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Aug 12, 2021
Antibiotic resistance: Alternating between drugs not the answer
Posted by Jason Blain in category: biotech/medical
In a new study, researchers have shown that antibiotic cycling — which involves doctors switching between antibiotics to overcome antibiotic resistance — may be an ineffective and unsustainable strategy.
New research sheds light on the potential limitations of ‘antibiotic cycling’ as a way of combatting antibiotic resistance.
Aug 12, 2021
Magnetizable Concrete in Roads Could Charge Electric Cars While You Drive
Posted by Jason Blain in categories: particle physics, sustainability, transportation
Last month, Indiana’s Department of Transport (INDOT) announced a collaboration with Purdue University and German company Magment to test out whether cement with embedded magnetized particles could provide an affordable road-charging solution.
Most wireless vehicle charging technologies rely on a process known as inductive charging, where electricity pumped into a wire coil creates a magnetic field that can induce an electric current in any other nearby wire coil. The charging coils are installed at regular intervals under the road, and cars are fitted with a receiver coil that picks up the charge.
But installing thousands of miles of copper under the road is obviously fairly costly. Magment’s solution is to instead embed standard concrete with recycled ferrite particles, which are also able to generate a magnetic field but are considerably cheaper. The company claims its product can achieve transmission efficiency of up to 95 percent and can be built at “standard road-building installation costs.”
Aug 12, 2021
Hyperion’s Insane New Hydrogen-Powered EV Supercar Has a 1,000-Mile Range—and Can Recharge in 5 Minutes
Posted by Quinn Sena in category: space
Developed with ex-NASA engineers and current space technologies, the XP-1 also offers a blistering sub-3-second sprint to 60 mph.
Aug 12, 2021
Forget Flying Cars. The World’s First Flying Motorcycle Is Coming
Posted by Quinn Sena in category: space travel
😀
The Speeder’s design team said the sci-fi sky-bike recently passed flight tests. They expect it to be commercially available by 2023.
Aug 12, 2021
SpaceX CEO Elon Musk details orbital refueling plans for Starship Moon lander
Posted by Genevieve Klien in categories: Elon Musk, government, space travel
After a much-anticipated GAO denial of Blue Origin and Dynetics protests over NASA’s decision to solely award SpaceX a contract to turn Starship into a crewed Moon lander, an in-depth (but heavily redacted) document explaining that decision was released on August 10th.
Aside from ruthlessly tearing both companies’ protests limb from limb, the US Government Accountability Office’s decision also offered a surprising amount of insight into SpaceX’s HLS Starship proposal. One of those details in particular seemed to strike an irrational nerve in the online spaceflight community. Specifically, in its decision, GAO happened to reveal that SpaceX had proposed a mission profile that would require as many as 16 launches to fully fuel a Starship Lander and stage the spacecraft in an unusual lunar orbit.
After around 24 hours of chaos, confusion, and misplaced panic, SpaceX CEO Elon Musk finally weighed in on the GAO document’s moderately surprising indication that each Starship Moon landing would require sixteen SpaceX launches.
Aug 12, 2021
Attacks against industrial networks will become a bigger problem. We need to fix security now
Posted by Genevieve Klien in category: cybercrime/malcode
There’s very few opportunities in cybersecurity where you get the benefit of foresight. This could be one.
Aug 12, 2021
Recovering waste heat from solar cells via a thermoelectric generator
Posted by Genevieve Klien in categories: solar power, sustainability
Heat flows naturally through the TEG because its cold side is kept at room temperature, while its hot side, which is in thermal contact with the cell, is at a high temperature. The Seebeck effect, which is the direct conversion of temperature differences between two semiconductor materials into electric voltage, generates this difference which then translates into additional electrical power.
The scientists decided not to use a spectrum splitting technology, which is generally utilized in these applications, to direct different parts of the solar spectrum towards either the PV or the TEG unit. “It is more convenient, in terms of final efficiency gains, to keep the solar cell at the same temperature of the TEG hot side, instead of keeping the cell cold but losing much of the recoverable heat,” the academics explained, noting that a wide-gap solar cell based on perovskite was chosen for the device, due to its lower sensitivity to high temperatures. “Temperature-sensitive materials, such as silicon, lose too much efficiency to make the hybridization convenient,” they further explained.
Aug 12, 2021
Awake the Future: Episode 1
Posted by Jose Ruben Rodriguez Fuentes in category: futurism
Aug 12, 2021
Aged skeletal stem cells interfere with healing and promote ‘inflamm-aging’
Posted by Kevin Huang in categories: biotech/medical, life extension
Researchers at the Stanford Institute for Stem Cell Biology and Regenerative Medicine have discovered how changes in aging skeletal stem cells may be an underlying cause of poor fracture healing, osteoporosis and various blood disorders as well as generalized inflammation and aging (sometimes called “inflamm-aging”) of cells and systems throughout the body. However, the researchers are also discovering how they might reinvigorate aging skeletal stem cell so that they start acting younger again, potentially reversing these changes.
“Skeletal stem cells give rise to bone, cartilage, and special cells that provide a niche or nursery for blood and immune stem cells to develop,” said Charles Chan, PhD, a member of the institute and an assistant professor in the Department of Surgery, Plastic and Reconstructive Surgery, and Immunology. “So if aged skeletal stem cells are not performing well, they can contribute to a wide variety of the disorders that we find in older people.”
The Research was published in the journal Nature. Chan and professor Michael Longaker, MD, are senior authors on the paper. Longaker is the Dean P. and Louise Mitchell Professor in the School of Medicine and a member of the Institute for Stem Cell Biology and Regenerative Medicine. Postdoctoral fellow Thomas Ambrosi, PhD is a co-first author along with former medical student Owen Marecic, MD and former postdoctoral fellow Adrian McArdle, MD, PhD.