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  1. Variation in strength, stiffness and related wood properties in young South African-grown <em>Pinus patula</em>

    Variation in strength, stiffness and related wood properties in young South African-grown Pinus patula

    Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: C Brand Wessels --- Department of Forest and Wood Science, South Africa Francois S Malan --- Komatiland Forests, South Africa Daan G Nel --- Centre for Statistical Consultation, South Africa Tim Rypstra --- Department of Forest and Wood Science, South Africa
    The objective of this study was to examine the variation in and intercorrelation among wood properties determining the suitability of 16- to 20-year-old South African-grown Pinus patula trees for structural timber. A total of 1 112 sawn boards from 340...
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  2. The effect of pre-harvest wind damage on post-harvest quality of ‘Triumph’ persimmon fruit

    The effect of pre-harvest wind damage on post-harvest quality of ‘Triumph’ persimmon fruit

    Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Pesanai Zanamwe --- Department of Botany and Biotechnology, South Africa
    The post-harvest quality of ‘Triumph’ persimmon fruits grown in the Western Cape, South Africa varies with seasons. Poor post-harvest fruit quality is assumed to be associated with seasons that are characterized by violent wind occurrences. This study was carried out...
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  3. Twisted sums of <em>c</em> <sub>0</sub>(<em>I</em>)

    Twisted sums of c 0(I)

    Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Jessú M.F. Castillo --- Universidad de Extremadura, Instituto de Matemáticas Imuex, Spain Alberto Salguero Alarcón --- Universidad de Extremadura, Instituto de Matemáticas Imuex, Spain
    We study in this paper a few remarkable properties of twisted sums Z(κ, X) of c 0(κ) and a Banach space X. We first prove a representation theorem for such twisted sums from which we will obtain, among others, the...
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  4. Quasi-periodic solutions of some impulsive Duffing equations

    Quasi-periodic solutions of some impulsive Duffing equations

    Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Lu Chen --- Quzhou University, P.R. China
    In the present paper, we study the following Duffing equation
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