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  • 1
    Electronic Resource
    Electronic Resource
    Letters to the editor (1982)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 28 (1982), S. 871-872 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690280544
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  • 2
    Electronic Resource
    Electronic Resource
    Principles of heat transfer, 3rd edit., Frank Kreith, Intext Educational Publishers, New York (1973). 656 pages. $15.0 (1974)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 20 (1974), S. 415-415 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690200244
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  • 3
    Electronic Resource
    Electronic Resource
    Effects of association on enthalpy of coal-derived liquids: Cryoscopic molecular weight as a function of concentration (1983)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 29 (1983), S. 508-511 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690290323
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  • 4
    Electronic Resource
    Electronic Resource
    Purification of a pyrogen-free human growth hormone antagonist (1995)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 48 (1995), S. 520-528 
    Details
    ISSN: 0006-3592
    Keywords: human growth hormone ; animal cell culture ; purification ; serum ; Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Human growth hormone (hGH) is a polypeptide with 191 amino acids and a molecular mass of 22 kilodaltons. With the aid of computer molecular simulation, an hGH analog was created by altering an hGH gene to reflect the change of one amino acid (glycine [G] 120 to arginine [R]) within the third α-helix of the hGH molecule. This hGH analog, named hGHG120R, was found to be an hGH antagonist. It may have important implications in treating human conditions in which hGH levels are abnormally high, as found in type I diabetics. Several hundred milligrams of purified hGHG120R were needed to determine the biological activity of the antagonist in animal models. A multistep downstream process was developed to purify hGHG120R from cultured mouse L cells transfected with the hGHG120R gene. The process consisted of cell clarification, salt precipitation, membrane ultrafiltration, reversed phase high performance liquid chromatography, phase separation, and lyophiliation. This work discusses the rationale for the design of the process and experimental results on the purification of hGHG120R using the process. © 1995 John Wiley & Sons, Inc.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260480515
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  • 5
    Electronic Resource
    Electronic Resource
    Toluene degradation kinetics for planktonic and biofilm-grown cells of Pseudomonas putida 54G (1997)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 53 (1997), S. 535-546 
    Details
    ISSN: 0006-3592
    Keywords: toluene ; biofilm kinetics ; planktonic cell kinetics ; specific activity ; injury ; Pseudomonas putida 54G ; vapor phase bioreactor ; Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Toluene degradation kinetics by biofilm and planktonic cells of Pseudomonas putida 54G were compared in this study. Batch degradation of 14C toluene was used to evaluate kinetic parameters for planktonic cells. The kinetic parameters determined for toluene degradation were: specific growth rate, μmax = 10.08 ± 1.2/day; half-saturation constant, KS = 3.98 ± 1.28 mg/L; substrate inhibition constant, KI = 42.78 ± 3.87 mg/L. Biofilm cells, grown on ceramic rings in vapor phase bioreactors, were removed and suspended in batch cultures to calculate 14C toluene degradation rates. Specific activities measured for planktonic and biofilm cells were similar based on toluene degrading cells and total biomass. Long-term toluene exposure reduced specific activities that were based on total biomass for both biofilm and planktonic cells. These results suggest that long-term toluene exposure caused a large portion of the biomass to become inactive, even though the biofilm was not substrate limited. Conversely, specific activities based on numbers of toluene-culturable cells were comparable for both biofilm and planktonically grown cultures. Planktonic cell kinetics are often used in bioreactor models to model substrate degradation and growth of bacteria in biofilms, a procedure we found to be appropriate for this organism. For superior bioreactor design, however, changes in cellular activity that occur during biofilm development should be investigated under conditions relevant to reactor operation before predictive models for bioreactor systems are developed. © 1997 John Wiley & Sons, Inc. Biotechnol Bioeng 53: 535-546, 1997.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    A study of reduction phenomena in a high performance liquid chromatography/particle beam/mass spectrometer system (1995)
    New York, NY : Wiley-Blackwell
    Rapid Communications in Mass Spectrometry 9 (1995), S. 150-155 
    Details
    ISSN: 0951-4198
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: In this paper we report our studies of reduction phenomena in a high performance liquid chromatography/particle beam interface-mass spectrometer system (HPLC/PB-MS). It is shown that reduction takes place in the ion source of the mass spectrometer, but that the particle beam interface plays an important role in the reduction process since the HPLC mobile phase is involved in the reduction. HPLC flow rate and desolvation-chamber temperature have significant effects on the reduction extent, while ion-source temperature has only a minor effect. All the nitro compounds and sulfoxides tested in this work showed reduction in the system. There was no observed reduction for sulfones. 1,4-Naphthaquinone showed significant reduction, while no reduction was observed for anthraqunone.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/rcm.1290090209
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  • 7
    Electronic Resource
    Electronic Resource
    Fast-atom bombardment mass spectrometric determination of methyl[1-(butylcarbamoyl)-1H-benzimidazol-2-yl]carbamate (benomyl) in wettable powder formulations (1993)
    New York, NY : Wiley-Blackwell
    Rapid Communications in Mass Spectrometry 7 (1993), S. 167-171 
    Details
    ISSN: 0951-4198
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: In this Communication we report, for the first time, a direct method for the determination of benomyl (methyl [1-(butylcarbamoyl)-1H-benzimidazol-2-yl]carbamate) in wettable powder formulations by fast-atom bombard-ment mass spectrometry (FAB-MS). Solutions of desired concentrations of benomyl were prepared in 5 M hydrochloric acid. The matrix compound, glycerol, was added at 10% (v/v) to these solutions for obtaining FAB mass spectra. The results of the analysis of wettable powder samples, carried out by FAB-MS, compared well (p 〉 0.05) with those obtained by reversed-phase high performance liquid chromatography.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/rcm.1290070211
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  • 8
    Electronic Resource
    Electronic Resource
    Studies on chemical resistance of polyesters (1988)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 156 (1988), S. 21-27 
    Details
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Es wurden Polyester basierend auf 1,4,5,6,7,7-Hexachlor-5-norbornen-2,3-dicarbonällureanhydrid (I), Tetrachlorphthalsäureanhydrid (II), Dibromneopentylglykol (II), ein Polyesterblend (V) bestehend aus dem Polyester (III) und einem Polyester (IV) für allgemeine Zwecke, ein Polyester (VI) basierend auf 1,4,5,6,7,7-Hexachlor-5-norbornen-2,3-dicarbonsäureanhydrid und dem Polyester III und ein Polyesterblend (VII) bestehend aus den Polyestern I und III hergestellt. Ihre chemische Resistenz und ihre Feuchtigkeitsaufnahme bei Temperaturen von 25 und 65°C wurden in Säuren, 20% NaOH und Wasser untersucht. Hierbei wurde gefunden, daß der Polyester (III) von den Säuren am wenigsten angegriffen wird. Verglichen mit unbehandelten Poly meren fand bei beiden Temperaturen in 20% NaOH eine Gewichtsabnahme bei allen Polyestern statt, mit Ausnahme des Polyesters VII. Erne Gewichtszunahme aller Polyester wurde beobachtet durch Feuchtigkeitsaufnahme sowohl bei 25 als auch bei 65°C, wobei die Zunahme bei der höheren Temperatur größer war. Der Polyester III zeigte die geringste Feuchtigkeitsaufnahme.
    Notes: Chlorendic anhydride based polyester (I,) tetrachlorophthalic anhydride based polyester (II), dibromoneopentyl glycol based polyester (III,) general purpose polyester (IV,) blend of dibromoneopentyl glycol based polyester with general purpose polyester (V,) chlorendic anhydride and dibromoneopentyl glycol based polyester (VI), and a blend of chlorendic anhydride based polyester and dibromoneopentyl glycol based polyester (VII) were prepared and their chemical resistance and moisture absorption studied in various reagents, acid, alkali, and water, at 25 and 65°C. It is found that the polyester (III) is the least affected in the presence of the acids. In 20% NaOH, there was a decrease in weight for all polyesters at both the temperatures compared to the control except the polyester (VII). Increase in weight of all the polyesters was observed during the absorption of moisture both at 25 and 65°C. The increase was higher at higher temperature. Polyester (III) thus shows the least absorption of moisture.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1988.051560102
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  • 9
    Electronic Resource
    Electronic Resource
    Influence of grafting on the thermodynamic parameters and stability constants of some intermacromolecular complexes of poly(methacrylic acid) and a graft copolymer (1987)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 154 (1987), S. 121-130 
    Details
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Für die intermolekularen Komplexe aus Poly(methacrylsäure) und Poly(vinylalkohol-g-acrylamid) wurden die Stabilitätskonstanten und thermodynamischen Parameter (ΔH° und ΔS°) bestimmt. Diese Werte wurden mit denen verglichen, die man vorher für die intermolekularen Komplexe der entsprechenden Homopolymeren, Poly(acrylamid) und Poly(vinylalcohol), bestimmt hatte. Der Einfluß des Pfropfens auf diese Parameter wurde erklärt mit den günstigeren kooperativen Bindungen mit dem Pfropfcopolymeren.
    Notes: Stability constants and thermodynamic parameters (e.g. ΔH° and ΔS°) have been determined for intermacromolecular complexes of poly(methacrylic acid) and poly(acrylamide) (PAm)/poly(vinyl alcohol) (PVA) graft copolymer. These values have been compared with those obtained for the intermacromolecular complexes of corresponding homopolymers (e.g. PAm and PVA). Influence of grafting on these parameters has been explained on the basis of more favourable cooperative binding with the graft copolymer.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1987.051540109
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  • 10
    Electronic Resource
    Electronic Resource
    Modification of wood fiber surface by grafting and its effect on mechanical properties of polystyrene filled system (1989)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 173 (1989), S. 101-110 
    Details
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Polystyrol (PS) wurde mit gepfropftem thermomechanischem Zitterpappel- und Birkenzellstoff verstärkt bzw. gefüllt. Die Abhängigkeit der Zugfestigkeitseigenschaften der Verbundstoffe von verschiedenen Gehalten an Füllstoff, vom Polymergehalt der gepfropften Faser, von der Anwesenheit von Homopolymerem in der gepfropften Faser und von der Imprägnierung der Fasern mit PS wurde untersucht. PS, das mit gepfropftem Zitterpappel- und Birkenzellstoff gefüllt war, zeigte eine deutliche Verbesserung der Zugfestigkeit und des Spannungswertes. Die Bruchenergie und die Dehnung der Verbundstoffe nahm mit Zunahme der Konzentration an Füllstoff ab.
    Notes: Polystyrene (PS) was reinforced/filled with grafted thermomechanical pulp (TMP) of aspen and birch. The dependence of tensile properties of composites on different loadings of filler, on polymer loading in grafted fiber, on the presence of homopolymer in grafted fiber, and on impregnation of fibers with PS were studied. PS filled with grafted aspen and birch (lower polymer loading) showed a significant increase in tensile strength and modulus. Fracture energy and elongation of the composites decreased with an increase in the concentration of filler.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1989.051730108
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