We have detected a broad Hα emission line in the polarized flux spectrum of the Seyfert 2 galaxy NGC 788, indicating that it contains an obscured Seyfert 1 nucleus. While such features have been observed in ∼ 15 other Seyfert 2s, this example is unusual because it has a higher fraction of galaxy starlight in its spectrum, a lower average measured polarization, and a significantly lower radio lu...

The technique of Quantitative Structure Property Relationships has been applied to the glass transition temperatures of polyarylethersulphones. A general equation is reported that calculates the glass transition temperatures with acceptable accuracy (correlation coefficients of between 90-67%, indicating an error of 10-30% with regard to experimentally determined values) for a series of 42 repo...

Internal cation mobility ratios in molten (Ca, Ba)Cl2 have been measured by the Klemm method for xBa (mole fraction of barium chloride) = 0.25 0.51 at 973 K and xBa = 0 0.61 at 1073 K. From these and available data on the densities and conductivities the internal cation mobilities b have been calculated, assuming additivity of the molar volume. Although bCa in pure CaCl2 is greater than bBa in ...

We present a novel formulation based on quantum Monte Carlo techniques for the treatment of volume polarization due to quantum mechanical penetration of the solute charge density in the solvent domain. The method allows to accurately solve Poisson's equation of the solvation model coupled with the Schrodinger equation for the solute. We demonstrate the performance of the approach on a represent...

The density of Ga203 liquid in equilibrium with air has been measured at 1800” to 1900°C using an Ir double-bob Archimedean method. The data yield the following description of the density of Gaz03 liquid: p = 4.8374(84)0.00065(12)(T -18S0°C). This density-temperature relationship is compared with the partial molar volume of GazO3 in glasses in the systems CaO-Ga203 -SiOz and Naz0-Ga2O3-SiO2, co...

With the Klemm method, ratios of internal mobilities in a ternary molten mixture (Li, Na, K)N0 3 of the eutectic composition (30-17-53 mol%) have been measured in the temperature range 473 K-673 K. The electric conductivity has been measured with a D. C. method. From these data the internal mobilities, bu, 6Na and bK, have been obtained on the assumption of additivity for the molar volume. In m...

The aim of this study was to identify various sulfidic mineralized zones in the Ghare-Tappeh Cu deposit (NW Iran) based on geo-electrical data including induced polarization (IP) and resistivity (RS) using the concentration-volume (C-V) and number-size (N-S) fractal models. The fractal models were used to separate high and moderate sulfidic zones from low sulfidic zones and barren wall rocks. B...