Traumatic superior mesenteric arteriovenous fistula

CITATION: Du Toit, D.F & Rademan, F. 1987. Traumatic superior mesenteric arteriovenous fistula - a case report. S Afr Med J, 71(9):587-588.The original publication is available at http://www.samj.org.zaENGLISH ABSTRACT: In a case of traumatic superior mesenteric arteriovenous fistula resulting from a stab wound in the abdomen clinical signs of high-output cardiac failure or portal hypertension were absent. Selective angiography was useful in confirming and locating the fistula. The patient made a good recovery after resection of the aneurysm and fistula and insertion of a prosthetic graft.AFRIKAANSE OPSOMMING: Geen opsomming beskikbaarPublisher’s versio

Investigating the business value of information management

Research on the effect of information management on organizational performance is an important issue. The primary problem of the business value of information is embedded in the following reasoning: information management creates business value indirectly but creates business costs directly, making the evaluation and measurement of information management and the benefits thereof difficult for organizations. In this study an empirical survey was conducted in ten large South African organizations to establish practices and norms in managing the business value of information management, information management investment and benefits evaluation. The most common criteria considered to be important were the ability to adapt and support business changes and the stability and quality of information management services to the user community

WAT-A-GAME: sharing water and policies in your own basin

40th Annual Conference, Int. Simulation And Gaming Association, Singapour, SGP, 29-/06/2009 - 03/07/2009International audienceAfter having designed and used various games for learning and supporting water management and governance, many similarities appear. However, the components, topologies, and social and political setting of the basins are different. Therefore we have started designing andvalidating a new generic game platform, WAT-A-GAME, alias AMANZI. This new game aims at facilitating exploration and transformation of water management and water use at the small catchment scale. It gives a simple but enlightening view of the various consequences of individual and collective choices, including regulation policies. After comparing it with some previous games, we discuss its main rationales and features. We show how it can be adapted to very different settings, how players can usefully contribute to designing an instance, and how it can especially address dialogue between multi-level stakeholders. We describe an application in South-Africa, in the Inkomati basin and the preliminary results of this instance

Recurrent pancreatitis after partial ileal bypass for hyperlipidaemia : a case report

CITATION: Du Toit, D. F., Knott-Craig, C. & Laker, L. 1985. Recurrent pancreatitis after partial ileal bypass for hyperlipidaemia : a case report. South African Medical Journal, 68:483-484.The original publication is available at http://www.samj.org.zaThe case of a 28-year-old man with alcohol-induced bouts of recurrent acute pancreatitis after a partial ileal bypass performed for hyperlipidaemia is presented. Serial computed tomography proved valuable for assessing the resolution of the pancreatic mass. Peripheral parenteral hyperalimentation for 6 weeks had a beneficial effect on the course of the pancreatitis and proved to be useful for nutritional support.Publisher’s versio

Cost of breast preservation surgery for cancer

CITATION: Smit, B. J., Liebenberg, T. J. & Du Toit, D. F. 1992. Cost of breast preservation surgery for cancer. South African Medical Journal, 82:481.The original publication is available at http://www.samj.org.za[No abstract available]Publisher’s versio

SWIRP (Submm-Wave and Long Wave InfraRed Polarimeter); Development and Characterization of a Sub-Mm Polarimeter for Ice Cloud Investigations

A major source of uncertainty in climate models is the presence, shape and distribution of ice particles in the uppermost layers of the clouds. The effects of this component are poorly constrained, turning ice particles into an almost-free variable in many climate models.NASA-GSFC is developing a new instrument aimed at measuring the size and shape of ice particles. The instrument consists of two sub-mm polarimeters (at 220 and 670 GHz) coupled with a long-wave infrared polarimeter at 10 micron. Each polarimeter has identical V-pol and H-pol channels; the axes of polarization are defined geometrically by the orientation of the waveguide elements, and the purity has been measured in the lab. The instrument is configured as a conical scanner, suitable for deployment as a payload on a small satellite or on a high-altitude sub-orbital platform. From a 400 km orbit, the instrument has a 3dB spatial resolution of 20 (10) km at 220 (670) GHz and a swath of 600 km over 180 degrees of view.The BAPTA (Bearing And Power Transfer Assembly) carries heritage from the SSMIS design, now in its 22nd year of on-orbit operation, but with a much reduced SWaP (Size Weight and Power) footprint, suitable for a small satellite.The main components of the instrument have been fabricated and are undergoing final testing prior to their integration as a single unit. The sub-mm channels have dedicated secondary reflectors which illuminate a shared primary reflector. The receiving units are placed behind the focal point of the optical arrangement, so that all beams equally illuminate the primary reflector and are almost co-located on the ground (within a single 220 GHz footprint). Primary and secondary beam patterns have been measured and verified to match the as-designed expectations. A Zytex (TM) window is deployed to protect the secondary reflectors and the feed horns from debris and other contaminants, and to reduce the heat load from the active (hot) IR calibration unit. The insertion loss of Zytex has been measured and is accounted in the calibration equation of the sub-mm channels.The radiometric performance of the sub-mm receivers has been characterized in the lab and under operational conditions of temperature and pressure.This paper discusses the design constraints on the sub-mm components, details of the scientific goals and their flowdown, and describes the characterization of the polarimeters. Options to optimize the layout and distribution of the masses within the assembly, with the goal of making the instrument even more compact and fully-compatible with cubesat-class satellites will be presented

Transformasíe soos deur vuur

In sy boek Sons of Adam stel dr. S. M. Zwemer in hoofstuk 5 Moses en Simson naas en teenoor mekaar

Wetenskaplike beoefening van die teologie aan die teologiese skool.

Hierdie artikel kan, weens verskillende oorsake wat hier nie genoem hoef te word nie, slegs ’n vlugtige terugblik in die verlede wees, om dan na te speur wat die moontlikhede vir die toekoms is

Dealing with a traumatic past: the victim hearings of the South African truth and reconciliation commission and their reconciliation discourse

In the final years of the twentieth and the beginning of the twenty-first century, there has been a worldwide tendency to approach conflict resolution from a restorative rather than from a retributive perspective. The South African Truth and Reconciliation Commission (TRC), with its principle of 'amnesty for truth' was a turning point. Based on my discursive research of the TRC victim hearings, I would argue that it was on a discursive level in particular that the Truth Commission has exerted/is still exerting a long-lasting impact on South African society. In this article, three of these features will be highlighted and illustrated: firstly, the TRC provided a discursive forum for thousands of ordinary citizens. Secondly, by means of testimonies from apartheid victims and perpetrators, the TRC composed an officially recognised archive of the apartheid past. Thirdly, the reconciliation discourse created at the TRC victim hearings formed a template for talking about a traumatic past, and it opened up the debate on reconciliation. By discussing these three features and their social impact, it will become clear that the way in which the apartheid past was remembered at the victim hearings seemed to have been determined, not so much by political concerns, but mainly by social needs

The relationship of overweight and obesity to the motor performance of children living in South Africa

Objectives: This study aimed to determine the relationship between overweight and obesity and the motor performance of nine- to 13-year-old South African children.Design: The study used a one-way cross-sectional design based on baseline measurements.Settings and subjects: The research group comprised 280 Grade 4, 5 and 6 learners (128 boys and 152 girls) from two schools that represented a distribution of socio-economic status, race and gender.Outcome measures: Anthropometric [(body mass index (BMI) and fat percentage] and motor performance measurements (fine manual control, manual coordination, body coordination and strength and agility) were obtained by means of the Fitnessgram and the Bruininks-Oseretsky Test of Motor Proficiency-II. International age-specific cut-off points were used to classify the children’s body composition as normal weight, overweight or obese. Data were analysed by means of descriptive statistics, correlation matrices and analysis of variance, followed by a Tukey post hoc analysis.Results: The results showed that running speed and agility decreased significantly with an increase in BMI. Muscular strength also decreased significantly with a smaller practical significance, while fine manual control, manual coordination, and body coordination showed the weakest relationship to BMI. Analysis of variance showed significant relationships between BMI and running speed and agility (p-value < 0.05). These relationships were influenced differently by gender and ethnicity.Conclusion: The motor performance of young South African children was negatively influenced by overweight and obesity. Intervention strategies are recommended to reduce the consequences of overweight and obesity in the overall development of such children.S Afr Fam Pract 2012;54(5):429-43