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Showing result 1 - 5 of 7 essays matching the above criteria.

1. 1. Dependence of Degradation Mechanisms in Magnesium Alloys on Grain Orientation and Interfaces in 3D

   University essay from Lunds universitet/Materialteknik

   Author : Johan Ranstad; [2023]
   Keywords : Mg-Zn alloys; Diffraction contrast tomography; Isothermal Calorimetry; Immersion testing; Corrosion Rate; Microgalvanic coupling.; Technology and Engineering;

   Abstract : Magnesium alloys are promising candidates as biomedical implants. However, a good understanding of their degradation processes is lacking. In this work, degradation in two magnesium alloys were studied in a simple physiological-fluid electrolyte of H2O+0.9wt%NaCl, Mg-5wt%Zn (Z5) & Mg-5wt%Zn-0. READ MORE

3. 2. Mer växtkraft i trädgårdslandet med bokashi? : ett jämförande odlingsförsök med bokashi, traditionell kompost, BSF-kompost och biogödsel

   University essay from SLU/Dept. of Soil and Environment

   Author : Sara Norberg; [2022]
   Keywords : EM; återvinning; matavfall;

   Abstract : Att ta vara på matavfall från hushållen är viktigt för att ställa om till ett hållbart samhälle med cirkulära system för näringsämnen och energi. Hemkompostering nämns i EU:s direktiv om avfallshantering som en metod för att återvinna bioavfall där det uppstår. READ MORE

4. 3. CFD Simulation of Urea Evaporation in STAR-CCM+

   University essay from Linköpings universitet/Mekanisk värmeteori och strömningslära

   Author : Oscar Ottosson; [2019]
   Keywords : Urea; AdBlue; SCR; Solid Deposit; NOx; nitrogen oxides; CFD; speedup; spray simulation; UWS; diesel after-treatment; STAR-CCM ; AVL Fire; Scania; Sweden; NXPS; LiU; DOE; Urea; AdBlue; SCR; Klump; NOx; kvävedioxider CFD; uppsnabbning; spray simulering; UWS; efterbehandling av diesel-motor; STAR-CCM ; AVL Fire; Scania; Sverige; NXPS; LiU; DOE;

   Abstract : Diesel engines produce large amounts of nitrogen oxides (NOX) while running. Nitrogen oxides are highly toxic and also contribute towards the formation of tropospheric ozone. READ MORE

5. 4. CFD-simulations of urea-waterspray in an after-treatment systemusing Star-CCM+

   University essay from KTH/Mekanik

   Author : Emelie Trigell; [2018]
   Keywords : after-treatment systems; selective catalytic reaction SCR ; AdBlue; multiphase flow; multi-component liquid; Unsteady Reynolds Average Navier Stokes RANS ; wall film formation; solid deposits; efterbehandlingssystem; selektiva katalytiska reaktioner; AdBlue; flerfasstr ¨ommning; flerkomponentvätska; Unsteady Reynolds Average Navier Stokes; väggfilm; avlagringar;

   Abstract : The legislation has forced the vehicle industry to reduce tail-end emissions. The air pollutant nitrogen oxide (NOX) has been shown to have a negative impact on human health and the environment. One of the key technologies to reduce the levels of NOX emitted from a vehicle is by implementing an after-treatment system. READ MORE

6. 5. Constraining the Potential of the Milky Way using Stellar Streams

   University essay from Lunds universitet/Astronomi - Genomgår omorganisation

   Author : Timmy Ejdetjärn; [2017]
   Keywords : stellar streams; Milky Way; potential; confidence region; orbital approximation; MW; CR; halo; disc; constrain; mass; orbit; simulation; simulated; fitting; likelihood; Physics and Astronomy;

   Abstract : The orbital approximation for stellar streams is the assumption that all stars in a stream can be described as following the same orbit. In this thesis, I evaluate this approximation as a method for constraining the potential of the Milky Way. READ MORE