Background and Purpose: Afghanistan has high maternal mortality that woman's empowerment and social support could reduce. This study aimed to determine the relationship between empowerment and social support in pregnant women who came to governmental hospitals in Kabul City, Afghanistan. Materials and Methods: A cross-sectional study was conducted in 4 governmental hospitals in Kabul, Afghanis...

PURPOSE To measure the surface loss of dental restorative zirconia and the short-term bond strength between an indirect composite resin (ICR) and zirconia ceramic after various sandblasting processes. MATERIALS AND METHODS Three hundred zirconia bars were randomly divided into 25 groups according to the type of sandblasting performed with pressures of 0.1, 0.2, 0.4 and 0.6 MPa, sandblasting t...

A tomographic heating holder for transmission electron microscopy that can be used to study supported catalysts at temperatures of up to ~1,500°C is described. The specimen is placed in direct thermal contact with a tungsten filament that is oriented perpendicular to the axis of the holder without using a support film, allowing tomographic image acquisition at high specimen tilt angles with min...

The interaction of 12 substituted phenol, three aminophenol and four substituted aniline derivatives with the corn protein zein was studied on zein-coated silica and alumina stationary phases by high-performance liquid chromatography using bidistilled water as mobile phase. Solutes were eluted from the zein-coated supports with different retention times indicating that they bind to the protein ...

Due to the synergistic effect that occurs between CNTs and alumina, CNT/alumina hybrid-filled epoxy nanocomposites show significant enhancements in tensile properties, flexural thermal conductivity. This study is an extension of previously reported investigations into nanocomposites. A series composites with different loadings were investigated regard their thermal-degradation kinetics lifetime...

Porous alumina films had been fabricated by anodizing from aluminum films after an electropolishing procedure. Alumina stripes without pores can be distinguished on the surface of the porous alumina films. The width of the alumina stripes increases proportionally with the anodizing voltage. And the pores tend to be initiated close to the alumina stripes. These phenomena can be ascribed to the e...

• As a result of grain size reduction, strength and hardness for 10Ce-1CaO 10Ce-1CaO-5Al2O3 increased compared to 10Ce-TZP. Aging resistance in all 10Ce-1CaO/ alumina composites. Measurement K I c by SEVNB VIF methods corroborate the difference between values obtained both methods. Ceria-stabilized zirconia-based composites have been developed aiming obtain ceramic materials with enhanced hardn...

Pt loaded alumina spheres, combined with a zeolite, are presented as flexible model bifunctional catalyst.

A precise control of the dimension of carbon nanotubes (CNTs) in their vertical array could enable many promising applications in various fields. Here, we demonstrate the growth of vertically aligned, single-walled CNTs (VA-SWCNTs) with diameters in the sub-1.5-nm range (0.98 ± 0.24 nm), by engineering a catalyst support layer of alumina via thermal annealing followed by ion beam treatment. We ...

γ-Alumina is widely used as an oxide support in catalysis, and palladium nanoparticles supported by alumina represent one of the most frequently used dispersed metals. The surface sites of the catalysts are often probed via FTIR spectroscopy upon CO adsorption, which may result in the formation of surface carbonate species. We have examined this process in detail utilizing FTIR to monitor carbo...