Government regulations to address technological risks are important for the successful development and application of nanotechnology, but there is an ongoing debate in the USA about who is responsible for the regulation of nanotechnology. In a mail survey of leading US nano-scientists, we examine scientists’ perceptions about nano-regulation, including the government level (local, national, or ...

objective: maintaining the health of oral tissues is a major goal in dentistry. however, limitations in dental materials, instruments, procedures and medications prevent achievement of this goal. advances in nanotechnology have paved the way to approach this goal. this study reviews the advances on nanotechnology in dentistry. review of literatures: in this review study, google scholar, pubmed,...

• Laser Powder Bed Fusion processed 4130 steels starting from gas and water atomized powders have been studied. Oxide-based inclusions were found within the steel matrix that activate ductile fracture during tensile testing. Micro-segregation of alloying elements was detected laser-processing both steels, which contributed to a local increase in microhardness. Water deliver comparable mechanica...