科学 ニュース

Japanese authorities said they were forced to abandon plans Thursday to send in drones for a second day to probe one of the damaged reactors at the Fukushima Daiichi nuclear power plant because of equipment failure.

Difficult-to-cut materials such as titanium alloys, high-temperature alloys, metal/ceramic/polymer-matrix composites, hard and brittle materials, as well as geometrically complex components such as thin-walled structures, micro channels and complex surfaces, are widely used in aerospace community.

Transforming base materials into gold was one of the elusive goals of the alchemists of yore. Now Professor Raffaele Mezzenga from the Department of Health Sciences and Technology at ETH Zurich has accomplished something in that vein. He has not of course transformed another chemical element into gold, as the alchemists sought to do. But he has managed to recover gold from electronic waste using a byproduct of the cheesemaking process.

In March 2023, the US government announced an ambitious new course for its national bio strategy. It’s aptly named “Bold Goals for U.S. Biotechnology and

A solid understanding of soil mechanics and behavior is one of the fundamental pillars of geotechnical engineering. The stability and resilience of many modern geotechnical structures, including building foundations, dams, bridges, and embankments, rely on appropriate modeling based on accurate measurements of soil properties.

A ship powered by renewable energy, including hydrogen produced onboard, is docked in the southeastern US state of Florida this week as it prepares to finish the last leg of a voyage around the world.

Whether smoked, eaten or vaporized, cannabis use is associated with increased risk of heart disease, heart attack and stroke, according to new research published in the American Heart Association's peer-reviewed journal.

The world is rapidly moving towards a renewable energy future. To support the transition, we must prepare backup energy supplies for times when solar panels and wind turbines are not producing enough electricity.

A research team led by Profs. Zhang Zhefeng and Zhang Zhenjun from the Institute of Metal Research of the Chinese Academy of Sciences has proposed an innovative strategy to fabricate an anti-fatigue 3D-printed titanium alloy by separately regulating their microstructure and defects, called as net-additive manufacturing preparation (NAMP).

In order to prevent power grid failure in a society where electrification is supplied increasingly by variable sources like solar and wind, researchers in Sweden report the development of artificial intelligence algorithms intended to react swiftly when the network's voltage balance is threatened.

Your next router will know where you're sitting. A team of researchers from two Madrid universities—Polytechnic (UPM) and Carlos III (UC3M)—has developed a prototype router with high positioning accuracy that allows them to know the exact location of a mobile phone.

フェデレーテッド ラーニング (FL) は、複数のデータ所有者が生のデータセットを共有せずに共同でモデルをトレーニングできるようにする人気の機械学習パラダイムとして登場しました。機密データに対する幅広い分析アプリケーションの可能性を秘めています。

Solar-driven photocatalytic or photoelectrochemical water splitting holds great promise for direct solar-to-hydrogen energy conversion, especially in the context of the carbon-neutral initiative, while its practical applications hinge on significant advances in the scalable production of robust and efficient photoactive films.

Our recent article published in Nature Energy relates our first attempt at the development of a scalable photoelectrochemical (PEC) system to produce green hydrogen.

Multi-junction solar cells, solar cells comprised of many individual semiconductor junctions stacked together, have the potential of outperforming single-junction solar cells both in terms of efficiency and stability. In recent years, material scientists and engineers have been trying to identify viable material combinations for fabricating these solar cells.

Perovskites, a broad class of compounds with a particular kind of crystal structure, have long been seen as a promising alternative or supplement to today's silicon or cadmium telluride solar panels. They could be far more lightweight and inexpensive, and could be coated onto virtually any substrate, including paper or flexible plastic that could be rolled up for easy transport.

A drone small enough to fit in one's hand flew inside one of the damaged reactors at the wrecked Fukushima Daiichi nuclear power plant Wednesday in hopes it can examine some of the molten fuel debris in areas where earlier robots failed to reach.

Zinc-air batteries are an inexpensive, powerful battery alternative that can be used on a small scale to power electronics or on a large scale for electric vehicles or energy storage. These batteries work when oxygen from the air oxidizes zinc, but the difficulty in oxygen activation, which degrades battery performance, has prevented their wide commercial adoption.

International flights can transport us to most of the world's major cities within a day or two and later bring us home—often for less than a thousand dollars per seat. This jet-setting, however, comes with a heavy carbon emissions cost. Flying coach from Los Angeles to London adds more carbon into the atmosphere than the average lifetime carbon contribution of those living in many of the world's developing countries.

Imagine wearing a thin flexible sticker that can turn your hand or finger movement into communication without you having to say a word or tap a touch screen. Researchers have developed a new type of wearable sensor that can accomplish this futuristic feat and could open new possibilities for rehabilitation applications and help those with disabilities to communicate more easily.