Sökning: "headspace"

Visar resultat 11 - 15 av 32 uppsatser innehållade ordet headspace.

  1. 11. An annual evaluation of CH4 oxidation in a freshwater lake

    Kandidat-uppsats, Linköpings universitet/Tema Miljöförändring

    Författare :Eldina Cehic; [2020]
    Nyckelord :Methane oxidation; isotopic fractionation; stratification; open steady-state and closed system.; Metanoxidation; isotopfraktionering; stratifiering; öppet stabilt system och stängt system;

    Sammanfattning : Freshwater lakes constrain its methane (CH4) emissions through CH4 oxidation. CH4 includes three carbon (C) isotopes; the stable isotopes 12C,13C and the unstable and more uncommon isotope 14C. Methanotrophs (i.e. LÄS MER

  3. 12. Grafisk Design för välmående i en digital värld – En fenomenologisk undersökning och visuell retorisk analys av Headspace användargränssnitt och design

    Kandidat-uppsats, Malmö universitet/Fakulteten för kultur och samhälle (KS)

    Författare :Stina Axelsson; [2020]
    Nyckelord :Användargränssnitt; Grafisk design; Mindfulness; Mobilapplikation; Ontologiska design; Visuell Retorik;

    Sammanfattning : Headspace är en mindfulnessinriktad mobilapplikation som ämnar att förbättra användarens välmående. Denna uppsats syfte är att undersöka hur Headspace som mobilapplikation i sitt användargränssnitt och visuella uttryck påverkar mottagaren. LÄS MER

  4. 13. "Using the bad for something good" : Exploring the possible paradox of meditation apps in light of digital stress

    Master-uppsats, Uppsala universitet/Medier och kommunikation

    Författare :Johanna Rose; [2020]
    Nyckelord :meditation apps; mHealth; meditation; Headspace; mindfulness; digital stress; technostress;

    Sammanfattning : This study investigates meditation apps from a user perspective. While focusing on the user, interviews with psychologists and an auto-ethnographic study of three different meditation apps were used to inform the research, enrich the findings and create an as wholesome as possible picture. LÄS MER

  5. 14. Evaluation of pre-concentration techniques for gas chromatographic determination of low amounts of volatile contaminants and degradation products

    H-uppsats,

    Författare :Erik Nylander; [2019-07-03]
    Nyckelord :Analytisk kemi; Miljövetenskap; Analytical Chemistry; Environmental Sciences;

    Sammanfattning : The project investigated the compared two pre-concentration methods, Thermal Desorption System (TDS) coupled to a Thermal Extractor (TE) and Multiple Headspace Injection (MHI) using a Multiple Purpose Sampler (MPS) for detecting volatile amines in solid pharmaceutical products and synthesis precursor chemicals samples. The TDS-TE and MHI extractions are directly injected into a Cold Injection System (CIS). LÄS MER

  7. 15. Development of a Water Activity Control and Reaction Monitoring System for Acidolysis and Transesterification Reactions using Immobilized Lipases in a Rotating Bed Reactor

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

    Författare :Eimantas Gladkauskas; [2019]
    Nyckelord :Enzyme; Enzymes; Immobilized enzyme; bioreactor; rotating bed reactor; acidolysis; transesterification; arduino; water activity; thermodynamic water activity; Enzyme activity; automatic reaction tracking; reaction tracking; biotechnology; electrical engineering; relative humidity; spinchem; enzymatic synthesis; water activity control; process automation; lipases; lipase; bioteknik; Technology and Engineering;

    Sammanfattning : Controlled water activity in an enzymatic reaction can influence enzyme activity and productivity. A small layer of water around an enzyme gives it a required flexibility to catalyze reactions at a higher rate in contrast with the one that is dry (Adlercreutz, Dicko, Larsson, & Månsson, 2017). LÄS MER