Sodium Chromate
Mostrando 1-8 de 8 artigos, teses e dissertações.
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1. Recuperação do cromo contido nas cinzas provenientes da incineração de resíduos sólidos das indústrias coureira e calçadista visando a obtenção de cromato de sódio (VI)
O processo de transformação da pele em couro envolve uma seqüência complexa de reações químicas e processos mecânicos, no qual o curtimento representa fundamental estágio, por propiciar à pele características como qualidade, estabilidade hidrotérmica e excelentes propriedades para uso. O sulfato básico de cromo trivalente é o agente curtente pr
Publicado em: 2007
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2. Obtenção de filmes passivantes de molibdato de amonio e nitrato de cerio para ligas de zinco eletrodepositadas / The attainment of passivating films of ammonium molybdate and cerium nitrate for alloys of zinc electrodeposits
The electroplated zinc alloy coatings present better corrosion resistance than pure zinc, but they need a posterior passive treatment aiming the reduction of the formation of white corrosion products. Chromate conversion process is the process that, until now, presents the best results as passive treatment for zinc alloy coatings, although it presents high t
Publicado em: 2005
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3. Studies on Chromated Erythrocytes. Effect of Sodium Chromate on Erythrocyte Glutathione Reductase*
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4. THE SIMULTANEOUS DETERMINATION OF RED CELL MASS AND PLASMA VOLUME IN MAN WITH RADIOACTIVE SODIUM CHROMATE AND CHROMIC CHLORIDE 1
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5. Toxicity and Mutagenicity of Hexavalent Chromium on Salmonella typhimurium
Four hexavalent and two trivalent chromium compounds were tested for toxicity and mutagenicity by means of the Salmonella typhimurium/mammalian-microsome test. All hexavalent compounds yielded a complete inhibition of bacterial growth at doses of 400 to 800 μg/plate, a significant increase of his+ revertant colonies at doses ranging from 10 to 200 μg, and
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6. Effect of oxygen radical scavengers on K-cell cytolysis.
We have shown that the hydroxyl radical scavengers sodium benzoate, phenol, dimethyl sulfoxide, sodium formate, and mannitol protect chicken erythrocyte (Ec) target cells from lysis by K-cells in plaque assays. The protection afforded by benzoate, phenol, mannitol, and dimethyl sulfoxide was abrogated if the target cells were pretreated with sodium chromate.
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7. Effect of kidney damage on the mobilisation of mercury by thiol-complexing agents
ABSTRACT Mobilisation of mercury by thiol-complexing agents is the accepted treatment for chronic mercury intoxication. The success of such treatment is judged by the urinary excretion of mercury which might be modified by existing kidney damage caused either by the mercury itself or by other factors. In the present work the ability of three thiol-complexing
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8. Platelet Kinetics in Canine Ehrlichiosis: Evidence for Increased Platelet Destruction as the Cause of Thrombocytopenia
A significant (P < 0.025) increase in the mean platelet diameter occurred in five Ehrlichia canis-infected dogs when platelet numbers decreased to 100,000/μl or less. Maximal incorporation of [75Se]selenomethionine into platelets of six uninfected dogs was 0.080 ± 0.019% (mean ± standard error) and occurred 5 to 6 days after dosage, whereas maximal incorp