Sökning: "contact lines"

Visar resultat 16 - 20 av 76 avhandlingar innehållade orden contact lines.

1. 16. Computational methods for microfluidics

   Författare :Ludvig af Klinteberg; Anna-Karin Tornberg; Peter Hansbo; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : This thesis is concerned with computational methods for fluid flows on the microscale, also known as microfluidics. This is motivated by current research in biological physics and miniaturization technology, where there is a need to understand complex flows involving microscale structures. Numerical simulations are an important tool for doing this. LÄS MER

3. 17. MgB2 hot-electron bolometer mixers for sub-mm wave astronomy

   Författare :Evgenii Novoselov; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; hot-electron bolometer; gain bandwidth; noise bandwidth; thin film; electron-phonon interaction; noise temperature; THz detector; conversion gain; mixer; magnesium diboride; superconductor;

   Sammanfattning : Spectroscopy and photometry in the terahertz (THz) range of remote space objects allows for a study of their chemical composition, because this range covers rotational lines from simple molecules and electron transition lines from atoms and ions. Due to high spectral resolution, THz heterodyne receivers al- low for studying dynamical properties of space objects manifested in doppler-shifted emission lines. LÄS MER

4. 18. Simulation of vertical dynamic interaction between railway vehicle and slab track

   Författare :Emil Aggestam; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; transition zones; genetic algorithm; dynamic vehicle–track interaction; Slab track; modelling; ballasteless track;

   Sammanfattning : The usage of slab track for high-speed railway lines has increased in recent decades. In Sweden, the building of new railway lines for higher speed and the selection of track design for such lines are currently being debated. LÄS MER

5. 19. Processing of TNF-receptors to soluble receptor forms in myeloid cells

   Författare :Flemming Björnberg; Avdelningen för hematologi och transfusionsmedicin; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; inflammation cytokine TNF receptor; extracellular fluids; Haematology; Hematologi; extracellulära vätskor;

   Sammanfattning : TNF (Tumor Necrosis Factor) is a pro-inflammatory cytokine which binds to two cell surface receptors, TNF-R55 and TNF-R75. The receptors undergo proteolytic cleavage and release a fragment (soluble TNF-receptors or TNF-Binding Protein), TNF-R55-BP and TNF-R75-BP. Soluble TNF-receptors are able to bind and inactivate TNF. LÄS MER

7. 20. The beneficial Effects of Neural Crest Stem Cells on Pancreatic      β–cells

   Författare :Anongnad Ngamjariyawat; Elena Kozlova; Leif Jansson; Jens Nielsen; Uppsala universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Neural Crest Stem Cells; Pancreatic Islets; β-cell proliferation; β-cell survival; Cadherin; Medical Science; Medicinsk vetenskap;

   Sammanfattning : Patients with type-1 diabetes lose their β-cells after autoimmune attack. Islet transplantation is a co-option for curing this disease, but survival of transplanted islets is poor. Thus, methods to enhance β-cell viability and function as well as methods to expand β-cell mass are required. LÄS MER