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  1. An electronically focused multiple beam side scan sonar
    Fox, Peter, 2017-12-11T10:14:41Z, University of Cape Town
    Phased arrays have been in use since World War II but their commercial application has been constrained by the bulk and cost of the beam forming system. High resolution side scan sonar systems have many operational parameters that may only be extended with the aid of phased arrays, the resolution an ...
  2. The test meal and exocrine pancreatic function
    Brom, Bernard, 2017-12-11T10:15:08Z, University of Cape Town
    The pancreas is a very inaccessible organ situated in the retroperitoneal space. Study of its physiology and function was first confined to animals, where it was possible to construct a pancreatic fistula and thus collect pure pancreatic juice. In addition, pancreatic tissue from animals was also ob ...
  3. Carbohydrate metabolism during active and passive post-exercise recovery
    Peters, Edith M, 2017-12-11T10:15:28Z, University of Cape Town
    It is known that light muscular activity performed during the immediate post-exercise recovery period, increases the rate at which lactate and protons are removed from the circulation. This study examined the effect which this light activity had on muscle glycogen and lactate levels, as well as the ...
  4. The effect of oral creatine supplementation on one hour cycling performance and metabolism
    Bellinger, Brett, 2017-12-11T10:15:32Z, University of Cape Town
    The effect of oral creatine (Cr) supplementation with 20 g/day for 7 days on one-hour cycling performance and metabolism was investigated in a double-blind placebo controlled study. Twenty endurance-trained male cyclists volunteered for the study that was approved by the University of Cape Town ethi ...
  5. Studies on aspects of the physiology and pathophysiology of pancreatic polypeptide
    Sive, Alan Avrom, 2017-12-11T10:15:53Z, University of Cape Town
    Pancreatic polypeptide (PP) is a 36 amino-acid residue peptide which has recently been recognised in pancreatic endocrine cells. Although PP has a number of effects on gastrointestinal and pancreatic exocrine function, its physiological function has not been clarified. Studies were undertaken to elu ...
  6. Arrhythmogenic potential of alpha-adrenoceptor stimulation in the rat heart
    Flint, Nigel Stuart, 2017-12-11T10:16:18Z, University of Cape Town
    A recent proposal is that the alpha₁-adrenoceptor may mediate the arrhythmogenic effect of catecholamines during acute myocardial ischaernia. The purpose of this thesis was to explore the role of alpha₁ and alpha₂-adrenoceptor stimulation on vulnerability to ventricular fibrillation in the norrnoxic ...
  7. A mathematical model of browse and herbage production in communal grazing lands of semi-arid regions
    Nhlengetfwa, Melusi, 2017-12-11T10:16:42Z, University of Cape Town
    The main purpose of this work is to extend an existing model of growing cattle and grass production in a semi-arid rangeland.The existing model which is basically Dye"s (1983) model in differential equation form handles: i) the growth and performance of cattle measured in terms of weight, ii) the in ...
  8. Proteases of the neutrophil membrane represent an alternative fibrinolytic pathway to that mediated by plasmin
    Adams, Susan Ann, 2017-12-11T10:17:05Z, University of Cape Town
    The cellular components of the blood, which become associated with fibrin through specific cellular adhesive processes, play a significant role in the breakdown of fibrin. Fibrinolysis by elastase and cathepsin G, enzymes present within the azurophilic granules of the neutrophil, has previously been ...
  9. The neutron sensitivities of Geiger-Müller counters
    Jones, D T L, 2017-12-11T10:17:30Z, University of Cape Town
    Neutron beams are always accompanied by gamma rays. Because neutrons and gamma rays have different biological effects, it is essential that the neutron and gamma dose components be determined when neutron beams are used for radiotherapy and radiobiology. Since gamma ray dosimeters almost always also ...
  10. A comparison of the effects of xenobiotics on hepatic haem metabolism
    Ziman, Melanie Ruth, 2017-12-11T10:19:12Z, University of Cape Town
    Hepatic microsomal cytochrome P-450 has previously been postulated to be an important factor in determining the rates of hepatic haem biosynthesis and biodegradation. The basis for this proposal is that the haem moiety of cytochrome P-450 appears to be in equilibrium between binding to apocytochrome ...