This paper studies oxidation catalytic converters that were vehicle-aged in a diesel automobile. The deposition of several atoms (S, P, C, Si, Ca, Zn and Fe) was detected by several chemical analysis techniques. Moreover, AlPO4 and Al2(SO4)3 were identified by XRD. The catalytic performance of the aged catalysts with different mileages showed a similar degree of deactivation for CO and C3H6 oxi...

Zn-Cr layered double hydroxides (LDHs) intercalated with inorganic anions (CO3, Cl, SO4 and NO3) were synthesized by the co-precipitation method and the anion exchange process. The photocatalytic activity of the LDHs was studied by O2 evolution from aqueous solution of AgNO3 as a sacrificial agent. All the prepared LDHs showed photocatalytic activity under either UV and/or visible light irradia...

Although the induced synthesis of metallothionein (MT) after exposure to certain metals has been known for some time, there is little information on the quantitation of MT in various tissues. In this study, tissue MT concentrations were measured by a modified Cd-saturation method in tissues of adult male rats after injection of different metal salts. There were differences in tissue levels of M...

It is well established through field observations, experiments, and chemical models that oxidation (redox) state and pH exert a strong influence on the speciation of dissolved components and the solubility of minerals in hydrothermal fluids. log fO2–pH diagrams were used to depict the influence of oxygen fugacity and pH on monocarboxylateand dicarboxylate-transport of Pb and Zn in low-temperatu...

Mutant strains of the yeast Saccharomyces cerevisiae which lack functional Cu,Zn superoxide dismutase (SOD-1) do not grow aerobically unless supplemented with methionine. The molecular basis of this O2-dependent auxotrophy in one of the mutants, Dscd1-1C, has been investigated. Sulfate supported anaerobic but not aerobic mutant growth. On the other hand, cysteine and homocysteine supported aero...

Four trials were conducted using crossbred pigs (n = 308) to determine the effects of Zn acetate injection near weaning on serum Zn concentrations and performance. In Trial 1, 78 pigs (BW of 5.1 kg and age of 18 d) were injected i.m. 3 d before weaning with either 3 mg of Zn from Zn acetate (in saline) per kilogram of BW or saline. Serum Zn concentrations were higher (P < .05) for Zn-injected p...

The aromatic diamine 4-aminopyridine was used for the synthesis of a series supramolecular metal–organic sulfate salts. obtained compounds with formula (C5H7N2)2[MII(H2O)6](SO4)2 (MII = Fe, Co, Ni, Cu and Zn) (C5H7N2)2[Mn(H2O)4(SO4)2] crystallize triclinic symmetry (S.G. P $$\overline{1 }$$ ). These complexes possess hybrid structure type an interlayer distance that varies from 10 to 12 Å depen...

A field study was conducted to assess the agronomical performance of eggplant (Solanum melongena cv. Pusa Purple Long Hybrid-F1) grown in sewage sludge amended soil in rainy and summer seasons during two consecutive years 2012 and 2013. The results showed that sewage sludge significantly (P < 0.05/P < 0.01) increased the Organic Carbon (OC), sodium (Na + ), potassium (K + ), calcium (Ca 2+ ), m...

abstract tuberose is one of the most important cut flowers in iran and the world. in this experiment, effect of microelements fe, zn, cu and mn on inflorescence length, inflorescence bunch length, number and diameter of floret, diameter of inflorescence bunch and vase life of tuberose flowers were studied. this study was based on four separate completely randomized experimental design with four...