نتایج جستجو برای: structure property relationship studies

تعداد نتایج: 3314396  

In this work the electrooxidation half-wave potentials of some Benzoxazines were predicted from their structural molecular descriptors by using quantitative structure-property relationship (QSAR) approaches. The dataset consist the half-wave potential of 40 benzoxazine derivatives which were obtained by DC-polarography. Descriptors which were selected by stepwise multiple selection procedure ar...

Journal: :journal of the iranian chemical research 0
mehrana motiee young researchers club, islamic azad university, arak branch, arak, iran

an important property that has been extensively studied in quantitative structure activityrelationship (qsar) is the chromatographic retention index. qsar study is suggested for theprediction of retention index of alkanes and alkenes compounds. modeling of the retention indexof alkanes and alkenes compounds as a function of molecular structures was established bydifferent chemometrics methods. ...

2017
Süleyman Ediz

Topological indices have been used to modeling biological and chemical properties of molecules in quantitive structure property relationship studies and quantitive structure activity studies. All the degree based topological indices have been defined via classical degree concept. In this paper we define a novel degree concept for a vertex of a simple connected graph: R degree. And also we defin...

2017
Süleyman Ediz

Topological indices have been used to modeling biological and chemical properties of molecules in quantitive structure property relationship studies and quantitive structure activity studies. All the degree based topological indices have been defined via classical degree concept. In this paper we define a novel degree concept for a vertex of a simple connected graph: S degree. And also we defin...

In this work the electrooxidation half-wave potentials of some Benzoxazines were predicted from their structural molecular descriptors by using quantitative structure-property relationship (QSAR) approaches. The dataset consist the half-wave potential of 40 benzoxazine derivatives which were obtained by DC-polarography. Descriptors which were selected by stepwise multiple selection procedure ar...

Topological indices are the real number of a molecular structure obtained via molecular graph G. Topological indices are used for QSPR, QSAR and structural design in chemistry, nanotechnology, and pharmacology. Moreover, physicochemical properties such as the boiling point, the enthalpy of vaporization, and stability can be estimated by QSAR/QSPR models. In this study, the QSPR (Quantitative St...

Journal: :international journal of high risk behaviors and addiction 0
anahita khodabakhshi koolaee department of counseling, science and research branch of arak, islamic azad university, arak, ir iran hossein shaghelani lor department of psychology, university of science and culture, tehran, ir iran ali akbar soleimani department of psychology, university of science and culture, tehran, ir iran masoumeh rahmatizadeh department of psychology, university of science and culture, tehran, ir iran; department of psychology, university of science and culture, tehran, ir iran. tel: +98-9127216093

conclusions these results emphasize that an inappropriate decision making process pattern in a family has a significant effect on deviant behavior in adolescents. the fathers’ parenting is more strongly linked to their sons’ delinquency. so, family power structure and parent-child relationship can be considered in therapeutic interventions (prevention and treatment) for adolescents’ delinquency...

Journal: :The journal of physical chemistry. A 2005
Adelio R Matamala Ernesto Estrada

GTI-simplex is a new methodology that combines the generalized topological indices and the down hill simplex optimization procedure to search for optimized quantitative structure-property relationship models (Chem. Phys. Lett. 2005, 410, 343). In this study, the fundamental role of the graph topological distance inducing a local shell structure on vertexes and a detailed derivation of the GTI-d...

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