نتایج جستجو برای: and coπ stacking interactions
تعداد نتایج: 16869577 فیلتر نتایج به سال:
purpose a metabolic abnormality such as obesity is a major obstacle in the maintenance of the human health system and causes various chronic diseases including type 2 diabetes, hypertension, cardiovascular diseases, as well as various cancers. this study was designed to summarize the recent scientific knowledge regarding the anti-obesity role of curcumin (diferuloylmethane), which is isolated f...
the present study was concerned with exploring the frequency and linguistic focus of corrective feedback types given by novice and experienced female teachers working with young learners and compared it with those of elementary classes for adults. moreover, it aimed at measuring learners’ acknowledgement of teachers’ corrective feedback in the form of uptake in relation to linguistic coverage o...
the use of appropriate level of theories for studying weak interactions such as 8-8 stackinginteractions of aromatic molecules has been an important aspect, since the high level methods havelimitations for application to large molecules. the differences in the stacking energies of variousaromatic molecular structures are found significant. it is also very important for identifying the mostfavor...
abstract the present study deals with a comparison between reactive and pre-emptive focus-on-form in terms of application and efficiency. it was conducted in an intermediate english class in shahroud. 15 male learners participated in this research and their age ranged from 18 to 25. a course book, new interchange 3, and a complementary book were used. every session the learners gave lectures o...
[Co(II)(dpt)(NCS)2], where dpt = bis(3-aminopropyl)amine, was identified as a pentacoordinate Co(II) compound showing field-induced slow relaxation of magnetization. Furthermore, intermolecular ferromagnetic coupling mediated by Coπ non-covalent contacts, where π orbitals originate from the thiocyanato ligand, is reported for the first time.
the adsorption of pyrazolone(hpmsp), calix[4]-arene,cu and cs, on carbon nanotube(cnt) atroom temperature has been investigated using spectroscopy.uv spectroscopy indicated that pyrazolone molecules adsorbed on carbon nanotube at roomtemperature in compared calix[4]- arene molecules adsorbed approximately same.the amount ofpyrazolone(hpmsp) adsorb 3.8. le mol/g and amount calix[4]-arene adsorbe...
Deoxyribonucleic acid (DNA) is an important molecular target for anti-cancer agents due to its involvement in gene expression and protein synthesis which are fundamental steps in cell division and growth. A number of antineoplastic agents interfere with DNA and hence disturb the cell cycle. Compounds including planar aromatic rings are privileged scaffolds in binding to the DNA. This characteri...
4-(4H-1,2,4-Triazol-4-yl)phenol (compound I) as a triazol aromatic compound was obtained by the reaction diformylhydrazineand p-aminophenol in dimethylformamide (DMF) under hydrothermal condition. The crystal structure of this compound was determined by FT-IR spectroscopy, NMR, elemental analysis and single crystal X-ray diffraction method. Crystallographic data for I was collected at 298 K. Th...
Deoxyribonucleic acid (DNA) is an important molecular target for anti-cancer agents due to its involvement in gene expression and protein synthesis which are fundamental steps in cell division and growth. A number of antineoplastic agents interfere with DNA and hence disturb the cell cycle. Compounds including planar aromatic rings are privileged scaffolds in binding to the DNA. This characteri...
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