sediments are generally regarded as the sink for dissolved elements carried out to the sea by rivers. in order to study the source and mechanism of metal transport in sea water, 123 surface sediment samples were taken by using grab sampler in the northwest part of the persian gulf in summer. grain size analysis and geochemical analysis by icp-oes were carried out on samples after sample prepara...

CdTe solar cells were fabricated with five different concentrations of copper, including zero, used in backcontact formation. Room-temperature J-V curves showed progressive deterioration in fill factor with reduced copper. JSC and QE were similar for all Cu-levels. Capacitance measurement suggested enhanced intermixing at the back contact with copper present. Photocurrent mapping was much less ...

The paper demonstrates the potential of wet ball milling metals for synthesis various carbides and carbohydrides. work reports on multicomponent formed in Ti-(Cu/Fe/Si)-C, W-Fe-C, Nb-(Cu/Fe/Si/Al)-C systems, as well metastable or high-temperature intermetallics Ti-Si, Nb-Si, Nb-Al, Nb-Cu-Fe which are stabilized with interstitial carbon. formation phase composition powders fabricated under mecha...

in order to assess the potential of copper mineralization and its associated elements in soltan meydan basaltic formation situated in the north of shahrud, the method of stream sediment and heavy mineral has been used. to achieve this aim, totally 68 samples of sediments (-80 mesh in particle size) and 6 samples of heavy minerals (-20 mesh in particle size) have been collected in an optimized n...

Qu ua al li it ty y A As ss su ur ra an nc ce e i in n T Te er rt ti ia ar ry y E Ed du uc ca at ti io on n: : C Cu ur rr re en nt t P Pr ra ac ct ti ic ce es s i in n O OE EC CD D C Co ou un nt tr ri ie es s a an nd d a a L Li it te er ra at tu ur re e R Re ev vi ie ew w o on n P Po ot te en nt ti ia al l E Ef ff fe ec ct ts s The opinions expressed in this paper are the sole responsibility of...