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  • 1
    Electronic Resource
    Electronic Resource
    Off-flavour reduction in Vicia faba bean protein isolate
    Amsterdam : Elsevier
    Food Chemistry 30 (1988), S. 129-135 
    Details
    ISSN: 0308-8146
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0308-8146(88)90150-1
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  • 2
    Electronic Resource
    Electronic Resource
    Vorträge der außerordentlichen Versammlung der Geologischen Vereinigung in Königsberg i. Pr. am 12. und 13. September 1930 (1931)
    Springer
    International journal of earth sciences 22 (1931), S. 51-57 
    Details
    ISSN: 1437-3262
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01810335
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  • 3
    Electronic Resource
    Electronic Resource
    Experimental and theoretical investigations of submerged fermentation and synthesis of pectinolytic enzymes by Aspergillus niger (1995)
    Springer
    Applied microbiology and biotechnology 43 (1995), S. 424-430 
    Details
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract  The growth of the microorganism and the production of the pectinolytic enzyme complex in a stirred 30-l biofermentor using the Aspergillus niger Rehbrücke strain were studied. The time courses of fermentation parameters (formation of biomass, consumption of carbon and inorganic nitrogen source, formation of pectinolytic enzymes) were measured. The formation of biomass showed a distinct lag phase, followed by a log phase with exponential growth and finally a stationary period when cell lysis was beginning. The uptake of the carbon source and inorganic nitrogen source by the A. niger cells corresponded to the time course of growth. The formation of pectinolytic enzymes took place in two steps. The first one was growth-bounded and finished with the end of the log phase of biomass growth. The second step of pectinolytic enzyme formation took place after the end of the catabolite repression of the carbon source and was not growth-bounded. On the basis of the experimental data a mathematical model of the fermentation process was developed. Comparison of the kinetics of the measured fermentation curves and the solution curves of the model showed qualitatively good agreement.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002530050429
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  • 4
    Electronic Resource
    Electronic Resource
    Experimental and theoretical investigations of submerged fermentation and synthesis of pectinolytic enzymes by Aspergillus niger (1995)
    Springer
    Applied microbiology and biotechnology 43 (1995), S. 424-430 
    Details
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract The growth of the microorganism and the production of the pectinolytic enzyme complex in a stirred 30-l biofermentor using the Aspergillus niger Rehbrücke strain were studied. The time courses of fermentation parameters (formation of biomass, consumption of carbon and inorganic nitrogen source, formation of pectinolytic enzymes) were measured. The formation of biomass showed a distinct lag phase, followed by a log phase with exponential growth and finally a stationary period when cell lysis was beginning. The uptake of the carbon source and inorganic nitrogen source by the A. niger cells corresponded to the time course of growth. The formation of pectinolytic enzymes took place in two steps. The first one was growth-bounded and finished with the end of the log phase of biomass growth. The second step of pectinolytic enzyme formation took place after the end of the catabolite repression of the carbon source and was not growth-bounded. On the basis of the experimental data a mathematical model of the fermentation process was developed. Comparison of the kinetics of the measured fermentation curves and the solution curves of the model showed qualitatively good agreement.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00218444
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  • 5
    Electronic Resource
    Electronic Resource
    Relationship between a long-term treatment of 2-mercaptoethanol and protein metabolism in the ageing rat (1992)
    Springer
    Journal of comparative physiology 162 (1992), S. 547-551 
    Details
    ISSN: 1432-136X
    Keywords: Protein metabolism ; Ageing rat ; 2-Mercaptoethanol ; Stable isotope ; 15N-Glycine
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Female RLEF1/Lati rats were chronically treated with 2-mercaptoethanol in a dose of 13 μg·100 g bw-1·day-1 dissolved in drinking water. During a 48-h experiment 15N-labelled glycine was given orally in a dose of 5 mg 15N·kg bw-1 and urine samples were collected and analysed by an emission spectrometric isotope method. Protein synthesis and nitrogen excretion rate constants were calculated according to the three-pool model, and 3-methylhistidine excretion rates were also determined. 2-Mercaptoethanol appears to influence protein metabolism; however, the slower rates of protein synthesis proved to be apparent in almost all groups of treated rats. Protein synthesis and nitrogen excretion rate constants have exceptionally high values in 2-year-old rats, possibly explained by the occurrence of hypercompensation mechanisms in old age. These were reflected by the excretion rates of 3-methylhistidine which were reduced as a result of sulphhydryl group interactions in age-dependent cellular metabolic changes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00264816
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  • 6
    Electronic Resource
    Electronic Resource
    Bifurcation scenarios of the noisy duffing-van der pol oscillator (1996)
    Springer
    Nonlinear dynamics 11 (1996), S. 255-274 
    Details
    ISSN: 1573-269X
    Keywords: Stochastic bifurcation ; invariant measures ; Lyapunov exponents ; stochastic numerics ; random dynamical systems ; Duffing-van der Pol oscillator
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract This paper presents a numerical study of the bifurcation behavior of the noisy Duffing-van der Pol oscillator % MathType!MTEF!2!1!+-% feaafeart1ev1aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn% hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr% 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4baFfea0dXde9vqpa0lb9% cq0dXdb9IqFHe9FjuP0-iq0dXdbba9pe0lb9hs0dXda91qaq-xfr-x% fj-hmeGabaqaciGacaGaaeqabaWaaeaaeaaakeaatCvAUfKttLeary% qr1ngBPrgaiuGacuWF4baEgaWaaiaaiccacqWF9aqpcaaIGaGaaiik% aerbtLhBMfwzUbacgiGaa4xSdiaaiccacqGHRaWkcaaIGaGaeq4Wdm% 3ccaaIXaGcceqGxbGbaiaaliaaigdakiGacMcacqWF4baEcaaIGaGa% ci4kaiaaiccacqaHYoGycuWF4baEgaGaaiaaiccacqGHsislcaaIGa% Gae8hEaG3aaWbaaSqabeaacaaIZaaaaOGaaGiiaiabgkHiTiaaicca% cqWF4baEdaahaaWcbeqaaiaaikdaaaGccuWF4baEgaGaaiaaiccaci% GGRaGaaGiiaiabeo8aZTGaaGOmaOGabe4vayaacaGaaeOmaiaabYca% aaa!5F62!\[\ddot x = (\alpha + \sigma 1{\rm{\dot W}}1)x + \beta \dot x - x^3 - x^2 \dot x + \sigma 2{\rm{\dot W2,}}\] where α, β are bifurcation parameters, % MathType!MTEF!2!1!+-% feaafeart1ev1aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn% hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr% 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4baFfea0dXde9vqpa0lb9% cq0dXdb9IqFHe9FjuP0-iq0dXdbba9pe0lb9hs0dXda91qaq-xfr-x% fj-hmeGabaqaciGacaGaaeqabaWaaeaaeaaakeaaceqGxbGbaiaali% aaigdakiqabEfagaGaaSGaciOmaaaa!35B4!\[{\rm{\dot W}}1{\rm{\dot W}}2\] are independent white noise processes, and σ1, σ2 are intensity parameters. A stochastic bifurcation here means (a) the qualitative change of stationary measures or (b) the change of stability of invariant measures and the occurrence of new invariant measures for the random dynamical system generated by (1). The first type of bifurcation can be observed when studying the solution of the Fokker-Planck equation, this stationary measure is a quantity corresponding to the one-point motion. More generally, if one is interested in the simultaneous motion of n points (n≥1) forward and backward in time, then the second type of bifurcation arises naturally, capturing all the stochastic dynamics of (1). Based on the numerical results, we propose definitions of the stochastic pitchfork and Hopf bifurcations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00120720
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  • 7
    Electronic Resource
    Electronic Resource
    Druckverlust und Stoffaustausch in VentilbödenHerrn Prof. Dipl.-Ing. C. J. Heckmann zum 65. Geburtstag (1967)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 39 (1967), S. 659-666 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Aus Versuchsergebnissen an Kolonnen von 600 und 800 mm Dmr. mit Ventilböden, die mit dem System Luft/NH3/Wasser betrieben wurden, lassen sich für die Berechnung des Druckverlustes drei Gleichungen aufstellen, die in einem bestimmten Bereich der Ventilstellung gelten. Die Zahl der Austauscheinheiten wird dagegen mit einer einzigen Gleichung berechnet, in welche die Flüssigkeits- und Gasmengen sowie konstruktive Größen eingehen. Ventile mit 50 mm Dmr. erwiesen sich als besonders günstig. Das Verhältnis von gesamter Öffnungsfläche eines Bodens zur Bodenfläche soll zwischen 0,14 und 0,16 liegen. Die Wehrhöhe sollte nicht wesentlich höher als 50 mm gewählt werden. Weitere Versuche sind notwendig, um den Einfluß veränderlicher Stoffeigenschaften zu ermitteln.
    Additional Material: 13 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330391105
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  • 8
    Electronic Resource
    Electronic Resource
    Verfahrenstechnische Grundlagen der Typisierung von Kolonnenböden (1967)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 39 (1967), S. 801-805 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Am Beispiel von standardisierten Glockenböden werden Prinzipien der Typisierung von Kolonnenböden aufgezeigt. Der Vorrang verfahrenstechnischer Überlegungen bei der Aufteilung der Strömungsquerschnitte von geometrischen und konstruktiven Gesichtspunkten führt zu einem besonders großen Arbeitsbereich der typisierten Böden. Die graphische Darstellung der Flüssigkeits- und Dampfbelastungen typisierter Böden gestattet eine schnelle Auswahl der wichtigsten Abmessungen von Austauschböden.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330391306
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  • 9
    Electronic Resource
    Electronic Resource
    Neue Fluoride mit zweiwertigem Silber: MIAgIIMIIIF6 mit MI = K, Rb, Cs und M = Al, Ga, In, Tl, Sc, Fe, CoProfessor Harald Schäfer zum 60. Geburtstage gewidmet (1973)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 395 (1973), S. 239-248 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: New Fluorides with Divalent Silver MIAgIIMIIIF6 with MI = K, Rb, Cs and M = Al, Ga, In, Tl, Se, Fe, CoNew obtained are compounds MIAgIIMIIIF6 with MI = K, Rb, Cs and MIII = Tl, In, Ga, Al, Sc, Fe, Co which show remarkable colours. CsAgTlF6 (a = 10.89 Å) CsAgInF6, (a = 10.84 Å) and CsAgScF6, (a = 10.79 Å) are cubic examples of the RbNiCrF6-type of structure. The magnetic behaviour is complicated. The MADELUNG Part of Lattice Energy (MAPLE) is calculated and discussed.
    Notes: Neu dargestellt wurden Verbindungen MIAgIIMIIIF6 mit MI= K, Rb, Cs und MIII = Tl, In, Ga, Al, Sc, Fe und Co, die auffallende Farben aufweisen. CsAgTIF6, (a = 10,89 Å), CsAgInF6, (a = 10,84 Å) und CsAgScF6 (a = 10.79 Å) kristallisieren kubisch im RbNiCrF6-Typ. Das magnetische Verhalten ist kompliziert. Der MADELUNG-Anteil der Gitterenergie (MAPLE) wird berechnet und diskutiert.
    Additional Material: 14 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19733950212
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  • 10
    Electronic Resource
    Electronic Resource
    Darstellung, Strukturen und Eigenschaften von Tris-hexamethyl-trisila-tetraphospha-nortricyclen-bis-chromtricarbonyl [P4(Sime2)3]3[Cr(CO)3]2Professor Rudolf Hoppe zum 60. Geburtstage gewidmet (1982)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 491 (1982), S. 83-94 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Preparation, Structures, and Properties of Tris-hexamethyl-trisila-tetraphospha-nortricyclene-bis-chromiumtricarbonyl [P4(Sime2)3]3[Cr(CO)3]2Hexamethyl-trisila-tetraphospha-nortricyclene P4(Sime2)3 1 reacts with C6H6Cr(CO)3 or (CHT)Cr(CO)3 (CHT = Cycloheptatriene) under formation of [P4(Sime2)3]3[Cr(CO)3]2 3 (red crystals), in which each of the Cr atoms is attached to one P atom of a P3 ring of the three molecules 1. 3 can also be prepared by heating a solution of P4(Sime2)3Cr(CO)5 in benzene or THF up to 120-1307deg;C. The compound 3 crystallizes in an orthorhombic and a hexagonal form, the latter being stabilized by one mole toluene. As revealed by single crystal investigations, the symmetry ¯6, distances and angles are nearly unchanged. The o-form corresponds to a face centered cubic packing of the molecules, whereas the h-form is hexagonal close packed.
    Notes: Hexamethyl-trisila-tetraphospha-nortricyclen P4(Sime2)3 1 reagiert mit C6H6Cr(CO)3 bzw. (CHT)Cr(CO)3 (CHT = Cycloheptatrien) unter Bildung von [P4(Sime2)3]3[Cr(CO)3]2 3 (rote Kristalle), in dem jedes der Cr-Atome mit einem P-Atom eines P-Dreiringes der drei Moleküle von 1 verbunden ist. 3 bildet sich auch beim Erwärmen einer Lösung von P4(Sime2)3Cr(CO)5 in Benzol oder THF auf 120°-130°C.Die Verbindung 3 kristallisiert in einer orthorhombischen und einer durch ein Mol Toluol stabilisierten hexagonalen Form. Nach Einkristalluntersuchungen sind die Symmetrie ¯6, Abstände und Winkel in beiden Formen nahezu unverändert. Die o-Form entspricht einer kubisch dichten, die h-Form einer hexagonal dichten Molekülpackung.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19824910112
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