Sökning: "reduction potential"

Visar resultat 1 - 5 av 706 avhandlingar innehållade orden reduction potential.

  1. 1. Investigations of the Kinetics of Reduction and Reduction/Carburization of NiO-WO3 Precursors

    Detta är en avhandling från Stockholm : KTH

    Författare :Hesham M. Ahmed; KTH.; [2010]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TECHNOLOGY Chemical engineering Metallurgical process and manufacturing engineering Metallurgical process engineering; TEKNIKVETENSKAP Kemiteknik Metallurgisk process- och produktionsteknik Metallurgisk processteknik; Reduction; Reduction-Carburization; Gas-solid Reactions; Kinetics; Hydrogen; Methane; Thermogravimetric analysis; Fluidized bed; Simulation; Thermal diffusivity; Thermal conductivity; Laser flash; Process Metallurgy; Processmetallurgi;

    Sammanfattning : Kinetic studies of reduction of the mixtures of NiO and WO3 having different Ni/(Ni+W) molar ratios in flowing hydrogen gas were investigated by means of Thermo Gravimetric Analysis (TGA), Fluidized Bed (FB) technique as well as Thermal diffusivity measurements under isothermal conditions. In the case of TGA, the reaction progress was monitored by mass loss, while evolved gas analysis by a gas chromatograph was the indicator of the reaction progress in the case of FB. LÄS MER

  2. 2. Reduction of Aerodynamic Forcing inTransonic Turbomachinery Numerical Studies on Forcing Reduction Techniques

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Florian Fruth; KTH.; [2013]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Forced Response; Aerodynamic Forcing; Efficiency; Blade Count Ratio; Clocking;

    Sammanfattning : Due to more and more aggressive designs in turbomachinery, assuring the structural integrity of its components has become challenging. Also influenced by this trend is blade design, where lighter and slimmer blades, in combination with higher loading, lead to an increased risk of failure, e.g. in the form of blade vibration. LÄS MER

  3. 3. Some aspects on the reduction of olivine pellets in laboratory scale and in an experimental blast furnace

    Detta är en avhandling från Stockholm : Materialvetenskap

    Författare :Jerker Sterneland; KTH.; [2002]
    Nyckelord :Olivine; pellets; pellet testing; reduction softening melting; MPBO; blast furnace; reduction; quenching; dissection; coating; sticking; coated pellets;

    Sammanfattning : The reduction behaviour of the olivine iron ore pellet MPBOwas studied in laboratory scale at KTH as well as in the LKABexperimental blast furnace. Initially, a newreduction-under-load, or so-called reduction/softening/melting,test equipment was developed. LÄS MER

  4. 4. Fundamental Studies Related to Gaseous Reduction of Iron Oxide

    Detta är en avhandling från Stockholm : Kungliga Tekniska högskolan

    Författare :Mania Kazemi; KTH.; [2016]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Direct reduction; iron ore; cementite; reduction model;

    Sammanfattning : The demands for increasing the efficiency and lowering the environmental effects in iron and steelmaking industries have given rise to interests in application of direct reduction (DR) processes for production of iron by different gases. These advancements require comprehensive models for better control of the process conditions and the product properties. LÄS MER

  5. 5. Discovery of N-hydroxyguanidines as novel electron acceptors of xanthine oxidase : Potential new drugs for treatment of ischemia and reperfusion injury

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Maija Dambrova; Uppsala universitet.; [1999]
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Pharmaceutical biosciences; xanthine oxidase; N-hydroxyguanidine derivatives; ischemia and reperfusion; reduction; inhibition; superoxide; Farmaceutisk biovetenskap; PHARMACY Biopharmacy; FARMACI Biofarmaci; Pharmaceutics; galenisk farmaci;

    Sammanfattning : Xanthine oxidase (EC 1.1.3.22) is one of the major enzymatic sources of oxygen-derived free radicals. LÄS MER