Tech Today w/ Ken May

Archive for September 18th, 2017

New super-glue inspired by slug slime

Posted by kenmay on September - 18 - 2017

Surgeons close internal incisions with stitches and staples but they, and their patients, would benefit from a glue that stays stuck even to wet tissue and organs. Researchers from McGill University in Montreal are making progress with a powerful new glue inspired by the the sticky slime secreted by scared slugs. Science News surveys the state-of-the-art in adhesives that take inspiration from marine worms, mussels, and geckos: Using the (slug-inspired) glue to plug a hole in the pig heart worked so well that the heart still held in liquid after being inflated and deflated tens of thousands of times. (McGill University’s Jianyu) Li, who did the research while at Harvard University, and colleagues also tested the glue in live rats with liver lacerations. It stopped the rats’ bleeding, and the animals didn’t appear to suffer any bad reaction from the adhesive… One layer of the material is a polymer, a type of material made from long molecules built from many repeated subunits, like a string of beads. Positively charged appendages dangling off the polymers are drawn to wet tissue surfaces by the same forces underlying static electricity. This first layer weaves into another layer, a water-based gel. The gel layer acts like a shock absorber in a car, Li says. It soaks up energy that might otherwise dislodge or snap the adhesive. Despite being 90 percent water, the material is both sticky and tough, Li says. The fact that it’s mostly water makes it more likely to be nontoxic to humans. ” Animal goo inspires better glue ” (Science News) https://www.youtube.com/watch?v=2p624MDdDw4

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Chinese Scientists Are Developing A Vaccine Against Cavities

Posted by kenmay on September - 18 - 2017

A vaccine against tooth decay “is urgently needed” writes Nature — and a team of Chinese scientists is getting close. hackingbear writes: Scientists at Wuhan Institute of Virology, Chinese Academy of Sciences developed low side effects and high protective efficiency using flagellin-rPAc fusion protein KFD2-rPAc, a promising vaccine candidate. In rat challenge models, KFD2-rPAc induces a robust rPAc-specific IgA response, and confers efficient prophylactic and therapeutic efficiency as does KF-rPAc, while the flagellin-specific inflammatory antibody responses are highly reduced. Read more of this story at Slashdot.

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Enlarge / HP Z8 Workstation (credit: HP) If you’re a demanding computer user, sometimes your 13″ Ultrabook laptop just won’t quite cut it. For those looking for a little more computing power, HP’s new Z8 workstation could be just the answer. The latest iteration of HP’s desktop workstations packs in a pair of Intel Skylake-SP processors , topping out with twinned Xeon Platinum 8180 chips: 28 cores/56 threads and 38.5MB cache each running at 2.5-3.8GHz, along with support for up to 1.5TB RAM. Next year, you’ll be able to go higher still with the 8180M processors; same core count and speeds, but doubling the total memory capacity to 3TB, as long as you want to fill the machine’s 24 RAM slots. Those processors and memory can be combined with up to three Nvidia Quadro P6000 GPUs, or AMD Radeon Pro WX 9100 parts if you prefer that team. The hefty desktop systems have four internal drive bays, two external (and a third external for an optical drive), and nine PCIe slots. Storage options include up to 4TB of PCIe-mounted SSD, and 48TB of spinning disks. A range of gigabit and 10 gigabit Ethernet adaptors are available; the machines also support 802.11a/b/g/n/ac Wi-Fi and Bluetooth 4.2. Thunderbolt 3 is available with an add-in card. Read 5 remaining paragraphs | Comments

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