Search for dissertations about: "tunnel"

Showing result 16 - 20 of 400 swedish dissertations containing the word tunnel.

  2. 16. Male moth behaviour and perception in pheromone plumes

    Author : Peter Valeur; Biologiska institutionen; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Djurekologi; Animal ecology; Grapholita molesta; Noctuidae; Lepidoptera; Tortricidae; behaviour; electrophysiology; single cell; flight tunnel; sex pheromone; wind tunnel; radar; flight; pre-exposure; mechanisms of mating disruption; Agrotis segetum; choice test;

    Abstract : Behaviour of male moths and electrophysiological responses of male pheromone-specific olfactory receptor neurones were studied in two model species, the oriental fruit moth Grapholita molesta and the turnip moth Agrotis segetum. The studies were aimed at elucidating the relative importance of different mating disruption mechanisms. READ MORE

  4. 17. Durability of fire exposed concrete : Experimental Studies Focusing on Sti„ffness & Transport Properties

    Author : Joakim Albrektsson; Johan Silfwerbrand; Lars Boström; Manouchehr Hassanzadeh; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Concrete; Fire; Polypropylene fibres; Durability; Tunnel; Damage assessment; Ultrasonic pulse velocity; Water absorption; Chloride migration; DIC; Byggvetenskap; Civil and Architectural Engineering;

    Abstract : Road and rail tunnels are important parts of the modern infrastructure. High strength concrete (HSC) is commonly used for tunnels and other civil engineering structures, since it allows high load carrying capacity and long service life. In general, Swedish road and rail tunnels should be designed for a service life of 120 years. READ MORE

  5. 18. Evaluation and modeling of the flow in a slotted wall wind tunnel

    Author : Emil Ljungskog; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; CFD Simulations; Ground Simulation; Uncertainty Quantification; Wind Tunnel; Tangential Blowing; Flow Uniformity; Slotted Walls;

    Abstract : As vehicle manufacturers strive to shorten the development time of new models, an increasing share of the aerodynamic development work is shifted from wind tunnel testing of prototype vehicles to numerical simulations of virtual models. However, comparing measurements from the wind tunnel with numerical simulation data is not straightforward due to several interference effects occurring between the wind tunnel and the tested vehicle. READ MORE

  6. 19. Scaling techniques using CFD and wind tunnel measurements for use in aircraft design

    Author : Karl Pettersson; Arthur Rizzi; Henrik Alfredsson; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; CFD; wind tunnel; scaling; Reynolds number effect; Vehicle engineering; Farkostteknik;

    Abstract : This thesis deals with the problems of scaling aerodynamic data from wind tunnel conditions to free flight. The main challenges when this scaling should be performed is how the model support, wall interference and the potentially lower Reynolds number in the wind tunnel should be corrected. READ MORE

  7. 20. Carpal Tunnel Syndrome and Diabetes. Surgical outcome and nerve pathology

    Author : Niels Thomsen; Malmö Institutionen för kliniska vetenskaper; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; intraepidermal nerve fibre; health-related quality of life; Carpal tunnel syndrome; diabetes mellitus; myelinated nerve fibre; nerve biopsy; nerve conduction study; skin biopsy.;

    Abstract : Carpal tunnel syndrome (CTS) is the most common entrapment neuropathy in the upper extremity. Diabetes mellitus increases the risk of developing CTS from an estimated prevalence of 2-4% in the general population to 15-30% in diabetics. READ MORE