Abstract The human earcanal can accommodate several types of in-ear devices including hearing aids, earphones, protectors, and earplugs. This canal-type home has a neighbor called the temporomandibular joint (TMJ) whose movements slightly deform shape earcanal. While these cyclic deformations influence positioning, comfort, functioning ear-fitted devices, they also provide significant amount en...

Objective: Using the safety goggles to protect and treat process of fog, powder or laser injury eyes, reduce noise thus patient's discomfort. At same time, pulse frequency vital signs patients can be detected during treatment improve treatment. Methods: The device is a for dental that monitor pulse, including mirror frame, protective lens mounted on one side frame first elastic band second loca...

Noise from working environment can generate health impact on workers. exposure which exceeds the treshold limit affect cardiovascular system, one of is increase blood pressure. This research aims to determine association between noise intensity and pressure workers at PT X Semarang, a steel conduit manufacturing company. an observasional analitic study with cross-sectional design. The responden...

The high-noise environments in and around modern military jet aircraft can impair voice communications and cause permanent damage to the hearing of pilots and maintenance crews if adequate hearing protection is not worn. With external noise levels of some aircraft approaching 150 dBA, adequate hearing protection must provide better than 50 dB of attenuation. In order to reach such a high level ...

Humans use their senses to evaluate situations in which they find themselves. From birth and beyond, optimal survival requires accurate interpretation of senses of taste, touch, smell, sight, and sound. Hearing ranks as the most important sense after sight. Critically ill adults are vulnerable when admitted to the intensive care unit (ICU) because patients are bombarded with unfamiliar sounds, ...

With the increase popularity of individual fit testing and miniaturization of electronic components, the Field-Microphone-In-Real-Ear approach (F-MIRE) is becoming more appealing and well suited for estimating hearing protection devices (HPD) attenuation both in laboratory and in "real world" occupational conditions. The approach utilizes two miniature microphones to simultaneously measure the ...