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  • 1
    Electronic Resource
    Electronic Resource
    Maximum likelihood estimation of growth yields (1982)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 24 (1982), S. 633-649 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: This work is concerned with statistical methods to estimate yield and maintenance parameters associated with microbial growth. For a given dilution rate, an experimenter typically measures substrate concentration, oxygen utilization rate, the rate of carbon dioxide evolution, and biomass concentration. These correlated response variables each contain information about the maintenance and yield parameters of interest. A maximum likelihood estimator which combines this correlated information for the yield and maintenance parameters is proposed, evaluated, and tested on literature data. Both point and interval estimators are considered.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260240309
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  • 2
    Electronic Resource
    Electronic Resource
    Application of data consistency tests and new parameter estimation methods to microbial growth on corn dust in batch culture (1981)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 23 (1981), S. 2333-2360 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The microorganism Candida utilis was grown on both filtered and unfiltered substrate obtained from enzymatic hydrolysis of starch in corn dust. For growth on filtered substrate, the average integrated biomass energetic yield value based on biomass-substrate data was η = 0.55 and for growth on unfiltered substrate an average yield value of η = 0.59 was obtained. Material and energy balances showed that the presence of unfiltered corn residue in the media had no significant effect on the yields. Statistical methods were developed and used to obtain best estimates of the growth parameters. Values of the biomass energetic yield corrected for maintenance (ηmax = 0.619) and the maintenance coefficient (me = 0.043) were obtained for growth on filtered substrate. Values of ηmax = 0.741 and me = 0.142 were obtained for the growth on unfiltered substrate. The consistency of data and parameter estimates was relatively good for filtered substrate; however, parameter estimates for unfiltered substrate were not consistent. Growth experiments without filtration of the products of starch hydrolysis resulted in protein-enriched products with about 39.73% protein.
    Additional Material: 14 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260231015
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  • 3
    Electronic Resource
    Electronic Resource
    Polymers for stabilization of colloidal cobalt particles (1966)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Applied Polymer Science 10 (1966), S. 1915-1927 
    Details
    ISSN: 0021-8995
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: A process for preparing metiallic cobalt particles of uniform size in the 10-1000 A. range is described. Dicobalt octacarbonyl is thermally decomposed in solutions of dispersant polymers to form stable colloids of discrete particles which are separated by polymer coatings. Variatin of polymer composition, molecular weight, and solvent used results in a variation of particle size and colloid stability. Preparation of single-domain ferromagnetic cobalt particles with good magnetic properties depends on a very delicate balance between dispersant polymer, solvent, and the growing metal particle. A number of addition and condensation polymers can act as dispersants. The most successful are linear addition polymers of high molecular weight having relatively nonpolar backbones. Ideally, groups with a polarity greater than the backbone are attached at intervals of at least 100 but not more than 200 backbone atoms. The need for more polar groups and their spacing becomes les critical with increasing polymer molecular weight. The polymers appear to stabilize the metal particles by adsorption to form a thick fiml which separates the particles sufficiently to keep van der Walls energy of attraction below thermal energy levels. The solvent must solubilize the polymer coating sufficiently to allow the particle to grow. It should be less polar than the most polar group in the polymer and be chemically inert.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/app.1966.070101209
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  • 4
    Electronic Resource
    Electronic Resource
    Elektrochemische Adamantylierung von Styrylpyridinen (1983)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 325 (1983), S. 301-308 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Electrochemical Adamantylation of StyrylpyridinesThe reaction between electrochemically generated anion radicals of the 4-(4-styryl)-pyridines 1-6 and 1-bromoadamantane gives, in solvents of low proton availability as N, N—dimethylformamide via an electron transfer in solution and formation of 1-adamantyl-radicals, monoadamantylated pyrid-4-yl-phenylethanes. The major product results from an anion radical/radicalcoupling in the 2(β)- next the 1(α)-position. A competing pathway of the electrohydroadamantylation is the hydrogeneration of the —CH=CH—double bond, whose importance increases with the water content of the solvent. Based on cyclic-voltammetric evidence and product distribution, the mechanism of the reductive coupling of 1-6 in the presence of 1-bromoadamantane in discussed in terms of indirect electrolysis.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19833250217
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  • 5
    Electronic Resource
    Electronic Resource
    Significance of the inner-surface structure of small-caliber prosthetic blood vessels in relation to the development, presence, and fate of a neo-intima. A morphological evaluation (1984)
    Hoboken, NJ : Wiley-Blackwell
    Journal of Biomedical Materials Research 18 (1984), S. 745-755 
    Details
    ISSN: 0021-9304
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine , Technology
    Notes: Microvascular prostheses with three different inner surface structures were examined morphologically 1-18 months after implantation to evaluate the presence and structure of the neo-intima. Fibrous polyurethane tubes (length: 5-10 mm, inner diameter: 1.5 mm) were implanted in the rat abdominal aorta in group A with a fibrillar inner structure (pore sizes 20-50 m̈m), and in group B the inner fibrillar structure was coated with an impermeable continuous silicon sheet. Expanded polytetrafluorethylene vascular prostheses (length: 40 mm, inner diameter: 4 mm) were implanted in the dog carotid artery (group C). The specimens were examined by light microscopy and scanning electron microscopy. A continuous and permanent neointima was only found in the prostheses with the porous fibrillar inner structure (group A). The thin new lining sheet was well attached to the prosthetic wall by cellular protrusions. In the silicon-coated prostheses (group B) also a continuous neo-intima had developed which, however, was irregular, thicker, and not anchored to the prosthetic wall. The expanded polytetrafluorethylene prostheses (group C) showed also after 1 year only incomplete lining with a neo-intima. Fresh blood cell deposits could be observed in the unlined prosthetic wall. It is concluded that a continuous lining of vascular grafts with a thin neo-intima is only achieved if the cells invading the prostheses from the anastomotic areas can anchore their cytoplasmic protrusions onto an appropriately structured inner surface. If these anchoring facilities are not provided, the unattached neo-intima will thicken, interfering with the patency of these microvascular prostheses, or fragments of the neo-intima or alternatively mural thrombi may constantly strip off and embolize.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jbm.820180705
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  • 6
    Electronic Resource
    Electronic Resource
    Die Kristallstruktur von Wolframoxidchlorid WOCl4 und Wolframoxidbromid WOBr4Die vorliegende Arbeit faßt das Ergebnis zweier Untersuchungen zusammen, welche an den am Schluß genannten Instituten unabhängig voneinander durchgeführt wurden. Die dreidimensionale Verfeinerung von WOCl4 wurde vom erstgenannten, die Strukturbestimmung von WOBr4 vom zweitgenannten Autor allein bearbeitet.Professor J. Goubeau zum 65. Geburtstage am 31. März 1966 gewidmet (1966)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 344 (1966), S. 157-166 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: The crystal structures of WOCl4 and WOBr4 were determined by X-ray single crystal methods. The two compounds are isostructural and crystallize in the tetragonal space group I 4. The lattice constants are given above.2 oxygen and 4 chlorine (bromine) atoms form a distorted octahedron around each tungsten atom. The octahedra are linked by oxygen bridges to chains running parallel c.
    Notes: Die Kristallstruktur von WOCl4 und WOBr4 wurde röntgenographisch aus Einkristallaufnahmen bestimmt. Die beiden Verbindungen sind isostrukturell und kristallisieren in der tetragonalen Raumgruppe I 4. Die Gitterkonstanten sind: \documentclass{article}\pagestyle{empty}\begin{document}$$ \begin{array}{*{20}c} {{\rm WOCl}_{\rm 4} :} & {{\rm a } = 8,48,} & {{\rm c = 3,99}{\AA}} \\[6pt] {{\rm WOBr}_{\rm 4} :} & {{\rm a } = 8,96,} & {{\rm c = 3,93}{\AA}} \\ \end{array} $$\end{document} Jedes Wolfram-Atom ist von 2 Sauerstoff- und 4 Chlor- bzw. Brom-Atomen verzerrt oktaedrisch umgeben. Die Oktaeder sind Über Sauerstoff-Brücken zu Ketten verknüpft, welche parallel der c-Achse laufen.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19663440306
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  • 7
    Electronic Resource
    Electronic Resource
    AgCo3H2(AsO4)3 und AgZn3H2(AsO4)3 Darstellung und Kristallstruktur Ein weiterer neuer Arsenat-StrukturtypProfessor Josef Goubeau zum 80. Geburtstage am 31. März 1981 gewidmet (1981)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 474 (1981), S. 123-134 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: AgCo3H2(AsO4)3 and AgZn3H2(AsO4)3. Preparation and Crystal Structure. Another New Structure Type of an ArsenateAgCo3H2(AsO4)3 (1) and AgZn3H2(AsO4)3 (2) were prepared by heating of As2O5, AgNO3, CoSO4 · 7H2O, ZnSO4 · 7H2O, respectively, and water in a sealed tube at 300°C and investigated with X-rays. Both compounds are isotypic and crystallize in the monoclinic space group C2/c with 4 formula units per cell. The lattice parameters are (1): a = 1215.9(6), b = 1243.8(7), c = 678.2(3) pm, β = 113.16(3)° (2): a = 1216.9(2), b = 1249.5(3), c = 675.5(1) pm, β = 112.77(1)°. The structure contains chains of edge-shared CoO6 or ZnO6 octahedra, respectively, which are connected by AsO4 tetrahedra and silver oxygen ribbons with square planar coordinated silver forming a framework. Based on the charge balances derived from the geometrical data and the IR spectra the occurence of hydrogen bonds is discussed.
    Notes: AgCo3H2(AsO4)3 (1) und AgZn3H2(AsO4)3 (2) wurden durch Erhitzen eines Gemisches von As2O5, AgNO3, CoSO4 · 7H2O bzw. ZnSO4 · 7H2O und Wasser auf 300°C im Autoklaven dargestellt und röntgenographisch untersucht. Beide Verbindungen sind isotyp und kristallisieren in der monoklinen Raumgruppe C2/c mit 4 Formeleinheiten in der Elementarzelle. Die Gitterkonstanten sind: (1) a = 1215,9(6), b = 1243,8(7), c = 678,2(3) pm, β = 113,16(3)° (2) a = 1216,9(2), b = 1249,5(3), c = 675,5(1) pm,β = 112,77(1)°. Die Struktur enthält Ketten aus kantenverknüpften CoO6- bzw. ZnO6-Oktaedern, welche über AsO4-Tetraeder, sowie über Silber-Sauerstoff-Bänder mit quadratisch-planar koordiniertem Silber zu einem Gerüst verknüpft sind. Anhand der aus den geometrischen Daten berechneten Ladungsbilanzen und der IR-Spektren wird das Auftreten von Wasserstoffbrücken diskutiert.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19814740313
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  • 8
    Electronic Resource
    Electronic Resource
    Struktur und Reaktionen von Phosphorsäure-tris(N-dichlorphosphino-N-methylamid). Phosphorsäure-tris(N-phenylchlorphosphino-N-methylamid) (1982)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 486 (1982), S. 187-192 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Structure and Reactions of Phosphoric tris(N-dichlorophosphino-N-methylamide). Phosphoric tris(N-phenylchlorophosphino-N-methylamide)The X-ray structural analysis of phosphoric tris(N-dichlorophosphino-N-methylamide), I, is reported. Synthesis, properties and nmr data of phosphoric tris(N-phenylchlorophosphino-N-methylamide), III, are described.
    Notes: Es wird die Röntgenstrukturanalyse von Phosphorsäure-tris(N-dichlorphosphino-N-methylamid), I, mitgeteilt. Die Synthese, Eigenschaften und NMR-Daten von Phosphorsäure-tris(N-phenylchlorphosphino-N-methylamid), III, sind beschrieben.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19824860121
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  • 9
    Electronic Resource
    Electronic Resource
    N-Phenylquecksilber-N,N-bis(phosphorsäurediphenylester)-imidProfessor Rudolf Hoppe zum 60. Geburtstage gewidmet (1982)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 491 (1982), S. 266-270 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: N-Phenylmercury-N,N-bis(phosphoric diphenylester)imideSynthesis, properties, and structure of the title compound are described.
    Notes: Darstellung, Eigenschaften und Struktur der Titelverbindung werden beschrieben.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19824910134
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  • 10
    Electronic Resource
    Electronic Resource
    Imidodiphosphorsäuretetraphenylester, Salze und Komplexe (1983)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 496 (1983), S. 109-116 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Tetraphenyl Imidodiphosphate, Salts, and ComplexesAn improved preparation of pure tetraphenyl imidodiphosphate and the preparation of the sodium, diethylammonium, barium and calcium salts of tetraphenyl imidodiphosphate are described. The syntheses of bis(tetraphenylimidodiphosphato)copper(II) and tris(tetraphenylimidodiphosphato)iron(III) are reported. The new compounds are characterized by their properties and nmr spectra. An X-ray crystal structure analysis is reported for the copper complex.
    Notes: Die verbesserte Reindarstellung des Imidodiphosphorsäuretetraphenylesters, die Darstellung seines Natrium-, Diethylammonium-, Barium- und Calciumsalzes sowie die von Bis(tetraphenyl-imidodiphosphato)-kupfer(II) und Tris(tetraphenyl-imidodiphosphato)-eisen(III) werden beschrieben. Die neuen Verbindungen sind durch ihre Eigenschaften und NMR-Spektren charakterisiert. Das Ergebnis der Röntgenstrukturanalyse von Bis(tetraphenyl-imidodiphosphato)-kupfer(II) wird mitgeteilt.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19834960112
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