Search for dissertations about: "GICs"

Showing result 1 - 5 of 7 swedish dissertations containing the word GICs.

  1. 1. Electromagnetic Modelling of Power Transformers for Study and Mitigation of Effects of GICs

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Seyedali Mousavi; KTH.; [2015]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; transformer; hysteresis; DC magnetization; GMD; GICs; FEM; reluctance network method; low frequency transients; core losses; winding losses; eddy current losses; transformator; hysteresis; DC; likströmsmagnetisering; GMD; GIC; FEM; reluktansnätverksmodell; lågfrekventa transienter; kärnförluster; lindningsförluster; virvelströmsförluster; Electrical Engineering; Elektro- och systemteknik;

    Abstract : Geomagnetic disturbances that result from solar activities can affect technological systems such as power networks. They may cause DC currents in power networks and saturation of the core in power transformers that leads to destruction in the transformer performance. READ MORE

  2. 2. Electromagnetic Modelling of Power Transformers with DC Magnetization

    University dissertation from Stockholm : KTH Royal Institute of Technology

    Author : Seyed Ali Mousavi; KTH.; [2012]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Transformer; Hysteresis; DC magnetization; GICs; FEM; reluctance network method;

    Abstract : DC currents that flow through the ground can be injected to the star windings of power transformers from their grounded neutral points and close their path with transmission lines. The geomagnetically induced currents (GICs) and AC/DC convertors of high voltage direct current (HVDC) systems are the sources of such DC currents. READ MORE

  3. 3. Identification of compounds that target glioma initiating cells

    University dissertation from Stockholm : Karolinska Institutet, Dept of Physiology and Pharmacology

    Author : Shimei Wee; Karolinska Institutet.; Karolinska Institutet.; [2015]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES;

    Abstract : Glioblastoma multiforme is a common form of brain tumor that leads to debilitating effects despite the current regiment of treatment, which includes surgery, chemotherapy and radiotherapy. With the discovery of glioma-initiating cells (GICs) that exists within the bulk tumor, some light has been shed on this disease. READ MORE

  4. 4. Interplay Between Cell of Origin and Oncogenic Activation in Glioma

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Yiwen Jiang; Uppsala universitet.; [2012]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Glioma; PDGF; cell of origin; Sox5; glioma initiating cells; Oncology; Onkologi;

    Abstract : Glioma is the most frequent primary tumor of the central nervous system. By using the RCAS/tv-a mouse glioma model, we have studied mechanisms controlling glioma development and the effect of cell of origin on these processes.SOX5 was identified as a brain tumor locus in a retroviral insertional mutagenesis screen of PDGF-B induced mouse gliomas. READ MORE

  5. 5. Investigations of Proneural Glioblastoma to Identify Novel Therapeutic Targets

    University dissertation from Uppsala : Acta Universitatis Upsliensis

    Author : Maria Boije; Uppsala universitet.; [2011]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Glioma; proneural subtype; hallmarks; glioma initiating cells; S-SOX5; angiogenesis; stromal cells; MEDICINE Morphology; cell biology; pathology Morphology Tumour biology; MEDICIN Morfologi; cellbiologi; patologi Morfologi Tumörbiologi; Experimentell patologi; Experimental Pathology;

    Abstract : Malignant glioma is a highly lethal and destructive disease with no proper cure. We have investigated some of the hallmarks of cancer in connection to glioma and found ways to disrupt these and prevent tumor growth. The work is done within the context of a glioma subtype distinguished by activation of PDGF signaling termed the proneural subtype. READ MORE