نتایج جستجو برای: conformational distribution

تعداد نتایج: 645101  

Journal: :journal of physical & theoretical chemistry 2012
e. pournamdari m. monajjemi

bcn compounds have been researched theoretically and experimentally widely. in this paper, weintroduce the theoretical prediction of ternary b-c-n compounds. nmr spectroscopy was employedextensively to study these ternary nanostructures. we discuss the utilization of chemical shiftinformation as well as ab initio calculations of nuclear shielding for h20134c9n4 structuredetermination. we calcul...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 1994
mehran chiaci ali mohajeri

conformational properties of n-aryl-1-azacyclooctan-5- ones with a p-methyl, m-methyl, and p-methoxy group as a substituent have been studied by 1h-nmr, 13c-nmr and ir spectroscopies. transannular interaction of the two functional groups have been examined from the ring inversion barriers and the carbonyl vibrational frequencies with reference to the corresponding data of the respective monofun...

Journal: :journal of paramedical sciences 0
mona zamanian-azodi proteomics research center, faculty of paramedical sciences, shahid beheshti university of medical sciences, tehran mohammad esmaeil akbari cancer research center, shahid beheshti university of medical sciences, tehran hamidreza khademi dept. of biology, science and research branch, islamic azad university, tehran

albumin has a fundamental role in human body. its main tasks in blood are to regulate osmotic blood pressure, maintaining the ph, and transporting metabolites and drugs throughout the vascular system.  pharmacological studies of the interaction of drugs on hsa are important due to structural and functional changes of this vital protein; thus, here in this research the effect of valproate as a c...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2003
O K Dudko A E Filippov J Klafter M Urbakh

Dynamic force spectroscopy of single molecules is described by a model that predicts a distribution of rupture forces, the corresponding mean rupture force, and variance, which are all amenable to experimental tests. The distribution has a pronounced asymmetry, which has recently been observed experimentally. The mean rupture force follows a (lnV)2/3 dependence on the pulling velocity, V, and d...

Journal: :Journal of agricultural and food chemistry 2009
Jerome V Diaz Gordon E Anthon Diane M Barrett

It is well-known that an irreversible decrease in serum viscosity occurs when tomato juice is concentrated by evaporation into paste. Several studies have suggested that the loss in serum viscosity is due to pectin depolymerization, caused by the high temperatures used during industrial tomato paste production. This study demonstrates that conformational changes in pectin may play a more import...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده مهندسی 1392

چکیده رساله/پایان نامه : تاکنون روش‏های متعددی در ارتباط با مکان یابی خطا در شبکه انتقال ارائه شده است. استفاده مستقیم از این روش‏ها در شبکه توزیع به دلایلی همچون وجود انشعاب‏های متعدد، غیر یکنواختی فیدرها (خطوط کابلی، خطوط هوایی، سطح مقطع متفاوت انشعاب ها و تنه اصلی فیدر)، نامتعادلی (عدم جابجا شدگی خطوط، بارهای تک‏فاز و سه فاز)، ثابت نبودن بار و اندازه گیری مقادیر ولتاژ و جریان فقط در ابتدای...

The surface parameter of nanoparticles such as hydrophobicity and a hydrophilicity on protein structure and function is very important. In this study, conformational changes of glucose oxidase (GOx) in the mercaptopurine: GNPs and 11-mercaptoundecanoic acid: GNPs as a hydrophobic and a hydrophilic GNPs surface was investigated by various spectroscopic techniques, including: UV-Vis absorption, f...

ژورنال: مواد پرانرژی 2014

Tetrazoles and their derivatives are insensitive energetic molecules that can be used in the compounding of the high energy material. Herein, two types of bis hyroxyethyl tetrazole compounds have been synthesized using bisnitrile and sodium azide and via consequent alkylation of the reaction product .The structure of all products have been confirmed by 1HNMR, MASS spectroscopy and elemental...

Journal: :ACS Materials Science Au 2023

Living cells are characterized by the micrometric confinement of various macromolecules at high concentrations. Using droplets containing binary polymer blends as artificial cells, we previously showed that cell-sized causes phase separation solutions because length-dependent wetting polymers. Here, demonstrate confinement-induced heterogeneity polymers also emerges in single-component solution...

Journal: :Angewandte Chemie 2021

Abstract A new compound ( 1 ) formed by two antiparallelly disposed tetracyano thienoquinoidal units has been synthesized and studied electrochemistry, UV/Vis‐NIR, IR, EPR, transient spectroscopy. Self‐assembly of on a Au(111) surface investigated scanning tunneling microscopy. Experiments have rationalized quantum chemical calculations. exhibits unique charge distribution in its anionic form, ...

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