Air-purifying respirators are many types of negative-pressure respirators which include chemical media and mechanical filters. Positive pressure respirators include powered air-purifying respirators (PAPRs). Air-Purifying escape respirators (APER) are used by the general public for radiological, biological, chemical and nuclear (CBRN) terrorism incidents.
Sudden sensorineural hearing loss (SSHL), commonly known as sudden deafness, occurs as an unexplained, rapid loss of hearing—usually in one ear—either at once or over several days. It should be considered a medical emergency. Anyone who experiences SSHL should visit a doctor immediately.
The pain threshold for humans is 120-130 Decibels. Any sound above 85 dB can cause hearing loss, and the loss is related both to the power of the sound as well as the length of exposure. Here are 10 sounds produced throughout history and how incredibly loud they are. Just remember, human speech is only registered at about 25-35 decibels.
Updated clinical guidelines published the journal Otolaryngology-Head and Neck Surgery say cotton swabs are not appropriate for earwax removal. In fact, information for patients in the guidelines say not to put anything "smaller than your elbow in your ear."
The world is getting louder. Scientists define "noise" as unwanted sound, and the level of background din from human activities has been doubling roughly every three decades, beating population growth. Road traffic in the United States has tripled over the last 30 years. By 2032, the number of passenger flights is expected to be nearly double the 2011 figure—at peak hours, planes are even audible overhead 70 percent of the time in the remote backcountry of Yosemite National Park.
Research published in the Lancet journal found that dementia, a chronic disorder of mental processes, was more common in people who lived within 50 meters of a major road than those who lived further away.
The researchers tracked approximately 6.6 million adults aged between 20 and 85 in Ontario, Canada, for over a decade (2001 to 2012).
What do hypertension, sleep disorders, cardiovascular disease, impaired cognition and being annoyed have in common?
All are possible outcomes of too much noise around us.
Hearing loss and ailments such as the ringing ears of tinnitus aren’t the only things we should worry about. Evidence of the non-auditory effects of noise on health is growing.
United Airlines baggage handlers will get some protection from ergonomic hazards in the workplace, under what the U.S. Department is calling “a precedent-setting agreement” with the airline. The agreement settles a lawsuit filed by the department on behalf of OSHA to eliminate several hazardous conditions its inspectors identified in United's baggage-handling operation at Newark Liberty International Airport, where United baggage handlers reported at least 622 musculoskeletal injuries from 2011 to January 2015.
You may have seen water bottles labeled “BPA Free” or heard that certain foods contain BPA. BPA (or bisphenol A) has been in the news over the past several years. BPA is weakly estrogenic; that is, BPA may mimic some of the hormone-like effects of estrogen. BPA is used primarily in making polycarbonate plastic and some epoxy resins. The general population is exposed to BPA mainly through diet.
The United Steelworkers (USW) are praising OSHA for its release last week of the final rule for occupational exposure to beryllium and beryllium compounds in general industry, construction and maritime.
“This has been a long time in the making,” said USW International President Leo W. Gerard.
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