Kurum Yazarı "Gürkan, Yelda Yalçın" WoS İndeksli Yayınlar Koleksiyonu İçin Listeleme
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Analysis of the reaction kinetics of aminotoluene molecule through DFT method
Eren, Bahar; Gürkan, Yelda Yalçın (Bulgarian Acad Science, 2015)In this study, the most probable reaction paths of aminotoluene (o-toluidine) molecule with OH radical were analyzed. The optimized geometry was calculated via Gauss View 5. Subsequently, the lowest energy status was found ... -
Application of Fe-doped TiO2 specimens for the solar photocatalytic degradation of humic acid
Birben, Nazmiye Cemre; Uyguner-Demirel, Ceyda Senem; Sen Kavurmaci, Sibel; Gürkan, Yelda Yalçın; Türkten, Nazlı; Çınar, Zekiye; Bekbolet, Miray (Elsevier Science Bv, 2017)This study aimed to assess solar photocatalytic activity of Fe-doped TiO2 specimens for the degradation of natural organic matter (NOM) represented by a model humic acid (HA). Fe-doped TiO2 specimens (P-25 and UV-100) were ... -
Determination of Ascorbic Acid in Common Fruits, Herbal Tea by Using Cuprac and Cerac Methods
Karasakal, Ayça; Gürkan, Yelda Yalçın (Asian Journal Of Chemistry, 2012)The method used to determine the ascorbic acid (Vitamin C) is based on the oxidation of ascorbic acid to dehlydroascorbic acid with the cupric ion reducing antioxidant capacity (CUPRAC) and ceric-reducing antioxidant ... -
Determination of Total Antioxidant Capacity of Rosehip (R. arvensis Huds) Growing in Turkey and Rosehip Species by Using CUPRAC Spectrophotometric Method
Karasakal, Ayça; Gürkan, Yelda Yalçın (Asian Journal Of Chemistry, 2013)L-Ascorbic acid (vitamin C) is the most important vitamin for human nutrition supplied by fruits and vegetables, and is the main water-soluble antioxidant in human plasma. L-Ascorbic acid is reversibly oxidized to form ... -
Determination of Vitamin E in Canola Seeds by High Performance Liquid Chromatography
Karasakal, Ayça; Gürkan, Yelda Yalçın (Asian Journal Of Chemistry, 2012)Tocopherols (vitamin E) are natural phenolic antioxidants present in vegetable oils and are responsible for many healthful properties of these foods. They are effective radical scavengers and defend the body against free ... -
Electrical, optical and theoretical characterization of doped and undoped calamitic liquid crystal: (s)-5-octyloxy-2-[[[4-(2-methyl butoxy) phenyl] imino] methyl] phenol
Serin, Merih; Kuruoğlu, Furkan; Moğulkoç, M.; Çalışkan, Murat; Gürkan, Yelda Yalçın; Yaşa Şahin, O.; Bilgin Eran, B. (Natl Inst Optoelectronics, 2014)The electrical conductivities of undoped and doped calamitic liquid crystalline compound, (S)-5-octyloxy-2-[[[4-(2-methylbutoxy) phenyl] imino] methyl] phenol (OMPIMP) with tetrabutylammonium tetrafluoroborate as dopant ... -
Forced Degradation Studies of Nateglinide by the First-Order Derivative Spectrophotometric Method and the Density Functional Theory of the Nateglinide Molecule
Karasakal, Ayça; Gürkan, Yelda Yalçın (Springer, 2022)Nateglinide (NAT) is an oral antihyperglycemic agent used for the treatment of noninsulin-dependent diabetes mellitus. We evaluated the NAT stability under various forced degradation tests (acidic, basic) and predicted the ... -
Influence of Se/N Codoping on the Structural, Optical, Electronic and Photocatalytic Properties of TiO2
Gürkan, Yelda Yalçın; Kasapbasi, Esra; Türkten, Nazlı; Çınar, Zekiye (Mdpi Ag, 2017)Se4+ and N3- ions were used as codopants to enhance the photocatalytic activity of TiO2 under sunlight irradiation. The Se/N codoped photocatalysts were prepared through a simple wet-impregnation method followed by heat ... -
Modelling of oxydibenzenesulfonyl hydrazide (OBSH) in gas-phase
Eren, Bahar; Gürkan, Yelda Yalçın (Scientific Publ-India, 2019)Oxydibenzenesulfonyl hydrazide (OBSH), under some circumstances, can act as a foaming factor, and also as a crosslinking agent in the hardening reaction. Another use of OBSH is elastomer production under room pressure, ... -
Molecules of benidipine: experimental and theoretical investigation
Karasakal, Ayça; Doğan, G.; Gürkan, Yelda Yalçın (Bulgarian Acad Science, 2017)In the search for a plausible mechanism for the photocatalytic degradation reaction of BEN, DFT reactivity descriptors were employed to have information about the most susceptible sites for hydroxyl radical attack. ... -
The most stable transition state complexes of the aminotoluene molecule
Eren, Bahar; Gürkan, Yelda Yalçın (Bulgarian Acad Science, 2016)In this study the most probable reaction paths of ATnm, OATnm, MATnm, PATnm, NMATo and NMATm transition states with OH radicals have been analyzed. The optimized geometry was calculated via Gauss View 5. Subsequently, the ... -
Photodegradation kinetics of organophosphorous with hydroxyl radicals: Experimental and theoretical study
Aydogdu, S.; Hatipoğlu, A.; Eren, Bahar; Gürkan, Yelda Yalçın (Serbian Chemical Society, 2021)The presence of organophosphorus compounds (OPs) in the environmental counterparts has become an important problem because of their toxicity. In this study, the photocatalytic degradation reactions of the three OPs with ... -
Possible reaction pathways of the lincomycin molecule according to the DFT calculation method
Eren, Bahar; Gürkan, Yelda Yalçın (Serbian Chemical Soc, 2017)Human-used antibiotics are eliminated from the body with little or no transformation at all. Traces of eliminated antibiotics enter the receiving environment directly since they cannot be treated in prevalent wastewater ...