Güncel Gönderiler: Kimya-Makale Koleksiyonu
Toplam kayıt 678, listelenen: 261-280
-
Is there a relation between genetic susceptibility with cancer? A study about paraoxanase (PON1) enzyme activity in breast cancer cases
(Taylor & Francis Ltd., 2016)Human serum paraoxonase 1 (PON1, EC 3.1.1.2) is a high density lipoprotein (HDL)-associated antioxidant enzyme that not only decreases oxidative stress, but it is also implicated in development of many cancers. Genetic ... -
Inhibition kinetic and mechanism of polyphenol oxidase from various sources by diethyldithiocarbamic acid
(Wiley-Blackwell, 2008)Inhibition kinetics and mechanism of polyphenol oxidases (PPO) partially purified from various sources such as Thymbra spicata L. var. spicata and Ocimum basilicum L., and of mushroom PPO bought from Sigma by diethyldithiocarbamic ... -
Biosorption of methylene blue from aqueous solutions by hazelnut shells: Equilibrium, parameters and isotherms
(Springer, 2008)This paper presents a study on the batch adsorption of a basic dye, methylene blue (MB), from aqueous solution onto ground hazelnut shell in order to explore its potential use as a low-cost adsorbent for wastewater dye ... -
The effect of sodium tetraborate on antioxidant enzymes under in vitro conditions
(Parlar Scientific Publications (P S P),, 2014)Herein, the effects of sodium tetraborate on antioxidant enzyme activities from human blood cells under in vitro conditions were studied. Red blood cells were exposed to different concentrations of sodium tetraborate. ... -
Synthesis, structure-activity relationships and biological activity of new isatin derivatives as tyrosinase ınhibitors
(Bentham Science Publ Ltd, 2014)A newly series of isatin derivatives (6a-t) containing alkyl/aryl urea groups were synthesized and their inhibitory effects on the diphenolase activity of banana tyrosinase were evaluated. Tyrosinase was purified from ... -
Adsorption kinetics and mechanism of maxilon blue 5G dye on sepiolite from aqueous solutions
(Elsevier Science Sa, 2008)The use of sepiolite for the removal of maxilon blue 5G from aqueous solutions at different contact times, stirring speeds, initial dye concentrations, pHs, ionic strengths and temperatures was investigated. The adsorption ... -
Synthesis and in vitro inhibition effect of new pyrido[2,3-d] pyrimidine derivatives on erythrocyte carbonic anhydrase i and ii
(Hindawi Publishing Corporation, 2014)In vitro inhibition effects of indolylchalcones and new pyrido[2,3-d] pyrimidine derivatives on purified human carbonic anhydrase I and II (hCA I and II) were investigated by using CO2 as a substrate. The results showed ... -
Determination of copper(II) in natural waters by extraction using n-o-vanillidine-2-amino-p-cresol and flame atomic absorption spectrometry
(Taylor & Francis Inc, 2014)A simple and accurate solvent extraction method was developed for the separation and preconcentration of trace levels of copper(II) in water using N-o-vanillidine-2-amino-p-cresol prior to its determination using flame ... -
Characterization of polyphenoloxidase from wild pear (Pyrus elaegrifolia)
(Wiley, 2008)Wild pear polyphenoloxidase (PePPO) was extracted and purified using a Sepharose 4B-L-tyrosine-p-amino benzoic acid affinity column. Optimum conditions for pH, temperature and heat inactivation were determined. At the ... -
Differential in vitro inhibitory effects of anticancer drugs on tumor-associated carbonic anhydrase isozymes CA IX and CA XII
(Prous Science, 2008)Carbonic anhydrase IX (CA IX) and, to a lesser extent. carbonic anhydrase XII (CA XII) are highly overexpressed in hypoxic tumors. In this study, the inhibitory effects of 11 different anticancer drugs including paclitaxel, ... -
Removal of copper ions from aqueous solutions by hazelnut shell
(Elsevier Science Bv, 2008)There is a great potential of woody hazelnut shell to use in some applications. Sorption studies are one of these. For this reason in this paper, batch adsorption of Cu2+ ions onto hazelnut shells was studied. The capacity ... -
Removal of copper ions from aqueous solutions by kaolinite and batch design
(Elsevier Science Bv, 2008)The removal of copper ions from aqueous solutions by kaolinite was investigated by using a batch-type method. Effects of factors such as pH, ionic strength, temperature, acid-activation and calcination on copper adsorption ... -
Adsorptive cathodic stripping voltammetric determination of antimony in the presence of copper and bismuth by using hematoxylin
(Parlar Scientific Publications (P S P),, 2014)This study describes a new adsorptive cathodic stripping voltammetric method using hematoxylin as complexing reagent for determination of antimony in the presence of Cu(II) and Bi(III). The method is based on the accumulation ... -
In vitro inhibition effect of some coumarin compounds on purified human serum paraoxonase 1 (PON1)
(Taylor & Francis Inc, 2016)Human serum paraoxonase 1 (PON1; EC 3.1.8.1) is a high-density lipoprotein associated, calcium-dependent enzyme that hydrolyses aromatic esters, organophosphates and lactones and can protect the low-density lipoprotein ... -
Coumarin or benzoxazinone based novel carbonic anhydrase inhibitors: synthesis, molecular docking and anticonvulsant studies
(Taylor & Francis Inc, 2016)Among many others, coumarin derivatives are known to show human carbonic anhydrase (hCA) inhibitory activity. Since hCA inhibition is one of the underlying mechanisms that account for the activities of some antiepileptic ... -
Acid modified diatomaceous earth - A sorbent material for thin layer chromatography
(Preston Publ Inc, 2008)Natural diatomaceous earth (DE) is modified by flux calcination and refluxing with acid. To characterize natural DE, modified DE’s [flux calcinated (FC)DE and FCDE-I] and silica gel 60GF254 (Si-60GF254) are analyzed ... -
Phthalimide thin film for methanol vapor detection
(Amer Scientific Publishers, 2008)The thin film and sensing properties of a novel (N-phthalimido)-p-aminobenzoic acid (FIABA) compound against methanol vapor is investigated using Atomic Force Microscopy (AFM) and Surface Plasmon Resonance (SPR). AFM results ... -
Element fractionation analysis for infant formula and food additives by inductively coupled plasma optical emission spectrometry
(Wiley, 2014)Fractionation analyses are essential to investigate the effects of dietary constituents on bioavailability of elements. A sequential separation procedure has been applied for elemental fractionation patterns in infant ... -
Synthesis and crystal structure of dicobalt nickel orthoborate, Co2Ni(BO3)(2)
(Elsevier Science Sa, 2008)A new binary metal borate compound, dicobalt nickel orthoborate, Co2Ni(BO3)(2) has been successfully synthesized by thermally-induced solid-state chemical reaction at 900 degrees C between the initial reactants of ... -
Flow injection determination of aluminium by spectrofluorimetric detection after complexation with N-o-vanillidine-2-amino-p-cresol: The application to natural waters
(Elsevier Science Bv, 2008)An on-line flow injection spectrofluorimetric method for the direct determination of aluminium in water samples is described. The method is based on the reaction of aluminium with N-o-vanillidine-2-amino-p-cresol (OVAC) ...
