Sökning: "Per Johnsson"

Visar resultat 1 - 5 av 20 avhandlingar innehållade orden Per Johnsson.

  1. 1. Attosecond Optical and Electronic Wave Packets

    Författare :Per Johnsson; Atomfysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; optik; acoustics; optics; Electromagnetism; Ionization Dynamics; Electron Wave Packet Interferometry; Electron Wave Packet Control; Pulse Characterization; High-Order Harmonics; Attosecond Pulse Trains; Atom- och molekylärfysik; Atomic and molecular physics; akustik; Elektromagnetism;

    Sammanfattning : When a low-frequency laser pulse is focused to a high intensity in a gas, the electric field of the laser may become comparable to, or even exceed, the electric field between the electrons and the nucleus in the atom. Under such conditions, through a process known as high-order harmonic generation, bursts of extreme ultraviolet radiation may be emitted, with durations in the attosecond domain (1 as = 10^{-18} s), which is the time-scale of electronic processes. LÄS MER

  3. 2. Characterization of non-coding RNAs in cancer

    Författare :Per Johnsson; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : While originally though to only code for proteins, it now stands clear that RNA is a multifunctional molecule involved in a great variety of molecular processes. Recent advances in genome-wide platforms have revealed underappreciated roles of non-protein coding RNAs (ncRNAs). LÄS MER

  4. 3. Genomics of chicken domestication and feralisation

    Författare :Martin Johnsson; Dominic Wright; Per Jensen; Dirk-Jan de Koning; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Domestication can serve as a study system of rapid evolutionary change with wide-ranging effects on traits in animals. The chicken was domesticated from the Red Junglefowl and has diverged in behaviour, morphology and life history traits. LÄS MER

  5. 4. The importance of being thin : perceived expectations from self and others and the effect on self-evaluation in girls with disordered eating

    Författare :Sanna Aila Gustafsson; Claes Norring; Lars Kjellin; Birgitta Edlund; Per Johnsson; Örebro universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Eating disorders; risk factors; protective factors; sociocultural factors; gender; perfectionism; personal standards; competitiveness; phenomenography.; MEDICINE; MEDICIN; Psychiatry; Psykiatri; Psychiatry; Psykiatri;

    Sammanfattning : The overall aims of this thesis were to examine personal standards, self-evaluation and attitudes to eating and weight in the development of disturbed eating in adolescent girls, and to examine how adolescent girls with a clinical eating disorder reflect upon and deal with perceived expectations in daily life.Studies I and II were quantitative studies, conducted in a population-based longitudinal study. LÄS MER

  7. 5. Disordered eating among Swedish adolescents : associations with emotion dysregulation, depression and self-esteem

    Författare :Erika Hansson; Per Johnsson; Daiva Daukantaité; Öijvind Rö; Högskolan Kristianstad; []
    Nyckelord :SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; Disordered eating; emotion dysregulation; depression; self-esteem; SCOFF; parental associations;

    Sammanfattning : The path to an eating disorder (ED) always leads through a borderland, which, in this thesis, is referred to as disordered eating (DE) (Neumark-Sztainer, Wall, Eisenberg,Story, & Hannan, 2006; Waaddegaard, Thoning, & Petersson, 2003). In this borderland, people tend to make unhealthy eating choices, such as greatly reducing their food intake, self-inducing vomiting, or engaging in binge eating, but not to the extent that they would receive an ED diagnosis. LÄS MER