2025-02-22 13:10:15动物植物
树木和灌木上奇怪的蓝色环揭示了过去寒冷的夏天,这可能是火山爆发造成的

Trees need a certain number of warm days in their growing seasons to grow properly; otherwise, the cell walls of new growth don't lignify properly, creating blue rings that appear when wood samples are dyed.

阅读全文
2025-02-22 12:55:30动物植物
自然特征和油气结构影响鲸鲨在海景中的运动

Whale sharks are drawn to natural underwater features such as seamounts and canyons as well as artificial features like offshore oil and gas platforms, with both acting as migratory "stepping stones," a new study published in the journal Diversi

阅读全文
2025-02-22 12:41:03动物植物
鉴定出可以去除微塑料的肽

Researchers have identified peptides that can help remove microplastics from the environment by combining biophysical modeling, molecular dynamics, quantum computing, and reinforcement learning. The ultimate goal of the work is peptide-based technologies

阅读全文
2025-02-22 12:30:20动物植物
简化蛋白质的重新设计可以提高配体结合

In biology, the binding of cellular proteins to molecules called ligands produces myriad functions essential for life, including cell signaling and enzymatic action. In biotechnology and medicine, the ability of researchers to alter proteins to refine con

阅读全文
2025-02-22 12:23:47前沿信息
二维材料中的畴壁涨落揭示了超导电性的新机制

Two-dimensional (2D) van der Waals are made of atomically thin layers, held together by weak van der Waals forces. These materials have been the focus of numerous studies, as their unique properties make them ideal for studying various exotic and rare phy

阅读全文
2025-02-22 12:15:52动物植物
逆转雄性果蝇与年龄相关的生育能力下降:精液的关键作用

As males age, their reproductive success typically declines. A study on fruit flies, led by University of Oxford researchers, has found that while old males do produce fewer offspring than young males, this is not because they have fewer sperm, but it is

阅读全文
2025-02-22 12:11:02前沿信息
问答:研究人员讨论脂质纳米颗粒疗法以阻止肿瘤生长并恢复肿瘤抑制

Yang Zhang, Ph.D., and Jinjun Shi, Ph.D., both of the Center for Nanomedicine and Department of Anesthesiology, Perioperative and Pain Medicine at Brigham and Women's Hospital, are co-senior authors of a paper published in ACS Nanoscience Au, titled &quo

阅读全文
2025-02-22 12:01:33动物植物
科学家们终于知道细胞是如何构建一个让它们迁移的结构的

Some of the body's cells stay put for life, while others are free to roam. To move, these migratory cells rely on filopodia—sensitive, finger-like protrusions that reach out from the cell membrane into the local environment. In a healthy cell, this can b

阅读全文
2025-02-22 12:00:37前沿信息
科学家开发用于光电技术的高抗冲击材料

Every day, people are reaping the benefits of work by scientists and engineers to make more effective X-ray machines, computers, cell phones and televisions. Florida State University researchers are pushing the boundaries of those technologies and develop

阅读全文
2025-02-22 11:49:38前沿信息
高度可调的生物模板方法扩展了纳米结构合成的选择

A joint research team has developed a biotemplating method that utilizes specific internal proteins in biological samples and has high tunability. The study is published in Advanced Science.

阅读全文
2025-02-22 11:47:29动物植物
实验室培养的肠道:蛋白质打印模拟人类肠道结构

An IBEC-led study describes the development of an innovative method to control the formation of crypt-like structures and villi in the intestine using a contact protein printing technique. This model will make it possible to study in detail key processes

阅读全文
2025-02-22 11:37:22动物植物
5000年来首次在埃及发现斑点鬣狗

A spotted hyena (Crocuta crocuta) has been found in South Eastern Egypt, the first recorded instance of the creature in this region for thousands of years.

阅读全文
 12650   首页 上一页 593 594 595 596 597 598 599 600 601 602 下一页 尾页