Sökning: "Apparatus design"

Visar resultat 16 - 20 av 27 avhandlingar innehållade orden Apparatus design.

  1. 16. Core Loss Prediction in Hydroelectric Generators and Analysis of a Contra-Rotating Machine Topology

    Författare :Martin Ranlöf; Uppsala universitet; []
    Nyckelord :TECHNOLOGY; TEKNIKVETENSKAP;

    Sammanfattning : The call for increased accuracy in the process of design and analysis of electrical machines has encouraged the use of numerical methods to calculate the electric and magnetic field distributions within this type of apparatus. The finite element method is a numerical technique that has become specifically widespread and popular, due to the relative swiftness and accuracy with which it is possible to treat complex machine geometries and non-linear material characteristics. LÄS MER

  3. 17. Laboratory Investigations of Frost Action Mechanisms in Soils

    Författare :Deniz Dagli; Jan Laue; Tommy Edeskär; Lukas Arenson; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Cold Regions Soil Mechanics; Frost Action; Frost Depth; Frost Heave; Heat Flow in Soils; Ice Lens Formation; Image Analysis; Laboratory Freezing Test; Soil Mechanics; Geoteknik;

    Sammanfattning : Phase change of the water in the soil skeleton under cold climate conditions (also known as frost action in soils) affects soil properties and can be responsible for serious alterations in a soil body; causing damages (due to the volumetric expansion known as frost heave) to structures on or below the ground surface such as foundations, roads, railways, retaining walls and pipelines, etc. In order to improve the current design methods for roads against frost action, the Swedish Transport Administration (Trafikverket) has initiated a research program. LÄS MER

  4. 18. Chemical attenuation of bacterial virulence : small molecule inhibitors of type III secretion

    Författare :Anna Kauppi; Mikael Elofsson; Anders Karlén; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; antibiotic resistance; virulence; type III secretion; T3SS inhibitors; Yop; SMD; QSAR; screening; Yersinia pseudotuberculosis; Organic chemistry; Organisk kemi;

    Sammanfattning : Despite the large arsenal of antibiotics available on the market, treatment of bacterial infections becomes more challenging in view of the fact that microbes develop resistance against existing drugs. There is an obvious need for novel drugs acting on both old and new targets in bacteria. LÄS MER

  5. 19. Computer assisted evaluation of gas sensors : theory and applications

    Författare :Dennis Söderberg; Linköpings universitet; []
    Nyckelord :;

    Sammanfattning : The application of a low cost computer as program control in a laboratory experimental situation is valuable for the evaluation of a complex measurement problem. The first step in a computer assisted evaluation is to design the experimental methods and construct the apparatus. LÄS MER

  7. 20. Digitalized industrial equipment : an investigation of remote diagnostics services

    Författare :Katrin Jonsson; Jonny Holmström; Ola Henfridsson; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; boundary-spanning practices; e-maintenance; industry; information technology; IT-enabled services; remote diagnostics systems; ubiquitous computing; Informatics; computer and systems science; Informatik; data- och systemvetenskap;

    Sammanfattning : With the ubiquity of digitalization, digital convergence of applications, devices, networks and artifacts presents both challenges and opportunities for individuals, organizations and society. Physical artifacts that were not digital in the recent past are now increasingly becoming intertwined with digital components, providing them with digital capabilities. LÄS MER