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  • 1990-1994  (3)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of thermal analysis and calorimetry 36 (1990), S. 1457-1463 
    ISSN: 1572-8943
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Es wurden zwei feste Kupfer(II)-phenoxyacetate (wasserfrei und Dihydrat) hergestellt und mittels DSC- und TG-Techniken untersucht. Die erhaltenen Ergebnisse zeigen, da\ die Wassermoleküle des Dihydrates schwach und unterschiedlich gebunden sind. Sowohl die wasserfreie Verbindung als auch das Dihydrat zersetzen sich unter Bildung von CuO als Endprodukt, jedoch über unterschiedliche Schritte. Bezüglich des untersuchten thermischen Prozesses wurden einige thermodynamische Grö\en ermittelt und die erhaltenen Ergebnisse ausgewertet und interpretiert.
    Notes: Abstract Two solid copper(II) phenoxyacetates (anhydrous and dihydrate) were prepared and investigated by DSC and TG techniques. The results obtained indicated that the water molecules of the dihydrate compounds were weakly and differently bonded; also, both anhydrous and dihydrate compound decomposed with formation of CuO as final product, but by different steps. Some thermodynamic parameters associated with the observed thermal processes were evaluated and the results obtained were discussed and interpreted.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Journal of thermal analysis and calorimetry 39 (1993), S. 221-227 
    ISSN: 1572-8943
    Keywords: complexes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Mittels DSC und TG wurden Co(II)- und Ni(II)-phenoxyacetat als Feststoffe untersucht. Die Ergebnisse zeigten, daß es sich dabei im festen Zustand um das Di- bzw. Tetrahydrat handelt. Für die Lokalisation der Wassermoleküle in den verschiedenen Koordinationssphären konnten keine Beweise erbracht werden. Beide Verbindungen zersetzen sich unter der Bildung des Oxides als Endprodukt; die entsprechenden Aktivierungsenergien scheinen auf eine stärkere Metall-Carboxylat-Bindung im Nickelsalz schließen zu lassen.
    Notes: Abstract Solid Co(II) and Ni(II) phenoxyacetates were studied by DSC and TG techniques. The results showed that they were dihydrate and tetrahydrate respectively in the solid state. No evidence of the location of water molecules in different coordination shells was obtained. Both compounds decomposed with the formation of oxide as final product; the corresponding activation energies suggested a stronger metal-carboxylate bond in the nickel salt.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Neurological sciences 15 (1994), S. 145-149 
    ISSN: 1590-3478
    Keywords: cerebral ischemia ; etiology ; cardiopathy ; foramen ovale ; paradoxical ; embolism ; young ; echocardiography ; contrast
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Sommario La prevalenza della pervietà del forame ovale (PFO) è stata studiata, per mezzo della Eco-cardiografia transtoracica con iniezione di mezzo di contrasto, in una serie continua di 48 pazienti di età inferiore ai 50 anni, affetti da episodi acuti di ischemia cerebrale focale. La presenza di PFO è stata dimostrata in 11 soggetti (23%). Nel gruppo dei più giovani (sotto i 30 anni) la prevalenza di questa anomalia cardiaca è risultata molto più alta che in quello dei più anziani (58% contro 11%, p=0,0022). Inoltre, non vi era alcun caso di PFO tra i 19 soggetti in cui è stata dimostrata una evidente causa extracardiaca del disturbo cerebrovascolare, mentre la PFO era presente nel 38% degli altri 29 casi (p=0.0015). In conclusione, la presenza di PFO deve essere ricercata con cura nei pazienti cerebrovascolari ischemici di età inferiore a 30 anni così come in quelli tra i 30 ed i 50 in cui non sia dimostrabile una verosimile causa dell'episodio ischemico cerebrale.
    Notes: Abstract By means of transthoracic contrast echocardiography, the prevalence of a patent foramen ovale (PFO) was studied, in a continuous series of 48 patients aged less than 50 years with a recent episode of acute cerebral ischemia. A PFO was found in 11 subjects (23%). In the subgroup of younger patients (aged less than 30 years), the prevalence was much higher than in those aged 30 or more (58% against 11%, p=0.0022). In the 19 patients with clear evidence of extracardiac causal factors of cerebral ischemia, there was no PFO; of the remaining 29 subjects, a PFO was present in 11 (38%) (p=0.0015). In conclusion, the possibile presence of a PFO must be carefully investigated in subjects with cerebral ischemia aged less than 30, as well as in subjects aged between 30 and 50 in whom there is no acceptable explanation for their cerebral ischemic episode.
    Type of Medium: Electronic Resource
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