Cilt:05 Sayı:02 (2018)
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Item Implementation of Nuclear Power Plants instead of “Kosovo A and B” Power Plants as the only Rescue of Coal Resources in the Republic of Kosovo(Ankara : Ankara Üniversitesi, 2018) Beluli, V. M.; Fen FakültesiKosovo as a state in Europe poses a serious problem of air pollution, due to the production of electricity from Kosovo A and Kosovo B coal fired-power plants, which use coal as fuel. Although Kosovo possesses large coal reserves, the monetary income from the production of electric power from the Coal-Fires Power Plants is very low and too much coal spending, which is a huge resource loss as well as a very valuable natural resource for future generations. Implementation of nuclear reactors may bring profits to this country and coal could have been sold as a raw material in various sectors, thus probably the state could earn about half a billion euros each year, this is due to the non-construction of a nuclear power plant. Kosovo is losing more than 2 billion amounts euro of coal-fired coal for 18 years due to coal-fired power plants. During 2017, Kosovo produced 5 300 000 MWh of electricity. Kosovo had also extracted 8 million tons of coal to produce electricity, while a nuclear reactor needs about 264.99 kg of 235U per year. The aim of this research is to highlight the increment of the price of electricity in the region of Kosovo and therefore standing as a big obstacle to foreign investment.Item Systematic Study of the Thermal Pairing Re-entrance in the 72Ti Nucleus(Ankara : Ankara Üniversitesi, 2018) Belabbas, M.; Margueron, J.; Fen FakültesiFinite-temperature Hartree-Fock-Bogoliubov calculations are performed in 72Ti by using Skyrme interactions, to predict the finite-temperature pairing re-entrance phenomenon for the system of neutrons. It is also shown that pairing re-entrance modifies the neutron single-particle energies around the Fermi level, as well as the occupation numbers and quasiparticle levels. It is also shown that neutron resonant states are expected to contribute substantially to pairing correlations and the two predicted critical temperatures are 1 0.1 0.2 T MeV c and T MeV c2 0.7 0.9 . On the other hand, our results for the ground-state energies, proton and neutron separation energies are in very good agreement with experiment where available.Item Determination of the Mass Attenuation Coefficient, Effective Atomic Number and Electron Density for Manganese Nano Hydroxyapatite by using 778-1457 keV Gamma Rays(Ankara : Ankara Üniversitesi, 2018) Koksal, O. K.; Cengiz, E.; Apaydın, G.; Tozar, A.; Karahan, İ. H.; Fen FakültesiIn this study, manganese nano substituted hydroxyapatite artificial bone powders (nMnHAp) have been investigated experimentally by means of mass attenuation coefficients, effective atomic numbers and electron densities. The samples were irradiated using 778 keV, 964 keV, 1085 keV, 1112 keV, 1408 keV and 1457 keV gamma photons from 152Eu source .The gamma photons from the source were counted by using a HPGe gamma-ray spectroscopy. The mass attenuation coefficients of the hydroxyapatites artificial bone powders (including hydroxyapatite without any substituted metal and real bone powder) were compared with each other. This study has been dealt with as a guide to medical field. Also the results have been evaluated in terms of the electron density and effective atomic number.Item Variations in Luminescence Sensitivity of Various Quartz Samples from Southwestern Nigeria(Ankara : Ankara Üniversitesi, 2018) Oniya, E. O.; Fen FakültesiThis research was undertaken to investigate the sensitivity of Thermoluminescence (TL), Optically Stimulated Luminescence (OSL) and Infra-Red Stimulation Luminescence (IRSL) of twelve (12) quartz samples from different locations in the Southwestern part of Nigeria. This was done with a motive to survey the provenance suitability of each one of them for luminescence dating. All the luminescence measurements on the 12 quartz samples were carried out using a Risø TL/OSL read (model TL/OSL-DA-15). Each of the samples displayed different range of luminescence responses to the same test dose. The sensitivity of the TL and OSL did not follow identical pattern for all the samples but that of LMOSL and CW-OSL demonstrated nearly identical pattern. Effect of feldspar inclusion seemed passive in TL but highly active in OSL most especially fast component. The two samples that exhibited highest OSL signal failed to pass feldspar inclusion test. The significance of feldspar inclusion in SAR protocols was stressed. Further studies on the samples at varying test doses may improve the understanding of the behaviour of these samples.