Toplam kayıt 596, listelenen: 1-20

    • 4 4 Bipyridyl Vibrational Assignments and Force Field 

      Topaçlı, Arzu; Akyüz, Sevim (Elsevier, 1995-04)
      A normal coordinate analysis of 4,4′-bipyridyl (4,4′-bipy) is carried out to establish consistent vibrational assignment and to determine a Urey-Bradley force field. The potential energy distribution of 4,4′-bipy is ...
    • 5-Methylhydantoin: from isolated molecules in a low-temperature argon matrix to solid state polymorphs characterization 

      Nogueira, Bernardo A.; Öğrüç Ildız, Gülce; Canotilho, J.; Eusebio, M. E. S.; Henriques, M. S. C.; Paixao, J. A.; Fausto, Rui (Amer Chemical Soc, 1155 16th St, Nw, Washington, Dc 20036 USA, 2017-07-20)
      The molecular structure, vibrational spectra and photochemistry of 5-methylhydantoin (C4H6N2O2; 5-MH) were studied by matrix isolation infrared spectroscopy and theoretical calculations at the DFT(B3LYP)/6-311++G(d,p) ...
    • A Certain Class of Harmonic Mappings Related to Functions of Bounded Boundary Rotation 

      Polatoğlu, Yaşar; Yavuz Duman, Emel; Aydoğan, Melike (Eudoxus Press, Llc, 1424 Beaver Trail Drive, Cordova, Tn 38016 Usa, 2014-05)
      Let V(k) be the class of functions with bounded boundary rotation and let S-H be the class of sense-preserving harmonic mappings. In the present paper we investigate a certain class of harmonic mappings related to the ...
    • A certain class of starlike log-harmonic mappings 

      Aydoğan, Melike; Polatoğlu, Yaşar (Elsevier Science Bv, Po Box 211, 1000 Ae Amsterdam, Netherlands, 2014-11)
      In this paper we investigate some properties of log-harmonic starlike mappings. For this aim we use the subordination principle or Lindelof Principle (Lewandowski (1961) [71). (C) 2014 Elsevier B.V. All rights reserved.
    • A Characterization for Convex Functions of Complex Order b 

      Polatoğlu, Yaşar (İstanbul University Science Faculty, 1997)
      The main purpose of this note is tö give a new characterization for convex functions of complex order b. It should be noticed that by giving specific values to b we obtain new characterizations of important subclasses of ...
    • A combinatorial discussion on finite dimensional Leavitt path algebras 

      Koç, Ayten; Esin, Songül; Güloğlu, İsmail; Kanuni, Müge (Hacettepe Univ, Fac Sci, Hacettepe Univ, Fac Sci, Beytepe, Ankara 06800, Turkey, 2014)
      Any finite dimensional semisimple algebra A over a field K is isomorphic to a direct sum of finite dimensional full matrix rings over suitable division rings. We shall consider the direct sum of finite dimensional full ...
    • A comparative study of auditory and visual event related coherences 

      Başar, Erol; Tülay, Elif; Turp Gölbaşı, Bilge; Güntekin, Bahar (Elsevier Science Bv, Po Box 211, 1000 Ae Amsterdam, Netherlands, 2012-09)
    • 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 ...
    • A Fourier-transform infrared and laser-Raman spectroscopic investigation of 4,4′-bipyridyl-transition metal(II) tetracyanonickelate clathrates 

      Akyüz, Sevim; Akyüz, Tanıl; Davies, J. Eric D. (1996-03)
      The FT-IR and Raman spectra are reported of M(4,4-bipyridyl)Ni(CN)4nG (where M = Mn, Fe, Co, Cu or Zn and G = benzene or aniline;n = 0–2) clathrates. The host structure consists of a three-dimensional rigid lattice formed ...
    • A mechanism for the dependence of sunspot group tilt angles on cycle strength 

      Işık, Emre (Iop Publıshıng Ltd, Temple Circus, Temple Way, Bristol Bs1 6Be, England, 2015-11-01)
      The average tilt angle of sunspot groups emerging throughout the solar cycle determines the net magnetic flux crossing the equator, which is correlated with the strength of the subsequent cycle. I suggest that a deep-seated, ...
    • A Molecular Mechanics Conformational Study of Peptide T 

      Godjayev, Niftali M.; Akyüz, Sevim; Akverdieva, G. (Elsevier, 1997-01-20)
      Conformational behaviour of peptide T, a competitor of the human immuno-deficiency virus in the binding to human T cells, was investigated by theoretical conformational analysis. Two types of conformations are found to be ...
    • A Natural Limit on the Observable Periods of Anomalous X-ray Pulsars and Soft Gamma-ray Repeaters 

      Ertan, Ünal; Çalışkan, Şirin; Ekşi, Kazım Yavuz; Erkut, M. Hakan; Alpar, M. Ali (Amer Inst Physics, 2 Huntington Quadrangle, Ste 1No1, Melville, Ny 11747-4501 USA, 2011)
      We investigate the dependence of the evolution of neutron stars with fallback disks on the strength of the magnetic dipole field of the star. Using the same model as employed by Ertan et al. (2009), we obtain model curves ...
    • A new correlation with lower kilohertz quasi-periodic oscillation frequency in the ensemble of low-mass x-ray binaries 

      Erkurt, M. Hakan; Duran, Sivan; Çatmabacak, Önder; Çatmabacak, Onur (Iop Publishing Ltd, Temple Circus, Temple Way, Bristol Bs1 6Be, England, 2016-11-01)
      We study the dependence of kilohertz quasi-periodic oscillation (kHz QPO) frequency on accretion-related parameters in the ensemble of neutron-star low-mass X-ray binaries. Based on the mass accretion rate, M, and the ...
    • A new hybrid nonlinear congruential number generator based on higher functional power of logistic maps 

      We propose a nonlinear congruential pseudorandom number generator consisting Of summation of higher order composition of random logistic maps under certain congruential mappings. We change both bifurcation parameters of ...
    • A new method for calculating fuel consumption and displacement of a ship in maritime transport 

      Mersin, Kadir; Alkan, Güler; Mısırlıoğlu, Remzi Tunç (Taylor & Francis As, Karl Johans Gate 5, No-0154 Oslo, Norway, 2017-12-11)
      Fuel consumption is the most important parameter which is effected by the petrol prices. Optimization of the sailing speed decreases the fuel cost because it is proportional to the sailing speed. In this study, the present ...
    • A Note On A Problem Of Abramovich, Aliprantis And Burkinshaw 

      Çağlar, Mert; Mısırlıoğlu, Tunç (Springer, Van Godewijckstraat 30, 3311 Gz Dordrecht, Netherlands, 2011-09)
      Let B and T be two positive operators on a Banach lattice such that B is compact-friendly and T is locally quasi-nilpotent. Introducing the concept of positive quasi-similarity, we prove that T has a non-trivial closed ...
    • A note on certain analytic functions 

      Nunokawa, M.; Owa, Shigeyoshi; Polatoğlu, Yaşar (International Short Joint Research Workshop, Study on Calculus Operators in Univalent Function Theory, 2007, Research Institute for Mathematical Sciences, Kyoto University (RIMS), Kyoto, Japan, 2007)
    • A possible link between kHz quasi-periodic oscillations and the magnetospheric boundary 

      Erkut, Mehmet Hakan (E D P Sciences, 17 Ave Du Hoggar Parc D Activites Coutaboeuf Bp 112, F-91944 Cedex A, France, 2014)
      The quasi-periodic oscillations (QPOs) observed with a 200-1300 Hz frequency range in the X-ray power spectra of low mass X-ray binaries (LMXBs) might be considered as one of the observational clues to the physics at the ...
    • A Proposal to Extend Brodmann's Areas Concept to a New Model 

      Başar, Erol; Düzgün, Aysel; Güntekin, Bahar (Anka Publisher, 116-11 Sok No.10 K 2 D 2, Bornova, Izmir 35050, Turkey, 2014)
      Since the beginning of the last century, the localization of brain function is presented by Brodmann areas, or maps that are a result of anatomic organization. They are used in order to give a global idea of cortical ...
    • A Remark on multivalently convex and starlike functions 

      Nunokawa, Mamoru; Owa, Shigeyoshi; Polatoğlu, Yaşar; Yavuz Duman, Emel (2007-01)
      Applying the result for certain analytic functions due to M. Nunokawa [Proc. Japan Acad. 68A, 152–153 (1992; Zbl 0773.30020)], some properties for multivalently convex and starlike functions ar discussed.