Sökning: "Johan Gustafson"

Hittade 4 avhandlingar innehållade orden Johan Gustafson.

  1. 1. Oxidation of some Late Transition Metal Surfaces: Structural Studies from UHV to Atmospheric Pressure

    Författare :Johan Gustafson; Synkrotronljusfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Kondenserade materiens egenskaper:struktur; phase equilibria; crystallography; thermal and mechanical properties; Condensed matter:stucture; density functional theory; scanning tunneling microscopy; surface x-ray diffraction; high resolution core level spectroscopy; low energy electron diffraction; metal surfaces; oxidation; catalysis; egenskaper termiska och mekaniska ; kristallografi; fasjämvikt;

    Sammanfattning : The oxidation of Rh, Pd and Pt is studied under conditions ranging from ultra high vacuum to ambient pressures, with emphasis on a complete understanding of the geometry of the various oxide structures found. The investigations use a combination of various experimental methods, including high resolution core level spectroscopy, low energy electron diffraction, surface x-ray diffraction and scanning tunneling microscopy, as well as density functional theory calculations. LÄS MER

  3. 2. In vitro and in vivo studies on biodegradable matrices for autotransplantation

    Författare :Carl-Johan Gustafson; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :In vitro; in vivo; dermis; matrix; autotransplantation; culture; keratinocytes; urothelium; tissue engineering; PUUR; macroporous spheres ; guided tissue regeneration;

    Sammanfattning : Tissue engineering (TE), one of the most rapidly growing fields of life science, is an interdisciplinary area in which technical, biological and medical expertise co-fertilize on another with the ultimate aim of restoring, maintaining or improving tissues and/or organs. This purpose links TE closely to research concerning reconstructive plastic surgery. LÄS MER

  4. 3. Morale in very old people : With focus on stroke, depression and survival

    Författare :Johan Niklasson; Yngve Gustafson; Hugo Lövheim; Aase Wisten; Sölve Elmståhl; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Morale; aged 80 and over; Sweden and Finland; Psychometrics testing; Feasibility studies; Quality of Life; Stroke; Depressive disorders; Geriatric psychiatry; Salutogenic factor; Survival; Longevity; Future-oriented optimism;

    Sammanfattning : Background: Morale is a multidimensional concept, often defined as a future-oriented optimism or pessimism regarding the problems and opportunities associated with ageing. Very old people, older than 80 years, constitute an age group that is expected to increase in Europe from 4.7% of the general population today to 12. LÄS MER

  5. 4. Dementia, depression and delirium in the very old : prevalences and associated factors

    Författare :Johan Mathillas; Yngve Gustafson; Hugo Lövheim; Sölve Elmståhl; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; dementia; depression; depressive disorders; delirium; aged; 80 and over; epidemiology; cross-sectional study; prevalence; risk factors; GDS-15; stroke; hypertension;

    Sammanfattning : Emotional suffering in old age is largely caused by a variety of psychiatric disorders which are often, however, undertreated and underrecognized. This leads to reduced quality of life and functional status and increased morbidity and mortality. Dementia, delirium and depression are common disorders in the very old, and are similar in several ways. LÄS MER