Search for dissertations about: "clean"

Showing result 11 - 15 of 537 swedish dissertations containing the word clean.

  2. 11. Electronic structure of clean and adsorbate-covered InAs surfaces

    Author : Karolina Szamota-Leandersson; Ulf Otto Karlsson; Vladimir Chab; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; angle-resolved photoemission; electronic structure; accumulation layer; adatoms; reconstruction; Surfaces and interfaces; Ytor och mellanytor;

    Abstract : This thesis is the result of investigations regarding the processes in InAs III-V semiconductor surfaces induced by additional charge incorporated by adsorbates. The aim of the project is to study the development of the accumulation layer on the metal/InAs(111)A/B surfaces and its electronic structure. READ MORE

  4. 12. Microbiological risk assessment of airborne contaminants in clean zones

    Author : Berit Reinmüller; KTH; []
    Keywords : ;

    Abstract : .... READ MORE

  5. 13. Computational Insights on Functional Materials for Clean Energy Storage : Modeling, Structure and Thermodynamics

    Author : Tanveer Hussain; Rajeev Ahuja; Caetano R. Miranda; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Density functional theory; Molecular dynamics; Hydrogen storage; Chemisorption; Physisorption; Functionalization; Physics with spec. in Atomic; Molecular and Condensed Matter Physics; Fysik med inriktning mot atom- molekyl- och kondenserande materiens fysik;

    Abstract : The exponential increase in the demands of world’s energy and the devastating effects of current fossil fuels based sources has forced us to reduce our dependence on the current sources as well as finding cleaner, cheaper and renewable alternates. Being abundant, efficient and renewable, hydrogen can be opted as the best possible replacement of the diminishing and harmful fossil fuels. READ MORE

  6. 14. The neutron-induced fission cross section of 233Pa : and the quest for clean and safe nuclear energy

    Author : Fredrik Tovesson; Andreas Oberstedt; Dietrich Hilscher; Örebro universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Fysik; fission; cross section; Pa-233; U-233; fysik; Physics; Fysik; Fysik; Physics;

    Abstract : Neutron-induced fission of 233Pa has been investigated between 1.0 and 8.5 MeV, and the reaction cross section was determined. Due to the short half-life of 233Pa for β-decay, fission events from the daughter product 233U affect the analysis of the protactinium experiment. READ MORE

  7. 15. Novel Metal Oxide Bed Materials for Efficient Solid Fuel Gasification and Gas Clean-up in Fluidized Beds

    Author : Martin Keller; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Hot Gas Clean-up; Gasification; Dual Fluidized Bed; Chemical Looping Reforming; Chemical Looping Combustion; Tar reforming;

    Abstract : In this work the utilization of some novel metal oxide bed materials in dual-fluidized bed gasification systems has been investigated. For this purpose, metal oxide based bed materials can be 1) directly utilized in the dual fluidized bed gasifier (DFB) or in the Chemical Looping Combustion (CLC) process in order to achieve higher gasification rates, or 2) employed in downstream hot gas conditioning processes, e. READ MORE