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  • 1
    Electronic Resource
    Electronic Resource
    Analysis of annular bed reactor for methanation of carbon monoxide (1982)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 28 (1982), S. 266-273 
    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 new reactor configuration, the annular bed reactor, is mathematically modeled to assess its capabilities as a CO methanation reactor. The results show that the reactor offers excellent temperature control characteristics and negligible pressure drop, and that it is a promising configuration for this as well as other reaction systems.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690280215
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  • 2
    Electronic Resource
    Electronic Resource
    Equilibrium theory for complete adiabatic adsorption cycles (1987)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 33 (1987), S. 470-479 
    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: Complete adiabatic fixed-bed adsorption cycles with adsorption, heating, and cooling steps are analyzed using simple wave theory. Solutions consist of simple waves, shocks, combined waves, and wave interactions with patterns established by a mapping between hodograph and physical planes. The system considered is benzene adsorbed on activated carbon with nitrogen as the carrier gas.
    Additional Material: 11 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690330312
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  • 3
    Electronic Resource
    Electronic Resource
    On numerical modelling of embedded subsonic flow (1986)
    Chichester : Wiley-Blackwell
    International Journal for Numerical Methods in Fluids 6 (1986), S. 103-112 
    Details
    ISSN: 0271-2091
    Keywords: Supersonic ; Subsonic ; Mach Disc ; Compressible Pressure-correction ; Engineering ; Engineering General
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: An analytical model has been developed for computing embedded subsonic flow in rocket plumes from underexpanded axisymmetric supersonic nozzles. Numerical procedures based on the analysis have been incorporated in a simplified, non-reacting exhaust structure program and calculations for representative plume conditions performed. The technique is numerically stable and has provided satisfactory predictions of Mach-disc associated embedded subsonic flow.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/fld.1650060302
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  • 4
    Electronic Resource
    Electronic Resource
    Calculating electrostatic forces from grid-calculated potentials (1990)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Computational Chemistry 11 (1990), S. 401-409 
    Details
    ISSN: 0192-8651
    Keywords: Computational Chemistry and Molecular Modeling ; Biochemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Computer Science
    Notes: The accurate calculation of forces from finite difference potentials is very important, especially in the area of Brownian dynamics simulations. Test charge methods are typically used to calculate these forces. In these methods, the potential is calculated with one group of charges present, then the force on a second set of charges is calculated as the negative of the gradient of the potential times the charge. The test charge methods for calculating forces between solute molecules have been compared with more accurate methods and then regions of validity of the test charge methods explored. The test charge methods neglect certain reaction field effects. It is found for the simple charged systems studied that beyond a center-to-center separation of about twice the sum of the molecular radii the test charge approximations can be quite good. For polar molecules with no net charges, however, the corrections can be significant to even longer ranges.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jcc.540110315
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  • 5
    Electronic Resource
    Electronic Resource
    Solving the finite difference linearized Poisson-Boltzmann equation: A comparison of relaxation and conjugate gradient methods (1989)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Computational Chemistry 10 (1989), S. 386-391 
    Details
    ISSN: 0192-8651
    Keywords: Computational Chemistry and Molecular Modeling ; Biochemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Computer Science
    Notes: Comparisons have been made between relaxation methods and certain preconditioned conjugate gradient techniques for solving the system of linear equations arising from the finite-difference form of the linearized Poisson-Boltzmann equation. The incomplete Cholesky conjugate gradient (ICCG) method of Meijerink and van der Vorst has been found to be superior to relaxation methods, with at least a factor of two improvement in speed, and only a 50% increase in storage.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jcc.540100313
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  • 6
    Electronic Resource
    Electronic Resource
    Sensitized photoinitiated grafting of N-vinyl-2-prrolidone (NVP) to woolen substratesFor details of the Ames testing procedure, see ref. 1. (1981)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 26 (1981), S. 521-527 
    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: The photoinitiated copolymerization of N-vinyl pyrrolidone onto woolen substrates from aqueous solutions has been studied. A novel water-soluble photosensitizer, 4-(sulpomethyl) benzil sodium salt (Quantacure SKS - patent pending), has been developed and its efficiency assessed with and without an amine synergist. The initiator is nonmutagenic within the terms of the Ames testing procedure. Induction periods were not observed. The action of the so-called synergist, dimethylaminoethanol, was to reduce or stop the grafting reaction. The significance of the pH of the aqueous medium is shown by a maximum in grafting being observed at pH = 4.0 for otherwise standard conditions. Aspects of impregnation procedure were examined, marked improvements in the grafting level being achieved by use of preliminary evacuation - freeze/thaw cycles.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1981.070260212
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  • 7
    Electronic Resource
    Electronic Resource
    Iterative solution of the stream function-vorticity equations using a multigrid solver with finite elements (1993)
    Chichester : Wiley-Blackwell
    Communications in Numerical Methods in Engineering 9 (1993), S. 587-594 
    Details
    ISSN: 1069-8299
    Keywords: Engineering ; Engineering General
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mathematics , Technology
    Notes: The solution of the stream function-vorticity equations is developed using a multigrid method to improve efficiency in a finite-element p-method. The equations are discretized using 2-D Lagrange finite elements (linear, quadratic and cubic) and solved in iteratively decoupled form using successive approximation and continuation methods. The comparative performance of several multigrid and direct matrix solvers is investigated with respect to convergence characteristics and time performance on the Cray Y-MP.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cnm.1640090706
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  • 8
    Electronic Resource
    Electronic Resource
    Temperature and concentration behavior of anomalous microwave resonances in DNA (1989)
    New York : Wiley-Blackwell
    Biopolymers 28 (1989), S. 1429-1433 
    Details
    ISSN: 0006-3525
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: We have calculated the expected absorption of microwave radiation in the gigaHertz frequency range by fixed-length DNA polymer molecules dissolved in saline solution. While the effects of counterions and solvent dynamics have been accounted for in detail, the features of the absorption are completely dominated by the interaction between the charged polymer and the so-called first hydration layer, that is, the nearest layer of solvent water molecules not actually bonded to the polymer. The relevant parameters of the interaction are the strength of the water-to-polymer coupling and the average persistence time of the individual water-to-polymer bonds. These are presumably hydrogen bonds to the oxygen atoms of the backbone phosphate structure. Using a given parameterization we can obtain the structured absorption corresponding to compressional wave phonon excitations on the polymer, “organ pipe” modes, such as have been claimed to be seen by Edwards, Davis, Swicord, and Saffer. While further studies have not confirmed these resonances, at some frequency and hydration these modes must become visible because of the high relaxation time measured by Lindsay, the existence of the resonances in relatively dry fibers and films of DNA, and the existence of underdamped modes in the ir spectrum of DNA in solution.We have examined the effects of varying slat concentration and the system temperature. In both cases the effects are virtually nil, in the former because of the Manning condensation phenomenon that preserves a remarkably constant polymer environment over a wide range of bulk ionic strength, and in the latter case because of a fortuitous competition between effects of bulk viscosity and persistence time changes with temperature. Hence any effects seen in the experimental variation of temperature or salinity could be wholly attributed to their modification of the hydration layer properties.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bip.360280808
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  • 9
    Electronic Resource
    Electronic Resource
    Some intermediates in the Reaction between Vanadium(IV) and Vanadium(V) (1967)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 353 (1967), S. 324-328 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Vanadin(IV) und -(V) bilden in saurem Medium grüne, in der Hitze ausfallende Reaktionsprodukte, deren Zusammensetzung von den Ausgangskonzentrationen (an VOSO4 und NaVO3), dem pH-Wert und der Zeit abhängt.
    Notes: Vanadium(IV) and vanadium(V) react in acid media forming green intermediates whose compositions depend upon the concentrations of the reactants, pH of the media, and time of reaction. Two solid intermediates separated from mixtures of vanadyl sulfate and sodium metavanadate solutions more than a year ago appear stable at room temperature even to this date.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19673530513
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  • 10
    Electronic Resource
    Electronic Resource
    Verbindungen mit dem neuen Phosphanthren-Ring (1963)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 75 (1963), S. 1028-1028 
    Details
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ange.19630752120
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