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Wednesday, April 17, 2013
Your Web Cam Can See Your Heart Rate, Which Isn't Creepy At All
Tuesday, April 16, 2013
Small in size, big on power: New microbatteries the most powerful yet
Apr. 16, 2013 ? Though they be but little, they are fierce. The most powerful batteries on the planet are only a few millimeters in size, yet they pack such a punch that a driver could use a cellphone powered by these batteries to jump-start a dead car battery -- and then recharge the phone in the blink of an eye.?
Developed by researchers at the University of Illinois at Urbana-Champaign, the new microbatteries out-power even the best supercapacitors and could drive new applications in radio communications and compact electronics.
Led by William P. King, the Bliss Professor of mechanical science and engineering, the researchers published their results in the April 16 issue of Nature Communications.
"This is a whole new way to think about batteries," King said. "A battery can deliver far more power than anybody ever thought. In recent decades, electronics have gotten small. The thinking parts of computers have gotten small. And the battery has lagged far behind. This is a microtechnology that could change all of that. Now the power source is as high-performance as the rest of it."
With currently available power sources, users have had to choose between power and energy. For applications that need a lot of power, like broadcasting a radio signal over a long distance, capacitors can release energy very quickly but can only store a small amount. For applications that need a lot of energy, like playing a radio for a long time, fuel cells and batteries can hold a lot of energy but release it or recharge slowly.
"There's a sacrifice," said James Pikul, a graduate student and first author of the paper. "If you want high energy you can't get high power; if you want high power it's very difficult to get high energy. But for very interesting applications, especially modern applications, you really need both. That's what our batteries are starting to do. We're really pushing into an area in the energy storage design space that is not currently available with technologies today."
The new microbatteries offer both power and energy, and by tweaking the structure a bit, the researchers can tune them over a wide range on the power-versus-energy scale.
The batteries owe their high performance to their internal three-dimensional microstructure. Batteries have two key components: the anode (minus side) and cathode (plus side). Building on a novel fast-charging cathode design by materials science and engineering professor Paul Braun's group, King and Pikul developed a matching anode and then developed a new way to integrate the two components at the microscale to make a complete battery with superior performance.
With so much power, the batteries could enable sensors or radio signals that broadcast 30 times farther, or devices 30 times smaller. The batteries are rechargeable and can charge 1,000 times faster than competing technologies -- imagine juicing up a credit-card-thin phone in less than a second. In addition to consumer electronics, medical devices, lasers, sensors and other applications could see leaps forward in technology with such power sources available.
"Any kind of electronic device is limited by the size of the battery -- until now," King said. "Consider personal medical devices and implants, where the battery is an enormous brick, and it's connected to itty-bitty electronics and tiny wires. Now the battery is also tiny."
Now, the researchers are working on integrating their batteries with other electronics components, as well as manufacturability at low cost.
"Now we can think outside of the box," Pikul said. "It's a new enabling technology. It's not a progressive improvement over previous technologies; it breaks the normal paradigms of energy sources. It's allowing us to do different, new things."
The National Science Foundation and the Air Force Office of Scientific Research supported this work. King also is affiliated with the Beckman Institute for Advanced Science and Technology; the Frederick Seitz Materials Research Laboratory; the Micro and Nanotechnology Laboratory; and the department of electrical and computer engineering at the U. of I.
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The above story is reprinted from materials provided by University of Illinois at Urbana-Champaign.
Note: Materials may be edited for content and length. For further information, please contact the source cited above.
Journal Reference:
- James H. Pikul, Hui Gang Zhang, Jiung Cho, Paul V. Braun, William P. King. High-power lithium ion microbatteries from interdigitated three-dimensional bicontinuous nanoporous electrodes. Nature Communications, 2013; 4: 1732 DOI: 10.1038/ncomms2747
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.
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Jordan extremist praises Boston bombing
AMMAN, Jordan (AP) ? The head of an extremist Jordanian Muslim Salafi group said early Tuesday that he was "happy to see the horror in America" after the explosions in Boston.
"American blood isn't more precious than Muslim blood," said Mohammad al-Chalabi, who was convicted in an al-Qaida-linked plot to attack U.S. and other Western diplomatic missions in Jordan in 2003.
"Let the Americans feel the pain we endured by their armies occupying Iraq and Afghanistan and killing our people there," he said early Tuesday.
Al-Chalabi served seven years in prison for his part in the foiled attack. His group is outlawed in Jordan.
A Mideast counterterrorism official based in Jordan said the blasts "carry the hallmark of an organized terrorist group, like al-Qaida." He did not give actual evidence linking al-Qaida to the bombing.
"From the little information available, one can say it was a well-coordinated, well-targeted and near-simultaneous attack," he said. "Luckily, the amount of explosives used is small, judging from the casualty figure and explosion area."
A Jordanian security official said security was beefed up around the U.S. Embassy in Amman after the bombing in Boston.
"As the unfortunate news unfolded, we immediately stationed more police patrols around the embassy," he said. He declined to disclose any details, citing the sensitive nature of the information.
Both officials insisted on anonymity, as they were not authorized to brief reporters on security matters.
Source: http://news.yahoo.com/jordan-extremist-praises-boston-bombing-221640635.html
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Nuggets set NBA franchise mark with 55th win
DENVER (AP) ? The Denver Nuggets are getting good at bittersweet moments.
Andre Iguodala scored 28 points and the Nuggets set an NBA franchise record with their 55th win Sunday, beating the short-handed Portland Trail Blazers 118-109 but losing another starter.
On the day Ty Lawson (right heel) returned to Denver's starting lineup for the first time since March 27 and played an encouraging 31 minutes, forward Kenneth Faried sprained his left ankle in the opening minutes while driving for a layup and didn't return.
"We're dropping like flies, man," Lawson said. "Well, it's not too serious, I heard, so he might be out for a week or so. He's a tough guy."
Although Faried wasn't around afterward to speak, Iguodala also suggested the Nuggets had dodged a serious blow, saying, "the good thing is it wasn't as bad as he thought it might be, so I'm sure he'll be ready to go when we need him."
Although X-rays were negative, coach George Karl stressed that he didn't want to guess about Faried's availability for the playoffs that start next weekend until after his top rebounder goes for an MRI on Monday.
Faried crumpled to the floor, covering his face and holding his left ankle as the Nuggets called a timeout less than three minutes into the game. The Pepsi Center crowd grew quiet ? the way it had 10 days earlier when forward Danilo Gallinari blew out his left ACL driving to the same hoop against Dallas.
In an all-too-familiar sight, Quincy Miller and Anthony Randolph helped their teammate as he gingerly walked off the court, a towel covering his face. Randolph would get some of Faried's minutes and finish with 18 points.
Faried was averaging 11.7 points and a team-best 9.3 rebounds.
"I felt like we were snakebit or bad luck had come our way, our karma had turned the wrong way," Karl said. "I kind of saw it and then when he stayed down, I was worried. I don't think anything's broken. But we'll find out much more tomorrow."
As they did when Gallinari went down, the Nuggets rallied behind their latest fallen starter, and grabbed a piece of history with their 55th win.
The Nuggets, who went 54-28 in both 1987-88 and 2008-09, also extended their franchise-best winning streak at home to 22 straight games but more importantly they moved a game ahead of the Clippers and Grizzlies in the race for the third seed in the Western Conference.
The Nuggets (55-25) can clinch home-court advantage in the first round with a win at Milwaukee on Monday night or a victory over Phoenix at home on Wednesday night.
"It's a 'wow' year for me," Karl said. "I've had a few before. I haven't had one since I was in Seattle, though. I've had the privilege to be on teams that won 60 a couple of times. That's pretty good. Fifty-five is the next-best thing.
"I do idealistic and realistic predictions and I thought the most we could squeeze out this year was 54, so we're above and beyond. I admire how much guys have stayed in this season and fought through some tough moments and continue to improve. So, it's a pretty special year."
Karl was thrilled at Lawson's return to the starting lineup. He had 12 points and 10 assists less than 48 hours after playing 20 minutes at Dallas.
"I don't think I could have asked for a better script out of Ty these last two games," Karl said.
Lawson said he's completely confident in his right heel now.
"Oh yeah, I think so. I pushed off it actually today going to the basket a couple of times, so I think I'm confident and just probably one or two more games I'll be back to regular," he said.
Iguodala also grabbed seven rebounds, dished out nine assists, blocked three shots and had three steals to go with his 28 points, marking the first time in his career he'd posted those numbers in a game.
And rookie Evan Fournier scored 24 points in his second career start, sinking a pair of crucial 3-pointers in the closing minutes after the Trail Blazers had cut a 20-point deficit to 104-101 with 3:33 left.
Portland was without three starters: LaMarcus Aldridge (right ankle), Wesley Matthews (right ankle) and Nicolas Batum (right shoulder), so coach Terry Stotts started four rookies, including Damian Lillard, who led the Trail Blazers with 30 points but also had eight of their 23 turnovers as Portland lost its 11th straight.
After Denver built a seemingly safe 83-63 lead, the Blazers made a game of it. J.J. Hickson's free throw with 3:33 left made it 104-101, but that was as close as it got. It was 106-102 when Lawson sank two free throws and Fournier swished a 3-pointer from the left corner to give Denver some breathing room. Fournier's 3-pointer from the other side made it 118-107, and their 55th win was secure.
"Ty Lawson just made some plays that we didn't have answers for," Stotts said. "But we played much better in the second half."
Karl would have preferred a blowout but said the tight game might pay dividends down the road, especially with so many backups playing key roles down the stretch.
With Gallinari done for the season and uncertainty surrounding Faried, the Nuggets' hopes of a strong playoff run will depend on what they get out of their deep lineup.
"It's a really good team," Iguodala said. "And it's been a really good year for us. But we don't want to get satisfied. We've still got work to do. We can't just settle for 55. We've got to try to get to 57."
With 55 wins, Lawson said this team has to be considered among the best in franchise history, "so hopefully it translates to the playoffs and we try to do what no Nuggets have ever done."
Win it all.
Notes: By improving to an NBA-best 37-3 at home, they also set a record Sunday for most home wins in a season since joining the NBA 37 years ago. Denver went 36-5 at home under Larry Brown in 1976-77. ... Portland has lost nine straight and 23 of its last 25 games in Denver.
Source: http://news.yahoo.com/nuggets-set-nba-franchise-mark-55th-win-011509119--spt.html
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Monday, April 15, 2013
Justin Bieber's 'Belieber' Comment No 'Big Deal' To Anne Frank House, Howard Stern
'I'm impressed that a young man in that position would even go to the Anne Frank house,' Stern says.
By Gil Kaufman
Justin Bieber
Photo: bieberfever.com
Source: http://www.mtv.com/news/articles/1705714/justin-bieber-anne-frank-howard-stern.jhtml
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HTC One for AT&T currently has an unlockable bootloader, but that'll soon change
If you're currently in the smallest (and most fortunate) of minorities to have an HTC One for AT&T in your hands, then you might want to go about unlocking its bootloader while the getting is good. As it just so happens, a few lucky individuals have already done just that, and to prove it's momentarily possible, they've shared their success within the forums of xda-developers. And if there was ever any doubt, we've confirmed this with our own review unit. Before you get too excited, though, HTC's affirmed to us that AT&T's One will not be supported by the HTCdev unlock service, which will effectively render its bootloader untouchable. As for the current discrepancy, one might speculate that the phone's identifier hasn't yet been blocked on the HTCdev site -- something that'd likely be resolved before the phone becomes officially available through retail channels this Friday. Naturally, if you're hoping to get in on the gravy train, it seems that your best bet will be to work your magic on an AT&T sales rep and then hope the unlocking service is still functional. Absent that, the HTC One Developer Edition seems just as tempting as ever.
Myriam Joire contributed to this report
Filed under: Cellphones, Mobile, HTC, AT&T
Via: Droid Life
Source: xda-developers
Source: http://www.engadget.com/2013/04/15/htc-one-att-bootloader/
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Ladybug for iPhone and iPad review: Learn about ladybugs in a fun and interactive way
Scholastic First Discovery: Ladybug is an iPhone and iPad app that is all about ladybugs. It teaches about the basic anatomy, eating habits, and developmental stages of ladybugs and more.
Each page of Ladybug is narrated by a woman's voice and includes fun interactions. For examples, you can view a 3D model of a ladybug, tap its wings to see them open, and help a ladybug eat a bunch of aphids.
The good
- Clean design
- Great graphics and illustrations
- Interesting
- Interactive
- Fully narrated
The bad
- Not universal. iPhone and iPad versions are separate purchases even though there aren't any special interface elements for the iPad version.
The bottom line
If you have kids, they are sure to enjoy learning about ladybugs with Ladybug for iPhone and iPad. It's easy to use and has fun interactions. And you never know, you may learn a thing or two yourself that you never knew about ladybugs!
- $1.99 for iPhone - Download now
- $1.99 for iPad - Download now
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Source: http://feedproxy.google.com/~r/TheIphoneBlog/~3/QNM17t8OvGc/story01.htm
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