Sökning: "local field potentials"

Visar resultat 1 - 5 av 17 avhandlingar innehållade orden local field potentials.

  1. 1. Theoretical Description of Electronic Transitions in Large Molecular Systems in the Optical and X-Ray Regions

    Författare :Nanna Holmgaard List; Jacob Kongsted; Hans Jørgen Aagaard Jensen; Roberto Cammi; Jeppe Olsen; Jens Oddershede; Denmark University of Southern Denmark Chemistry and Biology Department of Physics; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Polarizable embedding; multiscale modeling; localized electronic transitions; response theory; QM MM; damped linear response; non-dipolar effects; light-matter interactions; multipole expansion; embedding potentials; local field effects; fluorescent proteins; computational chemistry; MCSCF; Teoretisk kemi och biologi; Theoretical Chemistry and Biology;

    Sammanfattning : The size and conformational complexity of proteins and other large systems represent major challenges for today's methods of quantum chemistry.This thesis is centered around the development of new computational tools to gain molecular-level insight into electronic transitions in such systems. LÄS MER

  3. 2. Models and biomarkers of motor and neuropsychiatric complications in Parkinson’s disease

    Författare :Katrine Skovgård; Basala gangliernas patofysiologi; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Parkinson s disease Parkinsonism; Dyskinesia; Drug-Induced; Oscillations; Local field potentials; Impulsive-compulsive behaviours; Dopamine agonists; Animal Models; Pharmacology;

    Sammanfattning : Parkinson's disease (PD) is a neurodegenerative disorder characterised by typicalmotor symptoms that are caused by severe dopamine depletion in the cortico-basalganglia network. Parkinsonian motor symptoms are improved by dopaminergicmedications, the most effective being the dopamine precursor L-DOPA. LÄS MER

  4. 3. Examining neurobehavioral effects of chemosensory exposure to local irritants using event related potentials

    Författare :Stephanie Anja Juran; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : The aim of this thesis was to examine whether unpleasant odors disturb cognitive task performance. At first glance, it seems intuitive that for example the smell of fire smoke would immediately interrupt my current writing at the computer. LÄS MER

  5. 4. Model Vertices Beyond the GW Approximation

    Författare :Mikael Hindgren; Matematisk fysik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Matematisk och allmän teoretisk fysik; thermodynamics; statistical physics; gravitation; GW approximation; Electron self energy; Green s function; consistency; local-field corrections; vertex function; conserving approximations; variational energies; Mathematical and general theoretical physics; classical mechanics; relativity; quantum mechanics; klassisk mekanik; kvantmekanik; relativitet; statistisk fysik; termodynamik; Fysicumarkivet A:1997:Hindgren;

    Sammanfattning : We study the effects of local vertex corrections to the self energy of the electron gas. We find that a vertex derived from time-dependent density-functional theory can give accurate self energies without including the explicit time dependence of the exchange-correlation potential provided, however, that a proper decay at large momentum transfer (large q) is built into the vertex function. LÄS MER

  7. 5. Child welfare and professionalization

    Författare :Guðrún Kristinsdóttir; Umeå universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; child; child welfare; children s rights; contradictions; family; foster care; Iceland; local community; professionalization; social policy; social work; welfare state; Barnomsorg; Island; Ungdomsvård; välfärdspolitik;

    Sammanfattning : This study deals with the qualities of professionalization of public child welfare. Its relationto general social policy is emphasized. The potentials of welfarism are explored as a part ofthe study of crisis of legitimacy and rationality prevalent in welfare systems. LÄS MER