Search for dissertations about: "sulphides"

Showing result 6 - 10 of 75 swedish dissertations containing the word sulphides.

  2. 6. Synthesis and stereochemical studies on some cyclic sulphides and disulphides chemically related to biologically active natural products

    Author : Göran Claeson; Uppsala universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP;

    Abstract : .... READ MORE

  4. 7. Studies on some persistent environmental contaminants : synthesis of chlorinated [¹⁴C] biphenyls and of methyl sulphides and/or methyl sulphones derived from DDE, polychlorobiphenyls and hexachlorobenzene : studies on the in vivo transformation of certain chlorinated biphenyls and hexachlorobenzene to sulphurcontaining metabolites

    Author : Åke Bergman; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : .... READ MORE

  5. 8. Sulphide Minerals: Surface Oxidation and Selectivity in Complex Sulphide Ore Flotation

    Author : Alireza Javadi; Dee Bradshaw; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mineralteknik; Mineral Processing;

    Abstract : Metal and energy extractive industries play a strategic role in the economic development of Sweden. At the same time these industries present a major threat to the environment due to multidimensional environmental pollution produced in the course of ageing of ore processing tailings and waste rocks. READ MORE

  6. 9. The chemistry of flotation activation and depression of iron-containing sulphide minerals

    Author : Xianghuai Wang; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mineralteknik; Mineral Processing;

    Abstract : Thermodynamic calculations, electrochemical techniques, flotation and adsorption tests were used to study the physico-chemical principles involved in the flotation, activation and depression of the common ironcontaining sulphide minerals. Thermodynamic calculations on iron-xanthate-sulphur-water systems indicate that insoluble ferric hydroxo- xanthates can be obtained at a very low xanthate concentration in the neutral to weakly alkaline pH range, in which no liquid dixanthogen is formed. READ MORE

  7. 10. Molecular Structure and Packing of Platinum(II) Complexes with S-donor Ligands in the Solid State An X-ray Crystallographic Study

    Author : Christian Hansson; Centrum för analys och syntes; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; low temperature; high-pressure; structural class concept; hydrogen bonding; intermolecular interactions; crystallography; platinum coordination compounds; packing; phase transitions; Inorganic chemistry; Oorganisk kemi;

    Abstract : How do molecules arrange themselves in a crystal? It is today not possible to definite predict the three-dimensional packing arrangement of molecules in the crystalline solid state. The aim of the work presented in this thesis has been to gain more knowledge of what principles that govern molecular packing. READ MORE