Sökning: "stiffening"

Visar resultat 6 - 10 av 33 avhandlingar innehållade ordet stiffening.

  1. 6. Long-term cardiovascular follow-up after preterm birth

    Författare :Anna-Karin Edstedt Bonamy; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Cardiovascular disease is a leading cause of morbidity and mortality worldwide. A large number of studies show that the risk of cardiovascular disease is increased in people born with low birth weight. LÄS MER

  3. 7. Epidemiological, mechanistic and genetic aspects of vascular ageing and arterial stiffness in the population

    Författare :Mikael Gottsäter; Internmedicin - epidemiologi; []
    Nyckelord :Vascular ageing; Arterial stiffness;

    Sammanfattning : The core feature of vascular ageing is the age-associated stiffening of the large, elastic arteries, or arteriosclerosis. This results in a diminished volume-buffering function and is therefore central for the increase in systolic blood pressure and pulse pressure seen with advancing age. LÄS MER

  4. 8. Foam modeling including pore gas interaction for crashworthiness analysis

    Författare :Mats L Landervik; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Foams; Hyperelasto-viscoplasticity; Non-linear dynamics.; Staggered solution; Theory of Porous Media; Constitutive modeling;

    Sammanfattning : Foams are used in vehicles for three main functions: enhancing comfort, e.g.soft foams used in seats cushions, energy absorbtion, e.g. LÄS MER

  5. 9. Processing and properties of thermoplastic composites containing cellulose nanocrystals or wood-based cellulose fibres

    Författare :Lilian Forsgren; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Extrusion; Cellulose nanocrystals; Cellulose; Thermal stability; Tensile properties; Wood-based fibres; Injection moulding; Composite;

    Sammanfattning : Cellulose nanocrystals (CNC) were surface modified with dialkylamines to increase the compatibility between the CNC and the polymeric matrix, and promising results were obtained, with a 300 % stiffness increase when the mixed dispersion was compression moulded on a laboratory scale. The manufacturing process was up-scaled using water-assisted mixing in a twin-screw extruder (TSE) followed by a second compounding step and injection moulding (IM). LÄS MER

  7. 10. Getting to grips with cartons : Interactions of carbonboard packages with an artificial finger

    Författare :Daniel Eriksson; Christer Korin; Sören Östlund; Örebro universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Cartonboard packaging; Packaging mechanics; Packaging deformation; Manual handling;

    Sammanfattning : Packaging is an important part of most products in our modern world. It produces waste, but it also enables products to reach consumers safely and efficiently. Hence, the proper design of packaging is becoming increasingly important. Historically, cartonboard packages were designed for box compression strength. LÄS MER