Sökning: "synthetic forms"

Visar resultat 6 - 10 av 74 avhandlingar innehållade orden synthetic forms.

  1. 6. Generation of synthesis gas for fuels and chemicals production

    Författare :Per Tunå; Avdelningen för kemiteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Synthetic fuels and chemicals; gasification; gas conditioning; simulation; tar-cracking;

    Sammanfattning : Many scientists believe that the oil production will peak in the near future, if the peak has not already occurred. Peak oil theories and uncertain future oil deliveries have stimulated interest in alternative sources of fuel and chemicals. LÄS MER

  3. 7. TOWARDS VALIDATED CATALYTIC REACTOR MODELS

    Författare :Magnus Walander; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; EATS; scanning electron microscope; Exhaust aftertreatment modelling; gravimetric analysis; effective diffusivity; synthetic catalyst activity test; washcoat; diesel oxidation catalyst;

    Sammanfattning : The use of liquid fuels in the internal combustion engine inherently produces several toxic emissions that need to be removed. This is done through a series of catalytic converters, referred to as the exhaust aftertreatment system (EATS), each catalyst with its own purpose. LÄS MER

  4. 8. Multi-functional Chromophores

    Författare :Fredrik Johansson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : As the push towards green energy become stronger, more efficient systems needs to be developed to compete with fossil fuel based systems. In modern Grätzel solar cells, most of the energy losses are inherited from the choice of chromophore and metal oxide surface. LÄS MER

  5. 9. Galanin in the pituitary and in human circulation : clinical and experimental studies

    Författare :Eva Grenbäck; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : The neuropeptide galanin has important roles in the central and peripheral nervous systems where it affects memory, seizure activity, appetite and pain transmission. Galanin is also present in the endocrine system and one of its most prominent effects is to stimulate the release of growth hormone (GH). LÄS MER

  7. 10. Lubricants influence on wear in sharp rail curves

    Författare :Patric Waara; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Machine Elements; Maskinelement;

    Sammanfattning : Rail lubrication in curves was widely introduced in Sweden during the 1970’s due to the high wear rate of gauge faces in sharp curves. The first tests performed in Sweden showed that lubrication decreased wear rates by roughly 10 times. Based upon these results, the Swedish track system was equipped with wayside lubricators called Clicomatic. LÄS MER