Essays about: "poly"

Showing result 1 - 5 of 154 essays containing the word poly.

  1. 1. Development of polymer based composite filaments for 3D printing

    University essay from Uppsala universitet/Tillämpad materialvetenskap

    Author : Elin Åkerlund; [2019]
    Keywords : 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;

    Abstract : 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. READ MORE

  2. 2. A first look at some potentially plastic degrading enzymes

    University essay from Lunds universitet/Kemiska institutionen

    Author : Björn Pålsson; [2019]
    Keywords : PETase; PET; plastic degrading; enzyme; biotic degradation; plastic degrading organisms; biochemistry; biokemi; Biology and Life Sciences; Chemistry;

    Abstract : The many advantageous abilities of plastics have made them omnipresent in today’s society. However, the low cost of production, light weight, durability and insolubility in water combined with inadequate waste handling have led to a vast and increasing accumulation of plastics in nature, approximated to be over 6 300 million tons (Geyer, Jambeck and Law, 2017, ‘Production, use, and fate of all plastics ever made’, Science Advances, 3(7), pp. READ MORE

  3. 3. Microscopy techniques for studying polymer-polymer blends

    University essay from Umeå universitet/Institutionen för fysik

    Author : Sandra Mattsson; [2019]
    Keywords : CLEM; correlative light and electron microscopy; correlative microscopy; fluorescence microscopy; scanning electron microscopy; phase contrast microscopy; polymer blend; morphology; super yellow; PEO; poly ethylene oxide ; CLEM; korrelativ ljus- och elektronmikroskopi; korrelativ mikroskopi; fluorescensmikroskopi; svepelektronmikroskopi; faskontrastsmikroskopi; polymerblandning; morfologi; super yellow; PEO; poly etylenoxid ;

    Abstract : Semiconductors are used in many electronic applications, for example diodes, solar cells and transistors. Typically, semiconductors are inorganic materials, such as silicon and gallium arsenide, but lately more research and development has been devoted to organic semiconductors, for example semiconducting polymers. READ MORE

  4. 4. Polyandry and genetic diversity in populations of Pholidoptera griseoaptera along an environmental gradient

    University essay from SLU/Dept. of Ecology

    Author : Matilda Jutzeler; [2019]
    Keywords : polyandry; genetic diversity; multiple mating; microsatellites; nuptial gift; phenotype;

    Abstract : Polyandry is a common mating pattern in different insect species and it leads to increased genetic diversity in the offspring and prevents inbreeding in populations. According to the theory of mate choice, mates should choose a partner that will increase heterozygosity in their offspring. READ MORE

  5. 5. A comparison study of PV and battery technologies for EWB off-grid electrification projects in Sub-Saharan Africa

    University essay from KTH/Hållbar utveckling, miljövetenskap och teknik; KTH/Hållbar utveckling, miljövetenskap och teknik

    Author : Felix Vedin; Camilla Sandström; [2018]
    Keywords : PV; Photovoltaic; Solar cells; Solar panels; Batteries; Africa; Sub-Sahara; Mikronät; Comparison; Case study; Simulation; Manual; EWB; Engineers without borders; Solceller; Solpaneler; Batterier; Afrika; Sub-Sahara; Mikronät; Jämförelse; Simulation; Manual; Ingenjörer utan gränser;

    Abstract : Only 10 % of the rural population in Sub-Saharan Africa has access to electricity. At the same time the Sub-Saharan countries are close to the equator and get many sun hours a day, leading to a huge potential for solar energy. READ MORE