Global ETD Search
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Showing 1 to 20 of 103 for “"Diamonds"”.
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Surface textures and other features of diamonds
The results of the study of more than 11 000 diamonds, from thirty kimberlite and placer deposit localities, are reported. Forty-one pristine surface textures are distinguished, including twelve which are described for the first time. Only two surface textures are ascribed to crystal growth. The …
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Two enumeration problems about the Aztec diamonds
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mathematics, 1991.
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Testing of Burton's method to synthesize diamonds
A method was investigated to synthesize diamonds at atmospheric pressure without the use of diamond seed crystals. The method was first proposed by Burton in 1905 and appears to have been lost in the literature. The procedure is based on Ostwald's principle of the formation of metastable, …
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Diamonds as Development: Suffering for Opportunity in the Canadian North
Despite the repeated collapse of mining towns and sites in the Great Slave Lake region, most residents embrace new resource projects as possibilities for creating viable futures. Situated at the intersection of socio-cultural and linguistic anthropology, this ethnographic investigation of the …
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Diamonds: Cultural Representations and Transformations of a "Girl's Best Friend"
… in the 1950s created a diamond culture where diamonds are continuously associated with images of love and devotion. With all of the diamond's positive associations, no one could have imagined that such a precious jewel could have negative connotations. Yet in the 1990s, the label "blood …
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Diamonds and related minerals from the Dokolwayo Kimberlite, Kingdom of Swaziland
… mineralogy, and distribution of the Dokolwayo diamonds were investigated. A representative suite of concentrate garnet megacrysts and macrocrysts were analyzed for their compositions. Concentrate macrocryst spinels and silicate inclusions recovered from these spinels were analyzed. The physical …
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A geochemical study of diamonds from Cullinan diamond mine, South Africa
… geochemistry of a suite of one hundred selected diamonds and their associated mineral inclusions. The majority of the diamonds described here are peridotitic (94%) and the remainder are eclogitic. The peridotic inclusions may be further subdivided into harzburgitic and lherzolitic parageneses.
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Diamonds, a resource curse? : the case of Kono District in Sierra Leone
(Ph. D.)--Michigan State University. Dept. of Geography, 2010
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Imperial Splendor: Diamonds, Commodity Chains, and Consumer Culture in Nineteenth-Century Britain
This work is based on a wide range of British newspapers and jewelry trade periodicals, particularly Jeweller and Metalworker, archival work done in the Birmingham City Archives on the Birmingham Jewellers' and Silversmiths' Association, the papers of Joseph Chamberlain (University of Birmingham) …
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Imperial splendor: Diamonds, commodity chains, and consumer culture in nineteenth-century Britain
This dissertation examines the meaning of diamonds in imperial Britain in the nineteenth century and how Britain's involvement in diamond commodity chains across the century informed metropolitan consumers' conception of and desire for diamond jewelry. It argues that knowledge about the conditions …
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Worker's perception regarding the introduction of technology at Chiadzwa diamonds mines in Zimbabwe
The purpose of this study was to investigate the perceptions of workers regarding the introduction of technology at Chiadzwa Diamond Mines. The study was quantitative in nature and a descriptive research design was used. A selected sample size of 60 workers (30 skilled and 30 unskilled) was drawn …
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N and C isotropic composition of different varieties of terrestrial diamonds and carbonado
… has been performed on eclogitic and peridotitic diamonds (mainly from Yakutian kimberlites and the Roberts Victor kimberlite pipe). Diamonds with unusual (light and heavy relative to the peak of δ<sup>13</sup>C distribution of mantle diamonds) carbon isotopic signatures were considered for the …
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Diamonds in the rough. Searching for high potential in youth table tennis players
Contains fulltext : 160301.pdf (Publisher’s version ) (Open Access)
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Interaction of Carbon Nanotubes and Diamonds Under Hot-Filament Chemical Vapor Deposition Conditions
SEM and Raman analysis of the early stage nucleation are used to develop a hypothesis of diamond nucleation enhancement by CNT under HFCVD conditions. It is found that the nucleation takes places by etching of the CNT to create a new carbonaceous surface, onto which diamond nucleates. This …
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A study of unusual diamonds from the George Creek K1 Kimberlite dyke, Colorado
Cathodoluminescence photomicrographs of diamonds from the George Creek Kl (section 28) kimberlite dyke in Colorado reveal complex intergrowth relationships between CO?-free and CO?-bearing diamond growth generations. The distribution of the CO?-bearing diamond in some specimens suggests that this …
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Guiana Shield diamonds, the sub-cratonic lithosphere, and kimberlite emplacement in the upper crust.
The origin of diamonds from Guyana have remained an enigma despite being mined for nearly 150 years within the Guiana Shield. These gemstones are an undescribed diamond suite within an understudied portion of the Amazonian Craton. Our study confirms they are likely eroding as paleo-placers from …
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Atmospheric-pressure flame vapor deposition of nanocrystalline diamonds in methane/hydrogen/air flat flames
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2024-08-01
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The effect of chemical additives on cutting forces and rate of wear of natural diamonds
Call number: LD2668 .T4 1978 R37
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