Search for dissertations about: "Amer"

Showing result 1 - 5 of 17 swedish dissertations containing the word Amer.

  2. 1. Pulsed laser ablation studied using digital holographic interferometry

    Author : Eynas Amer; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Experimental Mechanics; Experimentell mekanik;

    Abstract : Pulsed digital holographic interferometry has been used to investigate the plume and the shock wave generated in the ablation process of a Q-switched Nd-YAG (lambda= 1064 nm and pulse duration = 12 ns) laser pulse on a polycrystalline Boron Nitride (PCBN) target under atmospheric air pressure. A special set-up based on using two synchronised wavelengths from the same laser for simultaneous processing and measurement has been used. READ MORE

  4. 2. Pulsed laser ablation studied using digital holography

    Author : Eynas Amer; Bill O’Neill; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Experimental Mechanics; Experimentell mekanik;

    Abstract : Pulsed digital holographic interferometry has been used to study the plume and the shock wave generated in the laser ablation process on different targets under atmospheric air pressure. A pulsed Nd-YAG laser system (pulse duration 12 ns) has been used both for ablating the material (wavelength 1064 nm) and for measurement (wavelength 532 nm). READ MORE

  5. 3. Phase change with stress effects and flow

    Author : Amer Malik; Gustav Amberg; Long-Qing Chen; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Martensitic transformation; phase-field method; polycrystal; stress-effects; microactuator; finite-element simulations.;

    Abstract : In this thesis two kinds of phase change i.e., solid state phase transformation in steels and solid-to-liquid phase transformation in paraffin, have been modeled and numerically simulated. READ MORE

  6. 4. Hip fracture in young and old subjects : aspects on risk factors and outcome

    Author : Amer Al-Ani; Karolinska Institutet; Karolinska Institutet; []
    Keywords : ;

    Abstract : Hip fractures, the most serious osteoporosis-related fractures, mainly affect older people. The functional outcome for many hip fracture patients remains to be improved. Hip fractures in young patients are uncommon, but lifelong disability may prevail. READ MORE

  7. 5. Controlling substrate export by the Ysc-Yop type III secretion system in Yersinia

    Author : Ayad Amer; Matthew Francis; David L. Gally; Umeå universitet; []
    Keywords : Y. pseudotuberculosis; T3SS; YscX; YopD; assembly; translation control; temporal secretion.; mikrobiologi; Microbiology;

    Abstract : Several pathogenic Gram-negative bacteria invest in sophisticated type III secretion systems (T3SS) to incapacitate their eukaryotic hosts. T3SSs can secrete protein cargo outside the bacterial cell and also target many of them into the eukaryotic cell interior. READ MORE