Sökning: "cotton exchange"

Hittade 4 avhandlingar innehållade orden cotton exchange.

  1. 1. The exchange of cotton : Ugandan peasants, colonial market regulations and the organisation of international cotton trade, 1904-1918

    Författare :Torbjörn Engdahl; Uppsala universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Economic history; cotton; market; organisation; buying-practices; transaction costs; colonial; regulation; policy implementation; Uganda; marketing channel; peasant; chief; middlemen; free-standing company; cotton exchange; international trade; Ekonomisk historia; Economic history; Ekonomisk historia; Ekonomisk historia; Economic History;

    Sammanfattning : Between 1904 and 1918, the British colonial administration in Uganda regulated the cotton industry in order to maintain and improve the quality of the exported cotton. The main topics of the dissertation are: Why were these regulations enacted and who initiated them? The dissertation analyses the impact of the organisation of the international cotton trade on the buying practices in the local Uganda cotton market. LÄS MER

  3. 2. Cellulose-water interaction: a spectroscopic study

    Författare :Erik L Lindh; István Furó; Lennart Salmén; Lisbeth G Thygesen; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; cellulose; water; hydrogen exchange; deuterium; NMR spectroscopy; FT-IR spectroscopy; Kemi; Chemistry;

    Sammanfattning : The human society of today has a significantly negative impact on the environment and needs to change its way of living towards a more sustainable path if to continue to live on a healthy planet. One path is believed to be an increased usage of naturally degradable and renewable raw materials and, therefore, attention has been focused on the highly abundant biopolymer cellulose. LÄS MER

  4. 3. Chemical Functionalization and Characterization of Cellulosic Materials

    Författare :Hanna de la Motte; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Nuclear magnetic resonance; Crosslinking; High bulk networks; Cotton linters; Cationization; Nanocrystalline cellulose; Softwood kraft pulp; Characterization;

    Sammanfattning : Polysaccharides are the most abundant biopolymers produced in nature and belong, together with proteins and nucleic acids, to the main components of life. Polysaccharides are polyhydroxylic polymers that can be functionalized by a wide selection of chemical reactions, and modifications of these biopolymers are applicable in the development of new materials. LÄS MER

  5. 4. Structural Elements in Native Celluloses

    Författare :Kristina Wickholm; KTH; []
    Nyckelord :cellulose I; accessible fibril surfaces; inaccessible fibril surfaces; para-crystalline cellulose; fibril aggregates; CP MAS 13C-NMR spectroscopy; spectral fitting; PCA; PLS;

    Sammanfattning : In this thesis, a schematic model for the structure ofaggregated cellulose I fibrils is proposed. The model consistsof a crystalline fibril core surrounded by less orderedcellulose forms. These cellulose forms are fibril surfacesaccessible to water, fibril surfaces inaccessible to water andpara-crystalline cellulose. LÄS MER