Sökning: "size characterisation"

Visar resultat 16 - 20 av 144 avhandlingar innehållade orden size characterisation.

  1. 16. ZnO Quantum Dots : Size Dependent Optical, Vibrational and Photoelectrochemical Properties

    Författare :Jesper Jacobsson; Tomas Edvinsson; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; ZnO; nanoparticels; quantum dots; Chemistry with specialization in Inorganic Chemistry; Kemi med inriktning mot oorganisk kemi;

    Sammanfattning : This thesis is devoted to quantum dots of ZnO in the size regime 2.5-10 nm.The focus is directed towards their size dependent properties with specialemphasis on the optical, vibrational and photocatalytic properties. The particleswere synthesized by hydrolysis in alkaline zinc acetate solution. LÄS MER

  3. 17. Characterisation of brain electrodes for ablative neurosurgery

    Författare :Ola Eriksson; Linköpings universitet; []
    Nyckelord :MEDICINE; MEDICIN;

    Sammanfattning : Stereotactic ablative neurosurgery with radio frequency current is regularly performed on patients with movement disorders, for instance Parkinson's disease. Even though the technique has been used for ablation in the brain for almost 50 years, nobody has suggested a standardised way of testing the electrodes used for ablative surgery. LÄS MER

  4. 18. Preparation of Pharmaceutical Powders using Supercritical Fluid Technology : Pharmaceutical Applications and Physicochemical Characterisation of Powders

    Författare :Sitaram Velaga; Johan Carlfors; Kristiina Järvinen; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Pharmaceutics; Supercritical fluid; Gas Anti-Solvent; SEDS; Crystallisation; Particle design; Polymorphs; Dry powder inhalation; Solid-state behaviour; Therapeutic proteins; Precipitation; Stability; Recombinant human growth hormone hGH ; Galenisk farmaci; Pharmaceutics; Galenisk farmaci;

    Sammanfattning : The main aim of the thesis was to explore the potential of supercritical fluid (SF) techniques in the field of drug delivery. In particular, the relatively recently developed solution-enhanced dispersion by supercritical fluids (SEDS) technology has been employed in the preparation of particles/powders. LÄS MER

  5. 19. Characterisation of airborne particles from rail traffic

    Författare :Saeed Abbasi; Ulf Sellgren; Ulf Olofsson; Mats Gustafsson; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; airborne; railway; brake; block; Other engineering mechanics; Övrig teknisk mekanik; SRA - Transport; SRA - Transport; Järnvägsgruppen - Effektiva tågsystem för godstrafik; Järnvägsgruppen - Effektiva tågsystem för godstrafik; Järnvägsgruppen - Effektiva tågsystem för persontrafik; Järnvägsgruppen - Effektiva tågsystem för persontrafik; Järnvägsgruppen - Tribologi; The KTH Railway Group - Tribology;

    Sammanfattning : Since the investigation of wear particles in rail transport started in late-1910s, the high mass concentration of these particles has raised worries among researchers concerned with air quality. However, effective action has yet to be taken because of lack of relevant knowledge. LÄS MER

  7. 20. Genome characterisation and mobility investigation in trypanosomes

    Författare :Carole Branche; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Trypanosoma brucei - Trypanosoma cruzi - karyotype - genome organisation -flageflum mobility - RNAi - functional studies.;

    Sammanfattning : Trypanosomes are uni-flagellated protozoa responsible for some of the most debilitating human infections such as Chagas disease (Trypanosoma cruzi) and sleeping sickness (Trypanosoma brucei). Unravelling their genome organisation and their biology would improve our basic knowledge and could contribute to find new drug target specific to the species. LÄS MER