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  • Inorganic Chemistry  (3)
  • Analyse von Aminosäuren undα-Ketosäuren  (1)
  • Anterior cruciate insufficiency  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Arthroscopy of the knee without pathological findings (1994)
    Springer
    Knee surgery, sports traumatology, arthroscopy 2 (1994), S. 85-87 
    Details
    ISSN: 1433-7347
    Keywords: Anterior knee pain ; Anterior cruciate insufficiency ; Hypermobility ; Limited hip range of movement
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Sports Science
    Notes: Abstract From 1983 to 1990, 82 knee arthroscopies (8.2%) carried out in our patients found nothing pathological. Sixty-four percent of these patients were active in sports, but trauma was noted in 32% of the cases only. Football and other ball games, skiing, and track and field athletics were the main causes. Twenty-six percent of the patients had undergone previous surgery in the affected knee. At a mean of 4.6 years postoperatively, clinical and radiological re-assessment was conducted so as to compare our pre- and intraoperative findings with the further course of events. We found that 48.2% of the patients were symptom-free after the diagnostic arthroscopy, 37.5% had persistent discomfort and 14.3% had a recurrence of discomfort after 6 months to 2 years. The objective measurement score (Zarins Rowe score), at 47.5 out of 50 points, was better than the subjective score, at 40 out of 50 points. Our diagnoses had to be changed retrospectively: meniscal lesions were diagnosed too frequently, while chondropathia patellae and instability were often missed. Additionally, complaints could be related to abnormal axis, limited range of motion of the hip or knee, leg length inequality and hypermobility. Being unable to verify a presumed intra-articular lesion arthroscopically is frustrating for both doctor and patient. Our data suggest that meniscal signs should be looked at more critically and emphasise the need for a complete evaluation of the whole locomotor system.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01476478
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  • 2
    Electronic Resource
    Electronic Resource
    Flüssigkeits-Chromatographie von Pyridoxylaminosäuren. Neues Verfahren der automatisierten Analyse von Aminosäuren im Pikomol-Bereich (10−12 Mol) (1972)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 261 (1972), S. 337-342 
    Details
    ISSN: 1618-2650
    Keywords: Analyse von Aminosäuren undα-Ketosäuren ; Chromatographie ; Ionenaustausch ; Pyridoxylderivate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Zur Analyse von Aminosäuren werden deren Pyridoxylderivate hergestellt und durch Flüssigkeits-Chromatographie getrennt. Die Bestimmung im Eluat erfolgt über die UV- oder Fluorescenzspektren oder durch Aktivitätsmessung, wenn radioaktives NaBT4 bei der Darstellung verwendet wird. Diese letzte Methode ist die empfindlichste. Die Empfindlichkeit kann bis zu 10−13 Mol gesteigert werden (Fehler ± 5%). Das Verfahren kann ebenfalls für die Analyse vonα-Ketosäuren eingesetzt werden.
    Notes: Abstract The synthesis of pyridoxyl-amino acids and their separation by liquid chromatography is described. The determination of the compounds in the eluate can be performed optically via the UV- or fluorescence spectra or radiochemically by activity measurement when radioactive NaBT4 is used in the preparation. The latter method is the most sensitive one. Sensitivity can be increased up 10−13 Mol (error ± 5%). The procedure described can also be applied to the separation and determination ofα-keto acids.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00786991
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  • 3
    Electronic Resource
    Electronic Resource
    Photoredoxreaktionen an Mono-oxalato-bisphenanthrolin-kobalt(III)-Komplexen im festen Zustand (1976)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 422 (1976), S. 65-74 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On Light Induced Redox Reactions of Mono-oxalate-bis(phenanthroline) Cobalt(III) Complexes in Solid StatePhoto redox reactions on complexes of the type [Co(phen)2ox]X · n H2O (phen = 1,10 phenanthroline, ox = C2O4-; X- = F, Cl, Rr, I, HCOO, C3H7COO, ClO4; n = 1-3) are discussed. They are initiated from irradiations in the 350 nm region. Thin layers of the compounds and KBr pellets of the complexes were photolyzed and quantum yield values were determined by IR-spectroscopic or analytical determination of concentration. Quantum yield values were found to be dependent on different anions X in the second coordination sphere. The brutto reactions mere characterized analytically and by spectroscopic methods and magnetic measurements. The products of photolysis were identified. A mechanism of light induced reactions is proposed on base of stoichiometry of the reactions and of identification of oxalate anion radicals by EPR.
    Notes: Es wird über Photoredoxreaktionen an Komplexen des Typs [Co(phen)2ox]X · nH2O (phen = 1,10-Phenanthrolin, ox = C2O4-; X- = F, Cl, Br, J, HCOO, C3H7COO, ClO4; n = 1-3) im festen Zustand berichtet, die durch Einstrahlung bei 350 nm ausgelöst werden. Durch Photolyse an dünnen Schichten und in KBr-Preßlingen wurden die Quantenausbeuten der Photoredoxreaktionen über naßanalytische bzw. IR-spektroskopische Konzentrationsermittlung in Abhängigkeit von unterschiedlichen Anionen X ermittelt. Der Bruttoumsatz der Photolysereaktionen wurde analytisch, mittels spektroskopischer Methoden sowie magnetochemisch bestimmt und die Endprodukte wurden identifiziert. Auf Grund der Stöchiometrie der Reaktion und dem EPR-spektroskopischen Nachweis von Oxalatanionradikalen wird ein Mechanismus für den Ablauf der Reaktion vorgeschlagen.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19764220109
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  • 4
    Electronic Resource
    Electronic Resource
    Über den Einfluß nichtkoordinierter Anionen auf das thermische Verhalten von Mono-oxalato-bis-phenanthrolin-kobalt(III)-Komplexen (1976)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 425 (1976), S. 81-90 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The Influence of Non-coordinated Anions on Thermal Behaviour of Mono-oxalato-bis-phenanthroline-cobalt (III) ComplexesThe thermal redox reactions of coordination compounds from type [Co(phen)2ox]X · nH2O (phen = 1.10-phenanthroline; ox = oxalate; X- = F, CI, Br, J, HSO4, SCN, OCN, NO3, CIO4, RCOO; n = 1-4) were studied by thermomagnetic, thermogravimetric and DSC methods. The results show dependence of the thermal stability of these mixed-ligand complexes on various anions X in the second coordination sphere. From results of thermal composition the complexes investigated can be ordered in view of their different thermal stability. The stoichiometry for several complexes has been examined on basis of their gaseous and solid products and reasons for anion depending behaviours are discussed.
    Notes: Thermoinduzierte Redoxreaktionen von Komplexverbindungen des Typs [Co(phen)2ox]X · nH2O (phen = 1.10-Phenanthrolin; ox = Oxalat; X-=F, Cl, Br, J, HSO4, H2PO4, SCN, OCN, NO3, CIO4, RCOO; n = 1 bis 4) wurden thermomagnetisch, thermogravimetrisch sowie mittels DSC-Messungen untersucht. Der Ablauf der Thermoredoxreaktionen dieser Komplexe im festen Zustand wird wesentlich vom Anion X in der zweiten Koordinationssphäre bestimmt. Entsprechend der unterschiedlichen Wirksamkeit der Anionen können die Komplexverbindungen hinsichtlich ihrer thermischen Stabilität geordnet werden. Auf Grund spektroskopischer und elementar-analytischer Untersuchungen der Thermolyseprodukte können die Bruttoreaktionsgleichungen der Thermoredoxreaktionen formuliert und mögliche Ursachen für das anionenabhängige Verhalten diskutiert werden.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19764250110
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  • 5
    Electronic Resource
    Electronic Resource
    Zur Konstitution von Bis-(phenanthrolin)-kobalt(II)-Komplexen (1975)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 412 (1975), S. 141-147 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On Bis(phenanthroline) cobalt(II) ComplexesSpectrophotometric investigations of [Co(phen)2X2] complexes in the IR and UV/VIS region are described. The results of this investigations show cis octahedral arrangement of the ligands. From the v1- and v3-transitions of the electronic spectra the LF parameters B and Dq are calculated and from this the two electron transition v2 is estimated. [Co(phen)2X2] complexes show symmetry equilibria between octahedral and tetrahedral forms in solutions by reason of complex disproportionation reactions. The green form of the chloride complex could be isolated and identificated as [Co(phen)Cl2].
    Notes: IR- und elektronenspektroskopische Untersuchungen an [Co(phen)2X2]-Komplexen (X=F-, Cl-, Br-, J-, NCS-, NCO-, NO3-, SO4--, ClO4-, HCOO-, H3CCOO-, H5C2COO-, n-H7C3COO- und Salicylat) wurden zur weiteren Charakterisierung dieses Koordinationstyps durchgeführt. Die Untersuchungsergebnisse deuten auf cis-oktaedrische Ligandenanordnung in diesen Verbindungen hin. Aus den v1- und v3-Übergängen der Elektronenspektren wurden die Ligandenfeldparameter B und Dq berechnet sowie die Lage des Zweielektronenübergangs v2 bestimmt. Die [Co(phen)2X2]-Verbindungen unterliegen in Lösung Symmetriegleichgewichten zwischen pseudooktaedrischer und -tetraedrischer Ligandenanordnung, die auf Komplexdisproportionierung zurückzuführen ist. Die grüne Form des Chloridkomplexes konnte isoliert und als [Co(phen)Cl2] identifiziert werden.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19754120206
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