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Continuing Education — "The Action Level!®"

VOLUME 6(2), February 2009
Journal of Occupational and Environmental Hygiene

Answer the questions below and click "Submit".

Full Name:
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CASE STUDIES:

Variability in Risk Factors for Knee Injury in Construction
SangWoo Tak, Victor Paquet, Susan Woskie, Bryan Buchholz and Laura Punnett

1. The ergonomic job analysis tool employed in this study
    is ________.

a. OWAS
b. PATH
c. RULA
2. Which of the following accounts for the greatest variability
    in exposure to non-neutral leg posture in the highway
    tunnel construction?
a. Between-trade
b. Between-worker
c. Between-task
d. Day-to-day
Measurement of Airborne Bacteria and Endotoxin Generated During Dental Cleaning
Steve Dutil, Anne Mériaux, Marie-Chantale de Latrémoille, Louis Lazure, Jean Barbeau and Caroline Duchaine

3. Which of the following is considered the most likely
    source(s) of bacterial aerosols generated during dental
    cleaning?

a. dental unit water and patient's mouth
          ventilation system
b. dental instruments
c. dentist and technician clothes
4. This article indicates that daily flushing (2-minutes) is
    considered to be the most efficient means of preventing dental
    unit waterline contamination. True or False?
True
False
Wood Dust Particle and Mass Concentrations and Filtration Efficiency in Sanding of Wood Materials
Irma Welling, Matti Lehtimaki, Sari Rautio, Tero Lähde, Seppo Enbom, Pasi Hynynen and Kaarle Hämeri

5. Dust emissions (mg s-1) associated with sanding (at
    P100 grade paper) were noted to be greatest for which of the
    following substrates?

a. birch plywood
b. MDF sheet
c. pine
6. Ultrafine particles are defined as particles in a size class
    less than:
a. 1 µm
b. 100 nm
c. 10 nm
Airborne Monitoring to Distinguish Engineered Nanomaterials from Incidental Particles for Environmental Health and Safety
Thomas M. Peters, Sherrie Elzey, Ronald Johnson, Heaweon Park, Vicki H. Grassian, Tabitha Maher and Patrick O'Shaughnessy

7. Microscopic analysis should be considered essential
    to _____________________.

a. developing strategies to reduce inhalation
          exposures.
b. outlining detailed compositional and
          structural information.
c. a purpose different than either choice a or b
8. Activity-based monitoring provides information regarding
    how particles enter and move throughout the workplace.
    True or False?
True
False
A 24-Hour Study to Investigate Persistent Chemical Exposures Associated with Clandestine Methamphetamine Laboratories
John Martyny, Mike VanDyke, Nicola Erb and Shawn Arbuckle

9. Which of the following would be most easily detected
    24-hours post methamphetamine cook?

a. Iodine
b. Hydrogen chloride
c. Methamphetamine
d. Nothing can be detected.
10. Exposure to methamphetamine in a structure that, within
      the last 24 hours, has been utilized as a clandestine
      methamphetamine lab primarily results from:
a. methamphetamine aerosol re-suspended
          from carpeting.
b. methamphetamine on skin or clothing
          that is absorbed through the skin.
c. methamphetamine ingestion from food.
d. a and b
e. none of the above
Task-Based Lead Exposures and Worksite Characteristics of Bridge Surface Preparation
M. Abbas Virji, Susan R. Woskie and Lewis D. Pepper

11. Use of a respirator is indicated for full-shift operations
      conducted outside the containment structure. True or False?

True
False
12. The relationship between the IOM (inhalable) sampler
      and the closed-face cassette (total) sampler suggests
      that:
a. the total sampler underestimates the
          inhalable sampler.
b. the total sampler overestimates the
          inhalable sampler.
c. the total sampler and the inhalable sampler
          are the same.
Skin and Surface Lead Contamination, Hygiene Programs and Work Practices of Bridge Surface Preparation and Painting Contractors
M. Abbas Virji, Susan R. Woskie, Lewis D. Pepper

13. Wipe samples corresponding to beginning-of- and
      end-of-shift conditions suggest which of the following findings?

a. Respirators were not properly maintained
          during use.
b. Respirators were not adequately cleaned
          at the end of the shift.
c. Respirators were not stored properly.
d. All of the above
14. In this study, which factors suggested the potential for
      take-home lead exposures?
a. Automobile contamination levels
b. Skin wipe levels at the end of the shift
c. Contamination levels in the clean side of
          the decontamination unit
d. All of the above


Deadline for answers is February 28, 2009.

Answers will be available online at
http://www.acgih.org/products/joeh/alanswers.htm
on March 11, 2009.

 
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