Başlık için Kimya Bölümü listeleme
Toplam kayıt 209, listelenen: 142-161
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A simple flow injection spectrophotometric procedure for direct determination of copper(II) in environmental samples
(Chemical Publishing Co., 2014)A new simple, rapid and sensitive flow-injection spectrophotometric detection method has been developed for the on-line determination of copper(II) in environmental water samples. The method is based on the measurement of ... -
Simple, sensitive and reliable LC-DAD method of gemifloxacin determination in pharmaceutical dosage forms
(2012)A sensitive, accurate, rapid, fully validated, reliable and easy method was developed for the quantification of gemifloxacin mesylate (GEM) using liquid chromatography (LC) with DAD detection. In this method; a reversed-phase ... -
Simultaneous determination and validation of emtricitabine, rilpivirine and tenofovir from biological samples using LC and CE methods
(John Wiley and Sons Ltd, 2018)A combination of antiretroviral agents is frequently used in effective treatment of the human immunodeficiency virus infection. In this study, two different separation methods are presented for the simultaneous determination ... -
Simultaneous determination and validation of some binary mixtures of antihypertensive drugs using ratio derivative spectrophotometric method
(Maik Nauka Publishing / Springer SBM, 2014)Ratio derivative spectrophotometric technique is presented for the rapid, accurate and precise simultaneous determination of olmesartan medoxomil (OLM), hydrochlorothiazide (HCT), and zofenopril (ZOF) as well as HCT binary ... -
Simultaneous determination of amlodipine besylate and rosuvastatin calcium in binary mixtures by voltammetric and chromatographic techniques
(Institute for Ionics, 2016)Voltammetric and liquid chromatographic (LC) methods have been developed for the simultaneous determination of amlodipine besylate (AML) and rosuvastatin calcium (ROS) for the first time. Detailed electrochemical behavior ... -
Simultaneous determination of three phenolic compounds in water samples by pre-column derivatization coupled with reversed-phase high performance liquid chromatography
(Hacettepe University, 2018)In this study, a sensitive and accurate method for simultaneous separation and determination of three phenolic compounds (phenol, m-cresol and resorcinol) in water by revesed-phase high performance liquid chromatography ... -
Simultaneous estimation and validation of some binary mixtures of antihypertensive drugs by RP-LC methods using two new generation silica columns
(Elsevier B.V., 2013)Two reversed phase liquid chromatographic (RP-LC) techniques are presented for the rapid, accurate, precise, simultaneous determination of olmesartan-hydrochlorothiazide and zofenopril-hydrochlorothiazide binary mixtures ... -
Simultaneous estimation of ceftazidime and ceftizoxime in pharmaceutical formulations by HPLC method
(2011)The aim of the present study was to develop a fast, sensitive and reliable method for rapid screening of cephalosporin injectable dosage forms namely ceftazidime and ceftizoxime to the detection of counterfeit and substandard ... -
Solvent effect on endosulfan adsorption onto polymeric arginine-methacrylate cryogels
(Springer Verlag, 2018)Endosulfan is a persistent insecticide that is still used in some countries even though it is life-threatening and banned in the agricultural struggle. The solubility of pesticides in water is negligible. It is known that ... -
Solvent effects on pKa values of some substituted sulfonamides in acetonitrile-water binary mixtures by the UV-spectroscopy method
(2009)The examination of the dissociation constants of sulfonamides is essential in drug-design studies and in explaining the biopharmaceutical properties of substances. The dissociation constants of ten common human and veterinary ... -
Spectrophotometric determination of acidity constants of some macrolides in acetonitrile-water binary mixtures
(2010)The acidity constants of eight macrolides (erythromycin, roxithromycin, oleandomycin, azithromycin, josamycin, tylosin tartrate, tilmicosin and spiramycin) have been determined in acetonitrile-water binary mixtures (30%, ... -
Spectrophotometric determination of acidity constants of some novel methotrexate-like compounds in water and acetonitrile-water binary mixtures
(2010)The acidity constants of four novel methotrexate like compounds (NPALA; (N-[4-[[2-hydroxy -1-naphtyl)methylene]amino]benzoyl-?-alanin) TPALA; (N-[4-(2-thiophene-aldiminobenzoyl)-?-alanin), SAL-ALA; N-[4-[[2-hydroxyphenyl ... -
Spectroscopic and thermal properties of newly mixed azocalix[4]arene ester derivatives
(Elsevier B.V., 2014)The mono-, di-, tri-, and tetra-acryloyl esters of p-chloroazocalix[4]arene which include the first examples of mixed azo ester dyes were synthesized by reacting acryloyl chloride with sodium salts of p-chloroazocalix[4]arene ... -
Spectroscopic properties of 2,2’-[Thiobis(p-phenylenenitrilo-methylidyne)]bis(4-chloro/bromo/methyl/nitro/methoxy)phenol
(Hacettepe University, 2012)Novel Schiff base has been synthesized from the reaction of 4,4’-diaminodiphenyl sulfide with 2-hydroxy5-substituebenzaldehyde and 2-hydroxynaphtaldehyde. The compounds were characterized by elemental analysis, FT-IR, 1 H ... -
Spectroscopic, antiproliferative and antiradical properties of Cu(II), Ni(II), and Zn(II) complexes with amino acid based Schiff bases
(Birkhauser Boston, 2014)Novel six Cu(II), Ni(II), and Zn(II) complexes with Schiff bases derived from 4-aminobenzoic acid with terephtaldehyde and amino acids (glycine, ?-alanine). Structures have been proposed from elemental analysis, UV-Vis, ... -
The structural and thermal characterization of new Cu-Arginate complex; experimental and simulated hydrogen adsorbstion properties
(Hitit University, 2016)The copper-arginate complex was synthesized and characterized by using FTIR, TG/DTA-DrTG, UV-Vis spectroscopy and elemental analysis methods. In addition, experimental and theoretical hydrogen storage capabilities were ... -
Structural and thermal studies of non-metal cation pentaborate salts with cations derived from 1,5-diazobicyclo[4.3.0]non-5-ene, 1,8-diazobicyclo[5.4.0] undec-7-ene and 1,8-bis(dimethylamino)naphthalene
(Elsevier B.V., 2012)The reaction of the cyclic amines 1,5-diazobicyclo[4.3.0]non-5-ene (DBN), 1,8-diazobicyclo[5.4.0]undec-7-ene (DBU) and 1,8-bis(dimethylamino)naphthalene (PS) with B(OH)3 in a 1:5 ratio affords in high yields the non-metal ... -
Structural, absorption, and molecular properties of o,o'-dihydroxyazo resorcinol dyes bearing an acryloyloxy group
(Elsevier B.V., 2017)To the best of our knowledge, this is the first study reporting the synthesis and characterization of o,o?-dihydroxyazo dyes bearing an acryloyl group. The o,o?-dihydroxyazo dyes were synthesized through coupling of ... -
Study of asymmetric aldol and Mannich reactions catalyzed by proline-thiourea host-guest complexes in nonpolar solvents
(2013)A proline-thiourea host-guest complex has been described as a good catalyst for asymmetric reactions such as aldol and Mannich reactions. High stereoselectivities were obtained under optimal conditions. Thiourea was observed ... -
Study of structural, surface and hydrogen storage properties of boric acid mediated metal (sodium)-organic frameworks
(Elsevier B.V., 2018)Three boric acid mediated metal organic frameworks were synthesized by solution method with using succinic acid, fumaric acid and acetylene dicarboxylic acid as a ligand source and sodium as a metal source. The complexes ...