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TAŞÇI, Filiz | SAYIN, Serkan | AĞ SELECİ, Didem | DEMİR, Bilal | AZAK, Hacer | YILDIZ, Hüseyin Bekir | ODACI DEMİRKOL, Dilek | TİMUR, Suna
Aim: The development of calixarene based phenol biosensor. Methods: This study describes the application of a calixarene derivative, 5,17-diamino-25,27-bis(3-thiol-1-oxypropane)-26,28-dihydroxycalix[4]arene (HS-Calix-NH2) which has both amino and thiol functionalities, in the practical surface modifications for biomolecule binding. The structure of HS-Calix-NH2 allows easy inter-action with Au surface and one-step biomolecule immo-bilization. Self-assembled monolayers (SAMs) of p-amino-functionalized mercaptoalkylcalixarene (HS-Calix-NH2) were formed onto the Au electrode. Then, Laccase (Lac) ...Daha fazlası
ÇEVİK, Emre | CERİT, Alaaddin | TOMBULOĞLU, Hüseyin | SABİT, Hussein | YILDIZ, Hüseyin Bekir
The fabrication of amperometric biosensors based on whole cell Gluconobacter oxydans DSMZ 2343 (G. oxydans) and glucose oxidase (GOx) was performed for the detection of glucose. Glassy carbon electrodes (GCE) were coated with a 10-(4H-dithiyeno [3,2-b:2’,3’-d]pyroll-4-il)decan-1-amine (DTP-alkyl-NH2) polymer using an electropolymerization method and the formed interface was used to connect the bacteria and the enzyme to the electrode. The transfer of electrons from enzyme to electrode was successfully demonstrated by the biocatalytic activity and unique morphology of the conducting polymer. Ch ...Daha fazlası
AZAK, Hacer | YILDIZ, Hüseyin Bekir | ÇARBAŞ, Buket
Synthesis and electropolymerization of a new conjugated dithieno(3,2-b:20,30-d) pyrole (DTP) derivative, namely, 2-(2-(2-(4H-dithieno[3,2-b:20,30-d]pyrrol-4-yl)ethoxy)ethoxy)ethanamine, (DTP-alkoxy-NH2) monomer are presented. The electrochemical, spectroelectrochemical effects and biosensor capability towards to glucose oxidase enzyme of P(DTP-alkoxy-NH2) polymer fi lm are investigated in detail during the placement of alkoxy-NH2 functional unit in the polymer. Electrochemical and optical results between neutral and oxidized states of the polymer fi lm show that (P(DTP-alkoxy-NH2)) has reversibl ...Daha fazlası
TEKİN, Mustafa | TAŞLIÇAY, Cengizhan | MUHAFFEL, Faiz | ÇİMENOĞLU, Hüseyin
In the present study, wear and corrosion resistances of magnesium alloys are analyzed after coated by micro arc oxidation (MAO) process for protection of gear component, which is the most wearing part of a bicycle. Two of the most common magnesium alloys (AZ31 and AZ91) were used in the study and they were oxidized in three different electrolytes (aluminate-, silicateand phosphate-based). Scanning electron microscope (SEM) is utilized in order to analyze the coating morphology and wear scars obtained during wear tests. Energy dispersive X-ray spectroscopy (EDS) analyses were implemented to det ...Daha fazlası
ERTUŞ, Emre Burak | AHMETOĞLU, Çekdar Vakıf | ÖZTÜRK, Abdullah
In this study, it was aimed to utilize Porous glass (PG) as an adsorbent in MB removal from wastewater. PG powders were produced by melting and phase separation of an alkali borosilicate glass followed by selective leaching in HCl and an additional alkali treatment. The scanning electron microscope and N2 adsorption/desorption techniques were applied to characterize the pore architecture of the PGs. Methylene blue (MB) adsorption efficiency was investigated from the change in MB concentration in the MB aqueous solutions with various concentrations through the absorbance of the solution at a wa ...Daha fazlası
The measurement of the production of prompt D0, D+, D∗+, and D+s mesons in proton–lead (p–Pb) collisions at the centre-of-mass energy per nucleon pair of √sNN = 5.02 TeV, with an integrated luminosity of 292 ± 11 μb−1, are reported. Differential pro- duction cross sections are measured at mid-rapidity (−0.96 < ycms < 0.04) as a function of transverse momentum (pT) in the intervals 0 < pT < 36 GeV/c for D0, 1 < pT < 36 GeV/c for D+ and D∗+, and 2 < pT < 24GeV/c for D+s mesons. For each species, the nuclear modification factor RpPb is calculated as a function of pT using a proton-proton (pp) ref ...Daha fazlası
ÇELİK, Erdal | YILDIRIM, Serdar | ERTUŞ, Emre Burak
Doped and undoped barium hexaferrite powders (BaFe12O19, Ba0.7Ti0.3Fe12O19 and Ba0.7La0.3Fe12O19) were produced by the sol-gel method. The effects of substituting elements were studied in terms of the magnetic properties of barium hexaferrite powders. The magnetic properties were remarkably changed by the substitution of La3+ and Ti4+ ions for the Ba2+ ion and were accompanied by oxygen deficiency in the BaFe12O19. Coercivities (HC) from 4200 to 5100 Oe, remanences (MR) from 22 to 49 emu/g and ssaturation magnetizations (MS) from 41 to 73 emu/g were obtained for different samples. The obtained ...Daha fazlası
Enzyme technology has received great attention with improvements in biological remediation techniques. Enzyme-based biosensors can qualify as a measuring system as they permit the detection of biological events by detecting biochemical changes in biological processes. Advantages of biosensors are identification of even small quantities, cost effectiveness, and requirement of less power and less volume for identifying a wide linear range for usage [1]. Moreover, biosensors have high sensitivity, selectivity, and good response time for different kinds of applications.
6698 sayılı Kişisel Verilerin Korunması Kanunu kapsamında yükümlülüklerimiz ve cerez politikamız hakkında bilgi sahibi olmak için alttaki bağlantıyı kullanabilirsiniz.