搜索结果: 1-15 共查到“国际动态 quality”相关记录28条 . 查询时间(0.546 秒)
Unexpected wildfire emissions impact air quality worldwide（图）
Unexpected wildfire emissionst air quality worldwide
2020/10/30
In lab studies of wildfire, nitrous acid seems to be a minor actor, often underrepresented in atmospheric models. But in the real-world atmosphere during wildfires, the chemical plays a leading role.I...
Water quality could be altered in buildings closed during COVID-19 pandemic（图）
quality altered buildings closed during COVID-19 pandemic
2020/4/29
While restaurants, gyms, schools and other buildings are closed indefinitely to prevent the spread of COVID-19, the quality of water left sitting in pipes could change.In buildings nationwide, water l...
Water quality could be altered in buildings closed during COVID-19 pandemic（图）
Water quality altered buildings closed during COVID-19 pandemic
2020/4/26
While restaurants, gyms, schools and other buildings are closed indefinitely to prevent the spread of COVID-19, the quality of water left sitting in pipes could change.
In buildings nationwide, water...
California's air quality regulations help farmers prosper（图）
California air quality regulations farmers prosper
2020/3/27
Farmers in California's Central Valley have seen a boost in the productivity of their high-value crops -- and greater earnings -- as a result of the Golden State's air pollution controls.Perennial cro...
Striking 20-year grasshopper declines tied to quality of prairie grasses（图）
20-year grasshopper declines tied quality prairie grasses
2020/3/13
A new study shows that grasshopper numbers have declined more than 30% in a Kansas grassland preserve over the past two decades. The results were published in the journal Proceedings of the Natio...
Scientists are refining our understanding of how light wavelengths affect the way plants develop their chloroplasts.Chloroplasts are the "engines" of plants. They use light from the sun and carbon dio...
Genetic modification of poplar trees saves air quality（图）
Genetic modification poplar trees air quality
2020/1/19
Poplar trees are widely used in commercial products, but, like several other tree species, they emit gases to the atmosphere that worsen air pollution and alter climate. Now field trials in Oregon and...
Clear Lakes Disguise Impaired Water Quality（图）
Clear Lakes Disguise Impaired Water Quality
2017/10/25
Look at a hundred lakes in the agricultural heartland of the United States and you will likely see green lakes surrounded by green fields. The nitrogen and phosphorus in agricultural fertilizers that ...
We’ve all experienced two hugely frustrating things on YouTube: our video either suddenly gets pixelated, or it stops entirely to rebuffer.Both happen because of special algorithms that break videos i...
Projected precipitation increases are bad news for water quality（图）
precipitation increases bad news for water quality
2017/9/1
Increased precipitation from a changing climate could pollute U.S. waterways with excess nitrogen, increasing the likelihood of severe water quality impairment from coast to coast, according to a new ...
More natural dust in the air improves air quality in eastern China
More natural dust air quality eastern China
2017/7/20
Man-made pollution in eastern China's cities worsens when less dust blows in from the Gobi Desert, according to a new study published May 11 in Nature Communications.Yes, you read that correctly: When...
Rutgers Engineers Use Microwaves to Produce High-Quality Graphene
Rutgers Engineers Microwaves High-Quality Graphene
2016/9/12
Rutgers University engineers have found a simple method for producing high-quality graphene that can be used in next-generation electronic and energy devices: bake the compound in a microwave oven.The...
NSF-supported engineer and vision scientist nets Emmy for tool to predict perceived video quality
NSF engineer vision scientist nets Emmy for tool predict perceived video quality
2015/10/13
Sometimes it's not so much what you see as what youdon't see that matters.Alan Bovik led a team of researchers that, in the early 2000s, invented a tool to predict how the average person will per...
Air Quality and Ozone Pollution Models for Forested Areas May Be Too Simple
Air Quality Ozone Pollution Models Forested Areas Too Simple
2015/10/13
A new study assessing the influence of species diversity of canopy trees on the amount of ozone precursors a forest emits suggests that atmospheric chemistry models in use now may underestimate the im...
Satellites can improve regional air quality forecasting
Satellites regional air quality forecasting
2015/3/4
Satellites planned for launch during the next several years may have an expanded role: Forecasting air-quality worldwide.The animation, constructed from data gathered by a South Korean geostationary s...