We have investigated the consequences of merging double white dwarf systems by calculating evolutionary models of accreting white dwarfs. We have considered two cases; a massive C-O white dwarf of∼ 1M⊙ accreting C-O mixture, and a low mass white dwarf with an initial mass of 0.4M⊙ accreting matter composed mostly of helium. The accretion rate of the C-O white dwarf is assumed to be 1 × 10M⊙y . ...

In the central nervous system, cystine import in exchange for glutamate through system xc- is critical for the production of the antioxidant glutathione by astrocytes, as well as the maintenance of extracellular glutamate. Therefore, regulation of system xc- activity affects multiple aspects of cellular physiology and may contribute to disease states. Pituitary adenylate cyclase-activating poly...

this work studies the biosurfactants production which enables the diesel biodegradation byusing mixed microbial consortia from polluted sites. it was carried out by culturing three microbial consortia(named as xa, xb and xc) obtained from polluted soils, and enriched in diesel as sole carbon source.batchexperiments were done to study the effects of three variables (temperature,hydrocarbon conce...

A new metal mold material for pulsed current sintering (PCS) methods at high temperatures with higher electrical resistivity than cemented carbide molds, was fabricated using mechanical milling and PCS. The constituent (100 1 x)(WC­10 or 30FeAl) + xC (x = 0­8; mass%) hard material with dispersed spherical carbon particles were synthesized via mechanical milling of the source powders and PCS. Th...

We propose an approach to approximate the exchange and correlation (XC) term in density functional theory. The XC potential is considered as an electrostatic potential, generated by a fictitious XC density, which is in turn a functional of the electronic density. We apply the approach to develop a correction scheme that fixes the asymptotic behavior of any approximated XC potential for finite s...

Herein, a straightforward electrochemical method was used to evaluate the total phenolic antioxidant capacity in natural extracts prepared from pomegranate, hibiscus, and pitaya. In light of this, well-known index (EI), screening protocol for properties evaluation, determined using differential pulse voltammetry. Initially considering rutin catechin as standards, we found that system’s sensitiv...

In this report, we investigate Conditional Random Fields (CRFs), a family of conditionally trained undirected graphical models. We give an overview of linear CRFs that correspond to chain-shaped models and show how the marginals, partition function and MAP-labelings can be computed. Then, we discuss various approaches for training such models ranging from the traditional method of maximizing th...