Sökning: "pebble"
Visar resultat 1 - 5 av 21 uppsatser innehållade ordet pebble.
1. Gropar och vallar i klapper : En undersökning av lämningar i Västerbottens klapperfält
Kandidat-uppsats, Umeå universitet/Institutionen för idé- och samhällsstudierSammanfattning : Pits and mounds in pebble: A study of archaeological remains in ancient pebble beaches inthe county of Västerbotten. Pits (Sw. boplatsgropar) and mounds (Sw. boplatsvallar) in ancient pebble beaches are two types of archaeological remains that are common under the highest coastline in the county of Västerbotten, Sweden. LÄS MER
2. Forming wide-orbit planets via pebble accretion
Master-uppsats, Lunds universitet/Astrofysik; Lunds universitet/Fysiska institutionenSammanfattning : The possibility that detected substructures in protoplanetary disks, such as gaps, rings and cavities, are created by distant protoplanets has prompted an inquiry into the mechanism responsible for their formation. These wide-orbit young bodies are likely to form relatively rapidly in the outer regions of circumstellar disks. LÄS MER
3. Thermal-hydraulic safety analysis of the HTTU and GEMINI+ cores in TRACE
Master-uppsats, KTH/FysikSammanfattning : With the coming of Generation IV systems, there is a need for thermal-hydraulic codes to model such advanced reactors. Codes for High Temperature Gas-cooled Reactors (HTGRs) already exist, but often suffer from insufficient validation and little user experience. LÄS MER
4. A Geometallurgical Approach Towards the Correlation Between Rock Type Mineralogy and Grindability: A case study in Aitik mine, Sweden
Master-uppsats, Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurserSammanfattning : Aitik is a large copper porphyry type deposit located in northern Sweden, currently exploited at an annual rate of approximately 45Mt. The ore's exceptionally low head grade of 0.22 % Cu and varying degrees of hardness across the entire deposit pose challenges to the two fully autogenous grinding lines, each of which comprises a 22. LÄS MER
5. Aspects of erosion of restored trout spawning beds in two streams in Northern Sweden
Master-uppsats, SLU/Dept. of Wildlife, Fish and Environmental StudiesSammanfattning : Many rivers and streams in northern Sweden have been channelized due to timber floating. This has severely degraded the spawning habitats for salmon and trout, and therefore a common action when restoring channelized rivers is to establish new spawning beds by adding gravel to the streambed. LÄS MER