Search Results - (Author, Cooperation:Y. W. Tang)

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  1. 1
    Staff View
    Publication Date:
    2014-10-31
    Publisher:
    Nature Publishing Group (NPG)
    Print ISSN:
    0028-0836
    Electronic ISSN:
    1476-4687
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Published by:
    http://www.nature.com/

    Latest Papers from Table of Contents or Articles in Press
  2. 2
    H. B. Li ; K. H. Yuen ; F. Otto ; P. K. Leung ; T. K. Sridharan ; Q. Zhang ; H. Liu ; Y. W. Tang ; K. Qiu
    Nature Publishing Group (NPG)
    Published 2015
    Staff View
    Publication Date:
    2015-03-31
    Publisher:
    Nature Publishing Group (NPG)
    Print ISSN:
    0028-0836
    Electronic ISSN:
    1476-4687
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Published by:
    http://www.nature.com/

    Latest Papers from Table of Contents or Articles in Press
  3. 3
    T. C. Chan, Cherie H. C. Chan, W. Y. Tang, N. W. Chang
    American Chemical Society (ACS)
    Published 2018
    Staff View
    Publication Date:
    2018-09-25
    Publisher:
    American Chemical Society (ACS)
    Electronic ISSN:
    1520-5207
    Topics:
    Chemistry and Pharmacology
    Physics
    Published by:
    http://pubs.acs.org/

    Latest Papers from Table of Contents or Articles in Press
  4. 4
    Staff View
    Publication Date:
    2018-04-27
    Publisher:
    The American Society for Microbiology (ASM)
    Print ISSN:
    0066-4804
    Electronic ISSN:
    1098-6596
    Topics:
    Biology
    Medicine
    Published by:
    http://www.asm.org/

    Latest Papers from Table of Contents or Articles in Press
  5. 5
    Zhou, J. W. ; Li, Y. T. ; Tang, Y. W. ; Song, X. Q.
    Springer
    Published 1995
    Staff View
    ISSN:
    1572-8927
    Keywords:
    DMF ; DMSO ; 1,4-dioxane ; merocyanine ; chelating reaction ; linear correlation ; solvatochromism
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Chemistry and Pharmacology
    Notes:
    Abstract Solvatochromism and chelating reaction of a benzothiazoline merocyanine are studied by UV-VIS spectra in DMF-H2O, DMF-1,4-dioxane and DMSO-1,4-dioxane. The effect of solvent polarity on UV-VIS absorption maxima and on equlibrium constant K of the chelating reaction is discussed. A linear correlation is obtained between lnK and ET.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/BF00973446

    Articles: DFG German National Licenses
  6. 6
    Staff View
    ISSN:
    1432-8798
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Medicine
    Notes:
    Summary Polymerase chain reaction (PCR) assay and other techniques were applied to differentiate Hantavirus strains isolated from different animal hosts and geographic regions in China. Two groups of related strains, Hantaan and Seoul, have been classified by cross-neutralization, radioimmunoprecipitation (RIP), and sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) assays. The molecular weights of glycoprotein 1 (G1) of Hantaan and Seoul viruses were 72k and 80k, whereas those of the nucleocapsid (N) and glycoprotein 2 (G2) remained the same, respectively. The PCR assay was used to differentiate these isolates using synthetic oligonucleotide primers selected from various regions of the M genome of 76118 and R22 strains. 76118-specific primers amplified only the RNAs extracted from Hantaan strains while R22-specific primers, the RNAs from Seoul strains. The PCR results for classification are consistent with those obtained by cross-neutralization, RIP and SDS-PAGE assays.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/BF01310621

    Articles: DFG German National Licenses
  7. 7
    Tang, Y. W.
    Springer
    Published 1991
    Staff View
    ISSN:
    1432-8798
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Medicine
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/BF01310776

    Articles: DFG German National Licenses
  8. 8
    Tang, Y. W. ; Santerre, J. P. ; Labow, R. S. ; Taylor, D. G.

    New York, NY [u.a.] : Wiley-Blackwell
    Published 1996
    Staff View
    ISSN:
    0021-8995
    Keywords:
    Chemistry ; Polymer and Materials Science
    Source:
    Wiley InterScience Backfile Collection 1832-2000
    Topics:
    Chemistry and Pharmacology
    Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Physics
    Notes:
    Polyurethanes are one of the most important classes of thermoplastic elastomers and have been widely used in medical-device manufacturing as well as in other applications. However, their function can be limited, particularly under environmental conditions that render them susceptible to hydrolysis. Using polymeric additives that are hydrolytically stable may be one approach to modifying the surface of polyurethanes for the purpose of improving their hydrolytic resistance without compromising their structural features. In this paper, the development of a series of novel fluorine-containing polyurethane surface modifying macromolecules (SMMs) is described and their synthesis conditions are investigated. The material structure and mixing properties of the synthesized SMMs with base polyurethanes was dependent on the reactant stoichiometry and concentration for the SMM components, as well as the reaction temperature and the amount of catalyst used in the SMM synthesis. This study describes the use of low surface energy components (fluorinated tails) which showed selective migration towards the surface when added to a polyester-urea-urethane. These novel macromolecules generated a nonwettable surface while not significantly altering the apparent bulk structure of the base polymer. The advancing and receding contact angle results indicated that the surface of these modified polyurethanes showed wettability characteristics similar to that of Teflon. TM The differential scanning calorimetry thermograms for the mixtures of the SMM with the polyurethane showed that, at 5% w/w SMM in the base polyurethane, the thermal transitions were similar to that of the native base polyure-thane, indicating that the additives had no detectable effect on the polyurethane structure. © 1996 John Wiley & Sons, Inc.
    Additional Material:
    9 Ill.
    Type of Medium:
    Electronic Resource

    Articles: DFG German National Licenses
  9. 9
    Tang, Y. W. ; Santerre, J. P. ; Labow, R. S. ; Taylor, D. G.

    Hoboken, NJ : Wiley-Blackwell
    Published 1997
    Staff View
    ISSN:
    0021-9304
    Keywords:
    Chemistry ; Polymer and Materials Science
    Source:
    Wiley InterScience Backfile Collection 1832-2000
    Topics:
    Medicine
    Technology
    Notes:
    Polyurethanes are widely used as biomaterials for medical implants because of their excellent mechanical properties and moderate biocompatibility. However, the demand for more bioresistant and biocompatible polyurethanes to meet the needs of long-term implant devices still remains an important issue. Since most biological interactions with materials occur at the interface, a significant number of studies for improving the biocompatibility of polyurethanes have concentrated on surface modification. It is well known that additives used in polymeric materials as processing aids, mold releasing agents, antioxidants, etc., migrate to the surface and change the surface properties of the material. Under certain conditions polymeric additives may also migrate toward surfaces. This study describes two fluorine-containing, surface-modifying macromolecules (SMMs) that have been evaluated for their ability to inhibit polyurethane degradation. These materials actively migrate to the upper surface of a material film when they are mixed with a base polymeric material. Contact angle measurements for the mixture of SMM with base polyurethane indicate that the surface becomes more hydrophobic after adding the SMMs, while X-ray photoelectron spectroscopy analysis shows an enrichment of fluorine on the polymer surfaces. Differential scanning calorimetry thermograms indicate that the microstructure, as defined by the thermal transitions of the base polymer, are not altered by the addition of SMMs. Enzyme-induced biodegradation tests exhibit a significant reduction of polyurethane degradation in the presence of these surface-resident materials. The results indicate that the SMMs have the potential to resist hydrolytic degradation mediated by lysosomal enzymes while generating a surface chemistry on the native elastomer which is similar in nature to that of a fluoropolymer, e.g., Teflon. © 1997 John Wiley & Sons, Inc.
    Additional Material:
    7 Ill.
    Type of Medium:
    Electronic Resource

    Articles: DFG German National Licenses