Search for dissertations about: "ambient-air lifetime"
Showing result 6 - 7 of 7 swedish dissertations containing the words ambient-air lifetime.
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6. On integrity assessment of IGBT-based power stacks used in magnet power supplies for particle accelerators
Abstract : This thesis analyses an electrical testing method for assessing the integrity of an IGBT-based power stack assembly during factory acceptance tests and service stops. The method combines vce measurements with high current in the Zero Temperature Coefficient (ZTC) operating region and with low sensing current within a specific current cycle using a proposed sampling and filtering technique. READ MORE
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7. Cloud Droplet Forming Potential of Ageing Soot and Surfactant Particles : Laboratory research and Köhler modelling
Abstract : Aerosol particles affect Earth’s climate system by scattering and absorbing light. The perturbation of the climate system caused by a change in aerosol configuration due to anthropogenic emissions has recently improved. READ MORE