Kurum Yazarı "Ayhan, Hakan" İçin Listeleme
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Carrier free cross-linked peroxidase aggregates: synthesis and characterization
Topçular, Ceren; Ayhan, Hakan (2008)In this study, cross-linked Horseradish Peroxidase (HRP) aggregates were prepared. Bovin Serum Albumin (BSA), a proteic feeder, and glutaraldehyde, a bifunctional reactive, a crosslinker agent has also been used. The initial ... -
Chelating agent effect on the release of gentamicin from PEG-DA hydrogels
Sökmen, Nazlı; Bican, Ferah; Ayhan, Fatma; Ayhan, Hakan (2008)In this study, controlled drug release devices of poly(ethylene glycol-diacrylate) (PEG-DA) hydrogels were prepared by free radical UV polymerization. PEG-DAmacromere was cross-linked with different percentages of ethylene ... -
Design and construction of uniform glow discharge plasma system operating under atmospheric condition
Kocum, C.; Ayhan, Hakan (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, ... -
Effects of atmospheric plasma on the printability of wool fabrics
Özdoğan, Esen; Demir, Aslı; Karahan, H. Aylin; Ayhan, Hakan; Seventekin, Necdet (Ege Universitesi, 2009)This study is about environmentally safe pre-treatment for wool fabrics to improve their printability with acid dyes. Knitted wool fabrics treated with argon and air atmospheric plasma Were evaluated ill terms of printability. ... -
Effects of atmospheric plasma treatment on the dyeability of cotton fabrics by acid dyes
Karahan Toprakçı, Hatice Aylin; Özdoğan, Esen; Demir, Aslı; Ayhan, Hakan; Seventekin, Necdet (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 ... -
Effects of Atmospheric Pressure Plasma Treatments on Certain Properties of Cotton Fabrics
Karahan, Hatice Aylin; Özdoğan, E; Demir, Aslı; Ayhan, Hakan; Seventekin, N (Inst Chemical Fibres, 2009)In this study, air and argon atmospheric plasma were used for modifying some properties of bleached plain cotton fabrics. Certain physical properties such as pilling, thermal resistance, thermal conductivity, water vapour ... -
Gold nanoparticle synthesis and characterisation
Tabrizi, Amir; Ayhan, Fatma; Ayhan, Hakan (2009)The aim of this study is to synthesize and characterize gold nanoparticles. For this purpose, the reduction reaction between tetrachloroauric acid and sodium citrate was used. At the end of the reduction reaction, gold ... -
Homocysteine-BSA - affinity based biosensor design (vol 39, pg 383, 2014)
Ayhan, Fatma; Kaya, Gizem; Ayhan, Hakan (Turkish Biochem Soc, 2014) -
Homosistein-BSA-afinite temelli biyosensor tasarımı
Ayhan, Fatma; Kaya, Gizem; Ayhan, Hakan (2014)Amaç: Çalışmada, Kuartz Kristal Mikrodenge (QCM) sistemi kullanılarak piezoelektrik esaslı Homosistein biyoafinite sensörü ile Homosisteinin tayini ve tekrar kullanılabilirliğinin tespiti amaçlanmıştır.Metod: Gümüş sensör ... -
Improvement surface properties of polypropylene and polyester fabrics by glow discharge plasma system under atmospheric condition
Yaman, Necla; Özdoğan, Esen; Kocum, I. Cengiz; Ayhan, Hakan; Öktem, Tülin; Seventekin, Necdet (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 ... -
Photopolymerized poly(Ethylene glycol) diacrylate hydrogels for controlled release of ketoprofen
In this study, poly(ethylene glycol-diacrylate) (PEG-DA) hydrogels with two different concentrations, 30% and 50% w/w, were prepared by free radical polymerization method. Ethylene glycol dimethacrylate (EGDMA) and ... -
Plasma treatment of polypropylene fabric for improved dyeability with soluble textile dyestuff
Yaman, Necla; Özdoğan, Esen; Seventekin, Necdet; Ayhan, Hakan (Elsevier, 2009)The impact of plasma treatment parameters on the surface morphology, physical-chemical, and dyeing properties of polypropylene (PP) using anionic and cationic dyestuffs were investigated in this study. Argon plasma treatment ... -
Proteic feeder effect on glucose oxidase aggregates formation
İspirli Doğaç, Yasemin; Ayhan, Hakan (2008)In this study, it is aimed to prepare cross-linked glucose oxidase (GOD) aggregates by using different proteic feeders. Bovine serum albumin (BSA), gelatine and collagen were used separately as proteic feeders in the ... -
Quartz crystal piezo electrode surface modification for gold nano-particles immobilization
Ayhan, Fatma; Gülsu, Aydan; Ayhan, Hakan (2007)In this study silver electrode quartz crystal surfaces were cleaned and modified to immobilize gold nanoparticles. First, the crystal surfaces were cleaned and activated with sodium hydroxide, acetone and methanol. After ... -
Urease immobilized piezoelectric quartz crystal for urea conversion
In this study, the immobilization of the enzyme urease on the surface of the quartz crystal was reported. The layer growth on silver electrode resonator was monitored with QCM and the catalytic activity of the enzyme layer ...