Browsing by Author "Yildirim, Gurcan"
Now showing items 1-15 of 15
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Ab initio Hartree-Fock and density functional theory study on characterization of 3-(5-methylthiazol-2-yldiazenyl)-2-phenyl-1H-indole
Buyukuslu, Halim; Akdogan, Mustafa; Yildirim, Gurcan; Parlak, Cihan (Pergamon-Elsevier Science Ltd, 2010)The optimized molecular structures, vibrational frequencies, corresponding vibrational assignments, thermodynamic properties, UV-vis spectra and atomic charges of 3-(5-methylthiazol-2-yldiazeny1)-2-phenyl-1H-indole molecule ... -
Change of mechanical performance and characterization with replacement of Ca by Gd nanoparticles in Bi-2212 system and suppression of durable tetragonal phase by Gd
Akkurt, Bahadir; Yildirim, Gurcan (Springer, 2016)In this study, we concentrate on crucial evaluations of mechanical performances belonging to Bi2.1Sr2.0Ca1.1-xGdxCu2.0Oy superconducting ceramics with the partial replacement within the molar ratio change 0 ae<currency> x ... -
Deformation of Mechanical Properties and Failure Behavior of Hays-Kendall Approach in Bi-2223 Superconducting Core After Eu Inclusions
Dogruer, Musa; Zalaoglu, Yusuf; Yildirim, Gurcan; Terzioglu, Cabir (Springer, 2014)Mechanical features of Bi1.8Pb0.4Eu (x) Sr2Ca2.2Cu3O (y) superconductor samples (x=0, 0.01, 0.03, 0.05, 0.07, 0.1, and 0.3) are elaborated by traditional solid-state reaction route. The deformation of the mechanical ... -
Detailed survey on minimum activation energy for penetration of Ni nanoparticles into Bi-2223 crystal structure and temperature-dependent Ni diffusivity
Zalaoglu, Yusuf; Terzioglu, Cabir; Turgay, Tahsin; Yildirim, Gurcan (Springer, 2018)The primary contributions of this study are not only to explore the role of diffusion annealing temperature interval 650 to 850 A degrees C on the formation of effective electron-phonon coupling or cooper-pair probabilities ... -
Effect of Co/Cu partial replacement on fundamental features of Y-123 ceramics
Ozturk, Ozgur; Nefrow, Abdul R. A.; Bulut, Fatih; Ada, Hakan; Turkoz, Mustafa B.; Yildirim, Gurcan (Springer, 2020)This study is liable for the effect of sample production processes including the standard solid-state reaction (SSR) and classical sol-gel (SG) preparation methods on the fundamental characteristic features, namely electrical, ... -
Effect of Li2CO3 on formation temperature of hBN by modified O'Connor model
Oz, Muhammed; Saritekin, Namik Kemal; Bozkurt, Cetin; Budak, Erhan; Yildirim, Gurcan (Wiley-V C H Verlag Gmbh, 2016)This study is interested in the effect of lithium carbonate on the formation of hexagonal boron nitride (hBN) by means of the available experimental methods including TGA, XRD, FTIR, SEM and HR-TEM. hBN samples were ... -
Experimental and theoretical approaches for structural and mechanical properties of novel side chain LCP-PP graft coproducts
Cetin, Sedat; Sen, Behiye Ozturk; Soykan, Ugur; Firat, Elif Esra; Yildirim, Gurcan (Scientific Technical Research Council Turkey-Tubitak, 2016)The monomers p-biphenyloxycarbonylphenyl acrylate (BPCPA) and p-biphenyloxycarbonylphenyl methacrylate (BPCPMA) were synthesized by the reaction of p-acryloyloxybenzoyl chloride and p-methacryloyloxybenzoyl chloride with ... -
Experimental and theoretical studies on the identification of p-biphenyloxycarbonylphenyl acrylate
Cetin, Sedat; Yildirim, Gurcan; Parlak, Cihan; Akdogan, Mustafa; Terzioglu, Cabir (Pergamon-Elsevier Science Ltd, 2011)This study presents the identification of a title compound, p-biphenyloxycarbonylphenyl acrylate by means of experimental and theoretical evidences. The spectroscopic properties of the compound were experimentally investigated ... -
Investigation of solvent polarity effect on molecular structure and vibrational spectrum of xanthine with the aid of quantum chemical computations
Polat, Turgay; Yildirim, Gurcan (Pergamon-Elsevier Science Ltd, 2014)The main scope of this study is to determine the effects of 8 solvents on the geometric structure and vibrational spectra of the title compound, xanthine, by means of the DFT/B3LYP level of theory in the combination with ... -
Rosehip (Rosa canina L.) Oil
Kiralan, Mustafa; Yildirim, Gurcan (Springer International Publishing Ag, 2019)Rosehip (Rosa canina L.), is a member of Rosaceae family. The seeds of Rosa canina contain approximately 15% crude oil. Different extraction techniques are widely used to extract the oils from the seeds. The traditional ... -
Significant Change in Mechanical Properties of YBa2Cu3O7-x Bulk Superconductors Diffused with Sn Nanoparticles
Dogruer, Musa; Terzioglu, Cabir; Yildirim, Gurcan; Gorur, Osman (Springer, 2014)Mechanical behavior of YBa2Cu3O7-x (Y123) superconductors exposed to Sn nanoparticles diffusion is determined by the way of Vickers microhardness (H (v) ) conducted at different applied loads (0.245Na parts per thousand ... -
Significant development on pinning of vortices in Y-123 superconductor with homovalent Ba/Nd substitution
Saritekin, Namik Kemal; Oz, Muhammed; Terzioglu, Cabir; Gorur, Osman; Yildirim, Gurcan (Springer, 2016)In this study, the magnetotransport measurements are performed in the field range of 0-7 T to determine the effect of Nd nanoparticles inserted in the Y-123 crystal structure on the superconducting characteristics and flux ... -
Synthesis and spectroscopic studies of carbon nanosheets (CNSs) produced by pyrolysis of phthalazinium betaines at relatively lower temperature
Guzel, Baris; Celebi, Nihat; Yildirim, Gurcan (Springer International Publishing Ag, 2019)The main scope of this comprehensive study is to investigate the annealing temperature effects (300 degrees CT500 degrees C) on the crucial properties as regards the characteristic bond structures, surface morphology, ... -
Synthesis of highly ordered hBN in presence of group I/IIA carbonates by solid state reaction
Oz, Muhammed; Saritekin, Namik Kemal; Bozkurt, Cetin; Yildirim, Gurcan (Wiley-V C H Verlag Gmbh, 2016)This comprehensive study declares experimentally the effects of IA/IIA metal carbonates on the formation of hexagonal boron nitride (hBN) with the aid of the available experimental methods as regards Fourier transform ... -
Vibrational assignments, spectroscopic investigation (FT-IR and FT-Raman), NBO, MEP, HOMO-LUMO analysis and intermolecular hydrogen bonding interactions of 7-fluoroisatin, 7-bromoisatin and 1-methylisatin - A comparative study
Polat, Turgay; Bulut, Fatih; Arican, Ilknur; Kandemirli, Fatma; Yildirim, Gurcan (Elsevier Science Bv, 2015)In this comprehensive study, theoretical and experimental studies were carried out on 7-fluoroisatin, 7-bromoisatin and 1-methylisatin using FT-Raman and FT-IR spectra. The optimized geometrical parameters and theoretical ...
