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  • 1
    Digitale Medien
    Digitale Medien
    Realization of dependency structures (1977)
    Springer
    Bulletin of mathematical biology 39 (1977), S. 499-503 
    Details
    ISSN: 1522-9602
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Mathematik
    Notizen: Abstract In this paper we show how to construct block diagram realizations of a given dependency structure and investigate some elementary properties.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02462928
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  • 2
    Digitale Medien
    Digitale Medien
    Preparation and properties of a new type of comb-shaped, amphiphilic cellulose derivative (1997)
    Springer
    Cellulose 4 (1997), S. 89-98 
    Details
    ISSN: 1572-882X
    Schlagwort(e): O-(2-hydroxy-3-butoxyp ropyl) cellulose ; comb-shaped polymer ; amphiphilic cellulose derivative ; sol-geltransition ; micellization
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft , Werkstoffwissenschaften, Fertigungsverfahren, Fertigung
    Notizen: Abstract Comb-shaped, amphiphilic O-(2- hydroxy-3-butoxypropyl) cellulose (HBPC) was prepared by a homogeneous reaction of cellulose with butyl glycidyl ether (BGE) in a 10% (w/w) LiCl--DMAc solution. It was found that: (a) the molar substitution (MS) of water-soluble HBPC ranges from 0.4 to 1.0, and is nearly equal to its degree of substitution (DS), indicating that the HBPC derivatives obtained are comb-shaped polymers; (b) the water-soluble HBPC shows a thermally reversible sol-gel transition in aqueous solution; and (c) the derivative having a DS of 0.6 shows surface activity with critical micelle concentration (cmc) in the order of 0.8 g/l and surface tension of 31.5 dyn/cm
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1023/A:1018467202853
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  • 3
    Digitale Medien
    Digitale Medien
    Numerische Simulation durch Wirbel zu bestimmender Strömungsfelder im Schaufelgitter (1988)
    Springer
    Zeitschrift für angewandte Mathematik und Physik 39 (1988), S. 50-64 
    Details
    ISSN: 1420-9039
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Mathematik , Physik
    Beschreibung / Inhaltsverzeichnis: Zusammenfassung Wir benutzen die Weierstraßschen elliptischen Funktionen und die hyperbolischen Funktionen, um die von Wirbeln hervorgerufenen Strömungsfelder zu berechnen. Die Berechnungsgebiete sind: 1. Ein Parallogramm, beschränkt durch vier Wände 2. Ein Kanal, begrenzt durch obere und untere Wände 3. Ein halboffenes Gebiet, beschränkt durch obere, untere und linksseitige Wände. Die Methode der Wirbelanordnung und die erhaltenen Ergebnisse werden auch angegeben. Die Ergebnisse haben gezeigt, daß die geometrischen Orte und Geschwindigkeitsvektoren vernünftig beschrieben werden können. Es ist schließlich bewiesen worden, daß diese Berechnungsverfahren von großer Hilfe sind, um die sekundären Strömungen im dreidimensionalen Raum zu erklären.
    Notizen: Abstract Wir benutzen die Weierstraßschen elliptischen Funktionen und die hyperbolischen Funktionen, um die von Wirbeln hervorgerufenen Strömungsfelder zu berechnen. Die Berechnungsgebiete sind: 1. a parallelogramm bounded by four boundaries 2. a channel restricted by upper and lower boundaries 3. a half region confined by upper, lower and left boundaries. The method of vortex distribution in a calculation plane and the calculated results are also shown. The loci of the vortices and velocity vectors show a reasonable behavior. It is concluded that this method is effective in analysing the secondary flows with vortices in a cascade.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00945721
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  • 4
    Digitale Medien
    Digitale Medien
    Inability of thiamine phosphates transport in isolated rat hepatocyte (1983)
    Springer
    Cellular and molecular life sciences 39 (1983), S. 505-507 
    Details
    ISSN: 1420-9071
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Notizen: Summary The hapatic transport of thiamine phosphates was studied in isolated rat hepatocytes. No significant radioactivity of14C-thiamine monophosphate and14C-thiamine pyrophosphate was incorporated into liver cells freshly isolated using the collagenase-perfusion technique. The result indicates that neither thiamine phosphates nor their thiamine moiety are available for liver cells.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01965177
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  • 5
    Digitale Medien
    Digitale Medien
    Choline accumulation in isolated rat hepatocytes (1988)
    Springer
    Cellular and molecular life sciences 44 (1988), S. 889-892 
    Details
    ISSN: 1420-9071
    Schlagwort(e): Choline ; choline accumulation ; Na+-and energy-dependent process ; choline analogs ; quaternary ammonium compounds ; rat hepatocytes
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Notizen: Summary The accumulation of non-metabolized choline in isolated rat hepatocytes is concentrative in Na+ medium, whereas the accumulation does not exceed unity in a Li+ medium. Ouabain and 2,4-dinitrophenol inhibited the choline uptake. These results indicate that choline is taken up by rat hepatocytes via a Na+-and energy-dependent process, and choline oxidase is not directly connected with the choline transport system.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01941191
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  • 6
    Digitale Medien
    Digitale Medien
    Reversal of pyrithiamine-induced growth inhibition ofSaccharomyces cerevisiae by oxythiamine (1984)
    Springer
    Cellular and molecular life sciences 40 (1984), S. 582-583 
    Details
    ISSN: 1420-9071
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Notizen: Summary Oxythiamine reversed the growth inhibition ofSaccharomyces cerevisiae caused by pyrithiamine, although oxythiamine alone inhibited yeast cell growth. This phenomenon was explained by thiamine production from these 2 thiamine antagonists which was demonstrated using cell suspensions and the crude extract ofS. cerevisiae.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01982343
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  • 7
    Digitale Medien
    Digitale Medien
    Thiamine-binding activity ofSaccharomyces cerevisiae plasma membrane (1986)
    Springer
    Cellular and molecular life sciences 42 (1986), S. 607-608 
    Details
    ISSN: 1420-9071
    Schlagwort(e): Thiamine ; thiamine-binding ; yeast plasma membrane
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Notizen: Summary The specific binding activity to [14C]thiamine was found to be located in the plasma membrane ofSaccharomyces cerevisiae. The activity was inhibited by several thiamine analogs and it was hardly detectable in the plasma membrane from a thiamine transport mutant ofSaccharomyces cerevisiae. Some properties of the thiamine-binding activity of yeast plasma membrane are discussed in connection with those of the thiamine transport system.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01955555
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  • 8
    Digitale Medien
    Digitale Medien
    A potent attractant of zoospores ofAphanomyces cochlioides isolated from its host,Spinacia oleracea (1992)
    Springer
    Cellular and molecular life sciences 48 (1992), S. 410-414 
    Details
    ISSN: 1420-9071
    Schlagwort(e): Aphanomyces cochlioides ; Spinacia oleracea ; zoospore ; attractant ; cochliophilin A
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Notizen: Abstract A highly potent attractant of zoospores ofAphanomyces cochlioides, a causal fungus of the root rot disease of spinach (Spinacia oleracea), was isolated from spinach roots, and its structure was determined by spectroscopic evidence and chemical synthesis as cochliophilin A (5-hydroxy-6,7-methylenedioxyflavone,1). A chromosorb particle prepared by soaking in solution of1 showed a potent attracting activity toward the zoospores using concentrations of1 above 10−9 or 10−10 M.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01923445
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  • 9
    Digitale Medien
    Digitale Medien
    Observation of gain at 54.2 Å on balmer-alpha transition of hydrogenic sodium (1990)
    Springer
    Applied physics 50 (1990), S. 247-256 
    Details
    ISSN: 1432-0649
    Schlagwort(e): 32.30.Rj ; 42.55.Hq ; 52.70.La
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Physik
    Notizen: Abstract Planer stripe and foil targets coated with NaF were irradiated with high intensity 351 nm laser radiation of 130 ps duration. Time-integrated as well as time-resolved measurement of gain on NaXIHα at 54.2Å were made. A time-integrated gain of 1.2 −1.1 +0.8 cm−1 and a time-resolved peak gain of 3.2±1.0 cm−1 were obtained. A detailed account of the experimental procedures for determination of gain is given.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00325056
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  • 10
    Digitale Medien
    Digitale Medien
    Quantification of thigmotropism (contact sensing) of Candida albicans and Candida tropicalis (1997)
    Springer
    Mycopathologia 138 (1997), S. 13-19 
    Details
    ISSN: 1573-0832
    Schlagwort(e): Candida albicans ; Candida tropicalis ; germ tube ; hypha ; thigmotropism
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Notizen: Abstract To quantify the thigmotropism, we adapted the our previous method using a chemotaxifilter system in combination with a bioluminescent adenosine triphosphate (ATP) assay based on firefly luciferase-luciferin system and analyzed the relationship between the ability of germ tube formation and thigmotropism of C. albicans and C. tropicalis. Both the ability to form germ tube and the amount of hyphae exhibiting thigmotropism varied depending upon both the species and strains of Candida. C. albicans formed more germ tubes than C. tropicalis. A good correlation was observed between the ability to form a germ tube and the capacity for thigmotropism, and the results gave a level of significance (p〈0.05). Further, SEM observation revealed that relatively long hyphae of C. tropicalis with penetrated through the pores of filter membrane. This phenomenon may be of importance in the development of pathogenesis of C. tropicalis as well as C. albicans.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1023/A:1006849532064
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