2023-11-21 13:16:52物质与能量
多国研究证实年轻人的CT扫描与癌症风险增加之间的关联

A multinational study of almost one million individuals confirms a strong and clear association between exposure to radiation from CT scans in young people and an increased risk of blood cancers. This is the main conclusion of the analyses led by the Barc

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2023-11-21 13:16:51物质与能量
了解橡胶材料的动力学行为

Rubber-like materials, commonly used in dampeners, possess a unique property known as dynamic viscoelasticity, enabling them to convert mechanical energy from vibrations into heat while exhibiting spring-like and flow-like behaviors simultaneously. Custom

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2023-11-21 13:16:50物质与能量
呼吸一口新鲜空气可以使产生药物的细胞活得更长

In 2021, a Northwestern University-led research team received a Defense Advanced Research Projects Agency (DARPA) contract worth up to $33 million to develop an implantable "living pharmacy" to control the human body's sleep/wake cycles. Now, the resea

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2023-11-21 13:16:50物质与能量
塑料条约必须从源头解决问题

The new Global Plastics Treaty must tackle the problem at source, researchers say.

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2023-11-21 13:16:49物质与能量
人脸如何教会机器人微笑

Robots able to display human emotion have long been a mainstay of science fiction stories. Now, Japanese researchers have been studying the mechanical details of real human facial expressions to bring those stories closer to reality.

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2023-11-21 13:16:48物质与能量
工程师正在执行故障查找任务

From vehicle collision avoidance to airline scheduling systems to power supply grids, many of the services we rely on are managed by computers. As these autonomous systems grow in complexity and ubiquity, so too could the ways in which they fail.

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2023-11-21 13:16:47物质与能量
锂金属电池的进步,为更安全、更强大的设备铺平了道路

The boom in phones, laptops and other personal devices over the last few decades has been made possible by the lithium-ion (Li-ion) battery, but as climate change demands more powerful batteries for electric vehicles and grid-scale renewable storage, lith

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2023-11-21 13:16:46物质与能量
微生物计数的新方法加快了研究,减少了浪费,可能会产生新的抗生素

University of Colorado Boulder researchers have developed a new way of counting microorganisms that works as much as 36 times faster than conventional methods, cuts plastic use more than 15-fold and substantially decreases the cost and carbon footprint of

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2023-11-21 13:16:46物质与能量
科学家利用量子生物学和人工智能提高基因组编辑工具

Scientists at Oak Ridge National Laboratory used their expertise in quantum biology, artificial intelligence and bioengineering to improve how CRISPR Cas9 genome editing tools work on organisms like microbes that can be modified to produce renewable fuels

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2023-11-21 13:16:45物质与能量
“室内太阳能”为物联网供电

From Wi-Fi-connected home security systems to smart toilets, the so-called Internet of Things brings personalization and convenience to devices that help run homes. But with that comes tangled electrical cords or batteries that need to be replaced. Now, r

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2023-11-21 13:16:44物质与能量
科学家警告不要依赖机械设备清除水体中的塑料

An international group of scientists has cautioned against reliance on mechanical cleanup devices as a means of addressing the plastic pollution crisis.

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2023-11-21 13:16:44物质与能量
化学家对合成聚合物的基本块进行成像

Synthetic polymers are everywhere in our society -- from nylon and polyester clothing to Teflon cookware and epoxy glue. At the molecular level, these polymers' molecules are made of long chains of monomer building blocks, the complexity of which increas

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