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Tag: study

Lockheed to study risk reduction, deliverability of redesigned nuclear warhead

Lockheed to study risk reduction, deliverability of redesigned nuclear warhead

Business
Oct. 17 (UPI) -- Lockheed Martin has received a $ 108.3 million contract from the U.S. Air Force for research on the Mk21A Reentry Vehicle for use with a redesigned nuclear warhead. The deal, announced Wednesday by the Department of Defense, calls for risk reduction and technology maturation studies to offer a low-cost, low technical risk re-entry vehicle capable of delivering the W87-1 nuclear warhead using the Air Force's Ground Based Strategic Deterrent Weapon System. The re-entry vehicle components include a high velocity nose tip, high impulse transducer, fuse, electronic devices, and various shells and other external bodywork. The W-78 series is one of the oldest nuclear warheads in the U.S. nuclear arsenal, dating to 1979. A modification program, W87-1, began with feasibility stud...
New study finds genetic link to some SIDS cases

New study finds genetic link to some SIDS cases

Health
Oct. 11 (UPI) -- A genetic anomaly may be responsible for some cases of Sudden Infant Death Syndrome, which kills more than 3,000 toddlers annually, according to a study released Friday. The study by University of Washington researchers, published in Nature Communications, examined the impact of mitochondrial tri-functional protein deficiency, a possibly fatal cardiac metabolic disorder caused by a genetic mutation in the gene HADHA. Researchers said babies with the genetic anomaly can't metabolize the lipids found in milk, and die suddenly of cardiac arrest when they are a few months old. The Centers for Disease Control and Prevention says about 3,500 babies in the United States die suddenly and unexpectedly each year. Sudden unexpected infant deaths include SIDS, accidental suffocation...
ICON satellite to study the ionosphere, the boundary between Earth’s atmosphere and space

ICON satellite to study the ionosphere, the boundary between Earth’s atmosphere and space

Science
Oct. 8 (UPI) -- Inside the outermost layer of Earth's atmosphere, billions of negatively charged electrons bounce freely for long periods of time before being tamed by positive ions. The layer, the ionosphere, and its highly variable plasma waves can disrupt GPS signals and other radio-wave-based communication systems. To better understand the ionosphere and pinpoint the forces responsible for its variability, scientists at NASA are sending a specially equipped satellite into space to observe the enigmatic layer. The Ionospheric Connection Explorer, or ICON, developed by a team of scientists and engineers at the University of California, Berkeley, will be carried into space this week by Northrup Grumman's Pegasus XL rocket. "ICON is built specifically to understand the connection between...
CDC study to track dangerous ‘forever chemicals’ in drinking water

CDC study to track dangerous ‘forever chemicals’ in drinking water

Health
Sept. 27 (UPI) -- The Centers For Disease Control and Prevention announced a new multi-site study this week that will investigate the health effects of drinking water contaminated with per- and polyfluoroalkyl substances, or PFAS. The new study -- the first to examine multiple sites of PFAS contamination nationwide -- was authorized by the National Defense Authorization Acts of 2018 and 2019 to provide information to communities about the health effects of PFAS exposure. The CDC will award initial grants totaling $ 7 million to begin the study, with a goal of understanding the relationship between PFAS exposure and health outcomes in differing populations. The study will recruit at least 2,000 children ages 4 to 17, and 6,000 adults over age 18, who have been exposed to PFAS-contaminated...