The Action Level!® Quiz - Volume 14 No 11 - November 2017

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Performance Evaluation of Mobile Downflow Booths for Reducing Airborne Particles in the Workplace

Li-Ming Lo, Braden Hocker, Austin E. Steltz, John Kremer and H. Amy Feng

1. A downflow booth is operated at slightly lower pressure than its surroundings. True or False?

2. What is a safe working zone (limit) of the downflow booth if it is measured from the rear exhausts and expressed by percentage of the depth of the booth?

Trends of ATV Use and Associated Injury on Saskatchewan Farms

Lynne Clay, Stephan Milosavljevic, Niels Koehncke, James Dosman and Catherine Trask

3. What percentage of Saskatchewan farmers used an ATV more than 100 days per year?

4. Results suggest there is no relationship between neck/back pain and ATV use in farmers. True or False?

Exposure to Benzene in a Pooled Analysis of Petroleum Industry Case-Control Studies

D.C. Glass, A.R. Schnatter, G. Tang, T.W. Armstrong and L. Rushton

5. Participants from the Canadian study had the highest mean cumulative exposure only because they had the highest mean intensity. True or False?

6. In this study, pooling data was more advantageous than a meta-analysis because:

Profiles of Law Enforcement Agency Body Armor Policies – A Latent Class Analysis of the LEMAS 2013 Data

Weiwei Liu and Bruce Taylor

7. The study found four clusters of law enforcement agencies (LEA) in terms of their body armor policies. It was found that agency type is significantly related to the likelihood of an LEA belonging to one of the clusters. Compared to local agencies, Sherriff's departments are less likely to be in:

8. Over half of the law enforcement agencies in the U.S. required their officers to be trained for the proper wear, care and maintenance of the armor in 2013. True or False?

Air, Hand Wipe, and Surface Wipe Sampling for Bisphenol A (BPA) among Workers in Industries That Manufacture and Use BPA in the United States

Cynthia J. Hines, Matthew V. Jackson, Annette L. Christianson, John C. Clark, James E. Arnold, Jack R. Pretty and James A. Deddens

9. In this study, those in the job of working with molten BPA-filled wax had the highest air and post-shift hand wipe BPA levels. True or False?

10. Which of the following factors in the stepwise regression model was not a significant determinant of increased BPA air concentrations?

Improved Hearing Protector Attenuation through the Use of a Lubricant

Timothy J. Ryan, Rebecca S. Meier and Ashley Tatarka

11. Results generally suggest that lubricated right ear plugs were more readily fitted properly by inexperienced users. True or False?

12. Most earplugs will perform better with the use of lubricant, at least for the short-term. True or False?

Transfer of Bacteriophage MS2 and Fluorescein from N95 Filtering Facepiece Respirators to Hands: Measuring Fomite Potential

Tyler M. Brady, Amanda L. Strauch, Claudia M. Almaguer, George Niezgoda, Ronald E. Shaffer, Patrick L. Yorio and Edward M. Fisher

13. Viruses can be transferred from a contaminated filtering facepiece respirator to wearer’s hands when doffing. True or False?

14. In healthcare settings, the Centers for Disease Control and Prevention recommend doffing filtering facepiece respirators by:

Models for Nearly Every Occasion: Part III – One Box Decreasing Emission Models

Paul Hewett and Gary H. Ganser

15. Which of the following is not required when using a “decreasing emission” steady state equation to predict the average concentration for a task?

16. The model calibration procedure only calibrates the steady state models. True or False?

Models for Nearly Every Occasion: Part IV – Two Box Decreasing Emission Models

Gary H. Ganser and Paul Hewett

17. A portable laboratory hood, with filtered recirculation, has been purchased for tasks involving solvents and glues. Which transient model should be applied to this scenario?

18. The time T required to achieve ZnZ conditions decreases whenever the emission rate constant increases. True or False?

Deadline for answers is November 30, 2017.

Answers will be available online on January 3, 2018.