List of Titles

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The photo-fluorescence properties of some organic materials

- Cameron, Antony John Wesley

Authors: Cameron, Antony John Wesley
Date: 1959
Subjects: Hydrocarbons -- Spectra -- Fluorescence , Organic compounds , Energy transfer
Language: English
Type: Thesis , Doctoral , PhD
Identifier: vital:5514 , http://hdl.handle.net/10962/d1010041 , Hydrocarbons -- Spectra -- Fluorescence , Organic compounds , Energy transfer
Description: In this thesis I have given an account of the experimental work carried out by me at Rhodes University from the beginning of 1954 to the end of 1955, and the analysis of the results which was completed during the following two years, 1956 and 1957. The dissertation is divided into two sections; Part I deals with the photo fluorescence spectra of a large group of organic compounds, and Part 2 describes an investigation of the photo-fluorescence properties of and energy transfer in liquid organic solutions.
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Date Issued: 1959

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The solubility of mercurous chloride in water at 25°C

- Clur, Dennis Alwin

Authors: Clur, Dennis Alwin
Date: 1959
Subjects: Mercury compounds -- Solubility , Mercuric chloride
Language: English
Type: Thesis , Masters , MSc
Identifier: vital:4522 , http://hdl.handle.net/10962/d1014705
Description: [From Introduction]. In 1955, Dry and Gledhill, both formerly of this Department, published their paper on the Solubility of Mercurous Chloride in Water at 25°0, and it was originally intended that this thesis should be an extension of the study to cover the temperature range from 5 t o 55°0. A preliminary investigation at 25°0, however, failed to yield results which were consistent with their findings, even though their apparatus and experimental technique were used. In an effort to resolve these difficulties their method of saturating the calomel in the conductance cell was thoroughly investigated, and as this procedure was found to be responsible, it was necessary to evolve an entirely new approach. The technique finally adopted was to saturate the mercurous chloride solutions by mechanical stirring in siliconed vessels and to carry out the conductance, pH, and total mercury concentration measurements on the filter ed solution. This method gave good results, and was free from the many extrapolations prevalent in the original procedure.
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Date Issued: 1959

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The sorption of Hydrochloric Acid and Potassium Hydroxide by mohair and wool

- Bamford, Graeme Reginald Ernest

Authors: Bamford, Graeme Reginald Ernest
Date: 1959
Subjects: Hydrochloric acid -- Absorption and adsorption , Hydroxides -- Absorption and adsorption , Wool , Mohair
Language: English
Type: Thesis , Masters , MSc
Identifier: vital:4452 , http://hdl.handle.net/10962/d1009503
Description: The main object of the present investigation has been to establish a titration curve for mohair keratin and to compare it with similar data for wool, to determine whether the differences in physical and chemical properties could be attributed in any way to the acidic and basic character of these fibres. As shown in subsequent discussion such measurements provide extremely useful information regarding the chemical structure of proteins in general, and in the technical fields involving processes such as wool scouring, carbonizing and dyeing. The study has been extended to include certain modified wools, i.e. photochemically damaged, and oxidized keratin. The most successful contribution to the titration data of wool keratin is the work of Steinhardt and Harris and subsequent authors have tended to adopt their procedures without modification. In the present study attempts have been made to obtain a clearer understanding of the fundamental processes. New techniques and analytical methods have been introduced to improve the accuracy of the measurements.
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Date Issued: 1959

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The thermal decomposition of irradiated silver permanganate

- Sole, Michael John

Authors: Sole, Michael John
Date: 1959
Subjects: Decomposition (Chemistry) , Irradiation , Permanganates , Silver compounds , Metals -- Thermal properties
Language: English
Type: Thesis , Masters , MSc
Identifier: vital:4502 , http://hdl.handle.net/10962/d1013265
Description: The thermal decomposition of silver permanganate, pre-irradiated in BEPO and in a ⁶°C₀ Ϫ 'hot spot' has been investigated in the temperature range 100 - 125°C. The results are similar to those for irradiated KMn0₄ and the mechanism proposed for the latter is again suggested. The activation energy for the migration of point defects over the induction period is 1.03 ev. The decompositions of unirradiated and irradiated crystals differ in that the latter undergo physical disintegration over the acceleratory period. X-ray studies immediately prior to disintegration show strain and fragmentation in the irradiated crystal. An explanation involving the annealing of point defects at dislocation is advanced to explain the changes produced in the p/t plots with increased dosage, and fixed decomposition temperature. Summary, p. 94.
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Date Issued: 1959

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The transport system of the Border : a study of transport and communications in the Border region of the Cape Province with special reference to the effect of transport on the economic and commercial development of the region

- Smith, Hugh Hamilton

Authors: Smith, Hugh Hamilton
Date: 1959
Subjects: Transportation -- South Africa -- Eastern Cape , Harbors -- South Africa -- East London , Railroads -- South Africa -- Eastern Cape , Transportation, Automotive -- South Africa -- Eastern Cape , Communication and traffic -- South Africa -- Eastern Cape
Language: English
Type: Thesis , Doctoral , PhD
Identifier: vital:1122 , http://hdl.handle.net/10962/d1018721
Description: Transport undoubtedly occupies a most important place in the economic and commercial life of all countries. In this respect South Africa is no exception, and very briefly, the principal economic functions of transport are enumerated below. 1. Transport establishes communication between consumers and the producers of goods or services. 2. Transport facilitates the movement of persons between the place where they live and the place where they work - usually this is a daily procedure, but in South Africa it also entails the movement of large numbers of Natives from the Native Reserves to work for some months at a time either in the gold mines or in the several urban areas of the Union. 3. Transport makes geographical specialization possible, for agricultural or mineral resources will only be exploited, or specialized industries established, in a particular area, if the commodities produced can be transported to other parts of a country, or the world; and other capital and consumer goods brought to the producers living in the area of specialized production. 4. Transport faciitates industrial production because, of raw materials which come from many sources. Furthermore, transport enables the finished products of industry to be distributed to the markets in which they are sold. In all these cases, the efficiency of transport has to be measured not only in terms of its cost, but also in terms of its efficiency, which includes, inter alia, the time taken, the frequency of services, the safety of goods and passengers while in transit and the provision of various special services, such as the provision by railway undertakings of private siding facilities. This thesis will be divided into five parts, the first dealing with the technical and commercial development of the Buffalo Harbour. It has been decided to deal with the Harbour first because, not only has it been the focal point of the transport system of the Border Region since the latter part of the nineteenth century, but it has dominated the economic and commercial development of East London, as well as that of the Border Region as a whole. The second part deals with the evolution of the railway system from the 166 mile long East London and Queenstown Railway, to the present 1,110 miles of the Cape Eastern System. This historical chapter is followed by an analysis of the traffic of the Cape Eastern System. Part Three deals with the theory, practice, and economic consequences, of railway rating policy. Part Four is a detailed analysis of the goods traffic forwarded from, and received at East London in the period from 1st April, 1953 to 31st March, 1956. Part Five deals with roads and road transport. Finally, certain conclusions are offered, based on the significant points revealed by the investigation on which this thesis is based. In this thesis the theory of transport will not be dealt with in detail for it is essentially a factual account of the development of the transport system of the Border Region and an analysis of the present situation. It has unfortunately not been possible to make in this thesis a study of railway finance or railway economics with regard to the Cape Eastern System, for the data upon which to base such an investigation are not available for the Cape Eastern System in isolation. No attempt will be made to assess either the technical or the operating efficiency of the railway system for not only would this require more data than are available, but also a technical knowledge not possessed by the writer.
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Date Issued: 1959

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Visitor at the dance of the abakhwetha (2): Bokleni, 1959

- Ingle, Pauline Cornwell, 1915-1999

Authors: Ingle, Pauline Cornwell, 1915-1999
Date: 1959
Subjects: Inititiation rites -- South Africa , Xhosa (African people) -- Social life and customs , Circumcision -- South Africa , Medicine, Rural -- South Africa -- Transkei , Photography -- South Africa
Language: English
Identifier: vital:11988 , http://hdl.handle.net/10353/d1000765 , Inititiation rites -- South Africa , Xhosa (African people) -- Social life and customs , Circumcision -- South Africa , Medicine, Rural -- South Africa -- Transkei , Photography -- South Africa
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Date Issued: 1959

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