the kind caused by car exhaust — may be a significant cause of rising rates of autism in children. Exposure to nitric oxide (NO)— which is produced when fuel is burned — while a mother is ...

LOS ANGELES — Are you a junkie in Skid Row who just got a bag of crack or fentanyl, but have no pipe to smoke it in? Don’t worry: local nonprofit organizations will hand you a brand-new crack ...

An important factor in flowmeter measurement is pipe diameter. Most flowmeters compute flowrate by multiplying the cross-sectional area of a pipe by its velocity. Cross-sectional area A is determined ...