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Synthesis of heat-shock proteins in six cotton cultivars at different heat treatments
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: J.A. de Ronde --- , Republic of South Africa W.A. Cress --- Department of Botany, Republic of South AfricaChanges in protein synthesis in leaf tissue of six cotton cultivars were studied by comparing the heat-shock protein patterns synthesized at different heat treatments. Leaf tissue responded to thermotolerance treatments by synthesizing a specific set of proteins for each treatment... -
The response of germinating sunflower seed to heat tolerance induction
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: A.A. Nel --- , Republic of South AfricaVigour of pre-emergent sunflower (Helianthus annuus L.) seedlings is reduced when daily peak soil temperatures exceed 44°C resulting in poor emergence. Seedlings of sorghum (Sorghum bicolor L. Moench) are known to acquire thermotolerance to temperatures of 45–50°C as a consequence... -
The febrile parturient: choice of anesthesia
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: Krzysztof M Kuczkowski --- Departments of Anesthesiology and Reproductive Medicine, -
The benefits and risks of vasoactive agents
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: RP Von Rahden --- Clinical Unit; Department of Anaesthesia,Current shock resuscitation strategies require titration of fluid in combination with inotropes and vasopressors to counteract the actual pattern of circulatory abnormality in the patient, and to restore the circulation to a level that is adequate to prevent organ ischaemia... -
Intraoperative point-of-care testing
Item type: Journal Article • Journal: Southern African Journal of Anaesthesia and Analgesia • Authors: RP Von Rahden --- Clinical Unit; Department of Anaesthesia,Point-of-care devices offer an increasing number of analytical tests more quickly than laboratory analysis, but clinicians must be aware of the limitations of these devices, especially for critical threshold-level decisions. Glucometers are susceptible to a wide range of errors, and... -
Use of hydrogels in the planting of industrial wood plantations
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Jacob W Crous --- Sappi Forests, South AfricaThe quantity of available water in soil is crucial for plant growth, especially after transplanting as this water will enable the growth of new roots to facilitate nutrient and water uptake. Water absorbed by a hydrogel (superabsorbent polymer) has the... -
Biomarkers, shock index and modified early warning score among older medical hospital inpatients in Nigeria
Item type: Journal Article • Journal: South African Family Practice • Authors: LA Adebusoye --- Chief Tony Anenih Geriatric Centre (CTAGC), Nigeria MO Owolabi --- Department of Medicine, College of Medicine, Nigeria A Ogunniyi --- Department of Medicine, College of Medicine, NigeriaBackground: Biomarkers, shock index and modified early warning score (MEWS) are of public health importance because identification and prompt attention to them have been found to reduce mortality among older patients on admission. -
Modelling spillover effects between the UK and the US stock markets over the period 1935–2020
Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Olalekan Aladesanmi --- , United KingdomThis study investigates the spillovers of shocks and volatilities between the UK and the US stock markets over the period 1935–2020. The empirical analysis is carried out for the full sample and four subsample periods by applying the asymmetric GARCH-BEKK... -
Resilience to shocks and food insecurity: Determinants, and the impact of smallholder jatropha curcas cultivation in Southern Malawi
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Owen Y. Chamdimba --- , South Africa Gerald F. Ortmann --- , South Africa Edilegnaw Wale --- , South AfricaThis paper studied household resilience to food insecurity, its determinants, and the impact of shocks on welfare in Southern Malawi. The resilience concept is evolving. A crucial issue in scholarly and policy space is how it is measured. This paper... -
Increasing resilience to the SARS-CoV-2 virus and other health threats in food-insecure communities
Item type: Journal Article • Journal: South African Journal of Clinical Nutrition • Authors: Karen Morris --- , South Africa Thandi Puoane --- , South AfricaThe health of the majority of South Africa’s population is seriously threatened by hunger and micronutrient deficiency, with impaired immune response a real threat, which the current SARSCoV-2 virus pandemic has highlighted. Traditional household food-processing techniques can, amongst other advantages,... -
A quantile-based analysis of risk-return dynamics in the South African equity market
Item type: Journal Article • Journal: Investment Analysts Journal • Authors: Munyaradzi Chawana --- , South Africa Ilse Botha --- School of Accounting, College of Business and Economics, University of Johannesburg, South Africa Yolanda Stander --- Investec, Senior research associate at University of Johannesburg, South AfricaThis paper employs quantile autoregression to investigate the influence of ‘market size’ and ‘industry’ effects on the South African equity market volatility response to return shocks. It is now well documented that equity market volatility exhibits asymmetric response to positive... -
HIV-sensitive social protection: an assessment of east and southern Africa’s social protection policies and programmes
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Zitha Mokomane --- University of Pretoria, South Africa Nonhlanhla Xaba --- , South Africa Kai Roehm --- , South Africa Mutinta Hambayi --- , Kenya Manaan Mumma --- , Kenya Giovanni Giordana --- , Kenya Simphiwe Mabhele --- , South Africa Christian Mouala --- ,Despite notable political and financial commitment to fight the HIV epidemic, east and southern Africa (ESA) remains the world regions most affected. Given increasing calls for the implementation of HIV-sensitive social protection programmes to address the multiple individual, community and... -
Stability of Riemann solutions to a class of non-strictly hyperbolic systems of conservation laws
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Shiwei Li --- Henan University of Engineering, P.R. ChinaThis paper is concerned with Riemann problem for a class of non-strictly hyperbolic systems of conservation laws. The two kinds of Riemann solutions including vacuum and delta shock wave are constructed. Under the generalized Rankine-Hugoniot relation and entropy condition, we... -
Concentration and cavitation in the Riemann solution for the relativistic Euler equations with non-ideal isothermal dusty gas
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Bencui Shan --- Yunnan Normal University, P.R. China Yanyan Zhang --- Xinyang Normal University, P.R. China Yu Zhang --- Yunnan Normal University, P.R. ChinaThe phenomena of concentration and cavitation in the Riemann solutions of the relativistic Euler equations with non-ideal isothermal dusty gas are considered. The Riemann problem is solved first, and the solutions consisting of rarefaction waves and shock waves are obtained... -
Saving for a rainy day: piloting a savings intervention to reduce HIV risk among young female sex workers in Kenya
Item type: Journal Article • Journal: African Journal of AIDS Research • Authors: Linet Achieng' Ochieng' --- Impact Research and Development Organization, Kenya Jacob Onyango --- Impact Research and Development Organization, Kenya Gerald Ochieng' Owuor --- Impact Research and Development Organization, Kenya Ivy Obare --- Impact Research and Development Organization, Kenya Marylyn Ochillo --- Impact Research and Development Organization, Kenya Tobias Odwar --- Impact Research and Development Organization, Kenya Elizabeth Bukusi --- Kenya Medical Research Institute, Kenya Kawango Agot --- Impact Research and Development Organization, KenyaFinancial insecurity pushes female sex workers into risky sexual transactions. We piloted an economic empowerment intervention among female sex workers in Kenya to test if they could save part of their income from which to make withdrawals to avoid risky... -
Delta-shocks and vacuums as flux-approximation limit of solutions to the Aw-Rascle model with time-dependent source
Item type: Journal Article • Journal: Quaestiones Mathematicae • Authors: Mengqi Cui --- Department of Mathematics, Yunnan Normal University, P.R. China Shuai Fan --- Department of Mathematics, Yunnan Normal University, P.R. China Yu Zhang --- Department of Mathematics, Yunnan Normal University, P.R. ChinaThe flux-approximation limit of solutions to the Aw-Rascle (AR) traffic flow model with time-dependent source is considered. First, the Riemann problem containing flux perturbation and generalized Chaplygin gas (GCG) pressure is solved. Then, it is proved that, as the flux...