Yazar "Gunduz, B." seçeneğine göre listele

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    Efficiency of different light sources to polymerise composite material
    (MANEY PUBLISHING, 2011) Yondem, I.; Usumez, A.; Gunduz, B.; Inan, O.
    The aim of this in vitro study is to examine the polymerisation efficacy of three different polymerisation units through simulated three different ceramic restorations (5 mm in diameter and 2 mm in height) by determining the degree of monomer conversion of a composite luting material. The curing efficiency was observed with Fourier transform infrared micromultiple internal reflectance spectroscopy after 24 h of polymerisation. The degree of conversion was calculated as a percentage of experimentally polymerised versus maximally polymerised composite. The degree of conversion values varied with the light source (light emitting diode, high intensity halogen and conventional halogen) (p<0.05) and the ceramic system (Cercon, IPS Empress 2 and Cerec) (p<0.05).
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    Molybdenum Speciation in Coal Bottom Ash Using a Sequential Extraction Procedure and Determination by FAAS
    (TAYLOR & FRANCIS INC, 2013) Aydin, F.; Saydut, A.; Gunduz, B.; Aydin, I.; Erdogan, S.; Hamamci, C.
    Coal bottom ash contains many elements that exist in different forms, which may change throughout the coal combustion process. This study presents the concentration and speciation of molybdenum in bottom ash of coal. Determination of total molybdenum was performed by two-stage microwave-acid digestion followed by flame atomic absorption spectrometry. A sequential extraction process to speciation of molybdenum from coal bottom ash was investigated. The most abundant form of molybdenum in samples is sulfide fraction of molybdenum. Relative abundances of the remaining fractions follow the order: Residual > Reduciple > Oxidizable > Exchangeable > Carbonate > Water soluble.