Güncel Gönderiler: Kimya Bölümü Koleksiyonu
Toplam kayıt 352, listelenen: 161-180
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An engineered second disulfide bond restricts lymphotactin/XCL1 to a chemokine-like conformation with XCR1 agonist activity
(Amer Chemical Soc, 2007)Chemokines adopt a conserved tertiary structure stabilized by two disulfide bridges and direct the migration of leukocytes. Lymphotactin (Ltn) is a unique chemokine in that it contains only one disulfide and exhibits ... -
Design and construction of uniform glow discharge plasma system operating under atmospheric condition
(Amer Inst Physics, 2007)The design of a uniform glow discharge plasma system operating without vacuum is presented. A full-bridge switching circuit was used to switch the transformers. The primary windings of transformers were connected in parallel, ... -
Synthesis and characterization of copper(II) and nickel(II) complexes of isonitrosoacetophenone 4-aminobenzoylhydrazone
(Polish Chemical Soc, 2007)Two types of copper complexes as well as an oximate bridged nickel complex with a new tridentate ligand containing a monoxime and hydrazone moieties have been prepared and characterized by elemental analyses, IR, H-1 NMR, ... -
Decolourization and removal of some organic compounds from olive mill wastewater by advanced oxidation processes and lime treatment
(Springer Heidelberg, 2007)Background. Olive mill wastewater (OMW) generated by the olive oil extracting industry is a major pollutant, because of its high organic load and phytotoxic and antibacterial phenolic compounds which resist biological ... -
Development of a microbial biosensor based on carbon nanotube (CNT) modified electrodes
(Elsevier Science Inc, 2007)Pseudomonas putida DSM 50026 cells were used as the biological component and the measurement was based on the respiratory activity of the cells estimated from electrochemical measurements. The cells were immobilised on ... -
Comparative studies for the determination of uranyl ion adsorption onto Interpenetrating Polymer Networks (IPNs)
(Springer, 2007)The adsorption of uranyl ions from aqueous solutions was studied by using three different measurement techniques. Results obtained by gamma-spectrometry, UV-visible spectrophotometry and gravimetry have been compared. It ... -
Examination of performance of glassy carbon paste electrode modified with gold nanoparticle and xanthine oxidase for xanthine and hypoxanthine detection
(Elsevier, 2007)A composite electrode was prepared by modifying glassy carbon microparticles with gold nanoparticles (Au-nps) and xanthine oxidase enzyme (XOD) for xanthine (X) and hypoxanthine (Hx) detection. After the optimization of ... -
Examination of the Electroanalytic Performance of Carbon Nanotube (CNT) Modified Carbon Paste Electrodes as Xanthine Biosensor Transducers
(Scientific Technical Research Council Turkey-Tubitak, 2008)The effect of multi-walled carbon nanotube (MWCNT) and single-wall carbon nanotube (SWCNT) on carbon paste electrode (CPE) electrochemical response was examined by introducing various portions of CNT into the CPE. The ... -
Synthesis of new azo dyes and copper(II) complexes derived from barbituric acid and 4-aminobenzoylhydrazone
(Scientific Technical Research Council Turkey-Tubitak, 2008)Four new azo dyes, L-1, L-2, L-3, and L-4, were prepared by linking benzaldehyde p-aminobenzoylhydrazone (3) and p-hydroxybenzaldehyede p-aminobenzoylhydrazone (4) to barbiturie acid and 1,3-dimethylbarbituric acid through ... -
Effects of atmospheric plasma treatment on the dyeability of cotton fabrics by acid dyes
(Blackwell Publishing, 2008)Cotton fabrics were treated with air and argon atmospheric plasma for surface activation. Activated surfaces were grafted with two different amine compounds: ethylenediamine and triethylenetetramine. Pretreated cotton was ... -
Adsorption of Cd(II) ions from aqueous solutions using activated carbon prepared from olive stone by ZnCl2 activation
(Elsevier Sci Ltd, 2008)This study is aimed to remove Cd(II) ions from aqueous solutions by adsorption. As adsorbent, activated carbon prepared from olive stone, an agricultural solid by-product was used. Different activating agent (ZnCl2) amounts ... -
Silica gel functionalized with 4-phenylacetophynone 4-aminobenzoylhydrazone: Synthesis of a new chelating matrix and its application as metal ion collector
(Elsevier Science Bv, 2008)The silica gel surface immobilized with 4-phenylacetophynone 4-aminobenzoylhydrazone (PAAH) after surface modification by 3-chloropropyltrimethoxysilane (CPTS). The modified silica gel was used for sorption of Cu(II), ... -
Interconversion between two unrelated protein folds in the lymphotactin native state
(Natl Acad Sciences, 2008)Proteins often have multiple functional states, which might not always be accommodated by a single fold. Lymphotactin (Ltn) adopts two distinct structures in equilibrium, one corresponding to the canonical chemokine fold ... -
Synthesis, characterization, and sorption properties of silica gel-immobilized Schiff base derivative
(Academic Press Inc Elsevier Science, 2008)Silica gel was derivatized with benzophenone 4-aminobenzoylhydrazone(BAH), a Schiff base derivative, after silanization of silica by 3-chloropropyltrimethoxysilane (CPTS) by using a reported method. Characterization of the ... -
Comparison of textile dyeing effluent adsorption on commercial activated carbon and activated carbon prepared from olive stone by ZnCl2 activation
(Elsevier, 2008)Adsorption of Remazol Red B on activated carbon prepared from olive stone and commercial activated carbon from aqueous solutions was compared. Different activating agent (ZnCl2) amounts and adsorbent particle size were ... -
The removal of lignin and phenol from paper mill effluents by electrocoagulation
(Academic Press Ltd- Elsevier Science Ltd, 2008)This study aims to investigate the treatment of paper mill effluents using electrocoagulation. Removal of lignin, phenol, chemical oxygen demand (COD) and biological oxygen demand (BOD) from paper mill effluents was ... -
Studies on the antioxidant activity of the essential oil and methanol extract of Marrubium globosum subsp globosum (lamiaceae) by three different chemical assays
(Elsevier Sci Ltd, 2008)This study is designed to examine the chemical composition and in vitro antioxidant activity of the essential oil and sub-fractions of the methanol extract of Marrubium globosum subsp. globosum. The GC and GC-MS analysis ... -
Evaluation of the antioxidant activity of four edible mushrooms from the Central Anatolia, Eskisehir-Turkey: Lactarius deterrimus, Suillus collitinus, Boletus edulis, Xerocomus chrysenteron
(Elsevier Sci Ltd, 2008)The methanolic extracts of Lactarills deterrimus, Suillus collitinus, Boletits edidis, Xcroconius chrysenteron were analyzed for their antioxidant activities in different test systems namely beta-carotene/linoleic acid, ... -
Antioxidant and anticholinesterase constituents of Salvia poculata
(Scientific Technical Research Council Turkey-Tubitak, 2009)Two triterpenoids, namely 2 alpha,3 alpha-dihydroxy-24-nor-4(23), 12-oleanadien-28-oic acid (1) and ursolic acid (2); 4. avonoids, namely 5-hydroxy-7,4'-dimethoxyflavone (3), cirsimaritin (4), eupatilin (5), and salvigenin ... -
Improvement surface properties of polypropylene and polyester fabrics by glow discharge plasma system under atmospheric condition
(Ege Univ, 2009)In order to raise wettability and to improve soil release of polyester (PES) and polypropylene (PP) woven fabrics, atmospheric pressure plasma were applied. In this study, argon and air plasma were used for modification ...
