Eight commercially available organic Zn products and reagent-grade ZnSO4 x 7H2O (Zn Sulf) were evaluated by polarographic analysis, and solubility in .1 M K2HPO4-KH2PO4 buffer (pH 5), .2 M HCl-KCl buffer (pH 2), and deionized water. Fractions from these solubility tests were evaluated by gel filtration chromatography for structural integrity. Degree of chelation was generally positively related...

Plate bending fatigue tests were conducted for the Mg-9mass%Al-1mass%Zn-2mass%Ca alloy joints prepared by friction stir welding under two different conditions of stress ratio 0 and -1. The limit FSW was above 80% that base metal all test conditions. Fracture origin observed at thermo-mechanically affected zone (TMAZ) in joints. higher than inert gas (MIG) tungsten (TIG) fused (FZ) both MIG join...

geometrically nonlinear governing equations for a plate with linear viscoelastic material are derived. the material model is of boltzmann superposi¬tion principle type. a third-order displacement field is used to model the shear deformation effects. for the solution of the nonlinear governing equations the dynamic relaxation (dr) iterative method together with the finite difference discretizati...

RESEARCH ARTICLE Relationships of Zn Between Centella Asiatica and Geochemical Fractions of the Habitat Topsoils: Implications of Biomonitoring of Zn Chee K. Yap, Hishamuddin Omar, Rosimah Nulit, Ghim H. Ong, Alireza R. Bakhtiari, Ali Karami and Salman A. Al-Shami Department of Biology, Faculty of Science, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia. Inti International Univ...

We propose an aqueous rechargeable Zn-Cu Daniell-type battery. In this system, Li(+) prefers to conduct currents rather than react with the electrodes, while the Zn-Cu electrode couples engage in their electrochemical reactions free from conducting currents. Here Li(+) performs like a messenger and thus could be called the electrochemical messenger.

We discuss the structure of the effective Lagrangian for the (2,2) ZN orbifolds and the corresponding Calabi-Yau manifolds which are obtained by “blowing-up” the orbifold singularities. The method to “blow-up” such singularities is reviewed.’ Results are exact at the string tree-level. In particular the question of generating an intermediate scale MI in such models is addressed. It is shown tha...

electrochemical properties of various rock-shaped-cuo/graphite (g) composites and monoclinic structure cuo nanoparticles as the cathode versus a zinc plate as the anode in a 4m naoh electrolyte were elucidated by electrochemical impedance spectroscopy (eis) and chronopotentiometry (cp) in a two electrode configuration cell. various values of g 9, 16 and 28 wt% were prepared and studied as catho...