Browsing by Author "Karabulut, Bunyamin"
Now showing items 1-20 of 35
-
Characterizing the paramagnetic behavior of Cu2+ doped nickel(II) dipicolinato by using theoretical and experimental EPR and UV-vis studies
Yildirim, Ilkay; Celik, Yunus; Karabulut, Bunyamin (Elsevier Science Bv, 2016)In this study, the paramagnetism in bis(hydrogeno pyridine-2,6-dicarboxylato) nickel(II) trihydrate, [Ni(Hdpc)(2)]center dot 3H(2)O, has been investigated after doping the sample with Cu2+ ions. The g and hyperfine parameters ... -
Elemental analysis of some important tobacco varieties (Nicotiana tabacum L.) by WDXRF spectroscopy
Camas, Necdet; Karabulut, Bunyamin; Karabulut, Abdulhalik (Asian Journal of Chemistry, 2007)Wavelength dispersive X-ray fluorescence (WDXRF) analysis, a rapid and non-destructive technique, is used for determining trace and heavy elements in tobacco selected from different districts of Turkey. By this technique, ... -
An EPR and optical absorption study of VO2+ ions in sodium hydrogen oxalate monohydrate (NaHC2O4 center dot H2O) single crystals
Karabulut, Bunyamin; Tufan, Ayse (Pergamon-Elsevier Science Ltd, 2006)Electron paramagnetic resonance of VO2+ doped sodium hydrogen oxalate monohydrate (NaHC2O4 center dot H2O) single crystals and powders are examined at room temperature. Single crystal rotations in each of the three mutually ... -
EPR and optical studies of vanadium doped potassium dihydrogen citrate (C6H7KO7) single crystal
Yarbasi, Zeynep; Karabulut, Abdulhalik; Karabulut, Bunyamin (Pergamon-Elsevier Science Ltd, 2011)An EPR and optical studies of VO2+ doped potassium dihydrogen citrate (PDHC) single crystals have been carried out at room temperature. It crystallizes in triclinic symmetry with the unit cell dimensions: a = 11.343 angstrom, ... -
EPR spectra of Cu2+ and VO2+ ions in ammonium hydrogen oxalate hemihydrate [(NH4)HC2O4 center dot 1/2H(2)O single crystals
Karabulut, Bunyamin; Tufan, Ayse (Pergamon-Elsevier Science Ltd, 2006)Cu2+ and VO2+ doped ammonium hydrogen oxalate hemihydrate, [(NH4)HC2O4 center dot(1)/2H2O], single crystals have been studied at room temperature and at 113 K in three mutually perpendicular planes. Both ions yield ... -
EPR Studies of Copper-Doped Potassium Dihydrogen Citrate (C6H7KO7) Single Crystal
Yarbasi, Zeynep; Karabulut, Abdulhalik; Karabulut, Bunyamin (Springer Wien, 2011)The magnetic environments of Cu2+-doped potassium hydrogen citrate (C6H7KO7) complex have been identified by electron paramagnetic resonance (EPR) technique. The angular variation of the EPR spectra has shown that three ... -
EPR study of gamma irradiated DL-methionine sulfone single crystals
Karabulut, Bunyamin; Yildirim, Ilkay (Elsevier Science Bv, 2015)Electron paramagnetic resonance (EPR) study of gamma irradiated dl-2-amino-4-(Methylsulfonyl) butyric acid (dl-methionine sulfone, hereafter dl-ABA) single crystals and powder was performed at room temperature. It has been ... -
EPR study of gamma irradiated N-methyl taurine (C3H9NO3S) and sodium hydrogen sulphate monohydrate (NaHSO3 center dot H2O) single crystals
Yildirim, Ilkay; Karabulut, Bunyamin (Pergamon-Elsevier Science Ltd, 2011)EPR study of gamma irradiated C3H9NO3S and NaHSO3 center dot H2O single crystals have been carried out at room temperature. There is one site for the radicals in C3H9NO3S and two magnetically distinct sites for the radicals ... -
An EPR study of VO2+ ions in arsanilic acid [C6H4AsNO (H2O)(2)] single crystals
Duzgun, Filiz; Karabulut, Bunyamin (Elsevier Science Bv, 2007)EPR spectra of VO2+ ions doped [C6H4AsNO (H2O)(2)] and powder have been studied at room temperatures. The detailed EPR analysis have shown that two different VO2+ Complexes are located in different chemical environments, ... -
First homo- and hetero-nuclear complexes of a chemical messenger-histamine: Cu(II) complex being a supramolecular assembly based on hydrogen bond, Ni(II)center dot center dot center dot pi and C-H center dot center dot center dot pi non-covalent interactions
Kastas, Gokhan; Pasaoglu, Humeyra; Karabulut, Bunyamin (Pergamon-Elsevier Science Ltd, 2011)In this study, the first homo- and hetero-nuclear cyanocomplexes of histamine (His), namely, [Cu(His)(2)] [Ni(CN)(4)], [Ni(His)(2)Ni(CN)(4)](n) and [Cd(His)Ni(CN)(4)](n) are investigated by X-ray diffraction (XRD) technique, ... -
Gamma-irradiated calcium succinate monohydrate single crystal investigation with EPR technique
Yarbasi, Zeynep; Karabulut, Bunyamin; Karabulut, Abdulhalik (Pergamon-Elsevier Science Ltd, 2011)In this study, EPR investigation of gamma-irradiated calcium succinate monohydrate [CaC(4)H(4)O(4)center dot H(2)O] single crystal has been carried out at room temperature. The compound crystallizes in monoclinic symmetry ... -
Magnetic, structural and computational studies on transition metal complexes of a neurotransmitter, histamine
Kastas, Gokhan; Pasaoglu, Humeyra; Karabulut, Bunyamin (Elsevier, 2011)In this study, the transition metal complexes of histamine (His) prepared with oxalate (Ox), that is, [Cu(His) (Ox)(H2O)], [Zn(His)(Ox)(H2O)] (or [Zn(His)(Ox)]center dot(H2O)), [Cd(His)(Ox)(H2O)(2)] and [Co(His)(Ox)(H2O)], ... -
Molecular structure and EPR spectra studies of saccharinate complexes with 4-acetylpyridine
Celik, Yunus; Bozkurt, Esat; Ucar, Ibrahim; Karabulut, Bunyamin (Pergamon-Elsevier Science Ltd, 2012)The crystal structures of [co(4-acpy)(2)(H2O)(4)] (sac)(2) (1) and [Zn(4-acpy)(2)(H2O)(4)] (sac)(2) (2) (4-acpy: 4-acetylpyridine, sac: saccharinate) complexes have been investigated by X-ray diffraction techniques. The ... -
Molecular structure and EPR spectral studies of trans-Bis(perchlorato-kappa O)tetrakis(1-vinyl-1Himidazole-kappa N-3)copper(II)
Kucuk, Kamil; Celik, Yunus; Sahin, Ramazan; Karabulut, Bunyamin; Andac, Omer; Dege, Necmi (Elsevier Science Bv, 2014)A new copper(II) complex of 1-vinylimidazole (1-Vim) and perchlorate has been synthesized and structurally characterized. The molecular structure of the complex exhibits six coordination with a distorted octahedron geometry. ... -
Molecular structures and spectroscopic studies of cationic metal-methylisonicotinate complexes with saccharinate counterions
Bozkurt, Esat; Ayaz, Huseyin; Ucar, Ibrahim; Karabulut, Bunyamin (Elsevier Science Sa, 2012)The crystal structures of [Co(methylisonicotinate)(2)(H2O)(4)](saccharinate)(2) and [Ni(methylisonicotinate)(2)(H2O)(4)](saccharinate)(2) complexes have been synthesized and characterized by spectroscopic, EPR and X-ray ... -
A Novel Approach to Detect QRS Based on Partition and Intensity on ECG Signals
Tavus, Mustafa Resit; Senyer, Nurettin; Tepe, Cengiz; Karabulut, Bunyamin (Ieee, 2016)This study presents a novel approach to define the formal information of heartbeat and detect the R-wave case in the workspace of Electrocardiogram (ECG). Analyze of QRS wave location gives opportunity to define the heart ... -
Obtaining the Optical and EPR Parameters of Vanadyl-Doped Sodium Dihydrogen Phosphate Dihydrate Powders by Experimental and Theoretical Methods
Kalfaoglu, Emel; Karabulut, Bunyamin (Springer Wien, 2013)In this study, the spin-Hamiltonian parameters (g and A), molecular orbital coefficients, and other spectroscopic properties of vanadyl-doped sodium dihydrogen phosphate dihydrate (NaH2PO4 center dot 2H(2)O) powders have ... -
Plant Counting By Using k-NN Classification on UAVs Images
Tavus, Mustafa Resit; Eker, Muhammed Emin; Senyer, Nurettin; Karabulut, Bunyamin (Ieee, 2015)In this study, Plant Counting was implemented by appling k-NN classification to images obtained from Unnamed Air Vehicle (UAV). Firstly, The images were subjected to erosion process by transforming different colour levels. ... -
Revealing the Spin-Hamiltonian and Characteristic Parameters of Paramagnetic Centers in Cu2+-Doped Potassium Metabisulfite (K2S2O5) Single Crystal by Electron Paramagnetic Resonance Technique
Yildirim, Ilkay; Karabulut, Bunyamin (Springer Wien, 2014)The present study is mainly related to finding out spin-Hamiltonian parameters of Cu2+-doped potassium metabisulfite [K2S2O5] single crystals using electron paramagnetic resonance (EPR) technique which has been applied in ... -
Structural, Spectroscopic and Magnetic Properties of [Cu(1-meim)(4)]center dot 2(PF6)
Yildirim, Ilkay; Karabulut, Bunyamin (Amer Inst Physics, 2016)[Cu(1-meim)(4)]center dot 2(PF6) (1-meim: 1-methylimidazole) complex has been synthesized and characterized by EPR, FT-IR, and XRD techniques. The Cu(II) complex crystallizes in the monoclinic system with the space group ...
