نتایج جستجو برای: new energies

تعداد نتایج: 1893861  

2001
Wendy D. Cornell Piotr Cieplak Christopher I. Bayly Ian R. Gould Kenneth M. Merz David M. Ferguson David C. Spellmeyer Thomas Fox James W. Caldwell Peter A. Kollman

We present the derivation of a new molecular mechanical force field for simulating the structures, conformational energies, and interaction energies of proteins, nucleic acids, and many related organic molecules in condensed phases. This effective two-body force field is the successor to the Weiner et al. force field and was developed with some of the same philosophies, such as the use of a sim...

Journal: :The Journal of chemical physics 2009
Juan I Rodríguez Paul W Ayers Andreas W Götz F L Castillo-Alvarado

A new approach for computing the atom-in-molecule [quantum theory of atoms in molecule (QTAIM)] energies in Kohn-Sham density-functional theory is presented and tested by computing QTAIM energies for a set of representative molecules. In the new approach, the contribution for the correlation-kinetic energy (T(c)) is computed using the density-functional theory virial relation. Based on our calc...

Journal: :iranian journal of hydrogen and fuel cell 0
ali kaflou department of advanced materials & renewable energy, iranian research organization for science and technology mona moayeri department of advanced materials & renewable energy, iranian research organization for science and technology davood sadeghi department of chemical technologies, iranian research organization for science and technology, tehran

recently, the use of renewable energies has increased to  environmental pollution, limitation of fossil energy resources and energy security  one of the means that enable us to use such energies is fuel cells (fc). however, there are many problems  in the commercialization of fc from an economically and operation perspective. one of the most important problems is heat management. new heat pipes...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده فنی مهندسی 1387

the outcome of this research is a practical framework for “idea generation phase of new product development process based on customer knowledge”. in continue, the mentioned framework implemented in a part of iran n.a.b market and result in segmenting and profiling this market. also, the critical new product attributes and bases of communication message and promotion campaigns extracted. we have...

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