نتایج جستجو برای: quantum chemistry

تعداد نتایج: 394832  

ژورنال: :international journal of new chemistry 0

in this study, the drug atenolol on c60 fullerene were the drug and its derivatives were optimized fullerene. nbo and nmr for complex computations required in the hf/6-31g (d) and b3lyp/6-31g (d) quantum chemistry method was used. mechanical quantum calculations in theory level of b3lyp/6-31g were performed on structure of atenolol and nano fullerene atenolol with different positions of linking...

Nastaran Maddah Zadeh Darini Roya Ahmadi

In this study, the drug atenolol on C60 fullerene were the drug and its derivatives were optimized fullerene. NBO and NMR for complex computations required in the HF/6-31G (d) and B3LYP/6-31G (d) quantum chemistry method was used. Mechanical quantum calculations in theory level of B3LYP/6-31G were performed on structure of atenolol and nano fullerene atenolol with different positions...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور 1386

چکیده ندارد.

2007
Hinne Hettema

This note is intended to address one particular issue in the relative status of Quantum Chemistry in comparison to both Chemistry and Physics. It has been suggested, in the context of the question of the reduction relations between Chemistry and Physics that Quantum Chemistry as a research programme is incapable of furnishing useful guidance to practising chemists. If true, this claim will let ...

Journal: :Journal of Chemical Education 1982

2011

Human beings use different methods to understand the world, religiously or scientifically, empirically or theoretically, synthetically or analytically. Quantum chemistry is one of the these methods. Starting from first principles of quantum mechanics, applying different mathematical and physical approximations, the behaviors of molecules are described. Before the discussion of the complex theor...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه الزهراء - دانشکده علوم پایه 1387

چکیده ندارد.

Journal: :Philosophical transactions. Series A, Mathematical, physical, and engineering sciences 2007
Nicholas A Besley

Quantum chemistry is a field of science that has undergone unprecedented advances in the last 50 years. From the pioneering work of Boys in the 1950s, quantum chemistry has evolved from being regarded as a specialized and esoteric discipline to a widely used tool that underpins much of the current research in chemistry today. This achievement was recognized with the award of the 1998 Nobel Priz...

Journal: :The journal of physical chemistry letters 2014
Jarrod R McClean Ryan Babbush Peter J Love Alán Aspuru-Guzik

Accurate prediction of chemical and material properties from first-principles quantum chemistry is a challenging task on traditional computers. Recent developments in quantum computation offer a route toward highly accurate solutions with polynomial cost; however, this solution still carries a large overhead. In this Perspective, we aim to bring together known results about the locality of phys...

Journal: :Philosophical transactions. Series A, Mathematical, physical, and engineering sciences 2012
Dawei Lu Nanyang Xu Boruo Xu Zhaokai Li Hongwei Chen Xinhua Peng Ruixue Xu Jiangfeng Du

Quantum computers have been proved to be able to mimic quantum systems efficiently in polynomial time. Quantum chemistry problems, such as static molecular energy calculations and dynamical chemical reaction simulations, become very intractable on classical computers with scaling up of the system. Therefore, quantum simulation is a feasible and effective approach to tackle quantum chemistry pro...

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