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  • 1995-1999
  • 1990-1994  (3)
  • 1994  (3)
Material
Years
  • 1995-1999
  • 1990-1994  (3)
Year
  • 1
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Magnetic and specific-heat studies of U2T2X compounds show a frequent occurrence of the γ enhancement in conjunction with the onset of antiferromagnetic ordering. The largest value of 830 mJ/mol K2 was observed in U2Pt2In, which is nonmagnetic down to 1.2 K. Variations of electronic structure are documented by optimized relativistic LCAO calculation.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Journal of orofacial orthopedics 55 (1994), S. 104-110 
    ISSN: 1615-6714
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary The purpose of this study was to examine functional occlusion of impacted maxillary canines which had been moved orthodontically into the line of occlusion. Examinations were performed on both patients and on an articulator, which was adapted to correspond to the axiotraphical findigns. Functional contracts on the working side durign lateral movement of the mandible were found in all orthodontically aligned impacted canines. Half the aligned teeth were involved in canine guidance, half in group function. Balancing side interferences were detected in 22% of the cases. The result of this study revealed a nearly identical function in the aligned canines when compared with the spontaneously erupted canines on the other side of the same maxilla. This became apparent during lateral excursion of the mandible. The angle of mesiodistal inclination of the tooth central axis with an occlusal plane was 84 °, for aligned and 82 °, on average for the spontaneously erupted canines.
    Notes: Zusammenfassung Ziel der Untersuchung war es, retinierte Oberkiefereckzähne nach chirurgisch/kieferorthopädischer Einreihung hinsichtlich ihrer Funtion bei der dynamischen Okklusion sowie ihrer Einstellung im Zahnbogen zu analysieren. Dazu wurden die Art der Laterotrusionsführung untersucht und vorhandene Balancekontakte registriert. Dies erfolgte sowhol am Patienten als auch im Artikulator, der jeweils entsprechend den Ergebnissen der Axiographie adaptiert war. Alle mobilisierten Eckzähne waren an der Führung des Unterkiefers bei der lateralbewegung beteiligt, und zwar in jeweils der Hälfte deer Fälle an einer Eckzahnführung (reine Eckzhanführung, Front-/Eckzahnführung, Eckzahndominanz) bzw. an einer Gruppenführung (partielle, totale). Balancekontakte wurden in vier von 18 Fällen registriert, in denen ein mobilisierter Eckzahn an der Laterotrusion beteiligt war. Diese Kontakte waren ausschließlich auf den zweiten Molaren lokalisiert. Die Achsen der eingereihten Eckzähne waren so eingestellt, daß eine Kronenneigung nach mesial vorlag. Insgesamt zeigte sich, daß die untersuchten kieferorthopädisch eingereihten Eckzähne den spontan durchgebrochenen Kontrollzähnen funktionell gleichwertig waren, was die unteersuchten Parameter betraf.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Reaction kinetics and catalysis letters 53 (1994), S. 309-316 
    ISSN: 1588-2837
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Isomerization of n-butane over bifunctional Pd-impregnated catalyst pellets consisting of molecular sieve SAPO-31 or SAPO-11 and a silica binder has been investigated. Pd/SAPO-31 converts n-butane to iso-butane at temperatures of 700–725 K with good selectivities (more than 70% at conversion levels of 35–40%). The high activity is attributed to the outstanding properties of medium pore SAPOs for catalyzing the skeletal isomerization of intermediate butenes, which is considered to be the critical step in the reaction sequence.
    Type of Medium: Electronic Resource
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