background and purpose: many workers are exposed to workplace hazards. many occupational diseases are preventable by personal protective devices (ppds). though many workers do not use ppds or their protection by ppds is not sufficient. this study was designed to assess the quality of ppds usage among industrial workers. materials and methods: in a cross-sectional study, 648 workers from four ma...

We present a density functional theory (DFT) based study of two-dimensional phase chromium bismuthate (CrBi), previously unknown material with exceptional magnetic and magnetooptical characteristics. Monolayer CrBi is ferromagnetic metal strong spin-orbit coupling induced by the heavy bismuth atoms, resulting in strongly anisotropic Ising-type ordering Curie temperature estimated to be higher t...

background: intrauterine device (iud) is an effective and long term method of contraception that can be used without continued effort by the user to prevent pregnancy perfectly. pain during iud insertion is one of the obstacles to properly using the device. thus, using different methods of analgesia and anesthesia to alleviate this pain has been studied by many researchers. this review article ...

In this paper, we report on the synthesis of terbium sesquioxide (Tb2O3) nanopowder by laser ablation a solid target material in Ar gas flow using an ytterbium fiber with average power 300 W. The as-synthesized nanoparticles featured spherical morphology, size 13 nm and substantially monoclinic crystal structure, whose symmetry was converted into cubic heat treatment at 850°C under vacuum. Pres...