Saturday, December 22, 2012

Study: Squeezing Breasts Can Help Fight Breast Cancer ? CBS ...

File photo of a woman getting a mammogram. (credit: D. Clarke Evans/NBAE via Getty Images)

File photo of a woman getting a mammogram. (credit: D. Clarke Evans/NBAE via Getty Images)

ATLANTA (CBS Atlanta) ? Can squeezing one?s breasts help fight cancer?

New research has found that applying physical force on one?s breasts can prevent malignant cancer cells.

Researchers at the University of California Berkeley and the Lawrence Berkeley National Laboratory presented their findings Monday at the Society for Cell Biology in San Francisco.

?People have known for centuries that physical force can influence our bodies,? research team member Gautham Venugopalan said in a statement. ?When we lift weights, our muscles get bigger. The force of gravity is essential to keeping our bones strong. Here we show that physical force can play a role in the growth ? and reversion ? of cancer cells.?

Squeezing breasts can help guide cells back into a normal growth pattern, stopping the ?out-of-control? growth of malignant cancer cells.

?We are showing that tissue organization is sensitive to mechanical inputs from the environment at the beginning stages of growth and development,? principal investigator Daniel Fletcher, professor of bioengineering at Berkeley and faculty scientist at the Berkeley Lab, said in a statement. ?An early signal, in the form of compression, appears to get these malignant cells back on the right track.?

To conduct the study, researchers grew malignant breast epithelial cells that were injected into silicone chambers. Once injected inside the flexible chambers, researchers began to apply physical force in the first stages of cell development.

Researchers noticed that the malignant cells that were compressed became healthier and more organized compared to the cells that were not. The compressed malignant cells stopped growing when the new breast tissue structure was formed, even after physical force was stopped.

?Malignant cells have not completely forgotten how to be healthy; they just need the right cues to guide them back into a healthy growth pattern,? Venugopalan said.

Despite the findings, researchers warn that this won?t cure breast cancer.

?Compression, in and of itself, is not likely to be a therapy,? Fletcher said. ?But this does give us new clues to track down the molecules and structures that could eventually be targeted for therapies.?

The Centers for Disease Control and Prevention says breast cancer is the most common cancer among women in the U.S. Over 40,000 women died from breast cancer in 2008.

Source: http://atlanta.cbslocal.com/2012/12/20/study-squeezing-breasts-can-help-fight-breast-cancer/

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Friday, December 21, 2012

Roku rounds out its media arsenal with new Spotify and Vevo channels

DNP  Roku rounds out its media arsenal with new Spotify and Vevo apps

Roku's music cred increased twofold today. First up was news that a Vevo channel is coming to the set-top box, bringing video and music streaming along with its recommendations service. Users will be able to sync their Vevo accounts to access saved videos and playlists. The (extra-sweet) cherry on top: Spotify will be coming to Roku 2 players as well as the Roku Streaming Stick for users in the US, UK and Ireland, with support for the Roku LT and the new Roku HD coming in early 2013. Not enough new goodies for you? Roku's Android and iOS apps just received some minor yet nifty updates, including new controls (such as shuffle and repeat) for music in the Play on Roku feature.

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Source: Roku Blog, Vevo News, iTunes

Source: http://www.engadget.com/2012/12/20/roku-new-spotify-vevo-channels/

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Friday, December 14, 2012

Cassini spots mini Nile River on Saturn's moon Titan

Dec. 12, 2012 ? Scientists with NASA's Cassini mission have spotted what appears to be a miniature, extraterrestrial likeness of Earth's Nile River: a river valley on Saturn's moon Titan that stretches more than 200 miles (400 kilometers) from its "headwaters" to a large sea. It is the first time images have revealed a river system this vast and in such high resolution anywhere other than Earth.

Scientists deduce that the river, which is in Titan's north polar region, is filled with liquid hydrocarbons because it appears dark along its entire length in the high-resolution radar image, indicating a smooth surface.

"Though there are some short, local meanders, the relative straightness of the river valley suggests it follows the trace of at least one fault, similar to other large rivers running into the southern margin of this same Titan sea," said Jani Radebaugh, a Cassini radar team associate at Brigham Young University, Provo, Utah. "Such faults -- fractures in Titan's bedrock -- may not imply plate tectonics, like on Earth, but still lead to the opening of basins and perhaps to the formation of the giant seas themselves."

The new image is available online at: http://www.nasa.gov/mission_pages/cassini/multimedia/pia16197.html .

Titan is the only other world we know of that has stable liquid on its surface. While Earth's hydrologic cycle relies on water, Titan's equivalent cycle involves hydrocarbons such as ethane and methane. In Titan's equatorial regions, images from Cassini's visible-light cameras in late 2010 revealed regions that darkened due to recent rainfall. Cassini's visual and infrared mapping spectrometer confirmed liquid ethane at a lake in Titan's southern hemisphere known as Ontario Lacus in 2008.

"Titan is the only place we've found besides Earth that has a liquid in continuous movement on its surface," said Steve Wall, the radar deputy team lead, based at NASA's Jet Propulsion Laboratory, Pasadena, Calif. "This picture gives us a snapshot of a world in motion. Rain falls, and rivers move that rain to lakes and seas, where evaporation starts the cycle all over again. On Earth, the liquid is water; on Titan, it's methane; but on both it affects most everything that happens."

The radar image here was taken on Sept. 26, 2012. It shows Titan's north polar region, where the river valley flows into Kraken Mare, a sea that is, in terms of size, between the Caspian Sea and the Mediterranean Sea on Earth. The real Nile River stretches about 4,100 miles (6,700 kilometers). The processes that led to the formation of Earth's Nile are complex, but involve faulting in some regions.

The Cassini-Huygens mission is a cooperative project of NASA, the European Space Agency and ASI, the Italian Space Agency. NASA's Jet Propulsion Laboratory, a division of the California Institute of Technology in Pasadena, manages the mission for NASA's Science Mission Directorate, Washington. The Cassini orbiter was designed, developed and assembled at JPL. The radar instrument was built by JPL and the Italian Space Agency, working with team members from the US and several European countries. JPL is a division of the California Institute of Technology in Pasadena.

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Source: http://feeds.sciencedaily.com/~r/sciencedaily/top_news/top_science/~3/n0Qo40m5dLQ/121212164028.htm

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Tuesday, December 11, 2012

International Tests Show East Asian Students Outperform World As ...

The U.S. performed above average on international standardized tests in elementary and middle school math, science and reading, according to reports released Tuesday. But experts said the rankings, along with similar exams that test students at later ages, show a fundamental problem in America's education system: students tend to perform worse as they age.

"When we start looking at our older students, we see less improvement over time," said Jack Buckley, who leads the U.S. Education Department's National Center for Education Statistics. That trend holds true across several exams.

The International Association for the Evaluation of Educational Achievement's PIRLS and TIMSS 2011 exams, released Tuesday, measure reading in fourth grade, and math and reading at fourth grade and eighth grade respectively. Across the board, East Asian countries occupied the upper ranks in the comparison of more than 60 world education systems, far outperforming the U.S.. Because the tests measure different groups of students from year to year, the results are best used as snapshots of performance relative to other countries at one point in time. Overall, the U.S. ranked sixth in fourth-grade reading, ninth in fourth-grade math, 12th in eighth-grade math, seventh in fourth-grade science and 13th in eighth-grade science.

U.S. Secretary of Education Arne Duncan called the U.S. scores encouraging, but described older students' performance as "unacceptable."

"These new international comparisons underscore the urgency of accelerating achievement in secondary school and the need to close large and persistent achievement gaps," Duncan said. "Learning gains in fourth grade are not being sustained in eighth grade, where mathematics and science achievement failed to measurably improve." He said he was particularly troubled by the stagnation in eighth grade science.

In reading, American fourth graders scored 556, above the international average. The U.S. ranked sixth in reading, with five education systems -- including Florida -- performing better. The U.S. was one of only six countries to increase at all four tested benchmarks over 10 years.

In fourth grade math, the U.S. scored 541 -- higher than the international average of 500. That was 23 points more than the U.S. score in 1995, and 12 points higher than in 2007. Eight education systems -- including Singapore, Korea, Hong Kong, Chinese Taipei, Japan, Northern Ireland, Flemish Belgium and the U.S. state of North Carolina -- had significantly higher scores at that level.

In eighth grade math, the U.S. performed only nine points above the international average, netting a 509, and was outperformed by 11 education systems. But the gap between the tier of top-performing countries like Korea and Singapore over the U.S. was more than 100 points. The 2011 score for U.S. students was 17 points higher than in 1995, and no higher than in 2007.

American fourth graders on average scored 544 in science, higher than the international average of 500, ranking in the top 10 of all participating systems. Six nations, including Korea, Singapore and Finland, had higher averages. U.S. fourth graders in 2011 performed no higher than fourth graders in 1995 and 2007.

In eighth grade, U.S. average science scores came in at 525, higher than the international average of 500. Twelve systems, including Singapore, Chinese Taipei and the state of Massachusetts, scored higher. The 2011 U.S. score represents an increase of 12 points since 1995, and no increase since 2007.

The scores come after much hand-wringing on the part of the school reform movement, which has used international rankings to claim that America's school system needs a serious overhaul if it wants future generations to compete in a global economy. Over the summer, StudentsFirst, the group run by former Washington, D.C., schools chancellor Michelle Rhee, raised eyebrows with Olympics-themed advertisements that portrayed U.S. students as flabby, failed educational Olympians that don't measure up. The ads based that portrayal on America's rankings on the PISA, another international exam that tests students at age 15, whose most recent administration found that out of 34 countries, the U.S. ranked 14th in reading, 17th in science and 25th in math.

The TIMSS results are more favorable. "We feel positive about the results of the United States," said Ina V.S. Mullis, executive director of the TIMSS & PIRLS International Study Center at Boston College. "It looks like we've been making steady progress since 1995. We've been increasing results for all students, which is pretty difficult."

But America's poorest students aren't doing as well. "Our most impoverished students lose ground," said Claus von Zastrow, the chief operating officer Change the Equation, a Washington-based group that advocates for math and science education. "They were holding even with the international average in some grade levels, fourth grade, but in eighth grade, they've dropped below. It means they're getting less competitive as they're going through the school system and that's a tragic story."

That story might explain some of the dramatic differences between America's performance on TIMSS and PISA. "My interpretation is it's really sort of success in the early years, but less value gets added as students grow older," Andreas Schleicher, who administers the PISA exam for the Organisation for Economic Co-operation and Development, told The Huffington Post. "Every year of schooling adds less value."

It's unclear why that may be. Schleicher hypothesized that some strategies the U.S. has for education, such as "a prescriptive program of teaching," work better in earlier grades. "As you move to later years of schooling, you require more student engagement," he said. As a counter-example, he pointed to Finland, whose students do not fare quite as well in the earlier years as they do in high school. The backwards learning curve in the U.S., he said, matters because "the earnings gap between the lower-skilled and the better-skilled is widening."

The reports also looked at the context of these scores, and found high correlations between students in homes that play math and reading games with advanced fourth grade achievement. It also found that students who report being bullied score lower, and reaffirmed that students from poorer backgrounds do not perform as well as peers.

Also on HuffPost:

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Source: http://www.huffingtonpost.com/2012/12/11/international-tests-show-_n_2273134.html

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Saturday, December 8, 2012

The military has updated its plans for a potential strike against Syria after in...

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Chat LIVE with UFC: Ultimate Fighting Championship President Dana White & specia...

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Western Digital offers 8TB version of its My Book Live Duo NAS

Western Digital offers 8TB version of its My Book Live Duo NAS

Western Digital is mightily proud of its new 4TB hard drives, so it shouldn't be a surprise to see them winding up in the company's range of external storage products. The latest to get the spec bump is the My Book Live Duo, the dual-drive RAID box that promises to keep your memories safe should the worst happen. The range-topping 8TB edition will set you back $660, but if your credit card isn't that elastic, you can snag a 6TB unit for $440 and a 4TB box for $375.

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Via: CNET

Source: Western Digital

Source: http://feeds.engadget.com/~r/weblogsinc/engadget/~3/A22yuWIS5PI/

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