Articles by Author: Paula Mendes

Search results for Paula Mendes

We found 16 results for you
  1. Assessment of aluminium tolerance in maize using a rapid screening procedure

    Assessment of aluminium tolerance in maize using a rapid screening procedure

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Routine testing for Al tolerance requires that screening procedures be both rapid and simple. Growth-chamber techniques, developed in the USA, show considerable promise in this regard and were used in this study to compare the Al tolerance of 10 maize...
  2. A field evaluation of the differential tolerance to soil acidity of forty-eight South African maize cultivars

    A field evaluation of the differential tolerance to soil acidity of forty-eight South African maize cultivars

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    A field experiment was conducted on a Normandien clay loam (Plinthic Paleudult) to compare the acid tolerance of 48 commercially grown maize (Zea mays L.) cultivars. Cultivars were compared in terms of grain yield, plant height and leaf Al content...
  3. <em>In vitro</em> regeneration of <em>Digitaria eriantha</em>

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    Embryogenic callus was obtained from immature regions of the leaf of Digitaria eriantha when grown in the dark on a MS medium supplemented with 1,0 or 2,0mg/dm3, 2,4‐D and 3–9 % sucrose. Plantlet regeneration occurred when the calli were transferred...
  4. On *-Essential Ideals and Biideals of Rings with Involution

    On *-Essential Ideals and Biideals of Rings with Involution

    Item type: Journal Article • Journal: Quaestiones Mathematicae
    Let R be a ring with involution *. We describe the structure of R, when R has no proper *-essential *-ideals (*-biideals) and also when R has a *-essential minimal *-biideal.
  5. SOME CHARACTERIZATIONS OF SUPERNILPOTENT AND HEREDITARILY IDEMPOTENT RADICAL CLASSES

    SOME CHARACTERIZATIONS OF SUPERNILPOTENT AND HEREDITARILY IDEMPOTENT RADICAL CLASSES

    Item type: Journal Article • Journal: Quaestiones Mathematicae
    If M is an arbitrary class of rings, then a ring R is called and M⁁-ring if and only if the following conditions hold:
  6. Community Psychology and Quality of Life in Tanzania

    Community Psychology and Quality of Life in Tanzania

    Item type: Journal Article • Journal: Journal of Psychology in Africa
    The purpose of this study was to explore the status of community psychology and its contribution to the quality of life in Tanzania. The study was based on both literature review and interviews. First, social responses to problems such as...
  7. Ascorbic acid losses in vegetables associated with cook-chill food preparation

    Ascorbic acid losses in vegetables associated with cook-chill food preparation

    Item type: Journal Article • Journal: South African Journal of Clinical Nutrition
    Objective. To assess ascorbic acid (AA) losses in four vegetables (broccoli, peas, cauliflower and cabbage) at each production stage in a cook-chill food service system.
  8. Interaction in research and the importance of exercising hospitality within the academic environment

    Item type: Journal Article • Journal:
    This article aims to discuss the relevance of the initiative of promoting the scientific event, the Academy of International Hospitality Research Conference 2014, held in Leeuwarden, Netherlands, in November 2014, and of its result – texts presented there were published...