科学与环境
Open database tracks Earth's water cycle by standardizing decades of satellite data
来源: Phys.org - latest science and technology news stories · 发布于
All water comes from somewhere. Researchers who want to know where it comes from rely on water isotopes, variants of water molecules with slightly different masses, as location identifiers. In particular, the specific ratio of heavy to light water isotopes is unique to the water'
All water comes from somewhere. Researchers who want to know where it comes from rely on water isotopes, variants of water molecules with slightly different masses, as location identifiers. In particular, the specific ratio of heavy to light water isotopes is unique to the water's origin and processes it has undergone and can provide information on how water travels across the globe.
相关报道
The way Earth's 'thermostat' works may have changed during Pangea era
Life arose on Earth at least 3.5 billion years ago, and our planet has remained habitable ever since—not too hot, not too cold. These life-sustaining conditions are possible in part thanks to a built-in, carbon cycle–based climate "thermostat" that controls the amount of carbon d
Phys.org - latest science and technology news stories ·
A 'simple recipe' takes some of the guesswork out of mass spectrometry imaging
A small sample of human tissue can hold a remarkable amount of information. Researchers can use it to search for molecular clues associated with cancer, investigate the chemical landscape of the brain or determine where a drug travels after it enters the body. Mass spectrometry i
Phys.org - latest science and technology news stories ·
Counteranion captures reactants to boost light-driven chemistry in dilute solutions
Researchers at Kyushu University have developed a photocatalytic system that can selectively capture reacting molecules and hold them close to the active sites that absorb energy from light. This innovation addresses a long-standing challenge of having the photocatalyst maintain
Phys.org - latest science and technology news stories ·
Do spiders dream? Scientists just found a surprising clue
Scientists have discovered that spiders may sleep in ways surprisingly similar to humans, complete with distinct sleep stages and a dream-like REM state. Researchers at the University of Bonn studied the Australian jumping spider Portia fimbriata, a remarkably clever hunter known
All Top News -- ScienceDaily ·
Scientists discover a surprising clue to why some brains resist Alzheimer’s
Why do some people stay mentally sharp even when their brains show signs of Alzheimer’s disease? Scientists in the Netherlands may have uncovered an important clue hidden in a rare group of immature brain cells. Researchers discovered that these cells remain present even in peopl
All Top News -- ScienceDaily ·