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Topic: Biological halflife


  
  Encyclopedia: Nuclear power
Renewable energy (sources) or RES capture their energy from existing flows of energy, from on-going natural processes, such as sunshine, wind, flowing water, biological processes, and geothermal heat flows.
The nuclear reactors are inside the cylindrical containment buildings to the right - left is a cooling tower venting water vapor (literally a cloud).
In general, fast-spectrum reactors will produce less waste, and the waste they do produce will have a vastly lower halflife, but they are more difficult to build, and more expensive to operate.
www.nationmaster.com /encyclopedia/Nuclear-power   (10256 words)

  
 Heptachlor (PIM 578)
It causes a 6 to 11-fold increase in the liver heptachlor epoxidase (Miranda et al., 1973).
Epoxidation is an important metabolic route leading to heptachlor epoxide, which is of comparable toxicity to heptachlor but more stable in biological systems.
ACGIH (2000) Threshold limit values for chemical substances and physical agents and biological exposure indices.
www.inchem.org /documents/pims/chemical/pim578.htm   (4506 words)

  
 86.05.01: Graphing Current Drug Data
What is new is the large quantity and variety of drugs that in our technological age can be sent by land, sea and air to all parts of the world.
Therefore, what we are looking at is an issue that is causing biological, psychological and social problems around the world.
At the time of this writing, July 1986, the United States army has helicopters and troops in Bolivia trying to find and destroy hidden cocaine factories.
www.cis.yale.edu /ynhti/curriculum/units/1986/5/86.05.01.x.html   (8375 words)

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