نتایج جستجو برای: qspr

تعداد نتایج: 745  

2006
Chanin Nantasenamat Tanawut Tantimongcolwat Thanakorn Naenna Virapong Prachayasittikul

A data set comprising of the selectivity index of pentachlorophenol-imprinted polymers against 53 pentachlorophenol and related compounds was obtained from the excellent work of Baggiani et al. Molecular descriptors of the phenol compounds were calculated with EDRAGON to obtain a total of 1,666 descriptors spanning 20 categories of molecular properties. Multivariate analysis of the data set was...

2014
M. Shahlaei A. Fassihi L. Saghaie A. Zare

A quantiatative structure property relationship (QSPR) treatment was used to a data set consisting of diverse 3-hydroxypyridine-4-one derivatives to relate the logarithmic function of octanol:water partition coefficients (denoted by log po/w) with theoretical molecular descriptors. Evaluation of a test set of 6 compounds with the developed partial least squares (PLS) model revealed that this mo...

Journal: :Journal of hazardous materials 2003
S R Saraf W J Rogers M S Mannan

There is considerable interest in prediction of reactive hazards based on chemical structure. Calorimetric measurements to determine reactivity can be resource consuming, so computational methods to predict reactivity hazards present an attractive option. This paper reviews some of the commonly employed theoretical hazard evaluation techniques, including the oxygen-balance method, ASTM CHETAH, ...

Journal: :The journal of physical chemistry. B 2007
Congyi Zhou Xi Chu Changming Nie

Group electronegativities, which take into account the influence of chemical environment, are calculated. Equilibrium electronegativity is defined on the basis of group electronegativity. Using relative bond lengths and equilibrium electronegativies, we create a novel semiempirical topological descriptor, Nt. A quantitative structure-property relationship (QSPR) model is subsequently developed ...

2015
Wensheng Wu Canyang Zhang Wenjing Lin Quan Chen Xindong Guo Yu Qian Lijuan Zhang

Self-assembled nano-micelles of amphiphilic polymers represent a novel anticancer drug delivery system. However, their full clinical utilization remains challenging because the quantitative structure-property relationship (QSPR) between the polymer structure and the efficacy of micelles as a drug carrier is poorly understood. Here, we developed a series of QSPR models to account for the drug lo...

2009
Chanin Nantasenamat Thanakorn Naenna Virapong Prachayasittikul

Quantitative structure-activity relationship (QSAR) modeling pertains to the construction of predictive models of biological activities as a function of structural and molecular information of a compound library. The concept of QSAR has typically been used for drug discovery and development and has gained wide applicability for correlating molecular information with not only biological activiti...

Journal: :Journal of molecular graphics & modelling 2008
Raoof Ghavami Amir Najafi Mohammad Sajadi Farhad Djannaty

In order to accurately simulate (13)C NMR spectra of hydroxy, polyhydroxy and methoxy substituted flavonoid a quantitative structure-property relationship (QSPR) model, relating atom-based calculated descriptors to (13)C NMR chemical shifts (ppm, TMS=0), is developed. A dataset consisting of 50 flavonoid derivatives was employed for the present analysis. A set of 417 topological, geometrical, a...

Journal: :Journal of chemical information and modeling 2010
Suman Sirimulla Maricarmen Lerma William C. Herndon

Experimental data of partial molar volumes of amino acids and small peptides were compiled from several publications and enabled us to perform a predicative analysis based on quantitative structure-property relationships (QSPR). Based on the simplest level of the descriptors, the new method has high accuracy and was found to be more reliable when compared to the latter QSPR method based on topo...

Journal: :research in pharmaceutical sciences 0

a quantiatative structure property relationship (qspr) treatment was used to a data set consisting of diverse 3-hydroxypyridine-4-one derivatives to relate the logarithmic function of octanol:water partition coefficients (denoted by log p o/w )  with theoretical molecular descriptors. evaluation of a test set of 6 compounds with the developed partial least squares (pls) model revealed that this...

Journal: :Symmetry 2022

Chemical structures are mathematically modeled using chemical graphs. The graph invariants including algebraic polynomials and topological indices related to the structure of molecules. Hosoya polynomial is a distance based closed form several indices. This article devoted compute two different atomic configurations (C4C8(R) C4C8(S)) C4C8 Carbon Nanosheets. nanosheets most stable, flexible unif...

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