Browsing Research Articles (University of Pretoria) by Title

Browsing Research Articles (University of Pretoria) by Title

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  • Cut-off lows over South Africa : a review 
    Xulu, Nkosinathi G.; Chikoore, Hector; Bopape, Mary-Jane M.; Ndarana, Thando; Muofhe, Tshimbiluni P.; Mbokodo, Innocent L.; Munyai, Rendani B.; Singo, Mukovhe V.; Mohomi, Tumelo; Mbatha, Sifiso M.S.; Mdoka, Marshall L. (MDPI, 2023-03-05)
    Every year, cut-off low (COL) pressure systems produce severe weather conditions and heavy rainfall, often leading to flooding, devastation and disruption of socio-economic activities in South Africa. COLs are defined ...
  • Cutaneous immunoprofiles of three spotted fever group Rickettsia cases 
    Jia, Na; Liu, Hong-Bo; Zheng, Yuan-Chun; Shi, Wen-Qiang; Wei, Ran; Chu, Yan-Li; Ning, Nian-Zhi; Jiang, Bao-Gui; Jiang, Rui-Ruo; Li, Tao; Huo, Qiu-Bo; Bian, Cai; Liu, Xiong; Sun, Yi; Li, Lian-Feng; Wang, Qian; Wei, Wei; Wang, Ya-Wei; Jongejan, Frans; Jiang, Jia-Fu; Song, Ju-Liang; Wang, Hui; Cao, Wu-Chun (American Society for Microbiology, 2020-04)
    Spotted fever group rickettsia (SFGR) can cause mild to fatal illness. The early interaction between the host and rickettsia in skin is largely unknown, and the pathogenesis of severe rickettsiosis remains an important ...
  • Cutaneous tuberculosis in HIV-infected individuals : lessons learnt from a case series 
    Tshisevhe, V.S.; Mbelle, Nontombi Marylucy; Peters, Remco P.H. (AOSIS Open Journals, 2019-03-12)
    INTRODUCTION : Extrapulmonary tuberculosis (TB) causes a significant burden of disease worldwide, especially among HIV-infected individuals and those with other immunosuppressive conditions. Cutaneous TB is an important ...
  • Cutting and sewing brings Africa to the world : social justice for older people 
    Prinsloo, Reineth (Routledge, 2020)
    Older people are marginalized and are often subjected to discrimination and injustice. Yet they have a wealth of experience, wisdom, and skills that they can contribute. This story describes a project where a group of older ...
  • cVEMPs : a systematic review and meta-analysis 
    Meyer, Nathalie; Vinck, Bart M.; Heinze, Barbara M. (Informa Healthcare, 2015-03)
    OBJECTIVE : A systematic literature review and meta-analysis was performed to determine the effect of stimulus type, SCM muscle activation method, transducer type, and method to control SCM muscle EMG level on response ...
  • Cyanidation of reef and surface gold ores 
    Rademan, L.; Groot, D.R. (Southern African Institute of Mining and Metallurgy, 2012-04)
    The kinetic leaching behaviour of a low-grade surface gold ore and a high-grade reef ore were evaluated to determine the achievable gold recovery from these ores and particularly mixtures of these ores. The reef ore ...
  • Cyanobacteria and alphaproteobacteria may facilitate cooperative interactions in niche communities 
    Van Goethem, Marc W.; Makhalanyane, Thulani Peter; Cowan, Don A.; Valverde, Angel (Frontiers Research Foundation, 2017-10-25)
    Hypoliths, microbial assemblages found below translucent rocks, provide important ecosystem services in deserts. While several studies have assessed microbial diversity of hot desert hypoliths and whether these communities ...
  • Cyanobacteria drive community composition and functionality in rock-soil interface communities 
    Valverde, Angel; Makhalanyane, Thulani Peter; Seely, Mary; Cowan, Don A. (Wiley, 2015-02)
    Most ecological research on hypoliths, significant primary producers in hyperarid deserts, has focused on the diversity of individual groups of microbes (i.e. bacteria). However, microbial communities are inherently ...
  • Cyanobacteria harmful algae blooms: causes, impacts, and risk management 
    Igwaran, Aboi; Kayode, Adeoye John; Moloantoa, Karabelo M.; Khetsha, Zenzile P.; Unuofin, John Onolame (Springer, 2024-01)
    Cyanobacteria harmful algal blooms (cHABs) are increasingly becoming an emerging threat to aquatic life, ecotourism, and certain real estate investments. Their spontaneous yet sporadic occurrence has made mitigation measures ...
  • Cyber-security : identity deception detection on social media platforms 
    Van der Walt, Estee; Eloff, Jan H.P.; Grobler, Jacomine (Elsevier, 2018-09)
    Social media platforms allow billions of individuals to share their thoughts, likes and dislikes in real-time, without any censorship. This freedom, however, comes at a cyber-security risk. Cyber threats are more difficult ...
  • Cybershopping : concerns of the South African consumer 
    North, Ernest J.; Mostert, P.G. (Pierre); Du Plessis, P.J. (South African Association of Family Ecology and Consumer Sciences, 2003)
    Meeste outeurs wat oor verbruikersbesluitneming skryf, impliseer dat die verbruiker se besluit om 'n sekere produk of diens te koop ook insluit waar of by watter afsetpunt gekoop sal word. Weinig inligting is beskikbaar ...
  • CyberSurfiver : affective considerations of 'surviving' online learning 
    Meyer, Salome M.; Cronje, Johannes Christoffel; Eloff, Irma (Unisa Press, 2007)
    This article concentrates on the role that affective learning plays in e-learning. Understandably, personal contact is minimal in online learning so the question arises: How do students cope with the lack of personal ...
  • Cycad collicles (“leaflet nodules”) 
    Grobbelaar, Nathanael; Robbertse, P.J. (Petrus Johannes), 1932- (Elsevier, 2012-05)
    The presence of small knobs/nodules found on the adaxial leaflet surface of some Encephalartos species was investigated in 134 cycad species of nine genera. The knobs, referred to as collicles, were found to be the result ...
  • The Cycas genome and the early evolution of seed plants 
    Liu, Yang; Wang, Sibu; Li, Linzhou; Yang, Ting; Dong, Shanshan; Wei, Tong; Wu, Shengdan; Liu, Yongbo; Gong, Yiqing; Feng, Xiuyan; Ma, Jianchao; Chang, Guanxiao; Huang, Jinling; Yang, Yong; Wang, Hongli; Liu, Min; Xu, Yan; Liang, Hongping; Yu, Jin; Cai, Yuqing; Zhang, Zhaowu; Fan, Yannan; Mu, Weixue; Sahu, Sunil Kumar; Liu, Shuchun; Lang, Xiaoan; Yang, Leilei; Li, Na; Habib, Sadaf; Yang, Yongqiong; Lindstrom, Anders J.; Liang, Pei; Goffinet, Bernard; Zaman, Sumaira; Wegrzyn, Jill; Li, Dexiang; Liu, Jian; Cui, Jie; Sonnenschein, Eva C.; Wang, Xiaobo; Ruan, Jue; Xue, Jia-Yu; Shao, Zhu-Qing; Song, Chi; Fan, Guangyi; Li, Zhen; Zhang, Liangsheng; Liu, Jianquan; Liu, Zhong-Jian; Jiao, Yuannian; Wang, Xiao-Quan; Wu, Hong; Wang, Ertao; Lisby, Michael; Yang, Huanming; Wang, Jian; Liu, Xin; Xu, Xun; Li, Nan; Soltis, Pamela S.; Van de Peer, Yves; Soltis, Douglas E.; Gong, Xun; Liu, Huan; Zhang, Shouzhou (Nature Research, 2022-04-18)
    Cycads represent one of the most ancient lineages of living seed plants. Identifying genomic features uniquely shared by cycads and other extant seed plants, but not non-seed-producing plants, may shed light on the origin ...
  • Cyclic neutropenia in a basset hound 
    Koster, Liza Sally; Harper, Cindy Kim; Goddard, Amelia (BMJ Publishing Group, 2015)
    A 6 month old, male basset hound was referred for intermittent malaise, and pyrexia that repeated every 10-11 days. Sequential blood counts and bone marrow aspirates demonstrated severe neutropaenia and increased myeloid ...
  • Cycling and floating performance of symmetric supercapacitor derived from coconut shell biomass 
    Barzegar, Farshad; Khaleed, Abubakar A.; Ugbo, F.U.; Oyeniran, K.O.; Momodu, Damilola Y.; Bello, Abdulhakeem; Dangbegnon, Julien K.; Manyala, Ncholu I. (American Institute of Physics, 2016)
    This work present two-step synthesizes route to low-cost mesoporous carbon from coconut shell. The electrochemical characterization of the coconut shell based activated carbon (CSAC) material as electrode for supercapacitor ...
  • Cyclitol metabolism is a central feature of Burkholderia leaf symbionts 
    Danneels, Bram; Blignaut, Monique; Marti, Guillaume; Sieber, Simon; Vandamme, Peter; Meyer, Marion; Carlier, Aurelien (Wiley, 2023-02)
    The symbioses between plants of the Rubiaceae and Primulaceae families with Burkholderia bacteria represent unique and intimate plant–bacterial relationships. Many of these interactions have been identified through ...
  • Cycloartanol and Sutherlandioside C peracetate from Sutherlandia frutescens and their immune potentiating effects 
    Gonyela, Odwa; Peter, Xolani; Dewar, John B.; Van der Westhuyzen, Chris; Steenkamp, Paul; Fouche, Gerda (Taylor and Francis, 2021)
    A novel cycloartanol (1) and an acylated Sutherlandioside D (2) together with two known cycloartane derivatives, Sutherlandioside B (3) and Sutherlandioside A (4), were isolated from the aerial parts of Sutherlandia ...
  • Cyclomap : a new phase-cycle analysis to study the kinematics of gears and bearings 
    Sibanda, Thato; Schmidt, Stephan (Elsevier, 2023-12)
    The object of this paper is to propose a new phase-cycle analysis for gear and bearing diagnostics of rotating machinery which synthesises the theory of angle-time cyclostationary (AT-CS). The motivation for this research ...
  • Cyclooxygenase inhibitors and the exercise-induced stress response 
    Claassen, Nico; Snyman, Jacques Rene; Koorts, Alida Maria; Nolte, Heinrich Wilhelm; Wagenaar, B.; Kruger, Mariana; Becker, Piet J.; Viljoen, Margaretha (Health and Medical Publishing Group, 2006-03)
    OBJECTIVE: This study investigated the effects of single dosages of the non-steroidal anti-inflammatory drug (NSAID) naproxen, and of the coxib, rofecoxib, on the exercise-induced stress response. Conclusion. The results ...