Word: impaction
(lookup in dictionary)
(lookup stats)
Dates: all
Sort By: most recent first
(reverse)
...Apollo 17 crew in 1972. To determine how heavy the ilmenite concentrations are at that site and to look for other outcroppings as well, NASA recently decided to conduct telescope surveys of four lunar regions: Taurus-Littrow, Hadley-Apennine-landing site of Apollo 15-the unexplored Aristarchus impact crater and nearby Schroter?s Valley. Though ground-based telescopes would ordinarily be suitable for this work, in this case they wouldn?t do, since the scientists were looking for ultraviolet reflections of ilmenite, a frequency of light absorbed by Earth?s atmosphere. The only way to conduct the work...
...attitudes toward food: we keep shoving pollutants into the atmosphere with the same abandon that we shove junk food into our mouths, even though we know the results will probably be serious. Why are we not proactive when it comes to the planet? Our negligence could have a fatal impact not only on ourselves, but also on billions of innocents. Matthew Hutchison West Hollywood, California, U.S. Testifying before a U.S. senate sub-committee, Max Mayfield, director of the National Hurricane Center in Miami, said, "The increased activity since 1995 is due to natural fluctuations and cycles of hurricane activity...
...there won’t be Omorosa-esque girls clawing each other’s eyes out, why tune in at all? Johnson maintains that the show “will have a great impact on young women, in that it will show them that any girl can be a role model and have an impact on society just as the 17 unique girls on the show...
...Iraq war is coming home, with more than one of every four returning vets complaining of mental or physical wounds caused by the conflict. The first time the U.S. went to war with Iraq, in 1991, ground combat lasted precisely 100 hours, but its impact on the U.S. troops who waged it, including physical and mental scars, was ignored and belittled by the Pentagon hierarchy for years. This time, with the war going much worse for U.S. forces, the Pentagon is paying much closer attention to the invisible wounds combat is leaving on soldiers...
...economics and demography, David Canning, professor of economics and international health and Marc Weston of River Path Associates in the United Kingdom, found that previous studies on the subject of immunization focused primarily on the benefits to physical health but failed to quantify the programs’ economic impact. “The long-term productivity effects of immunization that we estimate are in addition to the direct health benefits in the form of reduced infant mortality and illness,” Canning said. The model proposed in the study added childhood health as a component of the capital variable...