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  • 1
    Electronic Resource
    Electronic Resource
    Electronic tagging and population structure of Atlantic bluefin tuna (2005)
    [s.l.] : Macmillian Magazines Ltd.
    Nature 434 (2005), S. 1121-1127 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Electronic tags that archive or transmit stored data to satellites have advanced the mapping of habitats used by highly migratory fish in pelagic ecosystems. Here we report on the electronic tagging of 772 Atlantic bluefin tuna in the western Atlantic Ocean in an effort to identify ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/nature03463
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  • 2
    Electronic Resource
    Electronic Resource
    Satellite tagging Expanded niche for white sharks (2002)
    [s.l.] : Nature Publishing Group
    Nature 415 (2002), S. 35-36 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Until the advent of electronic tagging technology, the inherent difficulty of studying swift and powerful marine animals made ecological information about sharks of the family Lamnidae difficult to obtain. Here we report the tracking of movements of white sharks by using pop-up satellite ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/415035b
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  • 3
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    CREATING A CULTURE ALL EMPLOYEES CAN ACCEPT (1989)
    Saranac Lake, N.Y., etc. : Periodicals Archive Online (PAO)
    Management Review. 78:7 (1989:July) 41 
    Details
    ISSN: 0025-1895
    Topics: Economics
    Notes: Features
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:7504-1989-078-07-000005
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  • 4
    Electronic Resource
    Electronic Resource
    Visualization of centriole-bodies using silver stain (1977)
    Springer
    Chromosoma 65 (1977), S. 9-20 
    Details
    ISSN: 1432-0886
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Duplicate staining of human metaphase chromosomes, first with Giemsa followed by silver, revealed the presence of two small silver-stained bodies not seen in the Giemsa stained metaphases. Similar bodies were subsequently found in the metaphases of several animal groups. The size, structure, spatial relationships to the nucleus, behavior throughout the cell cycle, and apparent universal presence of these bodies suggest that they are either centrioles or associated centriolar structures. These centriole-bodies can be seen throughout the cell cycle, even in hypotonically spread C-metaphase chromosome plates. The silver stain procedure allows enough resolution to distinguish parent and daughter centriole-bodies at interphase, thus permitting visualization of the replication, maturation and separation stages of these bodies with the light microscope.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00293127
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  • 5
    Electronic Resource
    Electronic Resource
    Silver stain reveals nucleolus organizer regions on a satellited Yq chromosome (1978)
    Springer
    Human genetics 〈Berlin〉 42 (1978), S. 245-250 
    Details
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Chromosomes from a patient with a satellited Yq were stained with a silver procedure that differentially stains nucleolus organizer regions. The Yqs stained heavily in all cells examined, indicating the presence of ribosomal cistrons at this region. The Yqs also entered into satellite associations with the D and G group chromosomes at a frequency greater than would be expected through chance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00291303
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  • 6
    Electronic Resource
    Electronic Resource
    Endothermy in fishes: a phylogenetic analysis of constraints, predispositions, and selection pressures (1994)
    Springer
    Environmental biology of fishes 40 (1994), S. 283-302 
    Details
    ISSN: 1573-5133
    Keywords: Endothermy ; Phylogeny ; Character evolution ; Scombroidei ; Tunas ; Billfishes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Synopsis Endothermy, the ability to raise body temperature by internal heat production, is unusual in teleost fishes and has only been documented within one suborder, the Scombroidei. Two separate modes of endothermy have evolved in the scombroidei; tunas warm their muscles, brain and viscera using heat exchangers in the circulation to these metabolically active tissues while billfishes and one primitive mackerel have a thermogenic organ situated beneath the brain. Both modes of endothermy emphasize common themes. Large body size coupled with heat exchangers are necessary to reduce convective and conductive heat exchange. A tissue with a high oxidative capacity is required for heat generation. Studies based upon morphology and mitochondrial DNA analyses indicate that endothermy has evolved independently at least three times within the scombroid lineage. Mapping of-morphological and physiological traits on a molecular phylogeny for scombroids provides evidence of selective pressures favoring evolution of diverse endothermic styles. The new results suggest anatomical constraints prevent most fish from using the tuna form of endothermy and indicate a possible linkage between endothermy and locomotory style (thunniform or sub-carangiform).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00002518
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  • 7
    Electronic Resource
    Electronic Resource
    Warm brain and eye temperatures in sharks (1985)
    Springer
    Journal of comparative physiology 156 (1985), S. 229-236 
    Details
    ISSN: 1432-136X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary 1. Temperatures in the brain and eyes of mako and porbeagle sharks (Lamnidae) are 5°C warmer than the water while the brain and eye temperatures in six other species of pelagic sharks are within 0.1°C of water temperature. 2. An orbital rete mirabile is present in the porbeagle and mako sharks but absent in the cranial vasculature of eleven other species of pelagic sharks. 3. The orbital rete in the head of the porbeagle and mako sharks acts as a heat exchanger which conserves metabolic heat and raises the local tissue temperatures. 4. This brain and eye warming system should buffer the central nervous system from the effects of rapid temperature change. Warming of the retina may improve the visual sensitivity of these active predators.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00695777
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  • 8
    Electronic Resource
    Electronic Resource
    Di-π-cyclopentadienyl-titan(IV)-pentaselenid und -pentasulfid, zwei Hetero-cyclohexachalkogene in fixierter Konformation (1968)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 101 (1968), S. 272-276 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Ausgehend von (C5H5)2TiCl2 (1) und Ammonium- oder Alkalipolyseleniden bzw. -polysulfiden wurden die beständigen ringförmigen Pentachalkogenide (C5H5)2TiSe5 (2) und (C5H5)2TiS5 (3) dargestellt. Ihre H-NMR-Spektren zeigen eine charakteristische Temperaturabhängigkeit, die als thermisch angeregtes Umklappen von bei Raumtemperatur fixierten Konformationen der Ti(Chalkogen)5-Sechsringe gedeutet wird.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19681010136
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  • 9
    Electronic Resource
    Electronic Resource
    Metallorganische Polychalkogenid-Chelate, I. Bildung von Titana-cyclohexaschwefel aus Polysulfiden (1969)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 102 (1969), S. 1504-1508 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: (C5H5)2TiCl2 (1) reagiert mit Natriumpolysulfiden Na2S2 bis Na2S7 sowie mit den Ammoniumpolysulfiden (NH4)2Sx, (NH4)2S5 und (C5H10NH2)2S7 unabhängig von deren Schwefelgehalt in allen untersuchten Reaktionsmedien selektiv zum Penta sulfid (C5H5)2TiS5 (2), das die Struktur eines Titana-cyclohexaschwefels besitzt. Titana-cyclopolyschwefel mit von sechs abweichender Ringgröße tritt unter den Versuchsbedingungen nicht auf.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19691020510
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  • 10
    Electronic Resource
    Electronic Resource
    Structure of the brain and eye heater tissue in marlins, sailfish, and spearfishes (1986)
    New York, NY : Wiley-Blackwell
    Journal of Morphology 190 (1986), S. 169-189 
    Details
    ISSN: 0362-2525
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Medicine
    Notes: Marlins, sailfish, and spearfishes have a heat-producing tissue beneath the brain and adjacent to the eyes. This tissue warms the brain and eyes while the rest of the body remains at water temperature. The heater tissue is derived from the superior rectus eye muscle. Only a portion of this eye muscle contains normal skeletal muscle tissue; the rest consists of the modified muscle tissue that is associated with heat production. The heat-producing portion is supplied with blood through a countercurrent heat exchanger that originates from the carotid artery. The vascular rete prevents the heat being produced by the tissue from being dissipated at the gill. An unusual circulatory supply to the eyes and brain is associated with the presence of the heater tissue in these fishes.
    Additional Material: 13 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jmor.1051900203
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