scholarly journals The Theory-Based Influence of Map Features on Risk Beliefs: Self-Reports of What Is Seen and Understood for Maps Depicting an Environmental Health Hazard

2012 ◽  
Vol 17 (7) ◽  
pp. 836-856 ◽  
Author(s):  
Dolores J. Severtson ◽  
Christine Vatovec
1971 ◽  
Vol 44 (2) ◽  
pp. 512-533 ◽  
Author(s):  
W. E. McCormick

Abstract To present a review of the health problems and their control for the Rubber Industry requires the making of certain choices relative to the breadth of the discussion. It is well known that the Rubber Industry has many facets. These involve not only the conversion of the natural and synthetic polymers into usable articles, but the manufacture of chemicals, plastics, and numerous other materials. For this reason, this review is restricted to the manufacture of the commonly used synthetic polymers and to the operations incident to the conversion of these polymers and the natural polymer into marketable products. Why should there be a concern with respect to the health problems of the Rubber Industry? (1) It is well known that many different chemicals are used, not only in the manufacture of polymers but in the conversion process. The industry is a huge consumer of chemicals, and these run the gamut of highly hazardous to inocuous. Proper environmental controls must be applied in order to handle them safely. (2) An increased emphasis by governmental agencies for a safe working environment has also been an important factor. (3) And, finally, our society as a whole shows an increasing concern with respect to all environmental factors affecting life and property. Industrial hygienists use a basic guiding principle for all environmental health hazard control: all materials are toxic to some degree, including such common essentials as water and oxygen. The problem is to determine the level or quantity at which a specific material is harmful or produces an adverse effect. The question is always, therefore, not whether a material is toxic; rather, is it hazardous (too much). It would be impossible for most industrial operations to occur if we had to have zero exposure of personnel to materials. The definition of the hazardous amount is frequently very difficult and time consuming, and involves skills of several disciplines, including those of toxicology and medicine. It requires the study of animals under controlled insult conditions and the ongoing observations of humans during their working lifetime.


2003 ◽  
Vol 25 (1) ◽  
pp. 6-9 ◽  
Author(s):  
Joan Flocks ◽  
Paul Monaghan

Environmental injustice occurs when a particular population, most often low-income people of color, is exposed disproportionately to an environmental health hazard. On the continuum of an environmentally unjust situation, there are several stages and levels at which inequities occur. A corporation makes a decision to locate a waste incinerator in a neighborhood that, because of historical socioeconomic discrimination, has become a low-income African American community in an industrial zone. Community members are stonewalled and intimidated at a public hearing about a local environmental health problem by industry and government officials who sit far away from the audience and use technical jargon to describe the issue. Native-Americans lose an important diet staple and economic activity when an industry's runoff contaminates the fish in a body of water. These examples illustrate geographical, procedural, and sociocultural inequities contributing to environmental injustices.


1986 ◽  
Vol 41 (1) ◽  
pp. 207-218 ◽  
Author(s):  
Farhad Moatamed ◽  
James E. Lockey ◽  
William T. Parry

2014 ◽  
Vol 11 (1) ◽  
pp. 103-110 ◽  
Author(s):  
MA Wares ◽  
MA Awal ◽  
M Nasrin ◽  
MNH Siddiqi

Histomorphological changes of epididymis and ductus deferens in male Black Bengal goat due to arsenic were studied. A total of 12 male Black Bengal goats, in which 6 were collected from arsenic affected areas of Mymensingh district and another 6 were collected from hill tracts of Chittagong which were arsenic free.The goats were sacrificed by piercing carotid artery and the samples (Epididymis and Ductus deferens) were collected immediately. Samples were prepared and stained with haematoxylin and eosin stain technique to study the histology under light microscope. In the morphological study, measurement of length, width, breadth and weight of epididymis and ductus deferens were observed. The gross study revealed that there were slight variations in the gross morphology of epididymis and ductus deferens of arsenic affected Black Bengal goat, but this variation was statistically insignificant. In the histological study, arsenic affected goat showing increased thickness of epididymal covering (P<0.05) and trabeculae compared to control group of epididymis. The diameter of ductule efferentes of arsenic affected goat was narrower (P<0.01), width between intertubular space of ductuli efferentes was wider (P<0.01), lumen of ductules contain smaller in amount of spermatozoa compared to control group. The wall of the ductus deferens was thicker in arsenic affected goats than the control group (P<0.01). It may be concluded that environmental health hazard of arsenic might have adverse effects on the male reproductive organs. DOI: http://dx.doi.org/10.3329/jbau.v11i1.18220 J. Bangladesh Agril. Univ. 11(1): 103-110, 2013


2015 ◽  
Vol 5 (5) ◽  
pp. 402-409
Author(s):  
Md. Rahman ◽  
Tamanna Tanu ◽  
Masum Patwary

Sensors ◽  
2020 ◽  
Vol 20 (17) ◽  
pp. 4679
Author(s):  
Wen-Cheng Vincent Wang ◽  
Tai-Hung Lin ◽  
Chun-Hu Liu ◽  
Chih-Wen Su ◽  
Shih-Chun Candice Lung

Traffic emission is one of the major contributors to urban PM2.5, an important environmental health hazard. Estimating roadside PM2.5 concentration increments (above background levels) due to vehicles would assist in understanding pedestrians’ actual exposures. This work combines PM2.5 sensing and vehicle detecting to acquire roadside PM2.5 concentration increments due to vehicles. An automatic traffic analysis system (YOLOv3-tiny-3l) was applied to simultaneously detect and track vehicles with deep learning and traditional optical flow techniques, respectively, from governmental cameras that have low resolutions of only 352 × 240 pixels. Evaluation with 20% of the 2439 manually labeled images from 23 cameras showed that this system has 87% and 84% of the precision and recall rates, respectively, for five types of vehicles, namely, sedan, motorcycle, bus, truck, and trailer. By fusing the research-grade observations from PM2.5 sensors installed at two roadside locations with vehicle counts from the nearby governmental cameras analyzed by YOLOv3-tiny-3l, roadside PM2.5 concentration increments due to on-road sedans were estimated to be 0.0027–0.0050 µg/m3. This practical and low-cost method can be further applied in other countries to assess the impacts of vehicles on roadside PM2.5 concentrations.


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