نتایج جستجو برای: quantitative structure

تعداد نتایج: 1841163  

Journal: :Acta Crystallographica Section A Foundations of Crystallography 2004

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان - دانشکده ادبیات و علوم انسانی 1388

abstract: the present thesis includes ; one preface and 11speeches , that each speech considered in different researches . the prefact part , studied grammer back ground , the first speech considered a brief description about grammatical credits . the second speech considered the different typs of sentences , from structure and meaning points of view . the third speech considered the verb es...

Journal: :caspian journal of chemistry 0
mohammad hossein fatemi chemometrics laboratory, faculty of chemistry, university of mazandaran, babolsar, iran zohreh gharehchahi chemometrics laboratory, faculty of chemistry, university of mazandaran, babolsar, iran

in this work, quantitative structure-property relationship (qspr) approaches were used to predict the redox potential of 42 phenolic antioxidants. the structures of all compounds optimized by the am1 semi-empirical method and then a large number of molecular descriptors were calculated for each compound in the data set. subsequently, stepwise multilinear regression was applied to select the mos...

Journal: :caspian journal of chemistry 2012
mohammad hossein fatemi afsane heidari hanieh malekzadeh

in this work some quantitative structure activity relationship models were developed for prediction of three bioenvironmental parameters of 28 volatile organic compounds, which are used in assessing the behavior of pollutants in soil. these parameters are; half-life, non dimensional effective degradation rate constant and effective péclet number in two type of soil. the most effective descripto...

Journal: :journal of the iranian chemical research 0
mukesh chandra sharma school of pharmacy, devi ahilya vishwavidyalaya, khandwa road, indore (m.p)-452 001, india smita sharma department of chemistry, yadhunath mahavidyalya bhind (m.p)- 477001, india dharm veer kohli department of pharmaceutical sciences, university sagar (m.p) 470003, india subash chandra chaturvedi shri arvindo, institute of pharmacy ujjain, road indore (m.p) 453111, india

the use of quantitative structure–activity relationships, since its advent, has becomeincreasingly helpful in understanding many aspects of biochemical interactions in drug research.this approach was utilized to explain the relationship of structure with biological activity ofantibacterial. for the development of new fungicides against, the quantitative structural–activityrelationship (qsar) an...

Journal: :research in pharmaceutical sciences 0
m shahlaei a fassihi a nezami

in the present study, quantitative relationships between molecular structure and anti-tubercular activity of some 5-methyl/trifluoromethoxy-1 h -indole-2,3-dione-3-thiosemicarbazone derivatives were discovered. the detailed application of an efficient linear method and principal component regression (pcr) for the evaluation of quantitative structure activity relationships of the studied compound...

Journal: :The Journal of Physical Chemistry C 2015

Journal: :International Journal of Molecular Sciences 2002

Journal: :Genetics 1983
A R Rogers H C Harpending

A migration matrix model is used to investigate the behavior of neutral polygenic characters in subdivided populations. It is shown that gametic disequilibrium has a large effect on the variance among groups but none at all on its expectation. The variance of among-group variance is substantial and does not depend on the number of loci contributing to variance in the character. It is just as la...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید