Sökning: "rheology"

Visar resultat 6 - 10 av 201 avhandlingar innehållade ordet rheology.

  1. 6. Nonlinear rheological characterization of cellulose nanocrystals based systems

    Författare :Sylwia Wojno; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; cellulose; rheo-PLI; CNC; FT-rheology; rheology;

    Sammanfattning : In this thesis, cellulose nanocrystals based systems were investigated using advanced rheological characterization techniques, with a particular focus on nonlinear material response functions and Rheo-PLI (Polarized Light Imaging). Cellulose nanocrystals (CNCs) show enormous potential for many applications, either as material on its own or as renewable reinforcement in polymers. LÄS MER

  3. 7. Blood Flow variations in Large Arteries due to non-Newtonian rheology

    Författare :Stevin van Wyk; Laszlo Fuchs; Staffan Lundström; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Blood; Rheology; Viscosity; non-Newtonian; CFD; Bifurcations; Unsteadiness; Wall Shear Stress; Atherosclerosis;

    Sammanfattning : The blood is a complex fluid that contains, in addition to water, cells, macro-molecules and a large number of smaller molecules. The physical properties of the blood are therefore the result of non-linear interactions of its constituents, which are influenced by the local flow field conditions. LÄS MER

  4. 8. Exploring the role of rheology in bolus flow using an in-vitro approach

    Författare :Muhammad Waqas; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; extensional rheology; ultrasound viscometery; Bolus rheology; in vivo analysis; in vitro manometry; In-vitro simulations; degluitition; microstructure analysis; thickened fluids; Dysphagia;

    Sammanfattning : Swallowing disorders, termed ‘dysphagia’, are more common in the elderly but can also affect younger persons. Approximately, 8% of the world’s population suffers from dysphagia. A Texture Modified Diet (TMD), which increases bolus viscosity to adjust for the sluggish bolus handling mechanism, is the most common intervention. LÄS MER

  5. 9. Rheology of Wheat Flour Doughs at Large Deformations and the Relation to Baking Quality and Physical Structure

    Författare :Katarina Wikström; Malmö Experimentell patologi; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Food and drink technology; mixograph; multivariate analysis; stress relaxation; uniaxial flow; biaxial flow; baking quality; extensional flow; enzymes; Dough; rheology; Livsmedelsteknik;

    Sammanfattning : The effects on dough rheology at large deformations in elongational flow and shear flow have been studied. The results are related to bread making quality in terms of bread volume and to the physical structure of the dough. A new method for evaluation of an instrumented mixograph is reported. LÄS MER

  7. 10. Assessment of blood rheology : methodology and studies in healthy individuals, in patients with certain diseases and during liquid blood preservation

    Författare :Bo Sandhagen; Uppsala universitet; []
    Nyckelord :MEDICINE; MEDICIN;

    Sammanfattning : .... LÄS MER