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Continuing Education — "The Action Level!®"

VOLUME 2(11), November 2005
Journal of Occupational and Environmental Hygiene

Answer the questions below and click "Submit".

Full Name:
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CASE STUDIES:

Occupational Exposure Limits: An Approach and Calculation Aid for Extended Work Schedule Adjustments
Thomas W. Armstrong, Daniel J. Caldwell, Dave K. Verma

1. The extended shift adjustment factor applied to an occupational
    exposure limit will always be less than or equal to one.
    True or False?

True
False
2. Biological half life values based on human data are published and
    readily available for all compounds with established TLVs®.
    True or False?
True
False
Change in Tensile Properties of Neoprene and Nitrile Gloves after Repeated Exposures to Acetone and Thermal Decontaminations
Pengfei Gao and Beth Tomasovic

3. The results of this study show that the biggest single cycle loss
    for the ultimate elongation was observed during:

a. The third exposure/decontamination cycle for
          neoprene glove material only
b. The second exposure/decontamination cycle for
          nitrile glove material only
c. The first exposure/decontamination cycle for both
          the glove materials investigated
d. None of the above
4. This study finds that the effectiveness of the decontamination
    process should be based on:
a. Permeation parameters alone
b. The change in physical properties such as tensile
          strength
c. Whether the material is wrinkled
d. Permeation parameters and the change in
          physical properties
Indoor Air Quality in Two Urban Elementary Schools — Measurements of Airborne Fungi, Carpet Allergens, CO2, Temperature, and Relative Humidity
Gurumurthy Ramachandran, John L. Adgate, Sudipto Banerjee, Timothy R. Church, David Jones, Ann Fredrickson, and Ken Sexton

5. Since there are no numerical criteria for culturable airborne fungal
    concentrations proposed by ACGIH®, which of the following factors
    must be considered in the interpretation of fungal levels:

a. Comparisons with outdoor levels
b. The particular species present in the samples
c. Whether the sampling was conducted to assess
          background, baseline, average of worst-case
          scenarios
d. All of the above
Respiratory Protection Provided by N95 Filtering Facepiece Respirators Against Airborne Dust and Microorganisms in Agricultural Farms
Tiina Reponen, Shu-An Lee, Atin Adhikari, Rakesh Shukla, Hyoyue Li Siegler

6. The WPFs for dust particles in the size range of 0.7 to 10 µm
    increased with increasing particle size. True or False?

True
False
7. WPF values for airborne microorganisms obtained in this study
    support the use of APF10 for N95 filtering facepiece respirators
    against airborne microorganisms. True or False?
True
False
Benzene Exposures Associated With Tasks Performed on Marine Vessels (Circa 1975 to 2000)
Pamela R.D. Williams, Kathryn Robinson, and Dennis J. Paustenbach

8. The majority of available benzene air sampling data associated with
    the marine transport of gasoline are based on studies conducted in
    the United States. True or False?

True
False
Head-and-Face Anthropometric Survey of U.S. Respirator Users
Ziqing Zhuang and Bruce Bradtmiller

9. A new head and face anthropometric survey was needed because:

a. the nation's workforce is changing.
b. civilian respirator sizing was based on military,
          not civilian, data.
c. respirator sizing was based on data more than
          30 years old.
d. All of the above
10. Three age strata were used in the survey sampling plan.
      True or False?
True
False


Deadline for answers is November 30, 2005.

Answers will be available online at
http://www.acgih.org/products/joeh/alanswers.htm
on December 12, 2005.

 
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