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Continuing Education — "The Action Level!®"

VOLUME 10(8), August 2013
Journal of Occupational and Environmental Hygiene


Provide FULL NAME and EMAIL information below, then answer the questions and click "Submit".

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CASE STUDIES:

Flat Fold and Cup-Shaped N95 Filtering Facepiece Respirator Face Seal Area and Pressure Determinations: A Stereophotogrammetry Study
George Niezgoda, Jung-Hyun Kim, Raymond J. Roberge and Stacey M. Benson

1. Significant differences in face seal pressures developed by
    the tethering devices (straps) of different models of N95 filtering
    facepiece respirators always correlate with significant differences
    in face seal area dimensions. True or False?

True
False
2. Face seal pressures of N95 filtering facepiece respirators
    have a significant direct relationship with fit factors. True
    or False?
True
False
Comparative Evaluation of Three Impactor Samplers for Measuring Airborne Bacteria and Fungi Concentrations
Delphine Méheust, Jean-Pierre Gangneux and Pierre Le Cann

3. What were the airflows of Sampl'Air and Air Ideal impactors?

a. 3 L/min
b. 100 L/min
c. 300 L/min
4. The three samplers were used simultaneously in the hospital
    environments. True or False?
True
False
Quantitative Evaluation of the Performance of an Industrial Benchtop Enclosing Hood
Xinjian He and Steven E. Guffey

5. The performance of a benchtop enclosing hood is significantly
    (* p * < 0.05) affected by:

a. Hood face velocity
b. Wind tunnel cross-draft velocity
c. Interventions (added on to the hood)
d. All of the above
6. Freon-134a concentrations measured at the manikin's
    breathing zone decreased with increasing hood face velocity.
    True or False?
True
False
Shoulder Joint Loading and Posture During Medicine Cart Pushing Task
Xu Xu, Jia-Hua Lin and Jon Boyer

7. Which of the following factors will change shoulder joint
    moment during the initial phase of medicine cart pushing task?

a. handedness
b. cart load stability
c. surface friction
d. all of the above
8. Which of the following factors will change shoulder elevation
    angle during the turning phase of medicine cart pushing task?
a. congestion level
b. cart load stability
c. shoulder tendency
d. all of the above
Impact of Oxidation Process on Polycyclic Aromatic Hydrocarbon (PAH) Content in Bitumen
Christophe Bolliet, Catherine Juery and Benoit Thiebaut

9. What is the maximum content of PAH measured in oxidized
    bitumen in this study?

a. 120 mg/kg
b. 1200 mg/kg
c. 120 000 mg/kg
10. Fluxoil used in the feed of blown bitumen unit tends to
      increase PAH content in product. True or False?
True
False
Consideration of Kaolinite Interference Correction for Quartz Measurements in Coal Mine Dust
Taekhee Lee, William P. Chisholm, Michael Kashon, Rosa J. Key-Schwartz and Martin Harper

11. The quartz result can be brought closer to the true exposure
      using a kaolinite correction involving a reference material.
      True or False?

True
False
12. The methods from NIOSH 7603 (peak height) and MSHA P-7
      (peak area) showed significant differences in deviations from
      kaolinite corrected spiked samples. True or False?
True
False

Be sure FULL NAME and EMAIL information are provided at the top of this page before submitting your answers.


Deadline for answers is August 31, 2013.

Answers will be available online at
http://www.acgih.org/products/joeh/alanswers.htm
on September 16, 2013.

 
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