Singlet fission is a process where a single particle of light, a photon, can be split into two packets of energy, effectively doubling the electrical output when applied to technologies harnessing the ...

研究显示，在强烈路灯照射下的树木，其落叶时间比正常树木晚2-3周，这会使它们更容易遭受早霜冻害。因此，在城市规划中考虑植物的夜间需求，正在成为生态建设的新课题。在更深层的生物学层面，植物的夜间活动与基因表达密切相关。科学家通过转录组分析发现，植物基因组中有超过三分之一的基因表达呈现昼夜波动，这些"时钟基因"构成了复杂的调控网络，如同一个精密的生物计时器，指挥着各种生理过程的时序安排。这个内在计时器 ...

Iceland has no shortage of natural dangers – volcanic eruptions, glacial floods, scaldingly hot springs and bitterly cold winters. But it is at least one of the few places on Earth where humans don't ...

2025 年过半，中国汽车工程学会在 2024 年底发布的《2025 年度中国汽车十大技术趋势》正以超出预期的速度落地生根。这份历经 4 轮德尔菲调查、汇聚 113 家单位 405 位专家智慧的预判报告，精准捕捉到产业从 "概念探索" 向 "量产攻坚" 的关键转折。在第二十一届上海国际车展上，1308 台参展车辆中新能源车占比超七成，10 ...

海归学者发起的公益学术平台分享信息，整合资源交流学术，偶尔风月想象有一类“反着来”的发光分子：它们的激发单重态能级比三重态要低（能隙反转），等于把常见的洪特规则倒过来。这样一来，本来难利用的三重态激子就能更轻松地“爬回”单重态（利用反向系间窜越过程） ...

As we look ahead to the next decades, especially in light of the first global stock-take at COP28 and the declaration made by more than 30 countries to work towards tripling global nuclear energy capa ...

For many rural households in northern China, burning coal has long been the primary way to stay warm in winter, but it has also caused heavy air pollution and frequent safety hazards such as carbon ...

The verdict: A cloud-based website is less expensive than in-house servers at first but may cost more over time, even after ...