Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Mebrahtu, Tesfamariam"'
Autor:
Goitom Gebreyohannes Berhe, Desta Berhe Sbhatu, Samuel Estifanos Gebre, Kiros Hagos Abay, Genet Gebryohannes Mhretu, Gebrekidan Mebrahtu Tesfamariam, Samuel Alemayehu Lapiso, Mulugeta Sisay Cheru, Afewerk Gebre Meressa
Publikováno v:
International Journal of Chemical Engineering, Vol 2024 (2024)
Oxidative leaching is an inexpensive alternative to using chemical cyanide extraction methods for gold from low-grade gold sulfide. Oxidation of finely ground gold-bearing ore by Acidithiobacillus ferrooxidans was evaluated in terms of cell density,
Externí odkaz:
https://doaj.org/article/6907993f341b49319184b576efddfd66
Autor:
Gebretinsae Yeabyo Nigussie, Gebrekidan Mebrahtu Tesfamariam, Berhanu Menasbo Tegegne, Yemane Araya Weldemichel, Tesfakiros Woldu Gebreab, Desta Gebremedhin Gebrehiwot, Gebru Equar Gebremichel
Publikováno v:
International Journal of Photoenergy, Vol 2018 (2018)
We report in this paper antibacterial activity of Ag-doped TiO2 and Ag-doped ZnO nanoparticles (NPs) under visible light irradiation synthesized by using a sol-gel method. Structural, morphological, and basic optical properties of these samples were
Externí odkaz:
https://doaj.org/article/ce83745e4f354308ac1bf0a586498d36
Publikováno v:
International Journal of Science and Mathematics Education. 15:393-410
In theory, practical work is an established part of university-level chemistry courses. However, mainly due to budget constraints, large class size, time constraints and inadequate teacher preparations, practical activities are frequently left out fr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6de1d742a3994bedb41b6aa715953f2c
https://doi.org/10.1007/s10763-015-9700-z
https://doi.org/10.1007/s10763-015-9700-z
Autor:
Mengstu Etay Ashebir, Tesfakiros Woldu Gebreab, Gebrekidan Mebrahtu Tesfamariam, Gebretinsae Yeabyo Nigussie
Publikováno v:
Journal of Nanomaterials, Vol 2018 (2018)
We report the photocatalytic activities of ZnO, Ag-doped ZnO, and Mn-doped ZnO nanoparticles (NPs). Ag-doped and Mn-doped ZnO samples were synthesized using a coprecipitation method and calcined at 600°C. XRD, SEM, EDX, and UV-vis spectroscopy techn
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b8fc32f7b5c46d27905768812cf349a8
https://doaj.org/article/2abfb42c78564a65bd06223440d21bbc
https://doaj.org/article/2abfb42c78564a65bd06223440d21bbc
Akademický článek
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Autor:
Mebrahtu, Tesfamariam
No abstract available for this resource
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8dec3e1d70bb3d783742f3e312069e19
Autor:
Alem Mebrahtu Tesfamariam.
Hannover, Univ., Diss., 2006.
Externí odkaz:
http://edok01.tib.uni-hannover.de/edoks/e01dh06/520899628.pdf
http://deposit.ddb.de/cgi-bin/dokserv?idn=983242283
http://deposit.ddb.de/cgi-bin/dokserv?idn=983242283
Autor:
Wedajo, Wassihun, Schön, Thomas, Bedru, Ahmed, Kiros, Teklu, Hailu, Elena, Mebrahtu, Tesfamariam, Yamuah, Lawrence, Ängeby, Kristian, Werngren, Jim, Onyebujoh, Philip, Dagne, Kifle, Aseffa, Abraham
Publikováno v:
BMC Research Notes; 8/10/2014, Vol. 7, p1-8, 8p, 1 Color Photograph, 1 Diagram, 2 Charts, 2 Graphs
Autor:
Alem Mebrahtu Tesfamariam.
University, Diss., 2006--Hannover.
Externí odkaz:
http://edok01.tib.uni-hannover.de/edoks/e01dh06/520899628.pdf
http://deposit.d-nb.de/cgi-bin/dokserv?idn=983242283
http://deposit.d-nb.de/cgi-bin/dokserv?idn=983242283