نتایج جستجو برای: cation distribution

تعداد نتایج: 661166  

2002
Mohammad Mousavi Giovanni Russello Michel Chaudron Michel Reniers Twan Basten Angelo Corsaro Sandeep Shukla Rajesh Gupta Douglas C. Schmidt

This paper describes an extension to the GAMMA formalism, which we name AspectGAMMA, and we show how non-computational aspects can be expressed separately from the computation in this framework. Examples of such aspects include real-time constraints, location/distribution aspects, behavioral requirement aspects, fault-tolerance aspects, power requirement aspects, and many others. The idea is to...

2011
Gaston Yalonetzky

Consider a matrix X, whose N rows have information on the attainments of N inviduals. Each column, therefore, hosts the distribution of each attainment across the population. The number of columns/variables is D. A typical attainment element of the matrix is: xnd (2 R), that is, the attainment of individual n in dimension/variable d. In the identi…cation stage, the variable-speci…c poverty line...

2003
M. Barbatti M. A. C. Nascimento

Structural and thermodynamic properties of hydrogen molecular clusters formed around an atomic or molecular cation are examined. The shell distribution of H2 molecules and the size of the clusters are discussed. The Bloom-Margenau model for predicting the number of neutral molecules that could bind to a cation core is investigated and its limitations are illustrated using the Li(H2)k clusters a...

2007
G. Vezzalini

The crystal structure of Elba dachiardite shows an unusual rotation of two tetrahedra around one edge. This rotation gives rise to two configurations which have the same frequency thus maintaining the statistical symmetry C2/m. The most probable distribution of ions indicates the presence of two cation sites and five water molecules. One cation site is at the crossing of the two systems of chan...

Niyaifar, Mohammad, Heidari, Mahboubeh,

In the present investigation, manganese ferrite nanoparticles substituted by cadmium with Mn1-xCdxFe2O4 composition and substituted amount x=(0, 0.1, 0.3, 0.5) were prepared by Sol-gel method. Pattern analysis of X-ray diffraction (XRD) confirmed ferrite single phase structure in all samples. The average crystal size was estimated from 17 to 22 nm. The chemical bonds and ferrite formation phase...

Fardin Seyyed Najafi Fatemeh Rekabdar Heidar Ranjbar Mahdi Abdollahi, Mohammad Reza Yousefi Parisa Alamdar

Polybutadiene nanoparticles were synthesized via batch emulsion polymerization of butadiene in the presence of potassium persulfate, disproportionate rosinate potassium cation and t-dodecyl mercaptane as initiator, emulsifier and chain transfer agent, respectively. Polymerization reaction was performed at different temperatures (60, 70 and 80 °C). Conversion was measured at the various time int...

2003
Christèle Beauvais Xavier Guerrault François-Xavier Coudert Anne Boutin Alain H. Fuchs

A Monte Carlo replica exchange (MCRE) algorithm was used to compute the sodium cation distribution in bare faujasite zeolite with a number of cations per unit cell ranging from zero (Si:Al f ∞) to 96 (Si:Al ) 1). Eight independent realizations of the system were simulated simultaneously, in the temperature range 3002325 K. The resulting distributions at room temperature were found to be in very...

2007
M. Fosgerau M. Bierlaire

This paper is an updated version of the paper \Discrete choice models with multiplicative error terms" by Fosgerau and Bierlaire (2006). We propose a multiplicative speci cation of a discrete choice model that renders choice probabilities independent of the scale of the utility. The scale can thus be random with unspeci ed distribution. The model mostly outperforms the classical additive formul...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 1984
W Lubitz F Lendzian H Scheer J Gottstein M Plato K Möbius

The light-induced cation radical of the primary electron donor, P(870) (+.), in photosynthetic reaction centers from Rhodospirillum rubrum G-9, has been investigated by electron-nuclear double resonance (ENDOR) in liquid aqueous solution. The measured hyperfine coupling constants are assigned to specific molecular positions by partial deuteration. Comparison with the bacteriochlorophyll a catio...

2010
Yixiao Sun Min Seong Kim

The paper provides a new class of over-identi…cation tests that are robust to heteroscedasticity and autocorrelation of unknown forms. The tests are based on the series long run variance estimator that is designed to pivotalize the moment restrictions. We show that when the number of terms used in the series long run variance estimator is …xed, the conventional J statistic, after a simple corre...

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