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  • 11
    Electronic Resource
    Electronic Resource
    Elektronenmikroskopie der oberflächen grober teilchen (Prüfung des polystyrol-quarzabdruckverfahrens auf formgetreue abbildung von vanadinpentoxydstäbchen) (1949)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 4 (1949), S. 50-54 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Les bâtonnets d'une solution colloidale de vanadium pentoxyde ont été appliqués sur un porte-objet en verre. L'examen au microscope électronique de la surface, d'aprés la méthode d'emprinte polystyrol-silice, montre les bâtonnets séparés, dont la forme et la grandeur sont quelque peu défigurées.
    Abstract: A thick layer of a sol of vanadium pentoxide with thread-like particles has been put on a glass slide. The electron-microscopic examination by means of the polystyrenesilica-replica-method shows the single threads in the surface of the dried layer. Only this method reproduces form and size of the threads somewhat distorted.
    Notes: Vanadinpentoxydstäbchen wurden aus einem Sol in dicker Schicht auf Glas aufgetragen. Die Oberfläche des Belages wurde nach dem Polystyrol-Quarzabdruckverfahren elektronenmikroskopisch untersucht. Die Stäbehen sind einzeln sichtbar. Das Abdruckverfahren gibt aber die Stäbchengröße und -gestalt etwas verzerrt wieder.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1949.020040104
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  • 12
    Electronic Resource
    Electronic Resource
    Elektronenmikroskopie der Oberfläche von Textilfasern (1951)
    New York : Wiley-Blackwell
    Die Makromolekulare Chemie 6 (1951), S. 15-24 
    Details
    ISSN: 0025-116X
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: The method of Polystyrene-Quarz-Replica can be used easily for small pieces of tissues. The description of structures of surfaces made by earlier authors is corroborated and some new structures are described.
    Notes: Das Polystyrolquarz-Abdruckverfahren kann in einfacher Weise auf kleine Gewebsstücke angewendet werden. Oberflächenstrukturen, die von früheren Autoren beschrieben wurden, konnten bestätigt und einige neue Strukturen beobachtet werden.
    Additional Material: 16 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/macp.1951.020060102
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  • 13
    Electronic Resource
    Electronic Resource
    In-product jojoba determination using anticircular high performance thin layer chromatography (1985)
    Weinheim : Wiley-Blackwell
    Journal of High Resolution Chromatography 8 (1985), S. 19-22 
    Details
    ISSN: 0935-6304
    Keywords: Thin layer chromatography, HPTLC ; Anticircular mode ; Cosmetic emulsions ; Jojoba wax ester quantitation ; Triglyceride quantitation ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Cosmetic creams were analyzed for their content of jojoba wax and shea fat using anticircular HPTLC, a fast, precise, and reliable method. After optimization of the solvent system (petrol ether/diethyl ether) for the separation of jojoba wax and shea fat, the spots were visualized with phosphomolybdic acid by the “dip-in” technique, subsequently heated, and finally recorded by scanning with a densitometer at 546 nm. Results showed that one particular concentration range gives an optimum correlation between calibration curves and sample evaluations.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jhrc.1240080105
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  • 14
    Electronic Resource
    Electronic Resource
    Sample collection, quantification, and identification in preparative anticircular planar chromatography (1986)
    Weinheim : Wiley-Blackwell
    Journal of High Resolution Chromatography 9 (1986), S. 218-223 
    Details
    ISSN: 0935-6304
    Keywords: High performance planar chromatography, HPPLC ; Preparative anticircular chromatography (PACH) ; Sample collection ; Quantification ; Silica Gel (20 × 20 and 10 × 10 cm) plates ; RP-18 (20 × 20 and 10 × 10 cm) plates ; Unsaponifiables from plant lipids ; Fatty acid methyl esters ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A preparative anticircular chromatography (PACH) device was constructed to elucidate different applications of separation problems as well as to compare different sample collection techniques in this particular PLC mode. An anticircular PC apparatus had to be established which allowed the utilization of 20 X 20 cm thin-layer plates as well as sampling positioning at any given radius. Typical solvent migration times were 8-12 minutes and ca. 8-10 ml of solvent was needed for an entire 20 cm plate. It was shown that peak broadening effects due to diffusion during long migration could be avoided in the same way as for analytical anticircular PLC on 10 X 10 plates. On the other hand, longer migration distances allow increased resolution, in turn allowing higher sample loads, particularly in the case of trace compound enrichment. A full description of the apparatus is given, including the sampling device.Different sample collection techniques were tried and evaluated, including the through-flow technique by on-line center collection for plate washing as well as classical scraping-off of interesting zones. Further evaluation of the method included quantification and evaluation of consistency by UV/VIS scanning after spot-visualization. Several application examples are given to illustrate the efficiency of the preparative anticircular PLC-system.
    Additional Material: 12 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jhrc.1240090405
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  • 15
    Electronic Resource
    Electronic Resource
    Quantitative HPTLC determination of 5-hydroxytryptamides of carboxylic acids and tryptamines in food productsPresented in part aty the 2nd Int. Symposium on Instrumental High Performance Thin Layer Chromatography May 1982, Interlaken. (1982)
    Weinheim : Wiley-Blackwell
    Journal of High Resolution Chromatography 5 (1982), S. 581-582 
    Details
    ISSN: 0935-6304
    Keywords: Thin-layer chromatography, HPTLC ; Anti-circular development ; On-plate derivatization ; Visible scanning ; Quantitation ; Tryptamides/serotonin ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jhrc.1240051020
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  • 16
    Electronic Resource
    Electronic Resource
    Chemotherapie der experimentellen Tuberkulose II. Kernsubstituierte Isonicotinsäurehydrazide (1955)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 38 (1955), S. 1033-1046 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Some twenty-six isonicotinic acid hydrazides substituted in the pyridine ring by hydrocarbon groups or by functional substituents, such as hydroxy, chlorine, alkoxy, and amino, were synthesized according to conventional methods and tested for their antitubercular action.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19550380424
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  • 17
    Electronic Resource
    Electronic Resource
    Chemotherapie der experimentellen Tuberkulose III. Derivate des 2-Methyl-isonicotinsäurehydrazids (1955)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 38 (1955), S. 1046-1060 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Some fifty-two derivatives of 2-methylisonicotinic acid hydrazide were synthesized and tested for their antitubercular action. The derivatives were prepared by reaction of 2-methylisonicotinic acid hydrazide with aldehydes, ketones, and carboxylic acid chlorides, by condensation of 2-methylisonicotinic acid chloride with dialkylated hydrazines, and by hydrogenation of 2-methylisonicotinyl hydrazones.
    Additional Material: 5 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19550380425
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  • 18
    Electronic Resource
    Electronic Resource
    Synthese von Dab 1-Dab 9-Bradykinin (1961)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 44 (1961), S. 1495-1503 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Dab1-Dab9-bradykinin (Dab-Pro-Pro-Gly-Phe-Ser-Pro-Phe-Dab) has been prepared by a new procedure which differs from known syntheses of bradykinin. Against carboxypeptidase and chymotrypsin this synthetic analogue of bradykinin behaves in a way similar to that of the natural hormone, but it does not exhibit any pharmacological activity on the isolated rat uterus.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19610440607
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  • 19
    Electronic Resource
    Electronic Resource
    Synthesen in der Polymyxin-Reihe. 3. Mitteilung. Synthese eines verzweigten, geschützten Dekapeptids (1960)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 43 (1960), S. 574-582 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The protected open decapeptide XIII, related to one of the four possible structures for polymyxin B1 has been synthesized by condensing together the pentapeptides 1-2-3-4-5 and 1′-2′-6-7-8 using either the azide method or the carbodiimide procedure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19600430217
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  • 20
    Electronic Resource
    Electronic Resource
    Die Glykoside der Blätter von Digitalis canariensis L. 1. Mitteilung (1963)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 46 (1963), S. 23-45 
    Details
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Einem aus getrockneten Blättern von Digitalis canariensis L. bereiteten wässerigen Extrakt liessen sich die Glykoside praktisch vollständig durch Ausschütteln mit Chloroform-Alkohol-(4:1) entziehen. Da keine Kristalle aus dem so erhaltenen Glykosidgemisch gewonnen werden konnten, wurde dieses dem partiellen Abbau mit Strophanthobiase zur Monosidstufe unterworfen, wobei 2/5 unverändert blieben. Das Gemisch der Monoside bestand zu etwa 15% aus freien Geninen.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/hlca.19630460104
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