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  • Animals  (2)
  • Chemistry  (2)
  • Mediterranean outflow water  (2)
  • 1
    Digitale Medien
    Digitale Medien
    Ferromanganese crusts as indicators for paleoceanographic events in the NE Atlantic (1996)
    Springer
    International journal of earth sciences 85 (1996), S. 567-576 
    Details
    ISSN: 1437-3262
    Schlagwort(e): Ferromanganese crusts ; Phosphatization ; Paleoceanographic events ; NE Atlantic ; Mediterranean outflow water ; Messinian salinity crisis
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Geologie und Paläontologie
    Notizen: Abstract Hydrogenetic ferromanganese crusts reflect the chemical conditions of the sewater from which they formed. Fine-scale geochemical analysis of crust layers in combination with age determinations can therefore be used to investigate paleoceanographic changes which are recorded in geochemical gradients in the crusts. At Tropic seamount (off northwest Africa), uniform crust growth influenced by terrigenous input from the African continent occurred during approximately the past 12 Ma. Phosphatization of these crusts is minor. In contrast, crusts from Lion seamount, located between Madeira and the Portuguese coast, display a much more variable growth history. A pronounced increase in Ni, Cu, and Zn is observed in some intervals of the crusts, which probably reflects increased surface productivity. A thick older phosphatized generation occurs in many samples. Hydrographic profiles indicate that Mediterranean outflow water (MOW) may play an important role in the composition of these crusts.10Be dating of one sample confirms that the interruption of the MOW during the Messinian salinity crisis (6.2–5 Ma ago) resulted in changes in element composition. Sr-isotope dating of the apatite phase of the old crust generation has been carried out to obtain a minimum age for the older generation of Atlantic crusts and to determine whether crust phosphatization in the Atlantic can be related to phosphatization episodes recorded in Pacific crusts. The preliminary data show that the old phosphatized crust generation might be as old as approximately 30–40 Ma.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02369011
    Standort Signatur Erwartet Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Ferromanganese crusts as indicators for paleoceanographic events in the NE Atlantic (1996)
    Springer
    Geologische Rundschau 85 (1996), S. 567-576 
    Details
    ISSN: 0016-7835
    Schlagwort(e): Key words Ferromanganese crusts ; Phosphatization ; Paleoceanographic events ; NE Atlantic ; Mediterranean outflow water ; Messinian salinity crisis
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Geologie und Paläontologie
    Notizen: Abstract  Hydrogenetic ferromanganese crusts reflect the chemical conditions of the seawater from which they formed. Fine-scale geochemical analysis of crust layers in combination with age determinations can therefore be used to investigate paleoceanographic changes which are recorded in geochemical gradients in the crusts. At Tropic seamount (off northwest Africa), uniform crust growth influenced by terrigenous input from the African continent occurred during approximately the past 12 Ma. Phosphatization of these crusts is minor. In contrast, crusts from Lion seamount, located between Madeira and the Portuguese coast, display a much more variable growth history. A pronounced increase in Ni, Cu, and Zn is observed in some intervals of the crusts, which probably reflects increased surface productivity. A thick older phosphatized generation occurs in many samples. Hydrographic profiles indicate that Mediterranean outflow water (MOW) may play an important role in the composition of these crusts. 10Be dating of one sample confirms that the interruption of the MOW during the Messinian salinity crisis (6.2–5 Ma ago) resulted in changes in element composition. Sr-isotope dating of the apatite phase of the old crust generation has been carried out to obtain a minimum age for the older generation of Atlantic crusts and to determine whether crust phosphatization in the Atlantic can be related to phosphatization episodes recorded in Pacific crusts. The preliminary data show that the old phosphatized crust generation might be as old as approximately 30–40 Ma.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s005310050097
    Standort Signatur Erwartet Verfügbarkeit
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  • 3
    Digitale Medien
    Digitale Medien
    Zur Konstitution des Pigment Red 177Zweite Mitteilung «Über Strukturaufklärung von Pigmentfarbstoffen mit kombinierter Spektroskopie»; erste Mitteilung s. [1]. (1971)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 54 (1971), S. 2093-2097 
    Details
    ISSN: 0018-019X
    Schlagwort(e): Chemistry ; Organic Chemistry
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie
    Notizen: Auf Grund von Elementaranalyse sowie VIS.-, IR.-, NMR.- und Massen-Spektroskopie wird dem Pigmentfarbstoff Colour Index Pigment Red 177 die Struktur des 4,4′-Diamino-1, 1′-di-anthrachinonyls zugeschrieben.
    Zusätzliches Material: 4 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/hlca.19710540741
    Standort Signatur Erwartet Verfügbarkeit
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  • 4
    Digitale Medien
    Digitale Medien
    Strukturaufklärung zweier Pigmentfarbstoffe der Perylen-Reihe3. Mitteilung «Über Strukturaufklärung von Pigmentfarbstoffen mit kombinierter Spektroskopie»; 2. Mitteilung s. [1]. (1971)
    New York, NY : Wiley-Blackwell
    Helvetica Chimica Acta 54 (1971), S. 2924-2929 
    Details
    ISSN: 0018-019X
    Schlagwort(e): Chemistry ; Organic Chemistry
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Chemie und Pharmazie
    Notizen: The structures of C.I. Pigment Red 149 (PV Fast Red B)® and C.I. Pigment Red 178 (Paliogen Red GG)® as II and III respectively, are deduced from elemental analysis, spectroscopic data, and synthesis.
    Zusätzliches Material: 5 Ill.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1002/hlca.19710540859
    Standort Signatur Erwartet Verfügbarkeit
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  • 5
    facet.materialart.
    Unbekannt
    SLC24A5, a putative cation exchanger, affects pigmentation in zebrafish and humans (2005)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 2005-12-17
    Beschreibung: Lighter variations of pigmentation in humans are associated with diminished number, size, and density of melanosomes, the pigmented organelles of melanocytes. Here we show that zebrafish golden mutants share these melanosomal changes and that golden encodes a putative cation exchanger slc24a5 (nckx5) that localizes to an intracellular membrane, likely the melanosome or its precursor. The human ortholog is highly similar in sequence and functional in zebrafish. The evolutionarily conserved ancestral allele of a human coding polymorphism predominates in African and East Asian populations. In contrast, the variant allele is nearly fixed in European populations, is associated with a substantial reduction in regional heterozygosity, and correlates with lighter skin pigmentation in admixed populations, suggesting a key role for the SLC24A5 gene in human pigmentation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lamason, Rebecca L -- Mohideen, Manzoor-Ali P K -- Mest, Jason R -- Wong, Andrew C -- Norton, Heather L -- Aros, Michele C -- Jurynec, Michael J -- Mao, Xianyun -- Humphreville, Vanessa R -- Humbert, Jasper E -- Sinha, Soniya -- Moore, Jessica L -- Jagadeeswaran, Pudur -- Zhao, Wei -- Ning, Gang -- Makalowska, Izabela -- McKeigue, Paul M -- O'donnell, David -- Kittles, Rick -- Parra, Esteban J -- Mangini, Nancy J -- Grunwald, David J -- Shriver, Mark D -- Canfield, Victor A -- Cheng, Keith C -- CA73935/CA/NCI NIH HHS/ -- EY11308/EY/NEI NIH HHS/ -- HD37572/HD/NICHD NIH HHS/ -- HD40179/HD/NICHD NIH HHS/ -- HG002154/HG/NHGRI NIH HHS/ -- HL077910/HL/NHLBI NIH HHS/ -- RR017441/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 2005 Dec 16;310(5755):1782-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Jake Gittlen Cancer Research Foundation, Department of Pathology, The Pennsylvania State University College of Medicine, Hershey, PA 17033, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/16357253" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): African Americans/genetics ; African Continental Ancestry Group/genetics ; Alanine/genetics ; Alleles ; Amino Acid Sequence ; Animals ; Antiporters/chemistry/*genetics/physiology ; Asian Continental Ancestry Group/genetics ; Biological Evolution ; Calcium/metabolism ; European Continental Ancestry Group/genetics ; Gene Frequency ; Genes ; Genetic Variation ; Haplotypes ; Heterozygote ; Humans ; Ion Transport ; Melanins/analysis ; Melanosomes/chemistry/ultrastructure ; Mice ; Molecular Sequence Data ; Multifactorial Inheritance ; Mutation ; Pigment Epithelium of Eye/chemistry/ultrastructure ; Polymorphism, Single Nucleotide ; Selection, Genetic ; Skin Pigmentation/*genetics ; Threonine/genetics ; Zebrafish/embryology/*genetics/metabolism ; Zebrafish Proteins/chemistry/*genetics/physiology
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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  • 6
    facet.materialart.
    Unbekannt
    Discrete visual defects in pearl mutant mice (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1983-03-04
    Beschreibung: The mutant mouse pearl, characterized by its hypopigmentation, has a specific functional defect in a sensory system--the retina. The intact pearl mouse has reduced sensitivity in the dark-adapted condition. Normal sensitivity is restored by isolation and superfusion of the retina with bicarbonate-buffered Ringer solution, suggesting that the retinal expression of the pearl mutation depends on a diffusible substance. The pearl phenotype is described as a possible model for human congenital stationary night blindness.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Balkema, G W -- Mangini, N J -- Pinto, L H -- R01EY02536/EY/NEI NIH HHS/ -- New York, N.Y. -- Science. 1983 Mar 4;219(4588):1085-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6600521" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Animals ; Dark Adaptation ; *Disease Models, Animal ; Mice ; Mice, Mutant Strains/*physiology ; Night Blindness/*genetics/physiopathology ; Retina/physiopathology ; Vision, Ocular/*physiology
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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