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  • Organic Chemistry  (9,511)
  • Chemical Engineering  (6,025)
  • Engineering  (4,828)
  • Industrial Chemistry  (3,666)
  • 1995-1999  (9,087)
  • 1980-1984  (7,380)
  • 1970-1974  (7,563)
Collection
Keywords
Publisher
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    Finite element methods for geothermal reservoir simulation (1983)
    New York, NY [u.a.] : Wiley-Blackwell
    International Journal for Numerical and Analytical Methods in Geomechanics 7 (1983), S. 75-86 
    Details
    ISSN: 0363-9061
    Keywords: Engineering ; Engineering General
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Architecture, Civil Engineering, Surveying , Geosciences
    Notes: Two finite element algorithms suitable for long term simulation of geothermal reservoirs are presented. Both methods use a diagonal mass matrix and a Newton iteration scheme. The first scheme solves the 2N unsymmetric algebraic equations resulting from the finite element discretization of the equations governing the flow of heat and mass in porous media by using a banded equation solver. The second method, suitable for problems in which the transmissibility terms are small compared to the accumulation terms, reduces the set of N equations for the Newton corrections to a symmetric system. Comparison with finite difference schemes indicates that the proposed algorithms are competitive with existing methods.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/nag.1610070108
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  • 2
    Electronic Resource
    Electronic Resource
    AN IMPLICIT PROJECTION ALGORITHM FOR SIMULTANEOUS FLOW OF PLASTICITY AND DAMAGE IN STANDARD GENERALIZED MATERIALS (1996)
    Chichester [u.a.] : Wiley-Blackwell
    International Journal for Numerical Methods in Engineering 39 (1996), S. 3065-3082 
    Details
    ISSN: 0029-5981
    Keywords: biomechanics ; damage ; finite element method ; plasticity ; standard generalized material ; Engineering ; Engineering General
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mathematics , Technology
    Notes: Motivated by mechanical analysis of cancellous bone, a 3D constitutive law describing the simultaneous flow of rate-independent plasticity and damage is developed in the framework of thermodynamics of irreversible processes with internal variables. Following the hypothesis of standard generalized materials, a free energy and a dissipation potential are postulated and the associated flow rules derived with the tools of convex analysis. On the computational side, the classical implicit projection (or catching up) algorithm used in plasticity is extended to account for the additional flow of damage. Due to the existence of a dissipation potential, linearization of the incremental algorithm provides a symmetric tangent operator. Numerical resolutions of several boundary value problems and a biomechanical application are presented to illustrate the potential of the constitutive model and demonstrate the quadratic convergence of the algorithm.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Membrane handbook edited by W. S. Winston Ho, and Kamalesh K. Sirkar, Van Nostrand Reinhold, New York, 1992, 954 pp. $131.95 (1995)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 41 (1995), S. 2343-2344 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690411024
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  • 4
    Electronic Resource
    Electronic Resource
    A family of efficient extrapolation formulae and their application in mechanics (1998)
    Chichester [u.a.] : Wiley-Blackwell
    International Journal for Numerical Methods in Engineering 43 (1998), S. 733-753 
    Details
    ISSN: 0029-5981
    Keywords: extrapolation ; series ; sequences ; binomial power series ; Engineering ; Numerical Methods and Modeling
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mathematics , Technology
    Notes: The problem of extrapolation based just on a few initial terms of a sequence or series is discussed. Possible regularity of the extrapolation formula is postulated. Binomial power series is regarded as sufficiently regular and several extrapolation formulae using 3, 4, or 5 initial terms and based on binomial power series are derived. They are called the ‘bs-extrapolation formulae’ and compared to other extrapolation algorithms. Good accuracy in many particular cases is stated. Three examples of applications in mechanics are quoted: they consider consecutive FEM-solutions, postbuckling behaviour of an Euler column and optimal plastic design of a plane T-head. © 1998 John Wiley & Sons, Ltd.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Untersuchungen über den Thermischen Zerfall von n-Dodecylcyclopentan in der Gasphase (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 964-972 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Investigations on the Thermal Decomposition of n-Dodecylcyclopentane in the Gas PhaseIn the thermal decomposition of n-dodecylcyclopentane at 670 and 750°C in a laboratory tubular reactor mixtures of hydrogen and 57 and 113 hydrocarbons respectively are formed. The mixtures have been analyzed and identified by capillary gas chromatography and by mass spectrometry. The distribution of the reaction products is used for mechanistic discussions.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19823240615
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  • 6
    Electronic Resource
    Electronic Resource
    Kinetische Untersuchungen zur Pyrolyse von Mono-n-alkyl-cyclohexanen (1983)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 325 (1983), S. 66-74 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Kinetic Investigations of the Pyrolysis of Mono-n-alkyl-cyclohexanesThe thermal decomposition of cyclohexane and six mono-n-alkylcyclohexanes was studied kinetically in a metallic laboratory tubular reactor at 650 to 850°C and atmospheric pressure.Kinetic parameters were found to be a function of length of the alkylic side chain. A comparison with analogous parameters of n-paraffins and the unsubstituted cyclohexane allowed the conclusion that C—C-scission in the alkylic chain is the initial reaction in pyrolysis of n-alkylcyclohexanes followed by radical attacks to all C—H-bonds of the feed molecules.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19833250109
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  • 7
    Electronic Resource
    Electronic Resource
    Wechselspiel zwischen Hersteller und Auftraggeber bei der Abwicklung schwerer ApparatekomponentenVortrag auf dem 199. Dechema-Kolloquium am 4. November 1973 in Frankfurt/M. (1974)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 46 (1974), S. 542-547 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Der Anlagenbauer fordert mit Recht von seinen Zulieferern niedrige Preise, kurze Lieferzeiten, hohe Terminsicherheit und höchste Qualität. Apparate, die in den speziell verlangten Eigenschaften von Normalausführungen abweichen, bedürfen dazu einer besonders a bgestimmten Zusammenarbeit. Einige wichtige Gesichtspunkte hierzu werden dargelegt und durch Beispiele erläutert.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330461303
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  • 8
    Electronic Resource
    Electronic Resource
    Beanspruchungsgerechte Konstruktion von Apparaten. unter Berücksichtigung einer wirtschaftlichen FertigungVorgetragen beim Dechema-Symposium „Konstruktionsprobleme des Chemie-Apparatebaues“, 11. und 12. Dezember 1969 in Frankfurt/M. (1970)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 42 (1970), S. 737-743 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Der hohe Anteil der Werkstoffe an den Gesamtkosten zwingt den Apparatebauer, diese weitestgehend auszunutzen. Dazu muß beanspruchungsgerecht konstruiert werden. Um dies mit wirtschaftlichen Mitteln systematisch zu vollziehen, müssen die Auslegungskriterien, die speziellen Eigenschaften der einzelnen Bauelemente, die Belastungen, die Spannungen zur Beurteilung des Tragvermögens sowie die Fertigungsvorgänge des Apparatebaues beherrscht werden. Einzelne markante Beispiele zeigen, wie sich die allgemein gültigen Gesichtspunkte im Detail äußern.
    Additional Material: 11 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330421103
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  • 9
    Electronic Resource
    Electronic Resource
    Fixed bed desorption behavior of gases with nonlinear equilibria: Part II. Dilute, multicomponent, isothermal systems (1974)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 20 (1974), S. 915-923 
    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: Generalized depletion curves for desorption (and Corresponding breakthrough curves for adsorption) were calculated for systems characterized by the Langmuir-type multicomponent equilibrium equation and controlled by the film type rate model. In contrast with adsorption where the nonkey (or less strongly adsorbed) component curves display overshoots above feed concentration, in desorption the key component depletion curves exhibit the instabilities in the form of inflections and curvatures. As in the one component case, the differences in the depletion and breakthrough curves may be related to the rate phenomena. The undulations in the key component depletion curves may be characterized by derivatives of the rate data. The major significance of these instabilities is to elongate the depletion curves, which in turn requires the expenditure of added effort during regeneration. Process modifications are indicated, which could suppress the instabilities. The predicted trends were confirmed by experimental depletion curves.
    Additional Material: 12 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690200512
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  • 10
    Electronic Resource
    Electronic Resource
    Fixed bed desorption behavior of gases with non-linear equilibria: Part I. Dilute, one component, isothermal systems (1972)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 18 (1972), S. 1139-1147 
    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: Generalized depletion curves for desorption (and breakthrough curves for adsorption) were calculated for a system characterized by the Langmuirtype equilibria and controlled by a film type rate model. The depletion points generally appear sooner than the corresponding breakthrough points, and the desorption profiles are significantly broader than the corresponding adsorption curves. These phenomena may be best explained in terms of the prevailing driving forces. The effects of adsorbate properties and operating variables (inlet composition and flow rate) were established and experimentally substantiated.
    Additional Material: 16 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690180609
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