Sökning: "ethyl cellulose"

Visar resultat 1 - 5 av 11 uppsatser innehållade orden ethyl cellulose.

  1. 1. Inkjet printed piezoelectric energy harvesters based on self-assembly of diphenylalanine peptide

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Yujie Fu; [2023]
    Nyckelord :Inkjet printing; piezoelectric energy harvester; diphenylalanine peptide; self-assembly; Bläckstråleutskrift; piezoelektrisk energiskördare; difenylalaninpeptid; självmontering;

    Sammanfattning : Diphenylalanine peptide (Phe-Phe or FF) is a very promising bio-material in the future wearable electronics application due to its self-assembly into nanotubes and nanoribbons with high shear piezoelectric coefficient which is comparable to traditional inorganic piezoelectric materials. In order to efficiently harvest piezoelectric response, alignment and unidirectional polarization of FF nanotubes are required. LÄS MER

  3. 2. A GREENER SOLUTION Investigating the potential use of Green Solvents to remove cellulose nitrate lacquer from silver objects

    Kandidat-uppsats, Göteborgs universitet/Institutionen för kulturvård

    Författare :Borén Evelina; [2022-07-05]
    Nyckelord :Sustainable Conservation; Green Solvents; Cellulose Nitrate; Lacquer; Coating; Silver;

    Sammanfattning : This thesis investigates the performance of non-hazardous solvent substitutes, so called “Green Solvents", for the removal of aged and unaged cellulose nitrate lacquer from silver surfaces. Literature research and preliminary tests resulted in four solvents of interest: ethyl acetate, ethyl lactate, propylene carbonate and dimethyl carbonate. LÄS MER

  4. 3. The Use of Gels for the Removal of Cellulose Nitrate Lacquer on Silver

    Kandidat-uppsats, Göteborgs universitet/Institutionen för kulturvård

    Författare :Miri Katayon; [2022-07-05]
    Nyckelord :agar gel; metal conservation; nanomaterials; silver coating; sustainable conservation; varnish removal;

    Sammanfattning : The conservation of silver objects mainly constitutes addressing the issues of tarnish removal and of preventing tarnish. For decades lacquer has been used to coat silver objects in order to protect them from tarnishing. LÄS MER

  5. 4. Encapsulation of probiotic bacteria in an oleogel

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

    Författare :Philip Bergsell; [2022]
    Nyckelord :probiotics; oleogel; encapsulation; ethyl cellulose; food technology; Technology and Engineering;

    Sammanfattning : Probiotic bacteria administered orally that aim to reach the intestine alive need protection to be able to survive the human gastrointestinal tract. Ethyl cellulose is one food-grade material that can be used with oil to form an oleogel. This oleogel can encapsulate probiotics and provide physical protection. LÄS MER

  7. 5. Convolutional neural networks for semantic segmentation of FIB-SEM volumetric image data

    Master-uppsats, Göteborgs universitet/Institutionen för matematiska vetenskaper

    Författare :Fredrik Skärberg; [2020-11-26]
    Nyckelord :Deep learning; convolutional neural networks; image analysis; semantic segmentation; focused ion beam scanning electron microscopy; porous materials; controlled drug release;

    Sammanfattning : Focused ion beam scanning electron microscopy (FIB-SEM) is a well-established microscopy technique for 3D imaging of porous materials. We investigate three porous samples of ethyl cellulose microporous films made from ethyl cellulose and hydroxypropyl cellulose (EC/HPC) polymer blends. LÄS MER