Sökning: "Hui Xu"

Hittade 3 avhandlingar innehållade orden Hui Xu.

1. 1. Modulation of B cell access to antigen by passively administered antibodies : an explanation for antibody feedback regulation?

   Författare :Hui Xu; Birgitta Heyman; Helena Harris; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; IgG; IgG3; IgE; suppression; enhancement; epitope masking; antigen transport; antigen presentation; follicular B cells; marginal zone B cells; Immunologi; Immunology;

   Sammanfattning : Antibody responses can be up- or down-regulated by passive administration of specific antibody together with antigen. Depending on the structure of the antigen and the antibody isotype, responses can be completely suppressed or enhanced up to a 1000-fold of what is seen in animals immunized with antigen alone. LÄS MER

3. 2. Nanoindentation on coatings

   Författare :Zhi-Hui Xu; KTH; []
   Nyckelord :nanoindentation; Berkovich; thin coatings; deformation behaviour; mechanical properties; mechanism-based strain gradient theory; dislocations; cracks; pileup; indentation size effect; atomic force microscopy; diamond-like-carbon; alumina; gold; alumi;

   Sammanfattning : .... LÄS MER

4. 3. Mechanical Characterisation of Coatings and Composites-Depth-Sensing Indentation and Finite Element Modelling

   Författare :Zhi-Hui Xu; KTH; []
   Nyckelord :dept-sensing indentation; nanoindentation; finite element method; atomic force microscope;

   Sammanfattning : In the past two decades depth-sensing indentation has becomea widely used technique to measure the mechanical properties ofmaterials. This technique is particularly suitable for thecharacterisation of materials at sub-micro or nano scale thoughthere is a tendency to extend its application to the micro ormacro scale. LÄS MER