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Hittade 4 avhandlingar som matchar ovanstående sökkriterier.

  1. 1. Investigation of Solid Fuel Conversion in a Fluidised Bed Gasifier – Modelling and Experiments

    Författare :Louise Lundberg; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; modelling; biomass; char reactivity; gasification; char conversion; fluidised bed;

    Sammanfattning : A substantial proportion of Sweden’s greenhouse gas emissions originates from the transportation sector, and the Swedish government has set the goal that the entire Swedish vehicle fleet will be independent from fossil fuels by 2030. One of the strategies investigated to achieve this goal is biomass gasification, which is a technology that can be used to transform lignocellulosic materials into a raw gas. LÄS MER

  3. 2. Solid Fuel Conversion in Dual Fluidized Bed Gasification - Modelling and Experiments

    Författare :Louise Lundberg; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; dual fluidized bed gasification; fuel mixing; biomass; semi-empirical modelling; char gasification rate; fuel conversion; active bed material; char reactivity;

    Sammanfattning : Dual fluidized bed gasification (DFBG) is the initial step towards the transformation of ligno-cellulosic materials into a raw gas, which can be further upgraded into transportation fuels, such as substitute natural gas, Fischer-Tropsch diesel, dimethyl ether, and methanol. DFBG units can be operated in two distinctly different ways, depending on whether the main product is a gas (to be refined into a transportation fuel) or heat and power (with gas as a by-product). LÄS MER

  4. 3. Studies of the human pancreas to understand the pathologic events leading to type 1 diabetes

    Författare :Louise Granlund; Skog Oskar; Olle Korsgren; Marcus Lundberg; Per Andrén; Teresa Rodriguez-Calvo; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Pancreas; Type 1 Diabetes; Islets of Langerhans; Exocrine tissue; Acinar cells; Islet Microvasculature; Endocrine cells; Extra-islet cells; Insulin; Glucagon; Medicinsk vetenskap; Medical Science;

    Sammanfattning : Type 1 diabetes (T1D) is classically described as a disease emanating from beta-cell loss, and as such, the beta cells have been the main target of investigation. However, recent years have witnessed a shift in perspective, with T1D being increasingly recognized as a condition that affects the entire pancreas. LÄS MER

  5. 4. Distressing Symptoms in Children with Cancer in General; During Needle Procedures in Particular

    Författare :Lena Hedén; Gustaf Ljungman; Louise von Essen; Dag Lundberg; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Childhood cancer; pain; RCT; symptoms; Pediatrik; Pediatrics;

    Sammanfattning : The main aims of this thesis were to investigate the effect of distraction, midazolam and morphine on fear, distress, and pain during needle procedures, and to longitudinally describe parents’ perceptions of their children’s symptom burden during and after cancer treatment.The design in Study I-III was that of a randomized controlled trial (RCT) conducted in a medical setting; Studies II-III were placebo controlled. LÄS MER