Thesis (M.P.H.)--University of Hong Kong, 2008. / Includes bibliographical references (p. 26-29).

Thesis (doctoral)--Ludwig Maximilians-Universität zu München, 1979.

Thesis (M.P.H.)--University of Hong Kong, 2006.

Thesis (M.S.)--University of Michigan, 1981.

published_or_final_version / Community Medicine / Master / Master of Public Health

<p>This thesis presents MCNPX simulations of the SCANDAL set-up used at the Theodor Svedberg Laboratory for neutron scattering cross-section measurements. The thesis describes processes and data important for the upcoming off-line data analysis. In the experiment, neutrons scattered off the target are converted to protons which are stopped in scintillator crystals. The results of presented simulations include a description of the proton spectra in dependence of the neutron-to-proton conversion angle, calculation of the hit position gates and a study of the converter describing the role of its chemical composition and also the role of other plastic scintillator on the proton spectra.</p> / QC 20100520

No description available.

It was the purpose of this investigation to bring together the ideas and procedures involved in the measurement of (n, 2n) reaction cross sections. Some of the inherent properties of the material under investigation (Holium) are involved in determining these relationships.

A research report submitted to the Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, in partial fulfilment of the requirements for the degree of Master of Medicine in the branch of Anaesthesiology April 2017 / Background: More than 166 000 women die annually from obstetric haemorrhage, with uterine atony being the most common causative factor (3). More than 50% of these deaths occur in Sub-Saharan Africa (4, 5). Synthetic oxytocin is integral in the prevention and management of postoperative post partum haemorrhage (PPH) and therefore it is essential for anaesthesiologists to have an adequate knowledge of this drug. Aim: The aim of the study was to describe the current knowledge and practise of the anaesthetists in the department of Anaesthesiology at the University of Witwatersrand (Wits), regarding Syntocinon® during caesarean section under spinal anaesthesia. Method: A validated questionnaire was distributed to anaesthetists working at Wits during departmental academic meetings in April 2015. Results: The results of the study showed that 60% of the participating anaesthetists had inadequate knowledge of IV Syntocinon® and that practice varied widely and was based on individual participants’ preference and was not consistent with international guidelines or protocols. Conclusion: Urgent staff education and implementation of a standardised practice guideline and protocol regarding usage and dosing of IV Syntocinon® is needed to prevent poor maternal outcomes and poor service delivery. / MT2017

Thesis (M.P.H.)--University of the Witwatersrand, Faculty of Health Sciences, 2013. / BACKGROUND – District hospitals provides level of care services that are part of the basic service package for district hospitals. Services applicable to district hospitals’ operating theatres include performance of elective and emergency surgical procedures. A study was conducted at Sekororo district hospital to evaluate the functioning of the operating theatre system. AIM: To describe the profile of patients, theatre down time and theatre throughput efficiencies at the district hospital for the period 1 April 2009 – 31 March 2011. METHODOLOGY: This was a cross sectional study based on a retrospective record review. The study setting was Sekororo District Hospital Operating Theatre. The population included records of all operations performed in the theatre during the study period. Theatre utilization was calculated as well as patient throughput to assess the internal operational efficiencies. The throughput of elective and emergency cases were compared. RESULTS: A total of 702 cases were performed during the study period. The majority of cases performed in the operating theatre were maternity cases (caesarean sections). Maternity cases accounted for 602 cases. The most common indication for caesarean sections (CS) is Cephalo-pelvic Disproportion (CPD) (49.2%). For the maternity cases, the majority were emergency cases (84.33%), and 15.67% elective cases. Theatre utilization for this period was 3% (3.6% for 2009/10 and 3.2% for 2010/11). There was a statistically significant difference (p<0.01) between the average throughput for emergency and elective cases – 25 minutes for emergency cases (confidence interval 20-35 minutes) versus 62.5 minutes for elective cases (confidence interval 38.75 – 78.75 minutes). CONCLUSION: The theatre utilization rate is extremely low for this study period. Patient throughput is much more efficient for emergency cases. Further studies are required to determine resource allocation to the operating theatre that resulted in the low theatre utilization.