[Study on the pressure on ceramic veneers during cementation].

Objective: The aim of the study is measuring the magnitude and determining the method of finger pressure exerted by doctors on ceramic veneers during their fixation.

Material And Methods: A simulation model was designed in order to measure the volume of finger pressure. Veneers were produced for 2 central incisors.

Preparation of anisotropic AgNWs/PVA/AgS nanocomposites a vapor-phase sulfidation process.

This study used a modified polyol technique to synthesize silver nanowires (AgNWs), which were subsequently mixed with polyvinyl alcohol (PVA) polymer and air-dried under ambient conditions. As a result, AgNWs/PVA nanocomposites with a concentration of 2% were prepared by a casting process. After that, the upper surface of the produced samples was treated with HS gas, as a result of which asymmetric structures were formed depending on the gas concentration, exposure time and penetration into the layers.

Effect of sulphidation process on the structure, morphology and optical properties of GO/AgNWs composites.

In this study, composite materials composed of graphene oxide (GO) synthesized by a modified Hummers' method and silver nanowires (AgNWs) synthesized by a modified polyol method were prepared. The prepared composites were subjected to sulfidation under the influence of HS gas. Structural changes in the samples were evaluated using X-ray diffraction (XRD).

Synthesis of CuCoO nanoparticles by a sonochemical method and characterization of structural and optical properties and photocatalytic activity for the degradation of methylene blue.

In the present investigation, CuCoO ( = 0, 0.02, 0.04, 0.

Features of structure and optical properties GO and a GO/PVA composite subjected to gamma irradiation.

In this study, a modified Hummers' method was employed to prepare graphene oxide (GO), which was then mixed with polyvinyl alcohol (PVA) polymer at varying weight concentrations (1 wt% and 5 wt%). The prepared GO and GO/PVA nanocomposite films were subjected to gamma (γ) radiation at different doses (10, 500, and 1500 kGy) to analyze the effects on their structure and optical properties. The structural changes in the nanocomposites were analyzed using X-ray diffraction (XRD), allowing for the determination of any alterations resulting from exposure to radiation at different doses.