We construct biharmonic real hypersurfaces and Lagrangian submanifolds of Clifford torus type in CPn via the Hopf fibration; and get new examples of biharmonic submanifolds in S as byproducts .

background: natural organic compounds are known as precursors in the formation of disinfection byproducts. the aim of this study was to evaluate of effect of modified cationic surfactant nano zeolite in the removal of humic acid (ha) from water. materials and methods: nano zeolite (clinoptilolite) was modified by cationic surfactant solution hexadecyltrimethylammonium bromide (hdtma-br), in dos...

This personal account summarizes our recent developments in gold-catalyzed direct substitutions on propargylic (allylic, benzylic) alcohols, with various nucleophiles (and bi-nucleophiles) based on the σ- and/or π-acidity of gold(III) complexes. Synthetic developments are also briefly described.

Direct allylic etherification of unactivated alcohols occurs regio- and stereoselectively under mild, gold(I)-catalysed conditions.

By 1961 the situation had become reversed. The fibre consumption of the highest income groups relative to that of the lowest increased steadily during this period. When compared to the lowest two social classes the highest two with the higher overall fibre intake emerged with a lower incidence ofCHD over the twenty years.73 Finally, in a prospective secondary prevention study, Daan Kromhout and...