Articles by Author: Christopher Nel

Search results for Christopher Nel

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  1. Characterisation of alkaline tailings from a lead/zinc mine in South Africa and evaluation of their revegetation potential using five indigenous grass species

    Characterisation of alkaline tailings from a lead/zinc mine in South Africa and evaluation of their revegetation potential using five indigenous grass species

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Tailings from a lead/zinc (Pb/Zn) mine were characterised and their revegetation potential investigated under glasshouse conditions using five grass species with three rates of inorganic fertiliser. The tailings were alkaline with low nutrient concentrations but high total and extractable Zn...
  2. Superposition operators between weighted spaces of analytic functions

    Superposition operators between weighted spaces of analytic functions

    Item type: Journal Article • Journal: Quaestiones Mathematicae
    We study the existence and the continuity of superposition operators between weighted spaces of holomorphic functions in terms of the weights.
  3. Beyond Reasonable Doubt – a paradox of ideological immunity

    Beyond Reasonable Doubt – a paradox of ideological immunity

    Item type: Journal Article • Journal: South African Journal of Philosophy
    Ideology criticism, like scepticism, calls into question the objective or justified status of beliefs. However, where scepticism only refutes, and never puts forward, a substantive claim about anything, the ideology critic must maintain some criterion for distinguishing ideas which support...
  4. Validation of the Values in Action Inventory of Strengths for Youth (VIA-Youth) Among South African learners

    Validation of the Values in Action Inventory of Strengths for Youth (VIA-Youth) Among South African learners

    Item type: Journal Article • Journal: Journal of Psychology in Africa
    This study investigated the reliability and validity of the Values in Action Inventory for Youth (VIA-Youth) of Park and Peterson (2006) in a total multi-cultural group of South African learners aged 13 to 17 years (N=1691: male = 703, female...
  5. Employability, Emotional Intelligence and Career Preparation Support Satisfaction among Adolescents in the School-to-work Transition Phase

    Employability, Emotional Intelligence and Career Preparation Support Satisfaction among Adolescents in the School-to-work Transition Phase

    Item type: Journal Article • Journal: Journal of Psychology in Africa
    This study explored the relationship between the employability and career support satisfaction and emotional intelligence of a convenience sample of predominantly black (N = 590) South African adolescents (mean age 17, males 43%, females 57%). Data were collected using the...
  6. REAL COMPACTIFICATIONS THROUGH ZERO-SET SPACES

    REAL COMPACTIFICATIONS THROUGH ZERO-SET SPACES

    Item type: Journal Article • Journal: Quaestiones Mathematicae
    The Alexandroff (= zero-set) spaces were introduced in [l] as the “completely normal spaces”, and have been studied in a number of more recent papers. In this paper we unify the theory of Wallman realcompactifications via the Alexandroff bases and...