Sökning: "V Lund"

Visar resultat 6 - 10 av 665 avhandlingar innehållade orden V Lund.

1. 6. Radiation tests of semiconductor detectors

   Författare :Valery Chmill; Bengt Lund-Jensen; Richar Brenner; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; radiation physics; materials science; Nuclear physics; Kärnfysik;

   Sammanfattning : This thesis investigates the response of Gallium Arsenide (GaAs) detectors to ionizing irradiation. Detectors based on π-υ junction formed by deep level centers doping. LÄS MER

3. 7. Semiconductor-ionic Materials for Low Temperature Solid Oxide Fuel Cells

   Författare :Muhammad Afzal; Andrew R. Martin; Peter Lund; Hab. Armelle Ringuede; KTH; []
   Nyckelord :Semiconductor-ionic materials; electrolyte-layer free fuel cell; low temperature solid oxide fuel cell; fuel to electricity conversion; Schottky junction; theoretical and experimental curves; Halvledar-joniska material; elektrolytskikt-fri bränslecell; lågtemperatur fastoxidbränslecell; bränsle till elomvandling; Schottky junction; teoretiska och experimentella kurvor; Energy Technology; Energiteknik;

   Sammanfattning : Solid oxide fuel cell (SOFC) is considered as an attractive candidate for energy conversion within the fuel cell (FC) family due to several advantages including environment friendly, use of non-noble materials and fuel flexibility. However, due to high working temperatures, conventional SOFC faces many challenges relating to high operational and capital costs besides the limited selection of the FC materials and their compatibility issues. LÄS MER

4. 8. Assessment of Pulmonary Blood Flow in Heart Failure. Using Novel and Non-Invasive Diagnostic Methods

   Författare :Mariam Al-Mashat; Lund Klinisk fysiologi; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; heart failure; magnetic resonance imaging; pulmonary congestion; pulmonary perfusion; tomographic lung scintigraphy; V P SPECT;

   Sammanfattning : In heart failure (HF), the heart is unable to pump effectively in order to satisfy the demands of the body. The elevated filling pressure seen in HF leads to accumulation of fluid in the lungs, i.e pulmonary congestion. While investigation with chest X-ray is recommended, it has limitations in detecting pulmonary congestion. LÄS MER

5. 9. Medical Laser-Induced Thermotherapy - Models and Applications

   Författare :Christian Sturesson; Lund Kirurgi; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; blood perfusion; mathematical modelling; liver tumours; Atomic and molecular physics; benign prostatic hyperplasia; Atom- och molekylärfysik; Fysicumarkivet A:1998:Sturesson; hyperthermia; Coagulation; tissue optical properties;

   Sammanfattning : Heat has long been utilised as a therapeutic tool in medicine. Laser-induced thermotherapy aims at achieving the local destruction of lesions, relying on the conversion of the light absorbed by the tissue into heat. In interstitial laser-induced thermotherapy, light is focused into thin optical fibres, which are placed deep into the tumour mass. LÄS MER

7. 10. Initiation of ventilation, surfactant treatment, and lung function after preterm birth

   Författare :Lars Björklund; Lund Pediatrik; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Respiration; Artificial; Pediatrics; Pediatri; Respiratory Function Tests; Pulmonary Surfactants; Newborn; Respiratory Distress Syndrome; Infant; Premature; Animals;

   Sammanfattning : The thesis investigates lung function and the effects of rescue surfactant treatment in mechanically ventilated preterm human infants with respiratory distress syndrome (RDS), and the effects of ventilation at birth on the response to surfactant supplementation in preterm lambs. To assess lung function, the author recorded static pressure-volume (P-V) curves during passive deflation from total lung capacity (TLC) to ambient pressure and measured end-expiratory lung volume (FRC) during mechanical ventilation by tracer gas washout. LÄS MER