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  • 1975-1979  (5)
  • 1
    Electronic Resource
    Electronic Resource
    Effect of shear rate on activation rate of factor X (1978)
    Springer
    Annals of biomedical engineering 6 (1978), S. 60-67 
    Details
    ISSN: 1573-9686
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Technology
    Notes: Abstract The activation rates of Factor X in the intrinsic coagulation pathway and by RVV were measured in the stationary condition in a concentric cylinder device in a shear field and in a capillary flow reactor. The shear rates in the cylinder device were 70 and 140 sec−1 and the range of the flow rate in the flow reactor was from 0.59 to 1.20 cm3/min. The activation rates in the intrinsic pathway decreased with the increase of the shear rate and therefore with the liquid flow rate. On the other hand, the rate of activation by RVV did not vary in the shear field.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00000005
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Physical factors affecting microembolus formation in extracorporeal circulation (1976)
    Springer
    Annals of biomedical engineering 4 (1976), S. 60-67 
    Details
    ISSN: 1573-9686
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Technology
    Notes: Abstract Rates of microembolus formation in oxalated and heparinized blood in an agitated vessel, a bubble column, and a rotating disk gas-liquid contactor were studied by measuring the pressure required to filter the blood sample through a screen with a mesh size of 37 μm and the dry weight of microemboli retained on the screen. The rate of microembolus formation increased with the blood-gas contact area and the rate of surface renewal. Although the results are rather qualitative, the contribution of turbulence in blood seems relatively unimportant.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02363558
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Carbon dioxide transfer in a membrane blood oxygenator (1978)
    Springer
    Annals of biomedical engineering 6 (1978), S. 48-59 
    Details
    ISSN: 1573-9686
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Technology
    Notes: Abstract Rates of desorption of CO2 from bovine blood, as well as bovine serum, aqueous hemoglobin solutions, and water in a flat-plate-type experimental membrane blood oxygenator using silicone rubber and microporous polypropylene membranes were measured. The experimental data showed good agreement with the rigorous theoretical predictions based on an assumption that the CO2 transfer in the liquid phase is facilitated by simultaneous diffusion of bicarbonate ions produced by the instantaneous hydration of CO2 catalyzed by carbonic anhydrase existing in the red cells. Effects of screen turbulence promoters in the liquid channel were also studied. The overall resistance for CO2 transfer in membrane oxygenators including the blood phase resistance is usually smaller than that for oxygen transfer, unless the liquid phase mass transfer resistance is small relative to the membrane resistance. Thus, a membrane oxygenator designed on the basis of oxygen transfer rates will almost always have a sufficient capacity for CO2 transfer.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00000004
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    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Performance of affinity chromatography columns (1978)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 20 (1978), S. 267-280 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Performance of affinity chromatography columns was studied by measuring the rates of adsorption and elution of trypsin in a Sepharose 4B-soybean trypsin inhibitor column and a Sepharose 4B-arginine peptides column. The volumetric coefficient for trypsin transfer was evaluated from the break-through curves of trypsin, and elution profiles bed height of Sepharose 4B-STI column was estimated based on these results.
    Additional Material: 11 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260200209
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Elution of trypsin with an inhibitor in affinity chromatography (1979)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 21 (1979), S. 341-344 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260210220
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    Paper (German National Licenses)
    Fulltext
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