The complexation reactions between methylthymol blue (MTB) and Co2+, Ni2+, Cu2+, Zn2+ and Pb2+ ions have been studied in different water-methanol mixtures at pH 4.45 and 25 °C by a spectrophotometric technique. The stepwise stability constants of the resulting 1:1 and 2:1 (metal ion to ligand) complexes were determined from the absorban...

Argonne National Laboratory (ANL), along with other national laboratories, has been developing a solvent extraction process for partitioning of spent fuel constituents to lead to safer and cheaper disposal of high-level waste. The process, known as UREX+, separates key radionuclides from dissolved spent fuel into: (1) uranium for disposal as LLW, (2) technetium for disposal as HLW, (3) iodine f...

cottonseed is considered among most important crops. it contains about 26 percent oil that ‎in used for vegetable oil production. after oil extraction, the remaining part of the seed know as ‎cottonseed cake with 45 percent protein is routinely used as a protein supplement in feed ‎rations for livestock and less for food use due to presence of gossypol, a toxic constituent of ‎cottonseed.‎ in t...

Abstract—The objectives of this research are to produce prototype coconut oil based solvent offset printing inks and to analyze a basic quality of printing work derived from coconut oil based solvent offset printing inks, by mean of bringing coconut oil for producing varnish and bringing such varnish to produce black offset printing inks. Then, analysis of qualities i.e. CIELAB value, density v...

The kinetics of dissolution of dispersions of egg phosphatidylcholine (lecithin) by bile salts was studied by observing the decrease in turbidity as mixed micelles of lecithin and bile salt were formed. The rate of dissolution of lecithin corresponding to the formation of mixed micelles was studied in the presence of dihydroxy bile salts, sodium deoxycholate, sodium chenodeoxycholate, sodium ur...

Enthalpies of solution of electrolytes as well as nonelectrolytes in several pure and mixed solvents are discussed. The resulting enthalpies of transfer from one solvent to another in solvent systems containing water show the influence of hydrophobic hydration for solutes containing alkyl groups, viz. tetraalkylammonium bromides, alkanols and substituted ureas. Enthalpies of dilution give infor...

Cytoplasmic osmolytes can significantly alter the thermodynamic and kinetic properties of proteins relative to those under dilute solution conditions. Spectroscopic experiments of lysozymes in cosolvents indicate that such changes may arise from the heterogeneous, site-specific hydrophobic interactions between protein surface residues and individual solvent molecules. In pursuit of an accurate ...