Inaug.-diss.--Giessen. / Lebenslauf. "Literatur-verzeichnis" and "Zeitschriften": 4th and 5th prelim. leaves.

Thesis (Ph. D.)--Leland Stanford Junior University, 1910.

Thesis (Ph. D.)--Leland Stanford Junior University, 1910. / Work begun under auspices of the Washington Geological Survey.

Thesis (Chem. E)--New York University, (1917). / At head of title: State of Michigan. Department of Conservation. Geological Survey Division. In cooperation with the Department of Chemical Engineering, University of Michigan. Includes bibliographical references.

Inaug.-diss.--Leipzig. / Lebenslauf. "Literatur-verzeichnis": p. 73.

This Ph.D thesis describes an investigation into the operation of the Blue Circle Cauldon Works precalciner vessel. The vessel is part of the cement making plant and it serves the purpose of providing a furnace that is maintained at approximately 900C to calcine the limestone in the raw meal prior to cementation in the kiln. At Cauldon, tyre chips are used as a support fuel. It was the aim of this work to predict the likely behaviour of the gases and particles in the precalciner by using Computational Fluid Dynamics modelling. The commercial code Fluent was used. Investigation of the likely trajectories and combustion behaviour of tyre chips was particularly important. In this way it was hoped that a method of assessing the suitability of alternative waste fuels for incineration in the precalciner might be established. CFD models were constructed that simulated the precalciner with all main reactions and energy exchanges occurring. The first model predicted the behaviour of the precalciner burning coal and the full load of raw meal. Subsequent models assessed the sensitivity of the first model to changes in the boundary conditions. Further models were developed together with experimental work to assess the combustion and aerodynamic behaviour of the tyre chips. Alternative injection points for the tyre chips were investigated. This type of precalciner had not previously been modelled elsewhere. Similar models were found for the operation of the precalciner without tyre chips but the geometrical accuracy of the models was improved in this work due to improvements in commercial CFD code. No similar study of tyre chip combustion has been made elsewhere. CFD was used successfully to model a precalciner vessel with tyre chip and coal combustion and the full raw meal loading simulated. Adjustments can be made quickly to the model to assess minor geometrical alterations. Alternative fuel injection points can be quickly assessed using the model.

The South African Clay Brick Industry has experienced major change in the last 9 years. Industry driving forces such as globalization, low industry growth rates and government policy changes have affected the local industry as have the bank interest rates and the relative weakness of the SA currency. These industry-driving forces have resulted in a number of local producers undertaking exports of products. The research underlying this report had a threefold objective: a) To identify the key factors affecting the sustainable export of clay products by SA producers. b) To evaluate the key factors affecting the sustainable exports of products by SA producers. c) To utilize the information gathered to identify the critical success factors that support or discourage export development in the Clay brick Industry. The key factors were also used to develop a export success model and assist the aspiring exporter through the process. In order to research the key success factors, it was necessary to firstly analyze modern business strategy and evaluate the chosen strategy. Thereafter, an industry analysis was carried out and the present situation within the industry evaluated. Research was conducted by means of a questionnaire and selected interviews with the industry. The results from the research make it possible to reach conclusions regarding critical success factors and specific factors that will assist the industry in its export drive. The research also identified a host of government -sponsored export incentives that will support the industry in growing exports. Finally, a number of recommendations were made that will go a long way in addressing industry challenges. / Thesis (MBA)-University of Natal, Durban, 2003.

No description available.

Both Chinese and Islamic glazed ceramics played a significant role in the history of ancient ceramic production. Moreover, it was innovation in glazes that made the Chinese and Islamic ceramics constantly innovative in various categories with different manufacturing techniques. This study applies chemical and isotopic analyses to investigate the manufacturing techniques and provenances of different types of glazes from Northern China and the Middle East, and extends the use of Sr isotopic analysis to investigate raw materials and glaze recipes used to making lime/alkaline glazes in Northern China and the Middle East for the first time. By chemical compositions of the lead glazes, the glazing techniques used to produce Chinese Tang Sancai lead glazes and splashed lead glazes from the Middle East have been identified. The mixture of lead oxide plus quartz/quartz sand was used for making both Chinese Tang Sancai glazes and Islamic splashed lead glazes. Besides, for the Chinese lead glazes, the trace element and lead isotopic analyses of them have been effective in grouping glazes made in different production kiln sites, and hence associating the Tang Sancai wares excavated from archaeological sites of unknown origin with their production centres. Furthermore, by comparing the lead isotopic ratios of Islamic lead glazes and those of lead ore deposits, the possible sources of lead used for making lead glazes can be determined, although more than one source was suggested due to the overlap of Pb isotopic ratios of different lead ore sources in some cases. This study is the first time that Sr isotopic analysis has been applied to the lime/alkaline glazes from Northern China and the Middle East. It has revealed that Sr isotopic compositions of lime/alkaline glazes from Northern China and the Middle East have been very effective in providing information on the glaze recipes and characteristics of raw materials used for making them. Based on Sr isotopic compositions, the case study of Nothern Chinese lime glaze has identified that the Yaozhou celadon glaze was probably produced by local ‘Fuping glaze stone’ combined with botanic ash. Besides, the case study of the Middle East alkaline glaze has suggested that the Raqqa ware glaze was probably made by ‘Cenozoic sand’ containing a certain content of limestone grains and feldspar and that botanic ash was used as a flux.

Thesis (MBA)--Stellenbosch University, 1992. / ENGLISH ABSTRACT: Development in the world and particularly in South Africa has resulted in change. This presents new opportunities and challenges to today's managers and entrepreneurs. As a result of our local political reform process, together with the collapse of the Soviet Union and the general deterioration of communistic ideologies, south Africans are experiencing a growing acceptance back into the world and neighbouring African communities. south African businessmen are faced with opportunities in foreign countries, especially neighbouring African countries, with South Africa cited as the key to Africa. The problem South African managers face, is how to evaluate opportunities in a neighbouring African country and to ascertain the type of trading conditions in that country. After eighteen years of communistic rule and ten years of civil war Mozambique is amongst the poorest countries in the world. World aid programs have come to the country's assistance, introducing economic recovery programs as well as replacing the out-dated socialistic ideas with western style free market principles. Although the country is suffering the effects of an ongoing civil war, indications are that a peace settlement is imminent. The Mozambique government has .introduced an attractive foreign investment package which is aimed at attracting foreign capital. A first impression indicates that this country is ready for foreign investment and exploitation, but is it? This research proj ect firstly evaluates existing feasibility models in an attempt to find a suitable model to assess the feasibility of investing in a clay brickworks located in Mozambique. Failing to find such a feasibility model, a suitable model is then presented. The feasibility model presented takes a holistic approach, acknowledging that first world structures, such as a financial or transportational infrastructure, should not be assumed to exist. The model is divided into two parts, the first evaluating the macro parameters of the country and the second evaluating the micro parameters or specifics of the opportunity. The assessment of macro parameters is divided into five sections, namely, socio- cultural, political, economic, technological and physical parameters. After the completion of each section parameters are summarised and graded. At the end of the macro parameters, an interim evaluation is required to assess whether the country is favourable for investment. If the investor believes the country is ready for investment, the following section covering the micro parameters is investigated. If, however, the investor believes that the country is not suitable for investment then further analysis is suspended. The second section which covers the micro parameters is also divided into five sections, namely, financial, manufacturing, proposed infrastructure, marketing and personnel parameters. These parameters cover the project specifically and are similar to those of a normal business plan. Following this analysis, a final evaluation is done culminating in a decision on whether the project is feasible or not . In applying this model to evaluate the feasibility of establishing a clay brickworks in Mozambique, the researchers concluded at the interim evaluation that it was premature to invest in a clay brickworks in Mozambique . This type of investment might only become attractive after a peace settlement were reached between the government and the resistance movement and with the restoration of the country's infrastructure. / AFRIKAANSE OPSOMMING: Ontwikkeling wereldwyd, en veral in Suid-Afrika, het verandering meegebring. Dit stel nuwe geleenthede en uitdagings aan vandag se bestuurders en entrepreneurs. Na aanleiding van veranderinge in die politieke bestel in Suid-Afrika, die verbrokkeling van die Sowjet-Unie en die verlies van geloofwaardigheid van die kommunistiese ideologie, beleef Suid-Afrika toenemende aanvaarbaarheid in die wereld asook met sy naburige Afrika lande. Nuwe geleenthede buitelands en veral in die naburige Afrika lande, word nou aan besigheidslui in Suid-Afrika gebied, derhalwe word Suid- Afrika gesien as die sleutel tot Afrika. Die probleem wat Suid-Afrikaanse bestuurders tans in die gesig staar, is die evaluasie van lewensvatbare geleenthede in 'n naburige Afrika land en om die handelstoestande te bepaal waaronder hulle sal moet funksioneer. Na agtien jaar van kommunistiese heerskappy en tien jaar van burgeroorloe is Mosambiek een van die armste lande ter wereld. Buitelandse noodlenigingsprogramme het tot die land se redding gekom met die daarstel van ekonomiese herstel programme sowel as die vervanging van sosialistiese idees met 'n Westerse vryemarkstelsel. Alhoewel Mosambiek nog swaar gebuk gaan onder burgeroorloe, is daar wel aanduidings dat 'n vredesooreenkoms onafwendbaar is. Die Mosambiekse regering bied tans aantreklike beleggingspakkette aan wat hoofsaaklik gerig is op die buitelandse belegger. Die eerste indrukke wat gelaat word, is dat Mosambiek gereed is vir buitelandse belegging en ontginning. Die vraag is, is dit wel so? Hierdie navorsingsprojek evalueer eerstens bestaande uitvoerbaarheidsmodelle ten einde 'n toepaslike model te vind om die uitvoerbaarheid te bepaal van investering in 'n kleibaksteenfabriek in Mosambiek. Die uitvoerbaarheidsmodel wat hier voorgestel word, neem 'n holistiese benadering aan, met die erkenning dat elemente soos die finansiele- en vervoer-infrastruktuur nie noodwendig tans bestaan nie. Die model is verdeel in twee dele waarvan die eerste die makro- parameters van die land evalueer, en die tweede die mikra-parameters, of spesifieke besonderhede aangaande die geleentheid. Die evaluering van makro- parameters word opgedeel in vyf afdelings, naamlik, die sosio-kulturele, politiese, ekonomiese, tegnologiese en fisiese parameters. Na voltooiing van elke afdeling word 'n kort opsomming en gradering gedoen. Aan die einde van die deel wat handel oor makro-parameters, is daar 'n tussentydse evaluasie gedoen om te bepaal of die land gunstig is vir beleggings. As die belegger glo dat die land gereed is vir belegging, word die volgende afdeling, naamlik mikro-parameters, ondersoek. Indien die belegger egter van mening is dat die land nie geskik is vir beleggings nie, word die ontleding na die eerste gedeelte gestaak. Die tweede afdeling, wat na mikro-parameters verwys, word ook in vyf sub- afdelings opgedeel, naamlik, finansieel, vervaardiging, voorgestelde infrastruktuur, bemarking en personeel parameters. Hierdie parameters is soortgelyk aan 'n gewone besigheidsplan en is omvattend en spesifiek. Hierdie ontleding word gevolg deur 'n finale evaluasie wat uitloop op 'n besluit of die projek uitvoerbaar is of nie. Deur middel van die toepassing van hierdie model om die lewensvatbaarheid van die vestiging van 'n kleibaksteenfabriek in Mosambiek te evalueer, het die navorsers in die tussentydse ontleding getoon dat so 'n belegging nie op hierdie stadium lewensvatbaar sal wees nie. 'n Belegging sal moontlik aantreklik wees nadat daar ' n vredesooreenkoms bereik word tussen die regering en die weerstandsbeweging, en met die herstel van die land se infrastruktuur.