Güncel Gönderiler: Kimya Bölümü
Toplam kayıt 724, listelenen: 501-520
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Chemometric evaluation of trace metal concentrations in some nuts and see
(Taylor & Francis Ltd, 2014)Seventeen trace metals in acid digests of nuts and seeds were determined using inductively coupled plasma-atomic emission spectrometry and inductively coupled plasma-mass spectrometry. The data were subjected to chemometric ... -
A new affinity method for purification of bovine testicular hyaluronidase enzyme and an investigation of the effects of some compounds on this enzyme
(Taylor & Francis Ltd, 2015)In this study, a new affinity gel for the purification of bovine testicular hyaluronidase (BTH) was synthesized. L-Tyrosine was added as the extension arm to the Sepharose-4B activated with cyanogen bromide. m-Anisidine ... -
Combining ab initio calculations and Fourier-transform infrared (FT-IR) spectroscopy for quantitative analysis of multicomponent systems in solution: Tautomer proportions of ethyl acetoacetate
(Elsevier Science Bv, 2014)A quantitative analysis method, combined experimental computational approach (CECA), has been developed and applied for the detection of tautomer ratios of ethyl acetoacetate (eaa) in three organic solvents (acetonitrile, ... -
Experimental and theoretical investigation of a novel mononuclear copper(II) azido compound with tridentate (NNO) schiff base
(Elsevier Science BV, 2015)The tridentate (NNO) Schiff base (HL), has been prepared by the condensation of 2-(aminomethyl)pyridine with 5-chloro-salicylaldehyde. The mononuclear [N-(2-pyridylmethyl)-3-chloro-salicylaldiminato] (azido) copper(II) ... -
A simple spectrophotometric method for the determination of trace levels of molybdenum using n,n '-bis(2-hydroxy-5-bromo-benzyl)1,2 diaminopropane
(Pergamon-Elsevier Science Ltd, 2015)The present work describes a selective, rapid and economical spectrophotometric method for the determination of molybdenum using N,N'-bis(2-hydroxy-5-bromo-benzyl)1,2 diaminopropane. Molybdenum(VI) reacts with N,N'-bis(2 ... -
The effects of ex vivo ozone treatment on erythrocyte carbonic anhydrase enzyme
(Wiley-Blackwell, 2015)AIM: Medical ozone generates beneficial effects by stimulating the endogenous antioxidant systems. Carbonic anhydrases (CAs, EC 4.2.1.1.) are metalloenzymes and play a significant role in acid-base regulation. The aim of ... -
Potentiometric determination of the dissociation constant of benzoic acid in aqueous ethanol solvents and investigation of effect of solvent and inorganic salts on spectroscopic properties of benzoic acid solutions by UV absorbance spectroscopy
(Asian Journal of Chemistry, 2004)The dissociation constants of benzoic acid has been determined at 25 degreesC and an ionic strength of 5 mmol L-1 in water and mixed aqueous solutions of ethanol (0.5-5%) by potentiometric measurements. A linear relationship ... -
Dissolution kinetics of colemanite in oxalic acid solutions
(Elsevier Science Bv, 2004)Colemanite is one of the most important underground riches of Turkey, having approximately 60% of the world boron deposits, and it has a large portion in the deposits. When colemanite having a 2CaO(.)3B(2)O(3)(.)5H(2)O ... -
In vitro effects of estrogen and progesterone containing drugs on human erythrocyte carbonic anhydrase I and II isozymes in women smokers and nonsmokers
(Elsevier Taiwan, 2015)Background: Carbonic anhydrases (CAs), a group of metalloenzymes, are involved in numerous physiological and pathological processes such as acid base balance, gluconeogenesis, lipogenesis, ureagenesis, electrolyte secretion ... -
Kinetics and mechanism of removal of methylene blue by adsorption onto perlite
(Elsevier Science Bv, 2004)The kinetics and mechanism of methylene blue adsorption on perlite have been studied. The effects of various experimental parameters, such as initial dye concentration, temperature and pH on the adsorption rate were ... -
In vitro inhibition effects of some new sulfonamide inhibitors on human carbonic anhydrase I and II
(Taylor & Francis Ltd, 2004)A new series of aromatic and heterocyclic sulfonamides, including six new derivatives, 2-(3-cyclohexene-1-carbamido)-1,3,4-thiadiazole-5-sulfonamide (CCTS), 4-(3-cyclohexene-1-carbamido) methyl-benzenesulfonamide (CCBS), ... -
Polarizabilities and dipole moments of benzaldehyde, benzoic acid and oxalic acid in polar and nonpolar solvents
(Elsevier Science Bv, 2004)The purpose of this report is to calculate the orientation polarizability of benzaldehyde, benzoic acid and oxalic acid in polar and nonpolar solvents. The calculations are based on the knowledge of permanent dipole moment ... -
Complexation and mutagenicity potential studies with N,N '-bis(2-hydroxynaphthalin-1-carbaldehydene)-1,2-bis-(P-aminophenoxy)ethane and a novel oxovanadium(IV) complex
(Taylor & Francis Ltd, 2004)A new oxovanadium(IV) complex of the Schiff base obtained by condensation of 1,2-bis(p-aminophenoxy)ethane with 2-hydroxynaphthalin-1-carbaldehyde was synthesized. The complex was characterized by elemental analysis, ... -
In vitro inhibition effects of some coumarin derivatives on human erythrocytes glucose-6-phosphate dehydrogenase activities
(Taylor & Francıs Ltd, 2014)Inhibitory effects of some synthesized dihydroxycoumarin compounds on purified G6PD were investigated. For this purpose, initially human erythrocyte G6PD was purified 7069-fold in a yield of 33.6% by using ammonium sulfate ... -
Study of the thermal decompositions on N,N-dialkyl-N '-benzoylthiourea complexes of Cu(II), Ni(II), Pd(II), Pt(II), Cd(II), Ru(III) and Fe(III)
(Kluwer Academic Publ, 1999)The thermal decompositions of the complexes of N,N-dialkyl-N'-benzoylthioureas with Cu(II), Ni(II), Pd(II), Pt(II), Cd(II), Ru(III) and Fe(III) were studied by TG and DTA techniques. These metal complexes decompose in two ... -
Estimation of association constants of macrocyclic ethers by potentiometry. Part V. Na+ binding in dioxane/water (80/20)
(Taylor & Francis Ltd, 2004)The various association constants, beta(nm) and K-nm, of NaCl and NaClO4 with [12]crown-4, [15]crown-5, [18]crown-6, benzo[15]crown-5, benzo[12]crown-4, dibenzo[18]crown-6 and dinaphtho[18]crown-6 have been estimated in a ... -
Synthesis and characterization of a novel oxovanadium(IV) complex and conductometric studies with N,N '-bis(salicylidene)-1,2-bis-(p-aminophenoxy)ethane
(Marcel Dekker Inc, 2004)A new oxovanadium complex of the Schiff base obtained by the condensation of 1,2-bis(p-aminophenoxy)ethane with salicylaldehyde was synthesized. The complex has been characterized by elemental analyses, magnetic measurements, ... -
Dissolution Kinetics and Mechanism of Ulexite in Oxalic Acid Solutions
(Amer Chemical Soc, 2004)The dissolution rates of ulexite in oxalic acid solutions were investigated statistically and graphically using homogeneous and heterogeneous reaction models at different stirring speeds, particle sizes, acid concentrations, ... -
Fractionation analysis of magnesium in olive products by atomic absorption spectrometry
(Elsevier Science Bv, 2004)A scheme is presented for fractionation of olive components and magnesium determinations in different fractions. The charge of metal species was established using cation exchange with Dowex 50Wx8-40. The resin Amberlite ... -
Synthesis of some 3-phenyl chromenone-crown ethers and equilibrium studies on complexation with ion-pair extraction of sodium and potassium dyes
(Elsevier Science Bv, 2004)6,7-Dihydroxy-3-phenyl-2H-chromenones and 7,8-dihydroxy-3-(methoxyphenyl)-2H-chromenones, o-dihydroxy-3-phenylcoumarins, were prepared from phenylacetic acid/2,4,5-trihydroxybenzaldehyde, methoxyphenylacetic acid/2,3,4-t ...
