Sökning: "Leif Larsson"

Visar resultat 1 - 5 av 15 avhandlingar innehållade orden Leif Larsson.

  1. 1. Preparation and characterisation of perovskite and noble metal promoted oxide based catalysts

    Författare :Leif Dahl; Ragnar Larsson; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Chemistry; Kemi; oorganisk kemi; Inorganic Chemistry;

    Sammanfattning : This work concerns efforts to improve or replace noble-metal based catalysts used for car exhaust purification.Various oxide based catalysts have been prepared by impregnating washcoats such as (-Al2O3 and SiO2 with appropriate metal ions, and assemblies calcinated at elevated temperatures have been tested for catalytic activity in the oxidation of CO and C3H6 and reduction of NO. LÄS MER

  3. 2. Medeltid i centrum : europeisering, historieskrivning och kulturarvsbruk i norrländska kulturmiljöer

    Författare :Leif Grundberg; Evert Baudou; Thomas B. Larsson; Johan Rönnby; Umeå universitet; []
    Nyckelord :Archaeology; medieval; central places; Norrland; Ångermanland; Medelpad; hermeneutics; Europeanization; historiography; local history research; cultural heritage; use of history; cultural environment; regional development; Arkeologi; Archaeology; arkeologi;

    Sammanfattning : This thesis aims to shed light upon three related research areas with the medieval period at their core: medieval Europeanization, the historiography of medieval places, the importance of the cultural environment and medieval period for the present day. By these means several current research angles are integrated within medieval research, the history of science and cultural heritage research. LÄS MER

  4. 3. Allergic airway disease : studies on diesel exhaust exposures, oxylipins and antioxidants

    Författare :Nirina Larsson; Annelie Behndig; Leif Bjermer; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Asthma; allergic rhinits; diesel exhaust; airway inflammation; oxylipins; metabolomics; antioxidants; SVCT2; bronchoscopy; lungmedicin; Lung Medicine;

    Sammanfattning : Allergic airway disease, i.e. allergic rhinitis (AR) and asthma, is a common health problem. The prevalence is increasing in most countries of the world. LÄS MER

  5. 4. Computational Approaches to the Identification and Characterization of Non-Coding RNA Genes

    Författare :Pontus Larsson; Anders Virtanen; Leif Kirsebom; Stephen Mount; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; ncRNA; snRNA; U1; splice site; alternative splicing; Dictyostelium; nucleotide composition; partial sums; Bioinformatics; Bioinformatik;

    Sammanfattning : Non-coding RNAs (ncRNAs) have emerged as highly diverse and powerful key players in the cell, the range of capabilities spanning from catalyzing essential processes in all living organisms, e.g. protein synthesis, to being highly specific regulators of gene expression. LÄS MER

  7. 5. Public Values and Decision Making in the Swedish e-Government Context

    Författare :Leif Sundberg; Katarina L Gidlund; Aron Larsson; Elin Wihlborg; Mittuniversitetet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; decision making; public values; e-Government; beslutsteori; värdeteori; nyttorealisering; digitalisering; e-förvaltning; offentlig sektor;

    Sammanfattning : This thesis addresses topics of public values and decision making in relation to the use of technology in the public sector. The research is conducted in the Swedish government context. A range of values that is specific to the public sector has been defined and classified in prior research. LÄS MER