Browsing Natural and Agricultural Sciences by Title

Browsing Natural and Agricultural Sciences by Title

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  • Landman, Marile; Van der Westhuizen, Belinda; Bezuidenhout, Daniela Ina; Liles, David C. (International Union of Crystallography, 2011)
    The title compound, (C21H25N2)[ReO4], was formed as the unexpected product in an attempted synthesis of a rhenium(I)–N-heterocyclic carbene (NHC) complex. The compound has crystallographic mirror symmetry with both the ...
  • Rademeyer, Melanie (International Union of Crystallography, 2011)
    Please read abstract in article.
  • Peters, Remco P.H.; Lilian, R.P.; Mutasa, B.; Railton, J.; Mongwe, W.; McIntyre, J.A.; Struthers, H.E. (Cambridge University Press (open access), 2016-09)
    South Africa’s paediatric antiretroviral therapy (ART) programme is managed using a monitoring and evaluation tool known as TIER.Net. This electronic system has several advantages over paper-based systems, allowing ...
  • Woodborne, Stephan M.; Hall, Grant; Robertson, Iian; Patrut, Adrian; Rouault, Mathieu; Loader, Neil R.; Hofmeyr, Michele (Public Library of Science, 2015-05-13)
    A proxy rainfall record for northeastern South Africa based on carbon isotope analysis of four baobab (Adansonia digitata L.) trees shows centennial and decadal scale variability over the last 1,000 years. The record is ...
  • Smith, G.F. (Gideon Francois), 1959-; Figueiredo, Estrela; Moore, Gerry (International Association for Plant Taxonomy, 2010-04)
    Article 36.1 in the International code of botanical nomenclature requires that, as from 1 January 1935, all names of new plant taxa (algae and fossils excepted) must be accompanied by a Latin description or diagnosis ...
  • Crous, Pedro W.; Wingfield, Michael J.; Hawksworth, David Leslie, 1946-; Cooper, Jerry A.; Hyde, Kevin D.; Iturriaga, Teresa; Kirk, Paul M.; Lumbsch, H. Thorsten; May, Tom W.; Minter, David W.; Misra, Jitendra K.; Norvell, Lorelei; Redhead, Scott A.; Rossman, Amy Y.; Seifert, Keith A.; Stalpers, Joost A.; Taylor, John W. (International Association for Plant Taxonomy, 2010-04)
    MycoBank is a fully online system whereby the proposers of new scientific names of organisms treated as fungi under the Code can deposit key information that becomes public and freely available on the worldwide web only ...
  • Cloete, T.E. (Thomas Eugene), 1958-; Wagner, Ankia Marleen (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 ...
  • Cukrowski, Ignacy; Adeyinka, Adedapo S.; Liles, David C. (International Union of Crystallography, 2012-07-02)
    The asymmetric unit of the title salt C8H22N4 2+2C7H5O2 , comprises two independent pairs of half a 2,2'-(piperazine-1,4- diyl)diethanaminium dication plus a benzoate anion. The dications are symmetrical and lie across ...
  • Slabbert, Cara (2011-10-31)
    Fusarium verticillioides (= Fusarium moniliforme) a common fungal contaminant of maize throughout the world has been associated with diseases in both man and animals. The structure of the fumonisins, a family of structurally ...
  • Chapwanya, Michael; Winstanley, H.F.; 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 ...
  • Cukrowski, Ignacy; Adeyinka, Adedapo S.; Liles, David C. (International Union of Crystallography, 2012-07-02)
    The asymmetric unit of the title salt, C6H20N4 2+ 2I , comprises half a 3,6-diazaoctane-1,8-diaminium dication plus an I anion. The dications are symmetrical and lie across crystallographic centres of inversion. In ...
  • Rademeyer, Melanie; Liles, David C. (International Union of Crystallography, 2010)
    A fundamental understanding of the role of oxyanion geometry on molecular packing and non-covalent interactions in salt crystal structures is central to the fields of both molecular recognition and crystal engineering. The ...
  • Wright, C.Y. (Caradee); Taljaard, Christine (Health and Medical Publishing Group, 2016-09)
    The International Agency for Research on Cancer (IARC) was founded on 20 May 1965. For the past 50 years, the IARC has served as the specialised cancer research unit of the World Health Organization. The IARC strives ...
  • Gemechu, Dibaba Bayisa; Debusho, Legesse Kassa; Haines, Linda M. (South African Statistical Association, 2015)
    Microarray experiments help scientists to study the expression level of thousands of genes simultaneously. These experiments have many design challenges, such as, for example, which mRNA samples should be co-hybridized ...
  • 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 ...
  • Reinhardt, Carl Frederick (Charlie) (Plaas Publishing, 2016-12)
    Daar is een fundamentele lewensproses wat alle lewende organismes onderhou en slegs in groen plante voorkom, naamlik fotosintese - 'n proses wat suurstof (O2) in die atmosfeer vrystel en koolstofdioksied (CO2) tydens die ...
  • 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 ...
  • 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. ...
  • 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 ...
  • Igumbor, Emmanuel; Mapasha, Refilwe Edwin; Meyer, W.E. (Walter Ernst) (Springer, 2016-10)
    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 ...