A Kitchener, Ont., teen has won the best project award for innovation at the Canada-Wide Science Fair. Eigenpulse: Eliminating Demographic Bias in Pulse Oximetry and Remote PPG from First Principles was the name of the project by Gurnoor Kaur, a Grade 11 student at Cameron Height Collegiate Institute in Kitchener. The judges at the Edmonton competition say the 17-year-old’s work fixes a 35-year-old problem in blood oxygen sensors, which has led to higher mortality in Black patients. She noticed on systems that monitored vital signs and detected oxygen, there can be a demographic bias, so on lighter skin patients, the error is lower than it is on darker skin patients. “There is a mathematical instability in current cardiac models and to be able to resolve that, you need to add a missing term,” she said. “I solved the mathematical instability and using that I was able to start to remove this demographic bias.” (via the CBC)
In 1920 doctors said eating canned salmon made prisoners in New York into human magnets
Dr. John B. Ransom, in a report sent to the Superintendent of Prisons, declared that thirty-two convicts of Clinton prison at Dannemora had been turned into human magnets as the result of a peculiar poisoning that had been baffling medical scientists for the last week or more. Dr. Ransom is the prison physician, and he called to his assistance in determining the mysterious ailment of the prisoners. They found that whenever any of the men touched steel sparks would fly and their finger tips would violently vibrate the filaments of electric bulbs. They traced the trouble to what is termed the deadly botulinus germ, which they believe came from canned salmon served to the men about two weeks ago. While knowing that this germ generates electricity, they are unable to understand how it turns the victims into human electrodes. (via the New York Times)
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