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  2. Threshold limit value - Wikipedia

    en.wikipedia.org/wiki/Threshold_limit_value

    Typically the statistic for deciding acceptable exposure is chosen to be the majority (90%, 95% or 99%) of all exposures to be below the selected occupational exposure limit. For retrospective exposure assessments performed in occupational environments, the "decision statistic" is typically a central tendency such as the mean or geometric mean ...

  3. Permissible exposure limit - Wikipedia

    en.wikipedia.org/wiki/Permissible_exposure_limit

    OSHA's PEL for noise exposure is 90 decibels (dBA) for an 8-hour TWA. Levels of 90-140 dBA are included in the noise dose. [4] PEL can also be expressed as 100 percent “dose” for noise exposure. When the noise exposure increases by 5 dB, the exposure time is cut in half. [5] According to OSHA, a 95dBA TWA would be a 200 percent dose. [6]

  4. Alcohol consumption recommendations - Wikipedia

    en.wikipedia.org/wiki/Alcohol_consumption...

    Their daily limits range from 10-48 g per day for both men women, and weekly limits range from 27-196 g/week for men and 27-140 g/week for women. The weekly limits are lower than the daily limits, meaning intake on a particular day may be higher than one-seventh of the weekly amount, but consumption on other days of the week should be lower.

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    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  6. Flammability limit - Wikipedia

    en.wikipedia.org/wiki/Flammability_limit

    The term is considered by many safety professionals to be the same as the lower explosive level (LEL). At a concentration in air lower than the LFL, gas mixtures are "too lean" to burn. Methane gas has an LFL of 4.4%. [1] If the atmosphere has less than 4.4% methane, an explosion cannot occur even if a source of ignition is present.

  7. Biophysical profile - Wikipedia

    en.wikipedia.org/wiki/Biophysical_profile

    Each assessment is graded either 0 or 2 points and then added up to yield a number between 0 and 10. A BPP of 8 or 10 is generally considered reassuring. A BPP normally is not performed before the second half of a pregnancy since fetal movements do not occur in the first half. [ 5 ]

  8. 11 Expert-Backed Tips For Stopping a Receding Hairline - AOL

    www.aol.com/11-expert-backed-tips-stopping...

    Right now, the most effective medication for reducing DHT levels is finasteride (also sold under the brand name Propecia). This prescription drug blocks 5-alpha reductase, reducing your DHT levels ...

  9. Maximum acceptable toxicant concentration - Wikipedia

    en.wikipedia.org/wiki/Maximum_Acceptable...

    The maximum acceptable toxicant concentration (MATC) is a value that is calculated through aquatic toxicity tests to help set water quality regulations for the protection of aquatic life. Using the results of a partial life-cycle chronic toxicity test, the MATC is reported as the geometric mean between the No Observed Effect Concentration ...

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