Sökning: "Matrix diffusion"
Visar resultat 16 - 20 av 153 avhandlingar innehållade orden Matrix diffusion.
16. Ageing behavior of plastics used in automotive fuel systems
Sammanfattning : The increase in service temperature and the use of biobased fuels, such as biodiesel, have raised concerns on the short/long-term performance of plastic components used in automotive fuel systems.In this work the ageing behavior of unreinforced and glass-fibre reinforced polyamide 12 (PA12), exposed to three different fuels (petroleum diesel, biodiesel, and a mixture of these (80/20)) at high temperature, was investigated. LÄS MER
17. Microscopic Modeling of Exciton-Polaritons in Two-Dimensional Materials
Sammanfattning : Integrating 2D materials into high-quality optical microcavities opens the door to fascinating many-particle phenomena including the formation of exciton-polaritons. These are hybrid quasi-particles inheriting properties of both the constituent photons and excitons. LÄS MER
18. Oxygen Induced High Temperature Crack Growth in Ni-base Superalloys
Sammanfattning : Oxygen induced crack growth is a serious concern for the performance of Ni-base superalloys. These alloys are used in gas-turbine engines where they are exposed to hightemperatures, mechanical loads and oxygen-rich environments. LÄS MER
19. Hydrodynamic control of retention in heterogeneous aquifers and fractured rock
Sammanfattning : In this thesis, fluid flow and solute transport in heterogeneous aquifers and particularly in frac-tured rock have been investigated using Lagrangian Stochastic Advective-Reaction (LaSAR) framework. The heterogeneity of the aquifer structure or fracture configuration, as well as the various reaction/retention processes have been considered in the modelling approach. LÄS MER
20. Formation factor logging in igneous rock by electrical methods
Sammanfattning : .... LÄS MER