Wood Property
Mostrando 13-24 de 24 artigos, teses e dissertações.
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13. DESEMPENHO DE DUAS ESPÉCIES FLORESTAIS EM COMBINAÇÃO COM CASCA DE ARROZ NA FABRICAÇÃO DE PAINÉIS CIMENTOMADEIRA / PERFORMANCE OF TWO SPECIES IN COMBINATION WITH RICE HUSK IN THE MANUFACTURE OF CEMENT-WOOD PANELS
The present paper had as objective the evaluation of performance of panels composed by cement and different proportions of two combined wooden species with rice husk. There, were applied treatments where the levels of wooden residues were 0, 25, 50, 75 and 100%, while the proportion of rice husk was 100, 75, 50, 25 and 0%, respectively. The wood species in t
Publicado em: 2009
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14. Contribuições para a conservação do patrimônio histórico edificado em madeira da cidade de Antônio Prado/RS
This proposed work presents a study about the conservation of historic buildings of wood. The southern region of Brazil presents large collection wooden buildings built by European immigrants that colonized the region in the late nineteenth century and the first half of this century. However, there are no specific programs for the conservation of this herita
Publicado em: 2009
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15. Utilização de técnicas não destrutivas para caracterização de madeiras de Pinus caribaea Var. hondurensis e de Eucalyptus grandis
The Brazilian forestry sector plays an important role in the economy of the country and its industries need to achieve excellence in product quality to win the consumer market. The development of new technologies and the improvement of techniques already known is the most efficient way to improve the quality of products manufactured by the forest industry an
Publicado em: 2009
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16. Characterization of wood known in the Brazilian Amazon as mata-mata (Lecythidaceae fam. A. Rich.). / CaracterizaÃÃo das madeiras conhecidas na AmazÃnia Brasileira como MatÃ-matà (Lecythidaceae fam. A. Rich).
In spite of the great diversity of species of the Amazon forest, only a limited number of species is commercially exploited for wood production. This fact shows that the use of forest areas is only partial, with technical, economical and environmental disadvantageous consequences. A possible way to reduce this situation is the insertion of new species in the
Publicado em: 2008
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17. Painel de bambu laminado colado estrutural / Bamboo structural glued laminated panel
The search for products manufactured with renewable raw material which can be produced through an industrialization which does not cause environmental impacts led this research work to considerate the use of bamboo culm as woody material to manufacture structural panels that can be used as construction material. Bamboo presents some advantages over other mat
Publicado em: 2008
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18. A dinâmica caleidoscópica do processo de aprendizagem coloborativa no contexto virtual:: um estudo na perspectiva da complexidade/caos
In recent years there has been significant amoung of research guided by completxity and chaos theories in the area of Applied linguistics (Larsen-Freeman, 1997; Paiva, 2005; van Lier, 2004, Lantolf, 2006, Cameron and Deignan, 2006, among others). The ideas of complexity/chaos consider the inter-relation of agents in a complex system is dynamic, non-linear, o
Publicado em: 2008
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19. Efeito da aplicação do lodo de esgoto e de fertilização mineral no crescimento e propriedades da madeira de árvores de Eucalyptus grandis W. Hill ex. Maiden / Effect of the application of the sewage sludge and mineral fertilization in the growth and the wood properties of Eucalyptus grandis trees W. Hill. ex. Maiden
As plantações sustentáveis e de alta produtividade de espécies de eucalipto podem contribuir para a solução dos desafios ligados a oferta de madeira para os diversos segmentos industriais, bem como os de ordem ambiental e social existentes no Brasil e no mundo. As pesquisas experimentais têm demonstrado que as fertilizações mineral e orgânica (bios
Publicado em: 2007
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20. Avaliação físico-química de cachaças comerciais e estudo da influência da irradiação sobre a qualidade da bebida em tonéis de carvalho / Physical-chemical evaluation of commercial sugar cane spirits and the study about the quality and influence of the irradiation on the beverage and on the oak barrels
It was performed in this study a survey on the quality of commercial sugar cane spirits. The problems that the cachaça faces, mainly in the international market, are due to its low quality and to the lack of standardization of the drink. Commercial samples of sugar cane spirits were analyzed according to the standards of the identity and quality established
Publicado em: 2005
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21. Avaliação da utilização de redes neuronais aplicadas a processos quimicos
This work presents some important aspects when applying neural networks for chemicai process simulations. Neural networks are used in two different industrial processes providing a way of comparison of difficulties and potentialities for the application of this technique. Currently at Ripasa S/A. one of the largest paper industries in Brazil, the raw materia
Publicado em: 2000
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22. A transcriptional roadmap to wood formation
The large vascular meristem of poplar trees with its highly organized secondary xylem enables the boundaries between different developmental zones to be easily distinguished. This property of wood-forming tissues allowed us to determine a unique tissue-specific transcript profile for a well defined developmental gradient. RNA was prepared from different
The National Academy of Sciences.
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23. Staphylococcus aureus Cowan I. Potent stimulus of immunoglobulin M rheumatoid factor production.
These studies demonstrate that Staphylococcus aureus Cowan I (SAC), a protein A-positive Staphylococcal strain, is a potent and consistent inducer of IgM rheumatoid factor production by normal human peripheral blood mononuclear cells. The frequency and magnitude of this response greatly exceeded that of parallel cultures stimulated with pokeweed mitogen or t
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24. Effects of Temperature, Agitation, and Donor Strain on Chromosome Transfer in Escherichia coli K-12
Recombinant production in Escherichia coli K-12 can be described by three parameters: (i) the distance x of a selected male marker from the donor origin; (ii) the gradient constant k (the probability of interruption of the donor chromosome per unit distance during transfer into a recipient cell); and (iii) the extrapolate number A (the probability that a don