2023-11-21 13:16:25物质与能量
利用声波创造更安全的公共空间

The risk of hearing loss does not come just from loud machinery or other obvious noise. It can also affect people in public environments like theaters and concert halls. Absorbing this excess sound to make public environments safer for hearing and using t

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2023-11-21 13:16:25物质与能量
微小的铰链如何弯曲冠状病毒的感染传播高峰

A coronavirus uses protein "spikes" to grab and infect cells. Despite their name, those spikes aren't stiff and pointy. They're shaped like chicken drumsticks with the meaty part facing out, and the meaty part can tilt every which way on its slender s

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2023-11-21 13:16:24物质与能量
保密:云数据存储安全方法利用量子物理

Distributed cloud storage is a hot topic for security researchers around the globe pursuing secure data storage, and a team in China is now merging quantum physics with mature cryptography and storage techniques to achieve a cost-effective cloud storage s

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2023-11-21 13:16:23物质与能量
闭环地热系统可行性的新工具模型

Geothermal power has a lot of promise as a renewable energy source that is not dependent on the sun shining or the wind blowing, but it has some challenges to wide adoption. One of these challenges is that there are a limited number of locations in the U.

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2023-11-21 13:16:22物质与能量
当我们感觉到不存在的东西

Virtual reality (VR) is not only a technology for games and entertainment, but also has potential in science and medicine. Researchers at Ruhr University Bochum, Germany, have now gained new insights into human perception with the help of VR. They used vi

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2023-11-21 13:16:22物质与能量
开发个人背部训练机

Back pain is extremely widespread. According to figures in the most recent 2023 Health Report, issued by the German health insurer DAK, around 18 percent of cases in which employees submit sick notes involve musculoskeletal ailments, above all back compla

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2023-11-21 13:16:21物质与能量
新的水处理方法可以产生绿色能源

Researchers from ICIQ in Spain have designed micromotors that move around on their own to purify wastewater. The process creates ammonia, which can serve as a green energy source. Now, an AI method developed at the University of Gothenburg will be used to

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2023-11-21 13:16:20物质与能量
将PFAS“永久化学品”转化为有价值的化合物

Researchers have successfully synthesized ligands called fluorinated N-heterocyclic carbenes (NHCs) from environmentally harmful perfluoroalkenes, a type of synthetic chemicals also referred to as PFAS. These NHCs are valuable for stabilizing unstable mol

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2023-11-21 13:16:19物质与能量
这个3D打印机可以观察自己制造物体

With 3D inkjet printing systems, engineers can fabricate hybrid structures that have soft and rigid components, like robotic grippers that are strong enough to grasp heavy objects but soft enough to interact safely with humans.

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2023-11-21 13:16:19物质与能量
使用化妆品成分保护电池

Xanthan gum, derived from plants like cabbage and known for its carbohydrate content, serves as a natural protective barrier in cosmetics. In a recent development, this remarkable substance has been harnessed to create a protective shield for battery elec

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2023-11-21 13:16:18物质与能量
筛查旧尿液样本的新方法揭示了以前未被发现的“设计药物”

Researchers from the University of B.C. and the BC Provincial Toxicology Centre (BCPTC) have developed a more efficient way to find out which new 'designer drugs' are circulating in the community.

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2023-11-21 13:16:17物质与能量
新型激光装置用超快脉冲探测超材料结构

Metamaterials are products of engineering wizardry. They are made from everyday polymers, ceramics, and metals. And when constructed precisely at the microscale, in intricate architectures, these ordinary materials can take on extraordinary properties.

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