☀️همسه صباحية☀️
القرآن حبل نازل
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قال ﷺ:
(كتاب اللَّه حبل ممدود من السماإلى الأرض)
صباح كثرة
تلاوة القرآن
Metal-tip-based electron sources are constrained by a trade-off between energy spread and pulse width. Here the authors report a carbon-nanotube-based electron source with a 0.3-eV energy spread and an electron pulse width of about 13 fs.
https://t.co/U3pMGKcmEl
This Call for Papers seeks to showcase recent developments in machine learning and their applications in computational and/or experimental research on nanocatalysts for energy conversion.
Submit your manuscript by October 31, 2025.
Learn more 👉 https://t.co/lDaF1Qw4Gl