Search for dissertations about: "SRA - E-vetenskap SeRC"

Showing result 1 - 5 of 11 swedish dissertations containing the words SRA - E-vetenskap SeRC.

  1. 1. Atomistic Modelling of Materials for Clean Energy Applications hydrogen generation, hydrogen storage, and Li-ion battery

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Zhao Qian; Rajeev Ahuja; Börje Johansson; Antonio Ferreira da Silva; [2013]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Renewable energy; Materials science; Hydrogen production; Hydrogen storage; Li-ion battery; Density functional theory; SRA - Energy; SRA - Energi; SRA - E-Science SeRC ; SRA - E-vetenskap SeRC ;

    Abstract : In this thesis, a number of clean-energy materials for hydrogen generation, hydrogen storage, and Li-ion battery energy storage applications have been investigated through state-of-the-art density functional theory.As an alternative fuel, hydrogen has been regarded as one of the promising clean energies with the advantage of abundance (generated through water splitting) and pollution-free emission if used in fuel cell systems. READ MORE

  2. 2. Thermodynamic and Kinetic Investigation of the Fe-Cr-Ni System Driven by Engineering Applications

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Wei Xiong; Malin Selleby; John Ågren; Byeong-Joo Lee; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; phase transformation; magnetism; spinodal decomposition; stainless steel; low temperature CALPHAD; phase field; ab initio; atom probe tomography; calorimetry; SRA - E-Science SeRC ; SRA - E-vetenskap SeRC ; SRA - Energy; SRA - Energi;

    Abstract : This work is a thermodynamic and kinetic study of the Fe-Cr-Ni system as the core of stainless steels. The Fe-Cr, Fe-Ni and Cr-Ni systems were studied intensively using both computational and experimental techniques, including CALPHAD (CALculation of PHAse Diagrams), phase field simulation, ab initio modeling, calorimetry, and atom probe tomography. READ MORE

  3. 3. Agro-Waste Derived Additives for Polylactide and Tapioca Starch

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Edwin Azwar; Minna Hakkarainen; Anna Wistrand; Christian Glandfils; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Agro-industrial waste; wood flour; rice bran; polylactide; starch; biomass; degradation; SRA - E-Science SeRC ; SRA - E-vetenskap SeRC ;

    Abstract : Development of materials from renewable resources is one of the big challenges facing our world. In this thesis agro-industrial waste derivatives were developed and evaluated as additives for two common renewable polymer matrices, polylactide (PLA) and starch. Two waste products, wood flour (WF) and rice bran (RB) were evaluated in different forms. READ MORE

  4. 4. Microstructural Evolution In As-cast Alloys during Plastic Deformation

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Mitra Basirat; Pär Jönsson; Hasse Fredriksson; Jacques Lacaze; [2013]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; plastic deformation; compression test; recrystallization; deformation band; As-cast; microsegregation; carbide dissolution; disordered structure; order disorder transformation; twining; steel; β brass; copper; SRA - E-Science SeRC ; SRA - E-vetenskap SeRC ;

    Abstract : The effect of deformation on microstructural changes in metals and alloys is the subject of considerable practical interest. The ultimate goal is to control, improve and optimize the microstructure and texture of the finished products produced by metal forming operations. READ MORE

  5. 5. Active Control and Reduced-Order Modeling of Transition in Shear Flows

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Reza Dadfar; Dan S. Henningson; Ardeshir Hanifi; Shervin Bagheri; Vassilis Theofilis; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; SRA - E-Science SeRC ; SRA - E-vetenskap SeRC ;

    Abstract : In this thesis direct numerical simulation is used to investigate the possibilityto delay the transition from laminar to turbulent in boundary layer flows.Furthermore, modal analysis is used to reveal the coherent structures in highdimensional dynamical systems arising in the flow problems. READ MORE