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Jun 11, 2024

NASA rover gets blasted by solar storm on Mars, captures footage

Posted by in category: space

Mars isn’t protected.

Jun 11, 2024

How Space Flight Alters Kidney Structure and Function

Posted by in categories: biotech/medical, health

How can long-term space flight influence astronaut health, and specifically their organs? This is what a recent study published in Nature Communications hopes to address as a large team of international researchers conducted the most comprehensive study regarding astronaut kidney health and how it’s affected from both microgravity and galactic cosmic radiation (GCR) during long-term space missions. This study holds the potential to help astronauts, space agencies, medical professionals, and the public better understand the health risks associated with sending humans to other worlds, specifically to Mars.

“We know what has happened to astronauts on the relatively short space missions conducted so far, in terms of an increase in health issues such as kidney stones,” said Dr. Keith Siew, who is a Research Fellow in the Department of Renal Medicine at the University of College London (UCL) and lead author of the study. “What we don’t know is why these issues occur, nor what is going to happen to astronauts on longer flights such as the proposed mission to Mars.”

Aside from the 24 Apollo astronauts who traveled to the Moon, with 12 of them walking on the surface, nearly all human space travel has been limited to low-Earth orbit (LEO), totaling almost 700 people having traveled to space. During this time, they are protected by the Earth’s magnetic field, which shields them from harmful solar and cosmic radiation that could cause potentially irreparable harm to their health.

Jun 11, 2024

Wind from black holes may influence development of surrounding galaxies

Posted by in category: cosmology

Clouds of gas in a distant galaxy are being pushed faster and faster—at more than 10,000 miles per second—out among neighboring stars by blasts of radiation from the supermassive black hole at the galaxy’s center. It’s a discovery that helps illuminate the way active black holes can continuously shape their galaxies by spurring on or snuffing out the development of new stars.

Jun 11, 2024

A nanomaterial one-two punch quickly heals wounds in diabetic animal model

Posted by in categories: biotech/medical, nanotechnology

Diabetic wounds are slow-healing, potentially life-threatening complications with limited treatment options. But a two-step, nanomaterial-based strategy may open doors to better care.

Jun 11, 2024

Endocrine system — Anatomical terminology for healthcare professionals | Kenhub

Posted by in category: entertainment

Do you have trouble learning endocrine system terminology? That shall end today! Join us now on episode 10 of our Anatomical Terminology for Healthcare Professionals course series on Youtube:

Jun 11, 2024

From seashells to cement, nature inspires tougher building material

Posted by in category: materials

Inspired by the material that makes up oyster and abalone shells, engineers at Princeton have created a new cement composite that is 17 times more crack-resistant than standard cement and 19 times more able to stretch and deform without breaking. The findings could eventually help increase the crack resistance of a wide range of brittle ceramic materials, from concrete to porcelain.

Jun 11, 2024

A chain of copper and carbon atoms may be the thinnest metallic wire

Posted by in categories: computing, information science, nanotechnology, particle physics

While carbon nanotubes are the materials that have received most of the attention so far, they have proved very difficult to manufacture and control, so scientists are eager to find other compounds that could be used to create nanowires and nanotubes with equally interesting properties, but easier to handle.

So, Chiara Cignarella, Davide Campi and Nicola Marzari thought to use to parse known three-dimensional crystals, looking for those that—based on their structural and —look like they could be easily “exfoliated,” essentially peeling away from them a stable 1-D structure. The same method has been successfully used in the past to study 2D materials, but this is the first application to their 1-D counterparts.

The researchers started from a collection of over 780,000 crystals, taken from various databases found in the literature and held together by van der Waals forces, the sort of weak interactions that happen when atoms are close enough for their electrons to overlap. Then they applied an algorithm that considered the spatial organization of their atoms looking for the ones that incorporated wire-like structures, and calculated how much energy would be necessary to separate that 1-D structure from the rest of the crystal.

Jun 11, 2024

Germany is No 1 in Europe for EV production, No 2 in the world

Posted by in categories: sustainability, transportation

Germany’s automakers manufactured around 1.27 million BEVs and PHEVs in 2023, putting it at No. 2 behind China, but 2024 will be bumpy.

The German automotive industry association VDA says that 995,000 purely electric vehicles rolled off German assembly lines in 2023.

China dominates global EV production, but most of its cars are sold domestically. By contrast, 76% of German EVs are sold abroad. The US holds the spot for the world’s third-largest EV maker. And Germany, the home of key automakers such as Volkswagen, BMW, and Mercedes-Benz, leads Europe with more EVs produced than second-placed Spain (256,000) and France (225,000) combined.

Jun 11, 2024

Scientists make and test efficient water-splitting catalyst predicted by theory

Posted by in categories: chemistry, energy, sustainability

Hydrogen (H2) is a promising fuel for reducing greenhouse gases, especially if produced by using renewable energy to split water molecules (H2O). But as simple as it may seem to break water into hydrogen and oxygen, the chemistry is complex.

Jun 11, 2024

3D-printed mini-actuators can move small soft robots, lock them into new shapes

Posted by in category: robotics/AI

If users wish to “freeze” the soft robot’s shape, they can apply moderate heat (64°C, or 147°F), and then let the robot cool briefly. This prevents the soft robot from reverting to its original shape, even after the liquid in the microfluidic channels is pumped out. If users want to return the soft robot to its original shape, they simply apply the heat again after pumping out the liquid, and the robot relaxes to its original configuration.

“A key factor here is fine-tuning the thickness of the shape memory layer relative to the layer that contains the microfluidic channels,” says Yinding Chi, co-lead author of the paper and a former Ph.D. student at NC State. “You need the shape memory layer to be thin enough to bend when the actuator’s pressure is applied, but thick enough to get the soft robot to retain its shape even after the pressure is removed.”

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