نتایج جستجو برای: quantitative structure

تعداد نتایج: 1841163  

2003
R. Kaliszan

To relate structure and chromatographic retention an approach is needed that lacks the rigour of thermodynamics but which provides otherwise inaccessible information. Such an approach is a combination of detailed models with certain thermodynamic concepts. Linear free-energy relationships (LFER) may be regarded as linear relationships between the logarithms of the rate or equilibria constants f...

Journal: :Anticancer research 2014
Chiyako Shimada Yoshihiro Uesawa Mariko Ishihara Hajime Kagaya Taisei Kanamoto Shigemi Terakubo Hideki Nakashima Koichi Takao Takayuki Saito Yoshiaki Sugita Hiroshi Sakagami

BACKGROUND A total of 12 phenylpropanoid amides were subjected to quantitative structure-activity relationship (QSAR) analysis, based on their cytotoxicity, tumor selectivity and anti-HIV activity, in order to investigate on their biological activities. MATERIALS AND METHODS Cytotoxicity against four human oral squamous cell carcinoma (OSCC) cell lines and three human oral normal cells was de...

Journal: :Anticancer research 2015
Hiroshi Sakagami Yoshihiro Uesawa Mariko Ishihara Hajime Kagaya Taisei Kanamoto Shigemi Terakubo Hideki Nakashima Koichi Takao Yoshiaki Sugita

Eighteen oleoylamides were subjected to quantitative structure-activity relationship analysis based on their cytotoxicity, tumor selectivity and anti-HIV activity, in order to assess their biological activities. Cytotoxicity against four human oral squamous cell carcinoma (OSCC) cell lines and five human oral normal cells (gingival fibroblast, periodontal ligament fibroblast, pulp cell, oral ke...

2002
Karl W. Broman

We consider the problem of identifying the genetic loci (called quantitative trait loci (QTLs)) contributing to variation in a quantitative trait, with data on an experimental cross. A large number of different statistical approaches to this problem have been described; most make use of multiple tests of hypotheses, and many consider models allowing only a single QTL. We feel that the problem i...

Journal: :Bioinformatics 2009
Runqing Yang Xin Wang Jian Li Hong-Wen Deng

MOTIVATION In most quantitative trait locus (QTL) mapping studies, phenotypes are assumed to follow normal distributions. Deviations from this assumption may affect the accuracy of QTL detection and lead to detection of spurious QTLs. To improve the robustness of QTL mapping methods, we replaced the normal distribution for residuals in multiple interacting QTL models with the normal/independent...

2011
Salma Kammoun Jarraya Adam Ghorbel Ahmed Chaouachi Mohamed Hammami

In this paper, we propose a new approach, called RoadGuard, for Highway Control and Management System. RoadGuard is based on counting and tracking moving vehicles robustly. Our system copes with some challenges related to such application processing steps like shadow, ghost and occlusion. A new algorithm is proposed to detect and remove cast shadow. The occlusion and ghost problems are resolved...

2016
Zahra Hajimahdi Fatemeh Safizadeh Afshin Zarghi

Caspase-3 inhibitory activities of some 1, 2-benzisothiazol-3-one derivatives were modeled by quantitative structure-activity relationship (QSAR) using stepwise-multiple linear regression (SW-MLR) method. The built model was robust and predictive with correlation coefficient (R(2)) of 0.91 and 0.59 for training and test groups, respectively. The quality of the model was evaluated by leave-one o...

2007
N. Nikolova - Jeliazkova

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