نتایج جستجو برای: tereoelectronic interactions

تعداد نتایج: 387717  

Journal: :journal of the iranian chemical research 0
davood nori-shargh department of chemistry, arak branch, islamic azad university, arak, iran sogand sarikhani department of chemistry, arak branch, islamic azad university, arak, iran hooriye yahyaei department of chemistry, zanjan branch, islamic azad university, zanjan, iran seiedeh negar mousavi department of chemistry, arak branch, islamic azad university, arak, iran nasrin masnabadi department of chemistry, roudehen branch, islamic azad university, roudehen, iran

nbo analysis and density functional theory (dft: b3lyp/6-311+g**) based method were used to study the impacts of the anomeric effects (ae) on the conformational properties of 2-methoxy-1,2,4,5-tetrahydro-benzo[d]oxepine (1), -thiepine (2) and -selenepine (3). the gibbs free energy difference (geq–gax) values (i.e. δgeq-ax) at 298.15 k and 1 atm between the axial and equatorial conformations inc...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان 1390

abstract the influence of cation?? and anion?? interactions on the strength and nature of n…h hydrogen bond has been investigated by quantum chemical calculations in s-triazine…3hf complex. ab initio calculations were performed at mp2/6-311++g(d,p) level of theory. the natural bond orbital (nbo) analysis and the bader’s quantum theory of atoms in molecules (aim) were also used to elucidate t...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علامه طباطبایی 1391

this research is about the political economy of china in central asia. in this research the political & economic interactions affected on chinas political economy in central asia are examined. chinas goal of presence in central asia including political-security, economic and energy goals is described in one part. in another part, the trade relations between china and central asian countries ar...

Davood Nori-Shargh, Hooriye Yahyaei Nasrin Masnabadi Seiedeh Negar Mousavi Sogand Sarikhani

NBO analysis and density functional theory (DFT: B3LYP/6-311+G**) based method were used to study the impacts of the anomeric effects (AE) on the conformational properties of 2-methoxy-1,2,4,5-tetrahydro-benzo[d]oxepine (1), -thiepine (2) and -selenepine (3). The Gibbs free energy difference (Geq–Gax) values (i.e. ΔGeq-ax) at 298.15 K and 1 atm between the axial and equatorial conformations inc...

Journal: :journal of physical & theoretical chemistry 2006
abdol-khalegh bordbar

in the present study, the binding isotherms for interaction of a homologous series of n-alkyltrimethyl ammonium bromides with bovine serum albumin (bsa) have been analyzed on basis of intrinsic thermodynamic quantities. in this regards, the intrinsic gibbs free energy of binding, agb(i,)„ has been estimated at various surfactant concentrations and its trend of variation for both binding sets ha...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده فنی مهندسی 1385

acknowledge the importance of e-commerce to their countries and to survival of their businesses and in creating and encouraging an atmosphere for the wide adoption and success of e-commerce in the long term. the investment for implementing e-commerce in the public sector is one of the areas which is focused in government‘s action plan for cross-disciplinary it development and e-readiness in go...

Journal: :Acta scientiarum polonorum. Technologia alimentaria 2014
Semih Ötles Ahmet Senturk

Although it is well known and identified that drug-drug interactions exist, the recognition of importance of food and drug interactions to practice has been growing much slower. On the other hand, drug-food/nutrient interactions continue to grow with the common use of medications. Beside the awareness of this type of interactions, food-drug interaction studies are critical to evaluate appropria...

Journal: :international journal of foreign language teaching and research 0
sousan sattar department of english, najafabad branch, islamic azad university, njafabad, iran reza biria department of foreign languages, islamic azad university, isfahan (khorasgan) branch, isfahan, iran sara mansouri department of english, najafabad branch, islamic azad university, njafabad, iran

abstract one of the main concerns in educational settings has been the degree of the learners’ involvement in learning and the extent to which they actively participate in classroom talks and interactions. the present study is an emic-based ethnographic study aimed at providing insights about patterns of talk and different degrees of interaction in efl university classes with a specific focus o...

Journal: :the iranian journal of pharmaceutical research 0
maria tavakoli ardakani 1- department of clinical pharmacy, school of pharmacy, shahid beheshti university of medical sciences, tehran, iran. 2- pharmaceutical sciences research center, shahid beheshti university of medical sciences, tehran, iran. kaveh kazemian 1- department of clinical pharmacy, school of pharmacy, mazandaran university of medical sciences, sari, iran. 2- students research committee, shahid beheshti university of medical sciences, tehran, iran. jamshid salamzadeh department of clinical pharmacy, school of pharmacy, mazandaran university of medical sciences, sari, iran. mahshid mehdizadeh bone marrow transplantion center, taleghani hospital,shahid beheshti university of medical sciences, tehran, iran.

cancer patients are more susceptible to adverse drug-drug interactions (ddis) due to receiving multiple medications especially chemotherapy medications, hormonal agents and supportive care drugs. the aim of this study is to describe the prevalence of potential ddis and to identify risk factors for these potential interactions in hospitalized cancer patients in a developing country.a cross-secti...

Journal: :journal of ornamental plants 2015
p. mehalingam

the organization of gall on the ovary ofsesamum indicum l induced by the gall midge, asphondylia sesami felt, not only affects biochemical equilibrium of the host but also causes disturbed vegetative growth and reduced seed-setting. the toxicity created by the gall maker induces the re-orientation of vasculature cecidogenetic stimuli lead to excessive hypertrophy and hyperplasy forming the gall...

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