نتایج جستجو برای: zeolites mp2

تعداد نتایج: 6511  

Journal: :Journal of Chemical Theory and Computation 2021

In this paper, correlated studies on a test set of 36 small molecules are carried out with both wavefunction (HF, MP2, CCSD) and density functional (LDA, KT3, cTPSS, cM06-L) methods. The effect correlation exotic response properties such as molecular electronic anapole susceptibilities is studied the performance various approximations benchmarked against CCSD and/or MP2. Atoms traditionally cla...

Journal: :journal of chemical and petroleum engineering 2011
amin bazyari yadollah mortazavi abbas ali khodadadi negahdar hosseinpour mitra bahri

nay zeolites with different framework si/al ratios were synthesized via hydrothermal technique. structural characteristics of the synthesized zeolites were determined by using xrd, xrf, sem, bet analyses. the effects of operating conditions of hydrothermal dealumination, i.e. time, temperature and partial pressure of water vapor on dealumination of the y zeolites framework and their structure w...

Journal: :ECS Journal of Solid State Science and Technology 2022

Relative populations of three energy-lowest IPR (isolated-pentagon-rule) isomers Eu@C 88 are computed using the Gibbs energy based on characteristics from density functional theory and MP2 calculations (M06-2X/3-21G∼SDD entropy term, MP2=FU/6-31G*∼SDD or B2PLYPD=FU/6-31 + G*∼SDD energetics). The predict coexistence isomers, in agreement with extraction a polar solvent, offer possible explanatio...

Journal: :The Journal of biological chemistry 1986
A Persechini K E Kamm J T Stull

Calmodulin-dependent myosin light chain kinase phosphorylates two light chain subunits on each myosin molecule. We have developed a method for measuring nonphosphorylated, monophosphorylated, and diphosphorylated forms of myosin in smooth muscle. Four protein bands were separated in tissue extracts by nondenaturing polyacrylamide gel electrophoresis in the presence of pyrophosphate. Immunoblots...

Journal: :Applied and environmental microbiology 1999
C K Chen H P Blaschek

The addition of sodium acetate to chemically defined MP2 medium was found to increase and stabilize solvent production and also increase glucose utilization by Clostridium beijerinckii NCIMB 8052. RNA and enzyme analyses indicated that coenzyme A (CoA) transferase was highly expressed and has higher activity in C. beijerinckii NCIMB 8052 grown in MP2 medium containing added sodium acetate than ...

2010
Peter Schwerdtfeger Behnam Assadollahzadeh Andreas Hermann

Complete basis set limit calculations are carried out for the fcc lattices of solid neon and argon, using secondto fourth-order Møller-Plesset theory, MP2–MP4, and coupled-cluster calculations, CCSD T , to describe electron correlation within a many-body expansion of the interaction potential up to third order. A correct description of the three-body Axilrod-Teller-Muto term for the solid state...

Journal: :The journal of physical chemistry. A 2010
B Ramachandran Purnima Kharidehal Lawrence M Pratt Stewart Voit Fabian N Okeke Monique Ewan

This study explores the degree to which GGA, meta-GGA, hybrid GGA, and hybrid meta-GGA functionals of density functional theory (DFT), when used with the 6-31+G(d) basis set, are able to reproduce the MP2/6-31+G(d) structures and energetics of the species involved in the reactions of halomethyllithium carbenoids with ethylene. While many popular DFT functionals have been parametrized and/or ben...

Journal: :journal of nanostructures 2013
a. nemati kharat r. zafari

current article describes application of zeolites in fluid catalytic cracking (fcc). the use of several zeolitic additives for the production light olefins and reduction of pollutants is described. application of zeolites as fluid catalytic cracking (fcc) catalysts and additives due to the presence of active acid sites in the zeolite framework  increase the formation of desired cracking product...

2011
Prabir K. Dutta Michael Severance

The cages and channels of aluminosilicate zeolites provide a novel environment for molecular and nanoparticle assembly for photochemical reactions. In their dehydrated forms, zeolites can be active participants in reactions with photoexcited entrapped molecules as electron donors and acceptors. The charge-separated species thus formed are stabilized for hours. With hydrated zeolites, the encaps...

Journal: :PeerJ 2016
Freddy Asenjo Alejandro Olmos Patricia Henríquez-Piskulich Victor Polanco Patricia Aldea Juan A Ugalde Annette N Trombert

Background. The honey bee (Apis mellifera) is the most important pollinator in agriculture worldwide. However, the number of honey bees has fallen significantly since 2006, becoming a huge ecological problem nowadays. The principal cause is CCD, or Colony Collapse Disorder, characterized by the seemingly spontaneous abandonment of hives by their workers. One of the characteristics of CCD in hon...

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