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  • 1
    Electronic Resource
    Electronic Resource
    Unsaturated macrocyclic compounds. LXXXIX. Dianion of [18]annulene (1973)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 95 (1973), S. 7337-7345 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja00803a022
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Chemical interactions in blends of bisphenol A polycarbonate with tetraglycidyl-4,4'-diaminodiphenylmethane epoxy (1995)
    s.l. : American Chemical Society
    Macromolecules 28 (1995), S. 6779-6786 
    Details
    ISSN: 1520-5835
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ma00124a012
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Relationships between ringed spherulitic morphology and miscibility in blends of poly(ɛ-caprolactone) with poly(benzyl methacrylate) versus poly(phenyl methacrylate) (2000)
    Springer
    Colloid & polymer science 278 (2000), S. 1032-1042 
    Details
    ISSN: 1435-1536
    Keywords: Key words Spherulites ; Ring bands Interactions ; Miscibility ; Poly(ɛ-caprolactone)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract  Ringed spherulites are an interesting phenomenon that is observed only in very few miscible systems. For the first time, the relationship between the state of chain intermixing and the ring-band pattern was demonstrated. Two previously demonstrated miscible blend systems, poly(ɛ-caprolactone) (PCL) with poly(benzyl methacrylate) (PBzMA) and PCL with poly(phenyl methacrylate) (PPhMA), were studied in order to understand the mechanism of ring-band formation in the spherulites and the relationships between the ring-band pattern and the state of miscibility. In both miscible PCL/PBzMA and PCL/PPhMA systems, extinction rings were observed within the PCL spherulites. In the PCL/PBzMA blend, the extinction rings are not as distinct (owing to distortion) as those in the PCL/PPhMA blend system. Analysis was performed and discussions were made to reveal relationships between miscibility, interaction strength, and the pattern of the ring bands in the PCL spherulites in polymeric mixtures.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003960000355
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Sub-Tg molecular relaxation and enthalpy relaxation behavior in amorphous glassy poly(ether imide) (1997)
    Springer
    Journal of polymer research 4 (1997), S. 213-219 
    Details
    ISSN: 1572-8935
    Keywords: Physical aging ; PEI ; Enthalpy relaxation ; Sub-Tg molecular relaxation ; Dynamic mechanical analysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Physical aging behavior of glassy, amorphous poly(ether imide) (PEI) at a high aging temperature range (15 ∼ 25 °C below the polymer Tg of 215 °C) was investigated. A quantitative modeling approach was utilized to describe the aging process of PEI. The experimental data of enthalpy of relaxation for constructing the models were obtained using differential scanning calorimetry (DSC). At relatively low aging temperatures, the enthalpy of relaxation simply increases linearly with the logarithm of time. At high temperatures another parameter accounting for distribution is needed for better description. Furthermore, the sub-Tg molecular chain relaxation of aged PEI was characterized using dynamic mechanical analysis (DMA). Physical aging significantly suppressed the β chain relaxation but not the γ-relaxation, suggesting that the chain segmental motion for the β-relaxation is the one responsible for chain conformation changes reaching an equilibrium glassy state.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s10965-006-0027-x
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  • 5
    Electronic Resource
    Electronic Resource
    Reversibility of thermodynamic lower critical solution temperature phenomenon in miscible poly(ε-caprolactone)/poly(benzyl methacrylate) (1998)
    Springer
    Journal of polymer research 5 (1998), S. 205-211 
    Details
    ISSN: 1572-8935
    Keywords: Polycaprolactone ; Poly(benzyl methacrylate) ; Miscibility ; LCST ; Reversibility ; Binodal
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Differential scanning calorimetry and optical microscopy were performed to examine the reversibility of phase separation at above the lower critical solution temperatures in a miscible poly(ε-caprolactone) (PCL)/poly(benzyl methacrylate) (PBzMA) blend system. Upon heating, phase separation occurred via a binodal nucleation and growth (NG) mechanism at above 240 °C, which is a lower critical solution temperature (LCST). The pattern of phase domains suggests that the phase separation was meta-stable. Interestingly, the LCST phase separation was found to be readily reversible to original homogeneity upon cooling at regularly accessible rates. A major factor may be that the temperature window between the LCST curve and blend Tg curve is wide, resulting in a convenient temperature range for the polymer chains to kinetically reorganize to a state favored by the thermodynamic conditions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s10965-006-0058-3
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    The expectation gap in auditing (1998)
    Bingley : Emerald
    Managerial auditing journal 13 (1998), S. 147-154 
    Details
    ISSN: 0268-6902
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Economics
    Notes: There is concern that auditors and the public hold different beliefs about the auditors' duties and responsibilities and the messages conveyed by audit reports. In recent years, some spectacular and well-publicised corporate collapses and the subsequent implication of the reporting auditors have highlighted the audit expectation gap. Apparently, public misperceptions are a major cause of the legal liability crisis facing the accounting profession. Given the significance of the expectation gap, it is not surprising therefore that prior research on the expectations problem is substantial. The objective of this paper is to review the literature on the audit expectation gap along the following lines: definition of the expectation gap; nature and structure of the expectation gap; and ways to reduce the expectation gap. It is hoped that such an attempt can provide insights into the audit expectation gap.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1108/02686909810208038
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    CT appearance in hypertensive encephalopathy (1987)
    Springer
    Neuroradiology 29 (1987), S. 215-215 
    Details
    ISSN: 1432-1920
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00327557
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    Paper (German National Licenses)
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  • 8
    Electronic Resource
    Electronic Resource
    Dystrophic intracranial calcification: CT evidence of ‘cerebral steal’ from arteriovenous malformation (1987)
    Springer
    Neuroradiology 29 (1987), S. 519-522 
    Details
    ISSN: 1432-1920
    Keywords: Intracranial calcification ; Arteriovenous malformation ; Cerebral steal ; Steal phenomenon
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Two cases of dystrophic intracranial calcification due to arteriovenous malformations (AVM) are reported. The characteristic distribution is in the watershed areas and away from the AVM. Deposition of calcium on ischaemic brain tissues as a result of ‘cerebral steal’ by the AVM is the probable pathogenetic mechanism.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00350433
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    Paper (German National Licenses)
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  • 9
    Electronic Resource
    Electronic Resource
    Bulbar palsy aggravated by metrizamide CT cisternography (1987)
    Springer
    Neuroradiology 29 (1987), S. 219-219 
    Details
    ISSN: 1432-1920
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00327561
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    Paper (German National Licenses)
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  • 10
    Electronic Resource
    Electronic Resource
    Characterization of epoxy-bismaleimide network matrices (1987)
    Springer
    Journal of materials science 22 (1987), S. 3665-3671 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract This study investigated intercrosslinked networks formed by co-curing two thermosets: a tetrafunctional epoxy/amine and a bismaleimide formulation. The mechanical properties and phase behaviour of the intercrosslinked networks were compared with the corresponding neat epoxy and bismaleimide systems. In addition, the reaction scheme of the epoxy-bismaleimide resin mixtures was investigated using differential scanning calorimetry. A homogeneous structure for the networks was suggested by the results of both dynamic mechanical analysis and scanning electron microscopy. In contrast to most epoxy systems modified with rubbers or thermoplastics, phase separation was not observed in these intercrosslinked epoxy-bismaleimide networks.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01161475
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