Source: http://news.feedzilla.com/en_us/stories/politics/top-stories/295484911?client_source=feed&format=rss
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Sunday, 31 March 2013
Rep. Don Young apologizes for racial slur
By Martyn Herman LONDON, March 28 (Reuters) - Whether by design, necessity, self-interest or because of all three, nurturing youngsters has become fashionable for England's elite with no expense spared in the hunt for the new Wayne Rooney or Steven Gerrard. The length and breadth of the country, scouts from top clubs are hoovering up promising footballers barely old enough to tie their bootlaces in a bid to unearth the 30 million pounds ($45.40 million) treasures of the future. ...
Source: http://news.yahoo.com/alaska-lawmaker-apologizes-racial-slur-121208077.html
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Look out squirrels: Leopards are new backyard wildlife
Friday, March 29, 2013
A new study led by WCS-India scientist Vidya Athreaya finds that certain landscapes of western India completely devoid of wilderness and with high human populations are crawling with a different kind of backyard wildlife: leopards.
The study found as many as five adult large carnivores, including leopards and striped hyenas, per 100 square kilometers (38 square miles), a density never before reported in a human-dominated landscape.
The study, called "Big Cats in Our Backyards," appeared in the March 6 edition of the journal PLoS One. Authors include: Vidya Athreya and Ullas Karanth of the Wildlife Conservation Society and Centre for Wildlife Studies in Bangalore; Morten Odden of Hedmark University College; John D. C. Linnell of the Norwegian Institute for Nature Research; and Jagdish Krishnaswamy of Asoka Trust for Research of Ecology in the Environment.
Using camera traps, the authors founds that leopards often ranged close to houses at night though remained largely undetected by the public. Despite this close proximity between leopards and people, there are few instances of attacks in this region. The authors also photographed rusty spotted cat, small Indian civet, Indian fox, jungle cat, jackal, mongoose ? and a variety of people from the local communities. The research took place in western Maharashtra, India.
"Human attacks by leopards were rare despite a potentially volatile situation considering that the leopard has been involved in serious conflict, including human deaths in adjoining areas," said big cat expert Ullas Karanth of WCS. "The results of our work push the frontiers of our understanding of the adaptability of both humans and wildlife to each other's presence."
The authors say that the findings show that conservationists must look outside of protected areas for a more holistic approach to safeguarding wildlife in a variety of landscapes.
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Wildlife Conservation Society: http://www.wcs.org
Thanks to Wildlife Conservation Society for this article.
This press release was posted to serve as a topic for discussion. Please comment below. We try our best to only post press releases that are associated with peer reviewed scientific literature. Critical discussions of the research are appreciated. If you need help finding a link to the original article, please contact us on twitter or via e-mail.
This press release has been viewed 52 time(s).
Source: http://www.labspaces.net/127521/Look_out_squirrels__Leopards_are_new_backyard_wildlife
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Grand jury indicts about 3 dozen educators in Atlanta Public Schools cheating scandal
The saga of Biscuit, a 37-pound feline from the St. Louis area, isn't quite done yet. The tubby tabby had to find another home after his first one didn't work out after leaving an area shelter in mid-March. The St. Louis Post-Dispatch reports Ed and Lisa Pyatt of Eureka, Mo., were the lucky recipients of Biscuit after the City of St. Charles Animal Control Services reviewed more than 110 offers for homes. The huge cat didn't get along with the Pyatts' other cat. Luckily, a specialized animal shelter stepped in to help.
Source: http://news.yahoo.com/grand-jury-indicts-3-dozen-educators-atlanta-public-213500486.html
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Microsoft allows Windows 8 to run on smaller displays: is a reader-sized Surface on its way?
Until now, Windows 8's official hardware requirements have been understandably ruthless: devices with anything less than 1,366 x 768 pixels need not apply. That policy was changed in a recent newsletter, however, to permit the creation of Windows 8 devices with a resolution of 1,024 x 768 -- likely representing a very different size and shape. Microsoft says the policy switch isn't meant to "encourage partners to regularly use a lower screen resolution", and it warns that such dimensions will be incompatible with Windows 8's split-screen feature, known as "snap". Which raises the question -- why mess with the rules?
Ed Bott over at ZDNet has an interesting theory. 1,024 x 768 matches the size and aspect ratio of many popular reader-sized tablets, like the iPad Mini, which are meant to be used in both portrait and landscape orientations. There's no official confirmation either way, of course, but Bott believes Microsoft's move could be deliberately aimed at allowing the development of 7- or 8-inch Windows 8 (or RT) tablets, possibly with the close help of Nook-maker Barnes & Noble. Indeed, Mary Jo Foley spotted that Redmond and B&N have registered a new joint venture, "NewCo", that explicitly mentions the creation of a "Microsoft reader". Considering all these clues, can a Wook (WiNook?) really be that far off?
Filed under: Tablets, Software, Microsoft
Source: ZDNet, Windows Certification Newsletter
Source: http://feeds.engadget.com/~r/weblogsinc/engadget/~3/LLsu5u348ns/
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Principal dead in grenade attack in Pakistan
KARACHI, Pakistan (AP) ? A man armed with a gun and grenades attacked a school in southern Pakistan during a prize distribution ceremony on Saturday, killing its principal and wounding six children before fleeing.
Police officer Nasir Mehmood said the attacker struck as dozens of children were gathered outside at their private school in Karachi to receive the results of their annual exam.
TV showed panicked relatives of the wounded children, who were between the ages of 8 and 10, crying outside the school in the port city's Ittehad Town neighborhood.
There was no immediate claim of responsibility.
Another police officer, Asif Ijaz Sheikh, said the slain principal was a local leader of the Awami National Party (ANP). He said police were still investigating the identity of the attacker, who threw two grenades and then opened fire on Khan and children who were standing near him.
Karachi has been the scene of scores of bomb and gun attacks in recent years. Gangs controlled by various groups, including the city's two main political parties the Muttahida Quami Movement and the ANP, have also been blamed for targeted killings of their rivals.
The MQM primarily represents the Urdu-speaking descendants of those who came to Karachi from India soon after the birth of Pakistan.
The group's main rival, the ANP, represents ethnic Pashtuns from Pakistan's northwest.
The ANP also has a tense relationship with the Pakistani Taliban, and the militants in recent years have targeted several party leaders, including one senior politician, Bashir Bilour, who died in a suicide attack in December 2012.
Also Saturday, a suicide bomber blew himself up near a police patrol in a bazaar in the northwestern town of Mardan, killing an officer and wounding two policemen and two passers-by, senior police officer Jafar Khan said.
He said other police spotted an associate and killed him after a short chase.
No one claimed responsibility, but the Pakistani Taliban often target police and security forces in the region and elsewhere in the country.
___
Associated Press writer Riaz Khan in Peshawar, Pakistan, contributed to this report.
Source: http://news.yahoo.com/principal-dead-grenade-attack-pakistan-090709301.html
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Light may recast copper as chemical industry 'holy grail'
Friday, March 29, 2013
Wouldn't it be convenient if you could reverse the rusting of your car by shining a bright light on it? It turns out that this concept works for undoing oxidation on copper nanoparticles, and it could lead to an environmentally friendly production process for an important industrial chemical, University of Michigan engineers have discovered.
"We report a new physical phenomenon that has potentially significant practical implications," said Suljo Linic, an associate professor of chemical engineering, who led the study, which is published in the March 29 issue of Science.
Copper's newfound ability to shake off oxygen attached to its surface could allow it to act as a catalyst for a long-sought reaction, causing oxygen molecules to bind with propylene molecules in the way that forms propylene oxide. Propylene oxide is a precursor for making many plastics, toiletries and other household products such as antifreeze, paints and insulating foams. To meet demand for these products, the U.S. produces more than 2.4 million metric tons of propylene oxide per year, worth about $4.9 billion.
Unfortunately, producing propylene oxide involves a complex chain of reactions that generate unwanted chemicals. The process that provides about half of the propylene oxide in the U.S. also produces about twice as many tons of salt.
A catalyst that can coax propylene and oxygen to form propylene oxide in a direct reaction, avoiding the waste, has been highly sought after. Metallic copper showed promise, but it had?until now?been written off because it tends to bind itself to oxygen, forming copper oxide, which has poor catalytic properties.
"Copper in metallic form has this unique electronic structure that activates the reaction pathway for propylene oxide more than the undesired pathways," said Marimuthu Andiappan, a graduate student in chemical engineering and first author on the paper.
Metallic copper prefers to bind oxygen with two of the propylene's carbon atoms, forming propylene oxide. Copper oxide, on the other hand, tends to break the propylene down into carbon dioxide or attach the oxygen to only one carbon atom, resulting in the herbicide acrolein.
However, Andiappan, Linic, and former chemical engineering graduate student Jianwen Zhang found that if copper is cleverly structured, light can reverse its oxidation. The team made copper nanoparticles about 40 nanometers across, or roughly one-hundredth of the thickness of a strand of spider silk. They peppered tiny particles of clear silica with the nanoparticles and then floated a gas of propylene and oxygen over the resulting dust.
In the dark, the copper oxidized, and only 20 percent of the gas converted to propylene oxide. But under white light, five times the sun's intensity, the copper stayed in the metallic state and turned 50 percent of the propylene into propylene oxide.
"To our knowledge, this is the first time anyone has shown that light can be used to switch the oxidation state from an oxide to a metallic state," Andiappan said.
The metallic copper under the oxidized surface concentrated the light, freeing electrons from copper atoms. Those electrons then broke the bonds between the copper and oxygen.
A new kind of reactor that can illuminate the catalyst will be needed to bring this potentially cheap and environmentally friendly way of making propylene oxide to industry.
"Theoretically, it is possible to use mirrors to focus sunlight and get this much intensity," Andiappan said.
"We are just scratching the surface," Linic said. "I can envision many processes that wouldn't be possible with conventional strategies, where changing the oxidation state during the reaction or driving reactions with light could affect the outcome dramatically."
###
The paper describing this work is titled "Tuning selectivity in propylene epoxidation by plasmon mediated photo-switching of Cu oxidation state."
University of Michigan: http://www.umich.edu/
Thanks to University of Michigan for this article.
This press release was posted to serve as a topic for discussion. Please comment below. We try our best to only post press releases that are associated with peer reviewed scientific literature. Critical discussions of the research are appreciated. If you need help finding a link to the original article, please contact us on twitter or via e-mail.
This press release has been viewed 33 time(s).
Source: http://www.labspaces.net/127510/Light_may_recast_copper_as_chemical_industry__holy_grail_
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