Sökning: "Anna Laurell"

Visar resultat 1 - 5 av 8 avhandlingar innehållade orden Anna Laurell.

  1. 1. Development and Studies of the Processes Involved in Minor Enantiomer Recycling

    Författare :Anna Laurell Nash; Christina Moberg; Karl Anker Jørgensen; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; asymmetric catalysis; biocatalysis; cyanohydrins; dual activation; Lewis acid; Lewis base; minor enantiomer recycling; recycling; titanium; Kemi; Chemistry;

    Sammanfattning : This thesis describes the development and rationalization of processes involved in a new methodology developed in our group, minor enantiomer recycling.The first part of the thesis addresses mechanistic studies of one of the reactions involved in minor enantiomer recycling, dual Lewis acid-Lewis base catalyzed acetylcyanation of aldehydes. LÄS MER

  3. 2. Optical parametric amplification with periodically poled KTiOPO4

    Författare :Anna Fragemann; Fredrik Laurell; Ebrahim-Zadeh Majid; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; nonlinear optics; optical parametric amplification; optical parametric generation; optical parametric oscillation; Optical physics; Optisk fysik;

    Sammanfattning : This thesis explores the use of engineered nonlinear crystals from the KTiOPO4 (KTP) family as the gain material in optical parametric amplifiers (OPAs), with the aim to achieve more knowledge about the benefits and limitations of these devices. The work aims further at extending the possible applications of OPAs by constructing and investigating several efficient and well performing amplifiers. LÄS MER

  4. 3. Targeting molecules for diagnostics of Head and Neck squamous cell carcinoma

    Författare :Anna-Karin Haylock; Marika Nestor; Göran Laurell; Matti Anniko; Katrine Riklund; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; HNSCC; CD44v6; radio-immunodiagnosis; immuno-PET; tumor targeting; antibodies; antibody fragments; Oto-Rhino-Laryngology; Oto-rhino-laryngologi;

    Sammanfattning : To personalize treatment for cancer, correct staging of the primary tumor, nodal disease and metastatic disease is of essence. By targeting tumor specific receptors with radiolabeled antibodies, specificity and accuracy of imaging may be improved. LÄS MER

  5. 4. Human papillomavirus in sinonasal inverted papilloma, recurrent respiratory papilloma and non-malignant tonsils

    Författare :Anna M. Holm; Katarina Olofsson; Karin Nylander; Göran Laurell; Stina Syrjänen; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Human papillomavirus; recurrent respiratory papillomatosis; sinonasal inverted papilloma; non-malignant tonsillar disease; Epstein-Barr virus; immune system; p16; Hyaluronan; Oto-Rhino-Laryngology; oto-rhino-laryngologi;

    Sammanfattning : Background: Human papillomavirus (HPV) is known to cause recurrent respiratory papilloma (RRP) and certain types of oropharyngeal cancer. HPV has also been associated with sinonasal inverted papilloma (SIP). LÄS MER

  7. 5. Recurrent events and secondary prevention after acute cerebrovascular disease

    Författare :Anna-Lotta Irewall; Thomas Mooe; Katarina Laurell; Lindgren Arne; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; stroke; transient ischemic attack; secondary prevention; socioeconomic position; prognosis; randomized controlled trial;

    Sammanfattning : Background Patients who experience a stroke or transient ischemic attack (TIA) are at high risk of recurrent stroke, but little is known about temporal trends in unselected populations. Reports of low adherence to recommended treatments indicate a need for enhanced secondary preventive follow-up to achieve the full potential of evidence-based treatments. LÄS MER