New infections diagnosed in Brigham and Women’s employees dropped from 12 or 14 a day to more like eight once they all had to wear masks, and to about six once patients had to wear masks as well.
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SOUTHERN UNITED STATES — Over 20 tornadoes touched down in the southern United States Wednesday, April 22 and more are expected Thursday, April 23. At one point, there were four distinct supercells on radar producing a tornado in Oklahoma.
Continue reading “Over 20 tornadoes hammered the South on Wednesday, more expected Thursday” »
The path forward begins with admitting the nation has a bomber shortfall. Retiring more aircraft exacerbates the problem. Nor is this just an Air Force problem. Bombers are national assets essential to our security strategy and must be prioritized accordingly. If other services have excess funds to invest in ideas like a 1,000-mile-range cannon when thousands of strike aircraft, various munitions and remotely piloted aircraft can fill the exact same mission requirements, it is time for a roles and missions review to direct funding toward the most effective, efficient options. Bombers would compete well in such an assessment. Ultimately, the solution demands doubling down on the B-21 program.
There comes a point where you cannot do more with less. Given the importance of bombers to the nation, rebuilding the bomber force is not an option — it is an imperative.
Retired U.S. Air Force Maj. Gen. Larry Stutzriem served as a fighter pilot and held various command positions. He concluded his service as the director of plans, policy and strategy at North American Aerospace Defense Command and U.S. Northern Command. He is currently the director of studies at the Mitchell Institute for Aerospace Studies, where Douglas Birkey is the executive director. Birkey researches issues relating to the future of aerospace and national security, and he previously served as the Air Force Association’s director of government relations.
Volcano activity update.
Although detailed statistics are not kept on daily activity, generally there are around 20 volcanoes actively erupting at any particular time.
Overall there are 45 volcanoes with ongoing eruptions as of the Stop Dates indicated, and as reported through the last data update (17 April 2020) and shown in the diagram below.
Continue reading “More than 45 volcanoes are erupting right now” »
While we might often take our sense of touch for granted, for researchers developing technologies to restore limb function in people paralyzed due to spinal cord injury or disease, re-establishing the sense of touch is an essential part of the process. And on April 23 in the journal Cell, a team of researchers at Battelle and the Ohio State University Wexner Medical Center report that they have been able to restore sensation to the hand of a research participant with a severe spinal cord injury using a brain-computer interface (BCI) system. The technology harnesses neural signals that are so miniscule they can’t be perceived and enhances them via artificial sensory feedback sent back to the participant, resulting in greatly enriched motor function.
“We’re taking subperceptual touch events and boosting them into conscious perception,” says first author Patrick Ganzer, a principal research scientist at Battelle. “When we did this, we saw several functional improvements. It was a big eureka moment when we first restored the participant’s sense of touch.”
The participant in this study is Ian Burkhart, a 28-year-old man who suffered a spinal cord injury during a diving accident in 2010. Since 2014, Burkhart has been working with investigators on a project called NeuroLife that aims to restore function to his right arm. The device they have developed works through a system of electrodes on his skin and a small computer chip implanted in his motor cortex. This setup, which uses wires to route movement signals from the brain to the muscles, bypassing his spinal cord injury, gives Burkhart enough control over his arm and hand to lift a coffee mug, swipe a credit card, and play Guitar Hero.
Stephen Wolfram is a cult figure in programming and mathematics. He is the brains behind Wolfram Alpha, a website that tries to answer questions by using algorithms to sift through a massive database of information. He is also responsible for Mathematica, a computer system used by scientists the world over.
Last week, Wolfram launched a new venture: the Wolfram Physics Project, an ambitious attempt to develop a new physics of our Universe.
The new physics, he declares, is computational. The guiding idea is that everything can be boiled down to the application of simple rules to fundamental building blocks.
The Solar System has been here for a long time. So, when ’Oumuamua was spotted in 2017, it was almost a dead cert it wasn’t the only object from interstellar space to visit us over that 4.57 billion-year history. Then comet 2I/Borisov showed up last year. That basically clinched it.
But where are the rest of our interstellar visitors? We’ll probably find a few more flying in from the wilds in the coming years. And, according to new research, a whole bunch of interstellar asteroids have been hanging out right here in the Solar System for a very long time.
Based on how they move around the Sun, a team of researchers has identified 19 asteroids they think were captured from another star, way back when the Solar System was just a few million years old.
Researchers have confirmed that neuropeptide somatostatin can improve cognitive function in the brain. A research group of Professor Seung-Hee Lee from the Department of Biological Sciences at KAIST found that the application of neuropeptide somatostatin improves visual processing and cognitive behaviors by reducing excitatory inputs to parvalbumin-positive interneurons in the cortex.
This study, reported at Science Advances on April 22nd, sheds a new light on the therapeutics of neurodegenerative diseases. According to a recent study in Korea, one in ten seniors over 65 is experiencing dementia-related symptoms in their daily lives such as memory loss, cognitive decline, and motion function disorders. Professor Lee believes that somatostatin treatment can be directly applied to the recovery of cognitive functions in Alzheimer’s disease patients.
Professor Lee started this study noting the fact that the level of somatostatin expression was dramatically decreased in the cerebral cortex and cerebrospinal fluid of Alzheimer’s disease patients.
The experimental coronavirus treatment remdesivir has failed in its first randomized clinical trial, inadvertently released results showed Thursday, dampening expectations for the closely watched drug.
But Gilead Sciences, the company behind the medicine, disputed how the now-deleted post had characterized the findings, saying the data showed a “potential benefit.”
The summary said the Chinese trial involved 237 patients, with 158 on the drug and 79 in a control group. Remdesivir was stopped early in 18 patients because of side effects.
