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  • Springer  (302)
  • Oxford University Press  (44)
  • 2000-2004  (122)
  • 1990-1994  (186)
  • 1955-1959  (38)
Collection
Keywords
Publisher
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    Symposium 11: Cellular and molecular basis of atherosclerosis (1990)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 337 (1990), S. 41-43 
    Details
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00325719
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  • 2
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    Symposium 11: Cellular and molecular basis of atherosclerosis (1990)
    Springer
    Details
    Publication Date: 1990-01-01
    Print ISSN: 0937-0633
    Electronic ISSN: 1432-1130
    Topics: Chemistry and Pharmacology
    Published by Springer
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    PAPER CURRENT
  • 3
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    Mantle plumes: heat-flow near Iceland (2003)
    Oxford University Press
    Details
    Publication Date: 2003-02-01
    Print ISSN: 1366-8781
    Electronic ISSN: 1468-4004
    Topics: Geosciences , Physics
    Published by Oxford University Press on behalf of The Royal Astronomical Society.
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    PAPER CURRENT
  • 4
    Electronic Resource
    Electronic Resource
    Determination of the substitution patterns of cellulose methyl ethers by HPLC and GLC-comparison of methods (1992)
    Springer
    Polymer bulletin 29 (1992), S. 349-356 
    Details
    ISSN: 1436-2449
    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: Summary The substitution patterns of methyl cellulose as well as of a thexyldimethylsilyl cellulose after permethylation were determined by hydrolysis and separation of the resulting partially methylated glucoses without further derivatization by h.p.l.c.. On an amine-modified silica column the solutes get separated into glucose, 2,3,6-tri-O-methyl glucose and the groups of mono-O-methyl-and di-O-methyl glucoses. A chromatographic run on a reversed-phase column enables the identification of the single mono-O-methyl- and di-O-methyl glucoses. In this way, a determination of both the average degree of substitution and the substitution pattern of cellulose derivatives is possible. Comparison of the results with those obtained by standard methylation analysis including g.l.c.-m.s. proves the correctnes of the method employed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00944830
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  • 5
    Electronic Resource
    Electronic Resource
    Spatial variability and interpolation of daily precipitation amount (1992)
    Springer
    Stochastic environmental research and risk assessment 6 (1992), S. 209-221 
    Details
    ISSN: 1436-3259
    Keywords: geostatistics ; precipitation ; water balance models ; semivariogram ; kriging ; spatial variation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying , Energy, Environment Protection, Nuclear Power Engineering , Geography , Geosciences
    Notes: Abstract Daily precipitation amounts show spatial variation over sub-continential regions. Point measurements, representative for regions of land, have to be interpolated towards unobserved locations. In this study four days in 1984 were selected to investigate the spatial variability of daily precipitation amount in North-western Europe in relation to the meteorological conditions. Data were interpolated using Kriging. Crossvalidation was used to compare interpolated values with measured values. Large differences in the spatial structure of daily precipitation amount are obsered as a result of different meterological conditions. Stratification of the study area into a coastal, a mountainous and an interior stratum proved to be successful, reducing the Mean Squared Error of Prediction with up to 55%.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01581451
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  • 6
    Electronic Resource
    Electronic Resource
    Spatial variability and interpolation of daily precipitation amount (1992)
    Springer
    Stochastic environmental research and risk assessment 6 (1992), S. 304-320 
    Details
    ISSN: 1436-3259
    Keywords: geostatistics ; precipitation ; water balance models ; semivariogram ; kriging ; spatial variation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying , Energy, Environment Protection, Nuclear Power Engineering , Geography , Geosciences
    Notes: Abstract Daily precipitation amounts show spatial variation over sub-continential regions. Point measurements, represntative for regions of land, have to be interpolated towards unobserved locations. In this study four days in 1984 were selected to investigate the spatial variability of daily precipitation amount in north-western Europe in relation to the meteorological conditions. Data were interpolated using kriging. Crossvalidation was used to compare interpolated values with measured values. Large differences in the spatial structure of daily precipitation amount are observed as a result of different meteorological conditions. Stratification of the study area into a coast, a mountain and an interior stratum proved to be successful, reducing the Mean Squared Error of Prediction with up to 55%.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01581623
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  • 7
    Electronic Resource
    Electronic Resource
    Mechanistic studies of platinum-catalyzed hydrosilylation (1991)
    Springer
    Journal of inorganic and organometallic polymers and materials 1 (1991), S. 325-334 
    Details
    ISSN: 1572-8870
    Keywords: Hydrosilylation ; addition cure ; platinum catalyst
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The results of competitive and relative rate studies for various silicon hydrides and vinylmethylsiloxane compounds are presented. For example, the competitive reaction of bis(trimethylsiloxy)methylsilane with vinylpentamethyldisiloxane (A) and divinyltetramethyldisiloxane (B) show that B reacts preferentially; however, the relative rate of reaction is greater for A than B. Mechanistic aspects of hydrosilylation are also discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00702496
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  • 8
    Electronic Resource
    Electronic Resource
    The network structure of silicone release coatings (1991)
    Springer
    Journal of inorganic and organometallic polymers and materials 1 (1991), S. 591-604 
    Details
    ISSN: 1572-8870
    Keywords: Silicone network structures ; epoxy silicones ; thermal-cure silicones
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Silicone release coatings are used by the pressure-sensitive adhesive industry for labeling applications. A background discussion of silicone release coatings is presented. Methodology for determining the network structure of photolytically cured systems prepared by the cationic ring opening polymerization of an epoxy silicone fluid is described. Under typical polymerization conditions, these networks contain no unreached epoxides and have very low degrees of polymerization (D p), indicating that termination is competitive with propagation. A method has also been developed to determine the network structure of thermally cured systems prepared by the platinum-catalyzed hydrosilylation of silicone vinyl compounds with silicone hydrides. The nature of the cross-links and the types of residual functionality have been determined and the systems have been shown to undergo a postcure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00683519
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  • 9
    Electronic Resource
    Electronic Resource
    On the reaction mechanism for propene formation in the MTO reaction over SAPO-34 (1993)
    Springer
    Catalysis letters 20 (1993), S. 329-336 
    Details
    ISSN: 1572-879X
    Keywords: SAPO-34 ; MTO ; MTG ; hydrocarbon formation from methanol ; reaction mechanism ; isotopic labeling
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Three different feeds: methanol, methanol/ethanol/water (2 ∶ 1 ∶ 1 molar ratio) and13C-methanol/ethanol/water (2 ∶ 1 ∶ 1) have been converted to hydrocarbons over a SAPO-34 catalyst at 420 °C using argon carrier gas. The products were analyzed by GC-MS allowing the determination of the isotopic composition of the reaction products. The experiments show that the majority of the propene molecules are formed directly from methanol, and that only a minor part is formed by methylation of ethene.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00769305
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  • 10
    Electronic Resource
    Electronic Resource
    Scenarios for Multistage Stochastic Programs (2000)
    Springer
    Annals of operations research 100 (2000), S. 25-53 
    Details
    ISSN: 1572-9338
    Keywords: scenarios and scenario trees ; clustering ; importance sampling ; matching moments ; problem oriented requirements ; inference and bounds
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Economics
    Notes: Abstract A major issue in any application of multistage stochastic programming is the representation of the underlying random data process. We discuss the case when enough data paths can be generated according to an accepted parametric or nonparametric stochastic model. No assumptions on convexity with respect to the random parameters are required. We emphasize the notion of representative scenarios (or a representative scenario tree) relative to the problem being modeled.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1019206915174
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