Results 251 to 260 of about 515,492 (292)

Electronic detectors for electron microscopy

Current Opinion in Structural Biology, 2007
Due to the increasing popularity of electron cryo-microscopy (cryoEM) in the structural analysis of large biological molecules and macro-molecular complexes and the need for simple, rapid and efficient readout, there is a persuasive need for improved detectors.
A R, Faruqi, R, Henderson
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On the electron-electron counterbalance hole

The Journal of Chemical Physics, 2008
When a many-electron system has spatial inversion symmetry, the electron-electron counterbalance hole implies that two electrons with parallel spins cannot be at opposite positions with respect to the inversion center, and its presence was pointed out in the literature [T. Koga, J. Chem. Phys.
Toshikatsu, Koga, Masahiro, Sekiya
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Electron—Electron Interaction and Electron Correlation

2000
The problem of electronic states in a solid is a many-body problem of a macroscopic number of particles since the electrons interact with each other through Coulomb repulsion. Since it is obviously impossible to solve such a formidable problem exactly, one has to resort to approximate methods.
Nobuo Tsuda, Keiichiro Nasu, Atsushi Fujimori, Kiiti Siratori   +3 more
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Electronic markets and electronic hierarchies in the context of electronic commerce

Proceedings of the 7th international conference on Electronic commerce - ICEC '05, 2005
According to the theory of Transaction Cost Economics, markets and hierarchies are two basic and alternative models of organization. In the environment of Electronic Commerce, markets and hierarchies have been transforming into Electronic markets (EMs) and Electronic Hierarchies (EHs).
Hongli Hu, Ping Li
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Electron–electron coincidence spectroscopies at surfaces

Journal of Electron Spectroscopy and Related Phenomena, 2002
In the past 20 years, a steadily increasing number of electron-electron coincidence experiments on atoms and molecules have contributed to a deeper understanding of electron-electron correlation effects. In more recent years this technique has been extended to the study of solid surfaces.
Stefani G, Iacobucci S, RUOCCO, Alessandro, Gotter R.   +3 more
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Electron–electron and electron–positron bremsstrahlung

Radiation Physics and Chemistry, 2006
Abstract The bremsstrahlung emitted in electron–electron (e–e) and electron–positron (e - –e + ) collisions is investigated. After a short description of the kinematics, cross sections exact to lowest-order perturbation theory are presented and compared with available approximations, and experiments on the two processes are ...
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Calculation of Electron-Electron Scattering

Physical Review, 1958
The matrix elements involved in the calculation of electron-electron and positron-electron scattering are written down explicitiy for a complete set of initial and final spin states of the particles. This permits the evaluation of the cross section for any polarization combination desired, with a minimum of labor. (auth)
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The study of the electron-electron interaction in electron gun

Microelectronic Engineering, 1986
Abstract The paper summarizes the up-to-date study of the electron -electron interaction of beam electrons in columns. The electron-electron interaction of beam electrons results in two effects to influence the electron optical properties of columns: the trejectroy displacement and the the energy spread which is called as Boersch effect.
Wu yajun, Wei maoxin
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Electron screening and electron–electron scattering mechanisms

Journal of Electron Spectroscopy and Related Phenomena, 2013
Abstract The roles of binary and multiple scattering are considered in the context of electron scattering and diffraction on the W(1 1 0) and W(1 1 0) + O(1 × 1) surfaces for energies from 10 to 40 eV. We define a binary scattering mechanism as the incident electron interacting with the field of a valence electron with conservation of the total ...
O.M. Artamonov, S.N. Samarin, J.F. Williams   +2 more
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Electronic Markets and Electronic Governments

International Journal of Electronic Commerce, 1997
Information technology (IT) has been able to transform the way many business transactions are organized. Mergers, acquisitions, outsourcing, and divestitures are all well-known changes that have resulted from the ability of IT to change the way organizations monitor and coordinate activities.
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