana de açúcar / Rating the quality of experiments with sugarcane
O coeficiente de variação como medida de precisão experimental tem sido utilizado para diversas culturas. O presente trabalho teve como objetivo geral avaliar o coeficiente de variação e acurácia seletiva como estatísticas candidatas a precisão experimental em ensaios com cana de açúcar. Objetivos específicos: (i) Propor faixas de classificação
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 04/02/2010
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4. DEVELOPMENT OF METHODS FOR DETERMINATION OF RESIDUES OF PESTICIDES IN LETTUCE (Lactuca sativa L.) PRODUCED IN CONVENTIONAL SYSTEM / DESENVOLVIMENTO DE MÉTODO PARA DETERMINAÇÃO DE RESÍDUOS DE PESTICIDAS EM ALFACE (Lactuca sativa L.) PRODUZIDA EM SISTEMA CONVENCIONAL
Lettuce (Lactuca sativa) has a great, being mainly consumed in natura. In order to ensure greater productivity, pesticides from different chemical classes have been used to improve its production. Although these pesticides bring benefits, increasing agricultural production, their toxicity should be considered. As for this reasor it is necessary to have effec
Publicado em: 2010
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5. TRANFORMADA WAVELET E REDES NEURAIS ARTIFICIAIS NA ANÁLISE DE SINAIS RELACIONADOS À QUALIDADE DA ENERGIA ELÉTRICA / WAVELET TRANSFORM AND ARTIFICIAL NEURAL NETWORKS IN POWER QUALITY SIGNAL ANALYSIS
This work presents a different method for power quality signal classification using the principal components analysis (PCA) associated to the wavelet transform (WT). The standard deviation of the detail coefficients and the average of the approximation coefficients from WT are combined to extract discriminated characteristics from the disturbances. The PCA w
Publicado em: 2009
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6. Modelo computacional para determinação do risco econômico em culturas irrigadas / Computational model for economical risk determination in irrigated cultures
The agricultural companies were submitted to risky conditions, so the utility of deterministic models to planning is relatively limited. That implies in not despise the randomness of some coefficients and to introduce them in the project analysis. As a proposal of this work a Computational model for risk determination in irrigated cultures was elaborated for
Publicado em: 2005
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7. Genetic variation as a test of natural selection.
Allozymic variation encoded by 26 loci was analyzed electrophoretically in 507 specimens representing 12 populations of green toads, Bufo viridis, in Israel and the Vis Adriatic Island. Genetic variation in Bufo viridis is higher than in any vertebrate yet studied. Mean heterozygosity per locus per individual (H) is 0.133 (range, 0.105 to 0.159). H is highe
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8. Measuring Selection Coefficients Affecting the Alcohol Dehydrogenase Polymorphism in DROSOPHILA MELANOGASTER
This paper describes a perturbation experiment on the frequency of the F and S Alcohol dehydrogenase (Adh) alleles of D. melanogaster. Fifty-four isofemale lines set up from three wild populations and with initial F frequencies of either 0.25, 0.50 or 0.75 were maintained on standard laboratory food medium at 22°. At generations 4, 12 and 20 the lines were
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9. Sensitive Assay for Antifungal Activity of Glucan Synthase Inhibitors That Uses Germ Tube Formation in Candida albicans as an End Point
We implemented a simple, sensitive, objective, and rapid cellular assay to reveal the antifungal activity of a novel class of glucan synthase inhibitors. The assay, especially useful for early drug discovery, measures the transformation of Candida albicans from the yeast form to the hyphal form. Test compounds were ranked by potency (50% inhibitory concentra
American Society for Microbiology.
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10. Distribution of class II transposase and resolvase genes in soil bacteria and their association with mer genes.
Southern hybridization was performed on 30 gram-negative, mercury-resistant soil bacteria isolated from three terrestrail sites in Great Britain; two of these sites were mercury polluted (SO and SE), and one was pristine (SB). Most of the isolates (20 of 30) hybridized to probes encoding regions of the transposase (tnpA) and resolvase (tnpR) genes from Tn501
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11. Adaptation at Specific Loci. I. Natural Selection on Phosphoglucose Isomerase of Colias Butterflies: Biochemical and Population Aspects
Electrophoretic variants of phosphoglucose isomerase (PGI) in Colias butterflies have been studied from field and laboratory viewpoints. The transmission pattern is that of a dimeric enzyme controlled by one structural gene locus. Populations usually harbor four to six allelic mobility classes. These mobility classes are shared among species complexes, thoug