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  • 1
    Electronic Resource
    Electronic Resource
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 52 (1996), S. 2002-2004 
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1433-044X
    Keywords: Key words Impingement lesion • Cuff repair • Subacromial decompression • Acromion osteotomy ; Schlüsselwörter Impingement • Rotatorenmanschettenrekonstruktion • Akromionaufrichteosteotomie
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Verschiedenste Ursachen können zu einem Impingementsyndrom der Schulter führen (unterschiedliche Architektur des Akromions, AC-Gelenkpathologien, chronische Bursitis subacromialis, glenohumerale apikale Instabilität u. a. m.). Neer beschrieb 1972 die Technik der vorderen Akromioplastik zur operativen Behandlung des Impingementsyndroms. Dieser Technik sind ebenfalls Grenzen gesetzt, sei es durch ein zu dünnes, zu kurzes oder gekrümmtes Akromion oder im Zusammenhang mit einer aufwendigen Rekonstruktion der Rotatorenmanschette. Wir beschreiben eine neue Technik: Die Aufrichteosteotomie des Akromions (AAO). Durch das neue Konzept der Subakromialraumerweiterung erreichen wir zudem intraoperativ einen optimalen Überblick. Die AAO erlaubt uns, auch schwierigste, weit nach dorsal reichende Rekonstruktionen der Rotatorenmanschette mühelos durchzuführen. Wir können mit dieser Methode den Subakromialraum dosiert, dem Bedarf angepaßt, erweitern und müssen keinen Verlust von Akromionfläche in Kauf nehmen. Nach der Rekonstruktion wird das aufgerichtete Akromion mit 2 kanülierten Schrauben osteosynthetisiert. In einer retrospektiven Studie vergleichen wir die Resultate von 30 Deltoideuslappen (DL)plastiken mit AAO mit 30 DL-Plastiken ohne gleichzeitige AAO; die Resultate von 29 Rekonstruktionen nach Debeyre mit AAO und die Resultate der Behandlung von 18 hochgradigen Impingementsyndromen mit einer AAO.
    Notes: Summary There are many different causes leading to impingement lesions of the shoulder (e. g., architecture of the acromion, arthritis of the acromioclavicular joint, bursitis subacromialis, chronic instability). There are also different ways of treating it. Neer described his technique of anterior acromioplasty in 1972. With this technique there is sometimes a limitation in the amount of resection possible because of the anatomical findings (i. e., very curved or small acromion). We developed a new technique: the lift-up osteotomy of the acromion (LOA). This technique allows us to gain as much subacromial space as needed (e. g., for large anterior deltoid flaps). Osteotomy of the acromion gives an excellent view of the rotator cuff. Even large lesions can easily be repaired. After the cuff repair is done, the acromion is refixed with two canulated screws. So far, we have used this LOA technique in more than 100 patients in impingement operations, cuff repairs and anterior deltoid flaps all with good results.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Chichester : Wiley-Blackwell
    Organic Magnetic Resonance 30 (1992), S. 466-475 
    ISSN: 0749-1581
    Keywords: Heteronuclear NOE ; Selective pulses ; Shaped pulses ; Sequential excitation ; Improved data accumulation ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: An improved 1D pulse sequence for detecting heteronuclear NOEs on a qualitative level is described and demonstrated. It makes use of shaped selective pulses and takes advantage of sequential perturbation of several proton resonances during one experiment and correspondingly more efficient data accumulation schemes. The method is particularly suitable for assigning quaternary carbons and for establishing connectivities between assigned molecular fragments bound to these quaternary centres.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Chichester : Wiley-Blackwell
    Organic Magnetic Resonance 28 (1990), S. 205-211 
    ISSN: 0749-1581
    Keywords: Tetramethyllimonene ; Assignments ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Dynamic effects of tetramethyllimonene were studied at low temperatures. Nuclear Overhauser effects measured under optimized conditions at 223 K and the results of 2D correlation experiments allowed the identification of two conformers and the assignment of all the proton and carbon resonances. For the determination of exchange and relaxation rates the method of saturation transfer was applied. At temperatures below 223 K further dynamic effects were recognized. Structural information obtained experimentally was compared with the results of Allinger force field calculations.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Chichester : Wiley-Blackwell
    Organic Magnetic Resonance 29 (1991), S. 834-847 
    ISSN: 0749-1581
    Keywords: Cembrenenol ; Cyclic diterpene ; Conformational analysis ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The solution structure of the cyclic diterpene cembrenenol was investigated. A strategy for conformational analysis is proposed which is based on computational methods and experiments to determine the structure-relevant NMR parameters. Computed and experimentally determined steady-state NOEs were compared in a first step, which served to sort out a few probable conformers. The detailed analysis of homo- and hetero-nuclear coupling information together with NOE data defining local geometries allowed, in a second step, the selection of the most probable conformation. The structure corresponds to the lowest energy structure proposed by computational methods alone. Its ring structure is in excellent agreement with the x-ray ring structure of the closely related cembrenene.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
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