Sökning: "pulse pressure"

Visar resultat 16 - 20 av 152 avhandlingar innehållade orden pulse pressure.

  1. 16. Numerical prediction of propeller induced hull pressure pulses and noise

    Författare :Muye Ge; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; RANS; Transition; IDDES; Cavitation; Pressure pulses; Sheet cavitation inception; Ship noise; k − ω SST; FWH acoustic analogy; Hydroacoustics;

    Sammanfattning : An operating marine propeller is one of the major sources inducing hull pressure pulses, onboard noise and vibration as well as underwater radiated noise. There are rising concerns of environmental impacts and comfort and welfare of passengers and crews due to these negative effects. LÄS MER

  3. 17. Modelling of the pressure distributions in twin-wire blade formers

    Författare :Claes Holmqvist; KTH; []
    Nyckelord :fluid mechanics; blade forming; pressure distribution; suction; interaction; permeable fabric; modules;

    Sammanfattning : During papermaking, the internal structure of the fibrenetwork constituting the paper is to a dominating extentdetermined in the forming zone of the paper machine. Thisthesis is aimed at studying the pressure distribution in bladeforming sections, which is commonly considered to be a keyquantity of the process. LÄS MER

  4. 18. Vitamin D and blood pressure

    Författare :Ann Burgaz; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : The physiological function of circulating 25-hydroxyvitamin D (25(OH)D) is to maintain serum calcium range that supports skeletal system. Evidence is mounting that vitamin D has beneficial effects on other important functions in tissues not primarily related to mineral metabolism. LÄS MER

  5. 19. Blood pressure in atrial fibrillation

    Författare :Joakim Olbers; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Introduction: Hypertension is a leading risk factor for cardiovascular morbidity and premature death. Prevalence of hypertension in the adult population in Sweden has been estimated to 27%. Atrial fibrillation (AF) is the most prevalent sustained arrhythmia of clinical relevance with an estimated prevalence of at least 2.9% among adults in Sweden. LÄS MER

  7. 20. Relationship between kidney function and cognitive function in the general older population. Results from the general population study “Good Aging in Skåne”

    Författare :Tomas Månsson; Geriatrik; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; kidney function; glomerular filtration rate; cognition; cerebral small vessel disease; pulse pressure; elder; epidemiology;

    Sammanfattning : .... LÄS MER