Search for dissertations about: "filling velocity"

Showing result 1 - 5 of 37 swedish dissertations containing the words filling velocity.

2. 1. Evaluation of Myocardial Function in Chronic Kidney Disease : A Colour Tissue Velocity Imaging Study

   Author : Shirley Hayashi; Lars-Åke Brodin; Svend Aakhus; KTH; []
   Keywords : Cardiac; Kidney; Tissue; Velocity; MEDICINE; MEDICIN;

   Abstract : In patients with chronic kidney disease (CKD), overhydration, uremic toxins and left ventricular (LV) dyssynchrony are factors that may lead to LV dysfunction and conduction abnormalities and thus contribute to the high cardiac mortality. Colour tissue velocity imaging (TVI) allows a detailed quantitative analysis of cardiac function in CKD patients, opening new possibilities to evaluate longitudinal myocardial motion, rapid isovolumetric events, LV filling pressure and LV synchronicity. READ MORE

4. 2. A study of flow fields during filling of a sampler

   Author : Zhi Zhang; Pär Jönsson; Dongyuan Sheng; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; physical modeling; flow pattern; vortex; filling; PIV; sampler; simulation; turbulence; Wilcox k-ω model; Materials science; Teknisk materialvetenskap; Metallurgical process engineering; Metallurgisk processteknik;

   Abstract : More and more attention has been paid to decreasing the number and size of non-metallic inclusions existing in the final products recently in steel industries. Therefore, more efforts have been made to monitor the inclusions' size distributions during the metallurgy process, especially at the secondary steelmaking period. READ MORE

5. 3. A Study of the Initial Mould Filling during Up-hill Ingot Casting

   Author : Line Hallgren; Pär Jönsson; Anders Tilliander; Seppo Louhenkilpi; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; swirling flow; up-hill teeming; nozzle; casting; fluid flow; modelling; CFD; LDA; swirl; ingot casting; filling; red eye;

   Abstract : The fluid flow in the mould during up-hill teeming is of great importance for the quality of the cast ingot and thereby the quality of the final steel products. At the early stage of the filling of an up-hill teeming mould, liquid steel flows with a high velocity from the runner into the mould. READ MORE

6. 4. An Experimental Study of Liquid Steel Sampling

   Author : Ola Ericsson; Pär Jönsson; Andrey Karasev; Malin Hallberg; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; liquid steel sampling; slag protection; filling velocity; solidification rate; sample homogeneity; Metallurgical process and manufacturing engineering; Metallurgisk process- och produktionsteknik;

   Abstract : Sampling of liquid steel to control the steel making process is very important in the steel industry. However, there are numerous types of disposable samplers and no united standard for sampling. The goal in this study is to investigate the effect of slag protection type and sample geometry on sampling parameters and sample homogeneity. READ MORE

7. 5. Diastolic left ventricular filling in 50-year-old male and female adults : Evaluation by Doppler echocardiography

   Author : Toomas Kangro; Uppsala universitet; []
   Keywords : Medical sciences; Arterial distensibility; diastole; Doppler echocardiography; exercise; healthy persons; hypertension; LV filling; menopause; medicin; vård; MEDICINE; MEDICIN; Clinical Physiology; Klinisk fysiologi;

   Abstract : Left ventricular (LV) diastolic filling abnormalities are seen in many patients with various cardiac disorders. Age is an important determinant of Doppler indices of LV diastolic filling. READ MORE