Young kids are the only group in the U.S. ineligible to receive a Covid vaccine, but efforts to vaccinate them have been met with delays.
The manipulation of electromagnetic waves and information has become an important part of our everyday lives. Intelligent metasurfaces have emerged as smart platforms for automating the control of wave-information-matter interactions without manual intervention. They evolved from engineered composite materials, including metamaterials and metasurfaces. As a society, we have seen significant progress in the development of metamaterials and metasurfaces of various forms and properties.
In a paper published in the journal eLight on May 6, 2022, Professor Tie Jun Cui of Southeast University and Professor Lianlin Li of Peking University led a research team to review intelligent metasurfaces. “Intelligent metasurfaces: Control, Communication and Computing” investigated the development of intelligent metasurfaces with an eye for the future.
This field has refreshed human insights into many fundamental laws. They have unlocked many novel devices and systems, like cloaking, tunneling, and holograms. Conventional structure-alone or passive metasurfaces has moved towards intelligent metasurfaces by integrating algorithms and nonlinear materials (or active devices).
New technology could add another layer of protection against the next pandemic by simply turning on a light. Researchers are exploring a new way of using ultraviolet light to make indoor air safer.
“It’s been known for 80 years or so that ultraviolet light can kill bacteria and inactivate viruses in the air so that they’re no longer infectious,” Don K. Milton, professor of occupational and environmental health at the University of Maryland School of Public Health, told CBS News.
Conventional UV-C light has been used extensively in places like hospitals, homeless shelters and prisons. But that conventional UV light can damage the skin and eye, so should not be shined directly at people.
Richard Feynman — A Curious Character
Today marks the 104th birthday of a legendary scientist, a nobel laureate, an educator, a visionary and an extraordinary human being Dr. Richard Feynman. He is remembered just as well for his scientific brilliance as he is for his playful nature and inquisitive storytelling.
Hearing loss is normally permanent as sensory cells responsible for transmitting frequency information from the world around us to the brain get damaged from excessive noise and lifestyle factors as we age. Up until now, it’s been challenging to selectively regrow these sensory cells that play an important part in transmitting sound through the outer and inner ear to the brain, but that might be about to change.
In a study involving mice, scientists from Northwestern University have identified a single master gene that can program ear hair cells (known as cochlear hair cells) into becoming either outer or inner ear hair cells required for hearing. The breakthrough is reported in the journal Nature.
“Our finding gives us the first clear cell switch to make one type versus the other,” said lead study author Jaime García-Añoveros, PhD, in a statement. “It will provide a previously unavailable tool to make an inner or outer hair cell. We have overcome a major hurdle.”
A college in the US has announced it will be closing its doors very soon following the impact of a cyberattack in December 2021.
Zack Mannheimer, the CEO of Alquist, predicts more US homes will be 3D printed than built “traditionally” within the next five years.
Imagine moving through airport security without having to take off your shoes or belt or getting pulled aside while your flight boards—while keeping all the precautions that ensure the safety of passengers and flight crews.
Imagine moving through airport security without having to take off your shoes or belt or getting pulled aside while your flight boards—while keeping all the precautions that ensure the safety of passengers and flight crews.
This is the challenge tackled by a team including researchers from Sandia National Laboratories—a challenge that led to development of the Open Threat Assessment Platform, which allows the Transportation Security Administration to respond more quickly and easily to threats to air travel safety.
“When we wanted to change how we screen in response to new threats,” said Andrew Cox, a Sandia R&D systems analyst who leads the OTAP project. “The technology was too rigid. TSA compensated by adding procedures. There’s a shoe bomber and you have to take your shoes off; liquid explosives arrived, and TSA had to limit liquids and gels.”
* Astrocytes play a variety of roles with neurons, but until now, scientists did not know that these cells carry electrical impulses.
* Applying new technology, Tufts University scientists recently discovered in mice that astrocytes are electrically active like neurons. Astrocytes play a variety of roles with neurons, but until now, scientists did not know that these cells carry electrical impulses.
Neurotransmitters are chemical messengers that facilitate the transfer of electrical signals between neurons and support the blood-brain barrier. Scientists have long understood that astrocytes control these substances to support neuronal health.
Continue reading “Researchers find new function performed by almost half of brain cells” »
Pharmaceutical intervention of aging requires targeting multiple pathways, thus there is rationale to test combinations of drugs targeting different but overlapping processes. In order to determine if combining drugs shown to extend lifespan and healthy aging in mice would have greater impact than any individual drug, a cocktail diet containing 14 ppm rapamycin, 1,000 ppm acarbose, and 1,000 ppm phenylbutyrate was fed to 20-month-old C57BL/6 and HET3 4-way cross mice of both sexes for three months. Mice treated with the cocktail showed a sex and strain-dependent phenotype consistent with healthy aging including decreased body fat, improved cognition, increased strength and endurance, and decreased age-related pathology compared to mice treated with individual drugs or control. The severity of age-related lesions in heart, lungs, liver, and kidney was consistently decreased in mice treated with the cocktail compared to mice treated with individual drugs or control, suggesting an interactive advantage of the three drugs. This study shows that a combination of three drugs, each previously shown to enhance lifespan and health span in mice, is able to delay aging phenotypes in middle-aged mice more effectively than any individual drug in the cocktail over a 3-month treatment period.
© 2022. The Author(s).
Conflict of interest statement.
