Articles by Author: B Tefera

Search results for B Tefera

We found 6 results for you
  1. A Wilf-Zeilberger Approach to Sums of Choi, Zörnig and Rathie

    A Wilf-Zeilberger Approach to Sums of Choi, Zörnig and Rathie

    Item type: Journal Article • Journal: Quaestiones Mathematicae
    In this paper we present elegant and elementary proofs of identities that involve sums of the type in the title using Zeilberger's algorithm and the Wilf-Zeilberger proof style.
  2. Rangeland degradation in semi-arid Swaziland: effects of dip-tanks on herbaceous vegetation and soil properties

    Rangeland degradation in semi-arid Swaziland: effects of dip-tanks on herbaceous vegetation and soil properties

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    This study investigated dip-tank use effects on herbaceous vegetation and soil, and relationships between environmental and species variables. Eight dip-tanks, three each in sandy (DPBS) and loamy (DYRL) soils, and two in stony (ROSG) soils were used. Data were collected...
  3. Chemical composition and <em>in vitro</em> ruminal fermentation of selected grasses in the semiarid savannas of Swaziland

    Chemical composition and <em>in vitro</em> ruminal fermentation of selected grasses in the semiarid savannas of Swaziland

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    Little is known about the grass species type, composition and nutritive value in the semiarid savannas that sustain most of Swaziland's cattle population through the seven-month-long dry season. This study was conducted to investigate the nutritional characteristics of grasses collected...
  4. Temporal and spatial dynamics of mineral levels of forage, soil and cattle blood serum in two semi-arid savannas of South Africa

    Temporal and spatial dynamics of mineral levels of forage, soil and cattle blood serum in two semi-arid savannas of South Africa

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    In this study, we examined temporal and spatial dynamics of minerals of forage, soil and cattle serum in two savannas (valley and plain) of South Africa. The aims were to explore the relationships between ecosystem components, and plan communal grazing...
  5. Effect of large weirs on abundance and diversity of migratory <em>Labeobarbus</em> species in tributaries of Lake Tana, Ethiopia

    Effect of large weirs on abundance and diversity of migratory <em>Labeobarbus</em> species in tributaries of Lake Tana, Ethiopia

    Item type: Journal Article • Journal: African Journal of Aquatic Science
    Lake Tana has a remarkable fish diversity, including 17 endemic Labeobarbus species, of which nine spawn in the inflowing rivers. Three of the migratory species are threatened, namely the endangered Labeobarbus macrophtalmus and the vulnerable L. acutirostris and L. platydorsus...
  6. Macro and trace elements of 26 browse species growing in semi-arid grazing lands of Eastern Cape, South Africa

    Macro and trace elements of 26 browse species growing in semi-arid grazing lands of Eastern Cape, South Africa

    Item type: Journal Article • Journal: African Journal of Range & Forage Science
    Leaves and twigs from woody plants provide essential nutrients to range animals. We examined variation in the mineral status of 26 woody species, and the influence of harvesting height as well as the interactions of the main effects on minerals...