Sökning: "stress concentration"

Visar resultat 21 - 25 av 332 avhandlingar innehållade orden stress concentration.

  1. 21. Behaviour and design of adhesive joints in flexural steel members bonded with FRP laminates

    Författare :Reza Haghani Dogaheh; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Laminate; Adhesive joint; Stress concentration; FRP; Design; Optic measurement; Fillet; Tapering;

    Sammanfattning : The use of bonded CFRP laminates to strengthen and upgrade existing structures has attracted a great deal of attention during the past two decades. The superior mechanical properties of CFRP laminates, such as high strength and stiffness, excellent fatigue properties and good durability characteristics, have made them a suitable alternative to steel plates used in traditional strengthening and repair methods. LÄS MER

  3. 22. Astrocytic communication and cell death during metabolic depression and oxidative stress

    Författare :Christina Nodin; Göteborgs universitet; []
    Nyckelord :astrocyte; gap junction; ATP; ROS; oxidative stress; Annexin V; AIF; programmed cell death; Nrf2; scavenger; iodoacetate; SIN-1;

    Sammanfattning : Stroke is a major cause of death and adult disability in the western world. Most often, stroke is caused by the occlusion of a brain artery. Within the perfusion territory of the occluded vessel, various degrees of necrotic and delayed programmed cell death will occur if the occlusion persists, leading to expanding tissue damage. LÄS MER

  4. 23. Stress Effects on Solute Transport in Fractured rocks

    Författare :Zhihong Zhao; Lanru Jing; Ivars Neretnieks; Auli Niemi; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fractured rocks; Solute transport; Stress effects; Coupled stress-flow-transport processes; Analytical solution; Particle mechanics model; Fracture surface damage; Discrete element method; Particle tracking method;

    Sammanfattning : The effect of in-situ or redistributed stress on solute transport in fractured rocks is one of the major concerns for many subsurface engineering problems. However, it remains poorly understood due to the difficulties in experiments and numerical modeling. LÄS MER

  5. 24. From single-molecule sensing to extracellular vesicles in glioma cells under stress

    Författare :Virginia Claudio; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; proteome; single molecule sensing; nanoplasmonics; surface plasmon resonance; exosomes; glioblastoma; extracellular vesicles; cellular stress; lipid composition;

    Sammanfattning : This thesis describes the work I conducted in two different areas, namely biomolecular sensing and quantitative cell biology. The work in the former area was focused on the optimization of plasmonic metamaterials for sensing applications, and in the latter on the characterization of extracellular vesicles released by glioblastoma cells under stress conditions. LÄS MER

  7. 25. Measurement and Evaluation of Antioxidant Status and Relation to Oxidative Stress in Humans

    Författare :Cecilia Nälsén; Bengt Vessby; Margareta Öhrvall; Lars Ove Dragsted; Uppsala universitet; []
    Nyckelord :Nutrition; antioxidant; antioxidant status; antioxidant capacity; oxidative stress; lipid peroxidation; F2-isoprostanes; dietary factors; vitamin E; n-3 fatty acids; human; Näringslära;

    Sammanfattning : Numerous diseases are associated with reduced antioxidant defence and oxidative stress. The antioxidant defence includes dietary and endogenous antioxidants and involves complex interactions between them. LÄS MER