Results 1 to 10 of about 809,352 (346)

Theory for atomic diffusion on fixed and deformable crystal lattices

, 1999
We develop a theoretical framework for the diffusion of a single unconstrained species of atoms on a crystal lattice that provides a generalization of the classical theories of atomic diffusion and diffusion-induced phase separation to account for ...
Fried, Eliot, Sellers, Shaun
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The effect of leveling coatings on the atomic oxygen durability of solar concentrator surfaces [PDF]

Space power systems for Space Station Freedom will be exposed to the harsh environment of low earth orbit (LEO). Neutral atomic oxygen is the major constituent in LEO and has the potential of severely reducing the efficiency of solar dynamic power ...
Degroh, Kim K., Dever, Therese M., Quinn, William F.   +2 more
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Molecular-orbital theory for the stopping power of atoms in the low velocity regime:the case of helium in alkali metals

, 1993
A free-parameter linear-combination-of-atomic-orbitals approach is presented for analyzing the stopping power of slow ions moving in a metal. The method is applied to the case of He moving in alkali metals.
A. Arnau, A.D. Sutton, D.A. Papaconstantopoulos, D.E. Meltzer, E. Clementi, E. Fermi, E. Rutheford, E. Rutheford, E.C. Goldberg, E.J. Williams, F. Flores, F. Flores, F. Sols, F.J. García Vidal, G. Peter Lepage, H. Wormeester, H.A. Bethe, J. Lindhard, J.A. Majewshi, J.R. Sabin, José J. Dorado, P. Bauer, P.L. Grande, P.M. Echenique, P.M. Echenique, P.O. Löwdin, R.H. Ritchie, S.F. Boys, W. A. Harrison, W. Brant   +29 more
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Studying Radiation-Induced Degradation of Reinforced Concrete Structures: Review and Numerical Analysis of Reinforcement Corrosion Processes in Concrete

Applied Sciences
This study addresses the operational degradation of reinforced concrete structures of buildings and facilities where radioactive materials and waste are handled, if degradation is caused by the joint effect of ionizing radiation from materials ...
Rustem Omarov, Vyacheslav Belov, Andrey Morozenko   +2 more
doaj   +1 more source

Wind Tunnel Experimental Study on the Flight Parameters of a Bio-Inspired Bat-like Flapping-Wing Robot

Aerospace
With the in-depth study of the unique flight ability of bats in the field of bionic robots, wind-tunnel experiments have become an important means to verify the feasibility of bat-like flying robot structures.
Bosong Duan, Junlei Liu, Shuai Wang, Zhaoyang Chen, Bingfeng Ju   +4 more
doaj   +1 more source

Investigation of conventional and Super-X divertor configurations of MAST Upgrade using SOLPS

, 2014
One of the first studies of MAST Upgrade divertor configurations with SOLPS5.0 are presented. We focus on understanding main prospects associated with the novel geometry of the Super-X divertor (SXD).
Fishpool, G, Fundamenski, W, Havlickova, E, Morris, A W, Wischmeier, M   +4 more
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An overview of the first results on the solar array materials passive LDEF experiment (sample), A0171 [PDF]

Power degradation in the solar cells was consistent with the exposure environment and appears to be produced principally by the radiation and atomic oxygen environments. Atomic oxygen erosion was generally as expected; atomic oxygen effects dominated for
Whitaker, Ann F., Young, Leighton E.
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New technical solutions for the design of NPP passive safety systems [PDF]

Nuclear Energy and Technology
The paper describes the new principle of passive NPP safety systems designing, in which the natural circulation of working fluid or gas is replaced by forced circulation in order to increase it’s capacity.
Sergey L. Soloviev, Denis G. Zaryugin, Sergey G. Kalyakin, Sergey T. Leskin, Dmitry S. Soloviev   +4 more
doaj   +3 more sources

The global characteristics of atmosphere emissions in the lower thermosphere and their aeronomic implications [PDF]

The green line of atomic oxygen and the Herzberg bands of molecular oxygen as observed from the OGO-4 airglow photometer are discussed in terms of their spatial and temporal distributions and their relation to the atomic oxygen content in the lower ...
Chandra, S., Reed, E. I.
core   +1 more source

Accuracy of an Atomic Microwave Power Standard [PDF]

, 2005
David C. Paulusse, N. L. Rowell, Alain Michaud   +2 more
openalex   +1 more source