Sökning: "TEM transmission cells"

Visar resultat 11 - 15 av 29 avhandlingar innehållade orden TEM transmission cells.

  1. 11. Nano-particulate Silica Hydrogels Imaged in 2D and 3D using TEM: Effects of local pore structure on mass transport and applications in aggregation dynamics

    Författare :Charlotte Hamngren Blomqvist; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; silica gel; colloidal silica gel; interconnectivity; nanoporous; electron tomography; silica nanoparticle gel; mass transport; nanostructure; accessible volume fraction; 3D structure;

    Sammanfattning : Porous materials are frequently used in everyday applications including food science, pharmaceuticals, fuel cell membranes, batteries and solar cells. A key aspect in these porous materials is how their micro- and nano-structure affect the internal transport of for example water, particles or charges. The transport is a three-dimensional process. LÄS MER

  3. 12. Oxidative stress and proteolysis in the lens. Effects of anti-inflammatory drugs

    Författare :Anne Kling-Petersen; Göteborgs universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; oxidation NSAIDs ASA dexamethasone apoptosis GSH GSSG proteasome lens epithelial cells mouse lens cataract;

    Sammanfattning : Oxidative stress has been implied in formation of age-related cataract. The objectives of this thesis were to study redox regulation of proteolysis and oxidative/antioxidative effects of anti-inflammatory substances in human lens epithelial cells (HLEC) and intact mouse lenses. LÄS MER

  4. 13. Particulate airborne impurities : express analysis and health effects

    Författare :Kai Wilkinson; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : The cumulative effects of air pollutants are of principal concern in research on environmental protection in Sweden. Post-industrial society has imposed many limits on emitted air pollutants, yet the number of reports on the negative effects from them is increasing, largely due to human activity in the form of industrial emissions and increased traffic flows. LÄS MER

  5. 14. Electron tomography analysis of 3D order and interfacial structure in nano-precipitates

    Författare :Ling Xie; Klaus Leifer; Christian Kübel; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Electron tomography; nanoprecipitate; interfacial structure.; Materialvetenskap; Materials Science;

    Sammanfattning : Structural characterization is essential to understand the formation mechanisms of the nanostructures in thin absorber layers in third generation solar cells and amyloid protein aggregates. Since to the dimension of the precipitated structures is in nanometer scale, electron tomography technique in transmission electron microscopy (TEM) has been applied as a major tool to analyze the 3D order and distribution of precipitates using the electron tomography technique. LÄS MER

  7. 15. Correlative Chemical Imaging of Nanoscale Subcellular Structures

    Författare :Stefania Rabasco; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Chemical imaging can elucidate complex mechanisms, relationships, and components of biological samples. For example, it can reveal properties such as chemical composition, chemical structure, reactivity, and topography. Several imaging techniques exist, each providing different types of information. LÄS MER