Search for dissertations about: "image currents"

Showing result 1 - 5 of 68 swedish dissertations containing the words image currents.

  2. 1. Engagement, directed motivational currents, and second language learning : adult immigrant perspectives

    Author : Manar Halwani; Kirk P. H. Sullivan; Eva Lindgren; Marte Monsen; Umeå universitet; []
    Keywords : HUMANITIES; HUMANIORA; HUMANIORA; HUMANITIES; Second language learning; motivation; engagement; directed motivational currents DMCs ; engagement with language EWL ; adult learners; immigrant; refugee; professionals; language teaching and learning; språkdidaktik;

    Abstract : The dissertation answers calls for the integration of motivation and engagement theory and research among highly educated adult-migrant language learners. Specifically, the purpose of this dissertation is to propose a model to describe the interactions between the motivation constructDirected Motivational Currents (DMCs) and the engagement construct Engagement with language (EWL). READ MORE

  4. 2. Insulin promotes GABA signalling modulation in both the mouse hippocampus and human CD4+ T cells

    Author : Hayma Hammoud; Bryndis Birnir; Fredrik Elinder; Uppsala universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Gamma-aminobutyric acid; hippocampus; tonic currents; CD4 T cells; glucose; insulin; cytokines; proliferation.; Medical Cell Biology; Medicinsk cellbiologi;

    Abstract : Gamma-aminobutyric acid (GABA) is the most common inhibitory neurotransmitter in the adult mammalian brain, where it mediates several biological functions. Rapid inhibition is predominantly mediated by the activation of GABA-A receptors that are ubiquitously expressed across the central nervous system in a cell-, circuit-, or region-specific manner. READ MORE

  5. 3. Resource characterization and variability studies for marine current power

    Author : Nicole Carpman; Karin Thomas; Mats Leijon; Sandra Eriksson; AbuBakr S. Bahaj; Uppsala universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Marine current energy; tidal currents; wake; variability; renewable energy; ADCP; flow measurement; Engineering Science with specialization in Science of Electricity; Teknisk fysik med inriktning mot elektricitetslära;

    Abstract : Producing electricity from marine renewable resources is a research area that develops continuously. The field of tidal energy is on the edge to progress from the prototype stage to the commercial stage. READ MORE

  6. 4. Run-Up Transient Analysis for Salient Pole Wound Field Synchronous Motors : Field winding and power electronics implications for a smoother and cooler asynchronous start

    Author : Roberto Felicetti; Urban Lundin; Andreas Binder; Uppsala universitet; []
    Keywords : apparent resistance; cable modeling; current control; transmission line model; eddy currents; field winding; frequency analysis response; Fourier Transform; impedance mismatch; main inductance; overvoltage; parasitic capacitance; partial discharge; quality factor; ringing; slew rate; stray inductance; voltage gradient; winding resonance frequency; asynchronous start; run-up; torque ripple; reluctance torque; Engineering Science with specialization in Science of Electricity; Teknisk fysik med inriktning mot elektricitetslära;

    Abstract : Salient Pole Wound Field Synchronous Machines have better efficiency at full load than asynchronous machines of the same capability. Moreover, where asynchronous machines need inherently to draw a magnetizing current from the grid, Salient Pole Wound Field Synchronous Machines can work efficiently at unity power factor. READ MORE

  7. 5. Magnetic Leakage Fields and End Region Eddy Current Power Losses in Synchronous Generators

    Author : Birger Marcusson; Urban Lundin; Göran Engdahl; Uppsala universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; magnetic leakage fields; leakage flux; eddy currents; losses; synchronous generator; Engineering Science with specialization in Science of Electricity; Teknisk fysik med inriktning mot elektricitetslära;

    Abstract : The conversion of mechanical energy to electrical energy is done mainly with synchronous generators. They are used in hydropower generators and nuclear plants that presently account for about 80% of the electric energy production in Sweden. READ MORE