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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    International journal of biometeorology 35 (1991), S. 61-62 
    ISSN: 1432-1254
    Keywords: Airborne pollen ; Volumetric pollen sampling ; Pollen flight information service ; GDR
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geography , Physics
    Notes: Abstract Volumetric air sampling via the Burkard pollen and spore trap is described. The influence of meteorological factors on the occurrence of airborne pollen was investigated; the concentration of pollen grains is increased in strata of reduced vertical air exchange. A pollen flight information service has been developed since 1989 for Erfurt and other areas in the former German Democratic Republic.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-2234
    Keywords: Direct ; CPHF ; GIAO ; Polarizability ; NMR ; Magnetic shielding ; Carbon ; C60 ; C70
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary The ab initio SCF computation of second-order properties of large molecules (with 50 atoms or more) on workstation computers is demonstrated for static dipole polarizabilities and nuclear magneting shieldings. The magnetic shieldings are calculated on the basis of gauge including atomic orbitals (GIAO). Algorithmic advances (semi-direct algorithms with efficient integral pre-screening, and use of a quadratically convergent functional for the polarizabilities) are presented together with an illustrative application to the fullerenes C60 and C70.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Journal of orofacial orthopedics 55 (1994), S. 261-267 
    ISSN: 1615-6714
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary The therapeutical repertoire for treating patients with missing teeth was significantly expanded by the development of modern implant methods. We have performed a retrospective analysis convering all children who between 1977 and 1993 had been considered for implants as a method for gap management. All patients were pretreated up to early adolescence using standard orthodontic procedures. Unfortunately, it turned out that an originally planned implant was not suitable in approximately 2/3 of the patients because of inadequate alveolar conditions. These patients were subsequently treated by conventional orthodontic gap closure or adhesive prosthetics.
    Notes: Zusammenfassung Das therapeutische Repertoire zur Behandlung von Patienten mit fehlenden Zähnen wurde erheblich erweitert durch die Entwicklung moderner Implantationsmethoden. Wir haben die Behandlungsverläufe der Kinder, bei denen im Zeitraum von 1977 bis 1993 Implantate geplant wurden, einer retrospektiven Analyse unterzogen. Alle Patienten wurden kieferorthopädisch vorbehandelt. Leider zeigt sich, daß das ursprünglich geplante Implantat bei etwa zwei Drittel der Patienten wergen ungenügender Alveolarkammverhältnisse nicht zur Anwendung kommen konnte. Diese Patienten wurden in der Folge durch kieferorthopädischen Lückenschluß oder durch Adhäsivbrücken versorgt.
    Type of Medium: Electronic Resource
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