Güncel Gönderiler: Kimya Bölümü
Toplam kayıt 202, listelenen: 81-100
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Separation and Preconcentration of Cobalt Using a New Schiff Base Derivative on Amberlite XAD-7
(WILEY-V C H VERLAG GMBH, 2010)In this study, a new solid-phase extraction procedure has been developed for preconcentration and determination of Co ions in different water samples by flame atomic absorption spectrometry (FAAS). Cobalt was preconcentrated ... -
Electrochemical and Spectrophotometric Methods to Assay of Risperidone an Antipsychotic Drug in Pharmaceutical and Biological Samples
(ASIAN JOURNAL OF CHEMISTRY, 2010)The electrochemical behaviour of risperidone and its quantitative determination was investigated using voltammetric and spectrophotometric methods. The diffusion coefficient and number of transferred electrons were calculated ... -
Separation and solid phase extraction method for the determination of cadmium in environmental samples
(ELSEVIER SCIENCE BV, 2010)A solid phase extraction method was developed for the determination, preconcentration and separation of cadmium. The method is based on the adsorption of cadmium as 4-(2-pyridylazo) resorcinol (PAR) complex on Duolite ... -
Chromatographic Determination of Stabilizer in Nitrocellulose Based Propellants (A new extraction based chromatographic method for the determination of stabilizers in propellants)
(INST INDUSTRIAL ORGANIC CHEMISTRY, 2011)Regarding the chromatographic analysis of the stabilizers in the double based propellants, nitrocellulose causes an interference problem with diphenylamine and its derivatives. In this study, specific extraction of the ... -
A New Voltammetric Method for the Determination of Lercanidipine in Biological Samples
(SLOVENSKO KEMIJSKO DRUSTVO, 2011)Electrochemical behavior and adsorption-diffusion properties of lercanidipine (LCN) on a glassy carbon electrode (GCE) were investigated in a mixture of ethanol-Britton Robinson buffer (BR) using voltammetric methods. From ... -
New Energetic Copper(II) Complexes With Pyrazolyl Type Ligands
(WILEY-V C H VERLAG GMBH, 2011)Nine Cu-II complexes (I-IX) containing the azide ion and bis-2,6-(pyrazol-1-yl)pyridine (pp), bis-2,6-(pyrazol-1-yl)pyridine (dmpp), and 2-(pyrazol-1-yl)-6-(3,5-dirnethylpyrazol-1-yl)pyridine (mpp), which are derivatives ... -
Preparation of amidoximated poly(glycidyl methacrylate) microbeads
(JOHN WILEY & SONS LTD, 2011)Poly(glycidyl methacrylate) (PGMA) microbeads were synthesized by a simple suspension polymerization of glycidyl methacrylate and ethylene glycol dimethacrylate. The epoxy groups of the microbeads were firstly modified ... -
Multı-Element Determınatıon Of Macro And Trace Elements In Kıdney Of Dmba And Lınalool Applıed Guınea Pıgs By Inductıvely-Coupled Plasma Atomıc Emıssıon Spectrometry (Icp-Aes)
(PARLAR SCIENTIFIC PUBLICATIONS (P S P), 2011)Determination of trace elements in biological samples is important because of their vital role in metabolism, health and oxidative stress. Oxidative stress is caused by reactive oxygen species, depending on many factors ... -
SQUARE-WAVE CATHODIC ADSORPTIVE STRIPPING VOLTAMMETRY OF RISPERIDONE
(INST ORGANIC CHEM AND BIOCHEM, 2011)Electrochemical properties and diffusion-adsorption behavior of risperidone (RPN), an anti-physcotic drug, on hanging mercury drop electrode (HMDE) were carried out in Britton-Robinson (BR) buffer. Some electrochemical ... -
ELECTROCHEMICAL BEHAVIOR OF MOCLOBEMIDE AT MERCURY AND GLASSY CARBON ELECTRODES AND VOLTAMMETRIC METHODS FOR ITS DETERMINATION
(INST ORGANIC CHEM AND BIOCHEM, 2011)Electrochemical oxidation and reduction properties of Moclobemide (MCB) were investigated at glassy carbon electrode (GCE) and hanging mercury drop electrode (HMDE). Diffusion-adsorption behavior and some extra electrochemical ... -
Stereoselective synthesis of deoxycarbaheptopyranose derivatives: 5a-carba-6-deoxy-alpha-DL-galacto-heptopyranose and 5a-carba-6-deoxy-alpha-DL-gulo-heptopyranose
(PERGAMON-ELSEVIER SCIENCE LTD, 2011)Two new deoxycarbaheptopyranoses, 5a-carba-6-deoxy-alpha-DL-galacto-heptopyranose and 5a-carba-6-deoxy-alpha-DL-gulo-heptopyranose were prepared starting from cyclohexa-1,4-diene. The addition of dichloroketene to ... -
Synthesis of Cationic N-[3-(Dimethylamino)propyl]methacrylamide Brushes on Silicon Wafer via Surface-Initiated RAFT Polymerization
(WILEY, 2011)Surface-initiated reversible addition-fragmentation chain transfer (SI-RAFT) polymerization of N-[3-(dimethylamino)propyl]methacrylamide (DMAPMA) on the silicon wafer was conducted in attempt to create controllable cationic ... -
Changes in intracellular protein expression in cortex., thalamus and hippocampus in a genetic rat model of absence epilepsy
(PERGAMON-ELSEVIER SCIENCE LTD, 2011)Epilepsy is a chronic disorder characterized by repeated seizures resulting from abnormal activation of neurons in the brain. Although mutations in genes related to Na+, K+, Ca2+ channels have been defined, few studies ... -
Solvent-Free Synthesis of Chiral Schiff-Base Ligands Based on Ferrocene under Microwave Irradiation and Application to Enantioselective Nitroaldol (Henry) Reaction
(WILEY-BLACKWELL, 2011)Chiral Schiff-bases 3a-f based on ferrocene were designed and synthesized using solvent-free methods by mixing ferrocene carbaldehyde 1 with amino alcohols and amines 2a-f under microwave irradiation and classical method ... -
DEVELOPMENT OF A NEW ENRICHMENT METHOD FOR SIMULTANEOUS DETERMINATION OF COPPER AND ZINC IN WATER SAMPLES
(WILEY-BLACKWELL, 2011)In the present study, an enrichment and separation method for the simultaneous determination of trace amounts of Cu and Zn in water samples was developed. Copper and Zn ions found in water matrix in trace amounts were ... -
DFT, FT-IR, FT-Raman and NMR studies of 4-(substituted phenylazo)-3,5-diacetamido-1H-pyrazoles
(ELSEVIER SCIENCE BV, 2011)We present a detailed analysis of the structural and vibrational spectra of some novel azo dyes. 2-(Substituted phenylazo)malononitriles were synthesized by the coupling reaction of the diazonium salts, which were prepared ... -
A novel class of compounds: synthesis of 5,5 '-carbonyl-bis(5,6-dihydro-4H-furo- and thieno-[2,3-c]pyrrol-4-ones)
(PERGAMON-ELSEVIER SCIENCE LTD, 2011)We hereby report the first synthesis of novel class of compounds, 5,5'-carbonyl-bis(5,6-dihydro-4H-thieno- and furo-[2,3-c]pyrrol-4-one starting from methyl 2-(2-methoxy-2-oxoethyl) thiophene- and furan-3-carboxylate, ... -
Preconcentration of Aluminum on Nano ZrO2/B2O3 and Its Determination by Flame Atomic Absorption Spectrometry
(TAYLOR & FRANCIS INC, 2012)This study presents a chelating agent free solid phase extraction method for preconcentration of Al(III) using hybrid nano zirconium dioxide-boron oxide (ZrO2/B2O3) sorbent. This method is based on the sorption of Al(III) ... -
Synthesis and biological evaluation of optically active conjugated gamma- and delta-lactone derivatives
(PERGAMON-ELSEVIER SCIENCE LTD, 2012)An efficient synthesis of racemic and both enantiomeric forms of heteroaryl substituted gamma- and delta-lactone derivatives derived from allyl and homoallyl alcohol backbones has been accomplished via ring closing metathesis ... -
Chemical Changes in Leaves of Corn and Bean Plants Exposed to Simulated Acid Rain
(CHEM SOC PAKISTAN, 2012)In this study, the effects of simulated acid rain on vitamin E, vitamin D-2 and fatty acids levels of corn and bean leaves were investigated. It was determined that the level of palmitoleic acid (C16:1) increased in ...
