ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    ISSN: 0173-2803
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 2
    ISSN: 0173-2803
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 67 (1995), S. 1159-1160 
    ISSN: 0009-286X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 4
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 243 (1888), S. 307-313 
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 556 (1944), S. 38-50 
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 6
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 385 (1911), S. 352-358 
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 7
    Electronic Resource
    Electronic Resource
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 95 (1966), S. 179-186 
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Mit Hilfe von Modellverbindungen - Derivaten von endo- und exo-Dicyclopentadien - wird nachgewiesen, daß:(a) die 9,10-Doppelbindung (die Doppelbindung im Norbornan-Ring) an der Polymerisation von Dicyclopentadien mit Äthylen und Propylen beteiligt ist.(b) Dicyclopentadien, das im Polymerisationsgemisch in der endo-Konfiguration vorhanden ist, in der Polymerkette in der exo-Konfiguration vorkommt.Dieselben Modellverbindungen ermöglichen die Bestimmung des DCPD-Gehalts der Äthylen-Propylen-DCPD-Terpolymeren durch IR-Analyse. Es wird die Bande bei 3045cm-1 benutzt, die für endo-cyclische Doppelbindungen in fünfgliedrigen Ringen charakteristisch ist.
    Notes: With the aid of model compounds - derivatives of endo- and exo-dicyclopentadiene - it has been established that:(a) the 9,10-double bond (the double bond in the norbornane-ring) is involved in the polymerization of dicyclopentadiene with ethylene and propylene;(b) dicyclopentadiene, present in the polymerization mixture in the endo-configuration, occurs in the exo-configuration in the polymer chain.The same model compounds enable the DCPD-content of ethylene-propylene-DCPD terpolymers to be determined by infrared-spectroscopic methods. Use is made of the 3045 cm-1 band, which is characteristic of endo-cyclic double bonds in five-membered rings.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 8
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: If low molar mass mesogenic molecules, which are able to form a liquid crystalline phase, are linked as side groups to a polymer main chain, a new class of polymeric substances with liquid crystalline behaviour is obtained. Nematic, smectic and cholesteric elastomers have been synthesized. The new material is marked by a new combination of liquid crystalline and elastomer specific properties. Above the glass temperature, Tg, the substances are rubber-elastic. Starting from the elastomer in the optical isotropic state, a first order phase transformation into the liquid crystalline state is obtained by decreasing the temperature. By further cooling the liquid crystalline elastomer is converted into an anisotropic liquid crystalline glass.The thermoelastic and optoelastic properties of the networks have been investigated by uniaxial deformation (compression, elongation) and birefringence measurements. Above the transformation point nematic-isotropic, Tn-i, the thermoelastic behaviour is the same as for usual elastomers. However, when the transformation temperature is reached, the nominal stress decreases rapidly. If one passes to temperatures below the transformation temperature by maintaining the deformation of the network, the liquid crystalline order is built up in a sample having a preferential direction. This is the reason for the unusual stress-temperature behaviour observed.Stress optical measurements above Tn-i show a considerable temperature dependence, which is untypical for common rubbers. The steep increase of the stress optical coefficient, some 20 k above Tn-i, indicates that there are marked pretransformational effects. The sign of the birefringence indicates the orientation of the mesogenic side groups with respect to the axis of deformation or to the direction of the polymer backbone, respectively.In the LC state the investigations of the LC elastomers by X-ray diffraction- and polarizing microscopic measurements lead to same results with respect to the orientation of the mesogenic side groups in the deformed networks. It is remarkable that the results depend on the length of the flexible spacer between the mesogenic side groups and the polymer backbone.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 9
    Electronic Resource
    Electronic Resource
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 21 (1992), S. 672-674 
    ISSN: 1052-9306
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A mass spectrometric method for the analysis of aziridines and their 2-chloroethylamine precursors is described. These compounds are characterized by their highly labile interconvertible nature. The capabilities of electron impact and fast atom bombardment (FAB) mass spectrometry as ionizaton techniques for structure confirmation studies were explored. A new technique using FAB mass spectrometry to distinguish between an aziridine and its open-chain precursor is described.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
  • 10
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 12 (1981), S. 160-167 
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Separation of Acoustic Emission Signals by Computerized AnalysesFeatures extracted from acoustic emission signals by means of different analysis methods can be evaluated by the application of pattern recognition computer programs. By these methods it can be established, whether the employed features - maximum amplitude, signal rise time, pulse sum, pulse area, pulse energy and mean amplitude as well as simple characteristics of frequency spectra - are capable to distinguish acoustic emission signals or whether combinations of features lead to better results when single features fail.The efficiency of different analyses and the pattern recongnition programs is examined by four simulated types of signals. According to the employed analysis method there are distinct differences regarding the separation of acoustic emission. However, by applying feature combinations signal groups not separable by single analysis methods can be distinguished.
    Notes: Merkmale, die mit Hilfe verschiedener Analyseverfahren aus Schallemissionssignalen gewonnen werden, können durch den Einsatz von Rechenverfahren zur Mustererkennung bewertet werden. Durch Anwendung dieser Programme kann festgestellt werden, ob die verwendeten Merkmale - maximale Amplitude, Signalanstiegszeit, Schallsumme, Impulsfläche, Impulsenergie und mittlere Amplitude sowie einfache Kenngrößen aus Frequenzspektren - die Schallemissionssignale trennen können oder ob für den Fall, daß ein einzelnes Merkmal diese Aufgabe nicht löst, eine Kombination von Merkmalen zu einem besseren Ergebnis führt.Die Möglichkeiten der verschiedenen Analysen sowie der Mustererkennungsprogramme werden anhand von vier simulierten Signalarten überprüft. Je nach Analyseverfahren ergeben sich dabei deutliche Unterschiede hinsichtlich der Trennung der Schallemissionen. Jedoch kann selbst bei Signalgruppen, die mit einem Analyseverfahren nicht getrennt werden können, durch die Anwendung von Merkmalskombinationen die Unterscheidung verbessert werden.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...