نتایج جستجو برای: electric structure

تعداد نتایج: 1690027  

2001
D. Budker V. V. Yashchuk

Optical pumping of an atomic sample with narrow-band light can create sub-Doppler features, known as Bennett structures, in the velocity distribution of state populations. In the presence of static magnetic or electric fields, the corresponding sub-Doppler features in the index of refraction can cause nonlinear optical rotation and induced ellipticity of resonant light propagating through the a...

Journal: :Physical review. D, Particles and fields 1994
Foot

In gauge theories like the standard model, the electric charges of the fermions can be heavily constrained from the classical structure of the theory and from the cancellation of anomalies. We argue that the anomaly conditions are not quite as well motivated as the classical constraints, since it is possible that new fermions could exist which cancel potential anomalies. For this reason we exam...

2010
Peter Cameron

The absence of three fundamental entities from the experimental evidence is notable. The search for two, the magnetic monopole and the electric dipole moment, is extensively documented in the literature. The third, the electric flux quantum, is remarkably absent. One is tempted to speculate that these circumstances are related, and that exploration of the electric flux quantum might shed light ...

2014
Ying Han Yan Liu Guoqiang Zhang Xiang Zhao

The problem of energy saving and environment protection has become more and more crucial in China. China's energy development process shows that the development of pure electric vehicle to China's energy structure optimization and the construction of the ecological environment. New promising technology that makes the problem solved is reviewed in this paper, including current status of electric...

Journal: :Optics express 2011
Emre Sari Sedat Nizamoglu Jung-Hun Choi Seung-Jae Lee Kwang-Hyeon Baik In-Hwan Lee Jong-Hyeob Baek Sung-Min Hwang Hilmi Volkan Demir

We report on the electric field dependent carrier dynamics and optical absorption in nonpolar a-plane GaN-based quantum heterostructures grown on r-plane sapphire, which are surprisingly observed to be opposite to those polar ones of the same materials system and similar structure grown on c-plane. Confirmed by their time-resolved photoluminescence measurements and numerical analyses, we show t...

2014
Federico Pedraja Pedro Aguilera Angel A. Caputi Ruben Budelli

Modeling the electric field and images in electric fish contributes to a better understanding of the pre-receptor conditioning of electric images. Although the boundary element method has been very successful for calculating images and fields, complex electric organ discharges pose a challenge for active electroreception modeling. We have previously developed a direct method for calculating ele...

Journal: :The Biochemical journal 1993
A Mehlert L Varon I Silman S W Homans M A Ferguson

The structure of the glycan moiety of the glycosyl-phosphatidylinositol (GPI) membrane anchor from Torpedo californica (electric fish) electric-organ acetylcholinesterase was solved using n.m.r., methylation analysis and chemical and enzymic micro-sequencing. Two structures were found to be present: Glc alpha 1-2Man alpha 1-2Man alpha 1-6Man alpha 1-4GlcN alpha 1-6myo-inositol and Glc alpha 1-2...

Journal: :Physical review letters 2006
Z L Chen G R Kumar Z M Sheng T Matsuoka Y Sentoku M Tampo K A Tanaka T Tsutsumi T Yabuuchi R Kodama

We observe a hollow structure and a fine ring in the proton images from a petawatt scale laser interaction with a "cone-fiber" target. The protons related to the hollow structure are accelerated from the cone-tip surface and deflected later by a radial electric field surrounding the fiber. Those associated with the fine ring are accelerated from the fiber surface by this radial electric field. ...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 1972
D E Green S Ji

A NEW MODEL OF MITOCHONDRIAL STRUCTURE AND FUNCTION IS PROPOSED ON THE BASIS OF FOUR FUNDAMENTAL ASSUMPTIONS: (a) electrons and protons are separated in the electron transfer complexes; (b) the ATPase undergoes conformational state-transitions induced by an electric field; (c) energy is transferred by an electric field effect; and (d) a conformationally strained protein system can be relaxed vi...

Journal: :amirkabir international journal of electrical & electronics engineering 2015
r. khosravi s. h. sadeghi r. moini

the produced electric and magnetic fields due to lightning strikes to mountainous ground are determined in this paper. for the sake of simplicity a cone-shaped ground with finite conductivity is assumed to represent a natural nonflat ground. by this assumption, we deal with an axillary symmetrical structure so we use the cylindrical 2d-fdtd to save the simulation memory and time, dramatically. ...

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