Başlık için FEF, Fizik Bölümü Koleksiyonu listeleme
Toplam kayıt 327, listelenen: 279-298
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Radionuclides and heavy metals concentrations in Turkish market tea
(Elsevier, 2011)Tea is one of the most popular beverages in the world. The Eastern Black Sea Region of Turkey is one of the main tea producers in Turkey and the fifth in the world. Thus, the chemical components in tea have received great ... -
A reactor antineutrino detector based on hexagonal scintillator bars
(Elsevier, 2020)This study presents a new concept of segmented antineutrino detector based on hexagonal plastic scintillator bars for detecting antineutrinos from a nuclear reactor core. the choice of hexagonal scintillator bars is original ... -
A research on growth and characterization of CdS:Eu thin films
(Springer Heidelberg, 2019)Chemical spray pyrolysis-grown CdS thin films including various quantities of Eu atoms (from 0 to 10at.%) were synthesized on glass slides. the detailed physical properties of the produced CdS and CdS:Eu thin films were ... -
Resonant tunneling properties of inverted Morse double quantum barrier
(Elsevier Science Bv, 2018)We study resonant tunneling characteristics of inverted Morse double quantum barrier structures. the effect of electric bias and structure parameters is calculated by using non-equilibrium Green's function method. Results ... -
Role of coexistence of superconductivity and paramagnetism in magnetostriction of high-T c superconductors
(Springer, 2008)Total magnetostriction in the superconducting state for high-T c superconductors has been separated into critical state and paramagnetic components in terms of a H (x) dependent magnetic flux density. We show that the ... -
Role of diffusion-annealing time on the mechanical properties of bulk Bi-2223 superconductors diffusion-doped with Au
(2007)In order to investigate the role of Au doping and diffusion-annealing durationon the mechanical properties of Bi-Pb-Sr-Ca-Cu-O, Bi 1.8Pb0.35Sr1.9Ca2.1Cu 3Oy superconductors were prepared by standard solid-state reaction ... -
Role of Mg doping in the structural, optical, and electrical characteristics of ZnO-based DSSCs
(2017)ZnO- and Mg-doped ZnO samples are prepared by spray pyrolysis on conducting glass substrates to fabricate ZnO-based dye-sensitized solar cells (DSSCs). In uences of Mg-doping content on the power conversion efficiencies ... -
Role of the local structure in superconductivity of LaO0.5F0.5BiS2-xSex system
(Iop Publishing Ltd, 2017)We have studied the local structure of LaO0.5F0.5BiS2-xSex by Bi L-1-edge extended x-ray absorption fine structure (EXAFS). We find a significant effect of Se substitution on the local atomic correlations with a gradual ... -
Role of the radio frequency magnetron sputtered seed layer properties on ultrasonic spray pyrolyzed ZnO thin films
(Elsevier Science Sa, 2017)Herein, we investigated structural and electrical properties of ultrasonic spray pyrolyzed ZnO thin films (ZnO (USP)) deposited on radio frequency sputtered ZnO nanocolumns (ZnO(Seed)) under various oxygen atmosphere on ... -
Sediment distribution coefficients (K-d) and bioaccumulation factors (BAF) in biota for natural radionuclides in eastern Black Sea coast of Turkey
(Elsevier, 2019)y Germanium (HPGe) detector was used to measure natural (Ra-226, Th-232 K-40) radioactivity levels in sediment and seawater samples, and soft tissues of Mediterranean mussels (Mytilus galloprovincialis) of three different ... -
Selective radiation measurement for safety evaluation on base stations
(Gazi University, 2013)In this paper, general information about unionized radiation, standards and measurement routines for wireless communication systems, electromagnetic fields and antenna structures are given. The safety of mobile phones has ... -
Semi-conductive carbon from industrial tea waste biomass for a p-n junction
(Springer, 2024)Some semiconducting carbonaceous material was developed from industrial tea waste biomass by catalytic pyrolysis and heteroatom doping; then, a p-n junction was realized on an n-type Si substrate. I-V characteristics of ... -
Sequential forward mother wavelet selection method for mental workload assessment on N-back task using photoplethysmography signals
(Elsevier, 2021)The increasing demands of a cognitive task require additional brain resources. This demand, known as mental workload, can lead to deteriorated task performance. Therefore, assessment of mental workload can provide a proper ... -
Simulation and efficiency studies of optical photon transportation and detection with plastic antineutrino detector modules
(Elsevier Science Bv, 2018)In this work, the simulation of optical photons is carried out in an antineutrino detector module consisting of a plastic scintillator connected to light guides and photomultipliers on both ends, which is considered to be ... -
Single-molecule-resolution ultrafast near-field optical microscopy via plasmon lifetime extension
(AIP Publishing, 2021)Metal nanostructures support plasmon oscillations on their surfaces, which normally decay very quickly. Nevertheless, the lifetime of these oscillations can be extended near a longer lifetime particle, e.g., a molecule. ... -
Sipping tests for the irradiated fuel elements of the TR-2 research reactor
(Carl Hanser Verlag, 2011)Sipping tests have been performed for fuel elements of the TR-2 reactor at Çekmece Nuclear Research and Training Center (CNRTC), in order to find out which one failed in the core. A sipping assembly has been constructed ... -
The size effect on the magnetic levitation force of MgB2 bulk superconductors
(Elsevier Sci Ltd, 2016)In this study, the size effect on the magnetic levitation performance of disk-shaped MgB2 bulk superconductors and permanent magnets was investigated. MgB2 samples with varying diameters of 13 mm, 15 mm and 18 mm, each of ... -
Sm-doped CdS thin films prepared by spray pyrolysis: a structural, optical, and electrical examination
(Springer, 2018)Virgin and Sm-doped CdS thin films were prepared by spray pyrolysis route on glass substrates. the influences of Sm-doping amount on structural, topographical, optical and electrical properties were examined. It was found ... -
Sn diffusion coefficient and activation energy determined by way of XRD measurement and evaluation of micromechanical properties of Sn diffused YBa2Cu3O7-x superconducting ceramics
(Springer, 2013)This study manifests not only the effect of Sn diffusion on physical, electrical, mechanical, structural and superconducting properties of the bulk YBa2Cu3O7-x (Y123) superconductors prepared by the conventional solid-state ... -
Spectrum analyzer measurement technique for safety evaluation on wireless communication systems
(IEEE, 2011)In this paper, general information about, unionized radiation, wireless communication systems and electromagnetic fields are given. The safety of mobile phones has been evaluated in terms of specific absorption ratio (SAR). ...
