A new study reviews the state of the art of aging biomarkers and explores the future development of even better ways of measuring biological age.
The need for better aging biomarkers
Human life expectancy has been increasing throughout the 20th and 21st centuries due to improvements such as better access to healthcare and sanitation, lower child mortality, reduction of poverty, and better education access.
Scientists at Tokyo Institute of Technology (Tokyo Tech) have generated low-cost extreme ultraviolet (EUV) light by creating tin thin-film spheres using a polymer electrolyte “soap bubble” as a template and irradiating it with a laser.
#EUV #photonics
The team from Tokyo Tech, working with colleagues from University College Dublin, set out to find efficient, scalable, low-cost laser targets that could be used to generate EUV. The scientists created a tin-coated microcapsule or “bubble” — a low-density structure weighing as little as 4.2 nanograms and with a high level of controllability. For the bubble, they used polymer electrolytes, which are a dissolution of salts in a polymer matrix. The salts act as surfactants to stabilize the bubble.
The scientists coated the bubble with tin nanoparticles. “We produced polyelectrolyte microcapsules composed of poly(sodium 4-styrene-sulfonate) and poly(allylamine hydrochloride) and then coated them in a tin oxide nanoparticle solution,” professor Keiji Nagai said.
LONDON (Reuters) — A million doses of a potential COVID-19 vaccine being developed by British scientists are already being manufactured and will be available by September, even before trials prove whether the shot is effective, the team said on Friday.
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Cooling atoms to ultracold temperatures is a routine task in atomic physics labs, but molecules are a trickier proposition. Researchers in the US have now used a widely-applicable combination of methods to make molecules colder than ever before – a feat that could pave the way for applications in areas as diverse as high-temperature superconductivity and quantum computing.
In everyday life, we do not see the bizarre effects of quantum mechanics because the quantum states of the particles around us are constantly collapsing, or decohering, as they interact. At temperatures near absolute zero, however, some identical particles will simultaneously occupy the lowest energy quantum state available. This phenomenon is known as quantum degeneracy, and it was experimentally demonstrated in 1995, when groups led by Eric Cornell and Carl Wieman (then at the University of Colorado, Boulder) and Wolfgang Ketterle of the Massachusetts Institute of Technology (MIT) created the first Bose-Einstein condensates (BECs) with rubidium and sodium atoms, respectively.
Other groups have subsequently made condensates using other atomic species, and various techniques have been developed to cool atoms to quantum degeneracy. In one of the simplest methods, a sample of atoms is confined in a magnetic or optical trap. Hotter atoms with more kinetic energy are more readily able to escape, or evaporate, from this trap, so the remaining atoms become cooler. In another method, known as sympathetic cooling, one type of atom is cooled directly and allowed to thermalize with atoms of another type, thereby cooling them by extracting their kinetic energy.
Human clones have long been a topic of science fiction, but how far off are they in reality? Let’s take a look at current advances and see when and where we might see the first human clone.
The National Aeronautics and Space Administration, NASA, aims to send human missions to Mars in the 2030s. But scientists are still trying to learn more about the potential cancer risks for astronauts due to radiation exposure. Cancer risk from galactic cosmic radiation exposure is considered a potential “showstopper” for a manned mission to Mars.
A team led by researchers at Colorado State University used a novel approach to test assumptions in a model used by NASA to predict these health risks. The NASA model predicts that astronauts will have more than a three percent risk of dying of cancer from the radiation exposures they will receive on a Mars mission. That level of risk exceeds what is considered acceptable.
The study, “Genomic mapping in outbred mice reveals overlap in genetic susceptibility for HZE ion- and gamma-ray-induced tumors,” was published April 15 in Science Advances.
👽 Facial recognition and Covid 19 in Moscow, Russia.
Fyodor R.
MOSCOW – The Russian capital is home to a network of 178,000 surveillance cameras. Thousands of these cameras are already connected to facial recognition software under a program called “Safe City.” Police claim the technology has helped arrest more than 300 people.
