Sökning: "Ray Wall"

Visar resultat 1 - 5 av 10 uppsatser innehållade orden Ray Wall.

  1. 1. Polymerized Tubular Silicates in Lower Cambrian Carbonates – Biology or Chemistry?

    Kandidat-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Scott Green; [2022]
    Nyckelord :biosignature; tubular structures; Lower Cambrian; silica precipitation; bifurcating; biosignatur; rörstrukturer; Kambrium Serie 3; kiseldioxid utfällning; förgrening;

    Sammanfattning : Shallow marine environments from the Lower Cambrian period were very different to shallow marine environments of today. Tubes of what was thought to be silica recovered from a partly dolomitized carbonate sample collected form a site near Indian Springs, Nevada could help further understand the chemistry and characteristics of such environments. LÄS MER

  3. 2. Characterization of Giant Proteins from Lactobacillus kunkeei

    Master-uppsats, Uppsala universitet/Institutionen för biologisk grundutbildning; Uppsala universitet/Strukturbiologi

    Författare :Martin Schol; [2020]
    Nyckelord :structural biology; protein expression; protein purification; Lactobacillus kunkeei; L. kunkeei; small angle X-ray scattering; SAXS; circular dichroism; CD; honey bee; honey crop; extracellular protein;

    Sammanfattning : Lactobacillus kunkeei is the most common and dominant bacterium in the honey stomach of honeybees. L. kunkeei has been isolated from honeybees all over the world. Genome sequencing has identified 5 genes for exceptionally large proteins in the genome of L. LÄS MER

  4. 3. Freeze-drying of protein pharmaceuticalin vials with different character

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Institutionen för farmaci

    Författare :Julia Falk; [2019]
    Nyckelord :;

    Sammanfattning : Freeze-drying of protein pharmaceuticals is a procedure frequentlyused to obtain stability of the active pharmaceutical ingredientduring distribution and storage. It can be performed in pre-filledsyringes, with a lubricous coating of silicone on the inside, toenable the piston moving. LÄS MER

  5. 4. Investigation of the origin of stray radiation at XFEL using FLUKA

    Kandidat-uppsats, Stockholms universitet/Fysikum

    Författare :Terese Hellström; [2019]
    Nyckelord :;

    Sammanfattning : The European X-Ray Free-Electron Laser facility (XFEL) provides ultra-short x-ray pulsesof high peak brilliance that are used in research to analyse atomic or molecular structures.The facility accelerates electrons and moves them through an undulator system consistingof several undulator cells containing permanent magnet poles supplying an alternatingmagnetic field, which causes the electrons to emit x-ray pulses. LÄS MER

  7. 5. Beamforming Solutions for Efficient Link Setup and Link Maintenance in mmWave Communication Systems

    Master-uppsats, Lunds universitet/Institutionen för elektro- och informationsteknik

    Författare :Hesham Sharkas; Haruhi Echigo; [2019]
    Nyckelord :5G; Beamforming; Beam-forming; Beam Management; Beam Searching; Beam Sweeping; Codebook; code-book; Initial Access; MIMO; MillimeterWave; millimeter wave; mmWave; mm-Wave; mm Wave; Precoding; Slepian Beam; Synthesizer; Beam Synthesizer; Technology and Engineering;

    Sammanfattning : Millimeter wave (mmWave band) technology has gained a lot of attention in 5G communications, due to large amounts of spectrum being available in the mmWave frequency range. However, mmWave links suffer from severe free-space loss and atmospheric absorption. LÄS MER