نتایج جستجو برای: xc

تعداد نتایج: 1429  

Palladium nanoparticles supported on carbon black powder (Vulcan XC-72) nanocomposite (Pd/C) are synthesized as the catalyst for the anodic oxidation of glucose for use in a direct glucose alkaline fuel cell (DGAFC). Characterization of the catalyst is carried out using physical and electrochemical methods. It is observed that Palladium nanoparticles are uniformly dispersed onto the carbon blac...

2017
Lina Fu Qingqing Zhu Yinya Sun Wei Du Zhiyong Pan Shu’ang Peng

Iron is an essential micronutrient for plants, and plants have evolved adaptive mechanisms to improve iron acquisition from soils. Grafting on iron deficiency-tolerant rootstock is an effective strategy to prevent iron deficiency-chlorosis in fruit-tree crops. To determine the mechanisms underlying iron uptake in iron deficiency, two iron deficiency-tolerant citrus rootstocks, Zhique (ZQ) and X...

Journal: :Physical review letters 2003
Francesco Sottile Valerio Olevano Lucia Reining

We have established and implemented a fully ab initio method which allows one to calculate optical absorption spectra, including excitonic effects, without solving the cumbersome Bethe-Salpeter equation, but obtaining results of the same precision. This breakthrough has been achieved in the framework of time-dependent density-functional theory, using new exchange-correlation kernels f(xc) that ...

Journal: :Journal of dairy science 2013
M E Thomas J L Foster K C McCuistion L A Redmon R W Jessup

Fibrolytic enzymes and microbial inoculants have the potential to improve the value of sorghum feedstuff and feedstock. An experiment was conducted to determine nutritive value, ensiling characteristics, and in situ disappearance kinetics of 4 sorghum (Sorghum bicolor L.) silage varieties: Dairy Master BMR (DBMR; brown midrib; Richardson Seed, Vega, TX), PS 747 (PS; photoperiod sensitive; Pogue...

Journal: :Physical review letters 1995
Vignale

It is shown that the exchange-correlation part of the action functional A xc [ρ(r, t)] in time-dependent density functional theory , where ρ(r, t) is the time-dependent density, is invariant under the transformation to an accelerated frame of reference ρ(r, t) → ρ ′ (r, t) = ρ(r + x(t), t), where x(t) is an arbitrary function of time. This invariance implies that the exchange-correlation potent...

2015
Ajit G. Thomas Rita Sattler Karen Tendyke Kara A. Loiacono Hans Hansen Vishal Sahni Yutaka Hashizume Camilo Rojas Barbara S. Slusher Hendrik W. van Veen

The cystine-glutamate antiporter (system xc-) is a Na+-independent amino acid transporter that exchanges extracellular cystine for intracellular glutamate. It is thought to play a critical role in cellular redox processes through regulation of intracellular glutathione synthesis via cystine uptake. In gliomas, system xc- expression is universally up-regulated while that of glutamate transporter...

Journal: :Physical review. E 2016
Valentin V Karasiev Lázaro Calderín S B Trickey

The effects of an explicit temperature dependence in the exchange correlation (XC) free-energy functional upon calculated properties of matter in the warm dense regime are investigated. The comparison is between the Karasiev-Sjostrom-Dufty-Trickey (KSDT) finite-temperature local-density approximation (TLDA) XC functional [Karasiev et al., Phys. Rev. Lett. 112, 076403 (2014)PRLTAO0031-900710.110...

2009
WONHO KIM CHRIS PARK

(1) p(x) = ∏ C ΨC(xC) ∏ S ΦS(xS) where ΨC(xC ) is the potential for a clique C , and ΦS(xS) is the potential for a separator S. After Junction Tree algorithm, the clique potential ΨC(xC) becomes the marginal probability for clique C . Thus, we are able to achieve a representation that is a product of marginals, and yet is also a representation of the joint probability. After we initialize maxim...

Journal: :Water environment research : a research publication of the Water Environment Federation 2017
Bahman Banihashemi

Nine lab-scale continuous flow porous-pot bioreactors operating at various solids retention times and hydraulic retention times were conducted to simulate activated sludge (AS) systems and to evaluate the biodegradation kinetic models for the fate of 17α-ethinylestradiol (EE2), bisphenol-A (BPA), and triclosan (TCS) at the µg/L range. Mathematical models were applied to describe the degradation...

2017
Manuel Aprile Yuri Faenza Samuel Fiorini Tony Huynh Marco Macchia

The extension complexity xc(P ) of a polytope P is the minimum number of facets of a polytope that affinely projects to P . Let G be a bipartite graph with n vertices, m edges, and no isolated vertices. Let STAB(G) be the convex hull of the stable sets of G. Since G is perfect, it is easy to see that n 6 xc(STAB(G)) 6 n+m. We improve both of these bounds. For the upper bound, we show that xc(ST...

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