Reactive Barrier
Mostrando 13-24 de 54 artigos, teses e dissertações.
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13. Estudos da deposição de filmes de diamante CVD sobre carbeto de tungstênio, com interface controlada de boreto / Studies of the deposition of diamond CVD films on tungsten carbide, boride with interface control
The objective of this work was to obtain adherent diamond films on WC-Co substrate through the hot filament assisted CVD technique, using a boriding process to form an intermediate layer and avoid the diffusion of the cobalt to the substrate surface. The boriding process consists of a reactive thermo diffusion treatment, in which boron atoms are spread in th
Publicado em: 2009
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14. Influence of ionizing radiation (60Co) on the physical-chemical, microbiological and sensory keeping quality characteristics of raw chiken thigh and chiken breast fillets packed in different packaging systems. / Influencia da radiação ionizante (60Co) na manutenção da qualidade fisico-quimica, microbiologica e sensorial de cortes de coxa e file de peito de frango acondicionado em deiferentes sistemas de embalagens.
Samples of raw chicken thigh and chicken breast fillets previously packed in different packaging systems [wrapped in high oxygen-permeable film (AIR), vacuum packed (VC) and CO2 and N2 modified-atmosphere-packed (MA)] were submitted to ionizing radiation delivered by a 60Co unit. A series of physical-chemical, microbiological and sensory parameters were eval
Publicado em: 2008
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15. Surfactantes reativos não-ionicos em polimerização em emulsão de latices de acetato de vinila - vinil neodecanoato : influencia nas propriedades de barreira a agua / Nonionic reactive surfactants in emulsion polymerization of vinyl acetate - viynil neodecanoate latices : influence on the water barrier properties
A indústria de tintas é uma grande consumidora de látex obtido pela técnica da polimerização em emulsão. Os surfactantes, essenciais à estabilidade do látex, exercem um papel fundamental na produção e na aplicação destes polímeros, pois agem de forma a estabilizar as gotas de monômero na forma de emulsão. Eles são necessários para a formaç
Publicado em: 2008
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16. Estudo clínico, radiográfico e microscópico dos efeitos do formocresol de Buckley diluído a 1/5, hidróxido de cálcio PA e agregado trióxido mineral (MTA) em pulpotomias de dentes decíduos humanos / Clinical, radiographic and microscopic study on 1:5 dilution of Buckleys formocresol, calcium hydroxide and trioxide mineral agregate a used for pulpotomies of human primary teeth
The aim of this study was to compare the clinical, radiographic and microscopic effectiveness of formocresol (FC), calcium hydroxide (CH) and trioxide mineral aggregate (MTA) as pulp dressing agents in carious primary teeth. Forty-five primary mandibular molars of 23 children between 5 and 9 years old were treated by conventional pulpotomy technique. The tee
Publicado em: 2008
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17. Retinol, proteÃnas transportadoras, carotenÃides, proteÃnas de fase aguda e barreira funcional intestinal em crianÃas de uma comunidade urbana de Fortaleza / Retinol, retinol binding proteins, carotenoids, acute fase proteins and intestinal barrier function in children from an urban community in Fortaleza
Vitamin A deficiency (VAD) is considered an important public health problem worldwide and the role of VAD on intestinal epithelial integrity is not well understood. To investigate the association of retinol (vitamin A) and carotenoids with the intestinal barrier function from children in an urban community in Fortaleza, Northeastern Brazil, one hundred and t
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 04/04/2007
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18. Analysis of gene expression induced for Phakopsora pachyrhizi in soybean / Análise da expressão gênica induzida por Phakopsora pachyrhizi em soja
Soybean Asian Rust, a disease caused by the fungi Phakopsora pachyrhizi, has caused serious economic damages to the Brazilian and world-wide soybean crop. The development of soybean lines resistant to this fungi has been a challenge, and currently the measures of control this disease are based on the handling of the crop and application of fungicides. With t
Publicado em: 2007
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19. Development and characterization of chitosan membranes for wound dressing and drug controlled release / Desenvolvimento e caracterização de membranas de quitosana para recobrimento de feridas e liberação controlada de farmacos
Skin wounds treatment (burns, ulcers, surgical and diabetes wounds) is a world-wide problem that has been widely argued and studied due to the healing process complications, such as infections, septicemia and death. The skin is the interface of the human organism with the external environment and when this barrier is wounded, microorganism infections, as wel
Publicado em: 2007
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20. Serum and cerebrospinal fluid S100B concentrations in patients with neurocysticercosis
The clinical manifestations of neurocysticercosis (NC) are varied and depend on the number and location of cysts, as well as on the host immune response. Symptoms usually occur in NC when cysticerci enter a degenerative course associated with an inflammatory response. The expression of brain damage markers may be expected to increase during this phase. S100B
Brazilian Journal of Medical and Biological Research. Publicado em: 2006-01
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21. Resolução do problema de fluxo de potência ótimo reativo via método da função lagrangiana barreira modificada / Resolution of reactive optimal power flow problem via method of Lagrangian modified barrier function
This work proposes an approach that uses an association of the methods of modified barrier and primal-dual interior points for the resolution of the reactive optimal power flow (OPF) problem. On this purpose, a bibliographical review was accomplished, which enlightened the optimization concepts applied to the static system of electrical energy and the method
Publicado em: 2006
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22. AvaliaÃÃo fÃsico-quÃmica da remediaÃÃo de solos contaminados por BTEX
This research had as objective to evaluate the efficiency of the reactive means in the removal of aromatical hydrocarbons BTEX (Benzene, Toluene, Etil Benzene and Xylenes) in the ground, coming of leak of gasoline, either in fuel stations or underground tanks, and to explain the physico-chemical mechanisms that occuring on the system. The experiment was carr
Publicado em: 2006
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23. Metodos de solução do fluxo de potencia otimo reativo e tratamento das restrições de desigualdade
The Reactive Optimal Power Flow (ROPF) is a computational optimization tool that dispatches all reactive power sources of an electrical power system. It is extremely important in power system planning, operation and voltage collapse simulation. Its mathematical modeling involves nonlinear nonconvex equality constraints and linear and nonlinear nonconvex ineq
Publicado em: 1999
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24. Bench-to-bedside review: Burn-induced cerebral inflammation – a neglected entity?
Severe burn injury remains a major burden on patients and healthcare systems. Following severe burns, the injured tissues mount a local inflammatory response aiming to restore homeostasis. With excessive burn load, the immune response becomes disproportionate and patients may develop an overshooting systemic inflammatory response, compromising multiple physi
BioMed Central.