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  • 1995-1999  (4)
  • 1930-1934
  • 1890-1899
  • 1998  (4)
  • 1
    Electronic Resource
    Electronic Resource
    Rotational analysis and tunnel splittings of the intermolecular vibrations of the phenol–water complex by high resolution UV spectroscopy (1998)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 108 (1998), S. 4496-4504 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Highly resolved (Δν〈100 MHz) UV-REMPI (ultraviolet-resonantly enhanced multiphoton ionization) spectra of different vibronic bands in the phenol–water complex are presented. The torsional splitting caused by the hindered rotation of the water moiety in the hydrogen-bonded system is investigated. An autocorrelation procedure reveals torsional subbands, a correlation automated rotational fitting (CARF) of the spectra yields the rotational constants: The analyzed vibrations are classified by the rotational constants of the corresponding vibronic band and the symmetry of the torsional state. The transition to the stretching vibration at 156 cm−1 excess energy is shown to consist of two different torsional transitions similar to the electronic origin. The torsional splitting in the origin band is 0.8491(2) cm−1 and that of the stretching vibration is 0.8915(3) cm−1, demonstrating a very small coupling between the stretching and the torsional motion. We assign the 121 cm−1 band as the negative parity component of the transition to the wagging vibration β2 while the band at 125 cm−1 is tentatively assigned as the positive parity component of the same band. The resulting large torsional splitting of −4.596(3) cm−1 points to a strong coupling to the torsional motion. The band at 95 cm−1 has only one torsional parity component within its rotational envelope. The observed large change of its rotational constants does not fit to the pattern of the other vibrations and the band is tentatively assigned as an overtone of the torsional vibration τ with positive parity. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.475861
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  • 2
    Electronic Resource
    Electronic Resource
    A new approach for determining effective soil hydraulic functions (1998)
    Oxford, UK : Blackwell Science Ltd
    European journal of soil science 49 (1998), S. 0 
    Details
    ISSN: 1365-2389
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: We investigated the possibility of inferring effective hydraulic properties of soil from the structure of the pore space. The aim was to identify structural properties, which are essential for water flow, so that physical experiments may be replaced by direct morphological measurements. The pore structure was investigated in three dimensions by serial sections through impregnated samples. The complex geometry of pore space was quantified in terms of two characteristics: pore-size distribution and pore connectivity. Only pores larger than 0.04 mm were considered. The results were used as input parameters for a pore-scale network model. The main desorption branch of the soil-water characteristic and the corresponding hydraulic conductivity function of the network model were calculated by numerical simulation. The simulation results, which are exclusively based on morphological investigations, were compared with independently measured results from a multi-step outflow experiment. This approach was demonstrated for two centrasting soil materials: the A and B horizons of a silty agricultural soil. The simulations were close to the experimental data, except for the absolute values of the hydraulic conductivity. The pore-size distribution and pore connectivity govern the shape of hydraulic functions and the applied morphometric methods are suitable for predicting essential characteristics of hydraulic soil properties.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-2389.1998.4940547.x
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  • 3
    Electronic Resource
    Electronic Resource
    Tödliche Aspiration von Bariumsulfat (1998)
    Springer
    Rechtsmedizin 8 (1998), S. 223-225 
    Details
    ISSN: 1434-5196
    Keywords: Key words Barium sulfate ; Incident by contrast ; radiography ; Aspiration pneumonia ; Schlüsselwörter Bariumsulfat ; Kontrastmittelzwischenfall ; Aspirationspneumonie
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Law
    Description / Table of Contents: Zusammenfassung Bericht über eine 64jährige Frau, die während einer Röntgenuntersuchung des oberen Verdauungstrakts mit Bariumsulfat einen Teil des Kontrastmittels aspirierte und 35 Stunden später, nach klinisch zunächst unauffälligem Verlauf, an den Folgen einer Aspirationspneumonie verstarb. Über eine derartige, letal verlaufene Aspiration von Bariumsulfat liegen im Schrifttum bisher nur wenige Mitteilungen vor. Aus radiologischer und rechtsmedizinischer Sicht waren konkrete Anhaltspunkte für ein ärztliches Fehlverhalten nach Auftreten der Komplikation nicht zu erkennen.
    Notes: Abstract The case of a 64-year-old woman who aspirated a moderate amount of barium sulfate contrast medium during a x-ray barium swallow is presented. After an initially inconspicious clinical course the patient died 35 h later of respiratory insufficiency from aspiration pneumonia. Only a few reports of fatalities due to aspiration of barium exist in the literature. From the forensic and radiological point of view no concrete clues for medical malpractice in the course of this complication associated with a barium swallow could be found.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001940050065
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  • 4
    Electronic Resource
    Electronic Resource
    Self-assembling functionalized templates in biosensor technology (1998)
    Springer
    Polymer bulletin 40 (1998), S. 151-157 
    Details
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract. A bifacial topological template exhibiting metal-binding sites and thioalkane chains has been incorporated into self-assembled monolayers and immobilised on gold surfaces: These systems allow for the detection of external ligands by SPR spectroscopy representing a first step in developing biosensors based on the TASP (Template Assembled Synthetic Proteins) concept.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002890050236
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