نتایج جستجو برای: derived set

تعداد نتایج: 1105898  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده علوم پایه 1390

. ترکیبات سنتزشده با استفاده از تکنیـک های طیف سنجـیir ، 13c nmr، 1h،31p ، 119snو بلورنگاری با پرتو x مورد شناسایی قرار گرفتند. محاسبات nbo با روش dft(b3lyp) با استفاده از 6-31+g* basis set انجام شد. در نهایت اثر ضدمیکروبی برخی از ترکیبات سنتز شده علیه 2 نوع باکتری گرم مثبت استافیلوکوکوس اورئوس و باسیلوس سابتیلوس و 2 نوع باکتری گرم منفی اشریشیاکولی (ا.کولی) و هلیکوباکترپیلوری با استفاده از روش ...

2017
Tianyu Sun Jian Zou Guodong Chen Dan Hu Bin Wu Xingzhong Liu Xinsheng Yao Hao Gao

Four interesting sequoiatones stereoisomers (1-4) were isolated from a wetland soil-derived fungus Talaromyces flavus by chiral HPLC. On the basis of comprehensive NMR and mass analyses, their planar structures were elucidated as the same as that of sequoiatone B. Among them, 1 and 3 (or 2 and 4) were a pair of enantiomers, and 1 and 2 (or 3 and 4) were a pair of stereoisomers with epimerizatio...

1999
H. Dreizler S. Kassi

für Naturforschung in cooperation with the Max Planck Society for the Advancement of Science under a Creative Commons Attribution 4.0 International License. Dieses Werk wurde im Jahr 2013 vom Verlag Zeitschrift für Naturforschung in Zusammenarbeit mit der Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V. digitalisiert und unter folgender Lizenz veröffentlicht: Creative Commons Namen...

2001
VICTOR S. LAMZIN ZBIGNIEW DAUTER KEITH S. WILSON

A computer-readable dictionary for protein structure refinement is presented. The dictionary is based on the set of interatomic bonds and bond angles previously derived from small-molecule structures by Engh & Huber [Acta Cryst. (1991), A47, 392-400]. The internal inconsistency of the set is discussed. Some preliminary results derived from several protein structures refined at atomic resolution...

Journal: :Moscow Journal of Combinatorics and Number Theory 2019

Journal: :international journal of advanced design and manufacturing technology 0
moharam habibnejad department of mechanical engineering, irann university of science and technology hamed rahimi nohooji amin nikoobin

this paper presents optimal control method to path planning of mobile robots with flexible joints. dynamic equations are derived and additional kinematic constraints are used to solve the extra dofs arose from base mobility. then with modeling the elasticity at each joint as a linear torsinal spring, the set of equations are formed. the hamiltonian function is formed and the necessary condition...

Journal: :iranian journal of radiation research 0
n. demir physics department, faculty of arts and sciences, uludag university, gorukle campus,16059, bursa, turkey u. akar tarim physics department, faculty of arts and sciences, uludag university, gorukle campus,16059, bursa, turkey o. gurler physics department, faculty of arts and sciences, uludag university, gorukle campus,16059, bursa, turkey

background: in radiation therapy, water is the phantom material of choice, both for reference and for relative dosimetry measurements. solid phantoms, however, are more useful for routine measurements because they tend to be more robust and easier to set up than water phantoms. materials and methods: fluka input data cards have been arranged in sequential order. a simple cylindrical geometry wi...

Journal: :international journal of health policy and management 2015
gorik ooms

global health research is essentially a normative undertaking: we use it to propose policies that ought to be implemented. to arrive at a normative conclusion in a logical way requires at least one normative premise, one that cannot be derived from empirical evidence alone. but there is no widely accepted normative premise for global health, and the actors with the power to set policies may use...

Journal: :Medical care 2016
Feng Xie Eleanor Pullenayegum Kathy Gaebel Nick Bansback Stirling Bryan Arto Ohinmaa Lise Poissant Jeffrey A Johnson

BACKGROUND The 5-level version of the EQ-5D (EQ-5D-5L) was recently developed. A number of preference-based scoring systems are being developed for several countries around the world. OBJECTIVE To develop a value set for the EQ-5D-5L based on societal preferences in Canada. METHODS We used age, sex, and education quota sampling from the general population from 4 cities across Canada. Compos...

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