Priority Subject

Environmental consequences of combustion are still a high priority requiring investigation of the chemistry and process effects on the emissions. Effective means of eliminating the pollutants is also a subject of further research. 

Populations residing near hazardous waste disposal sites may be subject to higher levels of methyl parathion in environmental media (i.e., air, groundwater, soil) than those experienced by the general population. Methyl parathion has been identified in at least 16 of the 1,585 hazardous waste sites that have been proposed for inclusion on the EPA National Priorities List (NPL). However, the number of sites evaluated for methyl parathion is not known. As more sites are evaluated, the number of sites where methyl parathion has been detected may increase. 

ATSDR. 1996a. 1995 CERCLA priority list of hazardous substances that will be the subject of toxicological profiles and support document. Atlanta, GA US Department of Health and Human Services, Public Health Service, Agency for Toxic Substances and Disease Registry. 

No studies have been conducted with silver and avian or mammalian wildlife, and it is unreasonable to extrapolate the results of limited testing with domestic poultry and livestock to wildlife to establish criteria or administratively enforced standards. Research on silver and avian and terrestrial wildlife merits the highest priority in this subject area. No silver criteria are available for the protection of avian and mammalian health, and all criteria now proposed are predicated on human health (Table 7.8). As judged by the results of controlled studies with poultry and small laboratory mammals, safe concentrations of silver ion were less than 250 pg/L in drinking water of mammals, less than 100 mg/L in drinking water of poultry, less than 6 mg/kg in diets of mammals, less than 10 mg/kg in copper-deficient diets of poultry, less than 200 mg/kg in copper-adequate diets of poultry, and less than 1.8 mg/kg in chicken eggs. The proposed short-term (10-day) allowable limit of 1142 pg Ag/L in drinking water for human health protection (Table 7.8) should... 

In regard to the development of the subject as a whole, this Review is also useful because in it most of the older literature is given its due, before other, less scrupulous authors attempt to write reviews and textbooks without proper regard for precedents and priorities. 

Now that you understand your strengths and weaknesses and you know what to expect of your test, you need to consider both factors to determine what material you need to study. First, look at the subject area or question type with which you have the most trouble. If you can expect to find questions of this type on your test, then this subject might be your first priority. But be... 

In the Calahonda study, the measurements in 1995 were all taken blind by one person (LC). In 1996 they were measured by JH. In the Manchester study of whole ejaculates, however, the priority need for anonymity combined with the collection of data over several years meant that no one person could take the measurements. I opted instead, therefore, for a conservative protocol involving each subject being measured by a different person, usually a friend or partner, who communicated the measurements on a questionnaire via intermediaries. As such, it was not possible to check the accuracy of the meas-... 

Included in the Directive 2008/105/EC as substances subject to review for possible identification as priority substances or priority hazardous substances... 

Animal welfare issues generally seem to be of low priority. This is refleeted by the fact that in 1990, animal husbandry was only the subject of 6% of all organic research projects performed in the German-speaking countries (Boehncke and Krutzinna 1996). Generally, only a few comprehensive scientific findings on animal welfare and health exist that are transferable to the... 

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