نتایج جستجو برای: mechanical methods

تعداد نتایج: 2077186  

2014
Pearl Pu

A knowledge representation scheme, QUORUM (Qualitative reasoning Of Repair and Understanding of Mechanisms), has been constructed to apply qualitative techniques to the mechanical domain, which is an area that has been neglected in the qualitative reasoning field. In addition, QUORUM aims at providing foundations for building a repair expert system. The problem in constructing such a representa...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 1952
R G Parr B L Crawford

In April of 1950, at the Detroit ACS meeting, a group of chemists and physicists fell into a discussion of the inadequacies of valence theory, and what might be done to improve it. The need felt most acutely was a reliable table of the difficult integrals which inevitably turn up in valence calculations. Everyone agreed that a conference on such integrals would be desirable, both to find out wh...

Journal: :Current topics in medicinal chemistry 2010
Ting Zhou Danzhi Huang Amedeo Caflisch

Quantum mechanical (QM) methods are becoming popular in computational drug design and development mainly because high accuracy is required to estimate (relative) binding affinities. For low-to medium-throughput in silico screening, (e.g., scoring and prioritizing a series of inhibitors sharing the same molecular scaffold) efficient approximations have been developed in the past decade, like lin...

2010
Suzanne T. Millman

Mechanical methods of euthanasia have distinct welfare advantages, since when the methods are employed correctly animals are rendered instantly unconscious and hence unable to experience pain, fear or distress. When personnel are skilled and equipment is well maintained, death is rapidly and humanely induced, but these methods can be aesthetically disturbing for some people. Mechanical methods ...

Journal: :Accounts of chemical research 2014
Jiali Gao John Z H Zhang Kendall N Houk

T idea of developing a Special Issue on “Beyond QM/ MM: Fragment Quantum Mechanical Methods” for macromolecular simulations was conceived in March 2013 at Mesilla, New Mexico, where the Senior Editor (K.N.H.) and one of the guest editors (J.G.) attended the annual Mesilla Workshop on chemical dynamics. This proposal was warmly supported by the Editors, and an issue was quickly slated to be publ...

Journal: :Annual review of physical chemistry 2002
Jiali Gao Donald G Truhlar

This review discusses methods for the incorporation of quantum mechanical effects into enzyme kinetics simulations in which the enzyme is an explicit part of the model. We emphasize three aspects: (a) use of quantum mechanical electronic structure methods such as molecular orbital theory and density functional theory, usually in conjunction with molecular mechanics; (b) treating vibrational mot...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - دانشکده زبانهای خارجی 1391

since its introduction in 1959, translation quality assessment (tqa) has been among the most addressed research topics in translation studies. during recent years, there has been a crucial increase on the study of tqa. various methods have come on scene. although these methods are based on scientific theories, most of them have remained at the level of theory. juliane house’s model is among tho...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی خواجه نصیرالدین طوسی - دانشکده مهندسی برق و کامپیوتر 1391

power transformers are important equipments in power systems. thus there is a large number of researches devoted of power transformers. however, there is still a demand for future investigations, especially in the field of diagnosis of transformer failures. in order to fulfill the demand, the first part reports a study case in which four main types of failures on the active part are investigate...

پایان نامه :0 1371

the treatment of in completely formed pulpless teeth has presented considrable problems. these teeth have wide open apexes and the walls of the root canal diverge toward the apical tissues. mechanical preparation cannot be done in the normal manner beacause of the large initial size and the taper of apical part of the canal , a mechanical stop cannot be produced at the apex of the canal and , t...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید