Sökning: "Ragnar Larsson"
Hittade 5 avhandlingar innehållade orden Ragnar Larsson.
1. Numerical simulation of plastic localization
Sammanfattning : .... LÄS MER
2. The Adoption of a New Contraceptive Method – Surveys and Interventions Regarding Emergency Contraception
Sammanfattning : The overall aim of this thesis was to examine the adoption of emergency contraceptive pills (ECP) in Sweden. Two cross-sectional surveys and two quasi-experimental studies were used. LÄS MER
3. Preparation and characterisation of perovskite and noble metal promoted oxide based catalysts
Sammanfattning : This work concerns efforts to improve or replace noble-metal based catalysts used for car exhaust purification.Various oxide based catalysts have been prepared by impregnating washcoats such as (-Al2O3 and SiO2 with appropriate metal ions, and assemblies calcinated at elevated temperatures have been tested for catalytic activity in the oxidation of CO and C3H6 and reduction of NO. LÄS MER
4. Från ingenjörskonst till informatörskonst : studier av PR och riskkommunikation
Sammanfattning : This thesis discusses the external risk communication of industrial companies. Such risk communication is here viewed as a division of the companies’ PR operations. There are some central weak points in current risk communication research. LÄS MER
5. Light-weighting Methodology in Rail Vehicle Design through Introduction of Load Carrying Sandwich Panels
Sammanfattning : Lightweight design in rail vehicles has been important for quite some time. Structures have been optimised to fulfill their purpose and cut unnecessary weight to reach allowable axle loads. Classically this is done by using steel, thin-walled structures, throughout the car body, or, alternatively, power-pressed aluminum profiles. LÄS MER