Sökning: "UV radiation"

Visar resultat 1 - 5 av 79 uppsatser innehållade orden UV radiation.

  1. 1. Investigation of Antenna Radomes in Low Earth Orbits

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

    Författare :Mathias Manohar Gren; [2023]
    Nyckelord :Materials; Science; Space; Satellites; Antenna Radomes; Beyond Gravity; Coatings; Physics; Chemistry; Low Earth Orbits; Engineering; Lunds University; Materials Chemistry; Technology and Engineering;

    Sammanfattning : Introduction: This master’s thesis focuses on exploring improved alternative material solutions for antenna radomes used to protect Beyond Gravity Sweden’s satellite antennas in low Earth orbits. Background: As the environment in low Earth orbit is harsh, surface materials on satellites experience high levels of atomic oxygen, ultra violet radiation, thermal-fluctuation, charged particles and micro meteoroids. LÄS MER

  3. 2. Optical properties of water absorbing textiles for camouflage

    Master-uppsats, Linköpings universitet/Institutionen för fysik, kemi och biologi

    Författare :Eveline Örtenberg; [2023]
    Nyckelord :Camouflage; SWIR; Water; Nanocellulose; CNF; Textiles;

    Sammanfattning : Background matching, a form of camouflage, involves species developing patterns and coloration that closely resemble their environment. Humans have utilized camouflage and background matching, particularly in military applications, to reduce detectable characteristics, known as signatures. LÄS MER

  4. 3. Development and Evaluation of an Enzyme-Based Sunscreen

    Master-uppsats, Lunds universitet/Bioteknik; Lunds universitet/Bioteknik (master)

    Författare :Karolina Eriksson Torfgård; [2023]
    Nyckelord :Enzyme activity; UV-filter; Protease; Biotechnology; Technology and Engineering;

    Sammanfattning : Ultraviolet radiation (UVR), specifically of UVA and UVB, has been associated with the development of both photoaging and photo-carcinogenesis, potentially leading to cancer. The use of sun protection in the form of UV filters is known to minimize these damages. LÄS MER

  5. 4. Ubox : Automatic sunscreendispenser

    Uppsats för yrkesexamina på grundnivå, Högskolan i Halmstad/Akademin för företagande, innovation och hållbarhet

    Författare :Jenny Dahl; Lisa Stavhagen; [2022]
    Nyckelord :;

    Sammanfattning : With the purpose of reducing the growing disease of skin cancer, the idea of ​​an automated sunscreen dispenser called Ubox arose. The sun's UV radiation damages human cells, which can thus begin to divide uncontrollably and give rise to skin cancer. LÄS MER

  7. 5. Contribution to Sustainable Water Management in oligotrophic mountainous rivers : Sunlight induced inactivation of Escherichia coli under the influence of physicochemical parameters water-color and water depth

    Master-uppsats, Mittuniversitetet/Institutionen för ekoteknik- och hållbart byggande

    Författare :Béla efternamn:Szépfalusi Student 1; [2022]
    Nyckelord :bacterial inactivation; E. coli; UV-radiation; water color; water depth; sustainable water management;

    Sammanfattning : Water is essential for life on earth. Human society is challenged to sustain sufficient water quantity of good quality. This objective is reflected in sustainable development goal 6, “clean water and sanitation”. LÄS MER