The fractionation of Ni isotopes during coprecipitation with calcite was measured at pH = 6.2 and pCO2 1 atm as a function growth rate. Light are preferentially incorporated into its coprecipitation, which is likely due to longer NiO bond length in compared that the aquo complex. extent isotope between solid aqueous fluid phase increases from ?0.3 ?0.9‰ rate slows 10?7.3 10?8..3 mol m?2 s?1. Th...

We describe a new technique for the synthesis of ultrahomogeneous nanoparticles of precursor oxalate powder by coprecipitation in the aqueous core of a water-in-oil microemulsion for the preparation of Bi-Pb-Sr-Ca-Cu-0 (2223) oxide superconductor. This process ensures a uniform mixing of metal cations down to a scale of at least 10 nm. This finely dispersed precursor powder results in phase pur...

Genetic transformation of murine bone marrow stem cells to methotrexate resistance was achieved using a modified calcium phosphate-DNA coprecipitation procedure. Bone marrow cells were transformed by DNA derived from methotrexate-resistant mouse 3T6 cells. In vivo selection of drug-resistant bone marrow cells resulted from thrice weekly injections of methotrexate (MTX) for a period of 6-8 wk. F...

Spectrometric techniques for the analysis of trace cadmium have developed rapidly due to the increasing need for accurate measurements at extremely low levels of this element in diverse matrices. This review covers separation and preconcentration procedures, such as electrochemical deposition, precipitation, coprecipitation, solid phase extraction, liquid-liquid extraction (LLE) and cloud point...

Nano size nickel copper ferrite powders (NiCuFe2O4) have been prepared by a prepared by Co precipitation method. The resulting powders were characterized by X-ray diffraction (XRD), Scanning electron microscope (SEM).The result showed nanosize nickel copper ferrite(35.65nm). The powders showed extensive XRD line broadening and sizes of crystals observed from the XRD line broadening was35.65 nm,...