Plant Barriers
Mostrando 13-24 de 50 artigos, teses e dissertações.
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13. Estudo do processo de cristalização de sacarose a partir de soluções provenientes de cana-de-açúcar por resfriamento controlado
Today, Brazil is the major producer and exporter of sugar in the world. In the last harvest 2008/2009, 31.5 millions tons were produced, of which 60% were exported providing a 40% of international market share. However, sugar is a product that has commercial difficulties, due to the hard restrictions, such as rates, subsidizes and technical barriers like the
Publicado em: 2009
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14. Integração das principais tecnologias de obtenção de etanol através do processamento de celulose (2ª geração) nas atuais usinas de processamento de cana-de-açúcar (1ª geração). / Integration of ethanol production technologies throw the cellulose processing (2nd generation) on existing sugar cane processing units (1st generation).
The demand for energy has been increasing due to world development. Renewable energy of biomass, biofuel and electric energy have an important role to assist this growth, due to sustainable development policies and to the pressure of global organizations. The main aim of this dissertation is to demonstrate that the integration of second-generation technologi
Publicado em: 2009
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15. Adaptabilidade de híbridos entre Gossypium barbadense E G. hirsutum N contendo o gene cry1Ac
Hybrids among transgenic plants and related species are expected to occur if they are sympatric and when there are not crossing barriers; as is the case, in Brazil, of cry1Ac transgenic cotton and Gossypium barbadense. This species has been maintained as dooryard plants, and should be preserved as a genetic resource. Hybrids were evaluated about traits relat
Publicado em: 2009
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16. Evaluación de barreras vegetales en el manejo integrado de la mancha anular del papayo (PRSV-P) en Michoacán, México
The effect of plant barriers as a component of an integrated management program (IM) was validated and adapted in 1999, in Michoacan, Mexico, to control papaya ringspot, caused by papaya ringspot potyvirus type-P (PRSV-P). A split-plot design was established with two experimental factors: plant barriers and components of IM: IM without oil sprinkling (IM-O),
Summa Phytopathologica. Publicado em: 2008-12
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17. Uso do óleo vegetal em motor estacionário de ciclo diesel / Vegetable oil use in stationary engine of diesel cycle
In terms of liquid biofuels, the questions related to alcohol are in a developed level with the creation of a productive chain where all the processes are technologically decided since the production of the sugar cane until the alcohol consumption with the development of the multifuel cars. As for the use of vegetable oils, some barriers must be overcome, ma
Publicado em: 2008
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18. Soluções de e-business integradas ao ERP a serviço da gestão dos negócios : O caso da Companhia Siderúrgica Nacional. 2007 / Solutions of e-business integrated ERP to service of the business management: The case of the Companhia Siderúrgica Nacional. 2007
The general goal in this research consists of analyzing, in the Companhia Siderúrgica Nacional (CSN), the largest steel plant of Latin America, the preponderant factors in the implementation of e-business solutions with ERP and to verify its relevance degrees. The e-business model is established basing on three key points for the business, on a side is Supp
Publicado em: 2007
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19. A strategy for obtaining social benefits from the gene revolution
The strategy described in the present paper offers details about the possibility for Brazil to play a more substantial role in the gene revolution. If successfully applied, the powerful science-based technology currently available in Brazil can contribute to extend the benefits of the gene revolution to the poorest countries, very much like the Green Revolut
Brazilian Journal of Medical and Biological Research. Publicado em: 2004-10
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20. Meiose e viabilidade do pÃlen em Solanum commersonii ssp. e Solanum tuberosum L. / Meiosis and pollen viability in Solanum commersonii ssp. and Solanum tuberosusm L.
One of the main difficulties to promote genes introgression from wild species to the cultivated species consists in the ploidy barriers, endosperm balance number (EBN) and meiotic abnormalities. In this work the evaluations consisted of pollen viability, meiosis and frequency of non-reduced pollens, with the objective to indicate promising materials, which m
Publicado em: 2004
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21. The chemistry involved in the steam treatment of lignocellulosic materials
Pretreatment of lignocellulosic materials is essential for bioconversion because of the various physical and chemical barriers that greatly inhibit their susceptibility to bioprocesses such as hydrolysis and fermentation. The aim of this article is to review some of the most important pretreatment methods developed to date to enhance the conversion of lignoc
Química Nova. Publicado em: 2003-12
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22. Biologia de reprodução de especies de Kielmeyera (Guttiferae) de cerrados de Brasilia, DF
This study deal with reproductive biology of two sympatric wood species of the genus Kielmeyera (Guttiferae), K. coriacea and K.speciosa. Pollination, dispersal and establishment of seedlings were studied to characterize the reproductive process and its adaptation to Cerrado vegetation conditions. The study was conducted from march, 1984 to January, 1985 in
Publicado em: 1986
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23. Natural Biodiversity Breaks Plant Yield Barriers
Public Library of Science.
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24. In Situ Transfer of Antibiotic Resistance Genes from Transgenic (Transplastomic) Tobacco Plants to Bacteria
Interkingdom gene transfer is limited by a combination of physical, biological, and genetic barriers. The results of greenhouse experiments involving transplastomic plants (genetically engineered chloroplast genomes) cocolonized by pathogenic and opportunistic soil bacteria demonstrated that these barriers could be eliminated. The Acinetobacter sp. strain BD
American Society for Microbiology.