The aim of this research is to calculate the elastic constants and Bulk modulus of Cu-20 wt% Ni random Nanoalloy. The molecular dynamics simulation technique was used to calculate the mechanical properties in NPT ensemble. The interaction between atoms as well as cohesive energy in the Nanoalloy modeled systems was calculated by Morse et al. two body potential. Also the temperature of the syste...

To solve the main problems of existing coarse grained copper (CG Cu) intrauterine devices (IUD)-namely burst release and a low transfer efficiency of the cupric ions during usage-ultra-fine grained copper (UFG Cu) and single crystal copper (SC Cu) have been investigated as potential substitutes. Their corrosion properties with CG Cu as a control have been studied in simulated uterine fluid (SUF...

The sulphhydryl environment in various mixed-metal hybrid hemoglobins, viz. α2(Cu)β2(FeCO), α2(FeCO)-β2(Cu), α2(Cu)-β2(Ni), α2(Ni)-β2(Cu), was studied by reacting them with the sulphhydryl reagent, 4,4′-dithiodipyridine (4-PDS). The reactivity was compared with that of HbCO, NiHb and CuHb. It is found that there exists a correlation between conformational change and metal ion environment, not o...

Zinc (Zn), Copper (Cu) were measured in children suffering from Marasmic-Kwashiorkor with various infections. On admission to hospital Zn level was low in all patients (39.6 = 15.9 ug 88.7 = 16.8 ug %). On nutritional rehabilitation without any Zn supplementation, Zn level showed improvement but in one group, who had initially very low level, subjects were still Zn deficient. Cu level was found...

Submonolayer to monolayer coverages ofCu electrodeposited and vacuum-deposited onto a well-characterized Pt ( 11 I ) surface were studied in both ultrahigh vacuum (UHV) and electrochemical environments using a combined UHV-electrochemical apparatus. Substantial discrepancy was observed between the voltammetrically measured Faradaic charge and the theoretically expected value based on UHV determ...

Speciation of copper in the channels of MCM-41 during reduction of NO with CO at 473-773 K was studied by in situ extended X-ray absorption fine structural (EXAFS) and X-ray absorption near edge structural (XANES) spectroscopies in the present work. The component fitted (in situ) XANES spectra of the catalyst showed that about 72% of metallic copper (Cu(0)) in MCM-41 was oxidized to higher oxid...