Güncel Gönderiler: FEF, Fizik Bölümü Koleksiyonu
Toplam kayıt 337, listelenen: 201-220
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Annual effective dose and concentration levels of gross alpha and beta in Turkish market tea
(Ijrr-Iranian Journal Radiation Res, 2012)Background: Tea is one of the most popular beverages all over the world which is prepared from the leaves of a shrub camellia sinensis. Eastern Black Sea Region of Turkey which account for around 100% of all tea production ... -
Effect of zirconium diffusion on the microstructural and superconducting properties of YBa2Cu3O7-delta superconductors
(Elsevier Science Sa, 2012)This study reports not only the role of zirconium (Zr) diffusion on the superconducting, physical and microstructural properties of YBa2Cu3O7-delta (Y123) bulk superconductors prepared by the conventional solid-state ... -
Bıomonıtorıng of heavy metals by moss and soıl around Afsın-Elbıstan coal-fıred power plant ın the east-medıterranean regıon of Turkey
(Parlar Scientific Publications (P S P), 2013)This research investigated heavy metal pollution around the Afsin-Elbistan coal-fired power plant, one of the most important energy power plants in Turkey, by means of analyzing moss and soil samples collected in the ... -
Gross alpha and beta activities of airborne particulate samples from Wawel Royal Castle Museum in Cracow, Poland
(Springer, 2013)PM-10, PM-2.5 and PM-1.0 concentrations were measured over an 8 h period at sites both inside and outside the museum of Wawel Royal Castle in Cracow, Poland. Gross alpha (alpha) and beta (beta) activities seemed to vary ... -
A theoretical study for temperature dependence of levitation force of high-T-c superconductors
(Elsevier, 2013)The temperature effect on the levitation force of a cylindrical type-II superconductor was investigated theoretically by solving the critical state equation. Analytical expressions are obtained for the levitation force ... -
Magnetization of Gd diffused YBa2Cu3O7-x superconductor: experiment and theory
(Iop Publishing Ltd, 2013)The magnetization of Gd diffused YBa2Cu3O7-x is measured by a vibrating sample magnetometer (VSM) at selected temperatures (5, 25, 50, 77 K). the experimental results for the magnetization are analyzed in the critical state ... -
Analysis of indentation size effect (ISE) behavior in low-load Vickers microhardness testing of (Sm123)(1-x)(Nd123)(x) superconductor system
(Springer, 2013)Indentation size effect (ISE) for (Sm123)(1-x) (Nd123)(x) superconducting samples which were fabricated by the solid state reaction technique for values of x = 0.00, 0.05, 0.10, 0.20, and 0.30 was investigated by analyzing ... -
Effect of substitution and heat treatment route on polycrystalline FeSe0.5Te0.5 superconductors
(Springer, 2013)The effect of atomic substitution of Te in iron based superconductors FeSe (1: 1 type), which exhibits the simplest crystal structure among the iron-based superconductors, has been investigated in terms of structural, ... -
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 ... -
Effects of ultraviolet light on B-doped CdS thin films prepared by spray pyrolysis method using perfume atomizer
(Elsevier Science Bv, 2013)Boron doped CdS thin films were deposited by spray pyrolysis method using perfume atomizer. the effects of ultraviolet light on the structural, optical and electrical properties of B-doped CdS thin films were investigated ... -
Accumulation of metals in roadside soil, dust and pine needles in different characteristic traffic areas
(Parlar Scientific Publications (P S P), 2014)Heavy metal levels and sources of contamination were investigated in different roadside locations from Ankara and Bursa metropolitan cities in Turkey. A state of the art energy dispersive X-ray fluorescence (EDXRF) ... -
Validation of classical quantitative fundamental parameters method using multivariate calibration procedures for trace element analysis in ED-XRF
(Royal Soc Chemistry, 2014)In this study, the X-ray intensities obtained from 76 soil samples were converted to concentrations by means of the Epsilon software program applying the fundamental parameters method (FP). Various National Institute of ... -
Precision and accuracy of ST-EDXRF performance for As determination comparing with ICP-MS and evaluation of As deviation in the soil media
(Pergamon-Elsevier Science Ltd, 2014)The present study was conducted to (i) determine the precision and accuracy of arsenic measurement in soil samples using ST-EDXRF by comparison with the results of ICP-MS analyses and (ii) identify the relationship of As ... -
Synthesis and fabrication of Mg-doped ZnO-based dye-synthesized solar cells
(Springer, 2014)Undoped and 2, 4 and 6 at.% Mg-doped ZnO nanorods were successfully deposited on ZnO seeded fluorine tin oxide substrates by a simple chemical bath deposition technique to form a photoanode. It was seen that all the samples ... -
Determination of natural radioactivity levels of some concretes and mineral admixtures in Turkey
(Asian Journal of Chemistry, 2014)Nine concrete samples with or without mineral admixtures have been analyzed for their naturally occurring radionuclide of Ra-226, Th-232 and K-40 using HPGe gamma spectrometry. Also, concrete raw materials such as aggregate, ... -
Investigation on the levitation force behaviour of malic acid added bulk MgB2 superconductors
(Elsevier, 2014)The effects of malic acid addition (from 0 to 15 wt% of the total MgB2) on the levitation force properties of bulk MgB2 have been investigated. All samples were prepared from magnesium powder, amorphous boron powder, malic ... -
Effects of initial cooling conditions and measurement heights on the levitation performance of bulk MgB superconductor at different measurement temperatures
(Springer/Plenum Publishers, 2014)The levitation properties of MgB prepared by hot press at 200 C and then pellet/closed tube method has been investigated. the vertical and lateral levitation forces ( and on a cylindrical NdFeB permanent magnet (PM) below ... -
Erratum to: Synthesis and fabrication of Mg-doped ZnO-based dye-sensitized solar cells(J Mater Sci: Mater Electron, (2014), 25, 3173-3178, DOI 10.1007/s10854-014-2000-5)
(Springer, 2014)Abstract Undoped and 2, 4 and 6 at.% Mg-doped ZnO nanorods were successfully deposited on ZnO seeded fluorine tin oxide substrates by a simple chemical bath deposition technique to form a photoanode. It was seen that all ... -
Comparison of levitation forces of bulk MgB2 superconductors produced by nano boron and carbon-doped nano boron
(Springer, 2014)MgB2 bulk superconductors were prepared by hot press plus furnace heating method. Two types of boron powders were used, one is amorphous nano boron and the other is C-doped boron. Characteristics of superconductors were ... -
Investigation of Cd1-xCoxS diluted magnetic semiconductor thin films fabricated by chemical bath deposition method
(Elsevier Science Sa, 2014)Chemical bath deposition method was used for preparation of Cd1-xCoxS thin films. the effects of Co doping and thermal annealing on structural, optical, electrical and magnetic properties of CdS thin films were investigated. ...