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18 de ene. de 2021 · The green light. Modern smartwatches use a flashing green light to measure your heart rate from your wrist. Spectroscopy tells us that blood absorbs green light because red and green are opposite each other on the colour wheel. The rear of the smartwatch contains an optical sensor to detect the reflected light.
25 de oct. de 2018 · Still, the data trove has enabled Science, working with Retraction Watch, to gain unusual insight into one of scientific publishing's most consequential but shrouded practices. Our analysis of about 10,500 retracted journal articles shows the number of retractions has continued to grow, but it also challenges some worrying ...
28 de dic. de 2023 · New trends to watch include the accelerated expansion of green chemistry, the clinical validation of CRISPR, the rise of biomaterials, and the renewed progress in treating the undruggable, from cancer to neurodegenerative diseases.
NEJM Journal Watch reviews over 250 scientific and medical journals to present important clinical research findings and insightful commentary
Hace 4 días · The Medtronic cryoballoon ablation system for atrial fibrillation (AF) had no competitors until the Boston Scientific balloon became available in 2020 and received FDA approval in 2023. Previous nonrandomized studies have suggested better outcomes with the newer balloon. Now, investigators report findings of the first randomized, head-to-head ...
