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  • 1
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    German Medical Science GMS Publishing House; Düsseldorf
    In:  Mainz//2011; 56. Jahrestagung der Deutschen Gesellschaft für Medizinische Informatik, Biometrie und Epidemiologie (gmds), 6. Jahrestagung der Deutschen Gesellschaft für Epidemiologie (DGEpi); 20110926-20110929; Mainz; DOC11gmds310 /20110920/
    Publication Date: 2011-09-20
    Keywords: Vitamin D ; Myocardial infarction ; Prospective study ; ddc: 610
    Language: German
    Type: conferenceObject
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  • 2
    Electronic Resource
    Electronic Resource
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 108 (1998), S. 7229-7243 
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Photodissociation in the Herzberg continuum of molecular oxygen has been studied at 236, 226 and 204 nm. Using ion-imaging and monitoring of O(3Pj), j=0, 1, and 2 product-atom angular distributions, the amount of parallel character of the transition was measured. In order to interpret these data, analyses of the photoabsorption oscillator strengths and the parallel-perpendicular nature of the Herzberg I, II and III bands, and extrapolation of these properties into the Herzberg-continuum region have been performed. Our measured fine-structure-averaged angular distributions are found to be consistent with this photoabsorption model. In addition, the dynamics of the dissociation process is discussed, based on the O-atom fine-structure distributions. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 107 (1997), S. 9447-9456 
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: A theoretical analysis is given of the photofragment anisotropy of long-lived vibrational states as a function of the rotational level and as a function of the predissociation mechanism. The anisotropy of the lower rotational levels is a strong analytical tool for the identification of the electronic symmetry in the final continuum state. Experiments have been performed on the (4pπ)e 1Πu(v=0) Rydberg state and b′ 1Σu+(v=16) valence state in molecular nitrogen using fast beam translational spectroscopy. The rotational levels of the e 1Πu state yield both N(4S)+N(2P) and N(4S)+N(2D) products. We found different angular distributions for 4S+2P and 4S+2D fragments, although originating from the same rotational level. The observed anisotropy parameters, also called β parameters, have been interpreted and point to the presence of complex predissociation pathways involving mixing with known nearby bound and continuum states. The b′ 1Σu+(v=16) state produces dominantly 4S+2D fragments. We give a suggestion for the most likely dissociation mechanism based on the observed angular distribution. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Decay pathways and photofragment anisotropy parameters have been determined for a series of rovibrational levels of the g 3Σg+ state in molecular hydrogen using fast-beam photofragment spectroscopy. The g 3Σg+(v=4) levels are found to be weakly predissociated by homogeneous interaction with the lower lying n=2 a 3Σg+ state and by rotational coupling with the i 3Πg state. The observed photofragment anisotropy reveals fine and hyperfine structure depolarization. The decay of g 3Σg+(v=5) levels is dominated by barrier tunneling. The anisotropy parameters identify the symmetry of the continuum to be of mixed Σg and Πg character, which implies that hydrogen molecules can tunnel through two different barriers. The determination of the kinetic energy and the anisotropy parameter of the photofragments have resulted in a number of spectral reassignments. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
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