Fen-Edebiyat Fakültesi: Recent submissions

Now showing items 941-960 of 1561

Incommensurate phase properties of TlGaSe2 layered crystals

Şentürk, Erdoğan (WILEY-V C H VERLAG GMBH, 2005)

The frequency and time dependence of the ac conductivity were measured within incommensurate phase in the frequency range 10(1)-10(7) Hz and analyzed. The electrical conductivity decreases with decreasing temperature, then ...
Two relaxation mechanisms in (Sr1-1.5xBix)TiO3 (x : 0.0067)

Şentürk, Erdoğan (PERGAMON-ELSEVIER SCIENCE LTD, 2005)

The ceramic samples were prepared by the solid-state reaction. Detailed studies of the real and imaginary part of the dielectric constant of the compound as a function of temperature carried out at low temperatures. The ...
Structural and dynamical properties of zinc-blende GaN, AlN, BN, and their (110) surfaces

Tütüncü, Hüseyin Murat; Bağcı, Sadık (AMERICAN PHYSICAL SOC, 2005)

Structural and dynamical properties of the zinc-blende bulk phase and the (110) surface of the nitride materials GaN, AIN and BN have been studied by employing an ab initio pseudopotential method and a linear response ...
Mass attenuation coefficients, effective atomic numbers and electron densities of some contrast agents for computed tomography

Mohammed Sultan Al-Buriahi; Tonguç, Barış Tamer (PERGAMON-ELSEVIER SCIENCE LTD, 2020)

In the clinical computed tomography (CT) examinations, a photon is attenuated as it passes a patient by tissues and contrast agents (CAs). The CM can increase the visibility of internal structures or fluids within the ...
Effects of the isoscalar and isovector interaction on the ground-state magnetic moments of odd-mass Ce137-145 nuclei

Yakut, Hakan; Tabar, Emre; Gamze Hoşgör (CANADIAN SCIENCE PUBLISHING, 2019)

A systematic study of the magnetic properties of deformed odd-neutron Ce137-145 isotopes using the microscopic quasiparticle phonon nuclear model (QPNM) has been presented. The QPNM includes residual spin-spin interaction ...
Synthesis, antioxidant activity and SAR study of novel spiro-isatin-based Schiff bases

Fatih Sonmez; Zuhal Gunesli; Belma Zengin Kurt; Isil Gazioglu; Avcı, Davut; Mustafa Kucukislamoglu (SPRINGER, 2019)

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Novel Cu(II), Co(II) and Zn(II) metal complexes with mixed-ligand: Synthesis, crystal structure, alpha-glucosidase inhibition, DFT calculations, and molecular docking

Avcı, Davut; Sumeyye Alturk; Fatih Sonmez; Tamer, Ömer; Başoğlu, Adil; Atalay, Yusuf; Belma Zengin Kurt; Necmi Dege (ELSEVIER, 2019)

Novel Cu(II), Co(II) and Zn(II) metal complexes containing 6-methylpyridine-2-carboxylic acid and 2,2'-dipyridylamine {[Cu(6-mpa)(dipya)(OAc)] center dot 3H(2)O (1), [Co(6-mpa)(dipya)Cl-2]center dot 2H(2)O (2), ...
Synthesis, crystal structure, photophysical properties, density functional theory calculations and molecular docking studies on Cd(II) complex of 4,4 '-dimethyl-2,2 '-dipyridyl

Tamer, Ömer; Avcı, Davut; Necmi Dege; Atalay, Yusuf (ELSEVIER, 2020)

A Cd(II) complex containing 4,4'-dimethyl-2,2'-dipyridyl (dmbpy) and nitrate (NO3-) was synthesized, and its crystal structure was determined by single crystal X-ray diffraction method. A detailed investigation on the ...
A new dinuclear copper (II) complex of 2,5-Furandicarboxyclic acid with 4(5)-Methylimidazole as a high potential alpha-glucosidase inhibitor: Synthesis, Crystal structure, Cytotoxicity study, and TD/DFT calculations

Avcı, Davut; Sumeyye Alturk; Fatih Sonmez; Tamer, Ömer; Başoğlu, Adil; Atalay, Yusuf; Belma Zengin Kurt; Dilek Ozturk; Necmi Dege (WILEY, 2019)

A new dinuclear copper (II) complex of 2,5-furandicarboxyclic acid with 4(5)-methylimidazole, [Cu (FDCA)((4(5)MeI)(2)](2)center dot 2H(2)O, was synthesized, and its structure characterized by XRD, FT-IR and UV-Vis spectroscopic ...
A novel series of M(II) complexes of 6-methylpyridine-2-carboxylic acid with 4(5)methylimidazole: Synthesis, crystal structures, alpha-glucosidase activity, density functional theory calculations and molecular docking

Avcı, Davut; Suemeyye Alturk; Fatih Sonmez; Tamer, Ömer; Başoğlu, Adil; Atalay, Yusuf; Belma Zengin Kurt; Necmi Dege (WILEY, 2019)

Novel complexes of 6-methylpyridine-2-carboxylic acid and 4(5)methylimidazole, namely [Mn(6-mpa)(2)(4(5)MeI)(2)] (1), [Zn(6-mpa)(2)(4(5)MeI)(2)] (2), [Cd(6-mpa)(2)(4(5)MeI)(2)] (3), [Co(6-mpa)(2)(4(5)MeI)(2)] (4), ...
Dielectric characteristics of Ce3+ doped Sr0.61Ba0.39Nb2O6 with Cole-Cole plots technique

Şentürk, Erdoğan (WILEY-V C H VERLAG GMBH, 2004)

In this paper, we have investigated two-relaxator mechanism and dielectric characteristics of Ce3+ doped Sr0.61Ba0.39Nb2O6 with dielectric spectroscopy measurements. The crystal undergoes a ferroelectric phase transition ...
Two New Co(II) Complexes of Picolinate: Synthesis, Crystal Structure, Spectral Characterization, -Glucosidase nhibition and TD/DFT Study

Suemeyye Alturk; Avcı, Davut; Belma Zengin Kurt; Tamer, Ömer; Başoğlu, Adil; Fatih Sönmez; Atalay, Yusuf; Necmi Dege (SPRINGER, 2019)

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A novel series of mixed-ligand M(II) complexes containing 2,2 '-bipyridyl as potent alpha-glucosidase inhibitor: synthesis, crystal structure, DFT calculations, and molecular docking

Avcı, Davut; Sumeyye Alturk; Fatih Sonmez; Tamer, Ömer; Başoğlu, Adil; Atalay, Yusuf; Belma Zengin Kurt; Necmi Dege (SPRINGER, 2019)

Diabetes mellitus (DM) is a common degenerative disease and characterized by high blood glucose levels. Since the effective antidiabetic treatments attempt to decrease blood glucose levels, keeping glucose under control ...
Synthesis, crystal structure, spectroscopic characterization and nonlinear optical properties of (Z)-N '-(2,4-dinitrobenzylidene)-2-(quinolin-8-yloxy) acetohydrazide

N. Boukabcha; A. A. Djafri; Y. Megrouss; Tamer, Ömer; Avcı, Davut; Tuna, Murat; N. Dege; A. Chouaih; Atalay, Yusuf; A. Djafri; E. Hamzaoui (ELSEVIER SCIENCE BV, 2019)

New organic compound of (Z) -N'- (2, 4-dinitrobenzylidene) -2- (quinolin-8-yloxy) acetohydrazide (DBQA) was synthesized for the first time and its structural characterization was performed by single crystal X-ray diffraction ...
Removal of Congo red by thermally and chemically modified halloysite: equilibrium, FTIR spectroscopy, and mechanism studies

F. Bessaha; N. Mahrez; K. Marouf-Khelifa; Çoruh, Ali; A. Khelifa (SPRINGER, 2019)

Unmodified halloysite and its heated and heat-processed/acid-leached forms were utilized for the adsorption of Congo red (CR) from aqueous medium. The samples were analyzed by ICP and nitrogen adsorption prior to the ...
Theoretical studies on molecular structure and vibrational spectra of 8-hydroxyquinolinium picrate (vol 79, pg 1425, 2011)

A. Basoglu; Avcı, Davut; Y. Atalay; F. Celik; T. Sahinbas (PERGAMON-ELSEVIER SCIENCE LTD, 2019)

The authors regret to inform that the oxygen atom in 8-hydroxyquinolinium was forgotten during the initial calculations and then these calculations were repeated according to the correct molecular structure. But in the ...
A heterocyclic compound 5-acetyl-2,4-dimethylthiazole, spectroscopic, natural bond orbital, nonlinear optical and molecular docking studies

Avcı, Davut; B. Dede; S. Bahceli; D. Varkal (SOC MEXICANA FISICA, 2019)

In this work, the 5-acetyl-2,4-dimethylthiazole (C7H9NSO) molecule was studied by using the experimental UV-vis (in three different solvents) and FT-IR spectral results, and theoretically using DFT calculation method. The ...
A theoretical study on the ground and low-energy magnetic dipole characteristics of Pu-239 nucleus

Tabar, Emre (ELSEVIER SCIENCE BV, 2019)

A microscopic model analysis of the magnetic dipole (M1) properties of Pu-239 nucleus, which is a fissile material not only used in nuclear weapons but also used in some nuclear reactors as a source of energy, has been ...
Magnetic properties of K=1/2 states in deformed odd-mass nuclei

Tabar, Emre (ELSEVIER SCIENCE BV, 2019)

A method for calculation of the ground-state magnetic moment, effective spin gyromagnetic factors and rotational decoupling parameter of the K = 1/2 states in deformed odd-mass nuclei has been described by using the concept ...
A theoretical investigation of the magnetic dipole moment of the ground- and excited-states below 600 keV in well-deformed W-183,W-185, Re-185,Re-187 and Os-187,Os-189

Tabar, Emre (WORLD SCIENTIFIC PUBL CO PTE LTD, 2019)

Magnetic dipole moments of the ground- and excited-states below 600 keV in W-183,W-185, Re-185,Re-187 and Os-187,Os-189 nuclei have been systematically studied in the framework of a microscopic Quasiparticle Phonon Nuclear ...