Browsing Workspace (UPSpace) by Title

Browsing Workspace (UPSpace) by Title

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  • Validation of a dynamic non-linear grinding circuit model for process control 
    Le Roux, Johan Derik; Steyn, C.W. (Elsevier, 2022-09)
    A step-wise algebraic routine is used to fit a dynamic non-linear model, specifically developed for process control, to steady-state process data of an industrial single-stage grinding mill circuit. Step-test data from the ...
  • Validation of low-cost impedance analyzer via nitrate detection 
    De Beer, Dirk Johannes; Joubert, Trudi-Heleen (MDPI, 2021-10-08)
    Impedance spectroscopy is a widely used electrochemical technique with a wide variety of applications. Many of these applications benefit from the additional accessibility provided by low-cost impedance devices. With this ...
  • Validation of Roberts’ method using root canal width patterns as a mandibular maturity marker in determining the 18-year threshold 
    Davidson, Christy Lana; Nel, Chane; Bernitz, Herman; Van Staden, Paul Jacobus; Uys, Andre (Springer, 2021-07)
    The South African Bill of Rights and the Children’s Act define a ‘child’ as a person under the age of 18 years. The age of 18 years is therefore significant for legal purposes in South Africa. The third molar is an important ...
  • Validation strategy of a bioinformatics whole genome sequencing workflow for Shiga toxin-producing Escherichia coli using a reference collection extensively characterized with conventional methods 
    Bogaerts, Bert; Nouws, Stephanie; Verhaegen, Bavo; Denayer, Sarah; Van Braekel, Julien; Winand, Raf; Fu, Qiang; Crombe, Florence; Pierard, Denis; Marchal, Kathleen; Roosens, Nancy H.C.; De Keersmaecker, Sigrid C. J.; Vanneste, Kevin (Microbiology Society, 2021-03-03)
    Whole genome sequencing (WGS) enables complete characterization of bacterial pathogenic isolates at single nucleotide resolution, making it the ultimate tool for routine surveillance and outbreak investigation. The lack ...
  • Valuation of ecosystem services in South Africa, 2001–2019 
    Abd Elbasit, Mohamed A.M.; Knight, Jasper; Liu, Gang; Abu-Zreig, Majed M.; Hassan, Rashid M. (MDPI, 2021-10-13)
    Please read abstract in the article.
  • Value added tax in the digital economy : a fresh look at the South African dispensation 
    Kabwe, Ruddy; Van Zyl, Stephanus Phillipus (Nelson Mandela Metropolitan University, Faculty of Law, 2021)
    The online purchase of digital goods has the propensity to generate tax liability involving a notable rise in administrative costs for tax authorities. Online transactions involving the supply of digital goods by foreign ...
  • The value of introducing sensopathic materials in a play pedagogy programme during the reception year 
    Lewington, Charlotte; Van Heerden, Judith Cornelia (Judy); Du Preez, Hannelie (Routledge, 2023)
    Rich play enhances the child’s engagement during play, and this improves the potential for learning. This study examines the place of sensory materials focused on visual and tactile stimuli (sensopathic material) during ...
  • The value-relevance of fair value measurement for inventories 
    Badenhorst, Wessel M.; Von Well, Rieka (Wiley, 2023-06)
    The objective of this paper is to determine if fair value measurement for inventories is value-relevant. Inventories are measured at historical cost and investors will have to estimate the fair value for themselves. For a ...
  • Values-based physical education for the intermediate schooling phase in a diverse South African context 
    Jones Couto, Cherese Farrah; Roux, Charl J. (AOSIS, 2021-09-27)
    Participation in physical activity, Physical Education (PE) and sport has been recognised as a powerful learning tool for education, providing a universal language for contributing to valuable life principles. Values-based ...
  • The variability of the black hole image in M87 at the dynamical timescale 
    Satapathy, Kaushik; Psaltis, Dimitrios; Ozel, Feryal; Medeiros, Lia; Dougall, Sean T.; Chan, Chi-Kwan; Wielgus, Maciek; Prather, Ben S.; Wong, George N.; Gammie, Charles F.; Akiyama, Kazunori; Alberdi, Antxon; Alef, Walter; Algaba, Juan Carlos; Anantua, Richard; Asada, Keiichi; Azulay, Rebecca; Baczko, Anne-Kathrin; Ball, David; Baloković, Mislav; Barrett, John; Benson, Bradford A.; Bintley, Dan; Blackburn, Lindy; Blundell, Raymond; Boland, Wilfred; Bouman, Katherine L.; Bower, Geoffrey C.; Boyce, Hope; Bremer, Michael; Brinkerink, Christiaan D.; Brissenden, Roger; Britzen, Silke; Broderick, Avery E.; Broguiere, Dominique; Bronzwae, Thomas; Bustament, Sandra; Byun, Do-Young; Carlstrom, John E.; Chael, Andrew; Chatterjee, Koushik; Chatterjee, Shami; Chen, Ming-Tang; Chen, Yongjun; Cho, Ilje; Christian, Pierre; Conway, John E.; Cordes, James M.; Crawford, Thomas M.; Crew, Geoffrey B.; Cruz-Osorio, Alejandro; Cui, Yuzhu; Davelaar, Jordy; De Laurentis, Mariafelicia; Deane, Roger; Dempsey, Jessica; Desvignes, Gregory; Dexter, Jason; Doeleman, Sheperd S.; Eatough, Ralph P.; Falcke, Heino; Farah, Joseph R.; Fish, Vincent L.; Fomalont, Ed; Ford, H. Alyson; Fraga-Encinas, Raquel; Friberg, Per; Fromm, Christian M.; Fuentes, Antonio; Galison, Peter; García, Roberto; Gentaz, Olivier; Georgiev, Boris; Goddi, Ciriaco; Gold, Roman; Gomez-Ruiz, Arturo I.; Gomez, Jose L.; Gu, Minfeng; Gurwell, Mark; Hada, Kazuhiro; Haggard, Daryl; Hecht, Michael H.; Hesper, Ronald; Ho, Luis C.; Ho, Paul; Honma, Mareki; Huang, Chih-Wei L.; Huang, Lei; Hughes, David H.; Ikeda, Shiro; Inoue, Makoto; Issaoun, Sara; James, David J.; Jannuzi, Buell T.; Janssen, Michael; Jeter, Britton; Jiang, Wu; Jimenez-Rosales, Alejandra; Johnson, Michael D.; Jorstad, Svetlana; Jung, Taehyun; Karami, Mansour; Karuppusamy, Ramesh; Kawashima, Tomohisa; Keating, Garrett K.; Kettenis, Mark; Kim, Dong-Jin; Kim, Jae-Young; Kim, Jongsoo; Kim, Junhan; Kino, Motoki; Koay, Jun Yi; Kofuji, Yutaro; Koch, Patrick M.; Koyama, Shoko; Kramer, Carsten; Kramer, Michael; Krichbaum, Thomas P.; Kuo, Cheng-Yu; Lauer, Tod R.; Lee, Sang-Sung; Levis, Aviad; Li, Yan-Rong; Li, Zhiyuan; Lindqvist, Michael; Lico, Rocco; Lindahl, Greg; Liu, Jun; Liu, Kuo; Liuzzo, Elisabetta; Lo, Wen-Ping; Lobanov, Andrei P.; Loinard, Laurent; Lonsdale, Colin; Lu, Ru-Sen; MacDonald, Nicholas R.; Mao, Jirong; Marchili, Nicola; Markoff, Sera; Marrone, Daniel P.; Marscher, Alan P.; Martí-Vidal, Iván; Matsushita, Satoki; Matthews, Lynn D.; Menten, Karl M.; Mizuno, Izumi; Mizuno, Yosuke; Moran, James M.; Moriyama, Kotaro; Moscibrodzka, Monika; Muller, Cornelia; Mejías, Alejandro Mus; Musoke, Gibwa; Nagai, Hiroshi; Nagar, Neil M.; Nakamura, Masanori; Narayan, Ramesh; Narayanan, Gopal; Natarajan, Iniyan; Nathanail, Antonios; Neilsen, Joey; Neri, Roberto; Ni, Chunchong; Noutsos, Aristeidis; Nowak, Michael A.; Okino, Hiroki; Olivares, Hector; Ortiz-Leon, Gisela N.; Oyama, Tomoaki; Palumbo, Daniel C. M.; Park, Jongho; Pate, Nimesh; Pen, Ue-Li; Pesce, Dominic W.; Pietu, Vincent; Plambeck, Richard; PopStefanija, Aleksandar; Porth, Oliver; Pötzl, Felix M.; Preciado-Lopez, Jorge A.; Pu, Hung-Yi; Ramakrishnan, Venkatessh; Rao, Ramprasad; Rawlings, Mark G.; Raymond, Alexander W.; Rezzolla, Luciano; Ripperda, Bart; Roelofs, Freek; Rogers, Alan; Ros, Eduardo; Rose, Mel; Roshanineshat, Arash; Rottmann, Helge; Roy, Alan L.; Ruszczyk, Chet; Rygl, Kazi L. J.; Sanchez, Salvador; Sanchez-Arguelles, David; Sasada, Mahito; Savolainen, Tuomas; Schloerb, F. Peter; Schuste, Karl-Friedrich; Shao, Lijing; Shen, Zhiqiang; Small, Des; Sohn, Bong Won; SooHoo, Jason; Sun, He; Tazaki, Fumie; Tetarenko, Alexandra J.; Tiede, Paul; Tilanus, Remo P. J.; Titus, Michael; Toma, Kenji; Torne, Pablo; Traianou, Efthalia; Trent, Tyler; Trippe, Sascha; Bemmel, Ilse van; Van Langevelde, Huib Jan; Van Rossum, Daniel R.; Wagner, Jan; Ward-Thompson, Derek; Wardle, John; Weintroub, Jonathan; Wex, Norbert; Wharton, Robert; Wiik, Kaj; Wu, Qingwen; Yoon, Doosoo; Young, André; Young, Ken; Younsi, Ziri; Yuan, Feng; Yuan, Ye-Fei; Zensus, J. Anton; Zhao, Guang-Yao; Zhao, Shan-Shan (American Astronomical Society, 2022-01)
    The black hole images obtained with the Event Horizon Telescope (EHT) are expected to be variable at the dynamical timescale near their horizons. For the black hole at the center of the M87 galaxy, this timescale (5–61 ...
  • Variants of consumption-wealth ratios and predictability of U.S. government bond risk premia 
    Cepni, Oguzhan; Gupta, Rangan; Wohar, Mark E. (Wiley, 2021-06)
    Please read abstract in the article.
  • Vascular endothelial growth factor-C in activating vascular endothelial growth factor receptor-3 and chemokine receptor-4 in melanoma adhesion 
    Hlophe, Yvette Nkondo; Joubert, Anna Margaretha (Wiley, 2022-12)
    Vascular endothelial growth factor-C (VEGF-C) binds to receptor vascular endothelial growth factor receptor-3 (VEGFR-3) expressed on lymphatic endothelial and melanoma cells. Binding of VEGF-C to VEGFR-3 enhances receptor ...
  • Vasopressin acts as a synapse organizer in limbic regions by boosting PSD95 and GluA1 expression 
    Zhang, Limei; Padilla-Flores, Teresa; Hernandez, Vito S.; Zetter, Mario A.; Campos-Lira, Elba; Escobar, Laura I.; Millar, Robert P.; Eiden, Lee E. (Wiley, 2022-09)
    Hypothalamic arginine vasopressin (AVP)-containing magnocellular neurosecretory neurons (AVPMNN) emit collaterals to synaptically innervate limbic regions influencing learning, motivational behaviour, and fear responses. ...
  • Vector competence of Eucampsipoda africana (Diptera: Nycteribiidae) for Marburg virus transmission in Rousettus aegyptiacus (Chiroptera: Pteropodidae) 
    Paweska, Janusz Tadeusz; Jansen van Vuren, Petrus; Storm, Nadia; Markotter, Wanda; Kemp, Alan (MDPI, 2021-11)
    This study aimed to determine the vector competence of bat-associated nycteribiid flies (Eucamsipoda africana) for Marburg virus (MARV) in the Egyptian Rousette Bat (ERB), Rousettus aegyptiacus. In flies fed on subcutaneously ...
  • Vector lattices with a Hausdorff uo-Lebesgue topology 
    Deng, Yang; De Jeu, Marcel (Elsevier, 2022-01)
    Please read abstract in the article.
  • Verbal working memory in second language reading comprehension : a correlational study 
    Pretorius, Melissa J.; Le Roux, Mia; Geertsema, Salome (Sage, 2022-08)
    This study investigated the correlation and predictive capacity of verbal working memory (VWM) to the reading comprehension of children in their first language (L1) and second language (L2). The term verbal working memory ...
  • Verification of the folkloric and anecdotal antidiabetic effects of Hypoxis hemerocallidea (Fisch., CA Mey. & Ave-Lall) and isolated, beta-sitosterol using early-stage type II spontaneous diabetic mutant BKS-Lepr(db) mice 
    Mkolo, Nqobile Monate; Olaokun, O.O.; King, P.H.; Janse van Rensburg, IIse; Eloff, Jacobus Nicolaas; Naidoo, Vinny (BMC, 2022-06-20)
    BACKGROUND : Previous studies in our laboratory in ex vivo assays have demonstrated H. hemerocallidea extract as potential antidiabetic agent through increased insulin release from pancreatic beta cells. Thus, for this ...
  • Verwerwing van Afrikaanse foneme deur kinders van 24–72 maande 
    Pringle, Chanté; Le Roux, Mia; Geertsema, Salome; Graham, Marien Alet (Suid Afrikaanse Akademie vir Wetenskap en Kuns, 2022-06)
    PURPOSE AND AIMS OF THE STUDY : The primary aim of this study was to determine and describe the ages of acquisition of the various Afrikaans phonemes according to the theoretical framework of 75% correct production by ...
  • Victimhood gone viral : portrayals of extra-lethal violence and the solidarity of victims in the case of South African farm violence activists 
    Holmes, Carolyn E. (Routledge, 2022)
    In her 2013 paper, Lee Ann Fujii proposes the concept of “extra-lethal violence,” which explores the ways that actors use violence over and above a standard of lethality to achieve group goals, like in-group cohesion. This ...
  • Viewpoint : Rigorous monitoring is necessary to guide food system transformation in the countdown to the 2030 global goals☆ 
    Fanzo, Jessica; Haddad, Lawrence; Schneider, Kate R.; Bene, Christophe; Covic, Namukolo M.; Guarin, Alejandro; Herforth, Anna W.; Herrero, Mario; Sumaila, U. Rashid; Aburto, Nancy J.; Amuyunzu-Nyamongo, Mary; Barquera, Simon; Battersby, Jane; Beal, Ty; Molina, Paulina Bizzotto; Brusset, Emery; Cafiero, Carlo; Campeau, Christine; Caron, Patrick; Cattaneo, Andrea; Conforti, Piero; Davis, Claire; DeClerck, Fabrice A.J.; Elouafi, Ismahane; Fabi, Carola; Gephart, Jessica A.; Golden, Christopher D.; Hendriks, Sheryl L.; Huang, Jikun; Laar, Amos; Lal, Rattan; Lidder, Preetmoninder; Loken, Brent; Marshall, Quinn; Masuda, Yuta J.; McLaren, Rebecca; Neufeld, Lynnette M.; Nordhagen, Stella; Remans, Roseline; Resnick, Danielle; Silverberg, Marissa; Cullen, Maximo Torero; Tubiello, Francesco N.; Vivero-Pol, Jose-Luis; Wei, Shijin; Moncayo, Jose Rosero (Elsevier, 2021-10)
    Food systems that support healthy diets in sustainable, resilient, just, and equitable ways can engender progress in eradicating poverty and malnutrition; protecting human rights; and restoring natural resources. Food ...