Distribution of Daily Breathing Rates For Use in California's Air Toxics Hot Spots Program Risk Assessments

2002 ◽  
Vol 8 (7) ◽  
pp. 1723-1737 ◽  
Author(s):  
Melanie A. Marty ◽  
Robert J. Blaisdell ◽  
Rachel Broadwin ◽  
Martin Hill ◽  
Dorothy Shimer ◽  
...  
Keyword(s):  
Hot Spots ◽  
Risk Assessments ◽  
Air Toxics

scholarly journals Spatial Regulation of Air Toxics Hot Spots

2015 ◽  
Vol 34 (2) ◽  
pp. 298-327 ◽  
Author(s):  
Rama Mohana R. Turaga ◽  
Douglas Noonan ◽  
Ann Bostrom
Keyword(s):  
Hot Spots ◽  
Air Toxics ◽  
Spatial Regulation

A high-performance oil-free backing pump for electron microscopes

1978 ◽  
Vol 36 (1) ◽  
pp. 110-111
Author(s):  
G.K.W. Balkau ◽  
E. Bez ◽  
J.L. Farrant
Keyword(s):  
Molecular Weight ◽  
Electron Microscope ◽  
Hot Spots ◽  
High Performance ◽  
Carbonaceous Material ◽  
Contamination Rate ◽  
Low Molecular Weight ◽  
Principal Source ◽  
Rotary Pumps ◽  
Electron Microscopes

The earliest account of the contamination of electron microscope specimens by the deposition of carbonaceous material during electron irradiation was published in 1947 by Watson who was then working in Canada. It was soon established that this carbonaceous material is formed from organic vapours, and it is now recognized that the principal source is the oil-sealed rotary pumps which provide the backing vacuum. It has been shown that the organic vapours consist of low molecular weight fragments of oil molecules which have been degraded at hot spots produced by friction between the vanes and the surfaces on which they slide. As satisfactory oil-free pumps are unavailable, it is standard electron microscope practice to reduce the partial pressure of organic vapours in the microscope in the vicinity of the specimen by using liquid-nitrogen cooled anti-contamination devices. Traps of this type are sufficient to reduce the contamination rate to about 0.1 Å per min, which is tolerable for many investigations.

Column: Risk Assessments

Polymer News ◽  
2004 ◽  
Vol 29 (7) ◽  
pp. 220-223
Author(s):  
Charles Carraher, Jr.
Keyword(s):  
Risk Assessments

Column: Risk Assessments

Polymer News ◽  
2004 ◽  
Vol 29 (2) ◽  
pp. 58-60
Author(s):  
Charles Carraher, Jr.
Keyword(s):  
Risk Assessments

Effects of Differences in Numeric Ability on the Perception of Adversity Risk to Others and Self

2013 ◽  
Vol 25 (2) ◽  
pp. 95-104 ◽  
Author(s):  
Coy Callison ◽  
Rhonda Gibson ◽  
Dolf Zillmann
Keyword(s):  
Risk Assessments ◽  
High Ability ◽  
News Report ◽  
Bodily Injury ◽  
Adolescent Groups ◽  
Study Participants

This study used an experimental news report about confrontational robberies by adolescent groups in Mexican resorts that presented statistics with or without personalized cases of victimization. Study participants estimated the risk of harm to victims and the extent of their suffering. They also indicated their own risk and concern for their own safety. The readers’ numeric ability was ascertained thereafter. A trisection of this ability showed that persons of high ability comparatively overestimated others’ risk but underestimated their own; this despite indicating greater concerns for their own safety. These results were not altered by consideration of the readers’ empathic, experiential, and rational traits. The incorporation of personalized cases of victimization in the news report did not appreciably influence risk assessments. The involvement of cases resulting in major bodily injury, however, increased estimates of the incidence of such robberies.

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