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  • 1
    Electronic Resource
    Electronic Resource
    Random Completely Generalized Set-Valued Implicit Quasi-Variational Inequalities (1999)
    Springer
    Positivity 3 (1999), S. 201-213 
    Details
    ISSN: 1572-9281
    Keywords: Random completely generalized set-valued implicit quasi-variational inequality ; random representation theorem ; random algorithm
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract The purpose of this paper is to introduce a class of new random completely generalized set-valued implicit quasi-variational inequalities, to construct new random iterative algorithms, and to give some existence theorems of random solutions for this class of random completely generalized set-valued implicit quasi-variational inequalities. We also prove the convergence of random iterative sequences generated by the algorithms. Our results extend and improve the earlier and recent results.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1009784323320
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  • 2
    Electronic Resource
    Electronic Resource
    Completely generalized nonlinear variational inclusions for fuzzy mappings (1999)
    Springer
    Czechoslovak mathematical journal 49 (1999), S. 767-777 
    Details
    ISSN: 1572-9141
    Keywords: variational inclusion ; fuzzy mapping ; algorithm ; existence ; convergence
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract In this paper, we introduce and study a new class of completely generalized nonlinear variational inclusions for fuzzy mappings and construct some new iterative algorithms. We prove the existence of solutions for this kind of completely generalized nonlinear variational inclusions and the convergence of iterative sequences generated by the algorithms.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1022449016937
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  • 3
    Electronic Resource
    Electronic Resource
    Blood Compatibility of Chitosan Immobilized on Poly(Ethylene Terephthalate) Surface Modified by Plasma and Ultraviolet Grafting (2005)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 288-289 (June 2005), p. 327-330 
    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: We report a study involving chitosan chains immobilized on poly (ethyleneterephthalate) (PET) films by plasma and ultraviolet (UV) grafting modification. The surface structure of the modified PET is determined by means of attenuated total reflection Fourier transform infraed spectroscopy (ATR-FTIR) and X-ray photoelectron spectroscopy (XPS). The results show that the chains of chitosan are successfully grafted on the surface of PET. Platelet adhesion evaluation in vitro is conducted to examine the blood compatibility in vitro. Scanning electron microscopy (SEM) and optical microscopy reveal that the amounts ofadhered, aggregated and morphologically changed platelets are reduced on thechitosan-immobilized PET films. The number of platelet adhered on the modified film isreduced by almost 48% compared to the amount of platelets on the untreated film. Our result thus shows that chitosan immobilized on the PET surface improves blood compatibility
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/49/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.288-289.327.pdf
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  • 4
    Electronic Resource
    Electronic Resource
    Surface Characterization and Antibacterial Evaluation of Poly(Ethylene Terephthalate) Modified by Chitosan-Immobilization (2005)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 288-289 (June 2005), p. 331-334 
    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: Biomedical PET films were modified by the approach of chitosan-surface-grafting.Attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR) and X-ray photoelectron spectroscopy (XPS) revealed that chitosan molecules were successfully grafted on the PET surface. The bacterial adhesion on the modified surface was evaluated by bacteria plate counting in vitro and scanning electron microscopy (SEM). The results testified that chitosan did make the surface of PET become more antibacterial. The free energy of adhesion (∆Fadh) between the bacteria and the chitosan-immobilized surface of PET was calculated. The value of the ∆Fadh was positive, which suggests that the process of bacterial adhesion on the modified PET surface was not thermodynamically favorable, namely, not spontaneous
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/49/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.288-289.331.pdf
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  • 5
    Electronic Resource
    Electronic Resource
    Hemocompatibility of PET (Polyethylene Terephthalate) Films Grafted PEG (Polyethylene Glycol) by Plasma Surface Modification (2005)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 288-289 (June 2005), p. 339-342 
    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, polyethylene glycol (PEG) of various different molecular weights was grafted onto PET films using plasma surface grafting modification. The surface structure of PEG-grafted PET films was analyzed by attenuated total reflection Fourier transform infrared spectroscopy (ATR-FTIR) and X-ray photoelectron spectroscopy (XPS), suggesting that the surface structure and composition of PET films changes due to the presence of PEG. Blood compatibility was characterized by in vitro platelet adhesion experiments and coagulation factors. The tests of platelet adhesion and coagulation factors in vitro suggest that PEG grafted onto polymer surfaces can improve the blood compatibility of PET films remarkably. The modified PET films were pre-coated with albumin and fibrinogen respectively; platelet adhesion tests in vitro then indicated that samples pre-coated with albumin have better blood compatibility than with fibrinogen, resulting in the conclusion that the albumin can improve blood compatibility. The contact angle of PEG-grafted films was measured by the sessile drop method and the surface free energy andinterface free energy were induced. It is indicated that the PEG-grafted PET films have the characteristic of preferentially adsorbing albumin
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/49/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.288-289.339.pdf
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  • 6
    Electronic Resource
    Electronic Resource
    Surface Characterization and In Vitro Blood Compatibility of Poly(Ethylene Terephthalate) Immobilized with Hirudin (2005)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 288-289 (June 2005), p. 421-424 
    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: Poly(ethylene terephthalate) films were exposed under argon plasma glowdischarge and induced polymerization of acrylic acid (AA) in order to introduce carboxylic acid group onto PET (PET-AA) assisting by ultroviolet radiation. Hirudin-immobilized PETs were prepared by the grafting of PET-AA, followed by chemical reaction with hirudin. The surface structure of the treated PET is determined by X-ray photoelectron spectroscopy (XPS). The wettability and surface free energy, interface free energy of the films is investigated by contact angle measurement. Platelet adhesion evaluatiion is conducted to examine the blood compatibility in vitro. Scanning electron microscopy (SEM) and optical microscopy reveal that the amounts of adhered, aggregated and morphologically changed platelets are reduced on hirudin-immobilized PET films
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/49/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.288-289.421.pdf
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  • 7
    Electronic Resource
    Electronic Resource
    The Microstructure and Mechanical Properties of Ti/TiN Multilayer Film Synthesized by Unbalanced Magnetron Sputtering Deposition on 17-4PH Stainless Steel (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 353-358 (Sept. 2007), p. 1700-1703 
    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: Ti/TiN multilayer films were synthesized on 17-4PH stainless steel using unbalancedmagnetron sputtering. The modulation periods is ranged from 100nm to 350 nm. The microstructureof the multilayer films was analyzed by X-ray diffraction. The cross-section views of the multilayerfilms were studied by scanning electron microscope (SEM). The microhardness and wear resistanceof the films were measured by a HXD-1000 microhardness tester and ball-on-disk wear tester. Thecorrosion resistance of the multilayer films was evaluated by potentiodynamic polarization scans ina 3% NaCl solution. The results showed that there was TiNx intergradation layer in the films. Themicrohardness and the wear resistance of the multilayer films increased with the layer number. TheTi/TiN multilayer can improve the corrosive resistance of the 17-4PH stainless steel
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/55/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.353-358.1700.pdf
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  • 8
    Electronic Resource
    Electronic Resource
    Studying the Expansion Uniformity of Intravascular Stents by the Effect of Laser Cutting Error (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 375-376 (Mar. 2008), p. 495-499 
    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: Laser cutting error has large influence on the beam width of intravascular stents. Minorrandom variation in beam width of stents may significantly impact the expansion uniformity. In thispaper, the relevant factors that may affect the beam width during the manufacture are investigated.Based on the randomization model, the pattern how the factors affect expansion uniformity isexplored, and the method for calculating uniformity index is proposed. A detailed computation ismade on the width randomization for the two expansion elements. The results show that with theincrease of the value range of beam width, probability of uniformity index decreases gradually; thestrengthening factor has large effect on the expansion uniformity. The method is meaningful forstudying how the processing error affects expansion uniformity
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/57/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.375-376.495.pdf
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  • 9
    Electronic Resource
    Electronic Resource
    Adhesion Evaluation of Titanium Oxides Films on 316L Stainless Steel Substrate (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 353-358 (Sept. 2007), p. 2127-2130 
    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: Titanium oxides films were deposited on tensile sample and vascular stents made of 316Lstainless steel by unbalanced magnetron sputtering. The effects of structures, deposition temperature,Ti interlayer and thickness on the adhesion of titanium oxide films were investigated by tensile tests.The results revealed that the structure of the Ti-O films affect their adhesion dramatically. TiO filmis brittle and fragile, lacking ability of deformation. Therefore its adhesion was worse than that ofTiO2 film. The higher substrate temperature was helpful to improve adhesion of film, the adhesionof the TiO film deposited at 673K was better than those of the TiO films deposited at 323K and473K. The adhesion of the TiO film with Ti interlayer was better than the one without interlayer.The introduction of Ti interlayer was beneficial to adhesion of film. The adhesion of thinner TiO2film was better than that of thicker one. TiO2 film deposited on stents had good adhesion. Afterexpansion, the film didn’t crack and peel off. TiO2 film has potential application on the vascularstents for improving its blood compatibility
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/55/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.353-358.2127.pdf
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  • 10
    Electronic Resource
    Electronic Resource
    The Influence of the Magnetic Field Arrangement on the Titanium Oxide Films Properties for Four Targets Closed-Filed Unbalance Magnetron Sputtering (2008)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 373-374 (Mar. 2008), p. 138-141 
    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 magnetic filed arrangement of unbalance magnetron sputtering can be changedemployed to expand the plasma region and induce more ions to bombard the films for fabricatingexcellent quality films. In this paper, four targets closed-filed unbalance magnetron sputtering wasintroduced, the effect of the different magnetic field arrangement on the titanium oxide filmsproperties was investigated. By changing the distance from target to vacuum center, the differentunbalance state of the magnetic field was formed around the substrate. The titanium oxide films weresynthesized at different unbalance state of the magnetic field. The microstructure of the titaniumoxide films was studied by X-Ray Diffraction (XRD), and the residual stress measurement for thefilms was determined by grazing incidence XRD. The results revealed that the higher unbalance of themagnetic field around the substrate, the higher ion current of the substrate. Comparing with increasingthe substrate bias voltage, the ion current increased 2~4 times through changing magnetic fieldarrangement to induce higher unbalance of the magnetic field. Ion/atom ratio increase was in favor ofrutile phase formation for titanium oxide film. The unbalance state increase resulted in more highercompressive stress in the films
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/57/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.373-374.138.pdf
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