OpenUCT Home
→
Browsing by Author

Browsing by Author "Buffler, Andy"

Now showing items 1-20 of 28

A compact high-energy particle detector for low-cost deep space missions

Author: Kemp, Dayne Hilton Date: 2015 Over the last few decades particle physics has led to many new discoveries, laying the foundation for modern science. However, there are still many unanswered questions which the next generation of particle detectors could address, potentially ... Read more
DemOnline

Author: Buffler, Andy ; Malahe, Michael Date: 15 Sep 2014 DemOnline is a collection of demonstrations and VPython scripts for use in an introductory physics course. The website catalogues both lecture demonstrations and VPython scripts. The lecture demos section contains descriptions of the setup ... Read more c b
Determination of energy spectra of proton therapy beams

Author: Nchodu, M R Date: 2002 A technique has been developed for measuring the energy spectra of high-energy proton therapy beams in situ under conditions similar to those used for radiotherapy at the South African National Accelerator Centre. The method is based on proton ... Read more
Developing multi-representational problem solving skills in large, mixed-ability physics classes

Author: Leigh, Gregor Date: 2004 First time entering students at South African technikons (even those enrolling for science courses) are typically characterised by having poor numeracy and problem solving skills coupled with poor attitudes towards learning physics. Their ... Read more
Effectiveness of a GUM-compliant course for teaching measurement in the introductory physics laboratory

Author: Pillay, Seshini ; Buffler, Andy ; Lubben, Fred ; Allie, Saalih Date: 2008 An evaluation of a course aimed at developing university students' understanding of the nature of scientific measurement and uncertainty is described. The course materials follow the framework for metrology as recommended in the Guide to the ... Read more
Fast neutron scattering analysis

Author: Buffler, Andy Date: 1998 The scattering of a beam of fast monoenergetic neutrons is used to determine elemental compositions of small (0.2-1 kg) samples of materials. Particular emphasis is placed on the measurement of concentrations of the elements H, C, N and O, ... Read more
First year students' understanding of measurements in physics laboratory work

Author: Volkwyn, Trevor Stanton Date: 2005 Recent collaborative work by the physics education research group at the University of Cape Town (South Africa) and the science education research group at the University of York (United Kingdom) has produced a suite of research instruments ... Read more
Identification of platinum ores via trace element signatures

Author: Hassan, Maisson Mohamed Zeinelabieden Date: 2011 This project studies the natural variation in the elemental composition of processed platinum ore from different extraction locations in South Africa in order to assess whether this provides sufficient information for the elemental fingerprinting" ... Read more
Impact of a conventional introductory laboratory course on the understanding of measurement

Author: Volkwyn, Trevor S ; Allie, Saalih ; Buffler, Andy ; Lubben, Fred Date: 2008 Conventional physics laboratory courses generally include an emphasis on increasing students' ability to carry out data analysis according to scientific practice, in particular, those aspects that relate to measurement uncertainty. This study ... Read more c b
Improving the selectivity of the radio-labelling of ion exchange resin tracers for positron emission particle tracking

Author: Van Heerden, Michael Rudi Date: 2015 Positron emission particle tracking (PEPT) is a technique which non-invasively tracks tracer particles labelled with a positron emitting radionuclide in a system of flow. The tracers are tracked through the detection in a PET scanner, of the ... Read more
Investigations into a positron emission imaging algorithm

Author: Bickell, Matthew Date: 2012 A positron emission imaging algorithm which makes use of the entire set of lines-of-response in list-mode form is presented. The algorithm parameterises the lines-of-response by a Cartesian mesh over the field-of-view of a Positron Emission ... Read more
Measurement of fluence at the D-line fast neutron facility at iThemba LABS

Author: Musonza, Emmanuel Tapiwa Date: 2011 Measurements of fluence were made for the neutron beams produced at the fast neutron beam facility of iThemba LABS, using an NE213 organic liquid scintillator detector and a 238U fission ionisation chamber. Neutron beams were produced by ... Read more
Measurement of neutron fluence at En=20-100 MeV using a stacked scintillator spectrometer

Author: Makupula, Siphiwo Aquinas Date: 2003 The present work demonstrates a new application of a stacked spectrometer which has been developed in the Physics Department of the University of Cape Town. The spectrometer used in the present work consists of two identical segments of NE213 ... Read more
Measurement of neutron production from an ¹⁸O target for the production of radioactive-ion beams at iThemba LABS

Author: Ngcobo, Phumlani Zipho Date: 2018 iThemba LABS, in the South African Isotope Facility (SAIF) project, proposes to produce radioactive ion beams by the fission of uranium. A natural way to fission uranium is to use high-intensity proton beams from a cyclotron. However, ... Read more
Model-based teaching and learning of kinematics in an introductory physics course for underprepared students

Author: Ibrahim, Bibi Bashirah Date: 2009 This study concerns the application of a model-based approach for problem solving and conceptual understanding, in the context of kinematics, relating to the "foundation" component of an introductory physics course designed for students who ... Read more
Neutron activation analysis of plantinum converter and furnace mattes using a D-T sealed tube neutron generator

Author: Majawa, Louis John Date: 2013 Neutron activation analysis (NAA) has been applied to furnace matte and converter matte samples with the objective of studying the natural variation in the elemental composition of the samples, with a view to characterize the samples for their ... Read more
New technique for radiolabelling tracer with 64CU for positron emission particles tracking (PEPT) experiments

Author: Liu, Cong Date: 2015 Positron emission particle tracking (PEPT) is a non-invasive technique for studying the flow of particulate systems within industrial equipment. The technique tracks a tracer particle labelled with a positron emitting radionuclide moving ... Read more
A one-way coupled DEM-CFD scheme to mode free-surface flows in tumbling mills

Author: Malahe, Michael Date: 2012 There is a great need in the minerals processing industry for accurate prediction of slurry flows in tumbling mills. This flow is currently best understood through empirical, mechanistic and computational models. In the case of computational ... Read more
PHY1004W - Matter & Interactions

Author: Buffler, Andy ; Fearick, Roger ; Govender, Indresan ; Peshier, Andre Date: 18 Sep 2014 PHY1004W is a first-year, calculus-based introductory Physics course for Science students intending to continue with second-year Physics. MODERN MECHANICS: Matter and interactions, conservation laws, the momentum principle, atomic nature of ... Read more c b
PHY1023H - Principles of Physics A

Author: Buffler, Andy ; Morrison, Angus Date: 18 Sep 2014 PHY1023H is a a first-year, calculus-based introductory course primarily for students on the General Entry for Programmes in Science (GEPS). The first half of this course provides students with the essential tools and skills that are required ... Read more c b