Essays about: "spårämnen"
Showing result 1 - 5 of 26 essays containing the word spårämnen.
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1. Effect of Trace Elements on the Particle Size of Magnesium Silicide in Aluminium Extrusion : The Use of Thermo-Calc and DICTRA in order to Produce Aluminium more Efficiently
University essay from KTH/MaterialvetenskapAbstract : This project is a feasibility study for Hydro Extrusion Sweden AB, a company that produces extruded aluminium profiles. The main purpose of this project was to analyse the difference of Mg2Si particle sizes in aluminium alloys when varying parameters, such as cooling rate and composition, in aluminium extrusion, particularly the EN AW 6082 alloy. READ MORE
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2. How variations of the duration and time to peak of the Chicago Design Storm affect the hydraulic response, as well as the areas contributing to peak runoff, of a synthetic urban catchment area
University essay from Uppsala universitet/Luft-, vatten- och landskapsläraAbstract : With an expanding urbanization in the world, and thus the expansion of impermeable surfaces, the risk of pluvial floods is an increasing factor that needs to be considered. This, in combination with increasing rain intensities and frequency of rain events indicates a problem both today and for the future. READ MORE
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3. Circularity of aluminium: Mapping difficulties in scrap circulation : A literature study and interviews with actors with focus on aluminium circulation in Sweden
University essay from KTH/MaterialvetenskapAbstract : Aluminium has great properties that are utilised the world over, but the production of primary aluminium is very energy intensive. In order to reduce the energy-cost, the aluminium can be recycled by re-melting aluminium scrap. READ MORE
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4. Critical elements scavenged by secondary gypsum and HFO : Determined by sequential extraction combined with mineralogical studies
University essay from Luleå tekniska universitet/Geovetenskap och miljöteknikAbstract : The demand for metals is great for the purpose of developing green technologies, and EU has listed 30 metals and minerals that are of critical importance for the maintenance and evolving of today’s society, so called critical materials. However, mining of raw materials generates mine waste which can have adverse effect on human health, ecosystems, and surrounding areas. READ MORE
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5. An Overview of State-of-the-art Hydraulic Conductivity Measurements in Coarse Grained Materials
University essay from Uppsala universitet/Institutionen för geovetenskaperAbstract : Embankment dams are made from soil materials of varying sizes and widely used all over the world.When constructing these, knowing the hydraulic conductivity (K) of the soil materials is a keyparameter in order to construct safe embankment dams. A knowledge gap regarding K measurementsin coarse grained soils has been identified. READ MORE