منابع مشابه
Effects of noise on hearing.
FEW WOULD DENY THAT WE LIVE IN A NOISY WORLD. NOISE, whether a result of air traffic, crowded urban streets, personal stereos, or high-powered machinery, rifles, and shotguns, is one of America’s most widespread nuisances. Excessive noise disrupts sleep, produces stress, impairs communication, and, in high enough doses, causes significant noise-induced hearing loss (NIHL). Although roughly 25% ...
متن کاملAuditory risk of air rifles.
OBJECTIVE To characterize the impulse noise exposure and auditory risk for air rifle users for both youth and adults. DESIGN Acoustic characteristics were examined and the auditory risk estimates were evaluated using contemporary damage-risk criteria for unprotected adult listeners and the 120-dB peak limit and LAeq75 exposure limit suggested by the World Health Organization (1999) for childr...
متن کاملHigh-powered Gravitational News
We describe the computation of the Bondi news for gravitational radiation. We have implemented a computer code for this problem. We discuss the theory behind it as well as the results of validation tests. Our approach uses the compactified null cone formalism, with the computational domain extending to future null infinity and with a worldtube as inner boundary. We calculate the appropriate ful...
متن کاملHearing Hazard from Small-bore Rifles
Ever mindful of its duty to affiliated clubs and members, the National Small-bore Rifle Association organised a large-scale research project into this question by the Audiology Group of the Institute of Sound and Hearing at the University of Southampton. With the aid of a grant by the Medical Research Council and provision of ammunition and targets by the National Small-bore Rifle Association, ...
متن کاملManual versus powered toothbrushing for oral health.
BACKGROUND Specific oral bacteria, generically known as "dental plaque" are the primary cause of gingivitis (gum disease) and caries. The removal of dental plaque is thought to play a key role in the maintenance of oral health. There is conflicting evidence for the relative merits of manual and powered toothbrushing in achieving this. OBJECTIVES To compare manual and powered toothbrushes in r...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Current Therapeutic Research
سال: 2003
ISSN: 0011-393X
DOI: 10.1016/j.curtheres.2003.08.003