Sökning: "ablation"

Visar resultat 21 - 25 av 233 avhandlingar innehållade ordet ablation.

  1. 21. Formation of nanoparticles by laser-activated processes

    Författare :Lars Landström; Mats Boman; Peter Heszler; Joop Schoonman; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Inorganic chemistry; nanoparticles; laser-assisted CVD; laser ablation; emission spectroscopy; size-distribution; Oorganisk kemi; Inorganic chemistry; Oorganisk kemi; Inorganic Chemistry; oorganisk kemi;

    Sammanfattning : Due to the small dimensions, nanoparticles and materials consisting of nano-sized building blocks exhibit unique — mostly superior — properties, well differing from their bulk counterpart. Most of the novel properties of nanoparticles (and nanomaterials) are size-dependent, while the majority of the common gasphase methods used for generation of nanopowders result in different, usually wide, size-dispersions. LÄS MER

  3. 22. Small Intestinal Neuroendocrine Tumor : A Rare Malignancy with Favorable Outcome

    Författare :Olov Norlén; Peter Stålberg; Per Hellman; Peyman Björklund; Anders Sundin; Peter Naredi; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Neuroendocrine tumor; peritoneal carcinomatosis; single nucleotide polymorphism array; liver metastases; radiofrequency ablation; liver surgery; positron emission tomography; somatostatin analogs; cholecystectomy; Kirurgi; Surgery;

    Sammanfattning : Small intestinal neuroendocrine tumor (SI-NET) is the most common small bowel tumor in Europe and USA, with an annual incidence of around 0.3-1.3/100000 persons. LÄS MER

  4. 23. On the polymer-based nanocomposites for electrical switching applications

    Författare :Venkatesh Doddapaneni; Muhammet Sadaka Toprak; Hans Edin; Rudolf Gati; Matti Ilmari Lehtonen; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Polymer-based nanocomposites; Inorganic nanoparticles; Electrical arcs; Circuit breakers; Ablation Outgassing; Arc interruption capability; PMMA; CuO; Fe3O4; ZnO; Au; Radiative energy; Electric power; Arc temperature.; Physics; Fysik;

    Sammanfattning : Recent research demonstrated that polymer based nanocomposites (PNCs) have been engineered in order to improve the arc interruption capability of the circuit breakers. PNCs are the combination of nano-sized inorganic nanoparticles (NPs) and polymers, opened up new developments in materials science and engineering applications. LÄS MER

  5. 24. Finite Element simulations: computations and applications to aerodynamics and biomedicine

    Författare :Massimiliano Leoni; Johan Hoffman; David Kamensky; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; radiofrequency ablation; finite elements; numerical simulations; partial differential equations; biomedical applications; HPC; Computer Science; Datalogi;

    Sammanfattning :   Partial Differential Equations describe a large number of phenomena of practical interest and their solution usually requires running huge simulations on supercomputing clusters.  Especially when dealing with turbulent flows, the cost of such simulations, if approached naively, makes them unfeasible, requiring modelling intervention. LÄS MER

  7. 25. On the Environmental Relevance of Platinum Group Elements

    Författare :Sebastien Rauch; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; platinum; ICP-MS; automobile emission; catalyst ageing; palladium; laser ablation; urban particles; bioaccumulation; rhodium;

    Sammanfattning : It has recently been demonstrated that platinum group elements (PGE) are released from automobile catalysts into the environment, raising concern over ecological and human health risks. However, there is still a lack of knowledge regarding the dispersion and transformation of PGE in the environment and it is therefore difficult to assess potential risks. LÄS MER