Sökning: "scandium"

Visar resultat 1 - 5 av 9 uppsatser innehållade ordet scandium.

  1. 1. Analysis of DTLS Implementations Using State Fuzzing

    Kandidat-uppsats, Uppsala universitet/Institutionen för informationsteknologi

    Författare :Fredrik Tåkvist; [2020]
    Nyckelord :;

    Sammanfattning : Despite being unreliable, UDP is the prefered choice for a growing number ofimplementations due to its low latency. Hence, a means for protecting sensitive datasent over UDP is essential. The protocol most commonly used for this purpose is Datagram Transport Layer Security (DTLS). LÄS MER

  3. 2. Controversial Materials : Ethical issues in the production of mineral based raw materials

    Kandidat-uppsats, Uppsala universitet/Institutionen för teknikvetenskaper

    Författare :Emma Buratovic; Dervis Cocalic; Kasper Eliasson; Matilda Danestig; Linus Everlid; [2017]
    Nyckelord :controversial materials; environmental impact; social impact; minerals forecast; mining; critical materials; non-critical materials; aluminium; cobalt; copper; graphite; chrome; lithium; manganese; nickel; REEs; rare earth elements; scandium; silver; zinc; lead; PGM; NGO; non-government organisation;

    Sammanfattning : This report has investigated the ethical issues associated with mining or processing of materials that make them considered as controversial. For each material, the main areas of use and the top producing countries are analysed, followed by social and/or environmental issues as well as potential problems in the future. LÄS MER

  4. 3. From Bedrock to Porcelain : A study regarding the history of porcelain, Ytterby mine and the discovery of yttrium in Sweden

    Kandidat-uppsats, Stockholms universitet/Institutionen för geologiska vetenskaper

    Författare :Timmy Kärrström; [2017]
    Nyckelord :Porcelain; Ytterby; REE;

    Sammanfattning : Porcelain is a translucent vitreous material that consists of clay (kaolin), feldspar and quartz which has been mixed and heated together to cause a metamorphic reaction. In Sweden, the Porcelain industry was established in 1726 at Rörstrands castle in Stockholm and is today one of the oldest industries in Europe to produce porcelain. LÄS MER

  5. 4. Hyperfine structure measurements in scandium for IR spectroscopy

    Master-uppsats, Lunds universitet/Astronomi - Genomgår omorganisation; Lunds universitet/Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation

    Författare :Felix van Deelen; [2017]
    Nyckelord :Astrophysics; Atomic Data; Hyperfine Structure; Stellar Spectroscopy; Physics and Astronomy;

    Sammanfattning : Stellar abundances are important for understanding the chemical evolution of galaxies and provide us with constraints on stellar evolution and supernova nucleosynthesis. To determine stellar abundances accurately, atomic data is crucial. This data is incomplete for many elements, especially in the infrared region. LÄS MER

  7. 5. The Ytterby mine - A historical review and an evaluation of its suggested spatial coupling to multiple sclerosis (MS)

    Kandidat-uppsats, Stockholms universitet/Institutionen för geologiska vetenskaper

    Författare :Susanne Sjöberg; [2012]
    Nyckelord :Ytterby mine; REE; fuel deposit; multiple sclerosis; neurological health conditions;

    Sammanfattning : The Ytterby mine is located on Resarö island in the Stockholm archipelago. Mainly feldspars but also quartz were historically quarried in the mine, which is also the place of discovery of seven rare earth elements (REE). During the cold war era, the mine shaft was used as a diesel and jet fuel deposit for the Swedish Armed Forces. LÄS MER