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Dec. 29, 2020 —Since patients with ballistic embedded fragments are frequently denied MRI (due to indeterminate bullet composition sans shell casings), radiography and CT can be used to identify nonferromagnetic ...
Dec. 26, 2022 —考古学家发现了弹点Idaho that are thousands of years older than any previously found in the Americas, helping to fill in the history of how early humans crafted and ...
Nov. 1, 2022 —On September 26, NASA's Double Asteroid Redirection Test (DART) spacecraft crashed into Dimorphos, a moonlet of the near-Earth asteroid Didymos, at 14,000 miles per hour. Prior to the impact, ...
Dec. 15, 2022 —In baseball, even the smallest detail can tip the scales in favor of the batter or the pitcher. A recent publication has highlighted how rosin powder helps maintain a more constant friction when ...
Aug. 18, 2023 —A new study has demonstrated that the atlatl (i.e. spear thrower) functions as an 'equalizer', a finding which supports women's potential active role as prehistoric ...
Aug. 4, 2022 —Only a handful of researchers have studied why an American football flies in such a unique trajectory, rifling through the air with remarkable precision, but also swerving, wobbling, and even ...
Dec. 29, 2020 —College football players may underestimate their risk of injury and concussion, according to a new ...
Nov. 16, 2022 —Women football players require specifically tailored products such as kit, boots, and balls in order to optimize their performance and safety on the pitch, according to a new ...
Sep. 9, 2020 —A new study posits that the major particle ejections off the near-Earth asteroid Bennu may be the consequence of impacts by small, sand-sized particles called meteoroids onto its surface as the ...
July 19, 2021 —Research has identified a new material that may lead to lightweight armor, protective coatings, blast shields and other impact-resistant ...