The thermodynamic of the known and very effective catalytic system, hydrogen peroxide (H2O2) and methyltrioxorhenium (MTO) is studied in different solvents using UV-Visible spectroscopic method. The thermodynamic parameters (ΔG, ΔH and ΔS) for two equilibrium reactions, MTO + H2O2 ⇌ A + H2O and A + H2O2 ⇌ B.H2O (A, [MeRe(O)2(O2)]; B.H2O, [MeRe(OH2)(O)(O2)2]), are determined. The obtained free e...

—During November 2002, 51 shovelnose sturgeon Scaphirhynchus platorynchus were sexed by ultrasound imaging using a portable ultrasonograph. We identified males with 96% accuracy (N 5 25) and females with 80% accuracy (N 5 25); one hermaphroditic individual was misidentified as a male. Overall, ultrasound imaging was 86% accurate. Sex in postspawned females was difficult to determine, 60% being ...

A.D. Mus, State Institute for Coast and Sea, The Hague, The Netherlands, (email:[email protected]) P.H.A.J.M. van Gelder, Faculty of Civil Engineering and Geosciences, Delft University of Technology, The Netherlands (e-mail: [email protected]) A.O. Selivanov, Faculty of Geography, Moscow State University, Russia, ([email protected]) E.P.L. Elias, Faculty of Civil Engineering...

The thermodynamic of the known and very effective catalytic system, hydrogen peroxide (H2O2) and methyltrioxorhenium (MTO) is studied in different solvents using UV-Visible spectroscopic method. The thermodynamic parameters (ΔG, ΔH and ΔS) for two equilibrium reactions, MTO + H2O2 ⇌ A + H2O and A + H2O2 ⇌ B.H2O (A, [MeRe(O)2(O2)]; B.H2O, [MeRe(OH2)(O)(O2)2]), are determined. The obtained free e...

Modern satellite gravity missions and ground gravimetry provide operational data models that can be used in various studies geology, tectonics, climatology, etc. In the present study, sedimentary basins southern part of East European Platform adjoining areas including Caucasus are studied by employing approach based on decompensative anomalies. The new model sediments, implying their thickness ...