Comparison of Plasma and Brain Exposure Levels of Bis‐pyridinium Oximes KR‐22839 and KR‐26256 with Asoxime and Obidoxime in Mice

2018 ◽  
Author(s):  
Hyun Myung Lee ◽  
Sunjoo Ahn ◽  
Ha‐Yeon Lee ◽  
Jae Min Im ◽  
Sung Hee Cho ◽  
...  
Keyword(s):  
Pyridinium Oximes ◽  
Brain Exposure ◽  
Exposure Levels

83. The Characteristic Changes in Exposure Levels in Chloroprene Monomer and Polymer Production

2005 ◽  
Author(s):  
N. Esmen ◽  
T. Hall ◽  
M. Phillips ◽  
P. Jones ◽  
H. Basara ◽  
...  
Keyword(s):  
Exposure Levels

270. Exposure Levels and Determinants of Flour Dust Exposure in Bakeries

1999 ◽  
Author(s):  
I. Burstyn ◽  
K. Teschke ◽  
K. Bartlett ◽  
S. Kennedy
Keyword(s):  
Dust Exposure ◽  
Exposure Levels ◽  
Flour Dust

Risk and Regulation: Methylmercury Exposure and Fish Consumption

2010 ◽  
Vol 6 ◽  
Author(s):  
Jonathan M Gendzier
Keyword(s):  
Environmental Protection Agency ◽  
Fish Consumption ◽  
Government Regulation ◽  
Mercury Emissions ◽  
Methylmercury Exposure ◽  
Exposure Levels ◽  
Aquatic Food ◽  
Reference Doses ◽  
Fish And Shellfish ◽  
Global Cycle

Exposure to organic mercury (methylmercury) occurs almost universally due to ingestion via contaminated fish and shellfish tissue. Ultimate sources of mercury consist of air release by domestic industrial combustion, mining, and international mercury emissions transported via a global cycle. Deposition of mercury from air to surface waters results in methylation to organic methylmercury and bioaccumulation in the aquatic food web. Health effects from methylmercury exposure consist mainly of neurological and neurodevelopmental effects, with fetuses particularly sensitive. Thus regulation of methylmercury exposure has concentrated on acceptable exposure levels and reference doses aimed toward protecting developing fetuses. The risk of methylmercury exposure in humans is regulated largely by the federal government, especially by the Environmental Protection Agency (EPA) and the Food and Drug Administration (FDA). The EPA imposes limits on mercury emissions and seeks to research methylmercury levels in fish and humans. The EPA sets a reference dose for methylmercury exposure. The FDA conducts uses date on methylmercury levels in fish to advise consumers on how to make informed decisions regarding fish consumption. There are numerous shortcoming to government regulation of this issue. Further scientific research, improved implementation of available data and scientific conclusions, and improved public communication of risk would all lead to more effective treatment of the risk of methylmercury exposure via ingestion of fish and shellfish. This could include more effective monitoring systems of human and fish methylmercury levels, research into the process of bioaccumulation, and implementation of stricter fish labeling standards, as well as research into higher-risk subpopulations allowing for targeted standards and recommendations.

Evaluating noise exposure levels of laboratories in civil engineering education

2019 ◽  
Vol 67 (2) ◽  
pp. 69-79 ◽  
Author(s):  
Ã-. AkboÄŸa Kale ◽  
Ä°. Bayram ◽  
S. Baradan
Keyword(s):  
Engineering Education ◽  
Noise Exposure ◽  
Civil Engineering ◽  
Exposure Levels

Determination of Lead Content in Red Colored Lipsticks from Mandalay Market by Flame Atomic Absorption Spectrophotometer

2018 ◽  
Vol 30 (3) ◽  
pp. 167-173
Keyword(s):  
Sampling Procedure ◽  
The Body ◽  
Lead Content ◽  
Social Psychological ◽  
Allowable Limit ◽  
Flame Atomic Absorption ◽  
Therapeutic Benefits ◽  
Flame Atomic Absorption Spectrophotometer ◽  
Exposure Levels

Red colored lipstick is the most widely used cosmetic product. Although lipstick gives a lot of social, psychological and therapeutic benefits, it may harm the consumers. Because some lipsticks contain a considerable amount of heavy metal especially lead. Lead is being used in lipstick mainly for the pigments required to obtain needed colors. Lead accumulates in the body over time and lead-containing lipstick applied several times a day, every day, combined with lead in water and other sources, could add up to significant exposure levels. Therefore, this study was aimed to determine lead content in red colored lipsticks from market. This study was laboratorybased, analytical study by using 25 lipstick samples. Red colored lipsticks were bought from Mandalay Market by random sampling procedure and they were completely coded to avoid the bias. Then, lead content in coded samples was determined by Flame AAS according to International Conference on Harmonization (ICH) guideline. Lead contents of 88% of the lipsticks samples were more than specified limit (20 ppm) of Food and Drug Administration, United States. All of them, lead content was highest in counterfeit lipsticks group. Among the tested lipstick samples, lipstick with lowest lead content was LE-RL 01 (15.74 ppm) and the lipstick with highest lead content was CF-RL 01(60.09 ppm). In conclusion, lead contents of red colored lipsticks (22 out of 25) from market samples were higher than allowable limit (20 ppm).

Evaluation of Radiation Exposure Levels in Cine Cardiac Catheterization Laboratories

10.37206/11 ◽  
1984 ◽  
Author(s):  
Stephen Balter ◽  
Cari Borras ◽  
Pei-Jan Paul Lin ◽  
Robert J. Moore ◽  
William E. Moore ◽  
...  
Keyword(s):  
Radiation Exposure ◽  
Cardiac Catheterization ◽  
Exposure Levels
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