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  • 1
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    Unknown
    Marine Biological Laboratory (Woods Hole, Mass.) | Arizona Board of Regents
    In:  Charles Otis Whitman Papers, Box 3. Folder 1 C, Item 2.2. Marine Biological Archives
    Publication Date: 2023-01-12
    Description: The desire to maintain the laboratory and requesting the support of the Carnegie Institution.
    Description: Typed; good conditions.
    Description: 2 pages
    Description: Correspondence
    Keywords: People
    Repository Name: Woods Hole Open Access Server
    Language: English
    Type: Text
    Format: Image/tif
    Format: Application/pdf
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  • 2
    Publication Date: 1988-08-05
    Description: Spectra of the region just above the bright limb of the Moon show weak emission features that are attributed to resonant scattering of sunlight from sodium and potassium vapor in the lunar atmosphere. The maximum omnidirectional emission flux above the bright limb is 3.8 +/- 0.4 kilorayleighs for sodium and 1.8 +/- 0.4 kiloray-leighs for potassium. The zenith column densities above the subsolar point are estimated to be 8 +/- 3 x 10(8) atoms cm(-2) for sodium 1.4 +/- 0.3 x 10(8) atoms cm(-2) for potassium. Corresponding surface densities are 67 +/- 12 atoms cm(-3) and 15 +/- 3 atoms cm(-3), respectively. The scale height for the sodium atmosphere is 120 +/- 42 kilometers, and for potassium 90 +/- 20 kilometers, which implies that the effective temperature of the sodium and potassium is close to the lunar surface temperature. The sodium density at the south polar region was found to be similar to that at the subsolar point, indicating wide-spread distribution of sodium vapor over the lunar surface. The ratio of the density of sodium to the density of potassium is (6 +/- 3) to 1, which is close to the sodium to potassium ratio in the lunar surface, suggesting that the atmosphere originates from the vaporization of surface minerals.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Potter, A E -- Morgan, T H -- New York, N.Y. -- Science. 1988 Aug 5;241(4866):675-80.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17839078" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 3
    Publication Date: 1990-05-18
    Description: Monochromatic images of Mercury at the sodium D(2) emission line showed excess sodium emission in localized regions at high northern and southern latitudes and day-to-day global variations in the distribution of sodium emission. These phenomena support the suggestion that magnetospheric effects could be the cause. Sputtering of surface minerals could produce sodium vapor in polar regions during magnetic substorms, when magnetospheric ions directly impact the surface. Another important process may be the transport of sodium ions along magnetic field lines toward polar regions, where they impact directly on the surface of Mercury and are neutralized to regenerate neutral sodium atoms. Day-to-day variations in planetary sodium distributions could result from changing solar activity, which can change the magnetosphere in time scales of a few hours. Observations of the sodium exosphere may provide a tool for remote monitoring of the magnetosphere of Mercury.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Potter, A E -- Morgan, T H -- New York, N.Y. -- Science. 1990 May 18;248(4957):835-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17811832" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 4
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    American Association for the Advancement of Science (AAAS)
    Publication Date: 1991-05-17
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Killen, R M -- Potter, A E -- Morgan, T H -- New York, N.Y. -- Science. 1991 May 17;252(5008):974-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17843230" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Development genes and evolution 11 (1901), S. 346-381 
    ISSN: 1432-041X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Zusammenfassung 1) Kurze Stammstücke von Tubularia bringen oft nur Theile des ganzen Hydranten hervor, vgl. Fig.B–G, oft auch doppelte Theile, vgl. Fig.H–K. Die Tendenz, einen Theil eines Hydranten zu bilden (Fig.B–G), ist bei kleinen Stücken vom distalen Ende des Stockes ausgesprochener, kann aber nicht mit Hilfe des rothen Pigments erklÄt werden, das dabei etwa als Bildner auftrÄte. 2) Es giebt keinen direkten Zusammenhang zwischen der schrÄgen Stellung der Tentakelanlagen in einem schrÄg abgeschnittenen Stück und der schrÄgen Stellung des neugebildeten Hydranten. Die Stellung des Hydranten ist das Ergebnis aus negativem Stereotropismus. 3) Die Entwickelung eines Theiles eines Hydranten aus kleinen Stücken scheint mit der geringen Grö\e des betreffenden Stückes zusammenzuhÄngen, oder mit anderen Worten, aus einem Stück geht eine gro\e unvollendete, nicht eine kleine vollendete Struktur hervor, d. h. eine grö\er angelegte Organisation, obgleich nur ein Theil einer ganzen, wird hervorgebracht an Stelle einer vollstÄndigen Organisation von geringerer Grö\e. Der Faktor, welcher die Entscheidung zwischen den verschiedenen Möglichkeiten bedingt, ist noch nicht gefunden. 4) Es giebt eine Minimalgrö\e der Stücke, unterhalb welcher weder ein Hydrant noch ein Theil eines solchen zur Entwickelung gelangt.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Development genes and evolution 13 (1901), S. 179-212 
    ISSN: 1432-041X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Development genes and evolution 15 (1902), S. 238-313 
    ISSN: 1432-041X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Development genes and evolution 15 (1902), S. 314-318 
    ISSN: 1432-041X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Zusammenfassung Die vorstehend geschilderten Ergebnisse zeigen, dass die Gegenwart des Notochords an der Schnittfläche nöthig ist, wenn sich bei der Kaulquappe ein neuer Schwanz regeneriren soll. Beim Fehlen des Notochords ist der am Schnittende vorhandene Nervenstrang für die Regeneration eines neuen Schwanzes nicht ausreichend. Fehlen beide, so bildet sich an der Schnittfläche kein neuer Schwanz. In denjenigen Fällen, in denen zunächst kein Notochord an der Schnittfläche vorhanden ist (Fig. XI), kann es sich regeneriren und durch die Schnittregion ausdehnen. Nachdem es auf diesem Wege das Niveau der Querschnittsfläche erreicht hat, kann sich dann noch ein neuer Schwanz regeneriren (Fig. XI).
    Notes: Conclusions The foregoing results show that the presence of the notochord at the cut-surface is necessary for the regeneration of a new tail of the tadpole. In the absence of the notochord, the nerve-chord, if present at the cut end, is insufficient for the regeneration of a new tail. And in the absence of both notochord and nerve-cord at the cut-surface a new tail is not formed. In those cases in which the notochord is not present at first at the cut-surface (Fig. XI), it may regenerate and extend through the cut-region, and after reaching in this way the level of the cross-cut surface a new tail may then regenerate (Fig. XI).
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Development genes and evolution 10 (1900), S. 120-134 
    ISSN: 1432-041X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Development genes and evolution 10 (1900), S. 58-119 
    ISSN: 1432-041X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
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