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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
111

The influence of sulphur on the color of azo dyes ...

Palmer, George David, January 1926 (has links)
Thesis (Ph. D.)--Johns Hopkins University, 1924.
112

The influence of sulphur on the color of azo dyes ...

Waldron, William Robert, January 1922 (has links)
Thesis (Ph. D.)--Johns Hopkins University, 1922. / Biography.
113

A contribution to the solution of the "Pechmann dyes" problem: the chemistry of acyl paraquinones ...

Larson, Hardy William, January 1900 (has links)
Thesis (Ph. D.)--Columbia University, 1927. / Vita. Bibliography: p. [37-38].
114

Quinoidation in the triarylmethyls ...

Blicke, Frederick Franklin, January 1923 (has links)
Thesis (Ph. D.)--University of Michigan, 1921.
115

The fabric of time : textile dyeing at the Tswaing crater

Tenea, Tudor 02 December 2012 (has links)
Since the advent of the industrial revolution man has become increasingly detached from the idea of making and the processes associated with it. Today’s society is a consumer driven one dependant on machinery as a means to an end. This attitude has lead to industry becoming an exploitative entity that rapidly becomes obsolete due to the static nature of its program. A shift in mindset is required to create healthy environments that balance the acts of being and doing. At the Tswaing crater, the salt and soda reserves in the crater basin were mined and exploited until they were completely depleted. The factory ruins now stand alone as silent witnesses to the downfall of a doomed industry, consumed by nature and ravaged by time. Although the process has long vanished from memory, the scars of industry are still visible on the landscape, providing an opportunity for a new layer to be woven into the fabric of the site. To respect its history, a new, craft-orientated industrial intervention is incorporated within the existing ruins, which allows visitors to get acquainted with the process of making and allows workers to experience the ephemeral qualities of the site. The end goal is to encourage man to dwell within his surroundings blurring the line between being and doing. The intervention is a fabric dyeing workshop where sheets of fabric add a new layer of colour to the landscape. The fabric is sold to the public on site and training is also provided for the public to educate people about the craft of fabric dyeing. The new process works with the natural surroundings, not looking to exploit the resources as before, but instead looking to add value to people’s lives through learning and experience - and not simply creating an economically viable product. / Dissertation MArch(Prof)--University of Pretoria, 2012. / Architecture / MArch(Prof) / Unrestricted
116

An electron spin resonance study of some organic photoconductor dyes /

Cho, Boong Y. January 1962 (has links)
No description available.
117

Thermoelectric power of organic photoconducting dyes /

Petruzzella, Nicholas Leonard January 1964 (has links)
No description available.
118

Organometallics in the stabilization of dyed fibres : a thesis submitted in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Chemistry at the University of Canterbury /

Ayling, Neroli. January 1900 (has links)
Thesis (Ph. D.)--University of Canterbury, 2008. / Typescript (photocopy). "March 2008." Includes bibliographical references (leaves 217-225). Also available via the World Wide Web.
119

The development of techniques for the analysis of reactive dyes in textile dyeing wastewater

Hansa, Ayesha January 1999 (has links)
Submitted in partial fulfilment of the requirements for the Degree of Masters of Technology: Chemical Engineering, M.L. Sultan Technikon, 1999. / An environmental problem facing the textile industry is the coloured effluent from the dyeing of cellulosic fibres with reactive dyes. Reactive dye loss during dyeing operations is about 10 to 40 %, indicating the need to learn more about the fate of these dyes. Increasing environmental regulations are driving technical innovation to manage this problem. Good analytical techniques for the separation and detection of reactive dyes and their derivatives are necessary for monitoring dye-house effluent, as well as in the optimisation of dye synthesis, purification, formulation and application. / M
120

The impact of the wet dyeing process on the environmental sustainability : A case study of IKEA and their usage of water, energy and chemicals

Abrahamsson, Paulina, Johannesson, Maja January 2022 (has links)
Background: As a company it is more important than ever to consider the environmental sustainability aspect within the whole supply chain and all the stakeholders. Studies show that people's concerns about environmental sustainability increases and will continue to grow in the future. The wet dyeing process is the part of the textile production that consists of liquor and contains three main steps which are pretreatment, coloration and finishing. This process is presented as the most water, energy and chemicals consuming process within the textile industry and because of that, it is important to investigate it to be able to improve the environmental sustainability.  Purpose: The purpose of the thesis is to increase the understanding of IKEA’s suppliers' current usage of water, energy and chemicals within the wet dyeing process. Followed by an identification of opportunities for improvements in the wet dyeing process, aiming to become more environmentally sustainable.  Method: Through interviews with two suppliers, information regarding IKEA’s current wet dyeing processes will be collected. After that, data from relevant theoretical sources will be collected to analyze possible improvements of methods and colorants that can be relevant for IKEA as well as other companies within the textile industry to implement.  Conclusion: For research question 1, the researchers reach the conclusion that IKEA’s supplier number one has a more environmentally sustainable wet dyeing process compared to the second supplier.. A conclusion is nevertheless drawn that improvements within both suppliers wet dyeing processes should be considered to become more environmentally sustainable. For research question 2, the researchers come to the conclusion that Spray dyeing is the best alternative method to implement for improving environmental sustainability within the wet dyeing process. The researchers also recommend companies to actively become a part of the development of bacterial colorants, the future of coloration.

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