Sökning: "Per Bäck"

Visar resultat 1 - 5 av 8 avhandlingar innehållade orden Per Bäck.

  1. 1. On Hom-associative Ore Extensions

    Författare :Per Bäck; Sergei Silvestrov; Johan Richter; Lars Hellström; Anatoliy Malyarenko; Joakim Arnlind; Mälardalens universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Mathematics Applied Mathematics; matematik tillämpad matematik;

    Sammanfattning : In this thesis, we introduce and study hom-associative Ore extensions. These are non-unital, non-associative, non-commutative polynomial rings in which the associativity condition is “twisted” by an additive group homomorphism. LÄS MER

  3. 2. Implementation of MRI gel dosimetry in radiation therapy

    Författare :Sven Bäck; Malmö Medicinsk strålningsfysik; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; oncology; Cytology; uncertainty; detector; dosimeter; ferrous ions; gel dosimetry; magnetic resonance imaging; monomers; polymerisation; proton; treatment planning verification; radiation therapy; cancerology; Cytologi; onkologi; cancer;

    Sammanfattning : Gel dosimetry was used together with magnetic resonance imaging (MRI) to measure three-dimensional absorbed dose distributions in radiation therapy. Two different dosimeters were studied: ferrous- and monomer gel, based on the principles of radiation-induced oxidation and polymerisation, respectively. LÄS MER

  4. 3. Redox reactions and structure - properties relations in mixed alkali/alkaline earth glasses : The role of antimony oxides during the fining process- A structural study of copper(I) and copper(II)

    Författare :Lina Grund Bäck; Bo Jonson; Leena Hupa; Linnéuniversitetet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fining; oxygen activity; redox reactions; mixed alkali effect; mixed alkali silicate glasses; copper; antimony; Glasteknologi; Glass Technology;

    Sammanfattning : It is important to optimize glass compositions for their specific purpose but also for the efficiency of the production process, the manufacturing of glass. This will be beneficial economically and environmentally. LÄS MER

  5. 4. Exercise-Based Cardiac Rehabilitation in Patients with Coronary Artery Disease : Attendance, Adherence and the Added Value of a Behavioural Medicine Intervention

    Författare :Sabina Borg; Maria Bäck; Birgitta Öberg; Lennart Nilsson; Joep Perk; Linköpings universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES;

    Sammanfattning : Background: Coronary artery disease (CAD) is the leading global cause of death. After an index event related to CAD, exercise-based cardiac rehabilitation (exCR) is strongly recommended as part of the secondary prevention. LÄS MER

  7. 5. Hepatitis C virus infection : a nationwide study of associated morbidity and mortality

    Författare :Ann-Sofi Duberg; Erik Bäck; Karl Ekdahl; Rolf Hultcrantz; Anders Blaxhult; Johan Carlson; Örebro universitet; []
    Nyckelord :HCV; hepatitis C; epidemiology; non-Hodgkin s lymphoma; NHL; multiple myeloma; primary liver cancer; HCC; mortality; inpatient care; hospitalization; MEDICINE; MEDICIN; Infektionssjukdomar; Infectious Diseases; Epidemiology; Epidemiologi; Medicin; Medicine;

    Sammanfattning : The hepatitis C virus (HCV) was characterised in 1989. HCV was transmitted through transfusion of blood/blood products, but injection drug use is now the most common route of transmission. LÄS MER