Sökning: "PD classification"

Visar resultat 1 - 5 av 15 avhandlingar innehållade orden PD classification.

  1. 1. Partial Discharge Signatures of Defects in Insulation Systems Consisting of Oil and Oil-impregnated Paper

    Författare :Mohamad Ghaffarian Niasar; Hans Edin; Peter Werelius; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; partial discharge; transformer; oil; ageing; temperature; PD classification;

    Sammanfattning : Partial discharge measurement is a common method for monitoring and diagnostics of power transformers, and can detect insulation malfunctions before they lead to failure. Different parameters extracted from the measured PD activity can be correlated to the PD source, and as a result it is possible to identify the PD source by analyzing the PD activity. LÄS MER

  3. 2. Ca-Pd/Pt-Ge Compounds on the Zintl Border

    Författare :Isa Doverbratt; Centrum för analys och syntes; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Zintl compounds form a category in intermetallic chemistry somewhere between metallic and ionic compounds. Classical Zintl compounds form between electropositive and electronegative elements, such as the alkaline earth metals and the p-block elements, i.e. elements with a relatively large electronegativity difference. LÄS MER

  4. 3. Prognosis based classification and tumor biology of uterine sarcomas

    Författare :Elin Hardell; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Uterine stromal sarcomas are a heterogenous group of tumors ranging from low-grade stromal sarcomas with a relatively good survival but high risk of recurrence, to undifferentiated uterine sarcomas with a far worse prognosis. Little is known about their biology, and prognostic markers are lacking. LÄS MER

  5. 4. Fear of falling in persons with Parkinson's disease

    Författare :Stina Jonasson; Rehabiliteringsmedicin; []
    Nyckelord :Activity avoidance; Balance confidence; Concerns about falling; Fall-related self-efficacy; International Classification of Functioning; Disability and Health ICF ; Linking study; Psychometrics; Qualitative research; Regression analysis; Reliability; Self-reported rating scale;

    Sammanfattning : Fear of falling (FOF) is common in persons with Parkinson’s disease (PD) and may have large consequences in daily life, causing a sedentary lifestyle, social isolation and reduced quality of life. FOF is therefore an important aspect to consider for researchers as well as clinicians and the rehabilitation team. LÄS MER

  7. 5. First-principle data-driven models for assessment of motor disorders in Parkinson’s disease

    Författare :Taha Khan; Peter Funk; Mark Dougherty; Jerker Westin; Shahina Begum; Gunnar Klein; Mälardalens högskola; []
    Nyckelord :Computer Science; datavetenskap; Complex Systems – Microdata Analysis;

    Sammanfattning : Parkinson’s disease (PD) is an increasing neurological disorder in an aging society. The motor and non-motor symptoms of PD advance with the disease progression and occur in varying frequency and duration. In order to affirm the full extent of a patient’s condition, repeated assessments are necessary to adjust medical prescription. LÄS MER