Sökning: "relative permeability"

Visar resultat 1 - 5 av 16 uppsatser innehållade orden relative permeability.

  1. 1. Torkstress hos urbana träd i Göteborg: Effekter av låg vattentillgång under torkan 2018

    Kandidat-uppsats, Göteborgs universitet / Institutionen för biologi och miljövetenskap; Göteborgs universitet / Institutionen för biologi och miljövetenskap

    Författare :Andrea Sartorius; [2023-10-27]
    Nyckelord :;

    Sammanfattning : During late spring and most of the summer in the year of 2018 the weather in Sweden was more extreme than normal, with high temperatures and few rainfalls. This resulted in a drought, of which the effects were noticed all over the country. One of the noticeable effects was an earlier leaf abscission from trees. LÄS MER

  3. 2. Permeation studies of Niacinamide and its effect on human skin

    Master-uppsats, Malmö universitet/Institutionen för biomedicinsk vetenskap (BMV)

    Författare :Andebrhan Fsahaye; [2023]
    Nyckelord :niacinamide; permeation; human skin; impedance; hydration;

    Sammanfattning :  Background: Niacinamide (NIA) is one of the most commonly used cosmetic ingredients. It belongs to the vitamin-B3 family and has extensive dermatological therapeutic benefits. NIA has been proven to be a useful skincare product in serving as anti-acne agent, preventing skin hyperpigmentation, removal of wrinkles from the face etc. LÄS MER

  4. 3. Numerical Simulations of Wave Propagation between a Left-Handed Material and a Right-Handed Material

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Balwan Rana; [2021]
    Nyckelord :Negative-Index Material; NIM; Positive-Index Material; RHM; Backward- Wave Propagation; Step-Index Interface; Graded-Index Interface; Left-Handed Material; LHM; Right-Handed Material; RHM; Analytical Solution; Validation; Negativt-Index Material; NIM; Positivt-Index Material; PIM; Bakåtvåg-utbredning; Steg-Index Gränssnitt; Gradering-Index Gränssnitt; Vänsterhänt Material; LHM; Högerhänt Material; RHM; Analytisk Lösning; Validering;

    Sammanfattning : The discovery of metamaterials has led to major advances in different fields of physics including optics, microwave engineering and acoustics. Specific to theoretical electromagnetism, the introduction of metamaterials have led to the development of negative-index materials (NIMs) with simultaneous negative permittivity and negative permeability with backward-wave propagation. LÄS MER

  5. 4. Framställning av magnetisk polymerkomposit : Stålpulverfylld epoxi med magnetiska egenskaper

    Uppsats för yrkesexamina på grundnivå, Uppsala universitet/Tillämpad materialvetenskap

    Författare :Linda Ek Fliesberg; Beatrice Linné; [2021]
    Nyckelord :material science; composites; magnetism; polymers; materialvetenskap; kompositer; magnetism; polymerer;

    Sammanfattning : To compete with other manufacturing companies in the market, product design and manufacturing methods need to be improved constantly. To save time and money, there is an advantage if there is a manufacturing plan in place before designing the final product. LÄS MER

  7. 5. Reaction Wheel Performance Characterisation and Assessment of Electromagnetic Interactions with Magnetic Torquers

    Master-uppsats, Luleå tekniska universitet/Institutionen för system- och rymdteknik

    Författare :Leonie Sander; [2021]
    Nyckelord :Reaction Wheel; Magnetic Torquers; Electromagnetism; Space Mechanism; Attitude Control;

    Sammanfattning : Having an in-depth knowledge on the performance characteristics of space mechanisms in flight operation, with special attention to nominal vs. anomalous performance, is vital for mission success. LÄS MER