منابع مشابه
Non-polluting Automobiles
The advantages/disadvantages of energy storage devices, which can provide nonpolluting automobile systems are discussed. Four types of storage devices are identified: electro-chemical (batteries) hydrogen electro-mechanical (flywheels) Molten salt heat storage A high speed flywheel with a small permanent magnet motor/generator has more advantages than any of the other systems and might become a...
متن کاملA less polluting pig.
A Less Polluting Pig There's good news in the fight against farm pollution, say researchers in the Department of Molecular Biology and Genetics at the University of Guelph in Ontario, Canada. In August, John Phillips, Cecil Forsberg, and Serguei Golovan announced a new kind of pig that makes better use of phosphorus, a nutrient that in high concentrations can deplete oxygen levels in waters dow...
متن کاملYour general practice environment can improve your community's health.
British Journal of General Practice, July 2008 choices between personal income and service development, can only be part of the solution. Addressing the inverse care law is made difficult by three other problems: first, the front line of this part of the NHS is largely hidden from external view, as a result of its geographically scattered nature, the lack of evidence, limited nature of routine ...
متن کاملThe Race for Polluting Permits
International markets for tradable emission permits (TEP) co-exist with national energy taxation. A firm trading emission permits in the international market also pays energy taxes in its host country, thus creating an interaction between the international TEP-market and national energy taxes. In this paper we model that interaction in a framework of a perfectly competitive international TEP-ma...
متن کاملConstancy of the Internal Environment
Claude Bernard (1813-1878) was the founder of modern experimental physiology and one of the most famous French scientists of all time. Although he is particularly remembered today for his concept of the constancy of the internal environment, this idea had no impact in his lifetime. This article considers his achievements and some possible reasons for the delay in understanding his ideas about t...
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ژورنال
عنوان ژورنال: Environmental Health Perspectives
سال: 2002
ISSN: 0091-6765,1552-9924
DOI: 10.1289/ehp.110-a42b