Search for dissertations about: "J. Tomas"

Showing result 1 - 5 of 15 swedish dissertations containing the words J. Tomas.

  2. 1. Aspects of Dimensional Deconstruction and Neutrino Physics

    Author : Tomas Hällgren; Tommy Ohlsson; Stephan J. Hubber; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Dimensional deconstruction; higher-dimensional gauge theories; discretized gravity; neutrino mass; neutrino mixing; neutrino oscillations; Engineering physics; Teknisk fysik;

    Abstract : The existence of at or curved extra spatial dimensions provides new insights into several of the problems which face the Standard Model of particle physics, including the gauge hierarchy problem, the smallness of neutrino masses, and the dark matter problem. However, higher-dimensional gauge theories are not renormalizable and can only be considered as low-energy effective theories, with limited applicability. READ MORE

  4. 2. Algorithms for Coherent Diffractive Imaging with X-ray Lasers

    Author : Benedikt J. Daurer; Filipe Maia; Tomas Ekeberg; Janos Hajdu; Richard Neutze; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; X-ray lasers; coherent diffractive imaging; algorithms; lensless imaging; flash diffractive imaging; flash X-ray imaging; aerosol injection; FEL; XFEL; CXI; CDI; FXI; Physics with specialization in Biophysics; Fysik med inriktning mot biofysik;

    Abstract : Coherent diffractive imaging (CDI) has become a very popular technique over the past two decades. CDI is a "lensless" imaging method which replaces the objective lens of a conventional microscope by a computational image reconstruction procedure. READ MORE

  5. 3. The use of evolutionary information in protein alignments and homology identification

    Author : Tomas Ohlson; Arne Elofsson; Sven Hovmöller; Geoffrey J. Barton; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Protein alignment homology sequence profile; Theoretical chemistry; Teoretisk kemi;

    Abstract : For the vast majority of proteins no experimental information about the three-dimensional structure is known, but only its sequence. Therefore, the easiest way to obtain some understanding of the structure and function of these proteins is by relating them to well studied proteins. This can be done by searching for homologous proteins. READ MORE

  6. 4. Aristotle on Contrariety as a Principle of First Philosophy

    Author : Jens Tomas Anfindsen; Lilli Alanen; Eyjólfur Kjalar Emilsson; Dominic J. O'Meara; Uppsala universitet; []
    Keywords : Philosophy; Ancient philosophy; Aristotle; contrariety; privation; metaphysics; ontology; theology; cosmology; being and non-being.; Filosofi; idé- och lärdomshistoria; History Of Sciences and Ideas;

    Abstract : This dissertation aims to reconstruct Aristotle’s theory of contrariety as a principle of first philosophy. According to Aristotle, any genus has one contrary opposition. It is the task of any science to study whatever contraries there are within the generic domain with which the science in question is concerned. READ MORE

  7. 5. Imaging Anxiety : Neurochemistry in Anxiety Disorders Assessed by Positron Emission Tomography

    Author : Andreas Frick; Mats Fredrikson; Tomas Furmark; David J Nutt; Uppsala universitet; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Fear; Brain; Serotonin; Neurokinin; Substance P; Psychology; Psykologi;

    Abstract : Anxiety disorders, including social anxiety disorder (SAD) and posttraumatic stress disorder (PTSD) are common and disabling conditions. Largely based on animal and pharmacological studies, both the serotonergic and substance P/neurokinin-1 (SP/NK1) systems have been implicated in their underlying pathology. READ MORE