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393 articles from THURSDAY 19.1.2012
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THURSDAY 19. JANUARY, 2012
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21:03
Leap second lives on, at least another week (AP)
AP - The leap second may live on for at least another three years. -
20:55LiveScience.com - A promising new system can convert brown seaweed into biofuel, opening up a new possible source of energy that could help replace fossil fuels, like gasoline, scientists reported today (Jan. 19).
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20:52
Injections Could Lift Venice 12 Inches, Study Suggests
Pumping billions of gallons of water under the sinking Italian city could save it from worsening floods as seas rise, a new study says.
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20:50AP - Exxon Mobil says 1,509 barrels of oil spilled into the Yellowstone River during a pipeline break in Montana last summer — an increase of more than 500 barrels over the company's earlier estimates.
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20:45
Amazon Rolls Out Ultra-Scalable DynamoDB
Amazon Web Services just rolled out a fully managed NoSQL database service that promises fast and predictable performance with seamless scalability. DynamoDB aims to compete with Oracle, Salesforce.com and Database.com, as well as Microsoft Azure and Google App Engine.With DynamoDB, Amazon's big idea is to help enterprises offload the admin burdens of operating and scaling distributed databases. In Amazon's view, that means no hardware provisioning; no set up; no configuration; no replication; no software patching; no partitioning; and no cluster scaling. DynamoDB offers pay-as-you-go pricing.
"Amazon has spent more than 15 years tackling the challenges of database scalability, performance and cost-effectiveness using distributed systems and NoSQL technology," said Werner Vogels, CTO of Amazon. "Amazon DynamoDB is the result of everything we've learned from building large-scale, non-relational databases for Amazon.com and building highly scalable and reliable cloud computing services at AWS."
Low Cost, Low Complexity Amazon is hammering its differentiator: scalability. While traditional databases aren't designed to scale to the performance needs of modern applications, which can experience explosive growth and cause a single database to rapidly reach its capacity limits, Amazon said DynamoDB mitigates the risk of automatically partitioning and re-partitioning data as needed to meet the latency and throughput requirements of highly demanding applications.
"We are always evaluating new technologies that will enable us to handle our large, varying workloads," said Darren Person, chief architect of Elsevier. "Operating a distributed data store on our own is orders of magnitude more complicated and expensive to manage than traditional databases. DynamoDB delivers a high-performance service that can be easily scaled up or down to meet our needs, helping us eliminate complexity and lower costs."
Amazon said customers typically witness single-digit millisecond latencies for database read and write operations. DynamoDB stores data on solid-state drives and replicates it synchronously across multiple AWS Availability Zones in an AWS...
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20:42
Blog - Web Protests Weaken Antipiracy Bills
But the fight will continue as supporters try to amend the two pieces of legislation.
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20:33
'Rules' may govern genome evolution in young plant species
A new study shows a hybrid plant species may experience rapid genome evolution in predictable patterns, meaning evolution repeats itself in populations of independent origin.
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20:33A study of discordant twins -- twins in which one has autism spectrum disorder and one doesn't -- finds the lower birth weight twins are more than three times as likely to have ASD than heavier twins. Though genetic effects are of major importance, say researchers, the study suggests a non-genetic influence associated with birth weight may contribute to development of ASD.
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20:33While recent climate negotiations in Durban made incremental progress toward helping farmers adapt to climate change and reduce agriculture's climate footprint, a group of international agriculture experts urges scientists to lay the groundwork for more decisive action on global food security in environmental negotiations in 2012.
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20:33The bottom of a glacier is not the most hospitable place on Earth, but at least two types of bacteria happily live there, according to researchers.
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20:33A disease-fighting protein in our teardrops has been tethered to a tiny transistor, enabling scientists to discover exactly how it destroys dangerous bacteria. The research could prove critical to long-term work aimed at diagnosing cancers and other illnesses in their very early stages.
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20:33Researchers have discovered that manganese, an element commonly found in nature, might provide a way to neutralize the potentially lethal effects Shiga toxin. New results could pave the way for future research aimed at creating an inexpensive treatment for infections caused by bacteria that produce the Shiga toxin. Currently there is no treatment for such infections that afflict more than 150 million people each year, resulting in more than one million deaths worldwide.
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20:24
'Rules' may govern genome evolution in young plant species
A new University of Florida study shows a hybrid plant species may experience rapid genome evolution in predictable patterns, meaning evolution repeats itself in populations of independent origin. -
20:24Apple Inc. on Thursday launched its attempt to make the iPad a replacement for a satchel full of textbooks by starting to sell electronic versions of a handful of standard high-school books.
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20:24A new government study suggests a lot of teenage girls are clueless about their chances of getting pregnant.
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20:24A receptor found on blood platelets whose importance as a potential pharmaceutical target has long been questioned may in fact be fruitful in drug testing, according to new research from Michigan State University chemists.
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20:24Concerns about the worldwide energy supply and national, environmental and economic security have resulted in a search for alternative energy sources. A new University of Illinois study shows Miscanthus x giganteus (M. x giganteus) is a strong contender in the race to find the next source of ethanol if appropriate growing conditions are identified.
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20:24Men are four times more likely to develop liver cancer compared to women, a difference attributed to the sex hormones androgen and estrogen. Although this gender difference has been known for a long time, the molecular mechanisms by which estrogens prevent -- and androgens promote -- liver cancer remain unclear.
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20:24(AP) -- Getting more small companies wired will help their businesses grow, and help their country fight unemployment, officials said Thursday as Google launched a project that makes it easy to showcase South African entrepreneurship on the Internet.
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20:24(PhysOrg.com) -- The bottom of a glacier is not the most hospitable place on Earth, but at least two types of bacteria happily live there, according to researchers.
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20:24New research from Queen Mary, University of London has uncovered a gene which plays a key role in the development of oesophageal cancer (cancer of the gullet).
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20:24Pigeons display spectacular variations in their feathers, feet, beaks and other physical traits, but a new University of Utah study shows that visible traits don't always coincide with genetics: A bird from one breed may have huge foot feathers, while a closely related breed does not; yet two unrelated pigeon breeds both may have large foot feathers.
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20:24The Huffington Post announced plans Thursday to launch an Italian edition in the latest international expansion of the news and opinion website.
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20:24Many male birds use their flashy colored feathers to lure females, but the great bowerbird of Australia has mastered the art of illusion to captivate the ladies, researchers said Thursday.
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20:24Although the genetic basis of autism is now well established, a growing body of research also suggests that environmental factors may play a role in this serious developmental disorder affecting nearly one in 100 children. Using a unique study design, a new study suggests that low birth weight is an important environmental factor contributing to the risk of autism spectrum disorder (ASD).
Naposledy aktualizované zdroje
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Guardian Unlimited Science (dnes, 12:00)
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BBC Science/Nature (dnes, 10:02)
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NYT > Science (dnes, 07:07)
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EurekAlert (dnes, 06:00)
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ScienceNOW (dnes, 01:12)
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CBC - Technology & Science News (24. 5, 22:49)
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Discovery (24. 5, 22:06)
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NASA (24. 5, 21:35)
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TIME (23. 5, 08:40)
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