Sökning: "Håkan Smith"

Visar resultat 1 - 5 av 6 avhandlingar innehållade orden Håkan Smith.

  1. 1. Runaway electrons and Alfvén eigenmodes in tokamaks

    Författare :Håkan Smith; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; two-way diffusion equation; compressional Alfvén eigenmode; fusion plasma physics; tokamak disruption; runaway electron; Alfvén cascade;

    Sammanfattning : Runaway electrons can be generated as a consequence of the rapid thermal quench of the plasma in a tokamak disruption. If the time scale of this cooling is short compared to the collision time in the tail of the electron velocity distribution, incomplete thermalisation of this tail leads to a burst of runaway production. LÄS MER

  3. 2. Runaway Electrons and Alfvén Eigenmodes in Tokamaks

    Författare :Håkan Smith; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : .... LÄS MER

  4. 3. Surveillance of Antibiotic Consumption and Antibiotic Resistance in Swedish Intensive Care Units

    Författare :Marcus Erlandsson; Håkan Hanberger; Nils Smith-Erichsen; Linköpings universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Bacterial Antibiotic resistance; Antibiotic Consumption; ICU; Surveillance programme; Multi drug resistance; Pseudomonas aeruginosa; ICU demography; Infectious diseases; Infektionssjukdomar;

    Sammanfattning : Introduction: Nosocomial infections remain a major cause of mortality and morbidity. The problem is most apparent in intensive care units (ICUs). Most ICU patients are compromised and vulnerable as a result of disease or severe trauma. One in ten people admitted to hospital is given an antibiotic for infection. LÄS MER

  5. 4. Dual control concepts for linear dynamical systems

    Författare :Mina Ferizbegovic; Håkan Hjalmarsson; Thomas B. Schön; Cristian R. Rojas; Roy Smith; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electrical Engineering; Elektro- och systemteknik;

    Sammanfattning : We study simultaneous learning and control of linear dynamical systems. In such a setting, control policies are derived with respect to two objectives: i) to control the system as well as possible, given the current knowledge of system dynamics (exploitation), and ii) to gather as much information as possible about the unknown system that can improve control (exploration). LÄS MER

  7. 5. The Utility of Ultrasmall Superparamagnetic Iron Oxide Contrast Agents for Cardiovascular Magnetic Resonance Imaging

    Författare :Lars Johansson; Håkan Ahlström; Hans-Jørgen Smith; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Radiology; Magnetic resonance imaging; Contrast agent; Iron Oxide; Cardiovascular; Radiologisk forskning; Radiological research; Radiologisk forskning;

    Sammanfattning : The purpose of this thesis was to investigate the utility of the Ultrasmall Superparamagnetic Iron Oxide Particle (USPIO), NC100150 Injection for assessment of macro- and microvascular morphology and function using magnetic resonance imaging. The feasibility of NC100150 Injection was tested for the following applications: Coronary angiography, Thrombus detection, Cardiac function, Myocardial perfusion, Assessment of myocardial blood volume and water exchange and finally assessment of endothelial integrity of the myocardium. LÄS MER