Sökning: "temporal intensity contrast"
Visar resultat 1 - 5 av 13 avhandlingar innehållade orden temporal intensity contrast.
1. Polymer-shelled Ultrasound Contrast Agents : Characterization and Application
Sammanfattning : Ultrasound-based imaging technique is probably the most used approach for rapid investigationand monitoring of anatomical and physiological conditions of internal organs and tissues.Ultrasound-based techniques do not require the use of ionizing radiation making the tests anexceptionally safe and painless. LÄS MER
2. A sub-5 fs 100 TW optical parametric synthesizer
Sammanfattning : State-of-the-art ultrashort light sources in the visible and near-infrared spectral regions provide direct access to the femtosecond realm, thereby enabling understanding and control of electronic processes within matter. On the other hand, ultra-intense light pulses lead to the emergence of relativistic electron motion and many related phenomena, such as electron & ion acceleration and high-order harmonic generation in plasmas. LÄS MER
3. Temporal Modulation in Fluorescence Spectroscopy and Imaging for Biological Applications
Sammanfattning : This thesis explores the benefits of intensity modulation for the purpose of extending the range of applications of fluorescence spectroscopy and imaging in cellular and molecular biology and medicine. Long-lived transient states of fluorescent molecules can, because of their long lifetimes, be used to detect subtle changes in the microenvironment of the molecule. LÄS MER
4. Supra-threshold hearing loss and wide dynamic range compression
Sammanfattning : Cochlear hearing loss leads to deficits in many perceptual aspects, including threshold elevation (loss of sensitivity), reduction of auditory dynamic range (loudness recruitment) and problems with resolving sounds (loss of supra-threshold hearing). An ongoing debate is whether assessment of the individual supra-threshold hearing provides information which is likely to have an important influence on clinical decisions on signal processing strategies. LÄS MER
5. The role of exercise and exercise-related factors in the control of mitochondrial oxidative function
Sammanfattning : The effects of exercise and exercise-related factors on the control of mitochondrial oxidative function were investigated in human and rat skeletal muscle. Oxidative function was assessed through the measurement of oxygen consumption in chemically permeabilized (skinned) fibers. LÄS MER