background and aims. polymerization efficacy affects the properties and performance of composite resin restorations. the purpose of this study was to evaluate the effectiveness of polymerization of two micro-hybrid, two nano-hybrid and one nano-filled ormocer-based composite resins, cured by two different light-curing systems, using fourier transformation infrared (ft-ir) spectroscopy and vicke...

introduction: the aim of this study was to in-vestigate the effect of irradiation duration and distance of light tip to prepared samples in two different light curing unites on the degree of conversion of resin composite. materials and methods: conventional halogen and blue light emitting diode (led) units were used for polymerization of an opalis resin com-posite. the conversion measurements w...

background: the seminal plasma is an excellent source for noninvasive detection of spermatogenesis. the seminal plasma of normospermic and azoospermic men has been analyzed for detection of spermatogenesis. methods: optical spectroscopy (attenuated total reflectance-infrared spectroscopy (atr-ir) and fourier transform infrared spectroscopy (ft-ir) has been used to analyze the seminal plasma and...