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  • 1
    Electronic Resource
    Electronic Resource
    Mechanism of the Hydrolytic Cleavage of Carbon-Carbon Bonds. III. Hydrolysis of a-Nitro and a-Sulfonyl Ketones (1955)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 77 (1955), S. 527-529 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja01608a004
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Molecular cloning and expression of a MAP kinase homologue from pea (1993)
    Springer
    Plant molecular biology 22 (1993), S. 83-90 
    Details
    ISSN: 1573-5028
    Keywords: axillary bud development ; cell cycle regulation ; MAP kinase ; Pisum sativum ; protein kinase
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The cdc2 kinases are important cell cycle regulators in all eukaryotes. MAP kinases, a closely related family of protein kinases, are involved in cell cycle regulation in yeasts and vertebrates, but previously have not been documented in plants. We used PCR to amplify Brassica napus DNA sequences using primers corresponding to amino sequences that are common to all known protein kinases. One sequence was highly similar to KSS1, a MAP kinase from Saccharomyces cerevisiae. This sequence was used to isolate a full-length MAP kinase-like clone from a pea cDNA library. The pea clone, called D5, shared approximately 50% amino acid identity with MAP kinases from yeasts and vertebrates and about 41% identity with plant cdc2 kinases. An expression protein encoded by D5 was recognized by an antiserum specific to human MAP kinases (ERKs). Messenger RNA corresponding to D5 was present at similar levels in all tissues examined, without regard to whether cell division or elongation were occurring in those tissues.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00038997
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Spectral sensitivity in linear biological models (1984)
    Springer
    Journal of mathematical biology 20 (1984), S. 203-221 
    Details
    ISSN: 1432-1416
    Keywords: Sensitivity analysis ; component matrices ; spectral resolution ; linear difference ; differential equations ; companion matrices ; Leslie matrices ; ecomatrices ; compartmental matrices ; stochastic matrices
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Mathematics
    Notes: Abstract Properties of spectral components of the system matrix of linear time-invariant discrete or continuous models are investigated. It is shown that the entries in these matrices have the interpretation of being the sensitivity of the system matrix eigenvalues with respect to the model parameters. The spectral resolution formula for linear operators is used to get explicit results about component matrices and eigenvalue sensitivity. In biological modeling, particular interest is in the real maximal or minimal roots of the system matrix. Exact formulation of the related spectral components is made in important system matrix cases such as companion, Leslie, ecosystem, compartmental, and stochastic matrices.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00285347
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Conical moving-bed shale retort model (1990)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 36 (1990), S. 809-817 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: This two-dimensional model of a moving-bed shale oil retort accounts for the major physical interactions of convective heating and kerogen decomposition coupled with the shale and gas flow distributions. Data in a small-sale apparatus support a solids flow model of potential flow, although the exiting boundary conditions are uncertain. The calculations show that efficient retorting will only occur if the upper shale surface is shaped so that the shale particle velocity is perpendicular to this surface, and parallel to the entering retort gas flow. Even in the ideal flow case, performance is quite sensitive to gas/solids flow ratio. This model could be used with measured temperature distributions to optimize the surface profile.
    Additional Material: 13 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690360602
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Trickle-bed reactor flow simulation (1991)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 37 (1991), S. 377-382 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: A steady-state, two-dimensional model for cocurrent gas and liquid flow in a trickle-bed reactor is described. The model includes gas-liquid interaction and isothermal, incompressible flow without phase change or chemical reaction. The momentum equation proposed by Saez and Carbonell is used, along with their expressions for relative permeabilities of gas and liquid phases. Capillary pressure equations determine the difference in the pressures of flowing phases. The results of the model simulation agree with experimental data on flow distribution, liquid spreading, and phase segregation in a two-dimensional trickle bed with air-water flow in both low- and high-interaction flow regimes.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690370308
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    Paper (German National Licenses)
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