2024-08-28 10:54:20动物植物
科学家评估恐龙到底能长多大

A new study by Dr. Jordan Mallon of the Canadian Museum of Nature in Ottawa, Canada and Dr. David Hone of Queen Mary University of London, U.K., looks at the maximum possible sizes of dinosaurs. It is published in the journal Ecology and Evolution.

阅读全文
2024-08-28 10:52:22前沿信息
工程师设计了一种类似药物的纳米载体,以避开肺部的防线

A drug-carrying molecule designed to cure disease by slipping past the lung's natural defenses offers new hope for people with chronic or deadly respiratory diseases, say its creators, researchers in assistant professor Liheng Cai's Soft Biomatter Lab a

阅读全文
2024-08-28 10:41:51动物植物
研究表明,鸡用脸红的皮肤和羽毛蓬松来表现不同的情绪和兴奋程度

Hens fluff their head feathers and blush to express different emotions and levels of excitement, according to a study published July 24, 2024, in the open-access journal PLOS ONE by Cécile Arnould and colleagues from INRAE and CNRS, France.

阅读全文
2024-08-28 10:37:19前沿信息
研究人员展示了以前所未有的方式控制热辐射的超表面

Researchers with the Advanced Science Research Center at the CUNY Graduate Center (CUNY ASRC) have experimentally demonstrated that metasurfaces (two-dimensional materials structured at the nanoscale) can precisely control the optical properties of therma

阅读全文
2024-08-28 10:29:30动物植物
研究发现,科莫多龙的牙齿上覆盖着铁,可以杀死猎物

The fearsome Komodo dragon, native to Indonesia and the world's largest living lizard, has a coat of iron on its razor-like teeth to help it kill its prey, scientists found in a study published Wednesday.

阅读全文
2024-08-28 10:26:59前沿信息
脂质纳米粒mRNA治疗提高枫糖浆尿病小鼠模型的存活率

Researchers from the University of Pennsylvania, Perelman School of Medicine, Gene Therapy Program, and Moderna, have shown that repeated administration of lipid nanoparticle-encapsulated mRNA therapy significantly extended survival and reduced serum leuc

阅读全文
2024-08-28 10:19:06动物植物
带卫星发射器的雌性鲸鲨连续四年创纪录地迁徙

A team of researchers at the University of Rhode Island and Nova Southeastern University in Florida have been tracking a 26-foot endangered whale shark—named "Rio Lady"—with a satellite transmitter for more than four years—a record for whale sha

阅读全文
2024-08-28 10:12:00前沿信息
质量控制:整齐排列晶体生长,制作精细薄膜

Table salt and refined sugar look white to our eyes, but that is only because their individual colorless crystals scatter visible light. This feature of crystals is not always desirable when it comes to materials for optical and electrical devices, howeve

阅读全文
2024-08-28 10:06:50动物植物
科学家发表了新的甲烷产生生物群的第一个实验证据

A team of scientists from Montana State University has provided the first experimental evidence that two new groups of microbes thriving in thermal features in Yellowstone National Park produce methane—a discovery that could one day contribute to the deve

阅读全文
2024-08-28 10:01:13前沿信息
扭曲的分子线表现出高的单分子电导率

From the high-voltage wires that carry electricity over long distances, to the tungsten filaments in our incandescent lights, we may have become accustomed to thinking that electrical conductors are always made of metal. But for decades, scientists have b

阅读全文
2024-08-28 09:52:59动物植物
生物学家发现感染人类的寄生虫会产生像蚂蚁和白蚁一样的不育士兵

New research from scientists at UC San Diego's Scripps Institution of Oceanography finds a tiny freshwater parasite known to cause health problems in humans defends its colonies with a class of soldiers that cannot reproduce.

阅读全文
2024-08-28 09:46:49前沿信息
DNA技术首次同时提供数据存储和计算功能

Researchers from North Carolina State University and Johns Hopkins University have demonstrated a technology capable of a suite of data storage and computing functions—repeatedly storing, retrieving, computing, erasing or rewriting data—that uses DNA rath

阅读全文
 11855   首页 上一页 581 582 583 584 585 586 587 588 589 590 下一页 尾页