Toplam kayıt 287, listelenen: 1-20

    • 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 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 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 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 

      Çeçen, Songül; Demirer, R. Murat; Bayrak, Coşkun (PERGAMON-ELSEVIER SCIENCE LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND, 2009-10-30)
      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 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 representation of cyclically compact operators on Kaplansky-Hilbert modules 

      Gönüllü, Uğur (Springer Basel Ag, Picassoplatz 4, Basel, 4052, Switzerland, 2016-01)
      We give a representation of cyclically compact self-adjoint operators on Kaplansky-Hilbert modules and characterize the global eigenvalues of such operators by a sequence consisting of their global eigenvalues taken in the ...
    • A spectroscopic atlas of Deneb (A2 lae) lambda lambda 3826-5212 

      Albayrak, B.; Gulliver, A. E.; Adelman, S. J.; Aydin, C.; Kocer, D. (E D P SCIENCES, 7, AVE DU HOGGAR, PARC D ACTIVITES COURTABOEUF, BP 112, F-91944 LES ULIS CEDEXA, FRANCE, 2003-03)
      We present a spectroscopic atlas of Deneb (A2 Iae) obtained with the long camera of the 1.22-m telescope of the Dominion Astrophysical Observatory using Reticon and CCD detectors. Forlambdalambda3826-5212 the inverse ...
    • A vibrational spectroscopic investigation on benzocaine molecule 

      Balcı, Kubilay; Akyüz, Sevim (ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS, 2008-11-20)
      The stable conformers of free benzocaine molecule in electronic ground state were searched by means of successive single point energy calculations carried out at B3LYP/3-21G level of theory. The obtained calculation results ...
    • A vibrational spectroscopy study on 3-aminophenylacetic acid by DFT calculations 

      Akkaya, Yasemin; Balcı, Kubilay; Gören, Yeliz; Akyüz, Sevim (Pergamon-Elsevier Science Ltd, The Boulevard, Langford Lane, Kidlington, Oxford Ox5 1Gb, England, 2015-08-05)
      In this study, in which the group vibrations of 3-aminophenylacetic acid were investigated by electronic structure calculations based on Density Functional Theory (DFT), the possible stable conformers of the molecule were ...
    • A vibrational spectroscopy study on anserine and its aqueous solutions 

      Akkaya, Yasemin; Balcı, Kubilay; Gören, Yeliz; Akyüz, Sevim; Stricker, Moogega C.; Ritzhaupt, G.; Stover, D. D.; Collier, W. B. (Pergamon-Elsevier Science Ltd, The Boulevard, Langford Lane, Kidlington, Oxford Ox5 1Gb, England, 2015-10-05)
      In this study based on vibrational spectroscopic measurements and Density Functional Theory (OFF), we aimed for a reliable interpretation of the IR and Raman spectra recorded for anserine in the solid phase and water (H2O) ...
    • 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 ...
    • Adsorption and interaction of 2-aminopyridine with loughlinite (Na-sepiolite) from Anatolia 

      Akyüz, Sevim; Akyüz, Tanıl (ASIAN JOURNAL OF CHEMISTRY, 11/100 RAJENDRA NAGAR, SECTOR 3,, SAHIBABAD 201 005, GHAZIABAD, INDIA, 2008-06)
      FT-IR spectroscopy has been used to characterize adsorption and interaction of 2-aminopyridine by loughlinite, which belongs to palygorskite-sepiolite group of phyllosilicates class of clay minerals. The spectroscopic ...
    • Adsorption and interaction of 5-fluorouracil with montmorillonite and saponite by FT-IR spectroscopy 

      Akalın, Elif; Akyüz, Tanıl; Akyüz, Sevim (ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS, 2007-05-27)
      Adsorption of 5-fluorouracil (5-FU) on montmorillonite and saponite has been investigated using FT-IR spectrometry. The intercalation of 5-FU within montmorillonite or saponite has been shown by X-ray diffraction to increase ...
    • Adsorption Of 3-And 4-Aminopyridine On Loughlinite-An IR Spectroscopic Study 

      Akyüz, Sevim; Akyüz, Tanıl (Elsevier Science Bv, Po Box 211, 1000 Ae Amsterdam, Netherlands, 2010-05-26)
      In this study adsorption of 3- and 4-aminopyridine on loughlinite (Na-sepiolite) have been investigated by FT-IR spectroscopy. Spectroscopic results indicate that sorbed aminopyridine molecules onto loughlinite are coordinated ...
    • Adsorption Of Isoniazid Onto Sepiolite-Palygorskite Group Of Clays: An IR Study 

      Akyüz, Sevim; Akyüz, Tanıl; Akalın, Elif (Pergamon-Elsevier Science Ltd, The Boulevard, Langford Lane, Kidlington, Oxford Ox5 1Gb, England, 2010-04)
      The adsorption of isoniazid (INH) on sepiolite, loughlinite (natural Na-sepiolite) and palygorskite from Anatolia was investigated by FT-IR spectroscopy. Experimental results indicated that INH molecules, adsorbed on ...
    • An Experimental And Theoretical Vibrational Spectroscopic Study On Niflumic Acid, A Non-Steroidal Anti-İnflammatory Drug 

      Balcı, Kubilay; Akkaya, Yasemin; Akyüz, Sevim (Elsevier Science Bv, Po Box 211, 1000 Ae Amsterdam, Netherlands, 2010-07-20)
      The theoretically possible stable conformers of niflumic acid (NFA) molecule in electronic ground state were investigated by means of potential energy surface scan and thermochemistry calculations carried out at room ...