This question is from an industrial hygiene class. copper fume (welding) 0.1 mg/m3 (OSHA 8-hour TWA)

Calculate the minimum sampling time you will require to be able to detect concentrations at the OELs listed in the table. Show your work in calculating the sampling times.

Using some methods in NIOSH 7302

I'm looking for help in finding the minimum sampling time and what formula is used to identify it. My assignment is past due but I'm at a block where I can not find the necessary information.

Which action is characterized of mental illness 1.brushing teeth every hour because ones mouth feels dirty ? 2. forgetting to eat breakfast on a busy day? 3.crying three days over a relationship breakup? 4.feeling embarrassed about going to school after failing in front of friends?

Which is an internal barrier to seeking with mental problems? a) lack of parent permission b)complex mental health system c) difficulty paying for servicesd) cultural and religious conflicts

Most of the world's booming population growth is occurring in countries that arenot highly industrialized. the high birthrates in these countries often result inlower standards of living. which of the following would be the best solution tothis global economic problem? o a. encouraging developing countries to participate in global tradeob. creating an international seed bank to protect biodiversityoc. forming strict regulations on greenhouse gas emissionso d. establishing international agreements to prevent overfishingis it a b c d