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  • 1
    Electronic Resource
    Electronic Resource
    Equivalence of a magnetohydrodynamic fluid and a viscous fluid with heat flux (1985)
    College Park, Md. : American Institute of Physics (AIP)
    Journal of Mathematical Physics 26 (1985), S. 2840-2846 
    Details
    ISSN: 1089-7658
    Source: AIP Digital Archive
    Topics: Mathematics , Physics
    Notes: In this paper the equivalence between a perfect fluid with electromagnetic field and a viscous fluid with heat flux is considered. Heat flux, shear tensor, and other fluid parameters are readily calculated out of the magnetohydrodynamic fluid parameters.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.526709
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  • 2
    Electronic Resource
    Electronic Resource
    Time Resolution of Electronic Transitions of Photosynthetic Reaction Centers in the Infrared (1994)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 98 (1994), S. 5778-5783 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100073a035
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  • 3
    Electronic Resource
    Electronic Resource
    Two singular points finite elements in the analysis of kinked cracks (1991)
    Springer
    Computational mechanics 7 (1991), S. 329-339 
    Details
    ISSN: 1432-0924
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract A formulation for incorporating two singular points (TSP) of variable orders in a single finite element is presented. Though the element does not satisfy any of the convergence criterion, its performance is found to be good, which has been demonstrated by considering number of examples on kinked cracks. In each case only one such element is incorporated in the whole discretization. These examples illustrate the usefulness of the element to analyse kinked cracks of various sizes and shapes and subjected to different loading and boundary conditions. Computed J-integrals are compared with analytical solutions, wherever possible, and the accuracy appears quite good. Effect of size of the element on, and the path independence of, J are also examined.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00350162
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  • 4
    Electronic Resource
    Electronic Resource
    New block copolymers V. Synthesis, characterization and morphological studies of poly(pentamethylene terephthalate)-b-(acrylonitrile butadiene rubber) (1988)
    Springer
    Colloid & polymer science 266 (1988), S. 601-607 
    Details
    ISSN: 1435-1536
    Keywords: Block copolymer ; morphology ; glass transition temperature ; amine-terminated acrylonitrile-butadiene rubber ; acrylnitrile-butadiene-rubber
    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 A block copolymer was prepared by low temperature polycondensation between (acid chloride)-terminated poly(pentamethylene terephthalate) as the hard block, and amine-terminated acrylonitrile-butadiene rubber, as the soft block. The polymer was characterized by nitrogen analysis, IR and NMR spectroscopy. The polymer showed two glass transition temperatures (T g ) and exhibited two-phase morphology.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01411499
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  • 5
    Electronic Resource
    Electronic Resource
    Studies on cross-linkable copolyimides (1990)
    Springer
    Colloid & polymer science 268 (1990), S. 901-910 
    Details
    ISSN: 1435-1536
    Keywords: Copolyamides ; synthesis ; cross-linking ; thermal analysis ; thermaldegradation ; solubility
    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 Some new flexible and cross-linkable copolyimides containing rubbery unsaturated aliphatic chain moiety (CPLA) were prepared by low temperature polycondensation betweenm-phenylene diamine,bis- 3(4 carboxy phthalimido) benzene, and liquidα,Ω bis [2-(4 piperazinyl) ethyl aminocarbonyl] poly-(butadiene-co-acrylonitrile) (ATBN) in (DMAC) solution. The effect of rubbery aliphatic moiety in these copolyimides on the polymer properties has been reported. A comparative study on the properties of these copolyimides (CPLA) with the mixture of ATBN and a low molecular-weight cross-linkable copolyimide possessing the same molecular structure as the aromatic moiety of CPLA polymers has been made.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01469368
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  • 6
    Electronic Resource
    Electronic Resource
    Phosphorus containing polymers. Part 5. Polyazoxyphosphonate (1994)
    Springer
    Colloid & polymer science 272 (1994), S. 1203-1207 
    Details
    ISSN: 1435-1536
    Keywords: Polyazoxyphosphonate ; XPS-L01 ; 31P-NMR ; Flame retardancy
    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 A new polyazoxyphosphonate was synthesized by reaction of 4-4′-dihydroxyazoxybenzene and dichlorophenyl phospine oxide by interfacial polycondensation using a phase transfer catalyst. The polymer was characterized and the results obtained by various analytical techniques indicate that it is mostly amorphous, low molecular weight and soluble in organic solvents such as DMF, DMAC, NMP, etc. The high char residue (∼40%) and limiting oxygen index indicate flame retardancy of the polymer which is due to phosphorus. Thermal stability of this polymer is moderate. TheT g appears to be at 152°C.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00657771
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  • 7
    Electronic Resource
    Electronic Resource
    Studies on polypropylene composites filled with talc particles (1992)
    Springer
    Journal of materials science 27 (1992), S. 4605-4613 
    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 Tensile and impact properties of talc-filled isotactic polypropylene composites are investigated at 0–60 wt% filler contents. Tensile modulus registered an increase whereas tensile yield strength and strain-at-break decreased with increasing filler content. Mechanical restraint imposed by the talc particles on the molecular mobility or deformability of polypropylene explained the increase in modulus and decrease in strain-at-break while decrease in tensile yield strength was attributed to decreased crystallinity and formation of stress concentration points around the filler particles. Izod impact strength decreased with increased talc content. Surface modification of talc with a titanate coupling agent LICA 38 enhanced the filler-polymer interaction, further modifying the composite properties consequent upon significant decrease in the stress concentration. Scanning electron microscopic studies revealed better dispersion of surface-modified filler particles in the polymer matrix.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01165994
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  • 8
    Electronic Resource
    Electronic Resource
    Synthesis of a poly(terephthaloylphosphine) (1992)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 199 (1992), S. 1-6 
    Details
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Poly(phenylphosphindiylterephthaloyl), ein neues phosphorhaltiges Polymeres, wurde durch Lösungspolykondensation von Dilithium(phenyl)phosphin mit Terephthaloylchlorid bei niedriger Temperatur hergestellt. Es ist in polaren aprotischen Lösungsmitteln löslich; die inhärente Viskosität in DMF bei 30°C beträgt 19 ml/g. Das Polymere wurde mittels Elementaranalyse sowie IR- und 1H-NMR-Spektroskopie charakterisiert. TGA-Messungen ergeben, daß das Polymere in Luft bis 250°C stabil ist; es ist selbstverlöschend.
    Notes: Poly(phenylphosphinediylterephthaloyl), a novel phosphorus-containing polymer, was synthesized by low-temperature solution polycondensation of dilithio(phenyl)-phosphine with terephthaloyl chloride. The resulting polymer is soluble in polar aprotic solvents, having inherent viscosity of 19 ml/g in DMF at 30°C. The polymer was characterized by elemental analysis, IR and 1H-NMR spectroscopy. TGA data show that the polymer is stable up to 250°C in air. The polymer was found to be self-extinguishing.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1992.051990101
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  • 9
    Electronic Resource
    Electronic Resource
    An approximate analytical method for the prediction of unstable path of cracks with concentrated collinear forces on its faces (1988)
    Springer
    International journal of fracture 38 (1988), S. R3 
    Details
    ISSN: 1573-2673
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00034277
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  • 10
    Electronic Resource
    Electronic Resource
    Stress analysis of cracks of arbitrary shape in finite plate subjected to uniform tension (1988)
    Springer
    International journal of fracture 37 (1988), S. R27 
    Details
    ISSN: 1573-2673
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00041717
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