YYÜ GCRIS Basic veritabanının içerik oluşturulması ve kurulumu Research Ecosystems (https://www.researchecosystems.com) tarafından devam etmektedir. Bu süreçte gördüğünüz verilerde eksikler olabilir.

Browsing by Author "Yalcin, Zeynel"

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    Article
    Effect of Physical, Chemical and Electro-Kinetic Properties of Pumice Samples on Radiation Shielding Properties of Pumice Material
    (Pergamon-elsevier Science Ltd, 2014) Tapan, Mucip; Yalcin, Zeynel; Icelli, Orhan; Kara, Husnu; Orak, Salim; Ozvan, Ali; Depci, Tolga
    Pumice has been used in cement, concrete, brick, and ceramic industries as an additive and aggregate material. In this study, some gamma-ray photon absorption parameters such as the total mass attenuation coefficients, effective atomic number and electronic density have been investigated for six different pumice samples. Numerous values of energy related parameters from low energy (1 key) to high energy (100 MeV) were calculated using WinXCom programme. The relationship between radiation shielding properties of the pumice samples and their physical, chemical and electro-kinetic properties was evaluated using simple regression analysis. Simple regression analysis indicated a strong correlation between photon energy absorption parameters and density and SiO2, Fe2O3, CaO, MgO, TiO2 content of pumice samples in this study. It is found that photon energy absorption parameters are not related to electro-kinetic properties of pumice samples. (C) 2013 Elsevier Ltd. All rights reserved.
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    Article
    Resistivity, Esr, and Radiation Shielding Properties of the Volcanic Rock Materials
    (Hindawi Ltd, 2014) Nuhoglu, Cigdem; Tapan, Mucip; Okutan, Mustafa; Aydin, Sureyya; Yalcin, Zeynel; Icelli, Orhan; Orak, Salim
    Pumices have been used in cement, concrete, brick, and ceramic industries as an additive and aggregate material. It will be important to study pumice types by using a different tool as EPR which is a new technique for related material to be used for industrial aims. Electron spin resonance (ESR) spectra of the pumice types were taken by EMX-type spectrometer. Also, the current-voltage (I-V) and surface resistivity probe stand of the thin films was studied using a four-point probe measurements. The relationship between radiation shielding properties of the pumice samples and their surface resistivity, chemical, and electrokinetic properties was evaluated using simple regression analysis. Simple regression analysis indicated a strong correlation between surface resistivity and density and SiO2, Fe2O3, CaO, MgO, and TiO2 content of pumice samples in this study. It is found that a correlation between determined g-factor by EPR spectroscopy and radiation shielding is established for pumice samples.