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Visar resultat 1 - 5 av 9 uppsatser som matchar ovanstående sökkriterier.

  1. 1. Potassium in the Galactic Bulge - as traced by microlensed dwarf & sub-giant stars

    Kandidat-uppsats, Lunds universitet/Astrofysik; Lunds universitet/Fysiska institutionen

    Författare :Lukas Jönsson; [2023]
    Nyckelord :Nucleosynthesis; Galactic Bulge; Potassium; Non-Local-Thermal-Equilibrium; Physics and Astronomy;

    Sammanfattning : During this report the potassium (K) trend in the Galactic Bulge, with respect to metallicity and various α-elements, has been computed and evaluated by a method of line synthesis on the 7698.96 ̊A KI line (7699 KI), where Non-Local-Thermal-Equilibrium (NLTE) effects have been considered. LÄS MER

  3. 2. Correlation between Surface and Tumour Motion in Lung Cancer - including Deep Learning Perspectives

    Master-uppsats, Lunds universitet/Sjukhusfysikerutbildningen

    Författare :Caisa Kjellström; [2023]
    Nyckelord :Medicine and Health Sciences;

    Sammanfattning : Purpose: The purpose of this master thesis was to retrospectively investigate correlation between surface and tumour motion in lung cancer patients, alongside deep learning applications of the results. Additional correlations such as age, tumour volume and anatomical placement of the tumour were also investigated. LÄS MER

  4. 3. In-situ Growth of Sn-seeded GaAs and GaSb Nanowire Heterostructures

    Master-uppsats, Lunds universitet/Centrum för analys och syntes

    Författare :Azemina Kraina; [2023]
    Nyckelord :nanowire; heterostructure; ETEM; MOCVD; TEM; in-situ; Sn; GaAs; GaSb; materials chemistry; Technology and Engineering; Chemistry;

    Sammanfattning : One of the ways to utilize III-V nanowires, is to make use of the possibility to combine materials and create heterostructures which allows for creating material combinations with new properties. A special interest can be taken into Sb-containing nanowires due to the high electron mobility, however there has been reported difficulties with switching to other materials because of a 'memory effect' where Sb lingers in the system and nanowire. LÄS MER

  5. 4. Emissioner av nanotrådar från epitaxisubstrat

    Master-uppsats, Lunds universitet/Ergonomi och aerosolteknologi

    Författare :Camilla Abrahamsson; [2021]
    Nyckelord :Nanosäkerhet; epitaxi; arbetsplatsrisk; aerosol; hälsorisk; Technology and Engineering;

    Sammanfattning : Morfologiska likheter med asbest tillsammans med toxikologiska studier i celler och försöksdjur har väckt oro för de potentiella hälsoriskerna om nanotrådar kan bli luftburna och inandas vid hantering. Nanotrådar växta på substrat genom epitaxi kan riskera att skadas under hantering vid förberedelse för analys i mikroskop och detta examensarbete ämnar undersöka huruvida nanotrådar eller fragment av dessa kan lossna från substratet och bli luftburna då detta händer. LÄS MER

  7. 5. GaSb nanowire transistors with process induced strain

    Master-uppsats, Lunds universitet/Fysiska institutionen; Lunds universitet/Förbränningsfysik

    Författare :Edvin Winqvist; [2017]
    Nyckelord :GaSb; gallium; antimonide; nanowire; transistor; strain; physics; thesis; Physics and Astronomy;

    Sammanfattning : With the constant downscaling of Si transistors reaching its limits, other alternatives have been actively researched the past decades. Group III-V semiconductors are excellent materials with generally high carrier mobilities that can replace Si in transistors. LÄS MER