Essays about: "trace"

Showing result 11 - 15 of 606 essays containing the word trace.

  1. 11. Fitting a photospheric prompt emission model to GRB data: The Kompaneets RMS approximation (KRA)

    University essay from KTH/Fysik

    Author : Oscar Wistemar; [2023]
    Keywords : Gamma-Ray Bursts; Astrophysics; Engineering Physics; Gamma-Blixtar; Astrofysik; Teknisk Fysik;

    Abstract : Gamma-ray bursts (GRBs) are some of the most energetic events in the universe. Shocks occurring below the photosphere are likely radiation mediated shocks (RMSs) and are suspected to shape the spectra. Due to computational costs of simulating RMSs, models had not been fitted to data and a faster model was needed. READ MORE

  3. 12. The effect of recycling and processing routes on recrystallization in a secondary 3xxx aluminium alloy

    University essay from Jönköping University/JTH, Material och tillverkning

    Author : Anton Rolseth; [2023]
    Keywords : Aluminium alloys; sheet metal forming; grain boundary segregation; recrystallization; Zener pinning; casting; rolling;

    Abstract : Aluminium alloys have the possibility to be infinitely recycled. By only generating 5% of the emissions compared to primary aluminium, great CO2 savings can be made. One of the issues in manufacturing components entirely from post-consumer scrap is the presence of trace elements and impurities. Such elements can be Fe, Cu, Cr, P and Pb. READ MORE

  4. 13. Mapping the pig value chain in the Dominican Republic with emphasis on the risk of transmission of African swine fever

    University essay from SLU/Dept. of Clinical Sciences

    Author : Andrea Hentz; [2023]
    Keywords : African swine fever; Domestic pig; Value chain mapping; Pig production; Biosecurity; Disease risk;

    Abstract : As in many other parts of the world, pigs provide an important source of food and income in the Dominican Republic (DR). However, the pig production in the country faces great challenges since African swine fever (ASF) was reintroduced in 2021, after being absent for over 40 years. READ MORE

  5. 14. 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/Materialvetenskap

    Author : Gustav Boustedt; Johan Alexander Valentin Nygren; Gustav Strandgård; [2023]
    Keywords : Thermo-Calc; DICTRA; simulations; EN AW 6082; extrusion; particle precipitation; Mg2Si; sustainable; trace elements; aluminium;

    Abstract : 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

  6. 15. Asepticity In Dentistry Based On The Cleanliness Of Selected Test Surfaces

    University essay from Umeå universitet/Institutionen för odontologi

    Author : Maria Yaro; Roz Lafta; [2023]
    Keywords : ;

    Abstract : ABSTRACT Background: An adequate basic hygiene routine has a significant factor in healthcare but also in dental care. This is critical during endodontic treatments that should be carried out under aseptic conditions to provide successful results. READ MORE