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  • 1
    Electronic Resource
    Electronic Resource
    Pressure effect on thermal relaxation behavior of the Curie temperature in amorphous alloys (1990)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 67 (1990), S. 3655-3660 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The Curie temperature relaxation behavior in two amorphous ferromagnetic alloys (Fe10Co55Ni35)78Si8B14 and Fe40Ni40P14B6 (Metglas 2826) subjected to annealing at pressures up to 2 GPa is investigated. A comparison of the relaxed amounts of TC due to isothermal and isochronal annealings at 0, 1, and 2 GPa shows a delaying effect on the relaxation process during high-pressure annealing, while the concomitant kinetics of the processes remains unchanged. The pressure-induced percentage reductions in TC relaxation are estimated to be 8% and 12% per GPa, respectively. The reversible relaxation behavior was found still present during high-pressure annealing, but with a reduced amplitude. By annealing between high and low pressures at fixed temperature, some regenerative relaxation behavior was observed after every completion of the cyclic pressures. The obtained results may be explained by pressure-induced narrowing of regions in the amorphous structure. It is suggested that these extended regions are the main locations where the compositional short-range ordering contributed to TC relaxation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.345320
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  • 2
    Electronic Resource
    Electronic Resource
    Multielemental Neutron Activation Analysis of Chinese Geochemical Reference Samples (1986)
    Oxford, UK : Blackwell Publishing Ltd
    Geostandards and geoanalytical research 10 (1986), S. 0 
    Details
    ISSN: 1751-908X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: The concentrations of 36 elements in geochemical reference samples issued by the Ministry of Geology and Mineral Resources of China were determined by neutron activation analysis. Three main variants of the technique, instrumental, epithermal, and nreirradiation separation neutron activation analysis (INAA, ENAA, PNAA), were employed in a systematic study of the samples by three laboratories: the Institute of Atomic Energy of the Academia Sinica (INAA, ENAA), the Institute of High Energy Physics of the Academia Sinica (INAA), and the Institute of Geophysical and Geochemical Prosnecting of the Ministry of Geology and Mineral resources (INAA,PNAA). Both long and short irradiations and both Ge(Li) and HPGe detectors were used. A supplementary software nackage for data processing was developed. About 81% of the data determined by neutron activation agreed with recomended values with in 15%.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1751-908X.1986.tb00807.x
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  • 3
    Electronic Resource
    Electronic Resource
    Ultradry seed storage cuts cost of gene bank (1998)
    [s.l.] : Macmillan Magazines Ltd.
    Nature 393 (1998), S. 223-224 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Today we are faced with an urgent challenge to organize the efficient conservation of biodiversity. In the case of plants, one way of doing this is to store their seeds in a gene bank. The effective preservation of seeds depends on their moisture content and on the storage temperature, which ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/30383
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  • 4
    Electronic Resource
    Electronic Resource
    Damage Finite Element Analysis of Nano- Composite Ceramics (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 368-372 (Feb. 2008), p. 1657-1658 
    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: Based on experiments, micro-mechanics and finite element theory, nanocomposite ceramics issimplified as representative volume cell in the paper, and in order to study the interaction of the particles,each cell concludes two nano-ceramic particles. We use ANSYS program to construct the cell model andsimulate the stress field. The stress distribution and the material properties are obtained. The results showthat the stress is uneven in the cell and the elements near the nano-ceramic particle with high stiffness willdamage first. Finely, the stress change and damage evolution route are simulated by using the elementbirth and death technology. The computational results are accordance with experiments and theories
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/56/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.368-372.1657.pdf
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  • 5
    Electronic Resource
    Electronic Resource
    The Micromechanical Stress Field of Cermets Composite Containing Interfacial Arc-Microcracks (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 353-358 (Sept. 2007), p. 1493-1496 
    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: The emerging cause of arc-microcracks is interpreted and the interaction betweenceramic particles and arc-microcracks is accounted for determining the average disturbance strainand equivalent eigen strains by using Mori-Tanaka method. Then the micromechanical stress fieldof the cermets is estimated. Results show that the micromechanical stress field is not associatedwith the distribution of arc-microcracks. The stress in matrix and ceramic particles will increasewhen the volume fractions of arc-microcracks increases
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/55/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.353-358.1493.pdf
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  • 6
    Electronic Resource
    Electronic Resource
    Damage Model and Failure Stress of Ceramic Particle Ni Base Alloy Composite (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 368-372 (Feb. 2008), p. 1654-1656 
    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: For Ceramic particle Ni base alloy composite, experiments and damage evolution finiteelement analysis shows that arc-microcracks happen only at the interfaces between the particles andmatrix, and then extend to the matrix. Composite strength is coincident with matrix failure. First, thethree-phases model is used to determine the external strains of two-phases element. Thenmicromechanical stress field in the matrix is obtained. Based on the generalized thermodynamic force indamage process, the damage equivalent stress can be computed. As the damage equivalent stress is equalto the ultimate stress of the matrix, the failure stress of matrix in composites is given
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/56/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.368-372.1654.pdf
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  • 7
    Electronic Resource
    Electronic Resource
    The Rayleigh quotient method for computing eigenvalue bounds of vibrational systems with interval parameters (1993)
    Springer
    Acta mechanica solida Sinica 6 (1993), S. 309-318 
    Details
    ISSN: 0894-9166
    Keywords: Rayleigh quotient iteration ; eigenvalue problem ; structure with interval parameters
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract In this paper, an effective method, the Rayleigh quotient iteration, for computing the bounds of structures with interval parameters is presented. When the uncertainty of the structural parameters is described by using the interval, i.e. an unknown-but-bounded version, the structural vibration eigenvalues will become the interval. It is desirable to give these interval eigenvalues. An application of this method is illustrated by a numerical example. The results show that the Rayleigh quotient iteration method is very effective for constructing the upper and lower bounds on the eigenvalues of structures with interval parameters.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02208018
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  • 8
    Electronic Resource
    Electronic Resource
    A new algorithm for generating carrier adjusted differential GPS corrections (1996)
    Springer
    Journal of geodesy 70 (1996), S. 673-680 
    Details
    ISSN: 1432-1394
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying
    Notes: Abstract. This paper presents a new algorithm for generating differential GPS corrections. This algorithm directly uses code and carrier observations in the measurement model of a Kalman filter, so that it is possible to use a simple stochastic observation model and to use the standard algorithm of the Kalman filter. The algorithm accounts for biases like multipath errors and instrumental delays in code observations and it shows how differential corrections are differently affected by code biases when dual or single frequency data are used.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00867146
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  • 9
    Electronic Resource
    Electronic Resource
    Seismic responses for multi-storeyed buildings composed of nonorthogonal members under bi-directional horizontal earthouake ground motions (1982)
    Springer
    Applied mathematics and mechanics 3 (1982), S. 67-82 
    Details
    ISSN: 1573-2754
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Mathematics , Physics
    Notes: Abstract This paper presents a method for analyzing both linear and nonlinear seismic responses of multistoreyed buildings composed of nonorthogonal structural members under the action of bi-directional horizontal earthquake waves. Different kinds of restoring force model are used. An efficient computer programme for the computation of nonlinear seismic response of the structure was worked out. In order to illustrate the application of this method, an example of a ten-storeyed building of such sort is given.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01897388
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  • 10
    Electronic Resource
    Electronic Resource
    Magnetic and Mössbauer studies of the superconductor Eu(Dy, Gd)Ba2Cu3O7−δ (1994)
    Springer
    Hyperfine interactions 93 (1994), S. 1671-1676 
    Details
    ISSN: 1572-9540
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The changes of the microstructures of bulk single-phase Eu1−x Dy x Ba2Cu3O7−δ and Eu1−y Gd y Ba2Cu3O7−δ superconductors due to (Dy, Gd)-doping were investigated by the Mössbauer effect. The pinning potentials of the samples were calculated by magnetization relaxation analysis. The interaction between the magnetic moment of magnetic rare-earth cations and flux lines in these samples was considered as a predominant pinning mechanism in highT c superconductors in this paper.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02072926
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