Search for dissertations about: "Nylen"

Showing result 11 - 15 of 45 swedish dissertations containing the word Nylen.

  2. 11. Development of ring-opening catalysts for diesel quality improvement

    Author : Ulf Nylén; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; ring opening; naphthenes; cetane number improvement; indan; light cycle oil LCO ; Pt-Ir catalyst; catalyst characterization; aromatic sulphur compounds; GC-SCD; distribution; analysis;

    Abstract : The global oil refining industry with its present shift inproduct distribution towards fuels such as gasoline and dieselwill most likely hold the fort for many years to come. However,times will change and survival will very much depend onprocessing flexibility and being at the frontiers of refiningtechnology, a technology where catalysts play leading roles. READ MORE

  4. 12. Ring-opening catalysts for cetane improvement of diesel fuels

    Author : Ulf Nylén; Magali Boutonnet; Sven Järås; François Garin; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; ring opening selective ; naphthenic structure; indan; light cycle oil LCO ; cetane; Pt-Ir catalyst; microemulsion; XPS; TPR; TEM; DRIFTS; sulphur analysis; GC-SCD; Chemical engineering; Kemiteknik;

    Abstract : The global oil refining industry with its present product distribution essentially shifted towards fuels such as gasoline and diesel will most likely hold the fort for considerable time. However, conditions are changing and refinery survival will very much depend on long-term planning, process and product flexibility and being at the frontiers of refining technology, a technology where catalysts play leading roles. READ MORE

  5. 13. On striatum in silico

    Author : Johanna Frost Nylén; Karolinska Institutet; Karolinska Institutet; []
    Keywords : ;

    Abstract : The basal ganglia are a collection of subcortical nuclei involved in movement and action selection. The striatum is the main input nucleus with extensive projections from the cortex and thalamus, and dopaminergic projections from SNc and VTA. READ MORE

  6. 14. Compact Constraints for Verification of Well Quasi-Ordered Programs

    Author : Aletta Nylén; Parosh Abdulla; Kaisa Sere; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Computer science; Datavetenskap;

    Abstract : In this thesis we present algorithms and constraint systems for efficient verification of infinite-state transition systems that are monotonic with respect to a well quasi-ordering. A major problem in verification of infinite-state systems is constraint explosion, that is, the number of constraints generated during analysis is too large. READ MORE

  7. 15. Digital innovation and changing identities : investigating organizational implications of digitalization

    Author : Daniel Nylén; Jonny Holmström; Per Levén; Nicholas Berente; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Digital innovation; digitalization; platforms; media industry; organizational identity; computer and systems sciences; data- och systemvetenskap;

    Abstract : The emergence of digital technology represents a paradigmatic historical shift. As a process transforming sociotechnical structures, digitalization has had pervasive effects on organizing structures and business logics, as well as contemporary society as a whole. In recent years, these effects have been particularly salient in the content-based (e. READ MORE