搜索结果: 1-15 共查到“理学 Temperatures”相关记录145条 . 查询时间(0.225 秒)
Using a precisely tuned, ultrafast laser, a Cornell researcher showed that the atomic structure of yttrium titanate could be changed to stabilize its magnetism at temperatures three times higher than ...
Highest-resolution measurements of asteroid surface temperatures ever obtained from Earth
asteroid belt solar system surface temperature
2021/8/9
A close examination of the millimeter-wavelength emissions from the asteroid Psyche, which NASA intends to visit in 2026, has produced the first temperature map of the object, providing new insight in...
Study of global climate-related mortality links five million deaths a year to abnormal temperatures
abnormal temperature global warming climate change death
2021/8/4
Researchers recently discovered that the ability of agricultural grasses to withstand drought is directly related to the health of the microbial community living on their stems, leaves and seeds.
New findings to boost barley yields at higher temperatures
higher temperature barley yield gene editing environmental condition
2021/8/4
Researchers have identified a novel mechanism in barley plants, which could help crop growers achieve high yields as temperatures rise.
New 'refrigerator' super-cools molecules to nano-Kelvin temperatures（图）
New refrigerator super-cools molecules nano-Kelvin temperatures
2020/4/17
For years, scientists have looked for ways to cool molecules to ultracold temperatures, at which point the molecules should slow to a crawl, allowing scientists to precisely control their quantum beha...
Hot climates to see more variability in tree leafing as temperatures rise（图）
Hot climates variability tree leafing temperatures rise
2020/2/20
Scientists have found that while all regions of the country can expect an earlier start to the growing season as temperatures rise, the trend is likely to become more variable year-over-year in hotter...
Correcting historic sea surface temperatures reveals simpler pattern of ocean warming（图）
sea surface temperatures simpler pattern ocean warming
2019/10/23
Something odd happened in the oceans in the early 20th century. The North Atlantic and Northeast Pacific appeared to warm twice as much as the global average. Atmospheric and oceanic models have had t...
Genetic differences in eggshell ultrastructural properties of Saudi native chicken breeds kept at high ambient temperatures
eggshell strength egg quality mammilliary layer total score
2018/11/23
Egg quality and eggshell ultrastructural properties of four Saudi native chicken breeds were compared to detect genetic differences. A total of 480 laying hens at 28 weeks of age, representing four Sa...
UChicago scientists see fireworks from atoms at ultra-low temperatures（图）
UChicago scientists fireworks atoms ultra-low temperatures
2017/11/23
Scientists aren’t normally treated to fireworks when they discover something about the universe. But a team of University of Chicago researchers found a show waiting for them at the atomic level—along...
Analyzing magma temperatures may help get closer to forecasting volcanic eruptions
temperatures volcanic eruptions
2017/7/21
Although volcanic eruptions are often quite hazardous, scientists have been unable to pinpoint the processes leading up to major eruptions – and one important limitation has been a lack of knowledge a...
Electrolytes Made from Liquefied Gas Enable Batteries to Run at Ultra-low Temperatures
Electrolytes Liquefied Gas Batteries to Run Ultra-low Temperatures
2017/7/21
Engineers at the University of California San Diego have developed a breakthrough in electrolyte chemistry that enables lithium batteries to run at temperatures as low as -60 degrees Celsius with exce...
Warmer temperatures cause decline in key runoff measure
Warmer temperatures decline runoff measure
2017/7/20
Since the mid-1980s, the percentage of precipitation that becomes streamflow in the Upper Rio Grande watershed has fallen more steeply than at any point in at least 445 years, according to a new study...
Rising Temperatures Threaten Stability of Tibetan Alpine Grasslands
Rising Temperatures Threaten Alpine Grasslands
2017/7/20
A warming climate could affect the stability of alpine grasslands in Asia’s Tibetan Plateau, threatening the ability of farmers and herders to maintain the animals that are key to their existence, and...
Ecology team finds leaf litter has slower decomposition rate in warm temperatures than previously estimated
Ecology team leaf litter slower decomposition rate warm temperatures previously estimated
2017/7/19
The time it takes for a leaf to decompose might be the key to understanding how temperature affects ecosystems, according to Kansas State University ecologists. Using leaf litter data in streams from ...
Rising water temperatures endanger health of coastal ecosystems,study finds
Rising water temperatures endanger health coastal ecosystems
2017/4/27
Increasing water temperatures are responsible for the accumulation of a chemical called nitrite in marine environments throughout the world, a symptom of broader changes in normal ocean biochemical pa...