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  • 1
    Electronic Resource
    Electronic Resource
    Microstructure of Ceramic Layer in Composite Pipe Made by SHS-Gravitational Process (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 336-338 (Apr. 2007), p. 1722-1724 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: SHS-gravitational process was developed to synthesize the ceramic lined steel pipe, especiallyfor elbow, conical pipe, three-way and four-way pipe and pipe with a small diameter. InSHS-gravitational process, the molten ceramic, which separated out from the reaction products due totheir density difference, solidified to form the ceramic lined layer in the steel pipe when contacted withthe steel pipe wall. With an X-ray diffractometer and a scanning electron microscope, it can be found thatthe ceramic layer is composed of α-Al2O3 and FeAl2O4. A small amount of iron also remains in theceramic layer. There is a thin equiaxed grain area of alumina near the steel pipe wall, and then aluminawas grown in form of dentrite to the surface of ceramic layer. FeAl2O4 distributes among alumina dentrite.Although the ceramic layer was solidified from one end to another end of a pipe, the microstructure ofceramic layer was almost uniform throughout the whole length of the pipe
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/53/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.336-338.1722.pdf
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  • 2
    Electronic Resource
    Electronic Resource
    Comparative analysis of Borrelia isolates from southeastern USA based on randomly amplified polymorphic DNA fingerprint and 16S ribosomal gene sequence analyses (2003)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 228 (2003), S. 0 
    Details
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Fifty-three southern USA Borrelia isolates were characterized using randomly amplified polymorphic DNA fingerprinting analysis (RAPD). Twenty-nine types were recognized among 37 B. andersonii strains, seven types among eight B. bissettii strains, and seven types among seven B. burgdorferi sensu stricto strains. Strain TXW-1 formed a separate RAPD type. Nearly complete sequences of the rrs genes from 17 representative southern Borrelia were determined. The similarity values were found to be 96–100% within the B. burgdorferi sensu lato (s.l.) complex, 94–99% among the relapsing fever borreliae, and 93–99% between the two complexes. Phylogenetic analysis indicated that all the Borrelia strains we analyzed could be divided into two parts: the B. burgdorferi s.l. complex and the relapsing fever borreliae complex. TXW-1 segregated with the North American relapsing fever borreliae and formed a separate subbranch.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/S0378-1097(03)00763-8
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  • 3
    Electronic Resource
    Electronic Resource
    Characteristics of Combustion Reaction in Al-Fe〈sub〉2〈/sub〉O〈sub〉3〈/sub〉 System under Gravitational Field (2001)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 217 (Oct. 2001), p. 133-136 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/46/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.217.133.pdf
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  • 4
    Electronic Resource
    Electronic Resource
    Phase transitions and hysteresis in nonlocal and order-parameter models (1995)
    Springer
    Meccanica 30 (1995), S. 541-565 
    Details
    ISSN: 1572-9648
    Keywords: Phase transitions ; Hysteresis ; Order-parameter ; Nonlocal equations ; Phase transformations ; Solid mechanics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Description / Table of Contents: Sommario Il lavoro descrive due tipi di regolarizzazione del problema quasistatico per un potenziale con due minimi in una dimensione. Un modello evidenzia caratteri di non località spaziale, mentre l'altro conduce ad una teoria con parametro d'ordine. Si derivano alcuni risultati di esistenza e regolarità e si presentano alcuni studi numerici che mostrano l'isteresi e il moto delle frontiere tra le fasi.
    Notes: Abstract The paper describes two types of regularization to the basic quasistatic double-well potential problem in one space dimension. One model features a spatially nonlocal term while the other incorporates the use of an order parameter. Some basic existence and regularity results for these modified models are derived and some numerical calculations that show hysteresis and motion of phase boundaries are presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01557084
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  • 5
    Electronic Resource
    Electronic Resource
    Defect correction and a posteriori error estimation of Petrov-Galerkin methods for nonlinear Volterra integro-differential equations (2000)
    Springer
    Applications of mathematics 45 (2000), S. 241-263 
    Details
    ISSN: 1572-9109
    Keywords: Volterra integro-differential equations ; Petrov-Galerkin methods ; asymptotic expansions ; defect correction ; a posteriori error estimators
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract We present two defect correction schemes to accelerate the Petrov-Galerkin finite element methods [19] for nonlinear Volterra integro-differential equations. Using asymptotic expansions of the errors, we show that the defect correction schemes can yield higher order approximations to either the exact solution or its derivative. One of these schemes even does not impose any extra regularity requirement on the exact solution. As by-products, all of these higher order numerical methods can also be used to form a posteriori error estimators for accessing actual errors of the Petrov-Galerkin finite element solutions. Numerical examples are also provided to illustrate the theoretical results obtained in this paper.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1022333811602
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  • 6
    Electronic Resource
    Electronic Resource
    Direct numerical method for an inverse problem of hyperbolic equations (1992)
    New York, NY [u.a.] : Wiley-Blackwell
    Numerical Methods for Partial Differential Equations 8 (1992), S. 551-574 
    Details
    ISSN: 0749-159X
    Keywords: Mathematics and Statistics ; Numerical Methods
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mathematics
    Notes: A coefficient inverse problem of the one-dimensional hyperbolic equation with overspecified boundary conditions is solved by the finite difference method. The computation is carried out in the x direction instead of the usual t direction. The original boundary condition and the overspecified boundary data are used as the new initial conditions, and the original data at t = 0 are used to compute the coefficient directly. The computation time used by this scheme is almost equal to that for solving the hyperbolic equation in the same region once, even though the inverse problem is essentially nonlinear and hence more difficult to solve. An error estimate is obtained that guarantees the stability of the scheme marching in the x direction. Several numerical experiments are carried out to show the convergence and other properties of the scheme. © 1992 John Wiley & Sons, Inc.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/num.1690080605
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  • 7
    Book
    Book
    Electromagnetic material interrogation using conductive interfaces and acoustic wavefronts; 21 (2000)
    Philadelphia, PA :SIAM,
    Details
    Title: Electromagnetic material interrogation using conductive interfaces and acoustic wavefronts; 21
    Author: Banks, H. T.
    Contributer: Buksas, Michael W. , Lin, Tao
    Publisher: Philadelphia, PA :SIAM,
    Year of publication: 2000
    Pages: 146 S.
    Series Statement: Frontiers in applied mathematics 21
    Type of Medium: Book
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