Search for dissertations about: "barriärer"

Showing result 21 - 25 of 67 swedish dissertations containing the word barriärer.

2. 21. Redox Reactions of Uranium-Based Materials in Aqueous Systems and Under UHV Conditions. : Two models mimicking radiation-induced oxidation of spent nuclear fuel

   Author : Ghada El Jamal; Mats Jonsson; Christophe Jégou; KTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Kemi; Chemistry;

   Abstract : The demand for clean electricity is a primary concern in Europe. Nuclear power isconsidered as a greenhouse gas-free technology for generation of electricity. However,compared to other energy sources, it generates a highly toxic waste.In Sweden, the long-term solution for the waste disposal issue is called the KBS-3 method. READ MORE

4. 22. Eco-immunological studies of innate immunity in Mallards (Anas platyrhynchos)

   Author : Anu S. Helin; Jonas Waldenström; Edwin Veldhuizen; Linnéuniversitetet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Avian β-defensins AvBDs ; Avian gene expression; Host-pathogen interactions; Innate immunity; Mallard Anas platyrhynchos ; Myxovirus resistance gene Mx ; Retinoic acid inducible gene 1 RIG-I ; Avian β-defensins AvBD ; Genuttryck; Gräsand Anas platyrhynchos ; Immunförsvar; Immungener; Myxovirus resistant gene Mx ; Patogen; Retinoic acid inducible gene 1 RIG-I ; Ecology; Ekologi;

   Abstract : This thesis comprises two sections, both of which explore eco-immunology of the innate immune system of mallards (Anas platyrhynchos). The innate immune system serves a pivotal role as the first line of defense against invading pathogens, and is comprised of physical and chemical barriers. READ MORE

5. 23. Climatic conditions inside nuclear reactor containments : Evaluation of moisture condition in the concrete within reactor containments and interaction with the ambient compartments

   Author : Mikael OXFALL; Avdelningen för Byggnadsmaterial; []
   Keywords : kärnkraft; betong; in situ mätningar; relativ fuktighet; kokvattenreaktorer; tryckvattenreaktorer; masstransport;

   Abstract : Safety is the top priority at a nuclear facility. The nuclear power plants are designed to prevent radioactive leakage to the surroundings, both during normal operation as well as in case of a severe accident. One of the most important structures in a nuclear power plant, with regard to safety, is thus the reactor containment wall. READ MORE

6. 24. Bio-based barriers from wood hydrolysates : A pilot-scale approach

   Author : Soheil Saadatmand; Ulrica Edlund; Youssef Habibi; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Wood hydrolysate; biorefinery; oxygen permeability; multilayer barriers; food packaging.; vedhydrolysat; syrgaspermeabilitet; barriärskikt; livsmedelsförpackning;

   Abstract : Wood hydrolysates (WHs) are liquids extracted from the hydrothermal treatment of wood. They exist as the byproduct of forestry industries such as the dissolving pulp and fiberboard industries. WHs are hemicellulose-based with a large share of lignin in the chemical composition. READ MORE

7. 25. Quantum Devices from the Assembly of Zero- and One-Dimensional Building Blocks

   Author : Claes Thelander; Fasta tillståndets fysik; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; quantum devices; classical mechanics; quantum mechanics; relativity; statistical physics; thermodynamics; Matematisk och allmän teoretisk fysik; klassisk mekanik; kvantmekanik; relativitet; gravitation; termodynamik; statistisk fysik; Mathematical and general theoretical physics; single-electron transistor; nanowires; AFM; carbon nanotubes; Fysicumarkivet A:2003:Thelander;

   Abstract : This thesis describes novel methods for the fabrication of nanometer-scale electronic devices, such as single-electron transistors and resonant tunneling diodes, from wire- and dot-shaped building blocks. The first part of the thesis describes the manipulation of metal nanoparticles and carbon nanotubes using an atomic force microscope. READ MORE