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Showing result 1 - 5 of 7 essays matching the above criteria.

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

    University essay from Lunds universitet/Centrum för analys och syntes

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

    Abstract : 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. READ MORE

  3. 2. Kvalitetsförändringar i ’Elise’- äpplen efter öppning av ULO-lager

    University essay from SLU/Dept. of Plant Breeding (from 130101)

    Author : Dag Pålsson; [2023]
    Keywords : Äpplen; lagring; shelf-life; kvalité; fasthet; sockerinnehåll; livsmedelsförluster;

    Abstract : För att kunna erbjuda konsumenter svenskproducerade äpplen över en stor del av året lagras frukten i sk ULO (ultra low oxygen) -lagring. Genom att temperatur, relativ fuktighet och atmosfär reglerass kan biologiska processer, såsom respiration och etylenproduktion, kontrolleras och sänkas vilket resulterar i att frukten håller längre och har bättre kvalité över en längre tid. READ MORE

  4. 3. Fouling Dependency of Air in Dairy Processing

    University essay from Lunds universitet/Kemiteknik (CI)

    Author : Erik Lorin; [2018]
    Keywords : Fouling; Dairy; UHT; Bubble; Bubble induced fouling; Drying; THE; Dairy Processing; Processing; Bubble Nucleation; Differential Pressure; Oxygen sensors; chemical engineering; kemiteknik; Agriculture and Food Sciences; Chemistry; Technology and Engineering;

    Abstract : In this master thesis project, the formation of fouling on heat exchanger surfaces in dairy processing and mainly the influence of air was examined. Based on prior experimental findings regarding the influence of air bubbles in combination with calculations based on solubility properties of air in milk, a hypothesis was stated. READ MORE

  5. 4. Water assisted CO intercalation underneath Ir(111) supported graphene studied with scanning tunneling microscopy

    University essay from Lunds universitet/Synkrotronljusfysik; Lunds universitet/Fysiska institutionen

    Author : Kaivalya Mevada; [2018]
    Keywords : Graphene; Intercalation; STM; CVD; TPG; Physics and Astronomy;

    Abstract : Graphene have attracted attention recently due to its unique properties and opportunities for development of high performance carbon based devices. The intercalation, absorption and reactions processes of small molecules above and below the graphene islands hold the key for new perspectives in catalysis, molecular sensors and other technologies. READ MORE

  6. 5. Characterization of exosomes from glioma cells under hypoxia

    University essay from Lunds universitet/Examensarbeten i molekylärbiologi

    Author : Katarina Tomazin; [2015]
    Keywords : Biology and Life Sciences;

    Abstract : Exosomes are cell-secreted nanosized (30-200 nm) membrane vesicles that contain cytosol proteins and nucleic acids (mRNA, miRNA and mDNA). They have been characterized to be released by most cell types and thus, represent an important part of cell-cell communication. READ MORE