Search Results

Now showing 1 - 10 of 10
  • Article
    Citation - WoS: 1
    Citation - Scopus: 1
    Hole-Polar Phonon Interaction Scattering Mobility in Chain Structured Tlse0.75s0.25< Crystals
    (Wiley-blackwell, 2009) Qasrawi, A. F.; Gasanly, N. M.
    In this study, the electrical resistivity, charge carriers density and Hall mobility of chain structured TlSe0.75S0.25 crystal have been measured and analyzed to establish the dominant scattering mechanism in crystal. The data analyses have shown that this crystal exhibits an extrinsic p-type conduction. The temperature-dependent dark electrical resistivity analysis reflected the existence of three energy levels located at 280 meV, 68 meV and 48 meV. The temperature dependence of carrier density was analyzed by using the single donor-single acceptor model. The carrier concentration data were best reproduced assuming the existence of an acceptor impurity level being located at 68 meV consistent with that observed from resistivity measurement, The model allowed the determination of the hole effective mass and the acceptor-donor concentration difference as 0.44m(0) and 2.2 x 10(12) cm(-3), respectively. The Hall mobility of the TlSe0.75S0.25 crystal is found to be limited by the scattering of charged carriers over the (chain) boundaries and the scattering of hole-polar phonon interactions above and below 300 K, respectively. The value of the energy barrier height at the chain boundaries was found to be 261 meV. The polar phonon scattering mobility revealed the high-frequency and static dielectric constants of 13.6 and 15.0, respectively. (C) 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
  • Conference Object
    Ph-Dependent Conformational Changes and Thermal Stability of Outer Membrane Protein G Mutants by Fourier Transform Infrared Spectroscopy
    (Wiley-blackwell, 2016) Yilmaz, I.; Yildiz, O.; Korkmaz, F.
    [No Abstract Available]
  • Article
    Citation - WoS: 3
    Citation - Scopus: 3
    Transport and Recombination Kinetics in Tlgate2 Crystals
    (Wiley-blackwell, 2009) Qasrawi, A. F.; Gasanly, N. M.
    In this work, the transport and recombination mechanisms as well as the average hole-relaxation time in TlGaTe2 have been investigated by means of temperature-dependent dark electrical conductivity, photoexcitation intensity-dependent photoconductivity, and Hall effect measurements, respectively. The experimental data analysis revealed the existence of a critical temperature of 150 K. At this temperature, the transport mechanism is disturbed. The dark conductivity data analysis allowed the determination of an energy state of 258 meV The hole-relaxation time that was determined from the Hall mobility data was observed to increase with decreasing temperature. The behavior was attributed to the hole-thermal lattice scattering interactions. At fixed photoexcitation intensity, the photocurrent I-ph decreases with decreasing temperature down to 150 K. Below this temperature it changes direction. The latter data allowed the determination of the recombination center energy as 1 10 meV On the other hand, at fixed temperature and variable illumination intensity, the photocurrent follows the relation I-ph alpha F-n (the value of the exponent, it, decreases with decreasing temperature). (C) 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
  • Review
    Citation - WoS: 55
    Citation - Scopus: 59
    The Development of Ring Rolling Technology - Part 2: Investigation of Process Behaviour and Production Equipment
    (Wiley-blackwell, 2005) Allwood, JM; Tekkaya, AE; Stanistreet, TF
    This is the continuation of a thorough survey of work on ring rolling published in the English and German languages up to 2004 [see No. 2/3, p. 111-120]: The methods used to investigate the process are reviewed, separated into experimental and theoretical categories; the insights gained from these investigations are organised according to the challenges identified at the outset; developments in the control and operation of the process are described. Having given a set of ideal targets for the process, the state of current knowledge about ring rolling is assessed in order to predict likely developments: process modelling capability is nearly able to predict rolling behaviour for a complete cycle with sufficient accuracy to allow effective use of models for design of rolling schedules and preforms; analysis of material behaviour is relatively mature for steel rings, but has scope for significant extension for titanium and aluminium alloys and composites; design choices that seek to extend the flexibility of the process have had some exploration, but could be extended.
  • Conference Object
    Kinetics Studies on Glyceraldehyde Concentration of Bovine Lens Aldose Reductase
    (Wiley-blackwell, 2011) Onay, M.; Onay, M.; Coruh, N.; Isgor, S. B.
    [No Abstract Available]
  • Article
    Citation - WoS: 1
    Citation - Scopus: 3
    Calculation of Resonant Frequencies of a Shorting Pin-Loaded Etma With Ann
    (Wiley-blackwell, 2014) Can, Sultan; Kapusuz, Kamil Yavuz; Aydin, Elif
    [No Abstract Available]
  • Conference Object
    The Effect of Doxazosin on Selected Kinase and Glutathione Transferases To Evaluate Its Potential for Therapeutic Use in Various Cancers
    (Wiley-blackwell, 2011) Isgor, Y. G.; Isgor, B. S.
    [No Abstract Available]
  • Conference Object
    Glutathione S-Transferase Inhibitory Activity of Novel Platinum Complexes With Ligands of Oxime Derivatives
    (Wiley-blackwell, 2011) Isgor, B. S.; Ozalp-Yaman, S.
    [No Abstract Available]
  • Article
    Citation - WoS: 10
    Citation - Scopus: 13
    Who Voted for Whom? Comparing Supporters of Obama and Mccain on Value Types and Personality Traits
    (Wiley-blackwell, 2012) Dirilen-Gumus, Ozlem; Cross, Susan E.; Donmez, Ali
    This study investigates the personalities and values of Obama and McCain supporters in the 2008 election. A total of 278 American participants completed the Big Five Inventory and the Portrait Values Questionnaire along with demographic items. For value types, Obama supporters were more likely to endorse universalism values and less likely to endorse tradition, conformity, and security values compared with McCain supporters. With regard to personality traits, Obama supporters scored higher on agreeableness and lower on conscientiousness than did McCain supporters. As predicted, logistic regression revealed that values were better predictors of voting preference than were personality traits. These findings demonstrate the importance of individual differences in political preferences and are discussed with regard to findings in other cultures.
  • Conference Object
    Insulin and Heparin Bioactivation of 3d Nwpf Discs by Water/O2 Plasma for I929 Fibroblast Cell Cultivation
    (Wiley-blackwell, 2010) Sasmazel, H. Tuerkodlu; Manolache, S.; Gumupdereliodlu, M.
    [No Abstract Available]