Air monitoring of aromatic hydrocarbons during automobile spray painting for developing change schedule of respirator cartridges.

In the absence of End of Service Life Indicator (ESLI), a cartridge change schedule should be established for ensuring that cartridges are changed before their end of service life. Factors effecting service life of cartridges were evaluated, including the amount of atmospheric contamination with aromatic hydrocarbon vapors in the workplace, temperature, and relative humidity of the air. A new change schedule was established based on comparing the results of air monitoring and workplace conditions, laboratory experiment, and the NIOSH MultiVapor software.

Preparation of a new adsorbent from activated carbon and carbon nanofiber (AC/CNF) for manufacturing organic-vacbpour respirator cartridge.

In this study a composite of activated carbon and carbon nanofiber (AC/CNF) was prepared to improve the performance of activated carbon (AC) for adsorption of volatile organic compounds (VOCs) and its utilization for respirator cartridges. Activated carbon was impregnated with a nickel nitrate catalyst precursor and carbon nanofibers (CNF) were deposited directly on the AC surface using catalytic chemical vapor deposition. Deposited CNFs on catalyst particles in AC micropores, were activated by CO2 to recover the surface area and micropores.

Two different doses of amitriptyline ER in the prophylaxis of migraine: long-term results and predictive factors.

Background And Purpose: The rationale for our study was to examine the prophylactic benefit of two doses of amitriptyline over a 6-month observational period in patients with migraine. We aimed at evaluating whether 50 mg of amitryptiline extended release was more effective than 25 mg in reducing the number of migraine days.

Methods: Primary outcome measure was the reduction of migraine days in time course (i.

Cognitive failures, driving errors and driving accidents.

Introduction: The impact of a driver's cognitive capability on traffic safety has not been adequately studied. This study examined the relationship between cognitive failures, driving errors and accident data.

Method: Professional drivers from Iran (160 males, ages 18-65) participated in this study.