Sulfate Free Radical
Mostrando 1-8 de 8 artigos, teses e dissertações.
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1. Synthesis and characterization of polystyrene - layered double hydroxide nanocomposites via in situ polymerization / Sintese e caracterização de nanocompositos de poliestireno - hidroxido duplo lamelar via polimerização in situ
Over the past decade, polymer nanocomposites have attracted considerable interests in both academia and industry. This fact has connection with notable improvement in several properties these new materials have demonstrated with a small amount of nano-reinforcements. Some superior properties of polymer nanocomposites include barrier resistance and flame reta
Publicado em: 2010
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2. Study of citotoxic effects and oxidative stress induced by cadmium chloride associated or not to zinc sulfate in skeletal muscle and neoplasic cells / Estudos dos efeitos citotoxicos e de estresse oxidativo induzido pelo cloreto de cadmio associado ou não ao sulfato de zinco em celulas musculares esqueleticas e neoplasicas
Metais pesados como o cádmio são considerados agentes tóxicos devido sua extensiva utilização nas indústrias e agropecuária e, como conseqüência, são amplamente dispersados no meio ambiente. No entanto, o cádmio tem sido foco, também, de inúmeras pesquisas relacionadas a exposição humana e suas conseqüências patológicas como o câncer. Estu
Publicado em: 2006
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3. The influence of soil characteristics in remediation of contaminated soils through advanced oxidation process with Sodium Persulfate and Fenton Reagent. / A influência das características dos solos na remediação de solos contaminados através de processos oxidativos avançados com persulfato e reagente de fenton
The remediation techniques used in contaminated soils such as "in situ" chemical oxidation aim essentially the mineralization of contaminants, reducing it to CO2 and H2O. The objective of this study is pointing out the results of experiments conducted to investigate how the soil characteristics such as granulometry, assay and nature of clay minerals as well
Publicado em: 2006
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4. The interaction of the free radical of 5-methylphenazinium methyl sulfate with the light-induced free radical of Rhodospirillum rubrum chromatophores.
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5. Dextran sulfate protects porcine but not bovine cultured endothelial cells from free radical injury
Previous studies demonstrated that the polyanion dextran sulfate (DS) protects rat coronary and porcine aortic endothelium (PAE) from oxygen-derived free radical (OFR) injury due to hydrogen peroxide (H2O2) or xanthine/xanthine oxidase (X/XO). To determine if DS has a similar protective effect in bovine aortic endothelium (BAE) and bovine brain microvascular
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6. Oxygen-mediated heterogeneity of apo-low-density lipoprotein.
Mild oxidation of human serum low-density lipoprotein (LDL) converts the apoprotein from a nearly homogeneous component of high apparent molecular weight to a mixture of apparently lower molecular weight polypeptide components, as characterized by sodium dodecyl sulfate/polyacrylamide gel electrophoresis. This protein alteration, which correlates temporally
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7. Bacterial iron enhances oxygen radical-mediated killing of Staphylococcus aureus by phagocytes.
It has been shown that increasing bacterial iron concentration enhances killing by hydrogen peroxide (H2O2) but not by polymorphonuclear granulocytes (PMN). It is possible that owing to the multiple bactericidal mechanisms of the PMN, differences in the killing rate of iron-loaded bacteria and control bacteria are obscured. We decided, therefore, to compare
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8. Oxidative cross-linking of immune complexes by human polymorphonuclear leukocytes.
Incubation of human serum albumin-anti-human serum albumin immune complexes bound to a plastic surface, with human polymorphonuclear leukocytes for 1 h at 37 degrees C resulted in covalent cross-linking of 8.5% +/- 0.5 of the complexes, corresponding to a minimum rate of 700 antibody molecules per cell per minute. Similar results were obtained with IgG-anti-