Yazar "Köksal F." için listeleme
-
Electron paramagnetic resonance of Cu2+ doped Na2HAsO4·7H2O single crystals
Köksal F.; Kartal I.; Gençten A. (1998)The electron paramagnetic resonance spectra of Cu2+ doped Na2HAsO4·TH2O single crystals were studied at room temperature. The results indicate the substitutional entrance of Cu2+ in two magnetically inequivalent Na+ sites. ... -
Electron paramagnetic resonance of organic and inorganic centers in ?-irradiated natural sepiolite minerals
Köseoğlu R.; Köksal F.; Akkurt M.; Çiftçi E. (2006)Natural sepiolite minerals and their ?-irradiated forms were investigated by electron paramagnetic resonance (EPR) at room temperature and at 113 K. The EPR signals in powders of natural sepiolite were observed due to ... -
Electron paramagnetic resonance of rhyolite and ?-irradiated Trona minerals
Köksal F.; Köseoğlu R.; Başaran E. (Verlag der Zeitschrift fur Naturforschung, 2003)Rhyolite from the "Yellow Stone of Nevşehir" and ?-irradiated trona from the Ankara Mine have been investigated by electron paramagnetic resonance at ambient temperature and at 113 K. Rhyolite was examined by X-ray powder ... -
Electron paramagnetic resonance of some ? -irradiated drugs
Köseoğlu R.; Köseoğlu E.; Köksal F. (2003)Some drugs, used mainly in treatment of some neurological diseases and hypertension were exposed to ?-irradiation, and the samples were investigated by electron paramagnetic resonance (EPR). The observed spectra were ... -
Electron paramagnetic resonance of some ABX3 compounds
Köksal F.; Bahadir S.; Karabulut B.; Başaran E.; Yerli Y. (1999)Electron paramagnetic resonance studies of NaMnCl3, KMnCl3, KCuCl3, NH4CuCl3 were made between 400 and 5 K. The peak-to-peak derivative linewidths of these substances were found to be 14, 70, 10 and 5 mT, respectively. The ... -
Electron paramagnetic resonance study of defects in ?-irradiated marine mussel (Mytilus galloprovincialis) and scallop (Pecten jacobaeus) shells
Köseoğlu R.; Köksal F.; Birey M. (Verlag der Zeitschrift fur Naturforschung, 2004)EPR studies have been performed on some gamma-irradiated marine mussels (Mytilus galloprovincialis) and scallops (Pecten jacobaeus) from the families of Mytilidae and Pectinidae, respectively. Before ?-irradiation, the EPR ... -
Electron spin resonance age determination of a travertine sample from the southwestern part of Turkey
Travertine powdered samples collected from Denizli in the southwestern part of Turkey appear to be suitable for dating by ESR analysis due to presence of a g=2.0006 ESR signal. In general, ESR spectra of natural travertine ... -
Electron spin resonance of free radicals in some legumes, cereals and their aqueous solutions under photolysis
Çakir S.; Köksal F.; Tapramaz R.; Çakir O. (1991)In this study free radicals produced by u.v. photolysis in some legumes and cereals have been investigated by electron spin resonance (ESR) technique. The ESR spectra of small grains and powdered legumes and cereals samples ... -
Electron spin resonance of free radicals produced by ultraviolet photolysis in some vegetables and their juices
Paramagnetic species produced by ultraviolet photolysis in various vegetables of domestic origin have been investigated by electron spin resonance technique. The ESR spectra of the small cut pieces of the vegetable fleshes ... -
Electron spin resonance of gamma irradiated single crystals of acetylcholine iodide and bromide
Köksal F.; B and i;rey M.; Tapramaz R.; Çel and i;ik F. (1990)The electron spin resonance spectra of ?-irradiated acetylcholine iodide, [CH3COOCH2CH2N(CH3)3]I, and acetylcholine bromide, [CH3COOCH2CH2N(CH3)3Br single crystals and powders have been investigated between 120 and 300 K. ... -
Electron spin resonance of gamma-irradiated (CH3)4NPF6 and (CH3)4NBF4 single crystals [2]
The electron spin resonance spectra of ?-irradiated tetramethylammonium hexafluorophosphate and tetramethylammonium tetrafluoroborate single crystals and powders have been investigated between 120-350 K. The dominant species ... -
Electron spin resonance of gamma-irradiated K2S2O5 single crystals [2]
Tapramaz R.; Köksal F. (1992)The electron spin resonance (ESR) spectra of ?-irradiated potassium pyrosulfite single crystals have been investigated between 300 and 103 K temperature interval. The signals were attributed to three SO-3 and a SO-2 radicals, ... -
EPR of O2-radicals in the zeolites NH4NaY and NH4CaA
Activated and non-activated states of the zeolites NH4NaY and NH4CaA, and their NH+4 forms were prepared with an (NH4)2SO4 solution and were investigated by EPR after ?-irradiation. The formed radicals were attributed to ... -
EPR spectra of VO2+ doped in Na2C4H 4O6 single crystals
Karabulut B.; Tapramaz R.; Köksal F. (2004)EPR spectra of VO2+ ions in di-sodium tartrate, [Na 2C4H4O6], single crystal and powder spectra have been studied at room temperature. The angular variation of the EPR spectra has shown that three different VO2+ complexes ... -
EPR Studies of Cu2+ Doped Zinc Saccharin, [Zn(sac)2(H2O4].2H2O Single Crystals
Kartal I.; Karabulut B.; Köksal F.; îçbudak H. (2000)The EPR spectra of Cu2+ in zinc saccharin crystalline powder and single crystals have been recorded at room temperature. The angular variation of the spectra indicates the substitution of the host Zn2+ with Cu2+. Two ... -
ESR of [FORMULA OMITTED]NH2 and [FORMULA OMITTED]N2[FORMULA OMITTED] Free Radicals Produced by Gamma Irradiation in NH3OHCl, (NH3OH)2SO4 and N2H6SO4
Köksal F.; Çakır O.; Gümrükçü I.; Birey M. (1985)Free radicals produced by gamma irradiation in single crystals of hydroxylammonium chloride, hydroxylammonium sulfate and hydrazinium sulfate have been investigated at room temperature with ESR. The radicals in the ... -
Esr of gamma irradiation and ultraviolet photolysis products in some tetrasubstituted ammonium compounds
Köksal F.; Tapranaz R.; Dülkar M.D. (1992)The electron spin resonance of gamma and ultraviolet irradiated tetrabutylammonium halides NX (X=I,Cl,Br), tetrabutylammonium hydrogen sulfate NHSO, tetrabutyl-ammonium periodate NIO, and ultraviolet photolyzed tetramethylammonium ... -
On the e.s.r. line widths of hydrated Cu2+ in zeolites
Ucun F.; Köksal F.; Tapramaz R. (1992)In this study, the electron spin resonance (e.s.r.) of Cu(H2O)6P2+ ions were used to investigated the mobility and the freezing properties of water adsorbed on the synthetic zeolites of types 3A, 4A, 5A, and 13X with pore ... -
Proton spin lattice relaxation by NH4+ ion motions and spin diffusion in some ammonium compounds
Köksal F. (1984)The spin-lattice relaxation times (T1) of protons in polycrystalline diammonium-d-tartrate, (NH4)2C4H4O6, ammonium bismuth citrate, NH4BiC6H5O7, diammonium hydrogen citrate, (NH4)2HC6H5O7, sodium ammonium hydrogen phosphate ... -
Proton spin-lattice relaxation in acetylthiocholine, butyrylcholine and carbamylcholine halides
Köksal F.; Çakir O.; Bahçeli S. (1985)Spin-lattice relaxation times (T1) of protons in polycrystalline acetylthiocholine chloride, acetylthiocholine iodide, butyrylcholine chloride, butyrylthiocholine iodide and carbamylcholine chloride have been measured over ...
