Articles by Keyword: Gift Sex Exchange

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  1. “Giving God his due?” Understanding tithing and its function within the Seventh-Day Adventist Church

    “Giving God his due?” Understanding tithing and its function within the Seventh-Day Adventist Church

    Item type: Journal Article • Journal: Anthropology Southern Africa
    This paper focuses on the practice of tithing as an extraordinary form of religious giving. Tithing involves habitually giving ten percent of one's income to the church, and since this is such a significant portion of a person's income, its...
  2. Love matters: exploring conceptions of love in Rwanda and Swaziland and relationship to HIV and intimate partner violence

    Love matters: exploring conceptions of love in Rwanda and Swaziland and relationship to HIV and intimate partner violence

    Item type: Journal Article • Journal: African Journal of AIDS Research
    Health risks such as intimate partner violence (IPV) and HIV infection often occur within intimate sexual relationships, yet the study of love and intimacy is largely absent from health research on African populations. This study explores how women and men...
  3. Relations between soil factors and herbage yields of natural grassland on sandy soils in the south‐eastern Transvaal

    Item type: Journal Article • Journal: Journal of the Grassland Society of Southern Africa
    Forty systematically‐placed observation points were established in a 1.5‐ha area of floristically unifoim veld in which productivity varied spatially. At each point grass yields were determined by harvesting quadrats at eight‐week intervals during the growing season, and the volumetric water...
  4. Relationship between cation exchange capacity, clay content and water retention of Highveld soils

    Relationship between cation exchange capacity, clay content and water retention of Highveld soils

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Water in the soil is held by capillary and adsorption forces. These forces are mainly a function of clay content and mineralogy. To neglect the influence of clay mineralogy when estimating the water-holding properties of soil, implies that only a...
  5. Measurement of exchangeable aluminium in soils and clay minerals by isotopic exchange

    Measurement of exchangeable aluminium in soils and clay minerals by isotopic exchange

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Isotopically exchangeable Al was determined in soils and clay minerals by equilibration with 28Al. Best results were obtained with a weak extractant and an equilibration time of eight min. The calculated amount of isotopically exchangeable Al was independent of the...
  6. Effect of moisture supply on CAM in <em>Opuntia aurantiaca</em> (jointed cactus)

    Effect of moisture supply on CAM in <em>Opuntia aurantiaca</em> (jointed cactus)

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    The patterns of gas exchange exhibited by Opuntia aurantiaca under controlled conditions (photoperiod 12 h; day/night temperature regime 30/15°C) were investigated for plants subjected to various levels of moisture stress. Unstressed plants exhibited a typical full-CAM pattern of gas exchange...
  7. A proposed mechanism for the volatilization of ammonia from fertilized neutral to alkaline soils

    A proposed mechanism for the volatilization of ammonia from fertilized neutral to alkaline soils

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Ammonia volatilization from five soils, ranging in clay content from 7,6 to 49,9%, were determined after pH values of the soils were adjusted to 8,0. Ammonium sulphate, limestone ammonium nitrate, urea, monoammonium phosphate and diammonium phosphate were applied on the...
  8. Kleimineralogie, katioonuitruilkapasiteit en waterhouvermoë van grondvorms in die Hoëveldstreek

    Kleimineralogie, katioonuitruilkapasiteit en waterhouvermoë van grondvorms in die Hoëveldstreek

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Kleimineralogiese data vir 12 grondvorms, wat algemeen in die Hoëveldstreek voorkom, is ondersoek. Die persentasie monsters waarin 'n bepaalde kleimineraal voorkom, is bereken. Daaruit is dit duidelik dat smektiet algemeen in gronde van die Arcadia-, Bonheim, en Rensburgvorms voorkom, maar...
  9. Comparison of methods for estimating cation exchange capacity of orchard soils

    Comparison of methods for estimating cation exchange capacity of orchard soils

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Various methods for estimating soil cation exchange capacity (CEC) were compared. CEC obtained by the sum of extractable cations and the Adams-Evans buffer method were considerably higher than those obtained by saturation and displacement of either NH4 + or Na+...
  10. The effect of lime, KCl and parent material on the cation exchange capacity of some acid subsoils of the western Cape

    The effect of lime, KCl and parent material on the cation exchange capacity of some acid subsoils of the western Cape

    Item type: Journal Article • Journal: South African Journal of Plant and Soil
    Cation exchange capacity (CEC) values obtained by 22Na dilution for a number of mineralogically diverse acid subsoils reflected positive responses to lime and to treatment with KCl such that: CEC (unlimed, no KCl) < (unlimed + KCl) < (limed, no...