Results 271 to 280 of about 203,143 (312)
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Permeability relation for periodic structures
Magnetic Resonance Imaging, 1998The permeability relation for periodic porous media is studied with respect to other petrophysical parameters such as formation factor, porosity, surface-to-volume ratio, and nuclear magnetic resonance (NMR) relaxation time. All these quantities were computed for periodic structures of simple, body-centered, and face-centered cubic arrays of touching ...
K J, Dunn, G A, LaTorraca, D J, Bergman
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A ‘periodic table’ for protein structures
Nature, 2002Current structural genomics programs aim systematically to determine the structures of all proteins coded in both human and other genomes, providing a complete picture of the number and variety of protein structures that exist. In the past, estimates have been made on the basis of the incomplete sample of structures currently known.
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Structures and Superstructures in Periodical Polynucleotides
1986A renewed attention has been focused on the structural aspects of DNA in the last few years. Such revival of interest starting from the elucidation of the structure of some synthetic oligonucleotides is going beyond toward the understanding of the basic molecular mechanisms of control of genetic information, which are strictly correlated to the ...
DE SANTIS, Pasquale +3 more
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Resonances and Scattering by a Periodic Structure
Russian Journal of Mathematical PhysicszbMATH Open Web Interface contents unavailable due to conflicting licenses.
Borisov, D. I., Fedotov, A. A.
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Long-period polytype structures
Physical Review Letters, 1990Discussion du modele de Bruisma et Zangwill, en faisant intervenir deux effets de relaxation longitudinale, provenant des defauts d'empilement et des champs de deformation qui les ...
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Excitation of Rotationally Periodic Structures
Journal of Applied Mechanics, 1979A rotationally periodic structure consists of a finite number of identical substructures forming a closed ring. The vibrational behavior of such structures is considered, especially the forced response due to a rotating force. It is known that for a rotationally symmetric structure, excited by a rotating force, resonance for the n nodal diameters mode ...
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Electromagnetic Scattering by Periodic Structures
Journal of Mathematical Sciences, 2004The paper considers the existence and uniqueness problem for the stationary scattering of electromagnetic waves (diffraction) on a structure which is localized in the propagation direction of the wave, and is periodic in two other directions, taking piece-wise constant values (this corresponds to the usual structure of diffraction gratings).
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Vibration of Rotationally Periodic Structures
Journal of Sound and Vibration, 1994Abstract The purpose of this paper is to determine eigensolutions of a rotationally periodic structure P of period N in terms of those of the i th substructure S(i) of P. Let y(i) be the generalized displacement vector and f(i) be the generalized force vector at interface I(i) , where substructures S(i) and S(i - 1) are connected.
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