Please create an account to participate in the Slashdot moderation system

 


Forgot your password?
Close
typodupeerror

Submission + - New Threat to Seaside Nuclear Plants, Datacenters: Jellyfish (slashdot.org)

Submitted by Nerval's Lobster
Nerval's Lobster writes: One of the largest nuclear-power plants in the world was forced to shut down temporarily Sept. 29, after pipes that bring Baltic Sea water in to cool the plant’s turbines became clogged with tons of jellyfish. The sudden influx of common moon jellyfish overwhelmed the screens and filters that keep flotsam and most sea life out of the Oskarshamn nuclear plant in southeastern Sweden. The plant was forced to shut down its No. 3 reactor – the largest boiling-water reactor in the world, which generates 1,400 megawatts of electricity when it is jellyfish-free and running at full power. The reactor stayed down until early Oct. 1, after the jellyfish had been cleared out and engineers approved the cooling system as invertebrate-free. It’s not easy to overwhelm the cooling system for a nuclear power plant, but Oskarshamn’s is unusually resilient. There is a separate intake- and cooling system for each reactor, all of which were designed for the brackish, polluted water in that area of the Baltic Sea. Most datacenters are too far inland to worry about jellyfish in their cooling water, though green-IT-promoters Vertatique estimated that a 5,000-sq.-ft. datacenter would consume almost 9 million gallons of water for cooling. That means ocean-side datacenters that use sea water for cooling (such as Google's datacenter in Hamina, Finland — also on the Baltic Sea) are just as susceptible to jellyfish attacks as nuclear power plants.

Submission + - Digia Releases Qt 5.1 With Preliminary Support for Android And iOS

Submitted by Anonymous Coward
An anonymous reader writes: Finnish software and services firm Digia, which bought Qt from Nokia back in August, has released version 5.1 of the cross-platform application framework. Among the changes are ‘significant improvements’ to Qt Quick and preliminary support for Android and iOS. The latter means Qt on Android and iOS are both considered Technology Previews, letting developers start building for the two mobile operating systems and porting apps from other platforms by reusing the same code base. Although most of the Qt functionality and tool integration is already in place to start developing mobile apps, Digia promises complete ports to Android and iOS will come with the release of Qt 5.2 "later this year."

Submission + - Low-Cost Micromachine Writes Calligraphy With Atoms (acs.org) 1

Submitted by ckwu
ckwu writes: Scientists at Boston University have put together an inexpensive microelectromechanical machine that can direct atoms onto a surface in a controlled manner. The device—which acts as a moving stencil—can lay down such precise, complex patterns that the technique is akin to writing with atoms, the researchers say. They've used the machine to draw rings and infinity symbols out of gold atoms, but the technique should be compatible with almost any material.

Submission + - Underground 'Wind Mines' Could Keep Datacenters Powered (slashdot.org)

Submitted by Nerval's Lobster
Nerval's Lobster writes: Major IT vendors have been including custom-built wind- and solar-power farms in their datacenter construction plans. But while wind and solar power may be clean, they’re often unreliable, especially by the standards of datacenters that need a way to keep operating through any unexpected surges or drops in power. How about saving the wind that generates the power? That might work, according to researchers at the federal Bonneville Power Administration (BPA), and U.S. Department of Energy’s Pacific Northwest National Laboratory. A study published in February (PDF) outlined the potential benefit of pumping pressurized air into caverns deep underground as a way to store wind energy, then letting it out whenever demand spikes, or the wind drops, and the above-ground facilities need help spinning enough turbines to keep power levels steady. The technique, called Compressed Air Energy Storage (CAES) isn’t new: existing CAES plants in Alabama and Huntorf, Germany (built in 1991 and 1978, respectively) store compressed air in underground salt caverns hollowed out by solution mining (pumping salt-saturated water out of concentrations of salt buried far underground and replacing it with fresh water). But implementing such a technique for datacenters might take a little work. The BPA and the Pacific Northwest National Laboratory have already identified, and are evaluating, sites in the Pacific Northwest that would be suitable for CAES underground reservoirs; the first, which could be located in Washington’s Columbia Hills could—via existing CAES technology—store enough compressed air to generate a steady 207MW for 40 days of continuous usage, ultimately delivering 400 additional hours without adding any compressed air.

Submission + - The Los Angeles Schools buy iPad Trojan Horses for 30,000 students

Submitted by lpress
lpress writes: The Los Angeles Unified School District will spend $30 million over the next two years on iPads for 30,000 students. Coverage of the announcement has focused on Apple winning over other tablets, but that is not the key point. The top three proposals each included an app to deliver Pearson's K-12 Common Core System of Courses along with other third-party educational apps.

The Common Core curriculum is not yet established, but many states are committed to it, starting next year. The new tablets and the new commitment to the Common Core curriculum will arrive around the same time, and busy faculty (and those hired to train them) will adopt the Pearson material. The tablets will be obsolete in a few years and the hardware platform may change, but lock-in to Pearson's default curriculum may last for generations.

Submission + - D-Wave large-scale quantum chip validated (scienceblog.com)

Submitted by Anonymous Coward
An anonymous reader writes: A team of scientists says it has verified that quantum effects are indeed at work in the D-Wave processor, the first commercial quantum optimization computer processor. The team demonstrated that the D-Wave processor behaves in a manner that indicates that quantum mechanics has a functional role in the way it works. The demonstration involved a small subset of the chip’s 128 qubits, but in other words, the device appears to be operating as a quantum processor.
Medicine

UK Government Backs Three-Person IVF 132

Posted by Soulskill from the US-republicans-introduce-defense-of-test-tubes-act dept.
Dupple writes "The U.K. looks set to become the first country to allow the creation of babies using DNA from three people, after the government backed the in vitro fertilization technique. It will produce draft regulations later this year and the procedure could be offered within two years. Experts say three-person IVF could eliminate debilitating and potentially fatal mitochondrial diseases that are passed on from mother to child. Opponents say it is unethical and could set the UK on a 'slippery slope.' They also argue that affected couples could adopt or use egg donors instead. Mitochondria are the tiny, biological 'power stations' that give the body energy. They are passed from a mother, through the egg, to her child. Defective mitochondria affect one in every 6,500 babies. This can leave them starved of energy, resulting in muscle weakness, blindness, heart failure and death in the most extreme cases."
Robotics

DARPA-Funded Software Could Usher In the Era of Open-Source Robotics 17

Posted by Soulskill from the or-skynet,-either-one dept.
malachiorion writes "The best thing to come out of the DARPA Robotics Challenge, so far, isn't the lineup of nifty rescue bots being developed by teams around the world, or even Boston Dynamics' incredible Atlas humanoid. It's the pumped-up version of Gazebo, the free, open-source robotics simulation software whose expansion and further development is being funded by DARPA. This article has a look at how the software was used in the recent virtual leg of the competition, as well as how it could change the way robotics R&D is conducted (and create more roboticists, with its low-cost, cloud-based architecture)."

Slashdot Top Deals

Always look over your shoulder because everyone is watching and plotting against you.

Close