Natural Numbers
Mostrando 13-24 de 433 artigos, teses e dissertações.
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13. El ETM de Futuros Profesores de Primaria en un Trabajo sobre los Números Naturales en Cualquier Base
Abstract Primary school teachers’ training in France and Greece emphasizes natural numbers and the positional system. The introduction of bases other than ten shows that personal ETMs are guided by semiotic component (representamen) reduced to the ten base and that some of the work can be interpreted as a change of domain between the ten base and the other
Bolema. Publicado em: 2016-04
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14. METAHEURISTICS EVALUATION: A PROPOSAL FOR A MULTICRITERIA METHODOLOGY
ABSTRACT In this work we propose a multicriteria evaluation scheme for heuristic algorithms based on the classic Condorcet ranking technique. Weights are associated to the ranking of an algorithm among a set being object of comparison. We used five criteria and a function on the set of natural numbers to create a ranking. The discussed comparison involves th
Pesqui. Oper.. Publicado em: 2015-12
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15. ANIMAL MODELS FOR THE STUDY OF LEISHMANIASIS IMMUNOLOGY
Leishmaniasis remains a major public health problem worldwide and is classified as Category I by the TDR/WHO, mainly due to the absence of control. Many experimental models like rodents, dogs and monkeys have been developed, each with specific features, in order to characterize the immune response to Leishmania species, but none reproduces the pathology obse
Rev. Inst. Med. trop. S. Paulo. Publicado em: 2014-01
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16. Integral transform solution of natural convection in a square cavity with volumetric heat generation
The generalized integral transform technique (GITT) is employed to obtain a hybrid numerical-analytical solution of natural convection in a cavity with volumetric heat generation. The hybrid nature of this approach allows for the establishment of benchmark results in the solution of non-linear partial differential equation systems, including the coupled set
Braz. J. Chem. Eng.. Publicado em: 2013-12
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17. A importância da lei de Gay-Lussac para a classificação dos compostos orgânicos
This article shows the genesis of the law of volumes of combining gases, formulated by Gay-Lussac in 1808, and how it allowed the expression of the composition of organic compounds in terms of whole numbers of volumes, thus leading to the first classification of organic compounds, formulated by Dumas and Boullay in 1828. It was from this work that Organic Ch
Quím. Nova. Publicado em: 2013
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18. Importância do tecido adiposo marrom na ativação da termogênese induzida pela injeção central do C75, um inibidor da ácido graxo sintase / Importance of brown adipose tissue in the activation of thermogenesis induced by central injection of C75, a fatty acid synthase inhibitor
C75, a synthetic inhibitor of fatty acid synthase, causes anorexia and weight loss in rodents, but the underlying mechanisms are not totally known. Thus, the hypothesis tested in this work was that brown adipose tissue (BAT), an organ with important role for control of thermogenesis, could be involved in the anti-obesity effects of fatty acid synthase inhibi
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/08/2012
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19. DIETA, DINÂMICA POPULACIONAL E ECTOPARASITAS DE PHRYNOPS GEOFFROANUS (SCHWEIGGER, 1812) (TESTUDINATA, CHELIDAE) DO BAIXO SÃO FRANCISCO, POÇO REDONDO, SE. / DIET, AND POPULATION DYNAMICS OF PHRYNOPS GEOFFROANUS ECTOPARASITES (SCHWEIGGER, 1812) (TESTUDINATA, CHELIDAE) THE LOWER SAN FRANCISCO, POÇO REDONDO, SE.
Population of P. geoffroanus of Unidade Unidade de Conservação Estadual Monumento Natural Grota do Angico (MNGA) (3740W; 0939S) was studied in relation of their diet, morphometry, growth rates and mass gain, structure and dynamic population and parasites (leeches). The sampling of specimens was performed in monthly campaigns over a year (between January an
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/05/2012
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20. Morfofisiologia do sistema genital masculino de ratos púberes e adultos após privação androgênica durante a pré-puberdade / Morphophysiology of male reproductive system of adult and pubertal rats after androgen deprivation during prepuberty
Endocrine disrupters are chemicals that can act as agonists or antagonists of endogenous hormones, interfering with the homeostasis of the organism. Since the endocrine system plays a critical role in the development and function of the male reproductive system, this is an especially vulnerable target of potential endocrine perturbations. The literature pres
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 06/02/2012
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21. Microsatellite diversity and chromosome number in natural populations of Trifolium riograndense Burkart
Twenty eight natural populations of Trifolium riograndense Burkart, an important forage legume from native pastures of the state of Rio Grande do Sul, Brazil, were evaluated for genetic diversity with eight Simple Sequences Repeats (SSR) markers. Chromosome numbers were also determined. The eight markers were polymorphic, with 35 alleles and an average of 4.
Scientia Agricola. Publicado em: 2012-04
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22. Population genetic structure of Sisyrinchium micranthum Cav. (Iridaceae) in Itapuã State Park, Southern Brazil
Sisyrinchium micranthum Cav. is a member of the family Iridaceae, which is distributed over the American continent. In Brazil, this species is found, not only in disturbed areas and coastal regions, but is also very common in urban centers, such as public parks, during the spring. Chromosome counts for North American specimens are 2n = 32 and 2n = 48, wherea
Genetics and Molecular Biology. Publicado em: 02/02/2012
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23. COMPRESSION OF NATURAL NUMBERS, SEQUENCE OF BITS AND GRAPHS / COMPRESSÃO DE NÚMEROS NATURAIS, SEQUÊNCIA DE BITS E GRAFOS
Esta tese aborda os problemas de compressão para os seguintes tipos de dados: sequência de bits e grafos web. Para o problema de compressão de sequência de bits, demonstramos a relação entre algoritmos de intercalação e codificadores de fonte binária. Em seguida, mostramos que os algoritmos de intercalação binária (Hwang e Lin, 1972), recursivo (
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/09/2011
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24. A APRENDIZAGEM DE NÚMEROS RACIONAIS NA FORMA FRACIONÁRIA NO 6 ANO DO ENSINO FUNDAMENTAL: ANÁLISE DE UMA PROPOSTA DE ENSINO
As dificuldades enfrentadas por professores e alunos no ensino e na aprendizagem dos números racionais na forma fracionária motivaram a escolha do tema. A partir de estudos anteriores, da experiência como docentes e de uma revisão da literatura sobre o tema, foi construída e desenvolvida uma proposta de ensino para o 6 ano do Ensino Fundamental. Essa pr
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 07/07/2011