Monday, March 25, 2013

Officials: US training Syrians forces in Jordan

In this Sunday, March 24, 2013 image taken from video obtained from the Ugarit News, which has been authenticated based on its contents and other AP reporting, Free Syrian Army fighters drops a shell into a firing tube, in Damascus countryside, Syria. (AP Photo/Ugarit News via AP video)

In this Sunday, March 24, 2013 image taken from video obtained from the Ugarit News, which has been authenticated based on its contents and other AP reporting, Free Syrian Army fighters drops a shell into a firing tube, in Damascus countryside, Syria. (AP Photo/Ugarit News via AP video)

(AP) ? The United States is training secular Syrian fighters in Jordan in a bid to bolster forces battling President Bashar Assad's regime and stem the influence of Islamist radicals among the country's persistently splintered opposition, American and foreign officials said.

The training has been conducted for several months now in an unspecified location, concentrating largely on Sunnis and tribal Bedouins who formerly served as members of the Syrian army, officials told The Associated Press. The forces aren't members of the leading rebel group, the Free Syrian Army, which Washington and others fear may be increasingly coming under the sway of extremist militia groups, including some linked to al-Qaida, they said.

The operation is being run by U.S. intelligence and is ongoing, officials said, but those in Washington stressed that the U.S. is providing only nonlethal aid at this point. Others such as Britain and France are involved, they said, though it's unclear whether any Western governments are providing materiel or other direct military support after two years of civil war that according to the United Nations already has killed more than 70,000 people.

The officials spoke on condition of anonymity because they weren't authorized to speak publicly about the program.

Officially, the Obama administration has been vague on the subject of what type of military training it may be providing, while insisting that it is doing all it can ? short of providing weapons to the rebels or engaging in its own military intervention ? to hasten the demise of the Assad family's four-decade dictatorship.

White House spokesman Josh Earnest said Monday the U.S. has "provided some logistical nonlethal support that has also come in handy for the Syrian rebels who are, again, fighting a regime that is not hesitating to use the military might of that regime against its own people.

"That is something we're going to continue to work to bring to an end," he told reporters.

It's unclear what effect the training has had in the conflict, which has become a quagmire with Assad's regime unable to snuff out the rebellion and Syria's opposition incapable thus far of delivering any serious blow to the ruling government's grip on Damascus and control over much of the country.

Some of the Syrians the U.S. is involved with are, in turn, training other Syrians inside the border, officials said.

They declined to provide more information because they said that would go too deep into intelligence matters. Defense Department officials insisted the Pentagon isn't involved with any military training or arms provisions to the Syrian rebels, either directly or indirectly. The CIA declined to comment.

The New York Times reported Monday that the CIA helped Arab governments and Turkey sharply increase their military aid to Syria's opposition in recent months, with secret airlifts or arms and equipment. It cited traffic data, officials in several countries and rebel commanders, and said the airlift began on a small scale a year ago but has expanded steadily to more than 160 military cargo flights by Jordanian, Saudi and Qatari planes landing in Turkish and Jordanian airports.

The training in Jordan, however, suggests the U.S. help is aimed somewhat at enhancing the rebels' capacity in southern Syria, the birthplace of the revolution two years ago when teenagers in the sleepy agricultural outpost of Dara'a scribbled graffiti on a wall and were tossed into jail, spurring Syria's own version of an Arab Spring uprising. Much of the violence since, however, has been in the northern of the country where rebels have scored several military successes after the Assad regime cracked down brutally on peaceful protesters.

Despite months of U.S. and international support to build a cohesive political movement, however, Syria's fractured opposition is still struggling to rally Syrians behind a common post-Assad vision. And the opposition coalition appears as much hampered by its political infighting as its military deficiencies against an Assad regime arsenal of tanks, fighter jets and scud missiles.

The coalition's president, Mouaz al-Khatib, resigned his position on Sunday because of what he described as restrictions on his work and frustration with the level of international aid. He said Monday he would still represent the opposition this week in Doha, where the Gulf state of Qatar will host a two-day Arab League summit starting Tuesday.

Al-Khatib's resignation comes only days after the opposition chose Ghassan Hitto, a long-time Texas resident, to head its interim government after intense wrangling over posts and influence that U.S. officials say has strained the opposition's unity and caused friction among its primary benefactors Saudi Arabia, Qatar and Turkey.

It's also unclear how al-Khatib's departure will affect the U.S. goal of political negotiations with amenable members of the Assad regime to end the civil war, given the moderate preacher's support for talks. Much of the Syrian opposition, including Hitto, rejects such talks.

"He's been a courageous leader," State Department spokesman Patrick Ventrell said of al-Khatib.

"But the bottom line is what we're looking for is unity," Ventrell said. "We continue to support the coalition's vision for a tolerant, inclusive Syria. We want them to continue to work together to implement that vision."

Secretary of State John Kerry travels to Paris on Wednesday to meet French Foreign Minister Laurent Fabius for talks expected to focus on arming Syrian rebels. The discussions also are expected to touch on the suspected use of chemical weapons in Syria, according to French officials.

U.S. officials say there are strong indications that chemical weapons weren't used in an attack last week in northern Aleppo, over which the regime and the rebels have issued counterclaims.

Washington has said it will support a U.N. investigation.

___

Associated Press writers Lolita C. Baldor and Lara Jakes in Washington and Jamal Halaby in Amman, Jordan, contributed to this report.

Associated Press

Source: http://hosted2.ap.org/APDEFAULT/3d281c11a96b4ad082fe88aa0db04305/Article_2013-03-25-US-Syria/id-17a945e7ea73478aa0fd7b679eb57136

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Measuring the magnetism of antimatter: Antiprotons measured more accurately than ever before

Mar. 25, 2013 ? In a breakthrough that could one day yield important clues about the nature of matter itself, a team of Harvard scientists have succeeding in measuring the magnetic charge of single particles of matter and antimatter more accurately than ever before.

As described in a March 25 paper in Physical Review Letters, the ATRAP team, led by Gerald Gabrielse, the George Vasmer Leverett Professor of Physics, and including post-doctoral fellows Stephan Ettenauer and Eric Tardiff and graduate students Jack DiSciacca, Mason Marshall, Kathryn Marable and Rita Kalra was able to capture individual protons and antiprotons in a "trap" created by electric and magnetic fields. By precisely measuring the oscillations of each particle, the team was able to measure the magnetism of a proton more than 1,000 times more accurately than an antiproton had been measured before. Similar tests with antiprotons produced a 680-fold increase in accuracy in the size of the magnet in an antiproton.

"That is a spectacular jump in precision for any fundamental quality," Gabrielse said, of the antiproton measurements. "That's a leap that we don't often see in physics, at least not in a single step."

Such measurements, Gabrielse said, could one day help scientists answer a question that seems more suited for the philosophy classroom than the physics lab -- why are we here?

"One of the great mysteries in physics is why our universe is made of matter," he said. "According to our theories, the same amount of matter and antimatter was produced during the Big Bang. When matter and antimatter meet, they are annihilated. As the universe cools down, the big mystery is: Why didn't all the matter find the antimatter and annihilate all of both? There's a lot of matter and no antimatter left, and we don't know why."

Making precise measurements of protons and antiprotons, Gabrielse explained, could begin to answer those questions by potentially shedding new light on whether the CPT (Charge conjugation, Parity transformation, Time reversal) theorem is correct. An outgrowth of the standard model of particle physics, CPT states that the protons and antiprotons should be virtually identical -- with the same magnitude of charge and mass -- yet should have opposite charges.

Though earlier experiments, which measured the charge-to-mass ratio of protons and antiprotons, verified the predictions of CPT, Gabrielse said further investigation is needed because the standard model does not account for all forces, such as gravity, in the universe.

"What we wanted to do with these experiments was to say, 'Let's take a simple system -- a single proton and a single antiproton -- and let's compare their predicted relationships, and see if our predictions are correct," Gabrielse said. "Ultimately, whatever we learn might give us some insight into how to explain this mystery."

While researchers were able to capture and measure protons with relative ease, antiprotons are only produced by high-energy collisions that take place at the extensive tunnels of the CERN laboratory in Geneva, Gabrielse said, leaving researchers facing a difficult choice.

"Last year, we published a report showing that we could measure a proton much more accurately than ever before," Gabrielese said. "Once we had done that, however, we had to make a decision -- did we want to take the risk of moving our people and our entire apparatus -- crates and crates of electronics and a very delicate trap apparatus -- to CERN and try to do the same thing with antiprotons? Antiprotons would only be available till mid-December and then not again for a year and a half.

"We decided to give it a shot, and by George, we pulled it off," he continued. "Ultimately, we argued that we should attempt it, because even if we failed, that failure would teach us something." In what Gabrielse described as a "gutsy" choice, graduate student Jack DiSciacca agreed to use this attempt to conclude his thesis research, and new graduate students Marshall and Marable signed on to help.

Though their results still fit within the predictions made by the standard model, Gabrielse said being able to more accurately measure the characteristics of both matter and antimatter may yet help shed new light on how the universe works.

"What's also very exciting about this breakthrough is that it now prepares us to continue down this road," he said. "I'm confident that, given this start, we're going to be able to increase the accuracy of these measurements by another factor of 1,000, or even 10,000."

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The above story is reprinted from materials provided by Harvard University, via EurekAlert!, a service of AAAS.

Note: Materials may be edited for content and length. For further information, please contact the source cited above.


Journal Reference:

  1. J. DiSciacca, M. Marshall, K. Marable, G. Gabrielse, S. Ettenauer, E. Tardiff, R. Kalra, D. W. Fitzakerley, M. C. George, E. A. Hessels, C. H. Storry, M. Weel, D. Grzonka, W. Oelert, T. Sefzick. One-Particle Measurement of the Antiproton Magnetic Moment. Physical Review Letters, 2013; 110 (13) DOI: 10.1103/PhysRevLett.110.130801

Note: If no author is given, the source is cited instead.

Disclaimer: Views expressed in this article do not necessarily reflect those of ScienceDaily or its staff.

Source: http://feeds.sciencedaily.com/~r/sciencedaily/top_news/top_science/~3/7793vig8o2c/130325094030.htm

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Sunday, March 24, 2013

Lawmakers calls for more US involvement in Syria

WASHINGTON (AP) ? The Republican chairman of the House Intelligence Committee is calling for greater United States involvement in Syria through the creation of safe zone that would allow the U.S. military to train opposition forces attempting to overthrow President Bashar Assad.

Rep. Mike Rogers of Michigan said on CBS "Face the Nation" on Sunday that he doesn't want to lure the United States into a "big boots, on-the-ground conflict."

However, Rogers said he believes a greater U.S. presence is necessary to prevent chemical and conventional weapons from falling into the hands of anyone who would like to harm the United States if Assad is forced out.

Associated Press

Source: http://hosted2.ap.org/APDEFAULT/89ae8247abe8493fae24405546e9a1aa/Article_2013-03-24-US-Syria-Intelligence%20Chairman/id-19ebccec71674d2b96c93c2b16d9247a

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Lindsay Lohan Caught Slamming Down Vodka Hours After Rehab Deal

Lindsay Lohan Caught Slamming Down Vodka Hours After Rehab Deal

Lindsay Lohan slamming down vodkaLindsay Lohan appears to be on a downward spiral, spotted drinking vodka just hours after her court hearing. Lohan had just struck a plea deal to enter rehab for 90 days but that didn’t stop the troubled actress from partying the night away. The 26-year-old actress was seen at the Beverly Hills hotel bar after ...

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Source: http://stupidcelebrities.net/2013/03/lindsay-lohan-caught-slamming-down-vodka-hours-after-rehab-deal/

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10 Ways Samsung's Galaxy S4 Is Better Than The iPhone 5 (AAPL)

Summary

The iPhone 5 is the most recent update of Apple's smartphone, unveiled the iPhone 5 on September 12, 2012. Here are the new iPhone 5 specs: ? Price of the iPhone 5: 16GB is $199, 32GB $299, 64GB $399. (The iPhone 4 is now... More ?

Source: http://www.businessinsider.com/the-galaxy-s-4-is-better-than-the-iphone-5-2013-3

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Saturday, March 23, 2013

Global nitrogen availability consistent for past 500 years, linked to carbon levels

Global nitrogen availability consistent for past 500 years, linked to carbon levels

Friday, March 22, 2013

A Kansas State University research team has found that despite humans increasing nitrogen production through industrialization, nitrogen availability in many ecosystems has remained steady for the past 500 years. Their work appears in the journal Nature.

"People have been really interested in nitrogen in current times because it's a major pollutant," said Kendra McLauchlan, assistant professor of geography and director of the university's Paleoenvironmental Laboratory. "Humans are producing a lot more nitrogen than in the past for use as crop fertilizer, and there is concern because excess levels can cause damage. The mystery, though, is whether the biosphere is able to soak up this extra nitrogen and what that means for the future."

Nitrogen is a key component of the ecosystem and the largest regulator of plant growth. It determines how much food, fuel and fiber the land can produce. It also determines how much carbon dioxide plants remove from the atmosphere, and it interacts with several components of the climate system. Excessive amounts of nitrogen in ecosystems contribute to global warming and impairment of downstream ecosystems.

McLauchlan worked with Joseph Craine, research assistant professor in biology; Joseph Williams, postdoctoral research associate; and Elizabeth Jeffers, postdoctoral research associate at the University of Oxford. The team published their findings, "Changes in global nitrogen cycling during the Holocene epoch," in the current issue of Nature.

In the study the team also looked at how nitrogen availability changed thousands of years ago.

Roughly 15,000 years ago, the Earth began to warm, melting many glaciers and ice sheets that covered the landscape. Researchers found that Earth experienced an 8,000-year long decline in nitrogen availability as temperatures rose and carbon and nitrogen became locked up in soils. According to researchers, how the nitrogen cycle responded to these ancient global changes in carbon dioxide could be a glimpse into the future.

"What happened in the past might be a dry run for Earth's future," Craine said. "By looking at what happened millennia ago, we can see what controlled and prevented changes in nitrogen availability. This helps us understand and predict how things will change in the future."

The team collected and analyzed data from the sediment records of 86 lakes scattered across six continents. The lakes were distributed between tropical and temperate zones. With the data, the team was able to compare past and present cycling in various regions.

Researchers found that once most of the glaciers and ice sheets had melted around 11,000 years ago, the Earth continued to experience a global decline in nitrogen that lasted another 4,000 years.

"That was one of the really surprising findings," Craine said. "As the world was getting warmer and experiencing higher carbon dioxide levels than it had in the past, just like we are currently experiencing, the ecosystems were starting to lock carbon in the soils and in plants, also like we are seeing today. That created a long decline in nitrogen availability, and it scrubbed nitrogen out of the atmosphere."

McLauchlan said the most surprising finding, however, was that although humans have nearly doubled the amount of nitrogen to the ecosystems, globally nitrogen levels have remained stable at most sites for the past 500 years.

One reason may be that plants are using more nitrogen than they previously have, keeping nitrogen levels consistent with those thousands of years ago even though humans continue to add carbon dioxide and nitrogen to the atmosphere, McLauchlan said.

"Our best idea is that the nitrogen and carbon cycles were linked tightly back then and they are linked tightly today," McLauchlan said. "Humans are now manipulating both nitrogen and carbon at the same time, which means that there is no net effect on the biosphere."

The balance may be only temporary, McLauchlan said.

"Based on what we learned from the past, if the response of plants to elevated carbon dioxide slows, nitrogen availability is likely to increase and ecosystems will begin to change profoundly," McLauchlan said. "Now more than ever, it's important to begin monitoring our grasslands and forests for early warning signs."

###

Kansas State University: http://www.k-state.edu

Thanks to Kansas State University for this article.

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Source: http://www.labspaces.net/127403/Global_nitrogen_availability_consistent_for_past_____years__linked_to_carbon_levels

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'Spring Breakers' Girls Fight Over Britney Spears Lyrics

'I love Britney, but you really, really, really love Britney,' Ashley Benson said of Selena Gomez.
By Jocelyn Vena


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Photo: MTV News

Source: http://www.mtv.com/news/articles/1704189/spring-breakers-selena-gomez-britney-spears-lyrics.jhtml

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