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  • 1
    Electronic Resource
    Electronic Resource
    The effects of human tear electrolytes on the viability and hydrogel colonization of Pseudomonas aeruginosa and Staphylococcus aureus (2000)
    Springer
    Journal of industrial microbiology and biotechnology 25 (2000), S. 17-19 
    Details
    ISSN: 1476-5535
    Keywords: Keywords: electrolyte; bacteria; S. aureus; P. aeruginosa; adhesion; bactericidal
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: This study was designed to evaluate the effects of the inorganic electrolytes present in human tear film on the viability and colonization of bacteria to hydrogels. Pseudomonas aeruginosa and Staphylococcus aureus were used in these experiments. A D-value test was performed to investigate any bacteriostatic effect by measuring the reduction of viable test microorganisms over time when exposed to the inorganic electrolyte solution. No D-value was calculable for S. aureus in electrolyte solution whereas a D-value of 8.1 h was obtained for P. aeruginosa in electrolyte solution. The D-value data indicate that staphylococci have a greater survivability potential in a hypertonic environment than do pseudomonads. Bacterial adhesion to high water, ionic hydrogels was studied using the Modified Robbins Device (MRD). The data for P. aeruginosa recovered from the lenses showed an 82% decrease in bacterial counts in electrolyte solution as compared to bacteria incubated in control solution. In contrast there were slight increases in S. aureus counts recovered from the lenses. Journal of Industrial Microbiology & Biotechnology (2000) 25, 17–19.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/sj.jim.7000016
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  • 2
    Electronic Resource
    Electronic Resource
    Bacterial adhesion measurements on soft contact lenses using a Modified Vortex Device and a Modified Robbins Device (1995)
    Springer
    Journal of industrial microbiology and biotechnology 15 (1995), S. 243-247 
    Details
    ISSN: 1476-5535
    Keywords: adhesion ; contact lens ; bacteria ; isoenzyme ; hydrogel
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract S. marcescens 8100 andP. aeruginosa 15442 were used to study bacterial adhesion to hydrogel contact lenses which had not been worn. Bacterial removal from unworn lens materials was assessed with a calibrated vortex device modified with a digital rpm readout and fitted with a test tube attachment (MVD). The MVD, which relies on a whirlpool-like force to remove the bacteria, showed that bacteria adhered to the same degree to etafilcon A, vifilcon A and polymacon lenses under standardized conditions. Tracking the isoenzyme patterns of these bacterial species over time showed instability ofS. marcescens upon repeated passage. This instability was not evident withP. aeruginosa. Bacterial adhesion ofP. aeruginosa 15442, to human worn and unworn etafilcon A materials was determined with a Modified Robbins Device. The MRD was closed off at both ends stopping medium and bacterial movement after 1 h of fluid flow over the lens surface. The results show that immediately following this 1-h period more bacteria adhere to unworn contact lenses than to worn lenses. However, bacterial counts were equivalent on worn and unworn lenses following 5 h of static incubation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01569831
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  • 3
    Electronic Resource
    Electronic Resource
    Pesticide levels of patients on chronic hemodialysis (1976)
    Springer
    Bulletin of environmental contamination and toxicology 16 (1976), S. 556-558 
    Details
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01685363
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  • 4
    Electronic Resource
    Electronic Resource
    Abbau von Nicotin bei hamster und Ratte (1969)
    Springer
    Naturwissenschaften 56 (1969), S. 418-418 
    Details
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00593629
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  • 5
    Electronic Resource
    Electronic Resource
    Het prijzenstelsel in Rusland (1946)
    Springer
    De economist 94 (1946), S. 517-535 
    Details
    ISSN: 1572-9982
    Source: Springer Online Journal Archives 1860-2000
    Topics: Economics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02200652
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  • 6
    Electronic Resource
    Electronic Resource
    Coronal streamers' theories (1994)
    Springer
    Space science reviews 70 (1994), S. 233-239 
    Details
    ISSN: 1572-9672
    Keywords: Corona ; MHD-Sun ; Sun-magnetic fields ; Streamers
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Some theoretical aspects of solar coronal streamers are discussed with emphasis on the current sheet and reconnection processes going on along the axis of the streamer. The dynamics of the streamer is a combination of MHD and transport, with acceleration of particles due to reconnection and leakage of plasma outwards as a “slow” solar wind as the observable results. The presence of the almost-closed magnetic bottles of streamers that can store high-energy particles for significant times provides the birdcage for solar cosmic rays, the reconnection in the sheet feeds medium-energy protons into the corona for the large-scale storage needed for certain flare models, and the build-up of excess density sets the stage for coronal mass ejections.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00777874
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  • 7
    Electronic Resource
    Electronic Resource
    Bacterial colonization of rigid gas permeable and hydrogel contact lenses by Staphylococcus aureus (2000)
    Springer
    Journal of industrial microbiology and biotechnology 24 (2000), S. 113-115 
    Details
    ISSN: 1476-5535
    Keywords: Keywords: adhesion; bacteria; hydrogel; contact lens
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Staphylococcus aureus ATCC 6538 and a clinical isolate of S. aureus from a bacterial keratitis patient were examined for their ability to adhere to etafilcon A, polymacon, silafocon, and pauflufocon A, B and C contact lenses. Both isolates adhered more to the rigid gas permeable (RGP) materials than to the hydrogel lenses tested (P 〈 0.05). S. aureus ATCC 6538 adhered to the etafilcon A material to a greater extent than did the clinical isolate (P 〈 0.05). there were no statistically significant differences in the recovery of staphylococci from unworn lens materials when surface area, composition and ionicity were evaluated for either the hydrogel or rgp lenses tested against lenses of a similar type. however, differences were observed when hydrogel lenses were evaluated against rgp lenses (P 〈 0.05). these differences may be related to water content. Journal of Industrial Microbiology & Biotechnology (2000) 24, 113–115.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/sj.jim.2900787
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  • 8
    Electronic Resource
    Electronic Resource
    Ein neuer guter Bürger der Flora von Wien (1852)
    Springer
    Plant systematics and evolution 2 (1852), S. 10-12 
    Details
    ISSN: 1615-6110
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02054268
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  • 9
    Electronic Resource
    Electronic Resource
    UeberDoronicum Nendtwichii Sadler (1854)
    Springer
    Plant systematics and evolution 4 (1854), S. 410-412 
    Details
    ISSN: 1615-6110
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02061098
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  • 10
    Electronic Resource
    Electronic Resource
    Anzeige (1856)
    Springer
    Plant systematics and evolution 6 (1856), S. 159-159 
    Details
    ISSN: 1615-6110
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02060170
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