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  • 1
    Electronic Resource
    Electronic Resource
    Extensive and deep dermatophytosis caused by Trichophyton mentagrophytes var. Interdigitalis in an HIV-1 positive patient (2000)
    Oxford, UK : Blackwell Science Ltd
    Journal of the European Academy of Dermatology and Venereology 14 (2000), S. 0 
    Details
    ISSN: 1468-3083
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Background Cutaneous infections are common in HIV-1 positive patients and are usually severe, recurrent, and caused by microorganisms that are unusual in immunocompetent patients. Objective We report a case of an HIV-1-positive 23-year-old male, with a history of intravenous drug use, in stage C-II (CDC ‘86), with a CD4 lymphocyte count of 335 cells/mm3. He had multiple, large erythematous, circinate and pustular plaques on his abdomen, back, arms and legs. Results We isolated Trichophyton mentagrophytes var. interdigitalis from the lesions. The biopsy showed suppurative deep dermatophytosis and folliculitis. The patient satisfactorily responded to itraconazole (100 mg/d for 14 days). Conclusion This is the first reported case of deep dermatophytosis caused by T. mentagrophytes in an HIV-positive patient.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1468-3083.2000.00015.x
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  • 2
    Electronic Resource
    Electronic Resource
    Pemphigus vulgaris and disseminated nocardiosis (2000)
    Oxford, UK : Blackwell Science Ltd
    Journal of the European Academy of Dermatology and Venereology 14 (2000), S. 0 
    Details
    ISSN: 1468-3083
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Infectious diseases, in particular septicaemia from Staphylococcus aureus, Proteus vulgaris and Pseudomonas aeruginosa, are the most severe and frequent complications for the immunosuppressive therapy of pemphigus. Infection by Nocardia asteroides in subjects with pemphigus vulgaris is rare. We report the sixth case found of such an association; the subject died of disseminated nocardiosis while receiving steroids and immunosuppressive drugs, 4 years after being diagnosed with chronic pemphigus vulgaris.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1468-3083.2000.00114.x
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  • 3
    Electronic Resource
    Electronic Resource
    Mixotrophic growth of Phaeodactylum tricornutum on glycerol: growth rate and fatty acid profile (2000)
    Springer
    Journal of applied phycology 12 (2000), S. 239-248 
    Details
    ISSN: 1573-5176
    Keywords: eicosapentaenoic acid ; microalga ; mixotrophic growth ; Phaeodactylum tricornutum
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Mixotrophic growth of the eicosapentaenoic acid (EPA)producing diatom Phaeodactylum tricornutum UTEX640 was carried out in 1-L batch cultures under anexternal irradiance of 165 μmol photons m-2s-1 by supplementing the inorganic culture mediumwith glycerol. The effect on the growth and the fattyacid profile was studied for different initialglycerol concentrations (0–0.1 M). The optimalglycerol concentration was 0.1 M.A lag phase was observed at high glycerolconcentrations. The present study also shows thatsuccessive additions of glycerol at 0.1M concentrationand using ammonium chloride as a nitrogen sourceremarkably increased the maximum biomass concentration(16.2 g L-1) and maximum biomass productivity(61.5 mg L-1 h-1). These values wererespectively 9 and 8-fold higher than in thephotoautotrophically grown control. The level ofsaponifiable lipids in mixotrophically cultured cellswas significantly higher than in photoautotrophicallycultured cells and increased with the glycerolconcentration in the medium. The concentration ofstorage lipids, saturated and monounsaturated fattyacids, were enhanced but the EPA content did notchange significantly. The EPA content was around 2.2%of biomass dry weight. The maximum EPA yield was33.5 mg L-1 d-1 and was obtained in aculture containing 0.1 M glycerol, supplementedperiodically by ammonium chloride. This productivitywas 10-fold higher than the EPA productivity obtainedunder mixotrophic conditions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1008123000002
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  • 4
    Electronic Resource
    Electronic Resource
    Assessment of the photosynthetically active incident radiation on outdoor photobioreactors using oxalic acid/uranyl sulfate chemical actinometer (2000)
    Springer
    Journal of applied phycology 12 (2000), S. 385-394 
    Details
    ISSN: 1573-5176
    Keywords: actinometry ; incident photon flux ; photobioreactor
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A simple actinometric method was evaluated formeasuring the photosynthetically active incidentphoton flux on outdoor photobioreactors. The method isbased on uranyl sulfate catalyzed photodecompositionof oxalic acid in presence of light. The uranyl–oxalate chemical actinometer absorbs radiation ofwavelengths below 535 nm. In the present work, thephotobioreactor wall material did not transmit lightenergy of wavelengths below 350 nm and the effectiveabsorptivity method was used to evaluate the photonflux between 350–535 nm. The standard solar spectrumof the American Society for Testing and Materials(ASTM) was employed for estimating the ratio betweenthe photosynthetically active radiation (400–700 nm)and the solar radiation in the 350–535 nm range. Thisratio (2.21) was taken to be equal to the quotientbetween the photosynthetically active radiation (PAR)and the incident photon flux on the photobioreactor'ssurface (for the solar radiation between 350–535 nm).PAR measurements with 4π spherical and 2πquantum sensors were used to validate the method.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1008153630822
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  • 5
    Electronic Resource
    Electronic Resource
    Scale-up of tubular photobioreactors (2000)
    Springer
    Journal of applied phycology 12 (2000), S. 355-368 
    Details
    ISSN: 1573-5176
    Keywords: light/dark cycles ; microalgae ; Phaeodactylum tricornutum ; photobioreactors, scale-up
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The effect of the light/dark cycle frequency on theproductivity of algal culture at differentday-averaged irradiance conditions was evaluated forPhaeodactylum tricornutum grown in outdoortubular photobioreactors. The photobioreactor scale-upproblem was analyzed by establishing the frequency oflight–dark cycling of cells and ensuring that thecycle frequency remained unchanged on scale-up. Thehydrodynamics and geometry related factors wereidentified for assuring an unchanged light/dark cycle.The light/dark cycle time in two different tubularphotobioreactors was shown to be identical when thelinear culture velocity in the large scale device(U LL) and that in the small scale unit (〉U LS)were related as follows:ULL = \frac f 9/7 \alpha8/7 ULS.Here f is the scale factor (i.e., the ratio oflarge-to-small tube diameters), α is afunction of the illuminated volumes in the tworeactors, and `dark' refers to any zone of the reactorwhere the light intensity is less than the saturationvalue. The above equation was tested in continuouscultures of P. tricornutum in reactors with 0.03 mand 0.06 m diameter tubes, and over the workableculture velocity range of 0.23 to 0.50 m s-1. Thepredicted maximum realistic photobioreactor tubediameter was about 0.10 m for assuring a cultureperformance identical to that in reactors with smaller tubes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1008110819338
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    Paper (German National Licenses)
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