Physic Chemical
Mostrando 13-24 de 60 artigos, teses e dissertações.
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13. Tintas anti-incrustantes de terceira geração: novos biocidas no ambiente aquático
Antifouling agents have been used on vessels and boats since ancient civilizations. Thus, a brief history on the three generations of antifouling paints was provided in the present review. Additionally, information about physic-chemical properties, environmental levels, toxicology and analytical methods was discussed for the 16 "new" booster biocides used as
Química Nova. Publicado em: 2011
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14. Tratamento de água para consumo humano de reservatório eutrofizado através de pré e interoxidação, adsorção em carvão ativado e dupla filtração / Drinking water treatment of eutrophic reservoir by pre and interoxidation, activated carbon adsorption and double filtration
Disordered basins occupation provoked acceleration of eutrophication, which besides purely aesthetic and landscaping problems, results in occurrence of high phytoplankton densities with potentially toxic cyanobacteria dominance. Alongside physical aging and consequent deterioration of installations, usual treatment technologies do not provide adequate condit
Publicado em: 2011
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15. Componentes de la variabilidad espacial en el manejo por sitio específico en banano
The objective of this work was to evaluate the spatial variability of banana production, in function of physical and chemical variables of soil and of farm physiographic characteristics, in order to select those with the greatest potential for use in site-specific management program. One hundred thirty productive units of banana clone Williams (Cavendish AAA
Pesquisa Agropecuária Brasileira. Publicado em: 2010-08
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16. Efeito de diferentes épocas de desfolha e de colheita na composição do vinho cabernet sawvignon / Effect of different defoliation and harvesting times in the composition of cabernet sauvignon wine
O trabalho foi realizado em Santana do Livramento. Rio Grande do Sul, com o objetivo de avaliar o efeito de épocas de desfolha e de colheita sobre a composição físico-química do vinho Cabernet Sauvignon. O experimento foi conduzido num fatoriat incompleto, com quatro épocas de desfolha e três épocas de colheita, realizadas em função de uma data ide
Publicado em: 2010
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17. Efeito da inclusão de leite em pó e açúcar sobre a viabilidade de bactérias probióticas em leite fermentado desnatado / Effect of milk powder and sugar inclusion on the viability of probiotic bacteria in fermented skim milk
The aim of this study was to evaluate the effect of skimmed milk powder and sugar inclusion on the viability of probiotic microorganisms and on the quality of skimmed fermented milk. Eight different treatments were prepared: 1. Skimmed and standardized milk (SM) at 0,2% of fat (SM 0,2%F); 2. SM 0,2%F + 5% of milk powder (MP); 3. SM 0,2%F + 10% MP; 4.SM 0,2%F
Publicado em: 2010
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18. Diagnóstico ecotoxicológico dos efluentes lançados no complexo estuarino do Jundiaí/Potengi, Natal/RN
Untreated effluents that reach surface water affect the aquatic life and humans. This study aimed to evaluate the wastewaters toxicity (municipal, industrial and shrimp pond effluents) released in the Estuarine Complex of Jundiaí- Potengi, Natal/RN, through chronic quantitative e qualitative toxicity tests using the test organism Mysidopsis Juniae, CRUSTACE
Publicado em: 2010
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19. Produção de agua de coco (cocus nucifera) utilizando membranas de micro e ultrafiltração de celulose, PES e PVDF / Coconut water processing using micro and ultrafiltration membranes of cellulose, PES and PVDF
Coconut water is a natural drink. Lately, its consumption has been growing in both natural form and processed form, because of the coconut water health benefits. Processing methods are used, essentially, to inhibit the enzymes actions (polyphenoloxidase and peroxidase) that are responsible for coconut water color chage to rose and ensure its microbiological
Publicado em: 2010
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20. Calibration and management of porous cap soil solution samplers and pressure transducers for monitoring fertigation ions / Calibração e manejo de extratores providos de cápsulas porosas e transdutores de pressão para monitoramento de íons na fertirrigação
The fertigation management with ion concentration control in the soil solution its an alternative technique and feasible economic, however its necessary to calibrate it to be effectively recommended. This work had the aim to determine calibrated equations to monitor the electrical conductivity (EC) and the solution ion concentration in soils of two different
Publicado em: 2010
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21. Espumantes de maçã obtidos pelos processos ASTI, Charmat e Champenoise / Espumantes de maçã obtidos pelos processos ASTI, Charmat e Champenoise
The use of musts made with apples discarded during classification to in natura trade and the artificial gasification of the fermented, undertake the quality of Brazilian cider. The fermentation process used results in carbon dioxide loss and, consequently, aromatics compounds with large importance to the sensorial attributes of the fermented as well. The pro
Publicado em: 2009
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22. Contagem de células somáticas e bacteriana total, sequenciamento dos exons 1 e 2 do gene Mannose-binding Lectin (MBL) em caprinos de rebanhos pernambucanos
Mastitis is the inflammatory process of mammary gland which has infectious origin or not. It is characterized by physic-chemical and bacteriological alterations of milk and unrepairable lesions on the mammary tissue. In goats used for milk production, mastitis is a serious problem, as much for increasing production costs as for public health risks. In this w
Publicado em: 2009
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23. Erosão laminar, atributos físico-químicos do solo e estrutura trófica da nematofauna em áreas do Reservatório da Usina Hidrelétrica Luiz Gonzaga
Naturally occurring erosion or in association with anthrop action (mainly) is a serious environmental problem, particularly in reservoir, because environmental degradation generate by erosive process is a risk for water availability, electric power generation, water supply and navigation. The present study aimed to characterize and correlate physical and che
Publicado em: 2009
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24. Expression analysis of a set of genes related to the ripening of bananas and mangoes
During ripening many important physic-chemical changes contribute to fruit quality, and they are precisely determined by gene expression. Specific genes are essential to normal ripening; however, information on gene expression about the majority of tropical fruit, such as bananas and mangoes is limited. In this way, the present study was undertaken with the
Brazilian Journal of Plant Physiology. Publicado em: 2009