Additive Facts
Mostrando 1-8 de 8 artigos, teses e dissertações.
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1. O Desenvolvimento da Flexibilidade do Cálculo Multiplicativo em Alunos do 3.° Ano
Resumo Este artigo tem como objetivo compreender o modo como os alunos desenvolvem a flexibilidade de cálculo multiplicativo num contexto de ensino exploratório, pretendendo responder a três questões de investigação: (i) Quais as estratégias usadas pelos alunos quando resolvem tarefas de multiplicação?; (ii) Como evoluem as estratégias usadas pelos
Bolema. Publicado em: 01/08/2019
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2. Effective population size and genetic gain expected in a population of Coffea canephora
Abstract This work aimed to study the effective population size and genetic gain in a population of robusta coffee (Coffea canephora Pierre) and verify the possibility of using recurrent selection. The experiment comprised 25 treatments, consisting of 21 C. canephora progenies and four C. arabica (cultivars) grown in Brazil. The experimental design was a 5x5
Crop Breed. Appl. Biotechnol.. Publicado em: 11/04/2019
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3. Contagem numérica e recuperação de fatos aditivos em estudantes com síndromes do x-frágil e de prader-willi
As dificuldades de aprendizagem matemática constituem um campo bastante complexo e ainda relativamente pouco explorado. Pesquisas com síndromes associadas ao baixo desempenho matemático indicam que há diferentes perfis cognitivos subjacentes às dificuldades na matemática e nos mostram que nem toda dificuldade de aprendizagem matemática é originada da
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
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4. Sex Determination in Bees. II. Additivity of Maleness Genes in APIS MELLIFERA
Twenty-two randomly taken morphological characters were used in order to estimate the Mahalanobis generalized distance between diploid males, diploid workers, haploid males and triploid workers. It was found that adult diploid males are metamales and triploid females are slightly masculinized. These facts indicate that the maleness genes are slightly additiv
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5. A phylogeny for the principal alleles of the human phosphoglucomutase-1 locus.
The results of phosphoglucomutase-1 (PGM1) typings by starch gel electrophoresis and subtypings by isoelectric focusing are presented for a sample of Japanese. A distinction made on the basis of isoelectric focusing (termed "+" and "-") is nonrandomly associated with each of the products of the four most common electrophoretic alleles (PGM1(1), PGM1(2), PGM1
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6. What Is the Role of Theories in the Study of Schizophrenia?
As an epilogue to the themed papers on “Theories of Schizophrenia” in this issue of Schizophrenia Bulletin, this article reviews some basic philosophy of science principles in regard to the role of theories in the evolving state of a natural science discipline. While in early phases inductive and abductive logic are the primary vehicles for organizing ob
Oxford University Press.
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7. Sensory neurons in culture: Changing requirements for survival factors during embryonic development
The effect of nerve growth factor (NGF) and medium conditioned by glioma cells (GCM) on the survival of chicken sensory neurons in culture was investigated. Neurons were isolated from embryos 8 days (E8) to 16 days (E16) old and the proportion of surviving neurons was determined after 2 days in culture. In the absence of NGF or GCM, essentially no neurons su
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8. Adaptation at Specific Loci. II. Demographic and Biochemical Elements in the Maintenance of the Colias Pgi Polymorphism
Demographically oriented sampling in the wild and biochemical study of allozymes in the laboratory have been used to probe maintenance of the phosphoglucose isomerase polymorphism of Colias butterflies.—The several alleles at this locus show negative or no covariation among their frequencies in the wild. This rules out Wahlund effects as a cause of observa