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Submission + - Japanese Company Develops a Solar Cell With Record-Breaking 26%+ Efficiency (arstechnica.com)

An anonymous reader writes: The silicon-based cells that make up a solar panel have a theoretical efficiency limit of 29 percent, but so far that number has proven elusive. Practical efficiency rates in the low-20-percent range have been considered very good for commercial solar panels. But researchers with Japanese chemical manufacturer Kaneka Corporation have built a solar cell with a photo conversion rate of 26.3 percent, breaking the previous record of 25.6 percent. Although it’s just a 2.7 percent increase in efficiency, improvements in commercially viable solar cell technology are increasingly hard-won. Not only that, but the researchers noted in their paper that after they submitted their article to Nature Energy, they were able to further optimize their solar cell to achieve 26.6 percent efficiency. That result has been recognized by the National Renewable Energy Lab (NREL). In the Nature Energy paper, the researchers described building a 180.4 cm2 cell using high-quality thin-film heterojunction (HJ)—that is, layering silicon within the cell to minimize band gaps where electron states can’t exist. Controlling heterojunctions is a known technique among solar cell builders—Panasonic uses it and will likely incorporate it into cells built for Tesla at the Solar City plant in Buffalo, and Kaneka has its own proprietary heterojunction techniques. For this record-breaking solar cell, the Kaneka researchers also placed low-resistance electrodes toward the rear of the cell, which maximized the number of photons that collected inside the cell from the front. And, as is common on many solar cells, they coated the front of the cell with a layer of amorphous silicon and an anti-reflective layer to protect the cell’s components and collect photons more efficiently.

Submission + - John Goodenough responds to skeptics of his new lithium-on battery (computerworld.com)

Lucas123 writes: John Goodenough, the University of Texas researcher who this week demonstrated new battery cells that are safer and have at least three times as much energy density as today's standard Li-on batteries, responded to skeptics who said the technology described in research published in a peer-reviewed journal, appear to defy the laws of thermodynamics. In an article published Monday by Quartz , various energy experts took exception to Goodenough's claims, even calling them "unbelievable." Goodenough is also co-inventor of the original lithium-ion battery. In an email to Computerworld, Goodenough said "any new discovery invites strong skepticism." In this case, the skeptical scientists wondered how it is possible to strip lithium from the anode and plate it on a cathode current collector to obtain a battery voltage since the voltage is the difference in the chemical potentials (Fermi energies) between the two metallic electrodes,. "The answer is that if the lithium plated on the cathode current collector is thin enough for its reaction with the current collector to have its Fermi energy lowered to that of the current collector, the Fermi energy of the lithium anode is higher than that of the thin lithium plated on the cathode current collector," Goodenough said.

Submission + - GNOME 3.24 Officially Released

prisoninmate writes: GNOME 3.24 just finished its six-month development cycle, and it's now the most advanced stable version of the modern and popular desktop environment used by default in numerous GNU/Linux distributions. It was developed since October 2016 under the GNOME 3.23.x umbrella, during which it received numerous improvements. Prominent new features of the GNOME 3.24 desktop environment include a Night Light functionality that promises to automatically shift the colors of your display to the warmer end of the spectrum after sunset, and a brand-new GNOME Control Center with redesigned Users, Keyboard & Mouse, Online Accounts, Bluetooth, and Printer panels. As for the GNOME apps, we can mention that the Nautilus file manager now lets users browse files as root (system administrator), GNOME Photos imitates Darktable's exposure and blacks adjustment tool, GNOME Music comes with ownCloud integration and lets you edit tags, and GNOME Calendar finally brings the Week view. New apps like GNOME Recipes are also part of this release.

Comment Re:Conversely... (Score 2) 202

Do you wish to claim that without patents, those nice thing would not be made?

Perhaps it would take more time, effort and money to make those things, but that is debatable.

Patents are also why we can't have nice things that share some property with a patented thing.
Patents are also why those nice things are more expensive.

Submission + - SPAM: SixXS is going to shutdown IPv6 tunnels

adler345 writes: SixXS is going to shutdown all IPv6 related services according to internal material which has been sended to partners. "All services will be turned down on 2017-06-06, after which the SixXS project will be retired. Users will no longer be able to use their IPv6 tunnels or subnets after this date, and are required to obtain IPv6 connectivity elsewhere, primarily with their Internet service provider." Users will be officially notified at the end of April and they will get 6 weeks of time to find alternative solutions.
Link to Original Source

Submission + - Why American Farmers Are Hacking Their Tractors With Ukrainian Firmware (vice.com)

AmiMoJo writes: To avoid the draconian locks that John Deere puts on the tractors they buy, farmers throughout America's heartland have started hacking their equipment with firmware that's cracked in Eastern Europe and traded on invite-only, paid online forums. Tractor hacking is growing increasingly popular because John Deere and other manufacturers have made it impossible to perform "unauthorized" repair on farm equipment, which farmers see as an attack on their sovereignty and quite possibly an existential threat to their livelihood if their tractor breaks at an inopportune time. "When crunch time comes and we break down, chances are we don't have time to wait for a dealership employee to show up and fix it," Danny Kluthe, a hog farmer in Nebraska, told his state legislature earlier this month. "Most all the new equipment [requires] a download [to fix]."

Submission + - Most Teens Who Abuse Opioids First Got Them From a Doctor (livescience.com)

An anonymous reader writes: Most American teenagers who abuse opioid drugs first received the drugs from a doctor, a new study finds. Researchers looked at trends in the use of prescription opioids among U.S. adolescents from 1976 to 2015. They found a strong correlation between teens' taking the drugs for medical reasons and then later taking them for "nonmedical" reasons, or in other words, abusing them, according to the study published today (March 20) in the journal Pediatrics. In 2015, the the most recent year of the study, 8 percent of adolescents reported abusing prescription opioids, and the majority of them had been prescribed opioids previously, the researchers found. The U.S. consumes about 80 percent of the world's prescription opioid supply. There has been consistent growth in the number of prescriptions written for opioids in the U.S., rising from 76 million prescriptions in 1991 to 207 million in 2013, according to the National Institute on Drug Abuse. However, the new study revealed that among teens, both medical and nonmedical use of opioid medications has declined in recent years, starting in 2013. The decline may be due to careful prescribing practices, Sean McCabe, a research professor at the University of Michigan, said. There are several medical procedures that teens may undergo for which opioids are recommended for pain management. But doctors can be careful about the amount of these drugs they prescribe, and limit refills. Parents can make sure that any leftover pills are discarded.

Submission + - Royal Jordanian Airlines Bans Electronics After US Voices Security 'Concerns' (theverge.com)

An anonymous reader writes: Royal Jordanian airlines banned the use of electronics on flights servicing the U.S. after government officials here expressed concerns. Details are scant, but CNN is reporting that other carriers based on the Middle East and Africa may be affected as well. The news broke when Royal Jordanian, a state-owned airline that operates around 500 flights a week, posted this cryptic notice on its Twitter feed. The ban, which includes laptops, tablets, and video games, but does not include smartphones or medical devices, is effective for Royal Jordanian flights servicing New York, Chicago, Detroit, and Montreal. A spokesperson for Royal Jordanian was not immediately available for clarification. Meanwhile, CNN is reporting that Royal Jordanian may not be the only carrier affected by these new security provisions. Jon Ostrower, the network’s aviation editor, just tweeted that as many as 12 airlines based in the Middle East and Africa could be impacted. A Saudi executive also tweeted that “directives by U.S. authorities” could affect passengers traveling from 13 countries, with the new measure set to go into effect over the next 96 hours.

Submission + - After Years Waiting For Google Fiber, KC Residents Get Cancellation Emails (arstechnica.com)

An anonymous reader writes: Some Kansas City residents who have been waiting years for Google Fiber to install service at their homes recently received e-mails canceling their installations, with no word on whether they'll ever get Internet service from the company. KSHB 41 Action News in Kansas City, Missouri, "spoke to several people, living in different parts of the metro, all who have recently received cancellation e-mails," the station reported last week. "The e-mails do not provide a specific reason for the cancellations. Instead they say the company was 'unable to build our network to connect your home or business at this time.'" While Google Fiber refuses to say how many installations have been canceled, KSHB said, "there is speculation the number of cancellations in the metro is as high as 2,700." "The company says it has slowed down in some areas to experiment with new techniques," such as wireless technology, the report also said. Google Fiber is still hooking up fiber for some new customers in parts of the Kansas City area. One resident who had his installation canceled is Larry Meurer, who was seeing multiple Google Fiber trucks in his neighborhood nearly two years ago, in the spring of 2015. "I'm left wondering what's going on," he told KSHB after getting the cancellation e-mail. Meurer lives in Olathe, Kansas, one of the largest cities in the Kansas City metro area. Residents only five houses away and around the corner have Google Fiber service, the report said. But Meurer said he and several neighbors who never got service were "terminated."

Submission + - Critical Cisco Flaw Found Buried in Vault 7 Documents

Trailrunner7 writes: Hundreds of models of Cisco switches are vulnerable to a remote-code execution bug in the company’s IOS software that can be exploited with a simple Telnet command. The vulnerability was uncovered by company researchers in the CIA hacking tool dump known as Vault 7.

The bug is a critical one and an attacker who is able to exploit it would be able to get complete control of a target device. The flaw lies in the Cluster Management Protocol (CMP) that’s used in IOS, and Cisco said it’s caused by the incorrect processing of CMP-specific Telnet options, as well as accepting and processing these commands from any Telnet connection.

“An attacker could exploit this vulnerability by sending malformed CMP-specific Telnet options while establishing a Telnet session with an affected Cisco device configured to accept Telnet connections. An exploit could allow an attacker to execute arbitrary code and obtain full control of the device or cause a reload of the affected device,” the Cisco advisory says.

Comment Wrong end of the stick (Score 1) 447

I think most people have missed the point. The uproar over this is not caused by Apple following the law and paying no tax. The uproar is caused by the imbalance of power this highlights between the rich and poor as well as the NZ governments seeming lack of interest in actually doing anything about it.

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