Sökning: "pressure distortion"
Visar resultat 16 - 19 av 19 avhandlingar innehållade orden pressure distortion.
16. Preparation, structure and properties of Hg, Tl-containing high-temperature superconductors
Sammanfattning : Powder samples with the general composition (Tl,Hg)2(Ba,Sr)2(Sr,Ca)Cu2O8-d, abbreviated 2212, were synthesised by solid-state reaction of metal oxides in closed silica ampoules. Depending on the relative amounts of Ba, Sr, and Ca, the superconducting transition temperature, Tc, varied significantly (45-100 K). LÄS MER
17. On Nonlinear Acoustics in Contrast Echocardiography
Sammanfattning : Ultrasound is one of the most commonly used noninvasive medical imaging techniques. Ultrasound contrast agents (UCA), consisting of encapsulated gas-filled microbubbles, have shown to increase the diagnostic precision in selected low echogenic patients. LÄS MER
18. Stability and transition on wind turbine blades
Sammanfattning : Transition on wind turbine blades is a highly complex phenomenon due to the myriad effects influencing the process. This thesis studies some of them, namely free-stream turbulence (FST), rotation, and three-dimensionality. The investigations employ large eddy simulations (LES) with and without (implicit or wall-resolved LES) a subgrid-scale model. LÄS MER
19. Pre-surgical hypnosis and suggestions in anesthesia
Sammanfattning : In a medical setting patients are often dependent, vulnerable and easily influenced by information, which may be interpreted in a way that creates anxiety and expectations of pain and complications. Information is often forgotten. Time can be experienced as very short or long, and there may be a feeling of unreality. LÄS MER