Light Requirements
Mostrando 13-24 de 167 artigos, teses e dissertações.
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13. Microstructural Characterization and Influence of Ceramography Method on the Microhardness of Sintering Agents Added Silicon Carbide
This study carried out the microstructural characterization, by light microscopy, of sintered SiC in the presence of liquid phase at temperatures of 1800, 1850 and 1900 ºC, added with Al2O3 and Y2O3 as well with Al2O3-YAG composite in the proportions of 5, 10 and 15% by weight. It was possible to observe the formation of microstructural patterns resulting f
Mat. Res.. Publicado em: 15/05/2017
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14. Phases quantification in DP600 steel welded by GTAW process using SEM and atomic force microscopy
The automotive industry is constantly under several challenges in many aspects, such as development of new materials and improvement their manufacturability. In order to achieve light weight, reduced emissions and ensure conductor safety, advanced high strength steels (AHSS) are able to fulfill these requirements. Dual phase steels (DP) are well suited for l
Mat. Res.. Publicado em: 20/02/2017
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15. Maternal habitat affects germination requirements of Anabasis setifera, a succulent shrub of the Arabian deserts
The effects of maternal habitat on light and temperature requirements during germination were assessed for the succulent desert shrub Anabasis setifera. Seeds were collected from the Mediterranean habitats of Egypt and the hyper-arid subtropical habitats of the United Arab Emirates (UAE). Seeds from the two populations were germinated in three temperature tr
Acta Bot. Bras.. Publicado em: 2016-03
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16. INFLUÊNCIA DO CONTEÚDO DE XILANAS NA BRANQUEABILIDADE, PROPRIEDADES HIGROSCÓPICAS, FISICO-MECÂNICAS E ÓPTICA DE POLPAS BRANQUEADAS DE EUCALIPTO
Bleached eucalypt kraft pulps are widely used in print and writing (P&W) and tissue paper manufacture. Among the quality requirements of pulp for these papers, xylan content has been controversial. The objective of this study was to evaluate the influence of xylan content on bleachability, hygroscopic, physic-mechanical and optical properties of the pulp. In
Quím. Nova. Publicado em: 2015-02
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17. Influence of artificial lighting on the performance and egg quality of commercial layers: a review
In Brazil, the egg production chain produces fresh eggs for the consumer market and for processing. Layers are housed in battery cage systems. Rearing and development farms are separate from egg-production farms. Considering the recent advance of Brazilian chicken egg production, scientific knowledge on management practices are required to disseminate and to
Rev. Bras. Cienc. Avic.. Publicado em: 2014-12
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18. Strengthening the composite protective shield of light-weight ship against ballistic impacts: analytical and experimental
Light and medium protection for small naval vessels guarantees their high performance and safety during the guard duties. In this study, a protective shield fabricated from Dyneema HB25 fibers has been utilized as an add-on layer on the coast guard boat hull. Finite element analyses have been conducted using Chocron's model. Two standards of gun-fire were em
Lat. Am. j. solids struct.. Publicado em: 2013-11
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19. A participação feminina nos conselhos de administração das empresas brasileiras: uma análise das características de formação e experiência profissional à luz da teoria do capital humano
This research is supported by human capital theory, to analyze the academic and professional experience of Brazilian board directors. The aim of this study is to analyze the characteristics of academic and professional experience that have contributed to the rise of women on the boards of directors of Brazilian joint stock companies, in light of human capita
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 06/09/2012
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20. Efeito de duas variedades de feijão (Phaseolus vulgaris) no metabolismo lipídico de hamsters / Effect of two beans varieties (Phaseolus vulgaris) in hamster lipid metabolism [Dissertation].
Carioca and black beans are the varieties of Phaseolus vulgaris most consumed on Brazil Southwest. It is well described that some legumes, as soy and cowpea beans, have hypocholesterolaemic effects. To test cholesterol-lowering properties of carioca and black beans, two biological assays were conducted. Golden Syrian hamsters, 21 days old, were housed indivi
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/08/2012
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21. Escola Alegria de Saber : uma escola brasileira no Japão (1995-2011) / Escola Alegria de Saber : uma escola brasileira no Japão (1995-2011)
This study aims to analyze Brazilian educational institutions located in Japan focusing on the institution Escola Alegria de Saber - EAS, established in 1995. These institutions were established to meet the demands for schooling for the children of Brazilian immigrants, known as dekassegui workers. The investigation revealed the migration process throughout
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/08/2012
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22. Representações sobre o agir: caminhos para a compreensão do papel da tutoria na EAD
Based on the concerns referring to the tutors work of distance education, this research, of ethnographic and netnographic nature, linked to the interpretivist paradigm of qualitative nature, and based on the Applied Linguistics, aimed at investigating, at the light of the epistemological assumptions of Sociodiscursive Interactionism (ISD) (Bronckart, 2004, 2
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/12/2011
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23. Influência do sombreamento no crescimento de mudas de três espécies amazônicas.
O objetivo deste trabalho foi avaliar o desempenho de mudas de caroba (Jacaranda copaia (Aubl.) D. Don.), jatobá (Hymenaea courbaril L.) e pau-de-balsa (Ochroma lagopus (Cav. ex. Lam.) Urban) sob diferentes níveis de sombreamento, em viveiro. O experimento foi realizado na Estação Experimental de Silvicultura Tropical (EEST) do Inpa, em Manaus, AM. O del
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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24. Metallographic analysis of the internal microstructure of orthodontic mini-implants
Effective orthodontic anchorage may be obtained by miniimplants inserted into the maxillary bones. However, the risk of miniimplant failure is one of the most important issues, especially the rupture of its structure referred to as fracture, mainly due to metal deficiencies. This study analyzed the internal microstructure of orthodontic mini-implants, ascert
Brazilian Oral Research. Publicado em: 2010-12