Sökning: "enhanced formation"
Visar resultat 1 - 5 av 613 avhandlingar innehållade orden enhanced formation.
1. Alkali-enhanced gasification of biomass : laboratory-scale experimental studies
Sammanfattning : Gasification seeks to break carbonaceous materials into synthetic gas (CO+H2) which can be subsequently upgraded into valuable products. Thus gasification can be utilized to convert low grade biomass stocks into carbon-neutral chemicals heat and power. LÄS MER
2. Oxide Formation and Degradation during Erosion-Corrosion of Iron and Nickel Based Alloys
Sammanfattning : Erosion-corrosion is, in many technical applications, a serious material degradation process caused by dynamic particle/fluid mixtures. Pipes transporting particle containing liquids, jet engines, gas turbines, and fluidised bed combustion (FBC) power plants are examples of systems which are considered to be especially susceptible. LÄS MER
3. The relationship between fly ash chemistry and the thermal formation of polychlorinated pollutants during waste incineration
Sammanfattning : The thermal formation of polychlorinated dibenzo-p-dioxins (PCDDs), dibenzofurans (PCDFs), biphenyls (PCBs), and naphthalenes (PCNs) is a major problem in waste incineration. Ideally, rather than relying on air cleaning systems and treatment techniques, their formation should be minimized or, if possible eliminated. LÄS MER
4. On nano size structures for enhanced bone formation
Sammanfattning : Purpose The general aim of the present thesis was to investigate early bone response to titanium implants modified with nano size structures. Therefore, 1. a model to evaluate titanium implants modified with nano size structures was validated; 2. a suitable detection method of nano size structures was implemented. LÄS MER
5. Removal of natural organic matter by enhanced coagulation in Nicaragua
Sammanfattning : The existence of trihalomethanes (THMs) in a drinking water plant of Nicaragua has been investigated in order to see whether the concentration exceeded the maximum contaminant level recommended by the environmental protection agency of the United States (USEPA) and the Nicaragua guidelines. The influence of pH, temperature, chlorine dose and contact time on the formation of THMs were studied. LÄS MER