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Browsing Journal Articles by Faculty "Faculty of Science"

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[1,2-Bis(diphenylphosphino)ethane]-diiodidoplatinum(II) dichloromethane disolvate

Author: Sivaramakrishna, Akella ; Su, Hong ; Moss, John R Date: 2007 In the title compound, [PtI2(C26H24P2)]·2CH2Cl2, the PtI2(dppe) [dppe = 1,2-bis(diphenylphosphino)ethane] molecules possess twofold rotation symmetry. The Pt coordination displays a square-planar arrangement, with the sum of the angles ... Read more
1,7-Dimethylpentacyclo[5.4.0.02,6.-03,10.05,9]undecane-8,11-dione

Author: Chakka, Sai Kumar ; Onajole, Oluseye K ; Govender, Thavendran ; Maguire, Glenn E M ; Su, Hong ; Kruger, Hendrik G Date: 2010 The structure of the title compound, C13H14O2, a pentacycloundecane cage derivative, exhibits unusual Csp3 —Csp3 singlebond lengths ranging from 1.505 (3) to 1.607 (2) A˚ and strained bond angles as small as 88.7 (1) and as large as 121.0 ... Read more
A 1000-year carbon isotope rainfall proxy record from South African baobab trees (Adansonia digitata L.)

Author: Woodborne, Stephan ; Hall, Grant ; Robertson, Iain ; Patrut, Adrian ; Rouault, Mathieu ; Loader, Neil J ; Hofmeyr, Michele Date: 2015 A proxy rainfall record for northeastern South Africa based on carbon isotope analysis of four baobab ( Adansonia digitata L.) trees shows centennial and decadal scale variability over the last 1,000 years. The record is in good agreement ... Read more c b
The 2004 re-assessment of the South African sardine and anchovy populations to take account of revisions to earlier data and recent record abundances

Author: de Moor, Carryn L ; Butterworth, Doug S Date: 2009 Hydroacoustic surveys off the coast of South Africa over the early years of the 21st century indicated that both the sardine Sardinops sagax and anchovy Engraulis encrasicolus populations had simultaneously reached record abundances. The South ... Read more
2MASS J0516288+260738: Discovery of the first eclipsing late K + Brown dwarf binary system?

Author: Schuh, S L ; Handler, G ; Drechsel, H ; Hauschildt, P ; Dreizler, S ; Medupe, R ; Karl, C ; Napiwotzki, R ; Kim, S-L ; Park, B-G ; Wood, M A ; Paparó, M ; Szeidl, B ; Virághalmy, G ; Zsuffa, D ; Hashimoto, O ; Kinugasa, K ; Taguchi, H ; Kambe, E ; Leibowitz, E ; Ibbetson, P ; Lipkin, Y ; Nagel, T ; Göhler, E ; Pretorius, M L Date: 2003 We report the discovery of a new eclipsing system less than one arcminute south of the pulsating DB white dwarf Read more
30 Days in the life: daily nutrient balancing in a wild chacma baboon

Author: Johnson, Caley A ; Raubenheimer, David ; Rothman, Jessica M ; Clarke, David ; Swedell, Larissa Date: 2013 For most animals, the ability to regulate intake of specific nutrients is vital to fitness. Recent studies have demonstrated nutrient regulation in nonhuman primates over periods of one observation day, though studies of humans indicate that ... Read more c b
5-Iodo-1-Arylpyrazoles as Potential Benchmarks for Investigating the Tuning of the Halogen Bonding

Author: Dumitrescu, Denisa ; Shova, Sergiu ; Man, Isabela C ; Caira, Mino R ; Popa, Marcel Mirel ; Dumitrascu, Florea Date: 17 Dec 2020 5-Iodo-1-arylpyrazoles are interesting templates for investigating the halogen bond propensity in small molecules other than the already well-known halogenated molecules such as tetrafluorodiiodobenzene. Herein, we present six compounds with ... Read more c b
A (giant) void is not mandatory to explain away dark energy with a Lemaître-Tolman model

Author: Célérier, M-N ; Bolejko, K ; Krasiński, A Date: 2010 Context. Lemaître-Tolman (L-T) toy models with a central observer have been used to study the effect of large scale inhomogeneities on the SN Ia dimming. Claims that a giant void is mandatory to explain away dark energy in this framework are ... Read more
A Balanced Approach to IT Project Management

Author: Smith, Derek ; Brock, Susan ; Hendricks, Danyal ; Linnell, Stephen Date: 2007 The primary objectives of this study were to identify how IT projects can be managed using the Balanced Scorecard approach. Although the research is positioned to have potential application within international project management discipline, ... Read more
A brief history of marine bio-invasions in South Africa

Author: Griffiths, C L ; Mead, A ; Robinson, T B Date: 2009 Marine species have been introduced continuously into South Africa for more than 400 years, since the arrival of the first European explorers. Various waves of introduction can be identified over this period, each associated with a different ... Read more
A case study from the southern Cape linefishery 1: The difficulty of fishing in a changing world

Author: Gammage, Louise C ; Mather, Charles Date: 2017 Variability on multiple temporal and spatial scales exposes fishers and fishing communities to multiple stressors. The impact and interplay of these stressors need to be considered to improve our understanding of social-ecological linkages ... Read more
A case study from the southern Cape linefishery 2: Considering one’s options when the fish leave

Author: Gammage, Louise C ; Mather, Charles Date: 2017 Fishers in the small-scale, commercial linefishery in the southern Cape, South Africa, are exposed to variability and change in the marine social-ecological system of which they are a part. Faced with multi-scalar changes within this complex ... Read more
A cataclysmic key program for SALT

Author: Warner, Brian Date: 2006 The study of cataclysmic variable stars has a long history in South Africa. A brief overview of this history is followed by indications of where the new Southern African Large Telescope (SALT) is likely to make major contributions to this ... Read more
A catalogue of galaxies behind the southern Milky Way: II. The Crux and Great Attractor regions ($lapprox$ 289° to 338°)

Author: Woudt, P A ; Kraan-Korteweg, R C Date: 2001 In this second paper of the catalogue series of galaxies behind the southern Milky Way, we report on the deep optical galaxy search in the Crux region ( Read more
A centile chart for birth weight for an urban population of the Western Cape

Author: Theron, G B ; Thompson, M L Date: 1995 Evidence from large epidemiological studies has supported concern that being born light for gestational age (LiGA) may be detrimental. The incidence of LiGA babies is an important indicator of the health of women of reproductive age in deprived ... Read more
A change of the seaward boundary of Goukamma Marine Protected Area could increase conservation and fishery benefits

Author: Götz, Albrecht ; Kerwath, Sven E ; Attwood, Colin G ; Sauer, Warwick H H Date: 2009 Goukamma Marine Protected Area (MPA) on the South African temperate South Coast has been shown to be effective in maintaining a spawning stock of roman, Chrysoblephus laticeps (Sparidae). The larval ecology and the oceanographic conditions ... Read more
A combinatorial interpretation for Schreyer's tetragonal invariants

Author: Castryck, Wouter ; Cools, Filip Date: 2015 Schreyer has proved that the graded Betti numbers of a canonical tetragonal curve are determined by two integers b(1) and b(2), associated to the curve through a certain geometric construction. In this article we prove that in the case of a ... Read more
A comparison of rapid bioassessment protocols used in 2 regions with Mediterranean climates, the Iberian Peninsula and South Africa

Author: BONADA, NÚRIA ; DALLAS, HELEN ; RIERADEVALL, MARIA ; PRAT, NARCÍS ; DAY, JENNY Date: 2006 Abstract. The ability of 2 Rapid Bioassessment Protocols (RBPs) to assess stream water quality was compared in 2 Mediterranean-climate regions. The most commonly used RBPs in South Africa (SAprotocol) and the Iberian Peninsula (IB-protocol) ... Read more
A component assembly approach to digital library systems

Author: Eyambe, Linda ; Suleman, Hussein Date: 2005 With the advent of the Internet came the promise of global information access. In keeping with this promise, Digital Libraries (DLs) began to emerge across the world as a method of providing structured information to their users. These DLs ... Read more c b n
A decision-making framework for restoring riparian zones degraded by invasive alien plants in South Africa

Author: Holmes, P M ; Richardson, D M ; Esler, K J ; Witkowski, E T F ; Fourie, S Date: 2005 Riparian habitats in many parts of South Africa are severely degraded by invasive alien plants, especially trees. These invasions reduce water yields from catchments and affect riverine functioning and biodiversity. Initiatives are under way ... Read more

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