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  • 1
    Electronic Resource
    Electronic Resource
    ABMR-Ramsey patterns of strongly field dependent transitions of lithium at high magnetic fields (1977)
    Springer
    The European physical journal 282 (1977), S. 249-251 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Using the atomic beam magnetic resonance method we observed Ramsey patterns of strongly field dependent transitions of Li, Na and Rb at high magnetic fields. The structures were of high symmetry, with half widths of the central minimums between 20 kHz and 6 kHz. In a first experiment we determined theg J -factor ratiog J (6Li)/g J (7Li)=1+3(70)·10−10.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01414891
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  • 2
    Electronic Resource
    Electronic Resource
    Verschiedenes (1979)
    Springer
    Archives of gynecology and obstetrics 228 (1979), S. 542-558 
    Details
    ISSN: 1432-0711
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02427523
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  • 3
    Electronic Resource
    Electronic Resource
    Mikrobestimmung von Spuren von Saponinglykosiden in ”nicht-saponinführendem“ Pflanzenmaterial (1977)
    Springer
    Microchimica acta 68 (1977), S. 597-605 
    Details
    ISSN: 1436-5073
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Summary A method of densitometric microdetermination of standard saponins (digitonin and aescin) according to the hemolysis test on thin-layer plates was described. This method was used to demonstrate and determine unknown saponins in plant extracts. Calibration curves were given for the hemolysis test and also for the HClO4− and anisaldehyde tests. In the region from 6 to 25μg saponin in the chromatogram spot, a conversion factor for 10μg saponin was used. Because of the specificity and the high sensitivity of the hemolysis test, after the chromatographic separation of concomitant substances the densitometric method is eminently suitable for unequivocal detection and determination of saponins in series of extracts of plant material which as previously been regarded in the specialist literature as “not containing saponin”.
    Notes: Zusammenfassung Eine Methode zur densitometrischen Mikrobestimmung von Standardsaponinen (Digitonin und Aescin) nach dem HämolySciest auf Dünnschichtplatten wurde beschrieben. Diese Methode wurde zum Nachweis und zur Bestimmung unbekannter Saponine in Pflanzenextrakten herangezogen. Eichkurven für den HämolySciest und auch für die HClO4− und Anisaldehydteste wurden angegeben. Im Bereich von 6 bis 25μg Saponin im Chromatogrammfleck wurde ein Umrechnungsfaktor für 10μg Saponin benutzt. Wegen der Spezifität und der hohen Empfindlichkeit des HämolySciestes nach der chromatographischen Trennung von Begleitstoffen eignet sich das densitometrische Verfahren vorzüglich zur eindeutigen Feststellung und serienmäßigen Bestimmung von Saponinen in Extrakten von Pflanzenmaterial, das in der Fachliteratur als nichtsaponinfuhrend gilt.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01196246
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  • 4
    Electronic Resource
    Electronic Resource
    Electron microscopical study of pyro-carbon microneedles grown by high field pyrolysis (1975)
    Springer
    Applied physics 6 (1975), S. 111-118 
    Details
    ISSN: 1432-0630
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Investigations with transmission electron microscopy and selected area electron diffraction demonstrated that high field polymerization products grown at room temperature with benzonitrile are of needle shape and have an amorphous structure. High field pyrolyzation products which originated at high temperatures (1200° C) display a morphologically similar, but mechanically more stable composition as well as a larger number of needles per unit area. Their structure corresponds to an arrangement of layers of graphitelike regions concentric to the needle axis. According to the evaluation of the electron diffraction diagrams obtained, it was possible to image directly in the electron microscope the curved lattice planes of the high field pyrolyzation products, in close agreement with the net plane distance of the 001 lattice planes of graphite (3.35 Å).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00883557
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  • 5
    Electronic Resource
    Electronic Resource
    The control of fruiting body formation in the ascomycete Sordaria macrospora Auersw. by regulation of hyphal development (1978)
    Springer
    Planta 141 (1978), S. 93-103 
    Details
    ISSN: 1432-2048
    Keywords: Arginine ; Biotin ; Fruiting body ; Fungi ; Sordaria
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The morphological effects of biotin and L-arginine on fruiting body formation of the ascomycete Sordaria macrospora are investigated by scanning electron and light microscopy. Biotin is recognized as an elongation factor and arginine as a branching factor in vegetative and reproductive hyphae. In the absence of exogenous biotin, development is blocked after the ascogonium-core hypha stage of protoperithecial morphogenesis, whereas linear growth of the myceliar front is maintained. The addition of exogenous arginine to a biotin deficient culture induces the formation of numerous side branches even in the older mycelium. Fruiting body formation, however, remains blocked at the protoperithecial stage as before, because of the inability of the side branches to elongate. When biotin and arginine are administered simultaneously, a most vigorous branching and growth are induced in the older mycelium, accompanied by a rapid and maximal formation of fruiting bodies. The results are summarized in a model of the exogenous control of hyphal morphogenesis. The model is designed to explain the relationship between fruiting and hyphal density as well as the edge effect on fruiting body formation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00387750
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  • 6
    Electronic Resource
    Electronic Resource
    172. Ergebnisse der Linkshemikolektomie mit und ohne vorgeschaltetem Entlastungs-Anus (1978)
    Springer
    Langenbeck's archives of surgery 347 (1978), S. 662-662 
    Details
    ISSN: 1435-2451
    Keywords: Loop colostomy ; Surgery, colonic ; Entlastungsanus bei Linkshemicolektomie
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Von 1963–1977 wurden 561 Patienten wegen Tumorerkrankungen und Divertikulose behandelt. Die Resektionsrate betrug 93%. Bei 209 Resektionen ohne Schutzcolostomie betrug die Rate der klinisch manifesten Nahtbrüche 12% (25 Patienten), die Letalität 4,8% (10 Patienten). Bei dem Vergleichskollektiv von 152 Resektionen unter Colostomieschutz war die Rate der Anastomoseninsuffizienzen mit 2,6% (4 Patienten) und die Letalität mit 1,3 (2 Patienten) niedriger. Aufgrund dieses Ergebnisses ist das zweizeitige Verfahren dem einzeitigen vorzuziehen.
    Notes: Summary Some 561 patients suffering from carcinoma and diverticulitis of the colon were treated from 1963 to 1977. Results of 361 resections: 209 resections done without loop colostomy showed anastomotic leakage in 12% and a mortality of 4.8%; in 152 resections done with loop colostomy, we found a leakage of 2.6% and a mortality of 1.3%. Because of these results, we propose in general a loop colostomy in left colonic surgery.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01579465
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