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  • Chemistry  (2)
  • -color  (1)
  • 1
    ISSN: 1433-0407
    Keywords: Schlüsselwörter Farbkodierte Duplex-Sonographie ; Fibromuskuläre Dysplasie ; intimale Variante ; A. carotis ; Key words Ultrasonography ; -doppler ; -color ; Fibromuscular-dysplasia-diagnosis ; Carotid-artery-diseases
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary Traditionally, intra-vitam diagnosis of fibromuscular dysplasia (FMD) of brain supplying arteries is a domain of conventional selective angiography. We are aware of only two publications reporting of ultrasound displayed intimal and medial variants of carotid artery FMD, in one case each. We present a patient in whom color-coded duplex-sonography revealed a web-like carotid artery bulb stenosis meeting the specific criteria of a subtype of intimal FMD.
    Notes: Zusammenfassung Die intra vitam Diagnose der fibromuskulären Dysplasie (FMD) hirnversorgender Arterien gilt als eine Domänie der selektiven Katheterangiographie. Bislang liegen nur zwei Mitteilungen über die Diagnose der FMD durch B-Bild- beziehungsweise Duplex-Sonographie der A. carotis vor, eine davon mit Darstellung eines membranösen intimalen Subtyps der FMD. Wir konnten bei einem Patienten die spezifischen Kriterien einer septalen intimalen FMD des Bulbus caroticus Duplex-sonographisch dokumentieren.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 61 (1996), S. 1649-1654 
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: The kinetics of polycondensation of hydroxyfunctional polydimethylsiloxane has been studied with a simple new inexpensive piece of equipment, i.e., the vibrating needle curemeter. The order of reaction with respect to crosslinker and catalyst concentration has been determined to be unity and 0.24, respectively. The activation energy of the reaction has been found to be zero. © 1996 John Wiley & Sons, Inc.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 0044-2313
    Keywords: Mono-, di-, and trinuclear tantalum and tantalum | niobium complexes with P4 and P2 ligands ; m̈-η2:1:1-P2 coordination mode ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Niobium and Tantalum Complexes with P2 and P4 LigandsThe photolysis of [Cp″Ta(CO)4] 1 (Cp″ = C5H3tBu2-1,3) and P4 affords Cp″(CO)2Ta(η4-P4) 2, [{Cp″(CO)Ta}2(m̈-η2:2-P2)2] 3 and [Cp3″(CO)3Ta3(P2)2] 4. In a photochemical reaction 2 and [Cp*Nb(CO)4] 5 form [{Cp*(CO)Nb}{Cp″(CO)Ta}(m̈-η2:2-P2)2] 6 and [{Cp*(CO)2Nb} {Cp*Nb}{Cp″(CO)Ta}(m̈3-η2:1:1-P2)2] 7, a compound with the novel m̈3-η2:2:1-P2-coordination mode. The reaction of 2 and [Cp*Co(C2H4)2] 8 leads to [{Cp*Co} {Cp″(CO)Ta}(m̈-η2:2-P2)2] 9, a heteronuclear complex with an „early“ and a „late“ transition metal. Complexes 2, 3, 7 and 9 have been further characterized by X-ray structure analyses.
    Notes: Die Photolyse von [Cp″Ta(CO)4] 1 (Cp″ = C5H3tBu2-1,3) und P4 ergibt [Cp″(CO)2Ta(η4-P4)] 2, [{Cp″(CO)Ta}2(μ-η2:2-P2)2] 3 und [Cp3″(CO)3Ta3(P2)2] 4. 2 reagiert photochemisch mit [Cp*Nb(CO)4] 5 zu [{Cp*(CO)Nb}{Cp″(CO)Ta}(m̈-η2:2-P2)2] 6 und [{Cp*(CO)2Nb}{Cp*Nb} {Cp″(CO)Ta}(m̈3-η2:1:1-P2)2] 7, einer Verbindung mit der neuen m̈3-η2:2:1-P2-Koordinationsvariante. Die Reaktion von 2 und [Cp*Co(C2H4)2] 8 führt zum heteronuklearen Komplex [{Cp*Co} {Cp″(CO)Ta}(m̈-η2:2-P2)2] 9 mit einem „frühen“ und „späten“ Übergangsmetall. Die Komplexe 2, 3, 7 und 9 wurden zusätzlich durch eine Röntgenstrukturanalyse charakterisiert.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
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