Tuesday, June 11, 2013

From the Editor's Discotheque: Thanks for coming out, y'all!

Talk Mobile launch party

Holy crap, that picture is going to get annoying after a couple seconds. But I don't care. It sums up Thursday night's Talk Mobile 2013 Launch Party pretty succinctly. (And it's a great example of the Google+ "Auto Awesome" animated gif feature.)

A good 600 or so of our closest smartphone friends, from all platforms and all walks of life, at a little club off Times Square. An official recap video is in the works, I hear, but some quick thoughts for now:

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Source: http://feedproxy.google.com/~r/androidcentral/~3/41N08FfCJVQ/story01.htm

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The App Store Gold Rush Has Only Just Begun

gold-iPad1The app ecosystem is showing no signs of slowing down. That’s what Apple essentially announced today, revealing that there are now 900,000 iOS applications?available for the iPhone, iPad, and iPod touch. Though the app stores are getting filled up and shifting more of the revenue to top publishers, the market itself is not decreasing as a result. The company added 250,000 more iOS applications to its App Store from 2012 to 2013, in between its annual WWDC announcements. The year before, it had added 225,000 applications (between 2011 and 2012), and before that, some 200,000 new apps?came on board. That’s incredible growth, actually, because you would almost think that App Store growth would have been the other way around – that there would have been an initial gold rush as developers filled its virtual shelves with new apps, then growth would have slowed over the years as all the “good ideas” were taken, so to speak. Even now, it’s harder than ever for indie developers to really make it on the App Store, but that doesn’t seem to be impacting the number of new apps available. And while it’s true that some are just now starting to shift their focus to Android and Google Play (which is starting to see a few success stories of its own), it appears that shift has not come at the expense of Apple’s iOS. The App Store gold rush is clearly still in its early days yet.

Source: http://feedproxy.google.com/~r/Techcrunch/~3/dS7F1gNLEhY/

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Monday, June 10, 2013

Testing artificial photosynthesis

Testing artificial photosynthesis [ Back to EurekAlert! ] Public release date: 10-Jun-2013
[ | E-mail | Share Share ]

Contact: Lynn Yarris
lcyarris@lbl.gov
510-486-5375
DOE/Lawrence Berkeley National Laboratory

Berkeley Lab researchers develop fully integrated microfluidic test-bed for solar-driven electrochemical energy conversion systems

With the daily mean concentrations of atmospheric carbon dioxide having reached 400 parts-per-million for the first time in human history, the need for carbon-neutral alternatives to fossil fuel energy has never been more compelling. With enough energy in one hour's worth of global sunlight to meet all human needs for a year, solar technologies are an ideal solution. However, a major challenge is to develop efficient ways to convert solar energy into electrochemical energy on a massive-scale. A key to meeting this challenge may lie in the ability to test such energy conversion schemes on the micro-scale.

Berkeley Lab researchers, working at the Joint Center for Artificial Photosynthesis (JCAP), have developed the first fully integrated microfluidic test-bed for evaluating and optimizing solar-driven electrochemical energy conversion systems. This test-bed system has already been used to study schemes for photovoltaic electrolysis of water, and can be readily adapted to study proposed artificial photosynthesis and fuel cell technologies.

"We've demonstrated a microfluidic electrolyzer for water splitting in which all functional components can be easily exchanged and tailored for optimization," says Joel Ager, a staff scientist with Berkeley Lab's Materials Sciences Division. "This allows us to test on a small scale strategies that can be applied to large scale systems."

Ager is one of two corresponding authors of a paper in the journal Physical Chemistry Chemical Physics (PCCP) titled "Integrated microfluidic test-bed for energy conversion devices." Rachel Segalman, also with Berkeley Lab's Materials Sciences Division is the other corresponding author. Other co-authors are Miguel Modestino, Camilo Diaz-Botia, Sophia Haussener and Rafael Gomez-Sjoberg.

For more than two billion years, nature has employed photosynthesis to oxidize water into molecular oxygen. An artificial version of photosynthesis is regarded as one of the most promising of solar technologies. JCAP is a multi-institutional partnership led by the California Institute of Technology (Caltech) and Berkeley Lab with operations in Berkeley (JCAP-North) and Pasadena (JCAP-South). The JCAP mission is to develop an artificial version of photosynthesis through specialized membranes made from nano-engineered materials that can do what nature does only much more efficiently and for the purpose of producing storable fuels such as hydrogen or hydrocarbons (gasoline, diesel, etc.).

"The operating principles of artificial photosynthetic systems are similar to redox flow batteries and fuel cells in that charge-carriers need to be transported to electrodes, reactants need to be fed to catalytic centers, products need to be extracted, and ionic transport both from the electrolyte to catalytic centers and across channels needs to occur," Ager says. "While there have been a number of artificial photosynthesis demonstrations that have achieved attractive solar to hydrogen conversion efficiencies, relatively few have included all of the operating principles, especially the chemical isolation of the cathode and anode."

The microfluidic test-bed developed by Ager and his colleagues at JCAP-N allows for different anode and cathode materials to be integrated and electrically accessed independently through macroscopic contacts patterned in the outside of the microfabricated chip. The transport of charge-carriers occurs through an ion conducting polymer membrane, and electrolysis products can be evolved and collected in separated streams. This general design provides selective catalysis at the cathode and anode, minimization of cross-over losses, and managed transport of the reactants. Virtually any photoelectrochemical component, including those made of earth-abundant elements, can be incorporated into the test-bed.

Says Modestino, the lead author of the PCCP paper, "In our experimental realization of the design, a series of 19 parallel channels were fabricated in each device, with a total active area of eight square millimeters. As the microfabricated chips are relatively easy to make, we can readily change dimensions and materials to optimize performance."

###

This research was supported by the DOE Office of Science.

Lawrence Berkeley National Laboratory addresses the world's most urgent scientific challenges by advancing sustainable energy, protecting human health, creating new materials, and revealing the origin and fate of the universe. Founded in 1931, Berkeley Lab's scientific expertise has been recognized with 13 Nobel prizes. The University of California manages Berkeley Lab for the U.S. Department of Energy's Office of Science. For more, visit http://www.lbl.gov.

DOE's Office of Science is the single largest supporter of basic research in the physical sciences in the United States, and is working to address some of the most pressing challenges of our time. For more information, please visit the Office of Science website at science.energy.gov/.


[ Back to EurekAlert! ] [ | E-mail | Share Share ]

?


AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert! system.


Testing artificial photosynthesis [ Back to EurekAlert! ] Public release date: 10-Jun-2013
[ | E-mail | Share Share ]

Contact: Lynn Yarris
lcyarris@lbl.gov
510-486-5375
DOE/Lawrence Berkeley National Laboratory

Berkeley Lab researchers develop fully integrated microfluidic test-bed for solar-driven electrochemical energy conversion systems

With the daily mean concentrations of atmospheric carbon dioxide having reached 400 parts-per-million for the first time in human history, the need for carbon-neutral alternatives to fossil fuel energy has never been more compelling. With enough energy in one hour's worth of global sunlight to meet all human needs for a year, solar technologies are an ideal solution. However, a major challenge is to develop efficient ways to convert solar energy into electrochemical energy on a massive-scale. A key to meeting this challenge may lie in the ability to test such energy conversion schemes on the micro-scale.

Berkeley Lab researchers, working at the Joint Center for Artificial Photosynthesis (JCAP), have developed the first fully integrated microfluidic test-bed for evaluating and optimizing solar-driven electrochemical energy conversion systems. This test-bed system has already been used to study schemes for photovoltaic electrolysis of water, and can be readily adapted to study proposed artificial photosynthesis and fuel cell technologies.

"We've demonstrated a microfluidic electrolyzer for water splitting in which all functional components can be easily exchanged and tailored for optimization," says Joel Ager, a staff scientist with Berkeley Lab's Materials Sciences Division. "This allows us to test on a small scale strategies that can be applied to large scale systems."

Ager is one of two corresponding authors of a paper in the journal Physical Chemistry Chemical Physics (PCCP) titled "Integrated microfluidic test-bed for energy conversion devices." Rachel Segalman, also with Berkeley Lab's Materials Sciences Division is the other corresponding author. Other co-authors are Miguel Modestino, Camilo Diaz-Botia, Sophia Haussener and Rafael Gomez-Sjoberg.

For more than two billion years, nature has employed photosynthesis to oxidize water into molecular oxygen. An artificial version of photosynthesis is regarded as one of the most promising of solar technologies. JCAP is a multi-institutional partnership led by the California Institute of Technology (Caltech) and Berkeley Lab with operations in Berkeley (JCAP-North) and Pasadena (JCAP-South). The JCAP mission is to develop an artificial version of photosynthesis through specialized membranes made from nano-engineered materials that can do what nature does only much more efficiently and for the purpose of producing storable fuels such as hydrogen or hydrocarbons (gasoline, diesel, etc.).

"The operating principles of artificial photosynthetic systems are similar to redox flow batteries and fuel cells in that charge-carriers need to be transported to electrodes, reactants need to be fed to catalytic centers, products need to be extracted, and ionic transport both from the electrolyte to catalytic centers and across channels needs to occur," Ager says. "While there have been a number of artificial photosynthesis demonstrations that have achieved attractive solar to hydrogen conversion efficiencies, relatively few have included all of the operating principles, especially the chemical isolation of the cathode and anode."

The microfluidic test-bed developed by Ager and his colleagues at JCAP-N allows for different anode and cathode materials to be integrated and electrically accessed independently through macroscopic contacts patterned in the outside of the microfabricated chip. The transport of charge-carriers occurs through an ion conducting polymer membrane, and electrolysis products can be evolved and collected in separated streams. This general design provides selective catalysis at the cathode and anode, minimization of cross-over losses, and managed transport of the reactants. Virtually any photoelectrochemical component, including those made of earth-abundant elements, can be incorporated into the test-bed.

Says Modestino, the lead author of the PCCP paper, "In our experimental realization of the design, a series of 19 parallel channels were fabricated in each device, with a total active area of eight square millimeters. As the microfabricated chips are relatively easy to make, we can readily change dimensions and materials to optimize performance."

###

This research was supported by the DOE Office of Science.

Lawrence Berkeley National Laboratory addresses the world's most urgent scientific challenges by advancing sustainable energy, protecting human health, creating new materials, and revealing the origin and fate of the universe. Founded in 1931, Berkeley Lab's scientific expertise has been recognized with 13 Nobel prizes. The University of California manages Berkeley Lab for the U.S. Department of Energy's Office of Science. For more, visit http://www.lbl.gov.

DOE's Office of Science is the single largest supporter of basic research in the physical sciences in the United States, and is working to address some of the most pressing challenges of our time. For more information, please visit the Office of Science website at science.energy.gov/.


[ Back to EurekAlert! ] [ | E-mail | Share Share ]

?


AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert! system.


Source: http://www.eurekalert.org/pub_releases/2013-06/dbnl-tap061013.php

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Sunday, June 9, 2013

Stocks rise on hiring jump

Stocks jumped Friday on news of steady growth in hiring last month.?Expectation of continued economic stimulus from the Federal Reserve also pushed stocks upward.?

By Steve Rothwell,?AP Markets Writer / June 7, 2013

Traders work on the floor at the New York Stock Exchange, Friday. Stocks rose strongly in the morning Friday, then eased slightly in the early afternoon. The gains accelerated in the final hour of trading.

Brendan McDermid/Reuters

Enlarge

Steady growth in hiring last month sent the?stock?market sharply higher Friday.

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U.S. employers added 175,000 jobs in May, slightly more than the 170,000 forecast by economists, according to data provider FactSet. More Americans also began looking for work, another encouraging sign.

The report gave a boost to?stock?market bulls, who expect the Fed to keep up its stimulus program as the U.S. economy continues to recover moderately. That combination pushed the Dow Jones industrial average and the Standard & Poor's 500 index to record highs last month.

The Dow Jones Industrial average had its best day in five months. It rose 207 points, or 1.4 percent, to close at 15,248.12. That gain was surpassed this year only by its 2.4 percent rise Jan. 2.

The Standard & Poor's 500 index rose 20.82 points, or 1.3 percent, to 1,643.38. The Nasdaq composite rose 45.16 points, or 1.3 percent, to 3,469.22.

Federal Reserve policy makers are now all but certain to refrain from easing back on their stimulus program at the next two-day policy meeting, which starts June 18, said Phil Orlando, chief equity strategist at Federated Investors.

"This was, in our view, very much a 'Goldilocks' number," said Orlando. "There is zero chance that the Federal Reserve is going to start tapering monetary policy."

The central bank is buying $85 billion of bond every month to keep interest rates low and encourage borrowing and spending. Low interest rates also keep bond prices high and push up demand for riskier assets like?stocks.

Stocks?rose strongly in the morning, then eased slightly in the early afternoon. The gains accelerated in the final hour of trading.

Boeing led the index higher with a gain of $2.73, or 2.7 percent, to $102.49. Industrial conglomerate 3M gained $2.44, or 2.2 percent, to $111.11. Twenty-six of the 30?stocks?in the Dow rose.

Nine of the 10 industry groups in the S&P 500 index rose, led by consumer discretionarystocks, which stand to benefit more than other sectors if the economy picks up. Industrial companies and banks also posted strong gains.

The only S&P 500 industry group that fell was telecommunications, a so-called defensive sector that investors favor when they are seeking safety and high dividends.

Stocks?slumped on Tuesday and Wednesday after disappointing reports on private-sector hiring and manufacturing. The S&P 500 index lost 1.9 percent over those two days. Friday's gain erased the S&P's loss for the week. The S&P gained 0.8 percent since last Friday.

Financial markets have turned volatile over the past two weeks as traders parse comments from Fed officials for hints about when the central bank will cut back on its support. When it happens, the wind-down will help nudge interest rates higher.

For investors who expect the Fed to stay the course, "these types of slow economic growth reports speak to that," said Kevin Mahn, chief investment officer at Hennion & Walsh Asset Management. "It keeps interest rates at record lows and it keeps the equity markets humming."

Source: http://rss.csmonitor.com/~r/feeds/csm/~3/9j8psxxIMPE/Stocks-rise-on-hiring-jump

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South Africa: Family visits ailing Nelson Mandela

JOHANNESBURG (AP) ? Nelson Mandela received visits from family members on Sunday at a hospital where the former president and anti-apartheid leader was being treated for a recurring lung infection, while South Africans expressed their appreciation for a man widely regarded as the father of the nation.

There was no official update on 94-year-old Mandela after his second night in the hospital. His condition was described as "serious but stable" on Saturday.

The office of President Jacob Zuma had said that Mandela was taken to a Pretoria hospital after his condition deteriorated at around 1:30 a.m. on Saturday.

The anti-apartheid leader has now been taken to a hospital four times since December, with the last discharge coming on April 6 after doctors diagnosed him with pneumonia and drained fluid from his lung area.

Members of Mandela's family on Sunday were seen visiting the Pretoria hospital where he is believed to be staying. They included Makaziwe Mandela, the eldest of the ex-leader's three surviving children, and Ndileka Mandela, one of his 17 grandchildren.

Worshippers at a Sunday church service in the Johannesburg township of Soweto prayed for the recovery of Mandela, who was freed in 1990 after 27 years as a prisoner of white racist rule and won election to the presidency in all-race elections in 1994. He retired from public life years ago and had received medical care at his Johannesburg home until his latest transfer to a hospital.

At the Regina Mundi church in Soweto, Father Sebastian Rousso said Mandela, seen by many as a symbol of reconciliation for his peacemaking efforts, played a key role "not only for ourselves as South Africans, but for the world."

There is a stained glass image of Mandela with arms raised in the Catholic church, a center of protests and funeral services for activists during the apartheid years.

"We still need him in our lives because he did so much for us," said Mantsho Moralo, a receptionist who was in the congregation. Siyabonga Nyembe, a student, described Mandela as a "pillar of strength" for South Africans.

A stream of tourists visited Mandela's former home, now a museum, on Vilakazi Street in Soweto. Visitors and vendors wished a quick recovery for the man whose sacrifices in the fight against apartheid made their lives better, even if South Africa today is struggling today with high unemployment and other severe challenges.

"He's like one in a million. I don't think we're ever going to get a leader like him. We're living the life that we have because of him and for that we wish him well," said Seponono Kekana, who toured the brick, one-storey house.

On April 29, state television broadcast footage of a visit by Zuma and other leaders of the ruling African National Congress to Mandela's home. Zuma said at the time that Mandela was in good shape, but the footage - the first public images of Mandela in nearly a year - showed him silent and unresponsive, even when Zuma tried to hold his hand.

The Nobel Peace Prize laureate has been particularly vulnerable to respiratory problems since contracting tuberculosis during his long imprisonment. The bulk of that period was spent on Robben Island, an outpost off the coast of Cape Town where Mandela and other prisoners spent part of the time toiling in a stone quarry.

The Sunday Times, a South African newspaper, quoted Andrew Mlangeni, an old friend of Mandela, as saying he wished the former president would get better but noted his infirmity had become a drawn-out process. He said Mandela had been taken to the hospital "too many times" and that there was a possibility he would not be well again.

"The family must release him so that God may have his own way. They must release him spiritually and put their faith in the hands of God," said Mlangeni, a co-defendant of Mandela in the 1960s trial on sabotage charges that led to a sentence of life imprisonment for them and other anti-apartheid leaders.

"Once the family releases him, the people of South Africa will follow. We will say thank you, God, you have given us this man, and we will release him too," Mlangeni told the newspaper.

Nhlanhla Ngcobobo, a street vendor who works a few steps from the Mandela Family Restaurant next to the former leader's old home, said the ailing Mandela was a kind of psychological anchor for his compatriots. South Africa has held peaceful elections since 1994 and remains an economic powerhouse on the continent, but many worry that the sense of promise that Mandela represented in the early years of democracy is in peril.

"There's a lot of corruption and when Mandela dies, people will start feeling they can do what they like and corruption will be worse than it is," Ngcobobo said. "By him being alive, there's a lot more order."

---

Associated Press writer Wandoo Makurdi in Johannesburg contributed to this report.

Source: http://news.yahoo.com/south-africa-family-visits-nelson-mandela-142009627.html

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Will cyber spying make U.S.-China summit awkward? (CNN)

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