Tag: open source

3D-Printed Teeth Can Kill 99% of Dental Bacteria

An anonymous reader writes: A research group in the Netherlands has developed a new plastic resin that can destroy most dental bacteria when used for the creation of dental appliances via 3D-printing. The process involves embedding antimicrobial quaternary ammonium salts inside extant dental resin polymers. Since the salts are positively charged, these disrupt negatively-charged bacterial membranes. The process is also being mooted for use in the creation of knee arthroplasties, and in the manufacture of children’s toys and food packaging. Read more of this story at Slashdot.

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3D-Printed Teeth Can Kill 99% of Dental Bacteria

Rod Logic Computers and Why We Don’t Already Have Them

szczys writes: Carbon Nanotubes and Graphene breakthroughs pop up in the news often enough for them to be considered buzzwords. Most of the time it’s the superconducting properties of graphene that are touted, but molecule-scale structures also hold the promise of building mechanical computing devices that are unimaginably small. The reason we don’t have these things yet comes down to the manufacturing process. Building machines out of carbon molecules is commonly called Rod Logic — a topic many know from the seminal novel The Diamond Age. Al Williams discusses how Rod Logic works and highlights some of the places we’re already seeing these materials like to help cool LED light bulbs, and to strengthen composites. Read more of this story at Slashdot.

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Rod Logic Computers and Why We Don’t Already Have Them

Maybe You Don’t Need 8 Hours of Sleep After All

schwit1 writes: You’ve heard of the Paleo diet, but the next big thing in health may well be the Paleo sleep schedule. A UCLA researcher studied three hunter-gatherer and hunter-farmer groups — the Hadza in Tanzania, San in Namibia, and Tsimane in Bolivia, “who live roughly the same lifestyle humans did in the Paleolithic, ” as NPR reports — and determined our ancient ancestors may not have slept nearly as much we thought, and may have actually slept less than modern Westerners. “People like to complain that modern life is ruining sleep, but they’re just saying: Kids today!” Jerome Siegel tells the Atlantic . “It’s a perennial complaint but you need data to know if it’s true.” Siegel found that members of the three aforementioned groups sleep between 5.7 hours and 7.1 hours per night. That’s less than is recommended for our health, yet the groups seemed very healthy indeed. (And if you’re feeling insomniac, some earlier Slashdot stories about sleep are also pretty thought-provoking.) Read more of this story at Slashdot.

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Maybe You Don’t Need 8 Hours of Sleep After All

New iOS 9 Features Mean System-Wide Tor Is In the Works For the First Time

Patrick O’Neill writes: At a time when privacy and encryption on mobile devices are the subject of political storm, last month’s iOS 9 release means that Apple devices will finally get what Android has had for years: System-wide Tor anonymity. A handful of security experts recently set to work on projects to bring more powerful anonymity to iOS. “There are a bunch of pieces in the works, ” Tor developer and Guardian Project leader Nathan Freitas told the Daily Dot. “We just started to work on it and think about it. Tor knows we can’t ignore all the iOS 9 users in the world.” Read more of this story at Slashdot.

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New iOS 9 Features Mean System-Wide Tor Is In the Works For the First Time

Terahertz Radiation To Enable Portable Particle Accelerators

Zothecula writes with this Gizmag story about an interdisciplinary team of researchers who have built the first prototype of a miniature particle accelerator that uses terahertz radiation. “Researchers at MIT in the US and DESY (Deutsches Elektronen-Synchrotron) in Germany have developed a technology that could shrink particle accelerators by a factor of 100 or more. The basic building block of the accelerator uses high-frequency electromagnetic waves and is just 1.5 cm (0.6 in) long and 1 mm (0.04 in) thick, with this drastic size reduction potentially benefitting the fields of medicine, materials science and particle physics, among others.” Read more of this story at Slashdot.

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Terahertz Radiation To Enable Portable Particle Accelerators

"E-mailable" House Snaps Together Without Nails

MikeChino writes: Your next house could snap together like a jigsaw puzzle without the use of any power tools. Clemson University students designed and built Indigo Pine, a carbon-neutral house that exists largely as a set of digital files that can be e-mailed to a wood shop anywhere in the world, CNC cut, and then assembled on-site in a matter of days. “Indigo Pine has global application, ” says the Clemson team. “Because the house exists largely as a set of digital files, the plans can be sent anywhere in the world, constructed using local materials, adapted to the site, and influenced by local culture.” Read more of this story at Slashdot.

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"E-mailable" House Snaps Together Without Nails

World’s First 5G Field Trial Delivers Speeds of 3.6Gbps Using Sub-6GHz

Mark.JUK writes: Global Chinese ICT firm Huawei and Japanese mobile giant NTT DOCOMO today claim to have conducted the world’s first large-scale field trial of future 5th generation (5G) mobile broadband technology, which was able to deliver a peak speed of 3.6Gbps (Gigabits per second). Previous trials have used significantly higher frequency bands (e.g. 20-80GHz), which struggle with coverage and penetration through physical objects. By comparison Huawei’s network operates in the sub-6GHz frequency band and made use of several new technologies, such as Multi-User MIMO (concurrent connectivity of 24 user devices in the macro-cell environment), Sparse Code Multiple Access (SCMA) and Filtered OFDM (F-OFDM). Assuming all goes well then Huawei hopes to begin a proper pilot in 2018, with interoperability testing being completed during 2019 and then a commercial launch to follow in 2020. But of course they’re not the only team trying to develop a 5G solution. Read more of this story at Slashdot.

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World’s First 5G Field Trial Delivers Speeds of 3.6Gbps Using Sub-6GHz

SIgn Of the Times: Calif. Privacy Protections Signed Into Law

The EFF reports a spot of bright news from California: Governor Jerry Brown today signed into law the California Electronic Communications Privacy Act. CalECPA, says the organization, “protects Californians by requiring a warrant for digital records, including emails and texts, as well as a user’s geographical location. These protections apply not only to your devices, but to online services that store your data. Only two other states have so far offered these protections: Maine and Utah.” The ACLU provides a fact sheet (PDF) about what the bill entails, which says: SB 178 will ensure that, in most cases, the police must obtain a warrant from a judge before accessing a person’s private information, including data from personal electronic devices, email, digital documents, text messages, and location information. The bill also includes thoughtful exceptions to ensure that law enforcement can continue to effectively and efficiently protect public safety in emergency situations. Notice and enforcement provisions in the bill provide proper transparency and judicial oversight to ensure that the law is followed. Read more of this story at Slashdot.

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SIgn Of the Times: Calif. Privacy Protections Signed Into Law

Endocannabinoids Contribute To Runner’s High

MTorrice writes: After a nice long bout of aerobic exercise, some people experience what’s known as a “runner’s high” — a feeling of euphoria coupled with reduced anxiety and a lessened ability to feel pain. For decades, scientists have associated this phenomenon with an increased level in the blood of beta-endorphins, which are opioid peptides thought to elevate mood. Now, German researchers have shown the brain’s endocannabinoid system—the same one affected by marijuana’s 9-tetrahydrocannabinol (THC)—may also play a role in producing runner’s high, at least in mice. Read more of this story at Slashdot.

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Endocannabinoids Contribute To Runner’s High

NY Times Passes 1M Digital Subscribers

HughPickens.com writes: Many news organizations, facing competition from digital outlets, have sharply reduced the size of their newsrooms and their investment in news gathering but less than four-and-a-half years after launching its pay model the NY Times has increased coverage as it announced that the Times has passed one million digital-only subscribers, giving them far more than any other news organization in the world. The Times still employs as many reporters as it did 15 years ago — and its ranks now include graphics editors, developers, video journalists and other digital innovators. “It’s a tribute to the hard work and innovation of our marketing, product and technology teams and the continued excellence of our journalism, ” says CEO Mark Thompson. According to Ken Doctor the takeaway from the Times success is that readers reward elite global journalism. The Wall Street Journal is close behind the Times, at 900, 000, while the FT’s digital subscription number stands at 520, 000. “These solid numbers form bedrock for the future. For news companies, being national now means being global, and being global means enjoying unprecedented reach, ” says Doctor. “These audiences of a half-million and more portend more reader revenue to come.” Read more of this story at Slashdot.

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NY Times Passes 1M Digital Subscribers