2023-11-20 15:53:57科学与社会
具有骨骼、韧带和肌腱的印刷机器人

3D printing is advancing rapidly, and the range of materials that can be used has expanded considerably. While the technology was previously limited to fast-curing plastics, it has now been made suitable for slow-curing plastics as well. These have decisi

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2023-11-20 15:53:56科学与社会
藤壶可能有助于揭示失联的马来西亚航空公司MH370航班的位置

A University of South Florida geoscientist led an international team of researchers to create a new method that can reconstruct the drift path and origin of debris from flight MH370, an aircraft that went missing over the Indian Ocean in 2014 with 239 pas

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2023-11-20 15:53:55科学与社会
研究表明,气候工程可以减缓南极冰层的流失

Scattering sunlight-reflecting particles in the atmosphere could slow rapid melting in West Antarctica and reduce the risk of catastrophic sea-level rise, according to a study led by Indiana University researchers.

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2023-11-20 15:53:55科学与社会
科学家在实验室培育的皮肤上3D打印毛囊

A team led by scientists at Rensselaer Polytechnic Institute has 3D-printed hair follicles in human skin tissue cultured in the lab. This marks the first time researchers have used the technology to generate hair follicles, which play an important role in

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2023-11-20 15:53:55科学与社会
伴随着前所未有的耀斑,恒星尸体显示出生命迹象

After a distant star's explosive death, an active stellar corpse was the likely source of repeated energetic flares observed over several months -- a phenomenon astronomers had never seen before, a Cornell-led team reports in new research published Nov.

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2023-11-20 15:53:54科学与社会
澳大利亚轨迹显示,白垩纪早期,鸟类在南极附近活动

The discovery of 27 avian footprints on the southern Australia coast -- dating back to the Early Cretaceous when Australia was still connected to Antarctica -- opens another window onto early avian evolution and possible migratory behavior.

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2023-11-20 15:53:53科学与社会
恐龙灭绝后幸存的植物从空气中提取氮气

Once a favored food of grazing dinosaurs, an ancient lineage of plants called cycads helped sustain these and other prehistoric animals during the Mesozoic Era, starting 252 million years ago, by being plentiful in the forest understory. Today, just a few

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2023-11-20 15:53:53科学与社会
水生鳄鱼的多种进化轨迹

In the geological past, several groups of crocodiles evolved towards a morphology adapted to marine life. However, the extent of these adaptations and their evolutionary trajectories remained unknown. An exhaustive study of their morphology by a scientifi

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2023-11-20 15:53:52科学与社会
仅从音频片段和个人照片中创建的逼真的会说话的面孔

A team of researchers from Nanyang Technological University, Singapore (NTU Singapore) has developed a computer program that creates realistic videos that reflect the facial expressions and head movements of the person speaking, only requiring an audio cl

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2023-11-20 15:53:51科学与社会
没有科学证据表明纳勒迪人的认知高级行为和象征意义

A new study has cast doubt on claims that Homo naledi, a small-brained hominin dating to between 335-241,000 years ago, deliberately buried their dead and produced rock art in Rising Star Cave, South Africa.

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2023-11-20 15:53:51科学与社会
新化合物通过间接靶向钙通道而优于止痛药

A compound -- one of 27 million screened in a library of potential new drugs -- reversed four types of chronic pain in animal studies, according to new research led by NYU College of Dentistry's Pain Research Center and published in the Proceedings o

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2023-11-20 15:53:50科学与社会
一种可以帮助预测病毒爆发的人工智能工具

The COVID-19 pandemic seemed like a never-ending parade of SARS-CoV-2 variants, each equipped with new ways to evade the immune system, leaving the world bracing for what would come next.

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