The poster invites the reader to “Enjoy These Winter Days” with an illustration of a peaceful snow-covered path lined with trees. It’s not simply an encouragement to admire the beauty of nature, ...
Abstract: To effectively deal with the problem of high noise and low signal-to-noise ratio (SNR) in the ultrasonic echo signal caused by mud pairs when the ultrasonic well logging instrument operates ...
Anthracite Mining Heritage Month will be marked throughout Northeastern Pennsylvania. A full calendar of regional events is available at and will be updated with ...
The wildcat gold mining boom that swept across the Amazon beginning in the 1970s left behind an environmental catastrophe of ...
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