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  • Articles: DFG German National Licenses  (4)
  • Excess molar volume  (2)
  • Life Sciences  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Excess molar volumes of 1-nonanol withn-heptane at 25, 35 and 45°C1 (1992)
    Springer
    Journal of solution chemistry 21 (1992), S. 425-431 
    Details
    ISSN: 1572-8927
    Keywords: Excess molar volume ; 1-nonanol ; n-heptane
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The excess molar volumes V m E at atmospheric pressure and at 25, 35 and 45°C for binary mixtures of 1-nonanol, with n-heptane have been obtained over the whole mole fraction range from densities measured with a vibrating-tube densimeter. The measurements at 25°C were extended to high dilution of 1-nonanol. The V m E are sigmoid for the three temperatures, with a small maximum at low mole fractions of the alkanol. The absolute values of V m E increase with temperature from 25 to 45°C.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00649696
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Excess molar volumes of diethyl carbonate with hydrocarbons or tetrachloromethane at 25°C (1995)
    Springer
    Journal of solution chemistry 24 (1995), S. 827-835 
    Details
    ISSN: 1572-8927
    Keywords: Excess molar volume ; diethyl carbonate ; n-heptane ; n-decane ; n-tetradecane ; 2,2,4-trimethylpentane ; cyclohexane ; benzene ; toluene ; tetrachloromethane
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The excess molar volumes V m E at atmospheric pressure and at 25°C for binary mixtures of diethyl carbonate with n-heptane, n-decane, n-tetradecane, 2,2,4-trimethylpentane, cyclohexane, benzene, toluene, or tetrachloromethane have been obtained over the whole mole-fraction range from densities measured with a vibrating-tube densimeter. The V m E are positive for all the systems investigated, except for the mixture with toluene which is negative. The results for V m E together with data previously published on excess molar enthalpies H m E and excess molar Gibbs energies G m E , suggest interactions between carbonate and hydrocarbons which are stronger with aromatic than with aliphatic hydrocarbons.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01131047
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Production of propionic acid by microbiological way. Part 1. Influence of the initial sugars and product concentrations (1992)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 12 (1992), S. 269-276 
    Details
    ISSN: 0138-4988
    Keywords: Life Sciences ; Life Sciences (general)
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: The best yields and productivities of 0.38 g · g-1 and 0.35 g · l-1 h-1, respectively, for the propionic acid production in a batchsystem using sugar-cane final molasses as carbon source were obtained when an initial TRS concentration of 50 g · l-1 was used.It was obvious that this process is severely inhibited by the acids produced and the most drastic effect (μ = 0) was at a TVA concentration near to 250 mmol · l-1, independently of the initial TRS concentration employed.A generalizated equation of noncompetitive inhibition was adjusted: \documentclass{article}\pagestyle{empty}\begin{document}$$\mu = \frac{{\mu _{\max } }}{{1 + \left( {\frac{{TVA}}{{K_{\rm P} }}} \right)^n }}$$\end{document} and kinetic inhibition constants for each initial TRS concentration studied were estimated.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/abio.370120403
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    The influence of MAILLARD's reaction in sugar cane molasses on the kinetic fermentation parameters of Candida utilis NRRL Y-660 (1994)
    Berlin : Wiley-Blackwell
    Acta Biotechnologica 14 (1994), S. 53-59 
    Details
    ISSN: 0138-4988
    Keywords: Life Sciences ; Life Sciences (general)
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: Growth inhibition of Candida utilis NRRL Y-660 took place in molasses stored at 60°C for 120 days. The specific growth rate (μmax) was reduced from 0.42 h-1 to 0.200 h-1 as a result of a lack of affinity from the microorganism to the substrate and the increasing maintenance necessities. The Ks values arose from 1.40 mg/ml to 4.28 mg/ml within the whole experiment. At the same time, the maintenance coefficient (m) increased from 0.250 to 3.80 mg/ml. In a continuous culture the “wash-out” conditions were reached at dilution rate values (D) close to 0.40 h-1. The process productivity decreased up to 15% from its original value in fresh molasses.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/abio.370140109
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    Paper (German National Licenses)
    Fulltext
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