Articles by Author: Michael Mcgrady

Search results for Michael Mcgrady

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  1. Migration of a Peregrine Falcon <em>Falco peregrinus calidus</em> from Saudi Arabia to Cape Town as revealed by satellite telemetry

    Migration of a Peregrine Falcon <em>Falco peregrinus calidus</em> from Saudi Arabia to Cape Town as revealed by satellite telemetry

    Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology
    In boreal autumn 1995, we tracked a migrating adult Peregrine Falcon Falco peregrinus calidus from the border of Saudi Arabia and Yemen to near Cape Town, South Africa, a distance of 6 346 km. While on migration it covered 288 km d−1,...
  2. Book Review

    Book Review

    Item type: Journal Article • Journal: South African Journal of Philosophy
  3. Elucidation of seasonal pigmentation patterns in the involucral leaves of <em>Leucadendron</em> ‘Safari Sunset’

    Elucidation of seasonal pigmentation patterns in the involucral leaves of <em>Leucadendron</em> ‘Safari Sunset’

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    This study investigates seasonal pigmentation patterns found in the involucral leaves of Leucadendron ‘Safari Sunset’, with the long-term aim of colour manipulation. Treatments comprised deconed shoots and shoots in which the opening of the flower head was physically prevented. During...
  4. The function of regreening in yellow female <em>Leucadendron</em> (Proteaceae)

    The function of regreening in yellow female <em>Leucadendron</em> (Proteaceae)

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    What do female Leucadendron stand to gain by regreening their involucral leaves rather than discarding them after flowering? Regreening of involucral leaves could contribute to the carbon budget and/or protect the developing cone-shaped inflorescence during seed development. This was determined...
  5. Web-based teaching, learning and research using accessible real-time data obtained from field-based agrometeorological measurement systems<xref rid="FN0001"/>

    Web-based teaching, learning and research using accessible real-time data obtained from field-based agrometeorological measurement systems<xref rid="FN0001"/>

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    To enhance teaching and learning in agrometeorology and allied disciplines, a Web-based data and information system was developed. The system uses field-based agrometeorologcial measurements, from automatic weather, radiation and temperature stations, to collect and display near real-time and previous data...
  6. RESONANT PERTURBATIONS OF HIGHER-ORDER HARMONIC OSCILLATION

    RESONANT PERTURBATIONS OF HIGHER-ORDER HARMONIC OSCILLATION

    Item type: Journal Article • Journal: Quaestiones Mathematicae
    A higher-order extension of the perturbed Simple Harmonic Oscillator is discussed. The differential equation is