In this study, a system for the collection of bioaerosols emitted from the mail sorting process was designed and characterized. Two different wetted-wall cyclones, the JBPDS cyclone and the glass cyclone sampler (GCS), were evaluated as system collection devices. These devices operate at 780 L/min and have a D50 of ~ 1 μm. A trimming impactor with a D50 of 10 μm was used upstream of the collection devices. Using two reference probes, the cyclone liquid outputs were compared with aerosol collected on filters and the output of an Aerosol-to-Hydrosol Transfer Stage (AHTS). The mass emission rate of the postal sorting machine was 3.15 mg/min and found not to vary significantly with flow rates above 700 L/min. On average, greater than 66% of the mass collected had a Da < 10 μm. Using a Coulter Counter, the volume median diameter (volume equivalent) for both device hydrosol outputs was 4.18 μm. For the effluent aerosol, the volume median diameter was 12.5 μm. For a bioaerosol release, this study found that greater than 65% (by volume) of the material released had a Da greater than 7.2 μm. Using filters, it was found that on average, 95% of the bioaerosol particles emitted had a Da less than 10 μm. According to the reference data, the expected number of bioaerosol particles in 1.5 times that collected by the GCS and 5.5 times that collected by the JBPDS cyclone for a one milligram release. The time constant for the system in response to a letter release was found to be 1.3 minutes for the GCS and 1.75 minutes for the JBPDS cyclone. A final note to this study states that the probe dimensions were incorrectly developed, therefore affecting the aspiration efficiency of the probes. In turn, this may have affected the outcome of some of the results. A plot is given at the end of the paper showing to what extent the results may have been affected. It is recommended that further experimental studies be performed to verify the results in this study.

Thesis (M.P.A.)--University of Hong Kong, 2001. / Includes bibliographical references (leaves 172-177).

published_or_final_version / Architecture / Master / Master of Architecture

No abstract available. / Thesis (MBA)-University of Natal, Durban, 2002.

Thesis (M.P.A.)--University of Hong Kong, 2000. / Includes bibliographical references (leaves 147-151).

Thesis (M.P.A.)--University of Hong Kong, 2000. / Includes bibliographical references (leaves 147-151). Also available in print.

Thesis (M.P.A.)--University of Hong Kong, 2001. / Includes bibliographical references (leaves 172-177). Also available in print.

Dear All, Eros moves. In January of 2007 I decided to do research about Eros and his presence in architecture. I decided to do a thesis about LOVE. This thesis it is a story about me, since when you love architecture you give yourself completely to it. What you see in these pages, it's me: my life, my desires, my passion for architecture, my fears, my bad moments, my good moments, my joy--all of me. Desire in architecture seemed to me at that moment something with which I didn’t know how to start working. It was so abstract that, when considered, almost anything can be a desire, and maybe it is. But this thesis is a story of how desire opened for me an infinite world of imagination and wonder--how Eros made me love the drawing, the line, the color, the wall, the shadow, the material....the architecture. I have chosen to explore desire through the designing of a post office, theatre school, and retail shops. The site is in Washington DC, in between 7th and 8th streets SE, adjacent to Eastern Market. / Master of Architecture

The South African Post Office is investing large amounts of money in IT. Organisations were encouraged by the notion that investing in IT correlates with higher returns and the delivery of expected results by replacing the human component in organisations. The employment of IT within business has often resulted in the replacement of old problems with new and the expected business benefits of IT not realised. The primary research objective was to determine the relationship between IT expenditure and the financial performance of a firm. The secondary research objective was to explore the perceived value of IT investment in SAPO. / Graduate School of Business Leadership / MBL

The Public Internet Terminal (PIT) is the Department of Communication initiative that aims to bring electronic communication to all South African citizens. It was launched in 1998 as a joint venture between the Department of Communications (DoC) and the South African Post Office (SAPO).This study postulates that the massive roll out of the Public Internet terminals (PIT‘s) has enhanced the lives of the poor by providing easy access to government services. It further assumes that the PITs are able to facilitate access of eService‘s to all the citizens in particular where electronic services are not freely available such as in the rural and remote under serviced areas of South Africa. In addition, it explores the envisaged value added initiatives stipulated in the memorandum of understanding entered in between the Department of Communication (DOC) and the South African Post Office (SAPO).