Articles by Keyword: Beta

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We found 34 results for you
  1. Vegetation response to wagon wheel camp layouts

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    Wagon wheel camp layouts have been favoured, in some quarters, for rotational grazing due to the economy and convenience of having the camps radially arranged around central facilities. A possible disadvantage of such layouts is the tendency for over‐grazing near...
  2. Optimisation of transient transformation of a South African spring wheat cultivar with particle bombardment

    Optimisation of transient transformation of a South African spring wheat cultivar with particle bombardment

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Transient transformation was optimised for bread wheat, Triticum aestivum L. cv Kariega, using a particle inflow gun constructed at ARC-Roodeplaat. Excised immature embryos, cultured in vitro for 5 to 7 days, were bombarded with pAHC25 and analysed for the presence...
  3. Evaluation of soilless production systems for small scale production of two <em>Amaranthus</em> species and Swiss chard, <em>Beta vulgaris</em>

    Evaluation of soilless production systems for small scale production of two <em>Amaranthus</em> species and Swiss chard, <em>Beta vulgaris</em>

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    To improve the diet of rural families, small scale production of leafy vegetables, as a source of vitamin A and other nutrients should be encouraged. In this study, conducted under controlled environmental conditions (day temperatures in the greenhouse varied between...
  4. Some properties and expansions associated with the <em>q</em>-digamma function

    Some properties and expansions associated with the <em>q</em>-digamma function

    Item type: Journal Article • Journal: Quaestiones Mathematicae
    This paper is devoted to derive some properties and expansions associated with the q-digamma function. The Newton series which is consisting of terms of forward difference operator, is established for the q-digamma function. The maltiplication formula of the q-gamma function...
  5. Hilbert-type inequalities for Hilbert space operators

    Hilbert-type inequalities for Hilbert space operators

    Item type: Journal Article • Journal: Quaestiones Mathematicae
    In this paper we establish a general form of the Hilbert inequality for positive invertible operators on a Hilbert space. Special emphasis is given to such inequalities with homogeneous kernels. In some general cases the best possible constant factors are...
  6. Turnover patterns in fish versus macroinvertebrates — implications for conservation planning

    Turnover patterns in fish versus macroinvertebrates — implications for conservation planning

    Item type: Journal Article • Journal: African Journal of Aquatic Science
    Spatial patterns in taxonomic richness and turnover for fish and aquatic macroinvertebrates are compared to assess the relative usefulness of each taxonomic group in mapping biodiversity patterns. Fish and aquatic macroinvertebrate species data for sites down the longitudinal axes of...
  7. The Structure of Cellulose by Conformational Analysis.

    Item type: Journal Article • Journal: South African Forestry Journal
    Conformational analysis studies on the tertiary structure of cellobiose and methyl-β-cellobioside were carried out by using calculations of Van der Waals, H-bond, electrostatic and torsional energy interactions between the atoms and groups of the molecules. Energy maps in function of...
  8. The Structure of Cellulose by Conformational Analysis.

    Item type: Journal Article • Journal: South African Forestry Journal
    The Meyer/Misch and related models were found to be the most energetically stable for the crystalline structure of cellulose I. The cellobioside structure is the monomer of cellulose I as structures having cellobiose as monomer have been proven to be...
  9. A Note on The Estimation of Betas for Single Industry Companies

    A Note on The Estimation of Betas for Single Industry Companies

    Item type: Journal Article • Journal: De Ratione
    In order to use the Capital Asset Pricing Model to estimate the cost of equity capital for an unquoted firm, it is often necessary to use the “pure-play” technique to obtain a surrogate beta with an appropriate asset structure for...