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China recovers 98% of gold from old phones in 20 minutes, cheaply

Chinese researchers say they can now strip almost all the gold out of discarded phones and circuit boards in the time it ...
IEEE

A New Method for Estimating Signal-to-Noise Ratio in UAV Hyperspectral Images Based on Pure Pixel Extraction

Abstract: Signal-to-noise ratio (SNR) is an important radiation characteristic parameter for remote sensing image quality assessment as well as a key performance indicator for remote sensing sensors.
Interesting Engineering

Chinese scientists recover 98% of gold from old phones in 20 minutes at low cost

Chinese scientists have developed a rapid e-waste mining method that extracts gold in under 20 minutes at around one-third of ...
Tech Xplore

Coal tailings could solve United States' need for rare earth elements

Rare earth elements are an easy-to-find, hard-to-refine resource critical for everything from magnets and electronics to ...

At US$1,455 per ounce, China’s e-waste gold recovery is world’s most efficient

New method can extract precious metals from old mobile phones, computers and home appliances in less than 20 minutes.
IEEE

River Extraction Method of Remote Sensing Image Based on Edge Feature Fusion

Abstract: The extraction of rivers from remote sensing images is crucial for urban planning and water resource utilization. To address the low accuracy of traditional methods for extracting rivers ...