Sökning: "Ultrasonication"
Visar resultat 1 - 5 av 8 uppsatser innehållade ordet Ultrasonication.
1. Qualitative Analysis of Chlorinated Paraffins in Recycled Plastics
Kandidat-uppsats, Örebro universitet/Institutionen för naturvetenskap och teknikSammanfattning : Described in many studies as dangerous for the environment and potentially carcinogenic for humans, Chlorinated Paraffins (CPs) are easily widespread due to their substantial production and use in different products. Previous studies reported the presence of CPs in different plastic polymers. LÄS MER
2. Incorporation of Plasticizers through Refining into Wood Pulp : A Potential Route For Bio-based Thermoplastic Materials
Kandidat-uppsats, KTH/MaterialvetenskapSammanfattning : Fibers are interesting materials alternative to replace conventional fossil-based plastics, as they are bio-based and do not lead to CO2 emissions. Due to their limited ductility, it is difficult to use them to make complex three-dimensional shapes. LÄS MER
3. Ultrasonication of Spiral Wound Membranes to Mitigate Fouling in Reverse Osmosis
Master-uppsats, KTH/KemiteknikSammanfattning : Syftet med den här studien var att undersöka en alternativ slamningsreducerande teknik till spolning, som effektivt kan ta bort biologisk påväxt. Ultraljud undersöktes som en möjlig metod för att ta bort igenslamningen från omvänd osmos med ett spirallindat membran. LÄS MER
4. Comparing different methods of measuring particle size for pharmaceutical excipients
Master-uppsats, Lunds universitet/Livsmedelsteknik och nutrition (master)Sammanfattning : In pharmaceutical science, particle size is one of the most fundamental parameters of materials, but different particle-sizing analysis methods lack a uniform standard for measuring irregular particle size, making it difficult to compare the accuracy and applicability of different particle-sizing analysis methods. Experiments on excipients used in pharmaceuticals are carried out in this paper by laser diffraction analysis (Malvern wet and dry), dynamic image analysis (Qicpic), and microscopic methods (Qicpic, SEM, and light microscopy) to determine the applicability and limitations of each method, as well as to clarify their advantages and disadvantages. LÄS MER
5. Study of the preparation of a stable foam
Master-uppsats, Lunds universitet/Livsmedelsteknik och nutrition (master)Sammanfattning : On a daily basis, abdominal examinations with x-ray imaging are run at hospitals for diagnosis of abdominal diseases. To enable doctors to visualize organs and tissues on an x-ray image with colors based on the radiodensity, the patient needs to drink an oral contrast that fills up the digestive system. LÄS MER