Güncel Gönderiler: FEF, Fizik Bölümü Koleksiyonu
Toplam kayıt 337, listelenen: 301-320
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The assessment of radioactivity and radiological hazards in soils of Bolu province, Turkey
(Taylor & Francis Ltd, 2019)The radioactivity levels in soil samples of Bolu province of north-western Turkey have been determined. There has been no information about radioactivity measurement reported in soil samples in Bolu province so far. For ... -
First-principles study of coupled effect of ripplocations and S-vacancies in MoS2
(Amer Inst Physics, 2019)Recent experiments have revealed ripplocations, atomic-scale ripplelike defects on samples of MoS2 flakes. We use quantum mechanical calculations based on density functional theory to study the effect of ripplocations 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 ... -
Magnetic properties of the spin-5/2 Blume-Capel chain in a magnetic field
(Elsevier, 2019)The magnetization plateaus and thermodynamic properties of the antiferromagnetic spin-5/2 chain system were studied by using Blume-Capel model. the system with crystal field interaction in the presence of an external ... -
Design and comparison of superconducting rf gun cavities and beam dynamics for linear electron accelerators
(Elsevier Science Bv, 2019)Designs and simulations of 1.4, 1.5, 1.6, and 1.8-cell SRF gun cavities are studied at a linear accelerator gun system and they are compared with each other. We obtain high power beam from high energy electron beam produced ... -
An analysis on the relation between the seed distance and vertical levitation force for the multi-seeded YBCO using the modified advanced frozen image (MAFI) and experimental methods
(Elsevier Science Sa, 2019)The higher magnetic levitation force and related stiffness values are very important for Maglev and magnetic bearing applications. Also, larger superconducting surface area is needed for continuous and larger magnetic ... -
Investigation of magnetic force properties between different PMGs and multi-seeded YBCO superconductors with different seed distances
(Elsevier, 2019)The magnetic levitation force in vertical direction and guidance force in lateral direction should be increased for enhancing the loading capacity and stability of Maglev systems, respectively. in this study, we have ... -
Temperature dependent local atomic displacements in NaSn2As2 system
(Iop Publishing Ltd, 2019)NaSn(2)As(2 )is mechanically exfoliable layered van der Waals (vdW) Zintl phase that is getting interesting due to its low thermal conductivity and recently observed superconductivity. Here, we have investigated the ... -
Dynamic hysteresis and compensation behaviors of the bilayer Blume-Capel model under an oscillating magnetic field
(World Scientific Publ Co Pte Ltd, 2019)Dynamic compensation and hysteresis characteristics of Blume-Capel (BC) model under an oscillating magnetic field have been studied within the dynamic mean field approximation. Spin-1 ferro-antiferromagnetic system Hamiltonian ... -
The local structure and magnetic correlations in La(Fei(1-x)Mn(x))AsO system
(Pergamon-Elsevier Science Ltd, 2019)The local structure of La(Fei(1-x)Mn(x))AsO, showing suppression of long-range magnetic order by Mn-substitution, has been studied. Extended X-ray absorption fine structure (EXAFS) measurements at As K-edge and Fe K-edge ... -
A study of the radiological baseline conditions around the planned Sinop (Turkey) nuclear power plant using the mapping method
(Springer, 2019)This study makes a first attempt at a detailed estimation of the background radioactivity level and its distribution at the Sinop nuclear power plant site. the activity concentration levels of Ra-226, Th-232, K-40 and ... -
IR laser line scanning treatments to improve levitation forces in MgTi0.06B2 bulk materials
(Elsevier Science Sa, 2019)Infrared (IR) laser-line scanning has been widely used to induce different surface microstructures in a broad range of materials. in this work, this laser configuration was applied on the surface of MgTi0.06B2 bulk samples ... -
Investigation of natural radioactivity and associated radiological hazards in ceramic sanitary ware products commercially sold in Turkey
(Taylor & Francis Ltd, 2019)All ceramic products used in the construction of buildings contain natural radioisotopes at various rates. These radioisotopes are the main source of outdoor radiation to which people living in houses or workplaces are ... -
First-principles investigation of CO and CO2 adsorption on gamma-Al2O3 supported monoatomic and diatomic Pt clusters
(Elsevier, 2020)Supported clusters of transition metal atoms are key components of heterogeneous catalysts. Understanding their interaction with small molecular species is therefore an important step in catalyst design. in this work, we ... -
Evaluation of gamma attenuation parameters and kerma coefficients of YBaCuO and BiPbSrCaCuO superconductors using EGS4 code
(Pergamon-Elsevier Science Ltd, 2020)The levels of the coefficients of the mass attenuation (mu/rho) for YBaCuO and BiPbSrCaCuO superconductors and their contents were determined theoretically, using EGS4 simulation code and the XCOM database, and experimentally ... -
Radioactivity in Kosovo honey samples
(Hard, 2020)The aim of this study was to determine naturally occurring radionuclides (K-40, Ra-226 and Th-232) and the artificial radionuclide Cs-137 in various honey samples from Kosovo. This study is of particular importance because ... -
Impact of environmental conditions on heavy metal concentration in honey samples
(Scibulcom Ltd, 2020)The aim of the present study is determination of heavy metals in honey samples with different botanic origin produced by Kosovo farmers and as well as the comparison of gathered results with the specific environmental ... -
Health risk assessment of trace elements in medicinal plants consumed as medicine and food in Rize, Turkey
(Parlar Scientific Publications (P S P), 2020)Trace element (Cd, Pb, Ni, Fe, Zn, Cu, Cr, Co and Mn) levels were measured using Inductively Coupled Plasma Optical Emission Spectrometry (ICP OES) in twelve different medicinal plants consumed as medicine and food in Rize, ... -
A case study on pollution and a human health risk assessment of heavy metals in agricultural soils around Sinop province, Turkey
(Pergamon-Elsevier Science Ltd, 2020)In the present study, the concentration levels of heavy metals such as Cr, Fe, Ni, Cu, Zn, As and Pb in soil samples collected from 88 sampling locations around Sinop Province, Turkey were measured using energy dispersive ...
