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  2. Sound attenuator - Wikipedia

    en.wikipedia.org/wiki/Sound_attenuator

    A sound attenuator, or duct silencer, sound trap, or muffler, is a noise control acoustical treatment of Heating Ventilating and Air-Conditioning (HVAC) ductwork designed to reduce transmission of noise through the ductwork, either from equipment into occupied spaces in a building, or between occupied spaces.

  3. Health effects from noise - Wikipedia

    en.wikipedia.org/wiki/Health_effects_from_noise

    In a 2000 publication, a review of studies on birthweight and noise exposure note that while some older studies suggest that when women are exposed to >65 dB aircraft noise, a small decrease in birthweight occurs, in a more recent study of 200 Taiwanese women including noise dosimetry measurements of individual noise exposure, the authors found ...

  4. Cancer prevention - Wikipedia

    en.wikipedia.org/wiki/Cancer_prevention

    Cancer prevention is the practice of taking active measures to decrease the incidence of cancer and mortality. [ 1 ] [ 2 ] The practice of prevention depends on both individual efforts to improve lifestyle and seek preventive screening , and socioeconomic or public policy related to cancer prevention. [ 3 ]

  5. Reliable Subaru and The Leukemia & Lymphoma Society ... - AOL

    www.aol.com/reliable-subaru-leukemia-lymphoma...

    Reliable Subaru partnered with The Leukemia & Lymphoma Society to support patients facing cancer at CH Chub O’Reilly Cancer Center with a donation of 80 blankets and handwritten messages of hope ...

  6. Noise control - Wikipedia

    en.wikipedia.org/wiki/Noise_control

    Highway noise is today less affected by motor type, since the effects in higher speed are aerodynamic and tire noise related. Other contributions to the reduction of noise at the source are: improved tire tread designs for trucks in the 1970s, better shielding of diesel stacks in the 1980s, and local vehicle regulation of unmuffled vehicles. [13]

  7. Soundproofing - Wikipedia

    en.wikipedia.org/wiki/Soundproofing

    A pair of headphones being tested inside an anechoic chamber for soundproofing. Soundproofing is any means of impeding sound propagation.There are several methods employed including increasing the distance between the source and receiver, decoupling, using noise barriers to reflect or absorb the energy of the sound waves, using damping structures such as sound baffles for absorption, or using ...