نتایج جستجو برای: atomic measure

تعداد نتایج: 434106  

1997
OLIVIERO CARUGO

A probabilistic measure of structural similarity is proposed which takes into account the degree of spatial localization of atoms expressed in atomic displacement parameters.

Journal: :iranian journal of medical sciences 0
bahareh nazemi salman department of pedodontics, dental school, zanjan university of medical sciences, zanjan, iran surena vahabi department of periodontics, dental school, shahid beheshti university of medical sciences, tehran, iran anahita javanmard dentist; tehran, iran

atomic force microscopy (afm) is a three-dimensional topographic technique with a high atomic resolution to measure surface roughness. afm is a kind of scanning probe microscope, and its near-field technique is based on the interaction between a sharp tip and the atoms of the sample surface. there are several methods and many ways to modify the tip of the afm to investigate surface properties, ...

2016
Marc Rafelski Jonathan P. Gardner Michele Fumagalli Marcel Neeleman Harry I. Teplitz Norman Grogin Anton M. Koekemoer Claudia Scarlata

Current observational evidence suggests that the star formation rate (SFR) efficiency of neutral atomic hydrogen gas measured in damped Lyα systems (DLAs) at ~ z 3 is more than 10 times lower than predicted by the Kennicutt–Schmidt (KS) relation. To understand the origin of this deficit, and to investigate possible evolution with redshift and galaxy properties, we measure the SFR efficiency of ...

Journal: :The Journal of chemical physics 2008
P Murali U Ramamurty Vijay B Shenoy

A possible mechanism of strain accommodation in large deformation of glasses is crystallization; deformation stability is a measure of the resistance of glasses to crystallization. We study the effect of atomic size ratio and atomic stiffness parameter (related to the curvature of the interatomic potential) on deformation stability of binary glasses using molecular static simulations. The defor...

Journal: :iranian journal of science and technology (sciences) 2011
m. m. golshan

in this work we investigate the thermal entanglement between two-level atoms and photons in a nonlinear cavity. we consider intensity-dependent couplings and calculate the negativity, as a measure of atom-photonentanglement. the cavity is assumed to be at a temperature t, so that all number of photons, and at the same time, both atomic states, with definite probabilities, are present. we then d...

2001
J. S. Noh T. K. Nath C. B. Eom J. Z. Sun X. Q. Pan

We report magnetotransport studies on La0.67Sr0.33MnO3 /SrTiO3 /La0.67Sr0.33MnO3 trilayer junctions, fabricated using 90° off-axis sputtering. Films were grown on both ~001! ~LaAlO3!0.3–~Sr2AlTaO6!0.7 and ~110! NdGaO3 substrates. The sputtered trilayers show improved junction resistance uniformity over those made using pulsed laser deposition. Cross-sectional transmission electron microscopy an...

2005
ERNESTO ESTRADA JUAN A. RODRÍGUEZ-VELÁZQUEZ MILAN RANDIĆ

A graph theoretic measure of extended atomic branching is defined that accounts for the effects of all atoms in the molecule, giving higher weight to the nearest neighbors. It is based on the counting of all substructures in which an atom takes part in a molecule. We prove a theorem that permits the exact calculation of this measure based on the eigenvalues and eigenvectors of the adjacency mat...

2003
K. Ch. Chatzisavvas C. P. Panos S. E. Massen

An information measure inspired by Onicescu’s information energy and Uffink’s information measure (recently discussed by Brukner and Zeilinger) are calculated as functions of the number of particles N for fermionic systems (nuclei and atomic clusters) and correlated bosonic systems (atoms in a trap). Our results are compared with previous ones obtained for Shannon’s information entropy, where a...

Journal: :Theoretical Informatics and Applications 2023

We define the notions of strong and strict recurrency for actions countable ordered groups on σ-finite non atomic measure spaces with quasi-invariant measures. show that is equivalent to existence weakly wandering sets positive measure. also certain p.m.p ergodic system not strictly recurrent, which shows are equivalent.

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