Essays about: "Kemiska processer"

Showing result 21 - 25 of 82 essays containing the words Kemiska processer.

  1. 21. Relativistic attosecond electron pulses by laser wakefield acceleration

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

    Author : Cornelia Gustafsson; [2020]
    Keywords : laser wakefield accelerator; laser wakefield acceleration; attosecond; electron pulses; Physics and Astronomy;

    Abstract : The search for cheaper and more compact accelerators has led to the development of laser-driven plasma-based accelerators. In comparison to conventional particle accelerators, the plasma-based accelerator is inherently insensitive to the breakdown of the acceleration structure and therefore greater accelerating fields can be obtained. READ MORE

  3. 22. Aqueous self-assembly behaviour alteration derived from primary structure changes of model peptides

    University essay from Lunds universitet/Kemiska institutionen

    Author : Marcus Bäcklund; [2020]
    Keywords : Model peptides; self-assembly; SAXS; FTIR; CD; physical chemistry; fysikalisk kemi; Chemistry;

    Abstract : Understanding of the self-assembly behaviour of peptides is of great interest within several different areas such as neurodegenerative diseases, biotechnology, and peptide pharmaceuticals. In this work we have compared the impact on the self-assembly behaviour derived from systematic changes of the primary structure of A8K, where A denotes alanine and K lysine. READ MORE

  4. 23. Generation of Model NiMo Hydrotreating Nano-catalyst via the Spark Discharge Technique

    University essay from Lunds universitet/Kemiteknik (CI)

    Author : Hatoon Makhool; [2020]
    Keywords : Model catalyst systems; hydrotreating catalysts; NiMo catalysts; Spark discharge technique; nanoparticles; chemical engineering; kemiteknik; Technology and Engineering;

    Abstract : Establishing a technically practical method to generate representative model catalysts for the use in characterizations and testing prior to catalyst implementation in chemical process units would allow for a more sophisticated understanding of the underlying catalytic mechanisms. As a step towards establishing such a method, generating non-agglomerated, spherical NiMo nanoparticles, with diameters below 25 nm and atomic composition of maximum 30 at% Ni with Mo (maximum 3:7 Ni:Mo atomic ratio), for application as model hydrotreating catalysts, was addressed. READ MORE

  5. 24. Effekten av PCB126 in vitro på tidig embryonalutveckling hos nötkreatur

    University essay from SLU/Dept. of Clinical Sciences

    Author : Erik Oscar Eriksson; [2020]
    Keywords : nötkreatur; bovin; embryoutveckling; in vitro; IVF; IVP; IVM; PCB; PCB 126; polyklorerade bifenyler;

    Abstract : Polyklorerade bifenyler (PCB) är industrikemikalier som började framställas i stora mängder under 1930-talet. Kommersiellt har PCB varit tillgängligt som komplexa kemiska blandningar i bland annat bekämpningsmedel, färg, plaster och olika elektriska komponenter. PCB är en grupp av över 200 dioxin- eller icke dioxinlika klorerade kolväten. READ MORE

  6. 25. Investigation of Governing Physics in a PEM Electrolyzer

    University essay from Lunds universitet/Kemiteknik (CI)

    Author : Kian Hajireza; [2020]
    Keywords : chemical engineering; electrochemistry; polymer-electrolyte membrane; electrolysis; hydrogen production; COMSOL; physics-based mode; multiphase transport; kemiteknik; Technology and Engineering;

    Abstract : Hydrogen gas is an energy source that has an energy density (per mass) that is three times as large than the energy density of natural gas. This qualifies hydrogen gas as a prime candidate for the fuel of tomorrow. One of the main research areas for hydrogen include the production of it as there are a vast amount of methods of hydrogen production. READ MORE