”While any chemical can be weaponized, the chemical agents traditionally of concern fall into four categories: nerve agents like sarin, which create an anticholinergic-like syndrome; vesicants like mustard gas, that cause a blistering or burn-like syndrome; cyanide, which interrupts aerobic metabolis...
Then again, the dark specter of terrorism changes everything, and we can view chemical hazards as having even more deadly consequences and greater potential for doing harm to a community. Chemical agents were first used in modern warfare on the battlefields of Europe in World War I. Indeed, t...
Nerve agents include two primary categories, V-Series and G-series. The most recognized of the V-series agents is VX. The G agents include tabun (GA), sarin (GB), and soman (GD). The most widely used has been sarin. The “G” designation stands for German. Each of the agents in ...
cities. Applica- tion of principal component analysis indicated two broad categories of emission sources—soil and combustion— together accounting for 80 and 90% of variance, respec- tively, in PM2.5 and PM10. The soil and combustion com- ponents explained approximately 60 and 30% of the ...
Schema develop through the processes of assimilation, where the new knowledge is placed into existing categories, and accommodation, where the schema are revised to acknowledge divergent information. Constructivism acknowledges that the learner is at the center of the process. 3D modeling is inherently ...
(not just acute chemical incidents, which are the focus of this work, but including, e.g., chronic and environmental exposures). This could be further integrated with surveillance systems for other health threats, to compile a comprehensive all hazards approach to current health threats in a ...
Hazards of plastic wastes to animals There are two general types of hazards that polymers can introduce into the aquatic environment. One of these relates to the release of small molecules that act as hormone disruptors as described above. It is well established that small aquatic animals such as...
"Heavy mountains", for today's eastern coastal areas of chemical hazards and chemical confusion, we need not be too much entanglement and stop, China's chemical industry, the layout of globalization, the domestic regional pfer of the rapid pfer of history is speeding up, as long as we confo...
The level of risk depends on the characteristic hazards of the chemicals handled in the factory and the amount of chemicals stored. The risk level also depends on whether the factory has facilities that can minimize damage in the event of an accident, such as water curtains or fire extinguishin...
From these first results, lubricants and plasticizers are the two most abundant categories of APFs. These additives are most commonly used for packaging materials and also to give specific properties to plastic objects [58]. For instance, elastomers need plasticizers to become softened [61]. ...