Sökning: "non-thermal biological effects"
Hittade 5 avhandlingar innehållade orden non-thermal biological effects.
1. Radio Frequency Systems for NMR Imaging: Coil Development and Studies of Non-Thermal Biological Effects
Sammanfattning : This thesis concerns both design and optimization of NMR imaging systems and studies on non-thermal biological effects of electromagnetic fields. These two research fields are linked together by the fact that humans are subject to static and pulsed magnetic fields as well as to magnetic radio frequency fields (RF) during an NMR imaging investigation. LÄS MER
2. Pulsed Electric Field Food Treatment and Low Frequency Bioelectromagnetics
Sammanfattning : This thesis is divided in two parts, both of which address the interaction between biological cells (especially cell membranes) and electromagnetic fields. The first part deals with the application of intense pulsed electric fields (PEF) in foods. It is intended to be a non-thermal method to inactivate microorganisms. LÄS MER
3. Processing of berries – Effects on functionality, stability and bioactivity of anthocyanins
Sammanfattning : Berries are rich natural sources of anthocyanins, water-soluble pigments in plants that have been linked to beneficial effects against chronic diseases, such as cardiovascular diseases, type 2 diabetes and neurodegenerative diseases. However, anthocyanins as well as other polyphenolic compounds are often sensitive to degradation during processing, storage and digestion. LÄS MER
4. Terahertz radiation as a pump and probe for studying low frequency vibrations in proteins
Sammanfattning : Many functionally important structural changes in proteins proceed along the direction of their lowest frequency vibrations. These vibrations correspond to picosecond collective dynamics. Establishing the fundamental relationship between these vibrations and protein function remains a challenge within biophysics. LÄS MER
5. Photodynamic therapy and laser-based diagnostic studies of malignant tumours
Sammanfattning : Two non-thermal regimens of light interaction with biological tissue, that are in a natural way connected, are discussed in the present thesis. These are photodynamic therapy (PDT) for the treatment of malignant tumours and laser-induced fluorescence (LIF) for tissue characterization. LÄS MER