Results 231 to 240 of about 122,616 (284)

Facile synthesis of Co-SBA-16 mesoporous molecular sieves with EISA method and their applications for hydroxylation of benzene

Microporous and Mesoporous Materials, 2014
Abstract A series of cobalt-doped SBA-16 (Co-SBA-16) mesoporous molecular sieves with different Co/Si ratio have been directly synthesized by the evaporation induced self-assembly (EISA) method. Characterizations with XRF, XRD, TEM and N 2 adsorption–desorption measurements demonstrate that the resultant materials remain a relative ordered cubic ...
Yongli Dong, Xinlin Zhan, Xiaoyu Niu, Jing Li, Fulong Yuan, Yujun Zhu, Honggang Fu   +6 more
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An Application of Sieve Methods to Elliptic Curves

, 2001
Let E be an elliptic curve defined over the rationals. Koblitz conjectured that the number of primes p ? x such that the number of points |E(Fp)| on the curve over the finite field of p elements has prime order is asymptotic to CEx/(log x)2 for some constant CE. We consider curves without complex multiplication.
S. Ali Miri, V. Kumar Murty
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ChemInform Abstract: Application of the Sieve Method to the Enumeration of Stable Stereo and Position Isomers of a Series of Deoxycyclitols.

ChemInform, 1997
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
R. M. NEMBA, M. FAH
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APPLICATIONS OF SIEVE METHODS TO THE THEORY OF NUMBERS

Bulletin of the London Mathematical Society, 1980
D. R. Heath‐Brown
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Problems raised by the application of the usual methods of process identification to the determination of diffusion coefficient of gases in molecular sieves

Journal of Physics D: Applied Physics, 1977
A method is presented for measuring diffusion coefficient in molecular sieves where gas adsorption in the sieve does not appear because the experimental temperature pressure conditions are far from equilibrium liquid-vapour conditions. The method determines the relation which connects the pressure variation of gas in a system formed by a cell ...
M Betemps, S Scavarda, A Jutard, M Mange
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Application of the sieving by vision method to discriminate maize and grass silage images corresponding to different cutting lengths using the ABS vision system

, 2009
The ABS vision system used, in this experimentation, to acquire images in the flow, of maize and grass silage, can be used to acquire and compute images using the sieving by vision method, developed at Cemagref, to discriminate the different cutting lengths. But, to improve this system to obtain the best vision results, it is necessary, to our point of
B. Benet
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Application of the αs Method for Analysing Benzene, Dichloromethane and Methanol Isotherms Determined on Molecular Sieve and Superactivated Carbons

, 2000
P.J.M. Carrott, M.M.L. Ribeiro Carrott, Isabel Pestana da Paixão Cansado   +2 more
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Silicoaluminophosphate Molecular Sieves SAPO-11 and SAPO-41: Synthesis, Properties, and Applications for Hydroisomerization of C16+ n-Paraffins. Part 2: Current State of Research on Methods to Control the Crystal Morphology, Dispersion, Acidic Properties, Secondary Porous Structure, and Catalytic Properties of SAPO-11 and SAPO-41 in Hydroisomerization of C16+ n-Paraffins (A Review)

Petroleum Chemistry, 2021
The second part of the review presents the results of research on SAPO-11 and SAPO-41 molecular sieves over the last three decades, with particular emphasis on methods to control the acid properties, morphology, and secondary porous characteristics of these molecular sieves, as well as on the catalytic applications of SAPO-11 and SAPO-41 for ...
M. R. Agliullin, B. I. Kutepov, V. A. Ostroumova, A. L. Maximov   +3 more
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Bayes Empirical Estimation by the Method of Sieves with some Applications

1997
Let X be a random variable with the density function f(x|γ). Assume that the parameter γ is also a random variable with unknown a priori density θ(γ). In the paper the problem of approximation of a priori density via sieve is considered. The estimate obtained is further used to approximation of Bayes estimator of γ and Bayes risk by some Bayes ...
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Recent Advances in Tetra- (Ti, Sn, Zr, Hf) and Pentavalent (Nb, V, Ta) Metal-Substituted Molecular Sieve Catalysis

Chemical Reviews, 2023
Steven L Suib, Jan Přech, Ewelina Szaniawska   +2 more
exaly