Sökning: "Liquid Oxygen"

Visar resultat 6 - 10 av 75 uppsatser innehållade orden Liquid Oxygen.

  1. 6. Understanding the potential future capacity of distributing green steel solutions - current knowledge and future challenges

    Magister-uppsats, Linnéuniversitetet/Institutionen för biologi och miljö (BOM)

    Författare :Heba Alwan; [2023]
    Nyckelord :Carbon dioxide CO2 ; greenhouse gas GHG emissions; Steelmaking fossil-free; direct hydrogen reduction; Sustainability transitions.;

    Sammanfattning : Transitioning from the conventional steel process to a direct hydrogen reduction process in the steel industry is a significant step towards reducing carbon dioxide emissions and achieving greater sustainability. The process involves using hydrogen gas as a reducing agent instead of carbon to remove oxygen from the iron ore. LÄS MER

  3. 7. Real time estimations of kLa and viscosity in a fermentation pilot plant

    Master-uppsats, Lunds universitet/Kemiteknik (CI)

    Författare :Arvid Norberg; [2022]
    Nyckelord :Oxygen transfer; Viscosity; Fermentation; Biotechnology; Direct method; kLa; OUR; DO; Online monitoring; Soft sensor; Fungus; Fungal fermentation; A. oryzae; A. niger; Herschel-Bulkley; Power law; Shear thinning; Novozymes; Enzymes; Technology and Engineering;

    Sammanfattning : Fermentation is a process that utilizes live microorganisms to produce different biological products such as enzymes. The oxygen mass transfer rate is often the limiting factor in aerobic fermentations and thereby an important process parameter. LÄS MER

  4. 8. Numerical Approach to the Design and Optimisation of a Bi-Propellant Pintle Injector

    Master-uppsats, Luleå tekniska universitet/Rymdteknik

    Författare :Erik Andersson; [2022]
    Nyckelord :pintle injector; optimisation; propulsion; liquid propellant;

    Sammanfattning : Rocket propulsion is of vital importance for space travel. New innovations are continuously developed in order to facilitate the demand of the rapidly evolving space sector. Recently a focus on reusable rockets has appeared due to the economical and environmental benefits they bring. LÄS MER

  5. 9. The effect of temperature on the chemical stability of Vitamin C in a cosmetic product – Development of an HPLC-method for quantitative analysis

    Master-uppsats, KTH/Tillämpad fysikalisk kemi

    Författare :Sofia Thuresson; [2022]
    Nyckelord :Vitamin C; HPLC; Stability; Degradation; Antioxidant; Vitamin C; HPLC; Stabilitet; Nedbrytning; Antioxidant;

    Sammanfattning : Vitamin C är en populär ingrediens i hudvårdsprodukter, bland annat på grund av dess positiva effekter på kollagen-produktionen i huden och dess antioxidativa egenskaper. Dessvärre är vitamin C en känslig ingrediens som lätt bryts ned av ljus, syre, hög temperatur eller fel pH-värde. LÄS MER

  7. 10. Numerical and experimental investigation of multiple gas jet flow behaviour in the gas atomization process

    Master-uppsats, KTH/Materialvetenskap

    Författare :Mahsa Darvishghanbar; [2022]
    Nyckelord :;

    Sammanfattning : In several industrial applications, the interaction of supersonic gas jets is encountered such as gas atomization, jet engines and the basic oxygen furnace process. In the gas atomization process, high pressure gases are converted to high velocity gas jets through convergent-divergent nozzles. LÄS MER