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 ...

Recent research suggests that blood tests may show markers of oral cancer. But a blood test isn’t enough to confirm an oral cancer diagnosis. A biopsy is the only way to confirm it. Blood tests for ...

Sequential procedures based on the Mantel-Haenszel statistic (Muenz, Green and Byar, 1977, Biometrics 33, 617-626), the Wilcoxon statistic (Davis, 1978, Communications in Statistics, Series A 7, ...

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 ...

Today is National HIV testing day, so it’s only fitting that the CDC announced on Thursday that it was recommending a new HIV testing approach that can diagnose HIV three to four weeks earlier than ...

This is a preview. Log in through your library . Publisher Information The Association of Official Seed Analysts (AOSA) is an organization of member laboratories. Members include official state, ...