?url_ver=Z39.88-2004&rft_id=10.1016%2Fj.jclepro.2021.128303&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Al-Kayiem&rft.au=Al-Kayiem%2C+H.H.&rft.aufirst=H.H.&rft.atitle=Performance+enhancement+of+solar+vortex+power+generator+by+Al2O3-in-black+paint+coating&rft.volume=316&rft.title=Journal+of+Cleaner+Production&rft.issn=09596526&rft.date=2021&rft.genre=article