Optimization of bifunctional Ni catalysts was performed to enhance the catalytic performance in one-pot synthesis commercially valuable menthol from citral. The effect nickel precursors (nitrate, chloride, acetate, and sulfate) addition bentonite clay investigated citral transformations a batch reactor at 70 °C 10 bar hydrogen, demonstrating higher activity for Ni-H-β-38-bentonite composite der...

The stoichiometric nickel oxide is an insulator while it becomes a p-type semiconductor with the presence of divalent and trivalent states. Here nonstoichiometric nanoparticles (NiO${}_{x}$NPs) were synthesized via chemical route using two different starter salts; chloride hexahydrate nitrate hexahydrate. investigated by X-ray diffraction transmission electron microscopy, scanning to determine ...

BACKGROUND Although ambient fine particulate matter (PM(2.5); particulate matter ≤ 2.5 µm in aerodynamic diameter) has been linked to adverse human health effects, the chemical constituents that cause harm are unknown. To our knowledge, the health effects of PM(2.5) constituents have not been reported for a developing country. OBJECTIVES We examined the short-term association between PM(2.5) ...

The effect of various concentrations of divalent cations on survival of gonococci in liquid medium was studied. The growth of Neisseria gonorrhoeae was inhibited by manganous chloride in concentrations above 1 X 10(-5)mol/l while the growth of control organisms such as Neisseria meningitidis and Escherichia coli was not inhibited by the same salt even at 1 X 10(-2)mol/l. Copper sulphate, cobalt...