OBJECTIVES After presbycusis, noise exposure is considered the second cause of sensorineural hearing loss. Due to exposure to high-intensity sounds, musicians may be at risk of noise-induced hearing loss (NIHL). Given the importance of good hearing in music career, this study aimed to investigate the frequency of hearing loss and use of protective measures among Iranian musicians. METHODS In ...

Young athletes with ever-changing transitional dentitions and those wearing fixed orthodontic appliances can benefit from custom-formed protective mouthguards. Modifications of the traditional vacuum-forming method are useful to fabricate mouthguards for such patients and extend the useful life of these devices. The purpose of this case report is to document fabrication of custom-formed protect...

Medical devices often need some form of protection from their immediate environment. However, with small, complex, and sensitive components, the application of a protective coating is not a trivial matter. This article discusses the problem and describes a solution.

n-hexane neuropathy has been described after glue sniffing and industrial exposure. onset may be subacute and reminiscent of guillain-barre' syndrome. five patients (15-18 years old) presented with paresthesia, severe weakness of the extremities particularly lower extremities, as well as muscular atrophy, total areflexia and gait disturbances were admitted in hospital in march 2003. all of thes...

This work is devoted to the problem of effect a powerful ultra-short duration electromagnetic radiation on superconducting protection device as load antenna-feeder circuit radioelectronic systems. The above used in monitoring systems land surface benefit agriculture, geodesy, mapping, and ocean surfaces, and, also, atmospheric layers, remote control engineering industry related branches. goal w...

background: formaldehyde is one of the most serious air contaminant that can be found everywhere. some of the source of formaldehyde include product of building materials, decorated materials, cigarette smoke, etc. aldehydes compounds especially formaldehyde are used as disinfectants for sterilization in different industries. in this study we measured formaldehyde workplace exposure with niosh ...