Word: occurance
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Dates: during 1980-1989
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...cirrhosis of the liver. About 5% of the U.S. population harbors non-A, non-B viruses. The majority of those who are exposed show no symptoms, but of the patients who come down with chronic liver disease, an estimated 10% die within five years. About 150,000 new infections occur each year because of blood transfusions...
...When you get into a competitive situation you have problems," Boland said. He said repeated blows to the head that occur in competitive boxing candamage the brain...
Nuclear fusion, the process that fires the sun, usually occurs when two atoms are squeezed together at very high temperatures to make one new atom. For example, two atoms of deuterium -- an isotope of hydrogen -- can be fused to form a helium atom and a neutron, releasing a sizable burst of energy. But before that can occur, deuterium nuclei generally need to be compressed with sufficient force to overcome their mutually repellent electrical charges. In H-bombs, that force is supplied by the detonation of an A-bomb. Conventional fusion techniques require giant magnets, powerful laser beams and particle accelerators...
...Upsets can occur when you look down the road at future matches," Gerstenfeld said. "The guys are aware of that, so we're taking it one match at a time...
...concrete changes to occur, students must connect their national political goals and public service work with Harvard's transgressions. They must realize that Harvard isn't just a place to take classes, but an educational institution which sets important precedents in the world...