نتایج جستجو برای: xc

تعداد نتایج: 1429  

Journal: :Physical review 2023

We experimentally study how the magnetic correlations develop in a binary alloy close to ferromagnetic quantum critical point with small-angle neutron scattering (SANS). Upon alloying itinerant ferromagnet nickel vanadium, order is continuously suppressed. The temperature Tc vanishes when vanadium concentrations reach value of xc=0.116 indicating separating and paramagnetic phases. Earlier magn...

2014
Ernesto Vallejo

In this paper we improve a method of Robinson and Taulbee for computing Kronecker coefficients and show that for any partition ν of d there is a polynomial kν with rational coefficients in variables xC , where C runs over the set of isomorphism classes of connected skew diagrams of size at most d, such that for all partitions λ of n, the Kronecker coefficient g(λ, λ, (n − d, ν)) is obtained fro...

Journal: :Infection and immunity 2004
Jean-San Chia Ya-Lin Lin Huei-Ting Lien Jen-Yang Chen

Platelet aggregation plays an important role in the pathogenesis of infective endocarditis induced by viridans streptococci or staphylococci. Aggregation induced in vitro involves direct binding of bacteria to platelets through multiple surface components. Using platelet aggregometry, we demonstrated in this study that two Streptococcus mutans laboratory strains, GS-5 and Xc, and two clinical i...

Journal: :Cancer research 1978
S Gisselbrecht C Blaineau M A Hurot F Pozo J P Levy

The XC infectious center assay was used to study the nature of the lymphoid cells producing N-tropic C-type viruses in preleukemic AKR mice. Viral production by thymic cell suspensions was very low and was possibly due to contaminating cells. Production at least 100-fold higher was found in spleen cells and was probably due to non-T-cells. The significance of these results is discussed briefly,...

2017
Chen Pengliang Ling Fengsheng Ha Siyao Lai Wenjie Li Fei

Xanthogranulomatous cystitis (XC) is a chronic granulomatous inflammation with rare incidence. Herein, we report a 62-year-old female whose cystoscopic biopsy showed chronic inflammation accompanied with acute episode of inflammation. According to CT scan, pathology of the lesion could not rule out bladder carcinoma. Thus, partial cystectomy was done. But post-operatory pathological examination...

2009
V. Turkowski A. Leonardo C. A. Ullrich

Optical processes in insulators and semiconductors, including excitonic effects, can be described in principle exactly using time-dependent density-functional theory TDDFT . Starting from a linearization of the TDDFT semiconductor Bloch equations in a two-band model, we derive a simple formalism for calculating exciton binding energies. This formalism leads to a generalization of the standard W...

2004
Primož Potočnik Mateja Šajna

A graph X is called almost self-complementary with respect to a perfect matching I in the complement Xc if it is isomorphic to the graph obtained from Xc by removing the edges of I. In this paper we investigate the relationship between self-complementary two-graphs and double covers over complete graphs that are almost self-complementary with respect to their set of fibres. In particular, we cl...

Journal: :Physical review letters 2002
Lucia Reining Valerio Olevano Angel Rubio Giovanni Onida

Starting from the many-body Bethe-Salpeter equation we derive an exchange-correlation kernel f(xc) that reproduces excitonic effects in bulk materials within time-dependent density functional theory. The resulting f(xc) accounts for both self-energy corrections and the electron-hole interaction. It is static, nonlocal, and has a long-range Coulomb tail. Taking the example of bulk silicon, we sh...

Journal: :Physical review letters 2013
S Kurth G Stefanucci

For molecules weakly coupled to leads the exact linear Kohn-Sham (KS) conductance can be orders of magnitude larger than the true linear conductance due to the lack of dynamical exchange-correlation (xc) corrections. In this work we show how to incorporate dynamical effects in KS transport calculations. The only quantity needed is the static xc potential in the molecular junction. Our scheme pr...

Journal: :Plant & cell physiology 2006
Johann Lavaud Peter G Kroth

In diatoms, the non-photochemical fluorescence quenching (NPQ) regulates photosynthesis during light fluctuations. NPQ is associated with an enzymatic xanthophyll cycle (XC) which is controlled by the light-driven transthylakoid proton gradient (delta pH). In this report, special illumination conditions and chemicals were used to perturb the kinetics of the delta pH build-up, of the XC and of N...

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