U.S. Air Force getting new GPS satellite
CAPE CANAVERAL, Fla., May 21 (UPI) — A Boeing-built satellite will give the U.S. military a stronger global positioning system, Air Force officials said.
The satellite, one of 12 in a new generation of Boeing-built GPS IIF systems, was to launch at Cape Canaveral, Fla., at 11:25 p.m. EDT Friday, the Air Force said.
The launch was moved to Friday night after mission managers Thursday needed to replace a piece of equipment used to control a swing arm on a fixed tower.
Forecasts showed an 80 percent chance of favorable weather for a launch Friday night, Florida Today reported.
The GPS, designed to improve the performance of U.S. satellites already in space, would be the first GPS satellite to ride a Delta IV into orbit.
Atomic pioneer Edwin Kintner dead at 90
EXETER, N.H., May 21 (UPI) — Nuclear pioneer Edwin Kintner, who helped develop a reactor for the first U.S. atomic-powered submarine, died at age 90 in Exeter, N.H., his family said.
Kintner died May 7 of prostate cancer, his son Eric told The New York Times in a story published Friday.
Edwin Kintner worked on reactor technology used to power the Nautilus, the first U.S. atomic submarine, which had its maiden voyage Jan. 17, 1955.
“To produce Nautilus, it was necessary to expand man’s knowledge far beyond the ‘known’ in almost every technical area — physics, metallurgy, mechanical engineering, electronics, environmental medicine,” Kintner wrote in an article for The New York Times Magazine in 1965.
Kintner also worked for the Atomic Energy Commission, was head of the U.S. Department of Energy’s fusion program and was named to oversee the cleanup when the reactor core failed at the Three Mile Island nuclear station near Harrisburg, Pa., in March 1979.
Kintner was born in Paris, Ohio, graduated from the U.S. Naval Academy and earned masters’ degrees in naval construction, ocean engineering and physics at the Massachusetts Institute of Technology.
Besides his son Eric, of Westford, Mass., he is survived by his wife, Alice, of Exeter, N.H.; sons John of Fort Lauderdale, Fla., and Peter, of Park City, Utah; and daughter, Mary, of Underhill, Vt.
Yoga improves sleep for cancer survivors
ROCHESTER, N.Y., May 21 (UPI) — Cancer survivors who tried four weeks of gentle yoga improved the quality of their sleep and were not as tired during the day, researchers in New York said.
They also used fewer sleeping pills and rated their quality of life more highly than cancer survivors who didn’t take yoga, said researcher Karen Mustian of the University of Rochester Cancer Center.
Researchers randomly assigned 410 patients to receive either their usual follow-up care after medical treatments or attend a 75-minute yoga class, twice a week. The average age of the patient was 54 and about three-quarters of the group had been treated for breast cancer.
After four weeks, the cancer survivors who took yoga reported fewer sleep problems and less fatigue.
It was not clear whether more strenuous forms of yoga would provide the same results, said Mustian, who is to present her findings at the American Society of Clinical Oncology’s annual meeting in Chicago next month.
Mercury level rises in Lake Erie walleye
LEAMINGTON, Ontario, May 21 (UPI) — Mercury levels in Lake Erie walleye appear to be increasing after two decades of steady decline, Canadian scientists said.
The researchers analyzed 5,807 fish samples collected from the Great Lakes between the 1970s and 2007.
Mercury levels in the fish steadily declined from the mid-1970s to 2007 in the upper Great Lakes of Superior and Huron and leveled-off in Lake Ontario walleye between 1990 and 2007, said Satyendra Bhavsar, a researcher with the Ministry of the Environment in Ontario.
In Lake Erie, however, walleye, a popular game fish, showed increased concentrations of mercury, Bhavsar and his team wrote in a recent issue of the journal Environmental Science & Technology.
The increases likely were caused by a combination of factors, including modifications in Lake Erie’s food web, which has been invaded by dreissenid mussels and round goby, the scientists concluded.
Government regulations and improved emissions control have greatly reduced mercury emissions in the environment, but their impact on mercury levels in Great Lakes fish is unclear, Bhavsar said.
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