Sökning: "long-term oxygen"

Visar resultat 1 - 5 av 153 avhandlingar innehållade orden long-term oxygen.

  1. 1. Assessment of the Long-Term Transport Processes and Chemical Evolution in Waste Deposits

    Detta är en avhandling från Stockholm : Kemiteknik

    Författare :Sami Bozkurt; KTH.; [2000]
    Nyckelord :Solid waste; landfill processes; transport processes; long-term; heavy metals; contaminant release; oxygen; modelling; conceptual model; pH buffering; redox buffering; final top cover; natural analogue;

    Sammanfattning : .... LÄS MER

  2. 2. From novice towards self-care expert  studies of self-care among persons using advanced medical technology at home 

    Detta är en avhandling från Linköping : Department of Medical and Health Sciences, Linköping University

    Författare :Angelika Fex; Högskolan Väst.; Linköpings universitet.; Linköpings universitet.; [2010]
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; INTERDISCIPLINARY RESEARCH AREAS Caring sciences Nursing; TVÄRVETENSKAPLIGA FORSKNINGSOMRÅDEN Vårdvetenskap Omvårdnad; Nursing science; Vårdvetenskap; Home care services; Self care; Technology; medical; Dependent-care; Health; Hermeneutics; Home dialysis; Home ventilator; Long-term oxygen; Next of kin; Phenomenology; Transition; Egenvård; Medicinsk teknik; MEDICINE; MEDICIN; health; hermeneutics; home dialysis; home ventilator; long-term oxygen; next of kin; phenomenology; transition;

    Sammanfattning : The use of advanced medical technology at home has increased in most industrialized countries. The overall aim of this thesis was to develop knowledge of self-care and transition and issues that influence daily life and health among persons using advanced medical technology at home. LÄS MER

  3. 3. Predicting the Long-Term Insulation Performance of District Heating Pipes

    Detta är en avhandling från Linköping : Department of Medical and Health Sciences, Linköping University

    Författare :Camilla Persson; [2015]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; heat conduction; polyurethane foam; insulation capacity; diffusion; thermal conductivity; cyclopentane; solubility coefficient; long-term performance;

    Sammanfattning : The aim of the studies that comprise this thesis was to predict the heat loss over timefrom a range of district heating pipes insulated with closed-cells foam. The thermalconductivity of the foam changes over time when it is not diffusion-tight encapsulatedagainst the environment, as diffusion alters the cell gas composition until it reachesequilibrium with the surrounding air. LÄS MER

  4. 4. Long-term properties of polyethylene films efficiency of a natural antioxidant

    Detta är en avhandling från Stockholm : KTH

    Författare :Clara Strandberg; KTH.; [2006]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Polymer Technology; alfa-tocopherol; Polyethylene PE ; Thermal aging; Infrared Spectroscopy FT-IR ; Chemiluminescence CL ; Solid-phase microextraction SPME ; NATURAL SCIENCES Chemistry; NATURVETENSKAP Kemi;

    Sammanfattning : There is a growing awareness of the risks of pollution in biological systems and one potential problem is the synthetic antioxidants, used for e.g. the stabilisation of polymeric materials. Natural antioxidants are an interesting alternative, if the high efficiency and thermal stability of the synthetic compounds can be reached. LÄS MER

  5. 5. Degradation mechanisms and long-term performance of PUR insulation in district heating pipes

    Detta är en avhandling från ; Chalmers tekniska högskola; Gothenburg

    Författare :Alberto Vega; [2018]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; mechanical performance; thermal conductivity; District heating pipe; degradation mechanisms; long-term performance; rigid polyurethane foam;

    Sammanfattning : District heating networks are used worldwide, especially in Scandinavian countries and also in many other countries, e.g. Germany, Russia, United States, South Korea and China. From an environmental point of view, district heating networks are a good alternative to more traditional building heating systems. LÄS MER