Sökning: "Volatile substance"

Visar resultat 1 - 5 av 13 uppsatser innehållade orden Volatile substance.

  1. 1. Air Recirculation System for Electrolyte Filling Room : A CFD study of VOCs Distribution in Clean & Dry room

    Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)

    Författare :Lin Chen; [2022]
    Nyckelord :Clean Dry room; Air Recirculation; Air Recovery; ANSYS FLUENT; Energy-saving; Environmental impact; Building Automation system; Rent torrt rum; luftåtercirkulation; luftåtervinning; ANSYS FLUENT; energibesparande; miljöpåverkan; byggnadsautomationssystem;

    Sammanfattning : Energy storage development is an important step for the energy transition, meanwhile Lithium-ion battery is the most common core component of electric vehicles. Over the past decade, investment has been poured into lithium-ion battery production, as a result, the production environment (Clean & Dry room) used for some processes such as Stacking, Electrolyte filling and so on and the energy consumption to maintain this special environment which precise control of air humidity and air cleanliness have become major concerns. LÄS MER

  3. 2. Analysis of polyfunctional thiols in beer : Developing a novel method of extraction and analysis using GC-FID

    Master-uppsats, Lunds universitet/Livsmedelsteknik och nutrition (master)

    Författare :Arvid Lindmark; [2022]
    Nyckelord :Beer; Hops; Thiols; 3MHA; 4MMP; Food Technology; Agriculture and Food Sciences;

    Sammanfattning : In this project, attempts were made to identify and quantify two polyfunctional thiols – 4-mercapto-4-methyl-pentanone and 3-mercaptohexyl acetate – and three monoterpene alcohols – linalool, geraniol, and β-citronellol – in beer samples. In order to avoid the use of hazardous compounds such as dichloromethane and hydroxymercuriobenzoate, common in traditional methods, two novel techniques were tested: a pure liquid-liquid extraction of the beer samples with cyclohexane, and a liquid-liquid extraction with cyclohexane followed by solid phase extraction on silver ion columns. LÄS MER

  4. 3. Covid-19 Related Conspiracy Theories on Social Media : How to identify misinformation through patterns in language usage on social media

    Kandidat-uppsats, Linköpings universitet/Institutionen för datavetenskap

    Författare :Oskar Savinainen; Thor Hvidbjerg Hansen; [2022]
    Nyckelord :LDA; sentiment analysis; covid-19; conspiracy theories; topic modelling; social media; reddit; language patterns; machine learning;

    Sammanfattning : Distinguishing between information and disinformation is an ever growing issue. The dramatic structure of a conspiracy theory easily captures a large audience and with the advent of social media, this disinformation can spread at an ever growing rate. LÄS MER

  5. 4. Produktion av polyhydroxialkanoater (PHA) med Bacillus megaterium

    Kandidat-uppsats, Högskolan i Borås/Akademin för textil, teknik och ekonomi

    Författare :Shahdokht Arab Goueini; [2021]
    Nyckelord :Bacillus megaterium; biopolymerer; polyhydroxialkanoater; polyhydroxibutyrat;

    Sammanfattning : Plastproduktionen och användningen av plast ökar varje år i hela världen och detta är ett av världens största problem. Plaster är ett svårnedbrytbart ämne och processen kan ta hundratals år. Detta leder i sin tur till att plastackumuleringen orsakar skadlig påverkan på klimat, miljö och människor. LÄS MER

  7. 5. The feasibility of using macroalgae from anaerobic digestion as fertilizer in Grenada : A literature study of the potential use of residue as fertilizer in Grenada, and a complementary laboratory study to evaluate the biogas potential

    Kandidat-uppsats, KTH/Hållbar utveckling, miljövetenskap och teknik

    Författare :Anna Sterley; Daniel Thörnkvist; [2020]
    Nyckelord :Methane; Carbon dioxide; Heavy metals; Sodium hydroxide; Normal cubic meter; Renewable energy; Saccharina latissima; Small Island Developing States; Total solids; Volatile substance; Wet weight; Biokemisk metanpotential; Metan; Koldioxid; Tungmetaller; Natriumhydroxid; Normalkubikmeter; Förnybar energi; Saccharina latissima; Small Island Developing States; Torrsubstans; Organiskt material; Våtvikt;

    Sammanfattning : Coastal areas in Grenada and the Caribbean are experiencing an abundance of stranded macroalgae. Climate change and eutrophication are probable causes of this inconvenience. This leads to logistic and economic dilemmas for the Caribbean societies. LÄS MER