Sökning: "cavities"

Visar resultat 11 - 15 av 213 avhandlingar innehållade ordet cavities.

1. 11. Higher harmonic cavities at 3rd generation synchrotron light sources

   Författare :Mattias Georgsson; Lunds universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Double RF system; Electron storage ring; Instabilities; Landau damping; Beam lifetime; Physics; Synchrotron radiation; Fysik;

   Sammanfattning : Synchrotron radiation is a tool widely used in science. It is produced by electron accelerators called storage rings. With the high performance of the 3rd generation synchrotron light sources, the scientific results are excellent. It is important to identify and overcome the limitations of a storage ring in order to enhance its performance. LÄS MER

3. 12. Mesothelial differentiation, mesothelioma and tumor markers in serous cavities

   Författare :Miklós Gulyás; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :Mesothelium; mesothelioma; differentiation; differential gene expression; proteoglycans; tumor markers; effusion;

   Sammanfattning : Mesothelial cells covering the serous membranes are of mesodermal origin although they acquire several characteristics of epithelial cells. The cytological and histological diagnosis of malignant tumors in serous cavities is sometimes a major challenge: the main diagnostic alternatives are reactive benign mesothelium, mesothelioma and adenocarcinoma. LÄS MER

4. 13. The influence of tyre air cavities on vehicle acoustics

   Författare :Èric Torra i Fernàndez; Anders Nilsson; Wim Desmet; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; acoustics; tyre-road noise; tyre; air cavity resonances; interior noise; aluminium foams; Acoustics; Akustik;

   Sammanfattning : The tonal character of the low frequency internal noise in cars is often due to energy transmission through the tyre at the first few eigenfrequencies of the air cavity of the tyre. The first acoustic mode in the air cavity of a typical stationary car tyre is approximately 224 Hz. LÄS MER

5. 14. Ensembles and Open Quantum Systems in Polaritonic Chemistry

   Författare :Eric Davidsson; Markus Kowalewski; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Polaritonic Chemistry; Optical Cavities; Open Quantum Systems; Quantum Simulations; teoretisk fysik; Theoretical Physics;

   Sammanfattning : Optical cavities—where spatial confinement can focus electromagnetic excitations—are able to couple matter to light with enough strength that the behaviour of the combined system is best understood in terms of polaritonic states; mixtures of excitations in both light and matter. This polaritonic regime provides a novel approach for modification and control of chemical reactions, and lately, experimental advancements are realising this potential. LÄS MER

7. 15. Ensembles and Open Quantum Systems in Polaritonic Chemistry

   Författare :Eric Davidsson; Markus Kowalewski; Gerrit Groenhof; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Polaritonic Chemistry; Open Quantum Systems; Cavity QED; The Jaynes-Cummings Model; Optical Cavities; Computational Quantum Dynamics; Theoretical Physics; teoretisk fysik;

   Sammanfattning : Optical cavities are structures where excitations in the electromagnetic field (photons of light) are confined and generally long-lived. The spatial confinement will enhance interactions with any matter systems in the cavity, such that the behaviour of a combined system is best understood in terms of polaritonic states; mixtures of excitations in both light and matter. LÄS MER