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  • 1
    Electronic Resource
    Electronic Resource
    Oxidation of cysteine, cysteine methyl ester, and penicillamine by copper(II)-2,9-dimethyl-1,10-phenanthroline complexes (1984)
    s.l. : American Chemical Society
    Inorganic chemistry 23 (1984), S. 2777-2780 
    Details
    ISSN: 1520-510X
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ic00186a013
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  • 2
    Electronic Resource
    Electronic Resource
    Anation of laccase type 2 copper by azide and thiocyanate ions (1982)
    s.l. : American Chemical Society
    Biochemistry 21 (1982), S. 4403-4407 
    Details
    ISSN: 1520-4995
    Source: ACS Legacy Archives
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/bi00261a032
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  • 3
    Electronic Resource
    Electronic Resource
    Utility based framework for material and process selection in the integrated chain management of polymers (2001)
    Bingley : Emerald
    Environmental management and health 12 (2001), S. 277-285 
    Details
    ISSN: 0956-6163
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Medicine , Economics
    Notes: This paper presents a framework for modelling polymer material flows through industrial processes with a focus on the recovery, re-use and recycling of waste polymer materials within a life cycle approach. This is achieved by comparison of material characteristics at all points in the system with defined requirements or options. Conditional criteria are implemented as direction indicators that drive the flow towards feasible process operations and successful application in the use phase across many life cycles.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1108/09566160110392362
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  • 4
    Electronic Resource
    Electronic Resource
    Record of mid-Archaean subduction from metamorphism in the Barberton terrain, South Africa (2006)
    [s.l.] : Nature Publishing Group
    Nature 442 (2006), S. 559-562 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Although plate tectonics is the central geological process of the modern Earth, its form and existence during the Archaean era (4.0–2.5 Gyr ago) are disputed. The existence of subduction during this time is particularly controversial because characteristic subduction-related mineral ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/nature04972
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  • 5
    Electronic Resource
    Electronic Resource
    Evaluating failure in the innovation process: the micropolitics of new product development (1999)
    Oxford, UK and Boston, USA : Blackwell Publishers Ltd
    R & D management 29 (1999), S. 0 
    Details
    ISSN: 1467-9310
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Economics
    Notes: For almost 40 years academics from a wide range of disciplinary backgrounds have sought to improve our understanding of the innovation process. In this paper, we examine the contribution made by those such as Kotler who have attempted to describe a rational approach to New Product Development (NPD). We argue that such frameworks offer a view of organisational activity which substantially understates the political activity associated with managing the innovation process. Most of those writing from a marketing perspective acknowledge external political influences such as government policies and the leverage of ‘special interest groups’. We focus on the work of Burns and Stalker who clearly recognised the way in which internal political struggles to access resources or to improve career prospects impact on innovation. To analyse the role of micropolitics in the NPD process we describe the case of WEL, a medium-sized manufacturing firm, as managers and engineers attempted to develop an important new product. We conclude that it is essential to incorporate the role of internal politics into any framework which claims to offer a realistic account of NPD.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/1467-9310.00127
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  • 6
    Electronic Resource
    Electronic Resource
    Melt production during granulite-facies anatexis: experimental data from “primitive” metasedimentary protoliths (1997)
    Springer
    Contributions to mineralogy and petrology 128 (1997), S. 352-370 
    Details
    ISSN: 1432-0967
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract We conducted fluid-absent partial melting experiments, at 0.5 and 1.0 GPa in the temperature range 750 to 1000 °C, to investigate the influence of bulk rock Mg ? [100Mg/(Mg+Fe)] and the effects of additional TiO2 on the granulite-grade anatectic evolution of relatively magnesian metapelites and metagreywackes. In these experiments, melting began between 780 and 830 °C by the incongruent breakdown of biotite to produce quartz-saturated, granulite-facies residual mineral assemblages in equilibrium with H2O-undersaturated granitic melt. The glass (quenched melt) compositions produced in this study vary little. Generally, the glasses have compositions similar to those of many natural strongly peraluminous leucogranites. The solidus temperatures in both rock types increase with increasing Mg ?, but are unaffected by the presence or absence of a TiO2 component. At 0.5 GPa the metapelites melted at temperatures up to 50 °C lower than the equivalent metagreywackes, but at 1 GPa there was no discernible difference. This study suggests that the fluid-absent solidus has a steep positive dP/dT slope in metapelites and steep negative dP/dT slope in metagreywackes. The pattern of melt production with increasing temperature is strongly controlled by the upper limit of biotite stability. In TiO2-free compositions this was found to increase by 15 to 20 °C in the metapelites and by 30 to 40 °C in the metagreywackes, as a function of increasing Mg ? from 49 to 81. The presence of a TiO2 component increases the upper limit of biotite stability by ∼50 °C in the metapelites and by ∼80 °C in the metagreywackes, over that observed in the equivalent TiO2-free compositions. In consequence, in the TiO2-free samples large pulses of melt (up to 35 wt%) are produced over narrow temperature ranges (as little as 15 °C in these experiments) between 830 and 875 °C. In the TiO2-bearing samples the major pulse of melt production occurs more gradually between 830 and 〉900 °C.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004100050314
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  • 7
    Electronic Resource
    Electronic Resource
    High-grade metamorphism, dehydration and crustal melting: a reinvestigation based on new experiments in the silica-saturated portion of the system KAlO2–MgO–SiO2–H2O–CO2 at P≤ 1.5 GPa (1997)
    Springer
    Contributions to mineralogy and petrology 129 (1997), S. 308-325 
    Details
    ISSN: 1432-0967
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract The system KAlO2–MgO–SiO2–H2O–CO2 has long been used as a model for the processes of granulite-facies metamorphism and the development of orthopyroxene-bearing mineral assemblages through the breakdown of biotite-bearing assemblages. There has been considerable controversy regarding the role of carbon dioxide in metamorphism and partial melting. We performed new experiments in this system (at pressures of 342 to 1500 MPa with T between 710 and 1045 °C and X Fl H2O between 0.05 and 1.00), accurately locating most of the dehydration and melting equilibria in P-T-X Fl H2O space. The most important primary result is that the univariant reaction Phl + Qtz + Fl = En + Sa + melt must be almost coincident with the fluid-absent reaction (Phl + Qtz = En + Sa + melt) in the CO2-free subsystem. In conjunction with the results of previous measurements of CO2 solubility in silicate melts and phase equilibrium experiments, our theoretical analysis and experiments suggest that CO2 cannot act as a flux for partial melting. Crustal melting in the presence of H2O–CO2 mixed fluids will always occur at temperatures higher than with pure H2O fluid present. Magmas produced by such melting will be granitic (s.l.) in composition, with relatively high SiO2 and low MgO contents, irrespective of the H2O–CO2 ratio in any coexisting fluid phase. We find no evidence that lamprophyric magmas could be generated by partial fusion of quartz-saturated crustal rocks. The granitic melts formed will not contain appreciable dissolved CO2. The channelled passage of hot CO2-rich fluids can cause local dehydration of the rocks through which they pass. In rock-dominated (as opposed to fluid-dominated) systems, minor partial melting can also occur in veins initially filled with CO2-rich fluid, as dehydration and local disequilibrium drive the fluid towards H2O-rich compositions. However, CO2 is unlikely to be a significant agent in promoting regional granulite-grade metamorphism, melting, magma generation, metasomatism or long-range silicate mass transfer in Earth's crust. The most viable model for the development of granulite-facies rocks involves the processes of fluid-absent partial melting and withdrawal of the melt phase to higher crustal levels.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004100050339
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  • 8
    Electronic Resource
    Electronic Resource
    Cure kinetics of a high epoxide/hydroxyl group-ratio bisphenol a epoxy resin - anhydride system by infrared absorption spectroscopy (1981)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 26 (1981), S. 4279-4297 
    Details
    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: An infrared absorption spectroscopy study of the curing (gelation and postcure) kinetics of a high (4.7) epoxide/hydroxyl group-ratio diglycidyl ether of bisphenol A (DGEBA)-mixed anhydride epoxy resin system is reported. Peak assignments to molecular vibrational modes are given for the range 400-4000 cm-1, and the optical density behavior of all peaks during reaction is discussed in detail. Chemical reaction was found to follow consecutive-step addition esterification and simultaneous addition etherification. Epoxide hydroxyl-group and carboxylic acid dimer hydrogen bonding was found to occur. The gelation phase of reaction is complex, exhibiting rapid initial hydroxyl-anhydride reactions followed by S-shaped kinetics approaching an incompletely reacted limit. Postcure exhibits functional group kinetic behavior similar to that occurring in low epoxide/hydroxyl group-ratio bisphenol A epoxy resin-phthalic anhydride systems and produces similar final chemical structures. The reaction behavior of low and high epoxide/hydroxyl group-ratio bisphenol A epoxy resin-anhydride systems arises from an hydroxyl group-limited inhomogeneous reaction mechanism involving bisphenol A epoxy resin molecular aggregates. The importance of free hydroxyl group content is discussed.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1981.070261226
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  • 9
    Electronic Resource
    Electronic Resource
    Cure kinetics of a low epoxide/hydroxyl group-ratio bisphenol a epoxy resin-anhydride system by infrared absorption spectroscopy (1981)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 26 (1981), S. 4259-4278 
    Details
    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: An infrared absorption spectroscopy study of the curing kinetics of a low (1.12) epoxide/hydroxyl-group ratio bisphenol A epoxy resin - phthalic anhydride system is reported. A full infrared peak assignment to molecular vibrational modes is given for the range 400 to 4000 cm-1, and the optical density behavior of all peaks during reaction is discussed in detail. Proposed rival reaction mechanisms are considered and their respective kinetic behavior discussed. The reaction was found to follow consecutive-step addition esterification and simultaneous addition etherification, and epoxide - hydroxyl group and carboxylic acid dimer hydrogen bonding was found to occur. The reaction behavior supports a proposed hydroxyl group-limited inhomogeneous bulk reaction mechanism of a colloid type.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1981.070261225
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  • 10
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    Ultralow Energy Ion Beam Surface Modification of Low Density Polyethylene (2005)
    American Chemical Society
    Details
    Publication Date: 2005-12-01
    Print ISSN: 1520-6106
    Electronic ISSN: 1520-5207
    Topics: Chemistry and Pharmacology , Physics
    Published by American Chemical Society
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