Sökning: "biodegradability"

Visar resultat 16 - 20 av 34 uppsatser innehållade ordet biodegradability.

1. 16. Measurements of resistivity in transformer insulation liquids

   Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Institutionen för elektroteknik

   Författare :Jonathan Hägerbrand; [2020]
   Nyckelord :transformer oil; resistivity; ions; ion drift model; HVDC; contact resistance;

   Sammanfattning : This thesis focuses on measuring techniques and results of resistivity in four commercially available insulating transformer oils: mineral oil, ester oil and two isoparaffin oils. Two measuring techniques, the industrially used diagnostic system for electrical insulation IDA and the Labview implemented Triangular Method, are used for resistivity measurements and the techniques are compared, a correction algorithm to the triangular method is suggested. LÄS MER

3. 17. The biodegradable straw - Investigating how enzymes can be used to enhance desired product qualities of drinking devices.

   Master-uppsats, Lunds universitet/Innovation

   Författare :Charlotte Parnefjord Gustafsson; Hanna Liang; [2020]
   Nyckelord :biodegradable; bioplastics; drinking devices; enzymes; fibre material; PHA; product design; statistical analysis; straws; Technology and Engineering;

   Sammanfattning : The increasing production of single-use plastics negatively affects the climate. The resulting plastic ocean debris has fatal consequences to marine life. As a result, the European Parliament has placed a ban on single-use plastics by 2021, making it essential to study sustainable materials for single-use products such as straws. LÄS MER

4. 18. Protein environment and structure in neat and hydrated deep eutectic solvents

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

   Författare :Jenny Xiang; Medina Basic; [2020]
   Nyckelord :Deep eutectic solvents; proteins; BSA; lysozyme; choline chloride:glycerol; choline chloride:urea; choline acetate:glycerol; UV-Vis; fluorescence; FT-IR; hydrated deep eutectic solvents; pharmaceutical technology; läkemedelsteknologi; Technology and Engineering;

   Sammanfattning : The use of deep eutectic solvents (DESs) has a great potential in the pharmaceutical field due to its many advantages such as biocompatibility, low toxicity and biodegradability. Studies have also shown that proteins can be successfully incorporated into DESs. LÄS MER

5. 19. The biodegradable straw - Investigating how enzymes can be used to enhance desired product qualities of drinking devices.

   Master-uppsats, Lunds universitet/Matematisk statistik

   Författare :Hanna Liang; Charlotte Parnefjord Gustafsson; [2020]
   Nyckelord :biodegradable; bioplastics; drinking devices; enzymes; fibre material; PHA; product design; statistical analysis; straws; Mathematics and Statistics;

   Sammanfattning : The increasing production of single-use plastics negatively affects the climate. The resulting plastic ocean debris has fatal consequences to marine life. As a result, the European Parliament has placed a ban on single-use plastics by 2021, making it essential to study sustainable materials for single-use products such as straws. LÄS MER

7. 20. Development of polymer based composite filaments for 3D printing

   Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Tillämpad materialvetenskap

   Författare :Elin Åkerlund; [2019]
   Nyckelord :3D-printing; fused deposition modeling FDM ; composite filaments; biocompatible materials; biodegradability; medical applications; scaffold materials; poly lactic acid PLA ; polycaprolactone PCL ; hydroxyapatite HA ; mechanical properties; thermal stability; chemical composition; morphological characterization; accelerated degradation study; polymer degradation behavior;

   Sammanfattning : The relatively new and still growing field of 3D-printing has opened up the possibilities to manufacture patient-specific medical devices with high geometrical accuracy in a precise and quick manner. Additionally, biocompatible materials are a demand for all medical applications while biodegradability is of importance when developing scaffolds for tissue growth for instance. LÄS MER