نتایج جستجو برای: 4d qsar

تعداد نتایج: 16746  

Journal: :Journal of computational chemistry 2007
Sofie Van Damme Patrick Bultinck

A new computer program has been designed to build and analyze quantitative-structure activity relationship (QSAR) models through regression analysis. The user is provided with a range of regression and validation techniques. The emphasis of the program lies mainly in the validation of QSAR models in chemical applications. ARTE-QSAR produces an easy interpretable output from which the user can c...

2014
Stefano Cassani

Insubria QSAR PaDEL-Descriptor model for prediction of Esters toxicity in Daphnia magna 1.2.Other related models: E.Papa, F. Battaini, P.Gramatica. Ranking of aquatic toxicity of esters modelled by QSAR, Chemosphere (58), 2005, 559-570.[9] 1.3.Software coding the model: [1]PaDEL-Descriptor 2.18 A software to calculate molecular descriptors and fingerprints http://padel.nus.edu.sg/software/padel...

2015
Huiding Xie Lijun Chen Jianqiang Zhang Xiaoguang Xie Kaixiong Qiu Jijun Fu Habil. Mihai V. Putz

B-Raf kinase is an important target in treatment of cancers. In order to design and find potent B-Raf inhibitors (BRIs), 3D pharmacophore models were created using the Genetic Algorithm with Linear Assignment of Hypermolecular Alignment of Database (GALAHAD). The best pharmacophore model obtained which was used in effective alignment of the data set contains two acceptor atoms, three donor atom...

پایان نامه :دانشگاه آزاد اسلامی واحد کرمانشاه - دانشکده علوم انسانی 1394

اثر متقابل ژنوتیپ در محیط یک مشکل عمده در مطالعه صفات کمی است،این اثر تفسیر آزمایشات ژنتیکی و فرآیند انتخاب را پیچیده میکند.هدف از این تحقیق تعیین محل ژن های کنترل کننده سازگاری در گندم نان با استفاده از برآورد کننده های پایداری پارامتری و ناپارامتری میباشد.21 لاین جایگزین شده حاصل از والدین بهاره چینی (دریافت کننده) و شایان (دهنده) در یک طرح بلوک های کامل تصادفی با سه تکرار در سه محیط متفاوت (...

Journal: :Journal of chemical information and computer sciences 2004
Assia Kovatcheva Alexander Golbraikh Scott Oloff Yun-De Xiao Weifan Zheng Peter Wolschann Gerhard Buchbauer Alexander Tropsha

A combinatorial quantitative structure-activity relationships (Combi-QSAR) approach has been developed and applied to a data set of 98 ambergris fragrance compounds with complex stereochemistry. The Combi-QSAR approach explores all possible combinations of different independent descriptor collections and various individual correlation methods to obtain statistically significant models with high...

2013
Mukta Rani

Over the last 20 years, extensive QSAR studies establish an attractive approach to the elucidation of the modern drug chemistry. In the recent years, constant increase in the performance of hardware and software transformed quantitative structure activity relationship (QSAR) and quantitative structure property relationship (QSPR) into powerful and widely used model for the prediction of many bi...

2011
MANISH S. BHATIA PRAFULLA B. CHOUDHARI KUNDAN B. INGALE BANDU E. ZAREKAR

New 2,4-disubstituted 1,5-benzodiazepine derivatives containing different functional groups have been synthesized and screened for their antibacterial activity. The 2,4-disubstituted 1,5benzodiazepine derivatives were synthesized by reacting substituted chalcones synthesized using aldol condensation with o-phenylenediamine. QSAR studies of synthesized derivatives were performed. QSAR equation s...

1-[4-(2-Alkylaminoethoxy)phenylcarbonyl]-3,5-bis(arylidene)-4-piperidones are a novel class of potent cytotoxic agents. These compounds demonstrate low micromolar to submicromolar IC50 values against human Molt 4/C8 and CEM T-lymphocytes and murine leukemia L1210 cells. In this study, a comparative QSAR investigation was performed on a series of 3,5-bis(arylidene)-4-piperidones using different ...

Journal: :Bioorganic & medicinal chemistry 2000
R Ragno G R Marshall R Di Santo R Costi S Massa R Rompei M Artico

A number of known antifungal pyrrole derivatives and some newly synthesized compounds (5-33) were tested in vitro against Mycobacterium tuberculosis CIP 103471. The majority of tested compounds were efficient antimycobacterial agents showing MIC values ranging from 0.5 to 32 microg/mL. A 3-D-QSAR study has been performed on these pyrrole derivatives to correlate their chemical structures with t...

Journal: :SAR and QSAR in environmental research 2011
K Z Myint C Ma L Wang X-Q Xie

Quantitative structure-activity relationship (QSAR) studies are useful computational tools often used in drug discovery research and in many scientific disciplines. In this study, a robust fragment-similarity-based QSAR (FS-QSAR) algorithm was developed to correlate structures with biological activities by integrating fragment-based drug design concept and a multiple linear regression method. S...

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