• Exploring contingent convertible bond alternatives for African banks 

  Liebenberg, Francois J.N.; Van Vuuren, Gary W.; Heymans, André (AOSIS, 2018)

  Background: A variant of the contingent convertible bond, first proposed in 2011, is investigated: the Call Option Enhanced Reverse Convertible (COERC). Although issued as a bond, it converts to new shareholder’s equity ...
• Performance of two zero-cost derivative strategies under different market conditions 

  Basson, L.J.; Van den Berg, Lee; Van Vuuren, Gary (Taylor & Francis, 2018)

  Zero-cost collars are option-based strategies which—by matching prices received and paid for the component derivatives—provide costless protection for stock or index investments. The investors’ risk appetite determines ...
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  Hypertriglyceridaemia and the risk of pancreatitis six months post lopinavir/ritonavir initiation 

  Greffrath, Wilhelm P.; Du Plessis, Jesslee M.; Viljoen, Michelle; Cockeran, Marike (AOSIS, 2018)

  Background: Hypertriglyceridaemia (HTG) is an important risk factor for pancreatitis and cardiovascular disease (CVD), depending on severity. Hypertriglyceridaemia is common in human immunodeficiency virus (HIV) infection ...
• Biometrology guidelines for the in vivo assessment of transepidermal water loss and skin hydration in nonclinical settings 

  Du Plessis, Johan L.; Stefaniak, Aleksandr B. (Springer, 2017)

  It is becoming evident that assessment of skin exposure to physical and chemical stressors in workplaces should be accompanied by the assessment of skin barrier function at the time of exposure. “Real-life” occupational ...
• Biometrology guidelines for the in vivo assessment of skin surface pH in nonclinical settings 

  Stefaniak, Aleksandr B.; Du Plessis, Johan L. (Springer, 2017)

  Skin surface pH plays an important role in the maintenance of skin barrier integrity and epidermal homeostasis. In workplace environments, myriad exposures may alter the skin surface pH and influence development of skin ...
• A pilot study comparing bioelectrical impedance analysis and body mass index in determining obesity among staff of a Ghanaian University 

  Hayford, Frank Ekow Atta; Appiah, Collins Afriyie; Al Hassan, Taofik; Asamoah-Boakye, Odeafo; Asante, Matilda (Emerald, 2018)

  Purpose In Ghana, the body mass index (BMI) is widely used in clinical practice in assessing weight status, but it is limited as a measure of adiposity. The purpose of this study was to compare bioelectrical impedance ...
• Predictors of hypertension awareness, treatment and control in South Africa: results from the WHO-SAGE population survey (Wave 2) 

  Ware, Lisa Jayne; Schutte, Aletta Elisabeth; Chidumwa, Glory; Charlton, Karen; Kowal, Paul (Springer Nature, 2018)

  South Africa has one of the highest levels of hypertension globally, coupled with poor rates of diagnosis, treatment and control. Risk factors that predict hypertension in high income countries may perform differently in ...
• Life stories managing chronic illness: young adults’ lived experiences with type 1 diabetes 

  Willemse, Marietjie; Deacon, Elmari; Segal, David (Taylor & Francis, 2018)

  This study aimed to characterise diabetes management experiences of South African young adults living with well-controlled type 1 diabetes (n = 8, female = 5, male = 3, age range = 20–25) The young adults told life ...
• Concurrent tobacco use and risky drinking in South Africa: results from the South African National Health and Nutrition Examination Survey 

  Phaswana-Mafuya, Nancy; Peltzer, Karl; Pengpid, Supa (Taylor & Francis, 2018)

  The aim of this study was to examine socio-demographic and psychosocial correlates of concurrent tobacco use and risky drinking We analysed data from the cross-sectional South African National Health and Nutrition ...
• A critical inquiry into marble-burying as a preclinical screening paradigm of relevance for anxiety and obsessive-compulsive disorder: mapping the way forward 

  De Brouwer, Geoffrey; Fick, Arina; Harvey, Brian H.; Wolmarans, De Wet (Springer, 2018)

  Rodent marble-burying behavior in the marble-burying test (MBT) is employed as a model or measure to study anxiety- and compulsive-like behaviors or anxiolytic and anticompulsive drug action. However, the test responds ...
• Large artery stiffness is associated with marinobufagenin in young adults: the African-PREDICT study 

  Strauss, Michél; Smith, Wayne; Schutte, Aletta E.; Wei, Wen; Bagrov, Alexei Y. (Wolters Kluwer, 2018)

  Objectives: The cardiotonic steroid, marinobufagenin (MBG), has been shown to play a physiological natriuretic role in response to salt intake. However, recent studies in clinical and animal models demonstrated possible ...
• Change in dominance determines herbivore effects on plant biodiversity 

  Koerner, Sally E.; Siebert, Frances; Smith, Melinda D.; Burkepile, Deron E.; Hanan, Niall P. (Nature, 2018)

  Herbivores alter plant biodiversity (species richness) in many of the world’s ecosystems, but the magnitude and the direction of herbivore effects on biodiversity vary widely within and among ecosystems. One current theory ...
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  An assessment of applicability of existing approaches to predicting the bioaccumulation of conventional substances in nanomaterials 

  Utembe, Wells; Wepener, Victor; Yu, Il Je; Gulumian, Mary (Setac, 2018)

  The experimental determination of bioaccumulation is challenging, and a number of approaches have been developed for its prediction. It is important to assess the applicability of these predictive approaches to nanomaterials ...
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  The evolution of UDP-glycosyl/glucuronosyltransferase 1E (UGT1E) genes in bird lineages is linked to feeding habits but UGT2 genes is not 

  Kawai, Yusuke K.; Ikenaka, Yoshinori; Ishizuka, Mayumi; Kubota, Akira (PLoS, 2018)

  UDP-glycosyltransferase (UGT) catalyzes the transfer of glycosyl groups (e.g., glucuronic acid) to exogenous or endogenous chemicals and plays an important role in conjugation reactions. In vertebrates, UGT genes are ...
• Diversifying into the branches: species boundaries in African green and bush snakes, Philothamnus (Serpentes: Colubridae) 

  Engelbrecht, Hanlie M.; Burger, Marius; Branch, William R.; Greenbaum, Eli; Alexander, Graham J. (Elsevier, 2019)

  The African green and bush snakes of the genus Philothamnus currently comprises 21 species and three subspecies and occurs throughout sub-Saharan Africa. The genus has been the subject of previous taxonomic revisions based ...
• Bioaccumulation and trophic transfer of total mercury in the subtropical Olifants River Basin, South Africa 

  Verhaert, Vera; Vlok, Wynand; Wepener, Victor; Teuchies, Johannes; Addo-Bediako, Abraham (Elsevier, 2019)

  The present study describes total mercury (THg) levels in surface water, sediment and biota from the Olifants River Basin (ORB) (South Africa) and investigates the trophic transfer of THg by means of trophic magnification ...
• In situ capturing and absorption of sulfur gases formed during thermal treatment of South African coals 

  Matjie, Ratale H.; Lesufi, Jeanett M.; Bunt, John R.; Strydom, Christien A.; Uwaoma, Romanus (ACS, 2018)

  The objective of this study, the first of its kind on these specific South African low-sulfur coals, was to capture H2S and SO2 produced under inert and oxidizing conditions from sulfur compounds present in the coals. The ...
• Hybrid DFT study of MWCNT/Zr-doped SrTiO3 heterostructure: hydrogen production, electronic properties and charge Carrier mediator role of Zr4+ ion 

  Opoku, Francis; Van Sittert, Cornelia Gertina Catharina Elizabeth; Govender, Krishna Kuben; Govender, Penny Poomani (Elsevier, 2018)

  Over the past decade, remarkable efforts have been made to design low-cost, non-toxic, stable and efficient photocatalyst for water splitting. In the present work, an effective alternative approach to enhance hydrogen ...
• Bootstrap maximum likelihood for quasi-stationary distributions 

  Guo, Guangbao; Allison, James; Zhu, Lixing (Taylor & Francis, 2018)

  Quasi-stationary distributions have many applications in diverse research fields. We develop a bootstrap-based maximum likelihood (BML) method to deal with quasi-stationary distributions in statistical inference. To ...
• Size-resolved characteristics of inorganic ionic species in atmospheric aerosols at a regional background site on the South African Highveld 

  Venter, Andrew D.; Van Zyl, Pieter G.; Beukes, Johan P.; Swartz, Jan-Stefan; Josipovic, Miroslav; Laakso, Lauri (Springer, 2018)

  Aerosols consist of organic and inorganic species, and the composition and concentration of these species depends on their sources, chemical transformation and sinks. In this study an assessment of major inorganic ions ...

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