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Continuing Education — "The Action Level!®"

VOLUME 9(8), August 2012
Journal of Occupational and Environmental Hygiene


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CASE STUDIES:

Job Strain and Shiftwork Influences on Biomarkers and Subclinical Heart Disease Indicators: A Pilot Study
Imelda S. Wong, Aleck S. Ostry, Paul A. Demers and Hugh W. Davies

1. What does parasympathetic activity in the autonomic
    nervous system represent?

a. activation of the cardiovascular system to
          prepare for threats
b. cardiovascular system rest and recovery
c. neuroendocrine dysregulation
d. stress-related circadian disruption
2. Allostasis is defined as the cumulative load on the
    cardiovascular system. True or False?
True
False
Particulate Matter (PM) Exposure Assessment – Horizontal and Vertical PM Profiles in Relation to Agricultural Activities and Environmental Factors in Farm Fields
Farhang Akbar-Khanzadeh, April Ames, Michael Bisesi, Sheryl Milz, Kevin Czajkowski and Ashok Kumar

3. The levels of respirable particulate matter (RPM) and total
    particulate matter (TPM):

a. were not significantly correlated.
b. were significantly correlated with a regression
          line of RPM = 0.92 TPM + 0.397.
c. were significantly correlated with a regression
          line of RPM = 5.92 TPM – 6.97.
d. cannot be correlated since they have different
          dimension.
4. The results showed that the concentrations of nine metals
    collected via integrated sampling were:
a. well below current recommended occupational
          exposure.
b. well above current recommended occupational
          exposure.
c. below the analytical detection limits.
d. Both a and c
e. None of the above
A Field Evaluation of the Physiological Demands of Miners in Canada's Deep Mechanized Mines
Glen P. Kenny, Matthieu Vierula, Joseph Maté, Francois Beaulieu, Stephen G. Hardcastle and Francis Reardon

5. The relative physical effort of tasks performed within each of
    the mining jobs was highly variable albeit only small differences
    in average core temperature were observed. These observations
    suggest that self-pacing may play an important role in mitigating
    the level of physiological strain in miners. True or False?

True
False
6. Younger miners may demonstrate a reduced level of heat
    strain as compared to their older counterparts. True or False?
True
False
Analysis of Forces Generated by N95 Filtering Facepiece Respirator Tethering Devices: A Pilot Study
Raymond Roberge, George Niezgoda and Stacey Benson

7. All of the following decrease the loads (tension) generated
    by the tethering devices (straps) of N95 filtering facepiece
    respirators, except:

a. Increased cross sectional area of the tethering
          device (strap)
b. Exceeding the elastic limit
c. Multiple donnings
d. Crosslink breakage
8. Which of the following statements is true?
a. The seal of an N95 filtering facepiece respirator
          is primarily impacted only by the tension
          developed by the tethering devices (straps).
b. Only elastomeric materials are used to develop
          loads in N95 filtering facepiece respirators
          tethering devices (straps).
c. When properly donned as per manufacturers'
          instructions, greater tension is developed by the
          bottom tethering device (strap) than the top
          tethering device (strap) of N95 filtering facepiece
          respirators.
d. The greatest decrement in the tension developed
          by the tethering devices (straps) of N95 filtering
          facepiece respirators occurs after the first
          donning.
Do New Wipe Materials Outperform Traditional Lead Dust-Cleaning Methods?
Roger D. Lewis, Jason Kennedy, Christopher A. Brown, Sridhar Condoor and Laxmi Thummalakunta

9. This study concludes lead removal using a wet Swiffer®
    produces poorer results than three other methods for lead
    removal on flat, grooved floor surfaces. True or False?

True
False
10. The capacity of an electrostatic cloth to remove particles can
      be completely explained using the 'trap concept,' e.g., the
      application of normal and frictional forces. True or False?
True
False
Exposure to o-Toluidine, Aniline, and Nitrobenzene in a Rubber Chemical Manufacturing Plant: A Retrospective Exposure Assessment Update
Kevin W. Hanley, Susan M. Viet, Misty J. Hein, Tania Carreón and Avima M. Ruder

11. During the period 1976–2004 additional bladder cancer cases
      occurred in a setting where air sampling data were consistently
      above occupational exposure limits. True or False?

True
False
12. Which of the following choices best corresponds to the bladder
      cancer risk associated with definite exposures to ortho-toluidine
      and aniline?
a. 1–2 times higher
b. 1–5 times higher
c. 5–10 times higher
d. > 10 times higher

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, 2012.

Answers will be available online at
http://www.acgih.org/products/joeh/alanswers.htm
on September 10, 2012.

 
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