Articles by Author: J Harvey

Search results for J Harvey

We found 16 results for you
  1. T<sub>0</sub>-SEPARATION IN TOPOLOGICAL CATEGORIES

    T<sub>0</sub>-SEPARATION IN TOPOLOGICAL CATEGORIES

    Item type: Journal Article • Journal: Quaestiones Mathematicae
    R.-E. Hoffmann [5,6] has introduced the notion of an (E,M)-universally topological functor, which provides a categorical characterization of the T0-separation axiom of general topology. In this paper, we characterise these functors in terms of the unique extension of structure functors...
  2. THE FUNDAMENTAL GROUP IN FIBRATIONS

    THE FUNDAMENTAL GROUP IN FIBRATIONS

    Item type: Journal Article • Journal: Quaestiones Mathematicae
    A generalized Mayer-Vietoris sequence involving crossed homomorphisms is established and the construction is applied to the homotopy sequence of the CW-pair (X.X1) to relate the homotopy sequences of (X.X1) and the fibre bundle F → E → X in low...
  3. The Role Of Pharmacotherapy In Child And Adolescent Psychiatry: Introducing the Western Cape Child and Adolescent Psychopharmacology Group

    The Role Of Pharmacotherapy In Child And Adolescent Psychiatry: Introducing the Western Cape Child and Adolescent Psychopharmacology Group

    The use of psychotropic agents in children is poorly reported in the scientific literature. As a result, inexperience with the use of these agents, together with resistance from parents, remains a therapeutic dilemma for the clinician who is called on...
  4. Pharmacotherapy Of Selective Mutism: Two Case Studies Of Severe Entrenched Mutism Responsive To Adjunctive Treatment With Fluoxetine

    Pharmacotherapy Of Selective Mutism: Two Case Studies Of Severe Entrenched Mutism Responsive To Adjunctive Treatment With Fluoxetine

    Selective mutism is a rare psychiatric disorder of unknown aetiology that usually has its onset in early childhood. It appears to be a childhood variant of social phobia, panic or separation anxiety disorder. While the cornerstones in the treatment of...
  5. Sneaking under the toxin surveillance radar: parasitism and sterol content

    Sneaking under the toxin surveillance radar: parasitism and sterol content

    Item type: Journal Article • Journal: African Journal of Marine Science
    Parasitic dinoflagellates of the genus Amoebophrya infect and kill bloom-forming dinoflagellates, including the toxic species Karlodinium micrum. Strains of K. micrum produce cytotoxic compounds (KmTX) that render cell membranes permeable to a range of small ions and molecules, resulting in...
  6. Species specificity and potential roles of <em>Karlodinium micrum</em> toxin

    Species specificity and potential roles of <em>Karlodinium micrum</em> toxin

    Item type: Journal Article • Journal: African Journal of Marine Science
    Karlodinium micrum is a toxic mixotrophic dinoflagellate that has been responsible for fish kills in coastal environments worldwide. The role that karlotoxins play in the life history of K. micrum is unknown, but may contribute to its bloom-forming ability. We...
  7. Variation in seed rain from <em>Widdringtonia whytei</em> growing in different conditions on Mulanje Mountain in Malawi

    Variation in seed rain from <em>Widdringtonia whytei</em> growing in different conditions on Mulanje Mountain in Malawi

    Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science
    Mulanje Mountain is one of the examples of tropical montane landscapes with plant populations varying in size from small fragments of less than 1 ha to riverine strips and stands of more than 100 ha. Seed availability is a potential...