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  • Matrix Isolation Infrared Spectra and Photochemistry of Hydantoin 

    Öğrüç Ildız, Gülce; Nunes, Claudio M.; Fausto, Rui (Amer Inst Physics, 2 Huntington Quadrangle, Ste 1No1, Melville, Ny 11747-4501 USA, 2013-01-31)
    Hydantoin (C3H4N2O2, 2,4-imidazolidinedione) was isolated in argon matrix at 10 K and its infrared spectrum and unimolecular photochemistry were investigated. The molecular structure of the compound was studied both at the ...
  • Modeling Solar Cycles 15 to 21 Using a Flux Transport Dynamo 

    Işık, Emre; Jiang, J.; Cameron, R. H.; Schmitt, D. (Edp Sciences S A, 17, Ave Du Hoggar, Pa Courtaboeuf, Bp 112, F-91944 Les Ulis Cedex A, France, 2013-05)
    Context. The Sun's polar fields and open flux around the time of activity minima have been considered to be strongly correlated with the strength of the subsequent maximum of solar activity. Aims. We aim to investigate ...
  • New Ring-Like Models and ab Initio DFT Study of the Medium-Range Structures, Energy and Electronic Properties of GeSe2 Glass 

    Akalın, Elif; Akyüz, Sevim; Holomb, R.; Mitsa, V. (Taylor & Francis Ltd, 4 Park Square, Milton Park, Abingdon Ox14 4Rn, Oxon, England, 2013-07-01)
    Ab initio DFT calculations were performed on GenSem nanoclusters (n=2, 3, 5, 6, 12; m=6-9, 14, 16, 30) that represent the local structure of GeSe2 glass and on some defect' GenSem clusters that are thought to be related ...
  • FTIR and EDXRF Investigations of Salt Tolerant Soybean Mutants 

    Akyüz, Sevim; Akyüz, Zeki Tanıl; Çelik, Özge; Atak, Çimen (Elsevier Science Bv, Po Box 211, 1000 Ae Amsterdam, Netherlands, 2013-07-23)
    Molecular structure and elemental composition of soybean (Glycine max L. Merr.) seeds of S04-05 (Ustun-1) variety together with its salt tolerant mutants were investigated by Fourier transform infrared (FTIR) and energy ...
  • Ab Initio and Raman Study of Medium Range Ordering in GeSe2 Glass 

    Akyüz, Sevim; Akalın, Elif; Holomb, R.; Mitsa, V.; Sichka, M. (Elsevier Science Bv, Po Box 211, 1000 Ae Amsterdam, Netherlands, 2013-08-01)
    High resolution Raman spectra of GeSe2 glass were measured and fitted using individual Gaussian components. The structural origin of the components were interpreted using the results of ab initio density functional theory ...
  • Limits to Solar Cycle Predictability: Cross-equatorial Flux Plumes 

    Işık, Emre; Cameron, R. H.; Dasi-Espuig, M.; Jiang, J.; Schmitt, D.; Schuessler, M. (Edp Sciences S A, 17, Ave Du Hoggar, Pa Courtaboeuf, Bp 112, F-91944 Les Ulis Cedex A, France, 2013-09)
    Context. Within the Babcock-Leighton framework for the solar dynamo, the strength of a cycle is expected to depend on the strength of the dipole moment or net hemispheric flux during the preceding minimum, which depends ...
  • Counterpoise Correction on the Geometries and Vibrational Frequencies of Acetazolamide Dimers 

    Özel, Ayşen; Kecel Gündüz, Serda; Çelik, Sefa; Akyüz, Sevim (Asian Journal Of Chemistry, 11/100 Rajendra Nagar, Sector 3,, Sahibabad 201 005, Ghaziabad, India, 2013-10)
    Acetazolamide (m.f. C4H6N4O3S2) (N-(5-sulfamoyl-1,3,4-thiadiazol-2-yl) acetamide), is a sulfonamide derivative and carbonic anhydrase inhibitor. It is often used in the treatment of various diseases. In this study, the ...
  • Vibrational Spectroscopic Investigation of Tetracyanopalladate Bridged Two Dimensional Coordination Polymer Compounds of Pyrimidine 

    Akkaya, Yasemin; Akyüz, Sevim; Akyüz, Zeki Tanıl (Asian Journal Of Chemistry, 11/100 Rajendra Nagar, Sector 3,, Sahibabad 201 005, Ghaziabad, India, 2013-11)
    The two dimensional layered polymer compounds, M(PM)(2)Pd(CN)(4) {where M = Mn, Zn or Cd; PM = pyrimidine} have been prepared for the first time and their FT-IR (4000-400 cm(-1)) and Raman (4000-50 cm(-1)) spectra are ...
  • EDXRF and FTIR Analysis of Some Glass Fragments Belong to Ottoman Period, Excavated in Ancient Ainos (Enez) Turkey 

    Akyüz, Sevim; Akyüz, Zeki Tanıl; Başaran, Sait; Çakan, Banu (Asian Journal Of Chemistry, 11/100 Rajendra Nagar, Sector 3,, Sahibabad 201 005, Ghaziabad, India, 2013-12)
    Ancient glass fragments excavated in the archaeological district Enez (Ancient Ainos), Turkey were investigated by combined energy dispersive X-ray fluorescence (EDXRF) and Fourier Transform Infrared (FTIR) spectrometry ...
  • Effects of Alkali Metallization on the Luminescence Degradation of Porous Silicon 

    Özer, Mehmet; Kayahan, Ersin; Oral, Zehra Banu (Polish Acad Sciences Inst Physics, Al Lotnikow 32-46, Pl-02-668 Warsaw, Poland, 2012-01)
    In this study, change in the intensity and stability of photoluminescence obtained by porous silicon were investigated with illumination time and metallization state. The porous silicon samples were metallized by immersing ...
  • Sintering Behaviour of ZnO:Cu Ceramics Fabricated by Sol-Gel Derived Powders 

    Özer, Mehmet; Bahşi Oral, Zehra Banu; Oral, Ahmet Yavuz; Aslan, Muhammed Hasan; Kayahan, Ersin (Polish Acad Sciences inst Physics, Al Lotnikow 32-46, Pl-02-668 Warsaw, Poland, 2012-01)
    Doped zinc(II) oxide (ZnO:Cu) ceramics were prepared from sol gel derived nanocrystalline powders. Powders were prepared by dissolving zinc and copper acetates in isopropyl alcohol. Ethanolamine was used to enhance the ...
  • The Concept of Unidirectionally Coupled Nonlinear Circuits via a Memristor 

    Volos, Ch. K.; Kyprianidis, I. M.; Stouboulos, I. N.; Stavrinides, S. G.; Anagnostopoulos, A. N.; Özer, Mehmet (Polish Acad Sciences Inst Physics, Al Lotnikow 32-46, Pl-02-668 Warsaw, Poland, 2012-01)
    Confirmation of the existence of memristor by researchers at 2008 attracts much interest on this newly found circuit element. This is due to the fact that memristor opens up new functionalities in electronics and it has ...
  • Ground State and Magnetostatic Properties of a Dipole System Arranged in Two-Dimensional Lattice 

    Bolcal, Ertuğrul Cem; Dimitrov, Ventsislav; Aktaş, Bekir; Aslan, Muhammed Hasan; Bozkurt, A. (Polish Acad Sciences Inst Physics, Al Lotnikow 32-46, Pl-02-668 Warsaw, Poland, 2012-01)
    A system of nano sized modomain ferromagnetic particle arranged in two-dimensional lattice is theoretically investigated. The basic aim of the investigation is to find the ground state of these types of models where the ...
  • A Conformational Analysis and Vibrational Spectroscopic Investigation on 1,2-bis(o-carboxyphenoxy) Ethane Molecule 

    Balcı, Kubilay; Yapar, Gönül; Akkaya, Yasemin; Akyüz, Sevim; Koch, A.; Kleinpeter, E. (Elsevier Science Bv, Po Box 211, 1000 Ae Amsterdam, Netherlands, 2012-01)
    The minima on the potential energy surface of 1,2-bis(o-carboxyphenoxy)ethane (CPE) molecule in its electronic ground state were searched by a molecular dynamics simulation performed with MM2 force field. For each of the ...
  • Conformational Analysis and Vibrational Study of Sulfanilamide 

    Akyüz, Sevim; Öğrüç Ildız, Gülce (Elsevier Science Bv, Po Box 211, 1000 Ae Amsterdam, Netherlands, 2012-01)
    The possible stable conformers of sulfanilamide molecule were searched by potential energy surface scan at both semi-empirical PM3 and DFT/B3LYP-3-21G levels of theory. Both the harmonic and anharmonic vibrational modes, ...
  • Mathematical Models of Brain Dynamics: Progress and Perspectives 

    Borisenok, Sergey (Amer Inst Physics, 2 Huntington Quadrangle, Ste 1No1, Melville, Ny 11747-4501 Usa, 2012)
    We describe micro-, meso- and macroscopic levels for mathematical models of brain dynamics (spike neural model, K-models, quantum brain dynamics) and discuss some perspectives of their development.
  • Stellar Activity Cycles in a Model for Magnetic Flux Generation and Transport 

    Işık, Emre (Cambridge Univ Press, The Pitt Building, Trumpington St, Cambridge Cb2 1Rp, Cambs, England, 2012-10-03)
    We present results from a model for magnetic flux generation and transport in cool stars and a qualitative comparison of models with observations. The method combines an alpha Omega-type dynamo at the base of the convection ...
  • Pigment Analyses Of A Portrait And Paint Box Of Turkish Artist Feyhaman Duran (1886-1970): The EDXRF, FT-IR And Micro Raman Spectroscopic Studies 

    Akyüz, Sevim; Akyüz, Zeki Tanıl; Emre, Gülder; Güleç, Ahmet; Başaran, Sait (Pergamon-Elsevier Science Ltd, The Boulevard, Langford Lane, Kidlington, Oxford Ox5 1Gb, England, 2012-04)
    The samples obtained from nine different places of Ataturk portrait (oil on canvas, 86 cm x 136 cm) by Feyhaman Duran (1886-1970), one of the famous Turkish painters of the 20th century, together with five pigment samples ...
  • FTIR Spectroscopic And Quantum Chemical Studies On Hydantoin 

    Öğrüç Ildız, Gülce; Boz, İsmail; Ünsalan, Ozan (Maik Nauka/Interperiodica/Springer, 233 Spring St, New York, Ny 10013-1578 Usa, 2012-05)
    In this study the geometry optimization of monomeric and dimeric forms (D1, D2, and D3) of hydantoin molecule were done using DFT method employing 6-31++G(d, p) basis set. Harmonic and anharmonic wavenumbers and infrared ...
  • Characterization Of Ancient Glass Excavated In Enez (Ancient Ainos) Turkey By Combined Instrumental Neutron Activation Analysis And Fourier Transform Infrared Spectrometry Techniques 

    Akyüz, Sevim; Akyüz, Zeki Tanıl; Mukhamedshina, Nuranya M.; Mirsagatova, A. Adiba; Başaran, Sait; Çakan, Banu (Pergamon-Elsevier Science Ltd, The Boulevard, Langford Lane, Kidlington, Oxford Ox5 1Gb, England, 2012-06)
    Ancient glass fragments excavated in the archaeological district Enez (Ancient Ainos)-Turkey were investigated by combined Instrumental Neutron Activation Analysis (INAA) and Fourier Transform Infrared (FTIR) spectrometry ...

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