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  • 1
    Electronic Resource
    Electronic Resource
    FTIR-PAS investigation on polyphenylene sulphide
    Amsterdam : Elsevier
    Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy Section 47 (1991), S. 737-741 
    Details
    ISSN: 0584-8539
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0584-8539(91)80144-8
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  • 2
    Electronic Resource
    Electronic Resource
    Thermal entanglement in two qutrits system (2005)
    Springer
    The European physical journal 32 (2005), S. 409-412 
    Details
    ISSN: 1434-6079
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract. The thermal entanglement in a two-qutrit system with two spins coupled by exchange interaction is investigated in terms of the measure of entanglement called “negativity”. It is found that the thermal entanglement is present and evolvements symmetrically between both ferromagnetic and antiferromagnetic exchange couplings with the temperature. Moreover the critical temperature at which the negativity vanishes increases with the exchange coupling constant J. From the temperature and magnetic field dependences we demonstrate that the temperature and the magnetic field can affect the feature of the thermal entanglement significantly.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1140/epjd/e2004-00194-y
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  • 3
    Electronic Resource
    Electronic Resource
    Production and characterization of antibodies cross-reactive with major aflatoxins (1989)
    Springer
    Cellular and molecular life sciences 45 (1989), S. 182-184 
    Details
    ISSN: 1420-9071
    Keywords: Aflatoxins ; immunoassay ; antibody ; rabbit ; cross-reactivity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Antibodies cross-reactive with 4 major aflatoxins were demonstrated three weeks after immunization of rabbits with an immunogen which was prepared by conjugating aflatoxin B3 to bovine serum albumin. Aflatoxin B3 was first converted to its hemisuccinate before conjugation to the protein. Tritiated aflatoxin B1 (AFB1) was used as the marker ligand both for antibody titer determination as well as for analysis of antibody specificity. Competitive RIA revealed that the antibodies have good cross-reactivity with aflatoxins B1, B2, G1, and G2 when tritiated AFB1 was used as the marker ligand. The concentrations causing 50% inhibition of binding of3H-AFB1 to the antibodies by unlabeled aflatoxins B1, B2, G1, G2 and B3 were found to be 0.25, 3.34, 0.32, 4.0 and 0.53 ng/assay, respectively. The antibodies could be used for simultaneous analysis of aflatoxins B1 and G1, two of the most important toxic metabolites produced byAspergillus flavus andA. parasiticus.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01954869
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Influence of Membrane Physical State on the Lysosomal Proton Permeability (2000)
    Springer
    The journal of membrane biology 175 (2000), S. 53-62 
    Details
    ISSN: 1432-1424
    Keywords: Key words: Lysosomes — Membrane fluidity — Proton permeability — Membrane potential — Proton leakage
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract. Influence of membrane physical state on the proton permeability of isolated lysosomes was assessed by measuring the membrane potential with 3,3′-dipropylthiadicarbocyanine iodide and monitoring their proton leakage with p-nitrophenol. Changes in the membrane order were examined by the steady-state fluorescence anisotropy of 1,6-diphenyl-1,3,5-hexatriene. Both the membrane potential and proton leakage increased with fluidizing the lysosomal membranes by benzyl alcohol and decreased with rigidifying the membranes by cholesteryl hemisuccinate. The proton permeability increased to the maximum of 42% by the benzyl alcohol treatment and decreased to the minimum of 38.1% by the cholesteryl hemisuccinate treatment. Treating the lysosomes with protonophore CCCP increased the proton permeability by 58%. The effects of the membrane fluidization and rigidification can be reversed by rigidifying the fluidized membranes and fluidizing the rigidified membranes, respectively. The results indicate that the proton permeability of lysosomes increased and decreased with increasing and decreasing their membrane fluidity, respectively. Moreover, the lysosomal proton permeability did not alter further if the changes, either an increase or a decrease, in the fluidity exceeded some amount. The results suggest that the proton permeability of lysosomes can be modulated finitely by the alterations in their membrane physical state.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002320001054
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  • 5
    Electronic Resource
    Electronic Resource
    High-dynamic-range characterization of ultrashort pulses (1997)
    Springer
    Applied physics 65 (1997), S. 307-310 
    Details
    ISSN: 1432-0649
    Keywords: PACS: 42.55R; 42.60F
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s003400050277
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  • 6
    Electronic Resource
    Electronic Resource
    Numerical Simulation and Optimal Design of Rotary Draw Bending Pipe (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Applied mechanics and materials Vol. 10-12 (Dec. 2007), p. 172-176 
    Details
    ISSN: 1662-7482
    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 numerical simulation method is used to solve the problems of pipe bendingmanufacturing such as die with fine cracks, ovality of pipe. The fan-shaped die is welded with steelplate in circle and rib in radial direction by the analysis of structural deformation. The optimaldesign is provided with ovality of pipe as object variable and sliding slot dimensions as designvariables. Compared with experiential shape groove of slot, ovality of optimized slot decreasesabout 10.5% in average. It greatly reduced the production cost using computer simulation method toreplace a lot of experiment improving tube-bending production
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/38/transtech_doi~10.4028%252Fwww.scientific.net%252FAMM.10-12.172.pdf
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  • 7
    Electronic Resource
    Electronic Resource
    Hydrogen Solubility and Resistance to Hydrogen Embrittlement of Nb-Pd Based Alloys for Hydrogen Permeable Membrane (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Advanced materials research Vol. 26-28 (Oct. 2007), p. 873-876 
    Details
    ISSN: 1662-8985
    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 alloying effects of Pd on the hydrogen solubility and the resistance to hydrogenembrittlement are investigated for Nb-xmol%Pd-ymol%Zr (x=0~19; y=0, 1) alloys. The hydrogensolubility at 673 K is found to decrease with increasing Pd content in the alloys. Both pure Nb andNb-Pd alloys possessed ductility in vacuum at 673 K. However, severe hydrogen embrittlementoccurs in pure Nb when it is tested under the hydrogen pressure even as low as 0.01 MPa. In view ofthe small punch (SP) absorption energy, the addition of Pd into Nb improves the resistance tohydrogen embrittlement by decreasing the hydrogen solubility in the alloy, although brittle fracture isstill observed in the Nb-15mol%Pd alloy tested under a hydrogen pressure of 0.015 MPa at 673 K
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/40/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.26-28.873.pdf
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  • 8
    Electronic Resource
    Electronic Resource
    On a direct method for the solution of nearly uncoupled Markov chains (1991)
    Springer
    Numerische Mathematik 59 (1991), S. 1-11 
    Details
    ISSN: 0945-3245
    Keywords: AMS(MOS): Primary 65F05 ; 65G05 ; Secondary: 15A51
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Summary This note is concerned with the accuracy of the solution of nearly uncoupled Markov chains by a direct method based on the LU decomposition. It is shown that plain Gaussian elimination may fail in the presence of rounding errors. A modification of Gaussian elimination with diagonal pivoting and correction of small pivots is proposed and analyzed. It is shown that the accuracy of the solution is affected by two condition numbers associated with aggregation and the coupling respectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01385767
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  • 9
    Electronic Resource
    Electronic Resource
    Eigenvalues of graded matrices and the condition numbers of a multiple eigenvalue (1990)
    Springer
    Numerische Mathematik 58 (1990), S. 703-712 
    Details
    ISSN: 0945-3245
    Keywords: AMS(MOS): 65F15 ; CR: G1.3
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Summary This paper concerns two closely related topics: the behavior of the eigenvalues of graded matrices and the perturbation of a nondefective multiple eigenvalue. We will show that the eigenvalues of a graded matrix tend to share the graded structure of the matrix and give precise conditions insuring that this tendency is realized. These results are then applied to show that the secants of the canonical angles between the left and right invariant of a multiple eigenvalue tend to characterize its behavior when its matrix is slightly perturbed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01385650
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  • 10
    Electronic Resource
    Electronic Resource
    Influence of Ceria on the Thermally Durability of Pt/Rh Automotive Catalyst (1999)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 315-317 (July 1999), p. 194-203 
    Details
    ISSN: 1662-9752
    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/2011/0528/02/04/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.315-317.194.pdf
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