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  • Inorganic Chemistry  (765)
  • Life and Medical Sciences  (370)
  • Humans
  • 2015-2019
  • 1975-1979  (1,359)
  • 1950-1954
  • 1978  (1,359)
Collection
Keywords
Publisher
Years
  • 2015-2019
  • 1975-1979  (1,359)
  • 1950-1954
Year
  • 1
    Electronic Resource
    Electronic Resource
    Über TlPd3O4 und TlPt3O4 - ternäre Platinmetalloxide mit Käfigstruktur (1978)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 443 (1978), S. 11-18 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: TlPd3O4 and TlPt3O4 - Ternary Platinum Metal Oxides with Cluster StructureThe crystal structure of the cardinal red oxide TlPd3O4, prepared by the reaction of Pdo with TlNO3 or Tl2O3 at 550°C, has been determined on powder samples by X-ray and neutron diffraction. The structure of the cubic compound (a = 959.6(2) pm; space group Fm3m; Z = 8) contains square-planar PdO4 units which are joined to a three dimensional skeleton by triply bonding oxygen atoms. The cubic and rhombicuboctahedral spaces are occupied by TlIII and TlI cations so that the compound can be formulated as a mixed valency thallium(III)-thallium(I)-oxopalladate(II). The relationship with the structure of the platinum bronzes is discussed.The analogous ternary platinum oxide TlPt3O4 (a = 966.3(2)pm) has been obtained by thermal decomposition of Tl2Pt2O7.
    Notes: Die Kristallstruktur des durch Umsetzung von Pdo mit TlNO3 bzw. Tl2O3 bei 550°C erhaltenen kardinalroten Oxides TlPd3O4 wurde durch Röntgen-und Neutronenbeugung an Pulverproben aufgeklärt. In der Struktur der kubischen Verbindung (a = 959,6(2) pm; Raumgruppe Fm3m; Z = 8) sind quadratisch planare Pdo4- Baugruppen über dreibindige O- Atome zu einem dreidimensionalen Netz verknüpft. Die würfelförmigen und rhombendodekaedrischen Hohlräume des Gerüstes sind von TlIII-bzw. TlI-Kationen besetzt, so daß die Verbindung als valenzgemischtes Thallium (III)-thallium(I)-oxopalladat(II) formuliert werden kann. Die Verwandtschaftsverhältnisse zu den Strukturen der Platinbronzen werden diskutiert.Das entsprechende Oxoplatinat TlPt3O4 (a = 966,3(2) pm) konnte durch thermische Zersetzung von Tl2Pt2O7 erhalten werden.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19784430102
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  • 2
    Electronic Resource
    Electronic Resource
    biuz aktuell (1978)
    Weinheim : Wiley-Blackwell
    Biologie in unserer Zeit 8 (1978), S. 192-193 
    Details
    ISSN: 0045-205X
    Keywords: Life and Medical Sciences
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/biuz.19780080608
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  • 3
    Electronic Resource
    Electronic Resource
    Das große Buch der Meeresmuscheln: Schnecken und Muscheln der Weltmeere. Von P. Dance. Deutsche Übersetzung und Bearbeitung Rudo von Cosel. Verlag Eugen Ulmer, Stuttgart. 304 Seiten, 1520 Farbfotos und 73 Zeichnungen. Kunststoff mit Schutzumschlag (Großformat). DM 88, -  (1978)
    Weinheim : Wiley-Blackwell
    Biologie in unserer Zeit 8 (1978), S. 127-127 
    Details
    ISSN: 0045-205X
    Keywords: Life and Medical Sciences
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/biuz.19780080413
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  • 4
    Electronic Resource
    Electronic Resource
    Allgemeine Zoologie. Begründet von A. Kühn, neubearbeitet von Prof. Dr. E. Hadorn und Prof. Dr. R. Wehner, Zürich. 19., überarbeitete und erweiterte Auflage, 1974. 553 Seiten, 285 Abbildungen. Georg Thieme Verlag, Stuttgart. Gemeinschaftsausgabe mit dem Deutschen Taschenbuch Verlag München. Format 12 × 19 cm. Flexibles Taschenbuch. DM 15,80 (1978)
    Weinheim : Wiley-Blackwell
    Biologie in unserer Zeit 8 (1978), S. 32-32 
    Details
    ISSN: 0045-205X
    Keywords: Life and Medical Sciences
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/biuz.19780080109
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  • 5
    Electronic Resource
    Electronic Resource
    Neue 1,3,2,4-Diazadiphosphetidine (1978)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 111 (1978), S. 1180-1194 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: New 1,3,2,4-DiazadiphosphetidinesThe 1,3,2,4-diazadiphosphetidines 5a-f are easily prepared by the reaction of chlorobis(dialkylamino)phosphanes with sodium bis(trimethylsilyl)amide. Further oxidation reactions by O2, S8, N3Si(CH3)3, and alkyl halides are tested in detail in the case of 5a. As shown by NMR spectroscopy, 5a-f are obtained from synthesis almost exclusively as cis isomers which on thermal treatment form a mixture of cis and trans isomers. Methoiodide adducts 9a-f show this isomerisation as well.
    Notes: Die Reaktion von Chlorbis(dialkylamino)phosphanen mit Natrium-bis(trimethylsilyl)amid eröffnet einen bequemen Weg zu den 1,3,2,4-Diazadiphosphetidinen 5a-f, deren Erst- und Zweitoxidation durch O2,S8, N3Si(CH3)3 und Alkylhalogenide am Beispiel von 5a ausführlicher untersucht wird. 5a-f fallen bei der Darstellung fast ausschließlich als cis-Isomere an, die thermische Behandlung führt  -  wie NMR-spektroskopisch gezeigt wird  -  zu einem cis-trans-Isomerengemisch. Auch die Methoiodide 9a-f zeigen cis-trans-Isomerisierung.
    Additional Material: 6 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19781110336
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  • 6
    Electronic Resource
    Electronic Resource
    1,2,7-Azadiphosphepine  -  neue Phosphor und Stickstoff enthaltende Heterocyclen (1978)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 111 (1978), S. 1655-1658 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1,2,7-Azadiphosphepines  -  New Phosphorus and Nitrogen Containing Heterocycles1 reacts with 2 moles of 2 to give the bicyclic compound 3 containing the new 1,2,7-azadiphosphepine ring system. Diphosphinoamines 5 can be considered as three-membered segments of the eight-membered ring system 1. Thus the amines 5 react with 2 likewise to give monocyclic 1,2,7-azadiphosphepines 6.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19781110448
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  • 7
    Electronic Resource
    Electronic Resource
    Fine structure of the secretory and non-secretory ameloblasts in the frog. II. Fine structure of the non-secretory ameloblastThis investigation was supported in part by USPHS Research Grant DE 3724. (1978)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 158 (1978), S. 181-197 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: The non-secretory ameloblasts present at the enamel-free surfaces of maxillary teeth in the frog Rana pipiens were examined by electron microscopy at different stages of tooth development. Their main fine structural features seem to reflect a transport function. During early tooth development, the non-secretory ameloblasts adjacent to odontoblasts and predentin exhibit extensive lateral surface specializations and numerous cytoplasmic vesicles. During late tooth development, the non-secretory ameloblasts adjacent to mineralizing dentin show numerous cellular junctions, well-developed intercellular channels with numerous interdigitating processes and labyrinthine configurations at their distal surfaces. An intact basal lamina is present between the non-secretory ameloblasts and the dentin surface until the dentin becomes fully mineralized. At this stage the adjacent cells no longer exhibit surface specializations.It is suggested that the non-secretory ameloblasts may participate in the mineralization of adjacent dentin at the enamel-free surfaces. This surface dentin becomes fully mineralized at a later stage of development than the underlying dentin.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1051580205
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  • 8
    Electronic Resource
    Electronic Resource
    A topographical study of the distribution of end-plates in the cutaneus pectoris, sartorius, and gastrocnemius muscles of the frog (1978)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 155 (1978), S. 327-348 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: End-plate distributions have been determined for three frog muscles of different morphology in order to relate end-plate topography to spatial muscle structure and nerve branching. Koelle's cholinesterase technique was applied, both on whole muscles and frozen sections. The end-plates of the short parallel-fibered cutaneus pectoris muscle appeared to be located in short bands along the nerve branches. The nerve tree is restricted to a zonal area across the middle part of the muscle. Depending on the way the nerve branches, the end-plate bands form innervation patterns, varying from one single continuous band to multiple distributed bands. In the latter case one frequently observes that different end-plate bands do not run across the same longitudinal muscle fiber area, although the respective nerve branches run parallel across this area. The long parallel-fibered sartorius muscle has a wider nerve tree and exhibits the same phenomenon for close parallel nerve branches, but end-plate bands along parallel nerve branches far apart cover the same muscle fiber area. The end-plate distribution in the bipennate, short-fibered gastrocnemius is zonal throughout the muscle except in certain compartments containing tonic fibers. The end-plate zone centers around the inner aponeurosis about half-way between the muscle tendon junctions of the fibers and is visible only at the muscle surface where muscle fibers run over their entire length at that surface. The results are of general use in the electrophysiology of neuromuscular transmission because they illustrate how in certain twitch muscles neuromuscular morphology may help to localize end-plates.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1051550306
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  • 9
    Electronic Resource
    Electronic Resource
    The isolation of a low molecular weight serum factor which enhances the viability of sv3t3 cells (1978)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Cellular Physiology 96 (1978), S. 147-153 
    Details
    ISSN: 0021-9541
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: A serum factor which enhances the growth/viability of SV40 transformed 3T3 mouse fibroblasts, but not untransformed 3T3 cells in tissue culture has been partially purified from calf serum. The purification, which involves acidification to pH 2, chromatography on Sephadex G-100 at pH 2 followed by either Sephadex G-25 or BioGel P-2, results in material exhibiting two ninhydrin positive spots on thin layer chromatography and five to six dansylatable bands on SDS gels. This substance, termed Peak III or Serum Factor III, has been found in every serum examined thus far (including calf, rat, mouse, goat, lamb, rabbit, pig, horse, and chicken) and appears to be a low molecular weight, heat-insensitive molecule. Attempts to characterize it by chemical analyses and specific enzymatic inactivation have been either negative or inconclusive.Its biological mode of action is presently obscure. While it does not affect DNA synthesis, it does greatly increase the viability of SV3T3 cultures growing in low serum (0.15-0.30% calf serum) medium and, when added to “stationary phase” cells, restores healthy proliferation. This and evidence reported by others suggest that Peak III may affect SV3T3 cells in either overcoming a potentially lethal block in G1 or in passage through G2/M.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jcp.1040960203
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  • 10
    Electronic Resource
    Electronic Resource
    Papillary projections at the lingual margin in the striped dolphin, Stenella coeruleoalba, with Special Reference to Their Development and Regression (1978)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 157 (1978), S. 33-47 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Papillary projections along the anterolateral margin of the tongue were observed in fetal and young stages of the striped dolphin, Stenella coeruleoalba. Papillary projections appear in the prenatal period and attain maximum development in the early postnatal period. They almost disappear by weaning. Vestigial eminences remain at the corresponding region, but they completely disappear in the adult. The papillary projections observed differ markedly from the lingual papillae of the general mammalian tongue as they are temporary, localized at the anterolateral margin and large in size. The projections were also present in young individuals of some other dolphins. No taste buds could be seen on the projections in any of the stages of all specimens observed. Such projections may have important mechanical functions during suckling in these mammals.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1051570104
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