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Visar resultat 1 - 5 av 805 avhandlingar som matchar ovanstående sökkriterier.
1. Mineralogical influence on leaching behaviour of steelmaking slags : a laboratory investigation
Sammanfattning : The Swedish steelmaking industry produces large amounts of by-products. In 2008, the total amount of slag produced reached approximately 1,300,000 metric tons, of which 20% was deposited. LÄS MER
2. Tailored process gases for laser powder bed fusion
Sammanfattning : Metal laser powder bed fusion (L-PBF) allows for production of complex components using the energy from a laser to locally melt micron-sized powder following a layer-wise approach. Considerable scientific efforts are focused on addressing the influence of the process parameters on the melting stability and the control of material properties, while developing necessary monitoring and characterization tools. LÄS MER
3. Process intensification in mechanical pulping : Reduced process complexity and improved energy efficiency
Sammanfattning : This work shows that, for newsprint quality grades, the production processes for mechanical pulp can be simplified, and the specific electrical energy demand can be reduced with around 600 kWh/ton (30%). The purpose of the work is to demonstrate how the production cost for mechanical pulps can be decreased through increased energy efficiency and reduced number of unit operations. LÄS MER
4. Quality of clinical laboratory services in Rwanda
Sammanfattning : Introduction: Poor quality health care is a serious silent public health problem worldwide, resulting in deaths, disabilities and long hospital stays with unnecessary costs. It affects patients in all countries regardless of their level of development. LÄS MER
5. Relay Feedback and Multivariable Control
Sammanfattning : This doctoral thesis treats three issues in control engineering related to relay feedback and multivariable control systems. Linear systems with relay feedback is the first topic. Such systems are shown to exhibit several interesting behaviors. LÄS MER