搜索结果: 16-30 共查到“工学 water”相关记录860条 . 查询时间(0.575 秒)
Moving water and earth（图）
颗粒形状 河流恢复 海岸侵蚀
2023/6/19
As a river cuts through a landscape, it can operate like a conveyer belt, moving truckloads of sediment over time. Knowing how quickly or slowly this sediment flows can help engineers plan for the dow...
（2022 Water Res）固氮研究取得新进展（图）
生物固氮 Geobacter 厌氧土壤 电化学系统
2023/3/21
福建农林大学资源与环境学院周顺桂教授团队、刘星研究员在固氮研究中取得进展。目前，工业合成氨（固氮）主要途径是Haber-Bosch工艺，其生产条件需要高温高压，既耗能又污染环境（据估计，其年均能耗约占世界能源总耗的1-2%）。而生物固氮是一种自然界广泛存在的、既经济又环境友好的固氮方式，它通过微生物代谢产生的能量，在固氮酶的作用下在常温常压下高效固定N2。研究表明，地球固氮总量的50%来自于生物固...
Researchers create the first artificial vision system for both land and water（图）
人工视觉系统 提琴蟹眼 全景视野 合成视觉系统
2023/6/20
Giving our hardware sight has empowered a host of applications in self-driving cars, object detection, and crop monitoring. But unlike animals, synthetic vision systems can’t simply evolve under natur...
The boiling of water or other fluids is an energy-intensive step at the heart of a wide range of industrial processes, including most electricity generating plants, many chemical production systems, a...
Could used beer yeast be the solution to heavy metal contamination in water?（图）
啤酒酵母 重金属污染 非活性酵母
2023/6/19
A new analysis by researchers at MIT’s Center for Bits and Atoms (CBA) has found that inactive yeast could be effective as an inexpensive, abundant, and simple material for removing lead contamination...
As water restrictions tighten in Southern California in anticipation of summer, the Southwestern United States is seeing growing evidence of climate change and drought for millions of western resident...
Solar power is expected to reach 10 percent of global power generation by the year 2030, and much of that is likely to be located in desert areas, where sunlight is abundant. But the accumulation of d...
An electrochemical reaction that splits apart water molecules to produce oxygen is at the heart of multiple approaches aiming to produce alternative fuels for transportation. But this reaction has to ...
水系电解液重要研究进展：CO2诱导形成界面SEI膜实现 Water-in-Salt到Salt-in-Water转变（图）
CO2诱导 水系电解液 界面SEI膜 Water-in-Salt
2023/1/6
近年来，水系二次电池因为安全、绿色和低成本受到研究人员广泛关注，但受限于水系电解液电化学窗口窄，水系二次电池存在输出电压低，能量密度低，自放电高以及循环寿命差等问题，从而大大限制了其广泛应用。为了实现宽电位水系电解液，超高盐浓度Water-in-salt电解液被提出，通过提高盐浓度实现溶剂-离子相互作用调制降低水的电化学活性和实现SEI离子导体钝化膜，成功将水系电解液电化学窗口拓宽至3V及以上（S...
High-speed camera captures a water jet’s splashy impact as it pierces a droplet（图）
高速摄像机 水射流 注射药物
2023/6/19
Squirting a jet of water through a drop of liquid may sound like idle fun, but if done precisely, and understood thoroughly, the splashy exercise could help scientists identify ways to inject fluids s...
应SCI期刊Water（ISSN: 2073-4441）编辑部的邀请，山东大学环境研究院刘建教授受聘担任期刊的学术编委（2021年8月起），参与"Biodiversity and Functionality of Aquatic Ecosystems"方向的学术编辑工作。
Some kinds of water pollution, such as algal blooms and plastics that foul rivers, lakes, and marine environments, lie in plain sight. But other contaminants are not so readily apparent, which makes t...
Vapor-collection technology saves water while clearing the air（图）
蒸汽收集技术 净化空气 节约用水 发电厂 冷却塔
2023/6/19
About two-fifths of all the water that gets withdrawn from lakes, rivers, and wells in the U.S. is used not for agriculture, drinking, or sanitation, but to cool the power plants that provide electric...
Bright reflections observed at Mars’ south pole serve as evidence for water. But, seeing may be deceiving.
山东大学环境研究院刘建教授课题组于2021年7月在环境领域顶级期刊Water Research上发表了题为“The ecology of the plastisphere: Microbial composition, function, assembly, and network in the freshwater and seawater ecosystems”的研究论文，全面剖析了塑料际的微...