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Bepaling van donkerrespirasie by mielies (Zea mays L.)
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: W.H. du Preez --- Landboufakulteit, Republiek van Suid-Afrika J.J. Human --- Landboufakulteit, Republiek van Suid-Afrika L.P. de Bruyn --- Landboufakulteit, Republiek van Suid-AfrikaTwee mieliecultivars wat in potte onder glashuistoestande met optimale watervoorsiening gekweek is, is gedurende die agtblaarstadium en stuifmeelstort tot baardverskyning aan stremming onderwerp deur watertoediening te weerhou. Die CO2-uitvloeitempo is op sekere tye gedurende die nagperiode gemonitor. Hierdie waardes het... -
Evidence that alachlor selectivity in sunflower is based on depth-protection
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J. Allemann --- Department of Plant Production and Soil Science, Republic of South Africa C.F. Reinhardt --- Department of Plant Production and Soil Science, Republic of South AfricaThe relative importance of the underground shoot parts (hypocotyl) and roots of sunflower (Helianthus annuus L.) seedlings on the absorption of alachlor [a-chloro-2′,6′-diethyl- N-(methoxymethyl) acetanilide] was studied in a glasshouse experiment. A layer of activated charcoal divided the soil in... -
PRELIMINARY RESULTS ON THE UPTAKE AND RELEASE OF 32P BY POTAMOGETON PECTINATUS
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: J.H. Swanepoel --- , South Africa J.F. Vermaak --- , South AfricaThe absorption and release of 32PO4, by Potamogeton pectinatus L during winter was investigated using a partitioned container in which the roots were separated from the stems and leaves. 32PO4 is absorbed by the roots as well as the stems... -
Phytoplankton absorption and pigment adaptation of a red tide in the Benguela ecosystem
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: R Barlow --- , South Africa T Lamont --- , South AfricaPhytoplankton absorption and pigment characteristics of a red tide were investigated in coastal waters of the southern Benguela. Diagnostic indices indicated that dinoflagellates were the dominant phytoplankton group, with diatoms and small flagellates being of secondary importance. Very high biomass... -
Variation in foliar water content and hyperspectral reflectance of Pinus patula trees infested by Sirex noctilio
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: O Mutanga --- School of Environmental Sciences, South Africa R Ismail --- School of Environmental Sciences, South AfricaThe remote detection and quantification of symptoms associated with declining forest health is critical for the introduction of proper pest monitoring and control measures. Sirex noctilio, the Eurasian wood wasp, is one of the major pests responsible for declining forest... -
Assessing the ability of fodder beet (Beta vulgaris L. ‘Brigadier’) to absorb sodium from a soil irrigated with sodium-enriched water
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Philip A Myburgh --- Agricultural Research Council–Infruitec/Nietvoorbij, South Africa Carolyn L Howell --- Agricultural Research Council–Infruitec/Nietvoorbij, South AfricaA pot experiment was carried out to determine the sodium (Na) absorption ability of halophytic fodder beet (Beta vulgaris L. ‘Brigadier’) irrigated with water enriched to Na levels found in winery wastewater. Treatments comprised (1) soil without plants irrigated with... -
Understanding lactose intolerance and the dietary management thereof
Item type: Journal Article • Journal: South African Family Practice • Authors: IL Labuschagne --- Division of Human Nutrition, Department of Interdisciplinary Health Sciences Faculty of Health Sciences, MJ Lombard --- Division of Human Nutrition, Department of Interdisciplinary Health Sciences Faculty of Health Sciences,Diets that exclude dairy may decrease gastrointestinal symptoms in symptomatic individuals who have lactose malabsorption or lactose intolerance. However, most lactose-intolerant adults can consume some lactose without experiencing major symptoms, thereby reducing the need for strict elimination of dairy products... -
People performance enablers in relation to employees’ psychological attachment to the organisation
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Dieter Veldsmana --- The HR Touch, Mindset Management, South Africa Melinde Coetzeeb --- Department of Industrial and Organisational Psychology, South AfricaThis study investigated the relationship between a set of people performance enablers and psychological attachment behavioural states in a variety of South African work settings. The sample (N = 582) comprised mostly males (69%) and black Africans from organisations in the manufacturing... -
Malabsorption: causes, consequences, diagnosis and treatment
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: R. Blaauw --- Division of Human Nutrition,Malabsorption generally refers to the alterations of the gastrointestinal tract affecting the digestion, absorption and transport of nutrients across the bowel wall. In this article the causes, diagnostic tests and appropriate treatment options will be discussed by differentiating between premucosal,... -
Heavy metal concentrations in, and human health risk assessment of, three commercially valuable fish species in the lower Niger River, Nigeria
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: JC Madu --- Department of Zoology and Environmental Biology, Nigeria GE Odo --- Department of Zoology and Environmental Biology, Nigeria CN Asogwa --- Department of Zoology and Environmental Biology, Nigeria CD Nwani --- Department of Zoology and Environmental Biology, NigeriaThe concentrations of Fe, Mn, Ni, Pb and V in water, sediment and the gill, liver and muscle tissues of Synodontis resupinatus, Heterotis niloticus and Clarias gariepinus, all commercially important fish species of the lower Niger River, were investigated in... -
Flexural, water absorption and wear responses of green composites from bio-resources
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Isiaka Oluwole Oladele --- Department of Metallurgical and Materials Engineering, Nigeria Oluwaseun Olayinka Abegunde --- Department of Metallurgical and Materials Engineering, Nigeria Abdullahi Olawale Masud --- Department of Metallurgical and Materials Engineering, NigeriaThis research was carried out to produce corn husk fibre reinforced recycled waste paper-based composites using natural rubber as a binder. The paper pulp was obtained by soaking waste paper in water for 24 hours after which it was ground... -
Psychosocial and behavioural correlates of attitudes towards antiretroviral therapy (ART) in a sample of South African mineworkers
Item type: Journal Article • Journal: SAHARA-J: Journal of Social Aspects of HIV/AIDS • Authors: Kaymarlin Govender --- School of Psychology, University of KwaZulu-Natal, Olagoke Akintola --- School of Psychology, University of KwaZulu-Natal, Gavin George --- Health Economics and HIV/AIDS Research Division (HEARD), University of KwaZulu-Natal, Inge Petersen --- School of Psychology, University of KwaZulu-Natal, Anil Bhagwanjee --- School of Psychology, University of KwaZulu-Natal, Candice Reardon --- Health Economics and HIV/AIDS Research Division (HEARD), University of KwaZulu-Natal,Despite being one of the worst affected sectors in South Africa, the mining sector has proven to be one of the most active in intervention efforts in the fight against HIV and AIDS (Ellis, 2007). Owing to low uptake rates... -
Call centre support staff job crafting and employee engagement: Controlling the effects of sociodemographic characteristics
Item type: Journal Article • Journal: Journal of Psychology in Africa • Authors: Dudu Mkhwanazi --- University of Johannesburg, South Africa Nelesh Dhanpat --- University of Johannesburg, South AfricaThe study explored job crafting (task, cognitive, and relational crafting) and work engagement (vigour, absorption, and dedication) among support staff within a financial services call centre in the Gauteng province, South Africa. The participants (n = 213; female = 54.9%;... -
Effects of succinic acid impregnation on physical properties of sapwood and heartwood from plantation-grown short-rotation teak
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Sarah Augustina --- National Research and Innovation Agency (BRIN), Indonesia Teguh Darmawan --- National Research and Innovation Agency (BRIN), Indonesia Sudarmanto --- National Research and Innovation Agency (BRIN), Indonesia Narto Narto --- National Research and Innovation Agency (BRIN), Indonesia Adik Bahanawan --- National Research and Innovation Agency (BRIN), Indonesia Danang S Adi --- National Research and Innovation Agency (BRIN), Indonesia Dimas Triwibowo --- National Research and Innovation Agency (BRIN), Indonesia Yusup Amin --- National Research and Innovation Agency (BRIN), Indonesia Imran A Sofianto --- National Research and Innovation Agency (BRIN), Indonesia Prabu S Sejati --- National Research and Innovation Agency (BRIN), Indonesia Wahyu Dwianto --- National Research and Innovation Agency (BRIN), Indonesia Witjaksono --- National Research and Innovation Agency, Indonesia Ragil Widyorini --- Universitas Gadjah Mada, Philippe Gérardin --- Université de Lorraine, France Sari Delviana Marbun --- National Research and Innovation Agency (BRIN), IndonesiaThe aim of this study was to improve the properties of 15-year-old short rotation teak wood using a succinic acid (SA) treatment without excessively increasing the weight gain. The samples were classified as sapwood (SW) and heartwood (HW). Samples were...
