WHEN OSHA's revised Respiratory Protection Standard for General Industry, 29 CFR 1910.134, became effective on April 8, 1998, it provided employers with an all-inclusive reference source for fit ...

The FDA expanded the marketing indications of a line of diagnostic tests to include checks for Lyme disease—the first cleared by the agency to use a new parallel testing method. Developed by Zeus ...

A total knee replacement (TKR) may sound like a pretty drastic operation, but in fact it is an increasingly routine process providing relief from pain, improved leg function and improved quality of ...

Quantitative fit testing is the preferred testing method. The ambient aerosol condensation nuclei counting (CNC) method, using a Portacount® Plus instrument, has been selected as the quantitative fit ...

According to a report by the World Health Organization released a few years ago, one of the leading injury-related causes of death among people aged 15 to 44 years is, believe it or not, traffic ...

This article is concerned with testing for noninvertible time series models. For a stationary but noninvertible autoregressive moving average model, I construct a derived process that is nonstationary ...

Christina Majaski writes and edits finance, credit cards, and travel content. She has 14+ years of experience with print and digital publications. Khadija Khartit is a strategy, investment, and ...