搜索结果: 1-15 共查到“air”相关记录1038条 . 查询时间(0.203 秒)
MIT engineers have synthesized a superabsorbent material that can soak up a record amount of moisture from the air, even in desert-like conditions.
Nearly 20 percent of today’s electricity in the United States comes from nuclear power. The U.S. has the largest nuclear fleet in the world, with 92 reactors scattered around the country. Many of thes...
Petro earns Air Force award to research next-gen spacecraft propellants（图）
佩特罗因 下一代 航天器 推进剂
2023/5/18
With the advancement of satellite propulsion systems will come a new age in space exploration, which is why the Air Force Office of Scientific Research has selected Elaine Petro, assistant professor o...
Using artificial intelligence, Cornell engineers have simplified and reinforced models that accurately calculate the fine particulate matter (PM2.5) – the soot, dust and exhaust emitted by trucks and ...
Electric cars – and their continued sales growth – are expected to have a greener, cleaner influence on air pollution and reduce human mortality in most, if not all, U.S. metropolitan areas, according...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Modeling normalcy-dominant ordinal time series: An application to air quality level
正态主导 有序时间序列 建模 空气质量水平
2023/5/10
Inspired by the study of air quality level data, we propose a new model for the normalcy-dominant ordinal time series. The proposed model is based on a new zero-one-inflated bounded Poisson distributi...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars： Modeling normalcy-dominant ordinal time series: An application to air quality level
正态主导 有序时间序列 建模 空气质量水平
2023/5/10
Inspired by the study of air quality level data, we propose a new model for the normalcy-dominant ordinal time series. The proposed model is based on a new zero-one-inflated bounded Poisson distributi...
Reaching carbon emission goals requires efforts on all fronts of carbon management: decreasing carbon emissions, capturing carbon, and storing carbon.
Lithium-air batteries were thought promising in the 1970s as a potential power source for electric vehicles, offering energy densities that rival gasoline and significantly surpass conventional lithiu...
Some engineers find inspiration in the mechanics of bird flight and the architecture of bee nests. Others think much smaller.
Watch female dragonflies wrestle away unwanted males in mid-air
female dragonflies fight mood
2021/8/10
When it comes to avoiding sexually aggressive males, some female dragonflies play dead. Others, according to a new study, wrestle the males away in midair.
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...
Hovering 100 meters above a densely populated urban residential area, the drone takes a quiet breath. Its goal is singular: to systematically measure air quality across the metropolitan landscape, pro...
Pandemic air quality due to weather, not just lockdowns ,study finds
meteorological pandemic air PM 2.5
2021/8/4
New research from Martin's lab, in collaboration with the Goddard Space Flight Center, California Institute of Technology and Dalhousie University in Nova Scotia, mapped PM2.5 levels across China, Eur...
Developing countries pay steep economic and health costs because of high car air pollution
car air pollution economic development developing countries GDP
2021/8/4
Some of the world's most vulnerable cities suffer disproportionate economic losses because of the health consequences of in-car air pollution, finds a new study.