Sökning: "ablation"

Visar resultat 11 - 15 av 233 avhandlingar innehållade ordet ablation.

1. 11. Creating and Probing Extreme States of Materials : From Gases and Clusters to Biosamples and Solids

   Författare :Bianca Iwan; Nicusor Timneanu; Janos Hajdu; Stacey Sorensen; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; free-electron laser; ultrashort X-rays; non-equilibrium plasma; Coulomb explosion; isotope effect; hydrodynamic expansion; ion acceleration; high intensity lasers; ablation; time-of-flight spectroscopy; Fysik; Physics;

   Sammanfattning : Free-electron lasers provide high intensity pulses with femtosecond duration and are ideal tools in the investigation of ultrafast processes in materials. Illumination of any material with such pulses creates extreme conditions that drive the sample far from equilibrium and rapidly convert it into high temperature plasma. LÄS MER

3. 12. Curatively Intended Treatment of Colorectal Liver Metastases - Patient, Primary and Metastatic Pattern as Prognostic Factors

   Författare :Peter Scherman; Göteborgs universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Colorectal liver metastases; Prognostic factors; Primary tumor; Resection; Ablation; Postoperative complications; Resectability; Follow-up;

   Sammanfattning : Background: Resection and/or ablation of colorectal liver metastases (CRLM) is increasingly common and long-term results are improving. In this thesis prognosis of CRLM is studied in a wide perspective, with focus on common clinical factors to consider in preoperative decision making. LÄS MER

4. 13. High-resolution meteor exploration with tristatic radar methods

   Författare :Johan Kero; Asta Pellinen-Wannberg; Sigrid Close; Umeå universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; meteors; meteoroids; interplanetary dust; radar; head echoes; ablation; meteoroid fragmentation; radar; huvudekon; ablation; meteorisk fragmentation; meteorer; meteoroider; interplanetärt stoft; Space engineering; Rymdteknik;

   Sammanfattning : A meteor observed with the naked eye is colloquially called a shooting star. The streak of light is generated by an extra-terrestrial particle, a meteoroid, entering the Earth’s atmosphere. The term meteor includes both luminosity detectable by optical means and ionization detectable by radar. LÄS MER

5. 14. Meteoric Aerosols in the Middle Atmosphere

   Författare :Linda Megner; Jörg Gumbel; Martin Ridal; Gary E. Thomas; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; meteoroid; meteor; nucleation; mesosphere; stratosphere; ablation; smoke; NLC; PMSE; PSC; Atmosphere and hydrosphere sciences; Atmosfärs- och hydrosfärsvetenskap; atmosfärvetenskap; Atmospheric Sciences;

   Sammanfattning : This thesis concerns the fate of the meteoric smoke in the Middle Atmosphere, and its effect on ice phenomena such as noctilucent clouds (NLC) and polar stratospheric clouds (PSC). The potential role of NLC as tracer for mesospheric processes and variability, and as a tool for monitoring this remote and inaccessible region, has generated substantial interest within the scientific community. LÄS MER

7. 15. Lower limb venous incompetence and the effect of radiofrequency ablation versus open surgery : Focus on haemodynamics, quality of life and health economic aspects

   Författare :Oskar Nelzén; Helene Zachrisson; Toste Länne; Johan Skoog; Gunnar Plate; Linköpings universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Chronic venous incompetence; Varicose veins; Radiofrequency ablation; High ligation stripping Duplex ultrasound; Strain-gauge plethysmography; Quality of Life; Health economic evaluation;

   Sammanfattning : Chronic venous incompetence (CVI) is a common condition, and varicose vein treatment is one of the most-common surgical procedures performed worldwide. Common symptoms of CVI are pain, cramps, itching, feeling of leg heaviness and venous claudication. Advanced CVI can lead to skin changes, eczema and venous ulcers. LÄS MER