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Showing result 1 - 5 of 22 swedish dissertations matching the above criteria.

  2. 1. Dependability and maintenance analysis of railway signalling systems

    Author : Amparo Morant; Peter Söderholm; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Drift och underhållsteknik; Operation and Maintenance Engineering;

    Abstract : Railway signalling systems are composed of several different systems; each has its own purpose, but the main functionality of the overall system is determined by the interoperability between them. Railway signalling systems ensure the safe operation of the railway network, and their reliability and maintainability directly affect the capacity and availability of the railway network, in terms of both infrastructure and trains. READ MORE

  4. 2. Megalin, an Endocytotic Receptor with Signalling Potential

    Author : Mårten Larsson; Lars Rask; Bo Åkerström; Uppsala universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Biochemistry; Megalin; LRP-2; Postsynaptic density-95; Retinol-binding protein; Oligodendrocytes; Central nervous system; Biokemi; Biochemistry; Biokemi;

    Abstract : Megalin is an endocytotic receptor belonging to the low-density lipoprotein family. It has often been viewed only as merely a scavenger receptor of absorptive and secretory epithelia. Recent work has revealed that the megalin intracellular domain contains several motifs potentially binding proteins involved in signal transduction. READ MORE

  5. 3. Maintenance decision support models for railway infrastructure using RAMS & LCC analyses

    Author : Ambika Prasad Patra; Ajit Kumar Verma; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Drift och underhållsteknik; Operation and Maintenance;

    Abstract : Today's railway sector is imposing high demands for service quality on railway infrastructure managers. Since railway infrastructure has a long asset life, it requires efficient maintenance planning to perform effectively throughout its life cycle to meet these high demands. READ MORE

  6. 4. Dependability and safety evaluation of railway signalling systems based on field data

    Author : Amparo Morant; Patrik Hilber; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Drift och underhållsteknik; Operation and Maintenance Engineering;

    Abstract : Railway signalling systems can be considered a group of complex systems that together provide control, supervision and protection of railway operation. When a failure occurs in the railway signalling system, other safety mitigation measures are put into place to continue railway operation, e.g. READ MORE

  7. 5. Roles of Notch signalling in early embryonic development

    Author : Heather Main; Karolinska Institutet; Karolinska Institutet; []
    Keywords : ;

    Abstract : Metazoan embryonic development requires a complex interplay of morphological processes coordinated with self-renewal and differentiation to correctly specify and maintain body cell types in the correct location. Notch signalling is a metazoan specific arbiter of cell fate decision processes, known to control lateral inhibition and asymmetric cell division processes throughout the metazoa and in the development of all metazoan organs. READ MORE