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  2. NIOSH air filtration rating - Wikipedia

    en.wikipedia.org/wiki/NIOSH_air_filtration_rating

    During the COVID-19 pandemic, the mask and respirator market rapidly grew, along with counterfeit respirators. [1] NIOSH, on behalf of the Department of Health and Human Services, filed a trademark application on June 17, 2020, for various 42 CFR 84 trademarks, including the N95, allowing NIOSH to enforce rules on counterfeit masks outside of rules defined in 42 CFR 84.

  3. Project portfolio management - Wikipedia

    en.wikipedia.org/wiki/Project_portfolio_management

    The PPM landscape is evolving rapidly as a result of the growing preference for managing multiple capital investment initiatives from a single, enterprise-wide system. This more centralized approach, and resulting ' single version of the truth ' for project and project portfolio information, provides the transparency of performance needed by ...

  4. Clinical Laboratory Improvement Amendments - Wikipedia

    en.wikipedia.org/wiki/Clinical_Laboratory...

    In accord with the CLIA, the CLIA Program sets standards and issues certificates for clinical laboratory testing. [2] CLIA defines a clinical laboratory as any facility which performs laboratory testing on specimens derived from humans for the purpose of providing information for: [citation needed]

  5. National Ambient Air Quality Standards - Wikipedia

    en.wikipedia.org/wiki/National_Ambient_Air...

    9 ppm (10 mg/m 3) 8-hour Not to be exceeded more than once per year 40 CFR 50.8: Ozone (O 3) Primary and Secondary 0.12 ppm (235 μg/m 3) 1-hour a: expected number of days per calendar year, with maximum hourly average concentration greater than 0.12 ppm, is equal to or less than 1 40 CFR 50.9: Primary and Secondary 0.070 ppm (140 μg/m 3) 8-hour

  6. Air pollutant concentrations - Wikipedia

    en.wikipedia.org/wiki/Air_pollutant_concentrations

    Regulations that define and limit the concentration of pollutants in the ambient air or in gaseous emissions to the ambient air are issued by various national and state (or provincial) environmental protection and occupational health and safety agencies. Such regulations involve a number of different expressions of concentration.

  7. The best gifts to buy your grandkids — from babies to big ...

    www.aol.com/lifestyle/the-best-gifts-to-buy-your...

    With five multicolor play shapes, this foam fort building set will give kiddos plenty of ways to play. From a cozy couch to a castle and moat, their imagination is the limit.

  8. 7 tips to avoid holiday scams and protect your identity

    www.aol.com/7-tips-avoid-holiday-scams-170000991...

    The holidays can bring joy, time off from work, and days spent with family—but they can also be accompanied by added stressors. Whether stretching finances to afford presents, struggling with ...

  9. Permissible exposure limit - Wikipedia

    en.wikipedia.org/wiki/Permissible_exposure_limit

    Most of OSHA's PELs were issued shortly after adoption of the Occupational Safety and Health (OSH) Act in 1970. [1] Chemical regulation is sometimes [clarification needed] expressed in parts per million (ppm), but often [clarification needed] in milligrams per cubic meter (mg/m 3). [2] Units of measure for physical agents such as noise are ...