Ebd
Mostrando 13-24 de 27 artigos, teses e dissertações.
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13. Caracterização de filmes finos de óxido de silício depositados em um reator HD-PECVD a partir de TEOS a ultra baixa temperatura. / Characterization of silicon dioxide thin films deposited in a HD-PECVD reactor from TEOS at ultra low temperature.
This work reports on the results obtained from high-density plasma enhanced chemical vapor deposited silicon oxide films at ultra low temperature, i.e. 30°C, using TEOS vapor as the silicon source oxidized with assistance of argon. The objectives of this work are: first, understand the phenomena that conducts the chemical vapor deposition in high density re
Publicado em: 2007
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14. Estudo de camadas dielétricas para aplicação em capacitores MOS. / Study of dielectric layers for MOS capacitors.
Silicon oxynitride films obtained by the PECVD technique from N2O+SiH4+He gaseous mixtures, at 320°C, with different deposition pressure and RF power were studied intending to improve the interface quality with Si, decreasing the effective charge density and the interface state density in order to utilize them in MOS semiconductor devices. The results showe
Publicado em: 2007
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15. Pharmacological activity from extracts obtained of lumber residue / Atividade farmacologica de extratos obtidos a partir de residuos madereiros
The knowledge about the use of medicinal plants is, innumerable times, the only therapeutic resource for several communities; and to search new bioactive compounds from Brazilian biodiversity is one strategy with positive economic and social consequences. Additionally, part of the tropical forest is explored for lumber and wood based products, generating ann
Publicado em: 2005
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16. Atividade antitumoral, isolamento e identificação dos principios ativos da Gaylussacia brasiliensis (Spreng.) Meisn. (Ericaceae)
Gaylussacia brasiliensis (Spreng.) Meisn. (Ericaceae), popularmente conhecida corno "camarinha", é usada na medicina popular brasileira no tratamento de processos inflamatórios. Os objetivos deste trabalho foram: (1) avaliar a atividade antitumoral de extratos brutos obtidos desta espécie vegetal em modelo "in vitro" de cultura de células tumorais humana
Publicado em: 2004
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17. Contribuição ao estudo imunoquimico das formas de cultivo do Trypanosoma Cruzi
Os lisados das formas de cultivo de T. cruzi contêm um material insolúvel, contendo proteínas, polissacárides e lípides. Este material é capaz de absorver anticorpos aglutinantes das forma de cultivo do T. cruzi. Os lípedes extraídos dos sedimentos insolúveis floculam e fixam complemento com imune-soros anti T. cruzi. O sedimento delipidado contém
Publicado em: 1973
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18. Trafficking of Phosphatidylinositol 3-Phosphate from the trans-Golgi Network to the Lumen of the Central Vacuole in Plant Cells
Very limited information is available on the role of phosphatidylinositol 3-phosphate (PI[3]P) in vesicle trafficking in plant cells. To investigate the role of PI(3)P during the vesicle trafficking in plant cells, we exploited the PI(3)P-specific binding property of the endosome binding domain (EBD) (amino acids 1257 to 1411) of human early endosome antigen
American Society of Plant Physiologists.
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19. Enteric β-Defensin: Molecular Cloning and Characterization of a Gene with Inducible Intestinal Epithelial Cell Expression Associated with Cryptosporidium parvum Infection
A growing body of evidence suggests that endogenous antibiotics contribute to the innate defense of mammalian mucosal surfaces. In the cow, β-defensins constitute a large family of antibiotic peptides whose members have been previously isolated from the respiratory and oral mucosa, as well as circulating phagocytic cells. A novel bovine genomic clone with s
American Society for Microbiology.
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20. Genetic and Molecular Organization of the Alkylbenzene Catabolism Operon in the Psychrotrophic Strain Pseudomonas putida 01G3
The 11-kb sequence encompassing the alkylbenzene upper pathway in Pseudomonas putida 01G3, a psychrotrophic strain able to degrade alkylbenzenes at low temperatures, was characterized. Together with a potential regulator (EbdR), six putative enzymes (EbdAaAbAcAdBC) were identified, and they exhibited highly significant similarities with enzymes implicated in
American Society for Microbiology.
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21. Genomic Responses from the Estrogen-responsive Element-dependent Signaling Pathway Mediated by Estrogen Receptor α Are Required to Elicit Cellular Alterations*S⃞
Estrogen (E2) signaling is conveyed by the transcription factors estrogen receptor (ER) α and β. ERs modulate the expression of genes involved in cellular proliferation, motility, and death. The regulation of transcription by E2-ERα through binding to estrogen-responsive elements (EREs) in DNA constitutes the ERE-dependent signaling pathway. E2-ERα
American Society for Biochemistry and Molecular Biology.
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22. Isolation and Characterization of Anaerobic Ethylbenzene Dehydrogenase, a Novel Mo-Fe-S Enzyme
The first step in anaerobic ethylbenzene mineralization in denitrifying Azoarcus sp. strain EB1 is the oxidation of ethylbenzene to (S)-(−)-1-phenylethanol. Ethylbenzene dehydrogenase, which catalyzes this reaction, is a unique enzyme in that it mediates the stereoselective hydroxylation of an aromatic hydrocarbon in the absence of molecular oxygen. We pur
American Society for Microbiology.
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23. Substrate-Dependent Regulation of Anaerobic Degradation Pathways for Toluene and Ethylbenzene in a Denitrifying Bacterium, Strain EbN1
Anaerobic biodegradation of toluene and ethylbenzene is of environmental concern and biochemical interest due to toxicity and novel reactions, respectively. The denitrifying strain EbN1 is unique in anaerobically degrading both alkylbenzenes via different pathways which converge at benzoyl coenzyme A. The organization of genes involved in both pathways was o
American Society for Microbiology.
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24. Activated protein C protects against ventilator-induced pulmonary capillary leak
The coagulation system is central to the pathophysiology of acute lung injury. We have previously demonstrated that the anticoagulant activated protein C (APC) prevents increased endothelial permeability in response to edemagenic agonists in endothelial cells and that this protection is dependent on the endothelial protein C receptor (EPCR). We currently inv
American Physiological Society.