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  • 1
    Electronic Resource
    Electronic Resource
    Parallel implementation of finite-element/newton method for solution of steady-state and transient nonlinear partial differential equations (1995)
    Springer
    Journal of scientific computing 10 (1995), S. 93-137 
    Details
    ISSN: 1573-7691
    Keywords: Domain decomposition ; nested dissection ; LU-factorization ; time integration ; Newton's method ; spectral elements ; finite elements
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Notes: Abstract Domain decomposition by nested dissection for concurrent factorization and storage (CFS) of asymmetric matrices is coupled with finite element and spectral element discretizations and with Newton's method to yield an algorithm for parallel solution of nonlinear initial-and boundary-value problem. The efficiency of the CFS algorithm implemented on a MIMD computer is demonstrated by analysis of the solution of the two-dimensional, Poisson equation discretized using both finite and spectral elements. Computation rates and speedups for the LU-decomposition algorithm, which is the most time consuming portion of the solution algorithm, scale with the number of processors. The spectral element discretization with high-order interpolating polynomials yields especially high speedups because the ratio of communication to computation is lower than for low-order finite element discretizations. The robustness of the parallel implementation of the finite-element/Newton algorithm is demonstrated by solution of steady and transient natural convection in a two-dimensional cavity, a standard test problem for low Prandtl number convection. Time integration is performed using a fully implicit algorithm with a modified Newton's method for solution of nonlinear equations at each time step. The efficiency of the CFS version of the finite-element/Newton algorithm compares well with a spectral element algorithm implemented on a MIMD computer using iterative matrix methods.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02087962
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  • 2
    Electronic Resource
    Electronic Resource
    An incomplete nested dissection algorithm for parallel direct solution of finite element discretizations of partial differential equations (1993)
    Springer
    Journal of scientific computing 8 (1993), S. 373-387 
    Details
    ISSN: 1573-7691
    Keywords: Domain decomposition ; nested dissection ; LU-factorization ; parallel computers ; MIMD
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Notes: Abstract A multilevel algorithm is presented for direct, parallel factorization of the large sparse matrices that arise from finite element and spectral element discretization of elliptic partial differential equations. Incomplete nested dissection and domain decomposition are used to distribute the domain among the processors and to organize the matrix into sections in which pivoting is applied to stabilize the factorization of indefinite equation sets. The algorithm is highly parallel and memory efficient; the efficient use of sparsity in the matrix allows the solution of larger problems as the number of processors is increased, and minimizes computations as well as the number and volume of communications among the processors. The number of messages and the total volume of messages passed during factorization, which are used as measures of algorithm efficiency, are reduced significantly compared to other algorithms. Factorization times are low and speedups high for implementation on an Intel iPSC/860 hypercube computer. Furthermore, the timings for forward and back substitutions are more than an order-of-magnitude smaller than the matrix decomposition times.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01061145
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  • 3
    Electronic Resource
    Electronic Resource
    Theory of transport processes in single crystal growth from the melt (1988)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 34 (1988), S. 881-911 
    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: The quality of large semiconductor crystals grown from the melt for use in electronic and optoelectronic devices is strongly influenced by the intricate coupling of heat and mass transfer and melt flow in growth systems. This paper reviews the present state of understanding of these processes starting from the simplest descriptions of solidification processes to detailed numerical calculations needed for quantitative modeling of processing with solidification. Descriptions of models for the vertical Bridgman-Stockbarger and Czochralski crystal growth techniques are included as examples of the level of understanding of industrially important methods.
    Additional Material: 24 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690340602
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  • 4
    Electronic Resource
    Electronic Resource
    Direct evidence for antifreeze glycoprotein adsorption onto an ice surface (1985)
    New York : Wiley-Blackwell
    Biopolymers 24 (1985), S. 1265-1270 
    Details
    ISSN: 0006-3525
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Aqueous solutions of antifreeze glycoproteins (AFGP) exhibit hysteresis between the freezing and melting temperatures. Several recent studies on the mechanism of function of this protein system suggest that a likely model is for the antifreeze molecules to be adsorbed onto the surface of the crystals. However, direct proof of the presence of adsorbed AFGP has eluded previous researchers. In the present study, enhanced surface second-harmonic generation (SSHG) was observed in the presence of an active AFGP solution in contact with a pure single crystal of ice. The enhancement of SSHG is a positive indication that active AFGP molecules adsorb to the surface of ice crystals.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bip.360240713
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  • 5
    Electronic Resource
    Electronic Resource
    Fourier transform mass spectrometry: Recent instrumental developments and applications (1986)
    New York, NY [u.a.] : Wiley-Blackwell
    Mass Spectrometry Reviews 5 (1986), S. 107-166 
    Details
    ISSN: 0277-7037
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Additional Material: 17 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mas.1280050202
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  • 6
    Electronic Resource
    Electronic Resource
    Damage detection, repair, and prevention in an ammonia storage sphere (1982)
    New York, NY : Wiley-Blackwell
    Plant/Operations Progress 1 (1982), S. 97-101 
    Details
    ISSN: 0278-4513
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prsb.720010207
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  • 7
    Electronic Resource
    Electronic Resource
    Summary of “an operator's experience with stress corrosion cracking of ammonia spheres” (1983)
    New York, NY : Wiley-Blackwell
    Plant/Operations Progress 2 (1983), S. 258-258 
    Details
    ISSN: 0278-4513
    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/prsb.720020415
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  • 8
    Electronic Resource
    Electronic Resource
    Preparation and polymerization of a new siloxane (1963)
    New York : Wiley-Blackwell
    Journal of Polymer Science Part B: Polymer Letters 1 (1963), S. 207-208 
    Details
    ISSN: 0449-2986
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1963.110010502
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  • 9
    Electronic Resource
    Electronic Resource
    A measurement of the rate of the reaction N + H + M → NH + M (1973)
    New York, NY : Wiley-Blackwell
    International Journal of Chemical Kinetics 5 (1973), S. 663-668 
    Details
    ISSN: 0538-8066
    Keywords: Chemistry ; Physical Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The combination reaction between N and H atoms has been studied in a flow system by mixing H atoms produced by thermal dissociation of H2 with active nitrogen produced by a microwave discharge. Relative N atom concentrations were determined from the intensity of the yellow nitrogen afterglow. Absolute N and H atom concentrations were measured by EPR absorption spectroscopy. Absolute N atom concentrations were also determined by titration with NO. Upper and lower limits of 6.4 ± 1.5 × 10-32 and 3.1 ± 1.0 × 10-32 cm6 molecule-2 sec-1 were determined for the rate constant.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/kin.550050416
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  • 10
    Electronic Resource
    Electronic Resource
    Diffusion of a trace gas into a flowing carrier (1970)
    New York, NY : Wiley-Blackwell
    International Journal of Chemical Kinetics 2 (1970), S. 475-477 
    Details
    ISSN: 0538-8068
    Keywords: Chemistry ; Physics Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Numerical Methods were used to solve the differential equation for diffusion of a trace gas into a flowing carrier gas having a parabolic velocity profile in a cylindrical tube. Steady state solutions are given in the form of contour diagrams of constant trace gas concentration.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/kin.550020604
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