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279,034 articles from PhysOrg

Study finds high level of bacteria in bottled water in Canada

A Montreal study finds heterotrophic bacteria counts, in more than 70 percent of bottled water samples, exceed the recommended limits specified by the United States Pharmacopeia (USP). Researchers from Ccrest laboratories report their results today at the 110th General Meeting of the American Society for Microbiology in San Diego.

Supermassive black holes may frequently roam galaxy centers

A team of astronomy researchers at Florida Institute of Technology and Rochester Institute of Technology in the United States and University of Sussex in the United Kingdom, find that the supermassive black hole (SMBH) at the center of the most massive local galaxy (M87) is not where it was expected. Their research, conducted using the Hubble Space Telescope (HST), concludes that the SMBH in M87...

High-energy project in high desert

The sprawling solar installations gobbling up California's deserts have a new competitor, one that claims to generate more energy at lower costs while using less open space. Known as concentrator photovoltaics, or CPV, the technology is featured in an installation that will be revealed Tuesday at Victor Valley College.

High-strain tendons repair less frequently

In a discovery that seems counterintuitive, a study appearing in the May 21st Journal of Biological Chemistry has found that tendons in high-stress and strain areas, like the Achilles tendon, actually repair themselves less frequently than low-stress tendons. This study sheds some light on the increased susceptibility of certain tendons to injury during aging.

Scaling Goes eXtreme: Researchers reach 34K CPUs

(PhysOrg.com) -- Currently, researchers have demonstrated the scalability of high-level excited-state coupled-cluster approaches and parallel-in-time algorithms, reaching a staggering 34,000 Core Processing Units.  Researchers at Pacific Northwest National Laboratory are targeting the software that is capable of describing the behavior of molecules in excited states, as well simulating their...

Coastal birds carry toxic ocean metals inland

A collaborative research team led by Queen's University biologists has found that potent metals like mercury and lead, ingested by Arctic seabirds feeding in the ocean, end up in the sediment of polar ponds.

Lawmakers look to ban drop-side cribs

(AP) -- Cribs with a side rail that moves up and down so parents can lift children from them more easily would be banned under legislation aimed at reducing infant deaths.

New book reviews research on key signaling molecule, NF-kB

NF-κB is a critical signaling molecule in the immune system that regulates cell survival and cell death, lymphocyte responses, and inflammation. Acting as a transcription factor that can receive several inputs, it coordinates distinct gene expression programs in response to a wide variety of stimuli.

Researchers move closer to a universal influenza vaccine

Researchers at Mount Sinai School of Medicine have developed a new influenza vaccine that brings science one step closer to a universal influenza vaccine that would eliminate the need for seasonal flu shots. The new findings can be found in the inaugural issue of mBio, the first online, open-access journal published by the American Society for Microbiology.