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  • 1
    Electronic Resource
    Electronic Resource
    Spectroscopic evidence of a net formation of MV+ via photolysis of Ru(bpy)32+ and MV2+ adsorbed on porous Vycor glass (1987)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 109 (1987), S. 1582-1583 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja00239a055
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  • 2
    Electronic Resource
    Electronic Resource
    Spectroscopic and electrochemical properties of dimeric Ruthenium(II) diimine complexes and determination of their excited state redox properties (1987)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 109 (1987), S. 2691-2697 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja00243a023
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Bioactive Gelatin-Siloxane Hybrids as Tissue Engineering Scaffold (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Solid state phenomena Vol. 111 (Apr. 2006), p. 13-18 
    Details
    ISSN: 1662-9779
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Physics
    Notes: Ca2+-containing porous gelatin-siloxane hybrids were prepared using sol-gel process, post-gelation soaking, and freeze-drying. The porosity and pore size of the hybrids could be well controlled by the freezing temperature and the pH value of the soaking solution. The pore characteristics were related to the structure change during the soaking treatment. A bone-like apatite layer was able to form in the Ca2+-containing porous gelatin-siloxane hybrids upon soaking in a stimulated body fluid. The porous gelatin-siloxane hybrids could release gentamicin sulfate which isan antibiotic drug in bone chemotherapy. Thus, those hybrid materials are proposed to find application as novel bioactive and biodegradable scaffolds in bone tissue engineering
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/22/transtech_doi~10.4028%252Fwww.scientific.net%252FSSP.111.13.pdf
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  • 4
    Electronic Resource
    Electronic Resource
    Investigation on Creep Damage of Natural Gas Storage in Salt Rock Layer (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 324-325 (Nov. 2006), p. 451-454 
    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: To research the creep behavior of salt rock, the uniaxial and triaxial creep experimentswere carried out under different deviatoric stresses and same confining pressure or different confiningpressures and same deviatoric stress. The experiment results showed that the analysis on the creepdamage of salt rock should consider the influence of confining pressure and deviatoric stress. Byintroducing the damage variable to the Norton Power law of salt rock, a new constitutive law of saltrock was presented. The damage equivalent stress was the function of the confining pressure and thedeviatoric stress in the new constitutive law. The constitutive law can embody the steady creep andaccelerative creep of salt rock, in which the parameters are obtained by simulating the experimentaldata of salt rock in some salt mine. The theoretic results are in good agreement with the experimentalresults.The new constitutive law was embedded in the three dimension numerical codes. The natural gasstorage in the salt mine was analyzed by the new constitutive law. The evolvement law of damagebound and the displacement law around the natural gas storage were studied under the minimalnatural gas storage pressure. The continuous operating time of the natural gas storage was alsoanalyzed under the pressure. The research conclusions are expected to be applied in the natural gasstorage projects in salt rock layer
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/52/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.324-325.451.pdf
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  • 5
    Electronic Resource
    Electronic Resource
    Influence of Pressure on the Crystallization in SiO〈sub〉2f〈/sub〉/SiO〈sub〉2〈/sub〉 Composites (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 336-338 (Apr. 2007), p. 1236-1238 
    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 influence of pressure on the crystallization behavior in SiO2f/SiO2 composites hotpressedat 1350°C was studied. The crystalline phase composition analysis on SiO2f/SiO2 compositesrevealed that the formation of cristobalite was promoted when the hot-pressing pressure ≤ 12 MPa,however suppressed with higher pressure applied. It can be ascribed to the nucleation mechanismchange from surface nucleation to bulk nucleation. Analysis on relative density as well as fracturemicrostructure of SiO2f/SiO2 composites confirmed the conclusion
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/53/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.336-338.1236.pdf
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  • 6
    Electronic Resource
    Electronic Resource
    Synthesis, Characterization and Controlled Drug Release of Thermosensitive Poly(NIPAAm-co-HEMA) and IPN(NIPAAm/HEMA) Hydrogels (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Advanced materials research Vol. 11-12 (Feb. 2006), p. 737-740 
    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: A series of thermo-sensitive copolymers and interpenetrating network hydrogels wereprepared using PNIPAAm and HEMA.The effects of the PNIPAAm/HEMA ratio on the swellingratio ,and deswelling and reswelling kinetics of gels at different temperatures and drug releasecharacteristics in vitro were discussed. The results showed that the copolymer and IPN hydrogelsexhibited thermo-sensitive swelling characteristics. Therefore, the hydrogels may be useful in thecontrolled drug delivery systems
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/39/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.11-12.737.pdf
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  • 7
    Electronic Resource
    Electronic Resource
    Interfacial Cracks of Antiplane Sliding Mode between Usual Elastic Materials and Quasicrystals (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 340-341 (June 2007), p. 453-458 
    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 present study deals with the problem of interfacial cracks of antiplane sliding modebetween a usual elastic material and a one-dimensional hexagonal quasicrystal. Based on the physicalfacts that balance of the phason stress field is foreign to the real force in or out of quasicrystal inphysical space, and the quasicrystal is bonded to a usual elastic material without both phasondisplacement and stress fields, the problem is described by analytic functions and attributed to findsolutions of the Riemann-Hilbert problem. It is found that the stress intensity factor is not related tophason strain field, and the phason stress field does not exist. The discontinuity of phonondisplacement field across crack is related to the phason displacement field because of the coupling ofphonon and phason strain fields. Although there is not the phason displacement on the bonded portionof interface, it exists on the crack’s surface. The energy release rate obtained from interfacial crack’spropagating is different from that of an interfacial crack between two different pure elastic materials
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/54/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.340-341.453.pdf
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  • 8
    Electronic Resource
    Electronic Resource
    The Design of Functional Gradient Materials with Inverse Homogenization Method (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Advanced materials research Vol. 32 (Feb. 2008), p. 245-250 
    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: This study systemically presents an inverse homogenization method in the design offunctional gradient materials, which gained substantial attention recently due to their layer-by-layerdefined physical properties. Each layer of these materials is unilaterally constructed by periodicallyextended microstructural elements (namely base cells), whose effective properties can be decidedby the homogenization theory in accordance with the material distribution within the base cell. Thedesign objective is to minimize the summation of the least squares of the difference betweencorresponded entries in target and effective elasticity tensors. The method of moving asymptotedrives the minimization of this positive objective function, which forces the effective valuesapproach to the targets as closely as possible. The sensitivity of the effective elasticity tensors withrespect to the design variables is derived from the adjoint variable method and it guides theminimization algorithm efficiently. To guarantee the connectivity between adjacent layers,non-design domains occupied by solid materials acting as connective bars are fixed in the design ofbase cells. Furthermore, nonlinear diffusion technique is introduced to avoid checkerboard patternsand blur boundaries in the microstructures. A series of two-dimensional examples targeted for theelasticity tensors with same extreme Poisson ratios but different densities in each layer areillustrated to highlight the computational material design procedure
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/40/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.32.245.pdf
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  • 9
    Electronic Resource
    Electronic Resource
    Design of Periodic Microstructural Materials by Using Evolutionary Structural Optimization Method (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Advanced materials research Vol. 32 (Feb. 2008), p. 279-283 
    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: Despite significant success in developing various periodic composites, the challengeremains how to more efficiently design the base cell so that one or more physical properties can beattained. In this paper, the material design problem is formulated in a form of the least square of thedifference between the targeted and designed values. By minimizing the objective subject to volumeconstraints and periodic boundary conditions, an optimal material distribution in base cell can begenerated. Different from existing methods, this paper shows how to use the EvolutionaryStructural Optimization (ESO) method to design composite material attaining to thermalconductivity defined by the Hashin-Strikman (H-S) bounds. The effectiveness of this method isdemonstrated through several 2D examples, agreeing well with commonly known benchmarkingmicrostructures
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/40/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.32.279.pdf
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  • 10
    Electronic Resource
    Electronic Resource
    Modification of Coherent Gradient Sensing (CGS) to Accurately Get the Fringe Order (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 326-328 (Dec. 2006), p. 171-174 
    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: In this paper, a novel optical method, namely, Coherent Gradient Sensing (CGS) is usedto study the fracture properties of IR window materials in the guidance missile. CGS can producehigh contrast fringes and provide some degree of control on the sensitivity of measurement duringexperiment. It is highly attractive for solid mechanics applications, especially to new materials, suchas IR window materials. But the accuracy of the fringe order in the CGS interference image willdeeply influence the precision of experiment. Because of the different optical principle from othermethod, the fringe order of CGS can’t be obtained through the phase-shift technology. To satisfythe precision request of IR window materials, a kind of modified CGS method, loading CGSmethod is introduced and analyzed, which can accurately obtain the fringe order of random positionin the CGS interference image. This method doesn’t need additional optical set-up and complicatedimage processing techniques, but only need two CGS interference images under different loading.Static fracture experiments of ZnS show that this method can evidently improve the precision of theCGS method
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/52/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.326-328.171.pdf
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