concentration
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Environment
The mercury concentration in the tree ring may allow the tree to become a “witness” to illegal gold mining activities in the Amazon
Mining often occurs in artisans and small-scale mining operations that burn gold-mercury amalgams to extract gold particles. Credit: Simon Topp. For hundreds of years, Amazon has been misused for money. Today, precious metals are required in the same way, but the remaining small gold particles are much more difficult to find. Mining often occurs in artisans and small-scale mining operations…
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Chemistry
Thousands of small, time sensors that secure time can collectively map chemical concentration in a narrow tube.
The human intestinal system (A) can be represented as a series of plugflow reaction devices (B), a model that describes a chemical reaction in the flowing cylindrical system. Time recognition particles (C) pass through the plugflow system and detect interest chemicals known as analysis. Credit: Manion et al. , 2025. A diagram made partially in a violence. When synthesizing chemicals,…
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Environment
Elucidating the mechanism by which weather conditions cause changes in the concentration of fine particles in the atmosphere
Graphical summary. Credit: Atmospheric and Oceanic Science Letters (2024). DOI: 10.1016/j.aosl.2024.100586 A new study published in the journal Atmospheric and Oceanic Science Letters reports major advances in the study of the relationship between weather conditions and atmospheric particulate matter (PM2.5) concentrations. Air pollution is a major global issue, and PM2.5 is a serious pollutant. Fluctuations in PM2.5 concentration not only…
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