Thesis--Wisconsin. / Vita. Includes bibliographical references (leaves 135-144).

Thesis (M.S.)--University of Wisconsin--Madison, 1957. / Typescript. eContent provider-neutral record in process. Description based on print version record.

Thesis (doctoral)--Lund University, 1992. / Added t.p. with thesis statement inserted.

Inaug.-Diss.--Leipzig. / Vita.

Thesis (M.S.)--Oregon State University, 2007. / Printout. Includes bibliographical references (leaves 51-53). Also available on the World Wide Web.

No description available.

The properties of sub-monolayer Helium-3 films adsorbed on two totally different but planar substrates, Mylar^† film and exfoliated graphite have been studied using NMR. The nuclear magnetic relaxation times T₁ and T₂ have been measured as functions of fractional monolayer completion, temperature, substrate plane orientation and Larmor frequency using a specially designed and constructed NMR spectrometer system. The results obtained with a Mylar film substrate are consistent3with the formation of patches of solid ³He at regions of preferential adsorption on the substrate. Measurements of T₂ m very low coverage ³He films on exfoliated graphite also indicate that the adsorbate forms areas of relatively high density solid, in agreement with the thermodynamic analysis of Elgin and Goodstein. Finally, detailed measurements of T₂ as a function of all of the above parameters at low areal densities will help us to characterise the relaxation processes for the fluid phase of ³³He on exfoliated graphite. ^†Mylar is the tradename of poly(ethelene-terephthalate) film, marketed by Du Pont.

Preterm low birth weight infants remain at risk of impaired growth and developmental delay in childhood, compared with full-term babies. The main aim of the research project was to devise and test a preterm infant feeding strategy (PIFS) for the time from hospital discharge until one-year gestation corrected age (GCA). The strategy recommended the early onset of weaning, the use of foods with a higher energy and protein content than standard milk formula and recommended foods, which are rich sources of iron and zinc. To assess the effectiveness of the preterm infant feeding strategy, 68 preterm infants, mean birth weight 1.47 (SD 0.43) kg and mean gestational age 31.3 (SD 2.9) weeks, were randomised to either the PIFS group (n=37) or a current best practice control group (n=31), for one year. Energy, protein and mineral intakes at three points, zero months GCA, six months GCA and twelve months GCA, were determined from 7-day weighed records. The infants were assessed anthropometrically at the same ages, and blood sampled twice to discover any differences in growth or nutrient status between the groups, which could be a consequence of dietary intake. Analyses of dietary, growth and biochemical data showed the following significant differences between the PIFS intervention group compared with the control group. Improvements in haemoglobin and serum iron levels at six months GCA; increased intakes of energy, protein and carbohydrate at six months GCA and iron at twelve months GCA; enhanced length growth velocity between zero and twelve months GCA. A significant positive effect of treatment on standard deviation length scores and catch-up length growth was also observed. PIFS significantly influenced dietary intakes with consequent beneficial effects on length growth and iron status. This novel strategy should be adopted as the basis of feeding guidelines for preterm infants after hospital discharge.

No description available.

Thesis (MTech (Electrical Engineering))--Cape Peninsula University of Technology, 2016. / Optimum communication can only be achieved with a very sensitive front-end section in the receiver on a satellite because the transmitted signal from the ground station must travel hundreds of kilometres through the earth's atmosphere to a low earth orbit (LEO) satellite. This dissertation presents the design of the front end section of the receiver suitable for use in a nano-satellite. Specifically, various transistor technologies are evaluated by designing five low noise amplifiers to determine the optimum performing amplifier. The bandwidth of the front end section was controlled by designing coupled line microstrip filter. For consistency, the same design technique was followed in the design of each LNA. Simulations were performed and the results were compared to the actual measured results of the constructed amplifiers to facilitate conclusions to be made. Design specifications for the LNAs were obtained from the F'SATI Space CubeSat Programme Technical Specification document. To control the bandwidth of the front end section, various types of band-pass filters were investigated, resulting in a coupled line band-pass filter being simulated and implemented. The simulated results were compared to the measured results of the constructed filter. In the final stage of this dissertation, comparisons of each amplifier’s performance were made, resulting in the final recommendation for this project.