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Hittade 5 avhandlingar som matchar ovanstående sökkriterier.

1. 1. Non-invasive assessment of dynamic properties in human arteries : with special reference to gestation and diabetes

   Författare :Jie Hu; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :Acetylcholine; Adolescents; Aorta; Diameter waveforms; Diameter pulse waves; Echo tracking system; Fetal behavioural state; Fetal breathing movements; Gestational diabetes mellitus; Impending birth; Insulin-dependent diabetes mellitus; Laser Doppler; Microcirculation; Pregnancy; Pulse wave velocity; Vascular endothelium; Vascular stiffness; Ultrasound;

   Sammanfattning : Background: The important role played by the intrinsic properties of central arteries in cardiovascular physiology and pathology has been increasingly recognised. Several circulatory disorders are associated with increased arterial stiffness. LÄS MER

3. 2. A Permanent Magnet Traction Motor for Electric Forklifts : Design and Iron Loss Analysis with Experimental Verifications

   Författare :Yung-Kang Robert Chin; Chandur Sadarangani; Fabio Crescimbini; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electrical engineering; Elektroteknik;

   Sammanfattning : This thesis presents the design analysis of a permanent magnet synchronous motor (PMSM) for the traction application in electric forklifts. Within the scope of the study, an existing induction traction motor for electric forklifts benchmarks the expected performances of the proposed PMSM designs, as design specifications. LÄS MER

4. 3. Development and evaluation of non-invasive ultrasonic methods for arterial characterization

   Författare :Anders Eriksson; Avdelningen för Biomedicinsk teknik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Instrumentation technology; TDI; Tissue Doppler imaging; Arterial characterization; Non-invasive; Flow generation; PWV; Pulse wave velocity; Mät- och instrumenteringsteknik; Ultrasound; Vascular impedance;

   Sammanfattning : As cardiovascular diseases have been the most common cause of mortality in the western world for decades, the demand for appropriate diagnostic methods is obvious. To facilitate the examination non-invasive methods are preferable since they do not require sensors within the circulation system. LÄS MER

5. 4. Hemodynamics, echocardiography, and biomarkers in different heart failure phenotypes

   Författare :Emil Najjar; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :;

   Sammanfattning : Background. Heart failure (HF) is a major health problem affecting millions of patients worldwide and is associated with impaired quality of life and poor prognosis. Different approaches including invasive and non-invasive methods can be used to provide information about the cardiac performance in HF patients. LÄS MER

7. 5. Identification of single motor units in ultrafast ultrasound image sequences of voluntary skeletal muscle contractions

   Författare :Robin Rohlén; Christer Grönlund; Jun Yu; Dario Farina; Umeå universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; ultrafast ultrasound; motor units; decomposition; skeletal muscle; voluntary contractions; electromyography; twitch; imaging;

   Sammanfattning : The central nervous system controls human force production by successive recruitment of motor units in the skeletal muscles and changing their neural firing rate. The motor unit comprises a motoneuron, its innervated muscle fibers, and its axons. LÄS MER