Search for dissertations about: "temperature and coagulation"

Showing result 1 - 5 of 32 swedish dissertations containing the words temperature and coagulation.

  2. 1. Physical Aspects of Thermotherapy - A study of heat transport with a view to treatment optimisation

    Author : Johan Olsrud; Sektion V; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; magnetic resonance; non-invasive; temperature; coagulation; prostatic; menorrhagia; liver tumour; finite element method FEM ; thermal conductivity; intracavitary; interstitial; laser; Thermotherapy; hyperthermia; MRI; Medicine human and vertebrates ; Medicin människa och djur ; Physics; Fysik; Fysicumarkivet A:1998:Olsrud;

    Abstract : Local treatment with the aim to destruct tissue by heating (thermotherapy) may in some cases be an alternative or complement to surgical methods, and has gained increased interest during the last decade. The major advantage of these, often minimally-invasive methods, is that the disease can be controlled with reduced treatment trauma and complications. READ MORE

  4. 2. Medical Laser-Induced Thermotherapy - Models and Applications

    Author : Christian Sturesson; Lund Kirurgi; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; blood perfusion; mathematical modelling; liver tumours; Atomic and molecular physics; benign prostatic hyperplasia; Atom- och molekylärfysik; Fysicumarkivet A:1998:Sturesson; hyperthermia; Coagulation; tissue optical properties;

    Abstract : Heat has long been utilised as a therapeutic tool in medicine. Laser-induced thermotherapy aims at achieving the local destruction of lesions, relying on the conversion of the light absorbed by the tissue into heat. In interstitial laser-induced thermotherapy, light is focused into thin optical fibres, which are placed deep into the tumour mass. READ MORE

  5. 3. Some aspects on the physical chemistry of kraft lignins in aqueous solutions : Theoretical considerations and practical implications

    Author : Magnus Norgren; Mittuniversitetet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; kraft pulping; kraft lignin; phenolic groups; dissociation; pKa; molecular weight; temperature; ionic strength; pOH; polydispersity; coagulation; Poisson-Boltzmann; DLVO; Chemistry; Kemi;

    Abstract : .... READ MORE

  6. 4. Impact of Tissue Characteristics on Radio-Frequency Lesioning and Navigation in the Brain : Simulation, experimental and clinical studies

    Author : Johannes Johansson; Karin Wårdell; Hans von Holst; Linköpings universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Brain; Radio frequency ablation; Finite element method; Monte Carlo simulation; light reflectance; Radiological research; Radiologisk forskning;

    Abstract : Radio-Frequency (RF) lesioning, or RF ablation, is a method that uses high frequency currents for thermal coagulation of pathological tissue or signal pathways. The current is delivered from an electrode, which also contains a temperature sensor permitting control of the current at a desired target temperature. In the brain, RF lesioning can e.g. READ MORE

  7. 5. Wettability and Agglomeration Characteristics of Non-Metallic Inclusions

    Author : Changji Xuan; Pär Jönsson; Lauri Holappa; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; wettability; non-metallic inclusion; agglomeration mechanism; attraction force; complex deoxidation; particle addition; Materials Science and Engineering; Teknisk materialvetenskap;

    Abstract : In this thesis, both the wettability and the agglomeration characteristics of non-metallic inclusions in liquid iron/steel were studied by using both experimental results and thermodynamic considerations. The mechanisms of the wettability of different types of inclusions were discussed. READ MORE