Essays about: "Pulse wave velocity"

Found 5 essays containing the words Pulse wave velocity.

  1. 1. Comparison of control strategies for Peltonturbines in Wave Energy Converters

    University essay from KTH/Skolan för industriell teknik och management (ITM)

    Author : PHILIP HAMILTON; ANDREAS SJÖGREN; [2021]
    Keywords : Permanent Magnet Synchronous Generator; Synchronous Motor; Wave Energy Converter; Pelton Turbine; Velocity Control Strategies; Dead-time Strategies; Cascaded Control; Permanentmagnetgenerator; Synkrongenerator; Synkronmotor; Vågenergiomvandlare; Peltonturbin; Hastighetskontrollstrategier; Mellantidsstrategier; Kaskadreglering;

    Abstract : Wave energy is a promising renewable resource with a higher energy density than both wind and solar. Waves can travel thousands of kilometers with minimal energy loss, making them more reliable than the previously mentioned alternatives. A device that utilizes wave energy to generate electricity is calleda Wave Energy Converter. READ MORE

  3. 2. Acoustic Characterization of the Cellulose-coated Perfluorocarbon Droplets based on Phase Velocity Measurements

    University essay from KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

    Author : Emma Lindroth; [2020]
    Keywords : Ultrasound; Droplets; Contrast agent; Cellulose; Perfluorocarbon; Acoustic characterization; Non-destructive evaluation; Phase velocity; Bulk modulus; Compressibility;

    Abstract : Today, microbubbles are one of the most commonly used ultrasound contrast agents, since their high compressibility results in a strongly scattered signal. Despite this advantage, microbubbles experience limitations by the decreased stability and large diameter. READ MORE

  4. 3. Non-invasive ultrasound measurements of vascular impedance

    University essay from Lunds universitet/Avdelningen för Biomedicinsk teknik

    Author : Roger Larsson; [2018]
    Keywords : Ultrasound; ultrafast ultrasound imaging; vascular impedance; pulse wave velocity; motion tracking; Technology and Engineering;

    Abstract : Despite its introduction in the early 1950´s, vascular impedance has yet to be applied in clinical use to predict early stages of cardiovascular disease (CVD). It is defined as the ratio between blood pressure and flow and describes the opposition to blood flow within the cardiovascular system. READ MORE

  5. 4. Assessment of Pulse Wave Velocity in the Aorta by using 4D Flow MRI

    University essay from Linköpings universitet/Institutionen för medicinsk teknik; Linköpings universitet/Tekniska högskolan

    Author : Mattias Perkiö; [2014]
    Keywords : Pulse wave velocity; aorta; magnetic resonance imaging; phase contrast; 4D flow MRI;

    Abstract : The purpose of this master thesis was to evaluate the estimation of pulse wave velocity (PWV) in the aorta using 4D flow MRI. PWV is the velocity of the pressure wave generated by the heart during systole and is a marker of arterial stiffness and a predictor of cardiovascular disease (CVD). READ MORE

  6. 5. Investigation of the Frisch-grid inefficiency by means of wave-form digitization

    University essay from Örebro universitet/Institutionen för naturvetenskap

    Author : Alf Göök; [2008]
    Keywords : Nuclear Physics; Subatomic Physics; subatomär fysik;

    Abstract : Frisch grid ionization chambers are commonly used experimental tools for charged particle spectroscopy. In the ideal Frisch grid chamber the anode pulse height is independent of where inside the sensitive volume the charge has been created. This ideal cannot be realized because of imperfect shielding of the anode by the grid. READ MORE