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  • 1
    Electronic Resource
    Electronic Resource
    Ion mobility detection after supercritical fluid chromatography (1986)
    Weinheim : Wiley-Blackwell
    Journal of High Resolution Chromatography 9 (1986), S. 154-160 
    Details
    ISSN: 0935-6304
    Keywords: Supercritical fluid chromatography ; Ion mobility detection ; Tunable, selective detection ; Fourier transform-ion mobility spectrometry ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Using a unidirectional flow ion mobility detector, non-selective detection, tunable selective detection, and complete Fourier transformed ion mobility spectra were successfully obtained after supercritical fluid chromatography on compounds with higher molecular weights than have been previously investigated. In the most selective mode, single oligomers from polymeric material could be independently detected. Using the Fourier transform capabilities of this instrument, complete ion mobility spectra for each oligomer could be obtained in a single chromatographic separation. The collection of individual ion mobility spectra of the components of polymeric material has not been possible prior to the technique described in this paper. Only complex ion mobility spectra of polymeric mixtures are available in the literature. The spectra obtained in this study are all simple, uncomplicated spectra consisting of only one or two product ion peaks. Ko values reported in this work range from 0.633 to 1.61, which are some of the lowest values ever reported in ion mobility spectrometry.With the unidirectional flow design of the detector, the supercritical fluid mobile phase, carbon dioxide, was efficiently eliminated from the detector so that the ion mobility spectrometer could be operated in its normal manner. The fact that CO2 did not interfere with normal ion mobility operation indicates that other supercritical fluids may also be compatible with this sensitive and versatile detection method.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jhrc.1240090305
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  • 2
    Electronic Resource
    Electronic Resource
    Fourier transform ion mobility spectrometry of barbiturates after capillary gas chromatography (1986)
    Weinheim : Wiley-Blackwell
    Journal of High Resolution Chromatography 9 (1986), S. 44-48 
    Details
    ISSN: 0935-6304
    Keywords: Gas chromatography, GC ; Fused silica capillary columns ; Fourier Transform Ion Mobility Spectrometry ; Ion mobility detector ; Barbiturates ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: This paper demonstrates a novel operating mode of an ion mobility detector (IMD) for obtaining both qualitative and quantitative data after capillary gas chromatographic separation of 5,5′-disubstituted barbiturates. Using a recently developed time dispersive Fourier transform method for ion mobility spectrometry, complete ion mobility spectra could be obtained for each component in the chromatogram. This type of spectra can be used for providing qualitative information on unknown compounds or for selecting the proper detector conditions needed when operating in the continuous mobility monitoring mode.In this study each of the five barbiturates investigated produced a Fourier transformed ion mobility spectrum containing one major product ion. When drift times corresponding to those of the product ions measured in the FT mode were monitored continuously, selective chromatographic detection of the barbiturates was achieved. In one case even isomers could be differentiated based on mobility characteristics.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jhrc.1240090108
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  • 3
    Electronic Resource
    Electronic Resource
    Wärmeleitung in Zwei-Phasen-Systemen fest/flüssigHerrn Professor Dr. Dr. h. c. E. Bartholomé zum 60. Geburtstag (1968)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 40 (1968), S. 1176-1180 
    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: Die von Wiener erstmals angegebenen Modelle zur Berechnung von Wärmeleitfähigkeiten werden nach einer erweiterten Modellvorstellung so kombiniert, daß damit Beziehungen für die Wärmeleitung in Suspensionen mit verschieden geformten Feststoffteilchen sowie für mögliche Orientierungen der Partikel zur Wärmeflußrichtung abgeleitet werden können. Die erhaltenen Formeln werden mit bereits bekannten Beziehungen und mit experimentellen Ergebnissen verglichen.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330402309
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  • 4
    Electronic Resource
    Electronic Resource
    Folgeprodukte halogenierter Aldehyde. I. N-(1-Hydroxy-2,2,3-trichlorpropyl)-säureamide (1974)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 316 (1974), S. 54-62 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Aliphatische und aromatische Carbonsäureamide sowie einige Harnstoff-Derivate bilden beim Erwärmen mit 2,2,3-Trichlorpropionaldehyd N-(1-Hydroxy-2,2,3-trichlorpropyl)-säureamide 2a-n. Phenyl- und Benzylharnstoff ergeben 1,1-Bis-phenylureido- (3a) bzw. 1,1-Bisbenzylureido-2,2,3-trichlorpropan 3b. Die Verbindungen 2 lassen sich mit Dimethylsulfat in Natronlauge zu den N-(1-Methoxy-2,2,3-trichlorpropyl)-säureamiden 6a-b methylieren und mit Carbonsäurechloriden in Pyridin zu den N-(1-Acyloxy-2,2,3-trichlorpropyl)-säureamiden 5a-k acylieren. Bei der Einwirkung von Acetanhydrid auf die Verbindungen 2 in Natronlauge entstehen 1,1′-Bis-acylamino-2,2,3,2′,2′,3′-hexachlor-dipropyläther 7a-c. N-(1-Hydroxy-2,2,3-trichlorpropyl)-salicylsäureamid 2n unterliegt beim Erwärmen mit Schwefelsäure einer Ringschlußreaktion unter Bildung des Dihydrobenzoxazin-Derivats 8.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19743160108
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  • 5
    Electronic Resource
    Electronic Resource
    Folgeprodukte halogenierter Aldehyde. IV [1]. Additionen von Carbonsäuren, Carbonsäureamiden und Phenolen an N-Acyl-2,2,3-trichlorpropionaldimine (1974)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 316 (1974), S. 491-495 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Durch Addition von Carbonsäuren, Carbonsäureamiden und Phenolen an N-Acyl-2,2,3-trichlorpropionaldimine 3 entstehen N-(1-Acyloxy-2,2,3-trichlorpropyl)-säureamide 1a-e, 1,1-Bis-acylamino-2,2,3-trichlor-propane 2a-g bzw. N-(1-Aryloxy-2,2,3-trichlorpropyl)-säureamide 4a-f. Die 1,1-Bis-acylamino-2,2,3-trichlor-propane 2a, c, h, i lassen sich auch durch Umsetzung von 2,2,3-Trichlorpropionaldehyd mit Nitrilen bei Gegenwart von Schwefelsäure darstellen.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19743160318
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  • 6
    Electronic Resource
    Electronic Resource
    Folgeprodukte halogenierter Aldehyde. V. N-(p-Toluolsulfonyl)-2,2,3-trichlorpropionaldimin (1974)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 316 (1974), S. 698-702 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: N-(p-Toluolsulfonyl)-2,2,3-trichlorpropionaldimin 1 wird durch Kochen von 2,2,3-Trichlorpropionaldehyd mit N-Sulfinyl-p-toluolsulfonamid in Benzol dargestellt. Es addiert Alkohole, Mercaptane und Amine unter Bildung von N-(1-Alkoxy-2,2,3-trichlorpropyl)- (3a, b), N-(1-Alkylmercapto-2,2,3-trichlorpropyl)- (4a-d) bzw. N-(1-Amino-2,2,3-trichlorpropyl)-p-toluolsulfonamiden 5a-d. Carbonsäureamide bilden mit dem Aldimin 1 1-Acylamino-1-p-toluolsulfonylamino-2,2,3-trichlor-propane 6a, b, die auch durch Anlagern von p-Toluolsulfonamid an N-Acyl-2,2,3-trichlorpropionaldimine 7 gewonnen werden können. Das Aldimin 1 ist befähigt, mit Dimethylbutadien eine DIELS-ALDER-Reaktion einzugehen, dabei entsteht das Tetrahydropyridin-Derivat 8.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19743160423
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  • 7
    Electronic Resource
    Electronic Resource
    Folgeprodukte halogenierter Aldehyde. II [1] N-Acyl-2,2,3-trichlorpropionaldimine (1974)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 316 (1974), S. 63-66 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: N-(1-Hydroxy-2,2,3-trichlorpropyl)-säureamide 1a-e lassen sich durch Kochen mit Thionylchlorid in Benzol oder durch Erwärmen mit Phosphorpentachlorid in N-(1,2,2,3-Tetrachlorpropyl)-säureamide 2a-e überführen, aus denen man durch Abspalten von Chlorwasserstoff mit Triäthylamin in Benzol oder Tetrahydrofuran die N-Acyl-2,2,3-trichlorpropionaldimine 3a-e erhält. Diese addieren leicht Wasser oder Chlorwasserstoff unter Rückbildung der Hydroxy-Verbindungen 1a-e bzw. der Tetrachlor-Verbindungen 2a-e.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19743160109
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  • 8
    Electronic Resource
    Electronic Resource
    Folgeprodukte halogenierter Aldehyde. III [1]. Additionsreaktionen der N-Acyl-2,2,3-trichlorpropionaldimine (1974)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 316 (1974), S. 443-448 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: N-Acyl-2,2,3-trichlorpropionaldimine 2 reagieren mit Schwefelwasserstoff und mit Ammoniak im Mol-Verhältnis 2:1 unter Bildung der Thioäther 1a-c bzw. der Amine 3a-d. Alkohole, Mercaptane und Amine werden an die Aldimine 2 unter Bildung von N-(1-Alkoxy-2,2,3-trichlorpropyl) (4a-m), N-(1-Alkylmercapto-2,2,3-trichlorpropyl)- (5a-i) bzw. von N-(1-Alkylamino-2,2,3-trichlorpropyl)- (6a, b, f, g) und N-(1-Arylamino-2,2,3-trichlorpropyl)-säureamiden 6c-e addiert. Die Addition von p-Nitrophenylhydrazin an die Aldimine 2 führt zu den N-(1-p-Nitrophenylhydrazino-2,2,3-trichlorpropyl)-säureamiden 6h, i.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19743160312
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  • 9
    Electronic Resource
    Electronic Resource
    Reduced 4-hydroxynonenal degradation in hearts of spontaneously hypertensive rats during normoxia and postischemic reperfusion (1994)
    New York, NY [u.a.] : Wiley-Blackwell
    Cell Biochemistry and Function 12 (1994), S. 143-147 
    Details
    ISSN: 0263-6484
    Keywords: Heart ; spontaneously hypertensive rats ; hydroxynonenal (HNE) ; aldehyde degradation ; anoxia/reoxygenation ; Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: 4-Hydroxynonenal (HNE) degradation was investigated in isolated perfused rat hearts of the WKY and SHR strains before and after ischemia. HNE (10 μmoles l-1) were infused and the concentration of HNE in the effluent was determined. The rate of initial consumption was about 50 nmoles min-1 g-1 wet weight in hearts of both the WKY and SHR rats. In the WKY rat hearts, this rate of HNE degradation did not change during several minutes of HNE infusion and also remained constant during postischemic reperfusion. In the hearts of the SHR rats the HNE degradation rate declined within 5 min to 25 nmoles min-1 g-1 wet weight. Also during postischemic reperfusion, there was a lower HNE degradation rate in the SHR rat hearts than in the WKY rat hearts. The influence of hypertrophy on the rate of HNE degradation is discussed. It is suggested that the low degradation of the cytotoxic lipid peroxidation product, HNE, in hypertrophic hearts may contribute to reduced antioxidant defence in those hearts.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cbf.290120210
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  • 10
    Electronic Resource
    Electronic Resource
    Balancing of energy-consuming processes of rat hepatocytes (1990)
    New York, NY [u.a.] : Wiley-Blackwell
    Cell Biochemistry and Function 8 (1990), S. 227-232 
    Details
    ISSN: 0263-6484
    Keywords: Energy-consuming processes ; rat hepatocytes ; oxygen consumption ; Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: A method for the quantification of energy consuming processes described by Siems et al.6 for reticulocytes and by Müller et al.10 for ascites tumour cells was applied to balance the ATP-consumption of isolated rat hepatocytes. On the basis of decreased coupled respiration rates following the specific inhibition of energy-requiring reactions, the energy demands of protein turnover, nucleic acid synthesis, Na+/K+-ATPase and Ca2+-transport of hepatocytes in different incubation media were assessed. These processes together with urea synthesis account for about 60 per cent of the total energy consumption in a glucose and amino acid-enriched Eagle/Borsook medium. The metabolic flux rates of total ATP-consumption and ATP-consumption of single energy-requiring processes in hepatocytes are compared with those in reticulocytes and different tumour cell types.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cbf.290080407
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