Sökning: "supercritical carbon dioxide"

Visar resultat 21 - 25 av 29 avhandlingar innehållade orden supercritical carbon dioxide.

  1. 21. Development of techniques and methods for drug analysis by packed capillary liquid chromatography with octadecylbonded silica and porous graphitic carbon columns

    Författare :Pernilla Koivisto; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Chemistry; Kemi; Chemistry; Kemi; Analytical Chemistry; analytisk kemi;

    Sammanfattning : Packed capillary liquid chromatography in combination with ultraviolet and mass spectrometric (MS) detection was explored as an analytical tool for drug analysis. The focus was put on column and sample preparation techniques as well as on fundamental aspects and development of chromatographic separations. LÄS MER

  3. 22. Development and Evaluation of Methods in Source Apportionment of the Carbonaceous Aerosol

    Författare :Johan Martinsson; Kärnfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; carbonaceous aerosol; organic aerosol; aerosol particles; source apportionment; air pollution;

    Sammanfattning : Carbonaceous aerosols are known to affect human health negatively and to affect the climate of Earth. As specific types of aerosols originate from specific sources, it is important to know the amount of aerosols emitted from each source. Aerosol source apportionment is an important tool in mitigating air pollution and improving air quality. LÄS MER

  4. 23. Molecular-level Simulations of Cellulose Dissolution by Steam and SC-CO2 Explosion

    Författare :Faranak Bazooyar; Högskolan i Borås; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; molecular modelling; cellulose; steam explosion; SC-CO2 explosion; Resource Recovery; Resource Recovery; Resursåtervinning;

    Sammanfattning : Dissolution of cellulose is an important but complicated step in biofuel production from lignocellulosic materials. Steam and supercritical carbon dioxide (SC-CO2) explosion are two effective methods for dissolution of some lignocellulosic materials. Loading and explosion are the major processes of these methods. LÄS MER

  5. 24. Enthalpy and Entropy in Enzyme Catalysis : A Study of Lipase Enantioselectivity

    Författare :Jenny Ottosson; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Biocatalysis; enzyme catalysis; Candida antarctica lipase B; enantioselectivity; enthalpy; entropy; CALB; enantiomeric ratio; Bioengineering; Bioteknik;

    Sammanfattning : Biocatalysis has become a popular technique in organic synthesis due to high activity and selectivity of enzyme catalyzed reactions. Enantioselectivity is a particularly attractive enzyme property, which is utilized for the production of enantiopure substances. LÄS MER

  7. 25. Ink Jetting of Photochromic Ink : Towards the Design of a Smart Textile Sensor

    Författare :Sina Seipel; Högskolan i Borås; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Inkjet printing; UV curing; photochromic; UV-sensing; smart textile; resource-efficient; scCO2 dyeing; jetting; dye kinetics; color performance; durability; stabilization; Textil och mode generell ; Textiles and Fashion General ;

    Sammanfattning : Smart textiles have been a hot topic in research for several decades; however, comparatively few products can be found on the market. Resource-efficient processes can boost the breakthrough of smart and functional textiles, which often necessitate high-cost materials and only require small batches. LÄS MER