Essays about: "kemisk struktur"

Showing result 1 - 5 of 21 essays containing the words kemisk struktur.

  1. 1. Lignin Biorefining: Swelling and activation of fibers for lignin extraction

    University essay from KTH/Fiber- och polymerteknologi

    Author : Ali Al Husseinat; [2023]
    Keywords : Biorefining; Carboxymethylation; Extraction; Lignin; Swelling; Bioraffinering; Extraktion; Karboxymetylering; Lignin; Svällning;

    Abstract : I världens omvandling mot en bioekonomi kommer lignocellulosa material spela en stor roll i ersättningen av fossila resurser. Lignin är den mest tillgängliga källan av förnybara och naturligt förekommande aromatiska ämne och den utgör 15–30% av ved. READ MORE

  3. 2. Nanoscale characterisation of model Ni-Mo catalyst active phases

    University essay from Lunds universitet/Centrum för analys och syntes

    Author : Jonas Elmroth Nordlander; [2022]
    Keywords : Ni-Mo catalysts; Hydrodeoxygenation; TEM; PXRD; Materials chemistry; Chemistry;

    Abstract : An important stepping stone in transitioning from a fossil-fuel based transportation system is the production of bio-fuels such as bio-oils. For bio-oils to be commercially viable, catalytic upgrading via hydrodeoxygenation is required, typically using Ni-Mo oxide or sulfide catalysts. READ MORE

  4. 3. Synthesis of Graphene - Carbon Nanotube Hybrid Structures

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Aniruddha Paul; [2021]
    Keywords : Graphene; Carbon nanotubes; Graphene-CNT hybrid structures; Chemical Vapor Deposition CVD ; Grafen; Kolnanorör; Grafen-CNT-hybridstrukturer; Kemisk ångdeposition CVD ;

    Abstract : Graphene and Carbon nanotubes (CNTs) have been researched for more than a decade due to their extraordinary properties and advantages towards applications like electronics, structural re-enforcements, thermal management and energy storage. Graphene-CNT hybrid structures have been predicted to further enhance the exceptional properties and overcome some of the shortcomings of the individual materials. READ MORE

  5. 4. Sustaining Orientation of Ubiquitin for Single Particle Imaging Using Electric Fields

    University essay from Uppsala universitet/Kemisk och biomolekylär fysik; Uppsala universitet/Energimaterialens fysik

    Author : Adi Bijedic; [2021]
    Keywords : ;

    Abstract : Single-particle imaging, or SPI, is a method used to obtain the three-dimensional structure of particles. Repeatedly aiming X-rays at samples of a particle produces diffraction patterns, which are combined to a best-fit three-dimensional model of the particle. SPI of proteins can be improved by orienting the protein before imaging. READ MORE

  6. 5. Structural basis of modulation by pH and calcium in a ligand-gated ion channel

    University essay from KTH/Genteknologi

    Author : Olivia Andén; [2021]
    Keywords : Pentameric ligand-gated ion channels; bacterial homolog; protein expression; protein purification; cryo-electron microscopy; data processing; protein structure; Pentamerisk ligandstyrd jonkanal; bakteriell homolog; proteinexpression; proteinrening; kryo-elektronmikroskopi;

    Abstract : Pentameriska ligandstyrda jonkanaler (pLGICs) är avgörande för omvandlingen av kemisk till elektrisk signalöverföring i djurs nervsystem. Dysfunktion i dessa kanaler har visat sig vara kopplad till flera sjukdomar inklusive epilepsi, schizofreni, Alzheimers och autism, vilket gör dem till en måltavla för en mängd olika läkemedel. READ MORE