Sheet masks have taken the skincare world by storm, and for good reason - they deliver a powerful boost of hydration and ...

Abstract: Identical weak optical fiber Bragg grating (FBG) arrays can be fabricated in-line on a draw tower using the phase mask technique. On the FBG arrays, some grating spectrum distortions, for ...

Tokyo, Japan—The COVID-19 pandemic increased public awareness of the importance of mask use for personal protection ... are suitably sized to allow the easy passage of the small gas molecules ...

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