Author Archives: Guest Post

Resident Evil: Retribution

Synopsis

The Umbrella Corporation’s deadly T-virus continues to ravage the Earth, transforming the global population into legions of the flesh eating Undead. The human race’s last and only hope, Alice, awakens in the heart of Umbrella’s most clandestine operations facility and unveils more of her mysterious past as she delves further into the complex. Without a safe haven, Alice continues to hunt those responsible for the outbreak; a chase that takes her from Tokyo to New York, Washington, D.C. and Moscow, culminating in a mind-blowing revelation that will force her to rethink everything that she once thought to be true. Aided by newfound allies and familiar friends, Alice must fight to survive long enough to escape a hostile world on the brink of oblivion. The countdown has begun. (more…)

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A New Way of Looking at Photosystem II

Berkeley Lab and SLAC Researchers Study Key Protein Complex Crucial to Photosynthesis

Future prospects for clean, green, renewable energy may hinge upon our ability to mimic and improve upon photosynthesis – the process by which green plants, algae and some bacteria convert solar energy into electrochemical energy. An artificial version of photosynthesis, for example, could use sunlight to produce liquid fuels from nothing more than carbon dioxide and water. First, however, scientists need a better understanding of how a large complex of proteins, called photosystem II, is able to split water molecules into oxygen, electrons and hydrogen ions (protons). A new road to reaching this understanding has now been opened by an international team of researchers, led by scientists at the U.S. Department of Energy (DOE)’s Lawrence Berkeley National Laboratory (Berkeley Lab) and SLAC National Accelerator Laboratory.

Using ultrafast, intensely bright pulses of X-rays from SLAC’s Linac Coherent Light Source (LCLS), the research team produced the first ever images at room temperature of microcrystals of the photosystem II complex. Previous imaging studies, using X-rays generated via synchrotron radiation sources, required cryogenic freezing, which alters the samples. Also, to catalyze its reactions, photosystem II relies upon an enzyme that contains a manganese-calcium cluster that is highly sensitive to radiation. With the high-intensity femtosecond X-ray pulses of the LCLS, the research team was able to record intact images of these clusters before the radiation destroyed them. (more…)

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Vampire Bat Study May Lead to Better Rabies-Control Strategies

ANN ARBOR, Mich.— A new study of rabies in vampire bats in Peru has found that culling bats—a common rabies control strategy—does not reduce rates of rabies exposure in bat colonies, and may even be counterproductive.

The findings may eventually help public health and agriculture officials in Peru develop more effective methods for preventing rabies infections in humans and livestock, according to a team of scientists from the United States and Peru led by Daniel Streicker, a postdoctoral associate at the University of Georgia Odum School of Ecology.

The study was published online this week in the Proceedings of the Royal Society B. The research team includes University of Michigan population ecologist Pejman Rohani. (more…)

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How to Find the Right Business Credit Card

Even in a volatile economy, business can still flourish with the right attitude and the proper financial discipline. Liquidity and cash flow is essential to the continued operations of a business in the short term and in the long-term. With many of the traditional financing options unavailable to small businesses, the only course of action for many business owners is to find the right business credit card.

The right business credit card can provide a business owner with liquidity in emergency situations. It can also be a lifesaver in that the business owner will not have to wait on any bureaucracy or paperwork in order to get the money that he or she needs to fix a short-term situation. (more…)

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comScore Releases May 2012 U.S. Search Engine Rankings

RESTON, VA, June 13, 2012 – comScore, Inc., a leader in measuring the digital world, today released its monthly comScore qSearch analysis of the U.S. search marketplace. Google Sites led the explicit core search market in May with 66.7 percent of search queries conducted.

U.S. Explicit Core Search

Google Sites led the U.S. explicit core search market in May with 66.7 percent market share (up 0.2 percentage points), followed by Microsoft Sites with 15.4 percent and Yahoo! Sites with 13.4 percent. Ask Network accounted for 3 percent of explicit core searches, followed by AOL, Inc. with 1.5 percent. (more…)

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Woolly Mammoth Extinction Has Lessons for Modern Climate Change

Although humans and woolly mammoths co-existed for millennia, the shaggy giants disappeared from the globe between 4,000 and 10,000 years ago, and scientists couldn’t explain until recently exactly how the Flintstonian behemoths went extinct.

In a paper published June 12 in the journal Nature Communications, UCLA researchers and colleagues reveal that not long after the last ice age, the last woolly mammoths succumbed to a lethal combination of climate warming, encroaching humans and habitat change — the same threats facing many species today. (more…)

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