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Visar resultat 1 - 5 av 12 uppsatser som matchar ovanstående sökkriterier.
1. Extraction of Backfilled Tailings in the Dannemora Mine – Economic Potential and Rock Stability Assessment
Master-uppsats, Uppsala universitet/Institutionen för geovetenskaperSammanfattning : The cut-off grade determines what rock mass are economic to mine. At the Dannemora mine, in eastern Bergslagen, Sweden, previously processed ore generated tailings (enrichment sand) with an iron content of 21-22 % that was backfilled into large open bodies (stopes) in the mine between 2013-2015. LÄS MER
2. Geochemical tracing of Arsenic sources in groundwater at the remediated Storliden mine, Skellefte district
Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurserSammanfattning : The Swedish mining industry has changed from the historical situation with several smaller mines to the present situation with a few, bigger mines. This results in presence of abandoned mines around Sweden. Remediation of mines is regulated by legislation and the present demands are considerably higher than it was some decades ago. LÄS MER
3. Simulation of THz Quantum Cascade Lasers
Master-uppsats, Lunds universitet/Matematisk fysik; Lunds universitet/Fysiska institutionenSammanfattning : Quantum Cascade Lasers (QCLs) have since their invention in 1994 become a crucial source for mid-infrared and THz radiation. Mid-infrared QCLs have achieved room temperature operation while THz QCLs have not. As such, simulations are an important tool in order to achieve a THz QCL operational at room temperature. LÄS MER
4. Circular economy in the construction industry: An insight into the difficulties and possibilities with improving the concrete recycling rate for housing in Sweden
Master-uppsats, Uppsala universitet/Institutionen för geovetenskaperSammanfattning : In accordance with the Paris Agreement and the national goal of climate neutrality by 2045, Sweden needs to lower its greenhouse gas emissions. The second-largest source of CO2 emissions in the country comes from the production of cement, one of the main ingredients of concrete. LÄS MER
5. Fyllning kring kablar och rör med krossat bergmaterial
M1-uppsats, Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurserSammanfattning : Ground consultants and pipe manufacturers follow various recommendations, two of which are AMA (General Material and Work Description) and EBR (Powerlines branches guidelines). The project focuses on the AMA references to the installation of pipes and cables. LÄS MER
