Dielectric properties of alkali halide and alkaline earth oxide crystals

The deviations of ionic charge and compressibility from their nominal values in alkali halides and alkaline earth oxide crystals have been discussed and explained in terms of a theory based on shell model and exchange charge interactions originally developed by Dick and Overhauser. The exchange charge polarization parameters have been evaluated in the present study using the appropriate values of overlap integrals. It has been concluded that the second neighbour short range forces have significnant magnitudes in alkaline earth oxides.     

Electromagnetic mass splittings of heavier hadrons in quantum chromodynamics

The electromagnetic mass splittings of heavier hadrons are estimated in the framework of gauge theory model where ligher quarks are taken to behave relativistically and the spatial wave functions are described by the spin-spin interaction affected relative distances between quarks. The predictions for (Ξ⁻-Ξ⁰), (Σ*⁰−Σ*⁺), (Ξ^*−-Ξ^*0), (D _c ⁺−D _c ⁰) and (D _c ^*+ −D _c ^*0 ) are in fair agreement with the experimental data available whereas those for (D _b ⁻ −D _b ⁰ ) and (D _b ^*− −D _b ^*0 ) are in qualitative agreement with other theoretical estimates.     

Second upper-bound on the three-phonon resistivity in Ge

Contributions of different allowed three-phonon resistances in Ge have been presented in the second upper-bound W^>₁. It is found that the deviation of W^>₁ from W^>₀, the first upper-bound, is markable. As a matter of fact W^>₁ is shown to be less than W^>₀ by about 14% at 100°K and about 5% at 300°K.     

Gel‐based separation of phosphoproteins in samples stored in urea/thiourea after precipitation by lanthanum chloride

The recent introduction of the La³⁺ precipitation method for the enrichment of phosphoproteins allows a gel‐based analysis of these posttranslationally modified proteins. However, if this method is applied to cell lysates stored in urea‐containing lysis buffer for an extended period of time, incomplete phosphoprotein recovery is observed. We ascribe this effect to the presence of urea in the lysis buffer. To overcome this problem various strategies were tested, where cell lysates stored at least for one year were utilized. By applying an optimized protocol approximately 250 proteins could be observed following separation by 2DE.     

Easy access to α-hydroxyimino-β-oxodithioesters and application towards the synthesis of diverse 1,4-thiazine-3-ones via reduction/annulation cascade

An operationally simple and facile synthesis of α-hydroxyimino-β-oxodithioesters has been achieved by nitrosation of α-enolicdithioesters. They were further treated with internal alkynes to afford diverse 1,4-thiazin-3-ones via domino reduction/annulation strategy under mild reaction conditions. Importantly, this is the first straightforward entry to highly functionalized 1,4-thiazin-3-one derivatives from simple starting materials.     

A sufficient condition for a monoid to be a group

I give a sufficient condition for Monoid (G,?) to become a group when one of its elements is deleated. The entire thing has been put in the form of a theorem with its proof and it has been discussed broadly.