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  • Polymer and Materials Science  (2)
  • Keywords:Anodic dissolution; Bailby layer; Current density; Electrode gap; Electrolyte; Electropolishing  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Machining Characteristics of the Electropolishing of Stainless Steel (STS316L) (2000)
    Springer
    The international journal of advanced manufacturing technology 16 (2000), S. 591-599 
    Details
    ISSN: 1433-3015
    Keywords: Keywords:Anodic dissolution; Bailby layer; Current density; Electrode gap; Electrolyte; Electropolishing
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Electropolishing is an anodic dissolution process in the transpassive state. It removes non-metallic inclusions and improves the mechanical and corrosion resistance of stainless steel. If there is a Bailby layer, it will be removed and the true structure of the surface will be restored. Electropolishing is normally used to remove a very thin layer of material from the surface of a metal object. The aim of this study is to determine the characteristics of electropolishing stainless steel tubes in terms of current density, machining time, temperature, electrode gap, and workpiece surface roughness.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001700070049
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Role of protein and fatty acid adsorption on platelet adhesion and aggregation at the blood-polymer interface (1977)
    Hoboken, NJ : Wiley-Blackwell
    Journal of Biomedical Materials Research 11 (1977), S. 23-31 
    Details
    ISSN: 0021-9304
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine , Technology
    Notes: Thrombus formation on a foreign surface is a complicated process, involving many factors. However, there is little doubt that a foreign surface adsorbs plasma proteins upon blood contact and that the nature of this adsorbed layer may determine the mechanism of platelet adhesion and aggregation. The adhesion and aggregation of platelets play an important role in the initial events of thrombus formation on a foreign surface. In this work, adsorption studies using human blood plasma were done on several polymer surfaces. Some drugs which prevent platelet adhesion were utilized to verify the proposed mechanism for platelet adhesion which includes glycosyl transferase reaction. Also, adsorption and release of fatty acid salts, including fatty acid-bonded albumin, were investigated at different polymer interfaces. It is postulated that adsorbed fatty acid salts are released from the surface upon contact with plasma to form a high local concentration of fatty acid, and that this fatty acid suspension would cause platelet aggregation at the interface.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jbm.820110104
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    The antiplatelet activity of immobilized prostacyclin (1982)
    Hoboken, NJ : Wiley-Blackwell
    Journal of Biomedical Materials Research 16 (1982), S. 629-638 
    Details
    ISSN: 0021-9304
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine , Technology
    Notes: Owing to the chemical instability of prostacyclin, the direct immobilization of thsi prostaglandin has not been successful. A new procedure is described for the preparation of immobilized prostacyclin based on the conversion of immobilized prostaglandin F2α to immobilized prostaglandin I2. Materials thus prepared show dramatic antiplatelet effects with regard to platelet aggregation and platelet adhesion. Radioimmunoassays of plasmas used in in vitro platelet tests and of buffers used in prostacyclin leakage studies established that these effects are not due to the release of prostacyclin from the respective immobilization substrates.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jbm.820160510
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    Paper (German National Licenses)
    Fulltext
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