Articles by Author: Barry G Muller

Search results for Barry G Muller

We found 57 results for you
  1. Variation in selected solid wood properties of young <em>Pinus patula</em> from diverse sites in the Mpumalanga escarpment area in South Africa

    Variation in selected solid wood properties of young <em>Pinus patula</em> from diverse sites in the Mpumalanga escarpment area in South Africa

    Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science
    Regression analyses identified ‘Growth Days’ (an index expressing site moisture availability) as the only site variable contributing significantly to the prediction to wood density (R2 = 0.57), whereas the model predicting grain angle included only ‘Altitude’ (R2 = 0.60). These...
  2. JOINT SPECTRAL SETS

    JOINT SPECTRAL SETS

    Item type: Journal Article • Journal: Quaestiones Mathematicae
    We consider the problem: if S,TEB(H) are commuting operators with von Neumann spectral sets X and Y respectively, does it imply that X x Y is a joint spectral set for the pair (S,T)?
  3. QUOTIENTS OF 2-SUMMING ALGEBRAS

    QUOTIENTS OF 2-SUMMING ALGEBRAS

    Item type: Journal Article • Journal: Quaestiones Mathematicae
    A result of A.M. Mantero and A. Tonge is strengthened by giving an example of a commutative operator algebra which is semisimple but which is not the quotient algebra of a 2-summing Banach algebra by a closed ideal.
  4. A GIS for the management of fisheries in West Africa: preliminary application to the octopus stock in Senegal

    A GIS for the management of fisheries in West Africa: preliminary application to the octopus stock in Senegal

    Item type: Journal Article • Journal: South African Journal of Marine Science
    A preliminary application of a Geographical Information System (GIS), based on a georeferenced database including data from commercial fishing and oceanographic surveys, and on geographical objects describing the physical and juridical environment, trawl operations and artisanal fishing sites, is presented...
  5. <em>In vitro</em> organic matter disappearance of tanniferous browse using rumen liquid from goats ingesting grass versus browse

    <em>In vitro</em> organic matter disappearance of tanniferous browse using rumen liquid from goats ingesting grass versus browse

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    In vitro organic matter disappearance (IVOMD) of African browse species often indicates artificially low nutritive value due to the presence of condensed tannins (CT). Diet of the rumen liquor donor may change this if it contains CT. Leaves from 11...
  6. Perceptions of climate change and barriers to adaptation amongst commonage and commercial livestock farmers in the semi-arid Eastern Cape Karoo

    Perceptions of climate change and barriers to adaptation amongst commonage and commercial livestock farmers in the semi-arid Eastern Cape Karoo

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    Climate change is expected to adversely affect agriculture in South Africa. A rise in variable and unfavourable conditions is likely to surpass the limits of current coping mechanisms of farmers, compelling them to implement more resilient adaptive measures to decrease...
  7. Guidelines for Counsellors Working with People of African Ancestry in a Sport Context

    Guidelines for Counsellors Working with People of African Ancestry in a Sport Context

    Item type: Journal Article • Journal: Journal of Psychology in Africa
    The objective this article is to describe five practice guidelines for counsellors working with people of African ancestry in a sport context. The practice guidelines pertain to counsellor training, counsellor perspectives, counsellor services, counsellor ethics and counsellor research. These practice...
  8. The Factor Structure and Reliability of a Six-Item Sense of Coherence Measure

    The Factor Structure and Reliability of a Six-Item Sense of Coherence Measure

    Item type: Journal Article • Journal: Journal of Psychology in Africa
    The study investigated the factor structure and reliability of a six-item sense of coherence (SOC) measure. Participants were a South African white collar employee sample (n=7185) purposively selected from over 300 different companies across various business sectors. The sample constituted...