نتایج جستجو برای: hyperchem

تعداد نتایج: 151  

Journal: :Journal of pharmaceutical and biomedical analysis 2005
Vimon Tantishaiyakul

Models predicting aqueous solubility of benzylamine salts were developed using multivariate partial least squares (PLS) and artificial neural network (ANN). Molecular descriptors, including binding energy (BE) and surface area of salts (SA), were calculated by the use of Hyperchem and ChemPlus QSAR programs for Windows. Other physicochemical properties, such as hydrogen acceptor for oxygen atom...

Journal: :Medicinal chemistry (Shariqah (United Arab Emirates)) 2013
Ali Shayanfar Saeed Ghasemi Somaieh Soltani Karim Asadpour-Zeynali Robert J Doerksen Abolghasem Jouyban

Farnesyltranseferase inhibitors (FTIs) are one of the most promising classes of anticancer agents, but though some compounds in this category are in clinical trials there are no marketed drugs in this class yet. Quantitative structure activity relationship (QSAR) models can be used for predicting the activity of FTI candidates in early stages of drug discovery. In this study 192 imidazole-conta...

2012
Omar Hamad Shihab Al-Obaidi

New binuclear Co(II) and Co(II) complexes of ONO tridentate heterocyclic Schiff base derived from 4-aminoantipyrine with salicylaldehyde have been synthesized and characterized on the bases of elemental analysis, UV-Vis., FT-IR, and also by aid of molar conductivity measurements, magnetic measurements, and melting points. It has been found that the Schiff bases with Cu(II) or Co(II) ion forming...

Journal: :Molecules 2017
Xiao Li Ning Li Zhenyu Sui Kaishun Bi Zuojing Li

Diterpenoid alkaloids are extracted from plants. These compounds have broad biological activities, including effects on the cardiovascular system, anti-inflammatory and analgesic actions, and anti-tumor activity. The anti-inflammatory activity was determined by carrageenan-induced rat paw edema and experimental trauma in rats. The number of studies focused on the determination, quantitation and...

Journal: :Bioinorganic Chemistry and Applications 2008
Zhu Zhi-Fei Ning Ting-Ting Xu Zu-Min Zhang Ge-Xin Ma Yan-He

Molecular dynamics simulation of the interaction between the Tenebrio molitor alpha-amylase and its inhibitor at different proportion of crystal water was carried out with OPLS force field by hyperchem 7.5 software. In the correlative study, the optimal temperature of wheat monomeric and dimeric protein inhibitors was from 273 K to 318 K. The the average temperature of experimentation is 289 K....

Journal: :Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 2007
Kobra Zarei Morteza Atabati Malihe Ebrahimi

Quantitative structure-property relationship (QSPR) studies based on artificial neural network (ANN) and wavelet neural network (WNN) techniques were carried out for the prediction of solvent polarity. Experimental S' values for 69 solvents were assembled. This set included saturated and unsaturated hydrocarbons, solvents containing halogen, cyano, nitro, amide, sulfide, mercapto, sulfone, phos...

2004
Nenad Ivanović Ivana Radisavljević Slobodan Bojanić Carlos Carreras

A considerable amount of research has been devoted to organic materials, which have found their use in numerous applications in micro and optoelectronics [1, 2]. Their properties depend essentially on the level of material order, the changes of transport and optical properties of ParaSexiPhenyl (PSP) [3] upon the ordering in the needle like crystals, being a striking example. As the unit cells ...

Journal: :iranian journal of pharmaceutical sciences 0
yashar sarbaz neuromuscular systems lab, biomedical engineering faculty, amirkabir university of technology, tehran, iran hossein babaei drug applied research center, tabriz university of medical sciences, tabriz 51664, iran, faculty of pharmacy, tabriz university of medical sciences, tabriz 51664, iran shahriar gharibzadeh neuromuscular systems lab, biomedical engineering faculty, amirkabir university of technology, tehran, iran farzad towhidkhah neuromuscular systems lab, biomedical engineering faculty, amirkabir university of technology, tehran, iran hamed osuli department of electrical engineering, sahand university of technology, tabriz, iran somaieh soltani kimia research institute, p.o. box 51665-171, tabriz, iran abolghasem jouyban

drug design is generally achieved through trial and error methods, which is a time and resource consuming process and novel methods are needed to improve it. mathematical modelling is one of the possible solutions to speed up this process. in this study, we have presented box-jenkins model, to predict the vasorelaxant activity (pec50) of a set of benzopyrane compounds. we used the hyperchem sof...

ژورنال: شیمی کاربردی 2009
رحمان حسین زاده

با وارد کردن حلقه های آروماتیک به سیستم [5.6.7] کین آرن ترکیب 7 به عنوان یک کین آرن کاملا" پایدار بدست آمد. وجود گروههای متیل در این ساختار حلالیت ترکیب را افزایش داده و شناسائی آن را به کمک روشهای اسپکتروسکوپی آسان نموده است. شناسائی این کین آرن جدید به کمک روشهای مختلف CHN, MS, NMR, UV, IR صورت گرفته است. طیف UV این ترکیب طول موج ماکزیموم در حدود 460 نانومتر را نشان می دهد که حدود 100 نانومتر...

F. Mollaamin L. Mahdavian M. Monajjemi N. Mangkorntong

The SnO2 films deposited from inorganic precursors via sol–gel dip coating method have been found to be highly sensitive to methanol and ethanol vapor. Three dimensional nano-structure materials have attracted the attention of many researches because the possibility to apply them for near future devices in sensors, catalysis and energy related. The sensitivity and selectivity of SnO2 (110) nano...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید