Yazar "Usta, Keziban" için listeleme
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Analysis of poly (2-Hydroxyethyl Methacrylate)-co-poly (4-Vinyl Pyridine) copolymers [COP2,4] irradiated: an EPR study
Ceylan, Yusuf; Aydoğmus, Hacer Yumurtacı; Usta, Keziban; Usta, Ayhan; Ceylan, Nurufe; Yımaz, Hatice Cansu (Polish Acad Sciences Inst Physics, 2016)Poly(2-hydroxyethyl methacrylate)-co-poly(4-vinyl pyridine) and poly(HEMA)-co-poly-(4-VP) copolymers were synthesized by free radical polymerization. K2S2O8 was used as an initiator. Chain lengths of the copolymer was ... -
An EPR study on radiation-induced 2-(piperidin-1-ylmethyl) phenol single crystal
Usta, Keziban; Ceylan, Yusuf; Usta, Ayhan; Ceylan, Nurufe; Aras, Erdal (Polish Acad Sciences Inst Physics, 2016)For the assessment of irradiation influence on 2-(piperidin-1-ylmethyl) phenol single crystals (C12H17NO), electron paramagnetic resonance measurements were carried out on the samples exposed to Co-60 radiation at dose ... -
An EPR study on radiation-induced 4-hydroxyphenyl-acetic acid polycrystalline
Ceylan, Yusuf; Usta, Keziban; Usta, Ayhan; Aydoğmuş, Hacer Yumurtacı; Güner, Ahmet (Elsevier Science Bv, 2015)To determine of irradiation effect on 4-hydroxyphenyl-acetic acid polycrystalline, electron paramagnetic resonance (EPR) measurements were carried out. Two samples were used, which were given dose of 22.8 and 49 kGy by ... -
An ESR study on 2,4 diaminotoluene exposed to gamma rays and application of machine learning
Ceylan, Yusuf; Usta, Keziban; Aydoğmuş, Hacer Yumurtacı; Usta, Ayhan; Ceylan, Nurufe; Aras, Erdal (Polish Acad Sciences Inst Physics, 2016)The polycrystals of 2,4 diaminotoluene were produced by slow evaporation of solvent. The polycrystalline samples were exposed to Co-60 gamma rays with dose rate of 0.950 kGy/h, at room temperature, for 12, 24, 48, and 72 ... -
Evaluation of antioxidant activity, phytochemicals and ESR analysis of lavandula stoechas
Ceylan, Yusuf; Usta, Keziban; Usta, Ayhan; Maltaş, Esra; Yıldız, Salih Zeki (Polish Acad Sciences Inst Physics, 2015)The antioxidant activity of phytochemicals and of the methanolic extract of Lavandula stoechas was evaluated by beta-carotene-linoleate bleaching, DPPH radical scavenging, ferric reducing/antioxidant power (FRAP). The ... -
Identification of radical structures on 1-pentamethylbenzyl-3-ethylimidazoliumsilver(I)bromide and 1,3-bis(pentamethylbenzyl)-4,5-dimethylbenzimidazoliumsilver(I)bromide exposed to gamma rays: an EPR study
Ceylan, Yusuf; Usta, Keziban; Kunduracıoğlu, Ahmet; Usta, Ayhan; Çetinkaya, Bekir (Wiley, 2016)1-Pentamethylbenzyl-3-ethylimidazoliumsilver(I)bromide and 1,3-bis(pentamethylbenzyl)-4,5dimethylbenzimidazoliumsilver(I)bromide and their Ag+ complexes were synthesized and their polycrystal forms were produced by ... -
In vitro analysis of AHPlus and MM-Seal by ESR and thermoanalytical methods
Ceylan, Yusuf; Usta, Ayhan; Usta, Keziban; Çobankara, Funda Kont; Yıldırım, Cihan; Birey, Mehmet (Polish Acad Sciences Inst Physics, 2015)The free radicals and their concentration in resin materials may impact biocompatibility and polymerization properties of dental materials. The aim of this study was to determine whether there are free radicals and to ... -
Investigation of irradiated 1H-Benzo[b] pyrrole by ESR, thermal methods and learning algorithm
Algül, Gülay; Ceylan, Yusuf; Usta, Keziban; Aydoğmuş, Hacer Yumurtacı; Usta, Ayhan; Aşık, Biray (Taylor & Francis Ltd, 2016)1H-Benzo[ b] pyrrole samples were irradiated in the air with gamma source at 0.969 kGy per hour at room temperature for 24, 48 and 72 h. After irradiation, electron spin resonance, thermogravimetry analysis (TGA) and ...
