Zobrazeno 1 - 10
of 87
pro vyhledávání: '"B. Onwona-Agyeman"'
Autor:
K.W. Kayang, E. Nyankson, J.K. Efavi, V.A. Apalangya, B.I. Adetunji, G. Gebreyesus, R. Tia, E.K.K. Abavare, B. Onwona-Agyeman, A. Yaya
Publikováno v:
Results in Physics, Vol 12, Iss , Pp 2100-2106 (2019)
Interactions between transition metal atoms, nickel, titanium, palladium and gold and (3,3), (4,2), (6,0) and (5,1) carbon nanotubes were studied using first principles calculations. The Fermi energy levels of the carbon nanotubes studied were found
Externí odkaz:
https://doaj.org/article/8ad1ac3d34f6422685223c9e1faf051b
Autor:
Kwame K. Marfo, David Dodoo-Arhin, Benjamin Agyei-Tuffou, Emmanuel Nyankson, David O. Obada, Lucas N.W. Damoah, Ebenezer Annan, Abu Yaya, B. Onwona-Agyeman, Mark Bediako
Publikováno v:
Case Studies in Construction Materials, Vol 12, Iss , Pp - (2020)
This work presents the effect of partially replacing metakaolin with Portland limestone cement to produce mortars for construction. Teleku Bokazo kaolin was explored as a SCM in the production of mortars. The hydration product between Portland limest
Externí odkaz:
https://doaj.org/article/6fe8faacb95849a19b57b9337e551b61
Publikováno v:
Advances in Materials Science and Engineering, Vol 2020 (2020)
The synergistic effects of transition metal based nanocomposites are known to possess enhanced antibacterial activities. However, in-depth analysis of the relative antibacterial performance of some of the prominent nanocomposites remains unavailable.
Externí odkaz:
https://doaj.org/article/231ab020f3c44b6385e02f20d4851616
Publikováno v:
AIMS Energy, Vol 6, Iss 6, Pp 949-958 (2018)
Dye-sensitized solar cells (DSCs) were prepared using porous zinc oxide (ZnO) films on aluminum-doped zinc oxide (AZO) and fluorine-doped tin oxide (FTO) transparent conductive glass substrates. X-ray diffraction measurements revealed that, the porou
Externí odkaz:
https://doaj.org/article/1d0bce4b26294728a0c5e3c13becbd9e
Autor:
J.K. Efavi, Dindomah Kanbogtah, V. Apalangya, E. Nyankson, E.K. Tiburu, D. Dodoo-Arhin, B. Onwona-Agyeman, A. Yaya
Publikováno v:
South African Journal of Chemical Engineering, Vol 25, Iss , Pp 98-102 (2018)
In this work, oil was extracted from Citrullus vulgaris (watermelon) seeds for potential feedstock in biodiesel production. The results showed that, the oil content from Citrullus vulgaris seeds oil during extraction reached an average yield of 50%.
Externí odkaz:
https://doaj.org/article/0a914c2cdb2e4fb9a5c590432988f324
Publikováno v:
Results in Materials, Vol 2, Iss , Pp 100029- (2019)
Ab initio calculations based on density functional theory was carried out to study the electronic properties of (3,3), (4,2), (5,2) and (6,0) boron nitride nanotubes when interacting with nickel, titanium, palladium and gold metal atoms. These intera
Externí odkaz:
https://doaj.org/article/915157ef36354f519c7e394c54f05080
Autor:
D. N. Liyanage, K. D. M. S. P. K. Kumarasinghe, G. R. A. Kumara, A. C. A. Jayasundera, K. Tennakone, B. Onwona-Agyeman
Publikováno v:
International Journal of Photoenergy, Vol 2019 (2019)
Dye-sensitized solid-state solar cells (DSSCs) replacing the liquid electrolyte with a p-type semiconductor have been extensively examined to solve the practical problems associated with wet-type solar cells. Here, we report the fabrication of a soli
Externí odkaz:
https://doaj.org/article/38d4dc7c4bf44139aef380601e714dc3
Autor:
B. Mensah, B. Agyei-Tuffour, E. Nyankson, Y. D. Bensah, D. Dodoo-Arhin, J. K. Bediako, B. Onwona-Agyeman, A. Yaya
Publikováno v:
International Journal of Polymer Science, Vol 2018 (2018)
The physico-mechanical properties of variable rubber blends including epoxide natural rubber (ENR), polybutadiene rubber (BR), and solution polymerized styrene-butadiene rubber (SBR) filled with silanized silica and carbon black mixtures were explore
Externí odkaz:
https://doaj.org/article/dbf314b546204e0e8d93d7848e9914fd
Autor:
A. Yaya, C.P. Ewels, J.K. Efavi, B. Agyei-Tuffour, K. Kan-Dapaah, B. Onwona-Agyeman, E.K.K. Abavare, Ali Hassanali, P.R. Briddon
Publikováno v:
Cogent Engineering, Vol 3, Iss 1 (2016)
We use a density functional theory approach under the local density approximation (DFT/LDA) to describe the formation of polybromide chain structures, their stretching frequency modes and charge transfer induced by the interaction of these molecules
Externí odkaz:
https://doaj.org/article/4274bbf428194b07a46becc9077b4561
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