2025-05-10 20:27:46前沿信息
自组装十二面体纳米结构具有60个金属离子和肽配体

Controlling the topology and structure of entangled molecular strands is a key challenge in molecular engineering, particularly when attempting to create large nanostructures that mimic biological systems. Examples found in nature, such as virus capsids a

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2025-05-10 20:27:06动物植物
形态发生因子如何通过引导干细胞基因活动来指导早期大脑发育

Just a few weeks after conception, stem cells are already orchestrating the future structure of the human brain. A new Yale-led study shows that, early in development, molecular "traffic cops" known as morphogens regulate the activation of gene

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2025-05-10 20:17:03动物植物
菠菜抗菌肽有望对抗柑橘和土豆的作物病害

Texas A&M AgriLife Research scientists have developed a new approach to countering citrus greening and potato zebra chip diseases, two economically devastating agricultural diseases in the U.S.

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2025-05-10 20:15:08前沿信息
将超导纳米结构带入3D

The move from two to three dimensions can have a significant impact on how a system behaves, whether it is folding a sheet of paper into a paper airplane or twisting a wire into a helical spring. At the nanoscale, 1,000 times smaller than a human hair, on

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2025-05-10 20:04:09动物植物
惊人的下降:北美鸟类从其最繁荣的栖息地消失得最快

A study published in Science reveals that North American bird populations are declining most severely in areas where they should be thriving. Researchers from the Cornell Lab of Ornithology analyzed 36 million bird observations shared by birdwatchers to t

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2025-05-10 19:59:13前沿信息
稳定性解决方案使独特形式的碳更接近实际应用

Carbyne, a one-dimensional chain of carbon atoms, is incredibly strong for being so thin, making it an intriguing possibility for use in next-generation electronics, but its extreme instability causing it to bend and snap on itself made it nearly impossib

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2025-05-10 19:52:23动物植物
发电细菌的生存策略可能重塑生物技术和能源系统

A team led by Rice University bioscientist Caroline Ajo-Franklin has discovered how certain bacteria breathe by generating electricity, using a natural process that pushes electrons into their surroundings instead of breathing on oxygen.

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2025-05-10 19:44:23前沿信息
最近在纳米膜中实现的铁电拓扑结构能够实现光场操纵

Ferroelectrics are a class of materials that exhibit so-called spontaneous electric polarization, which is the separation of electric charges that can be reversed when an external electric field is applied to them. The dipole moments (i.e., pairs of equal

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2025-05-10 19:40:32动物植物
终极自我牺牲:细菌激活异常防御以逃避病毒攻击

For billions of years, viruses and bacteria have been embroiled in an arms race. In response to constant attacks by viruses known as bacteriophages—more commonly called "phages"—bacteria evolve new ways to defend themselves. And, in turn, phages

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2025-05-10 19:27:48动物植物
人工智能系统瞄准过敏背后的树花粉

Imagine trying to tell identical twins apart just by looking at their fingerprints. That's how challenging it can be for scientists to distinguish the tiny powdery pollen grains produced by fir, spruce and pine trees.

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2025-05-10 19:14:03动物植物
科学家们的发现颠覆了我们对细胞分裂方式的看法

Scientists from The University of Manchester have changed our understanding of how cells in living organisms divide, which could revise what students are taught at school. In a study published today in Science, the researchers challenge conventional wisdo

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2025-05-10 19:02:43动物植物
不寻常的繁殖策略可能会提高鲨鱼和鳐鱼的存活率

Joel Harrison Gayford, a marine biologist at James Cook University, in Australia, who specializes in research focused on chondrichthyan evolution and ecology, has published a paper in the journal Royal Society Open Science regarding two unusual forms of r

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