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Browsing Natural and Agricultural Sciences by Type "Postprint Article"
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Schonfeldt, H.C. (Hettie Carina); Hall, Nicolette Gibson; Pretorius, Beulah
(Elsevier, 2019-10)
Sport supplements classified as foods (and not as medicine) must contain specified amounts and qualities of protein before a prescribed list of health-benefit claims may be made on labels or in marketing activities. The ...
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Wagner, Ankia Marleen; Cloete, T.E. (Thomas Eugene), 1958-
(Elsevier, 2002)
The formation of a stable viscous foam on activated sludge aeration basin surfaces is a world wide problem. Foam is usually comprised of filamentous bacteria occurring predominantly in the mixed liquor. The lack of ...
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Bapela, Mahwahwatse Johanna; Heyman, Heino Martin; Senejoux. Francois; Meyer, Jacobus Johannes Marion
(Elsevier, 2019-01)
Please read abstract in the article.
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Dubois, Robert J.; Landee, Christopher P.; Rademeyer, Melanie; Turnbull. Mark M.
(Taylor and Francis, 2018)
Please read abstract in the article.
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Smart, Hiske; AlGhareeb, Ahmed Mohamed; Smart, Sally-Anne
(Lippincott, Williams and Wilkins, 2019-07)
BACKGROUND : The Kingdom of Bahrain has a high incidence of diabetes and associated foot complications. Simultaneously, low 25-hydroxyvitamin D (25[OH]D) levels are common in this population and may be associated with the ...
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Winstanley, H.F.; Chapwanya, Michael; Fowler, Andrew Cadle, 1953-; O’Brien, S.B.G.
(Springer, 2015-09)
We present a model of biofilm growth in a long channel where the biomass is assumed
to have the rheology of a viscous polymer solution. We examine the competition
between growth and erosion-like surface detachment due ...
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Ntumba, Patrice P.; Anyaegbunam, Adaeze Christiana
(Springer, 2011)
Building on prior joint work by Mallios and Ntumba, we study
transvections (J. Dieudonn´e), a theme already important from the classical
theory, in the realm of Abstract Geometric Algebra, referring herewith
to symplectic ...
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Mapasha, Refilwe Edwin; Ukpong, Aniekan M.; Chetty, Nithaya
(American Physical Society, 2012-05)
We present a comparative density functional study of the adsorption of hydrogen on bilayer graphene. Six different exchange-correlation functionals are employed to explore the possible configurations of hydrogen ad- sorption ...
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Mapasha, Refilwe Edwin; Molepo, Mahlanga P.; Chetty, Nithaya
(Elsevier, 2016-05)
We present a density functional study of various hydrogen vacancies located on a single hexagonal ring of graphane (fully hydrogenated graphene) considering the e ects of charge states and the position of the Fermi level. ...
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Mapasha, Refilwe Edwin; Chetty, Nithaya
(Elsevier, 2010-06)
We study Li on graphene using the Vienna ab initio Simulation Package employing the projector-augmented wave method within the generalized gradient approximation for the exchange-correlation potential. We give detailed ...
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Igumbor, Emmanuel; Mapasha, Refilwe Edwin; Meyer, Walter Ernst
(Springer, 2017-07)
The results of an ab initio modelling of aluminium substitutional impurity
(AlGe), aluminium interstitial in Ge [IAl for the tetrahedral (T) and hexagonal
(H) configurations] and aluminium interstitial-substitutional ...
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Ouma, C.N.M.; Meyer, Walter Ernst
(Elsevier, 2014-04)
Density functional theory (DFT) within the generalized gradient approximation (GGA) has been used to study the structural and electronic properties of
Eu3þ defect complexes in GaN under Ga-rich conditions. Two distinct ...
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Igumbor, Emmanuel; Omotoso, Ezekiel; Meyer, Walter Ernst
(Trans Tech Publications, 2017-06)
We present results of defect formation energies and charge state thermodynamic transition levels of Mg and Te interstitials in MgTe wurzite structure. We use the generalized gradient approximation and local density ...
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Igumbor, Emmanuel; Ouma, C.N.M.; Webb, Geoffrey; Meyer, Walter Ernst
(Elsevier, 2016-01)
In this work, we present ab-initio calculation results of Ge di-interstitials (I2(Ge)) in the framework of the density functional theory (DFT) using the Heyd, Scuseria, and Ernzerhof (HSE) hybrid functional. The formation ...
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Igumbor, Emmanuel; Obodo, Kingsley Onyebuchi; Meyer, Walter Ernst
(Trans Tech Publications, 2016)
We present detailed calculations of formation and thermodynamics transition state
energies of Mgi and Sei interstitial defects in MgSe using generalized gradient approximation
(GGA) and local density approximation (LDA) ...
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Vetrik, Tomas
(Springer, 2014-11)
Please read abstract in the article.
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Lutermann, Heike; Medger, Katarina; Horak, Ivan Gerard
(Wiley-Blackwell, 2012-09)
Ticks are important vectors of pathogens of medical and veterinary importance worldwide. Despite their economic importance our current knowledge about the factors affecting tick prevalence and abundance in tropical and ...
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Fru, Juvet Nche; Diale, M. (Mmantsae Moche)
(Elsevier, 2024-03)
Please read abstract in the article.
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Handavu, Ferdinand; Syampungani, Stephen; Sileshi, Gudeta W.; Chirwa, Paxie W.
(Taylor and Francis, 2021)
Please read abstract in the article.
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Akpomie, Kovo G.; Ezeofor, Chidinma Christiana; Olikagu, Chisom S.; Odewole, Olufemi A.; Ezeorah, Chigozie J.
(Springer, 2018-12)
Chemical modification of montmorillonite though popular may be expensive and environmentally noxious and can result in secondary contamination. Therefore, there is a need for eco-friendly and efficient treatment techniques. ...