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  • 1
    Electronic Resource
    Electronic Resource
    Effect of dental metals on magnetic resonance imaging (MRI) (1993)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of oral rehabilitation 20 (1993), S. 0 
    Details
    ISSN: 1365-2842
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The aim of this research was to examine the effects of metals used in dentistry upon magnetic resonance imaging (MRI). Ten disk-shaped samples of metals have been used in this study. Each sample has been set into a volunteer who had produced a normal MR image when tested. The subject was imaged in the sagittal, frontal and coronal plane with a 0.1T MRI device and results examined for MR defects.Au, Ag, Au-Ag-Pd and amalgam produced no defect. Ni-Cr, Co-Cr and SUS304 expressed small amounts of MR defects, but SUS405, Pd-Co-Ni and Sm-Co expressed large defects. Those metals which create MR image degradation must not be used for fixed prosthesis or orthodontic devices both of which could easily be made from other metals. If the MR image degrading metals are to be used in dentistry, their application should be restricted to removable prosthesis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2842.1993.tb01519.x
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Crystal structures and light absorption spectra of 1,4-dithioketo-3,6-diphenyl-pyrrolo-[3,4-c]-pyrrole (1991)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 70 (1991), S. 4065-4072 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: 1,4-dithioketo-3,6-diphenyl-pyrrolo-[3,4-c]-pyrrole, which is a good charge generation material for a near-infrared electrophotographic photoreceptor, has three polymorphs called the I, II, and III forms. The I and II forms are transformed into the III form after having been kept in suitable organic solvents. On the other hand, the III form is changed to the I and/or II forms by heat treatment above 320 °C. Among the three polymorphs, only the highly ordered III form shows the necessary and characteristic absorption in the near-infrared region.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.349156
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Demonstration of enterotoxigenic Escherichia coli in diarrheic broiler chicks (1990)
    Springer
    European journal of epidemiology 6 (1990), S. 88-90 
    Details
    ISSN: 1573-7284
    Keywords: Heat-labile enterotoxin (LT) ; Heat-stable enterotoxin (ST) ; GM1 ganglioside ELISA ; Suckling mouse assay
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract An investigation was made to survey the possible presence of enterotoxigenic Escherichia coli (ETEC) in the stools of diarrheal chicks. We analyzed two outbreaks of diarrhea in broiler chicks at two independent farms in the Philippines, from which no pathogens other than Escherichia coli were found. In one outbreak at Farm # 1, all 42 isolates produced heat-labile enterotoxin (LT), with 3 of these isolates also producing heat-stable enterotoxin (ST). The 0 serotypes of 15 strains tested randomly could not be identified as any known serotype (0-antigen; 1–170). In another outbreak at Farm #2, 7 out of 52 isolates produced only LT, their subtypes being identified as O-149 or O-8, common serotypes in pig ETEC. Strains from Farm #1 did not produce any pili usually found in human ETEC. We believe this to be the first isolation of ETEC from diarrheal chicks.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00155557
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  • 4
    Electronic Resource
    Electronic Resource
    A new crystal structure of 3,6-diphenylpyrrolo[3,4-c]pyrrole-1,4-dithione (1991)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 47 (1991), S. 1952-1956 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108270191002639
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    Paper (German National Licenses)
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