div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imageimg data-url=effect-of-oxygen-on-the-electron-spin-resonance-spectrum-of-diphenyl-picrylhydrazylhtmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: Effect of Oxygen on the Electron Spin Resonance Spectrum of αα′-Diphenyl-β-picrylhydrazyl loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader035vdocumentspubreader035viewer20220803205750680f1a28ab0f07ae678ehtml5thumbnails1jpg width=140 height=200 divp© Nature Publishing Group1958pdivdiv class=ts-pagebutton class=gotoPage data-page=2Page 2button div class=ts-imageimg data-url=effect-of-oxygen-on-the-electron-spin-resonance-spectrum-of-diphenyl-picrylhydrazylhtmlpage=2 data-page=2 class=ts-thumb lazyload alt=Page 2: Effect of Oxygen on the Electron Spin Resonance Spectrum of αα′-Diphenyl-β-picrylhydrazyl loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader035vdocumentspubreader035viewer20220803205750680f1a28ab0f07ae678ehtml5thumbnails2jpg width=140 height=200 divp© Nature Publishing Group1958pdiv