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  • Springer  (22)
  • Blackwell Publishing Ltd  (2)
  • American Geophysical Union  (1)
  • American Geophysical Union (AGU)
  • American Meteorological Society (AMS)
  • 1980-1984  (25)
  • 1
    Electronic Resource
    Electronic Resource
    OVARIAN DEFECT IN RATS CARRYING THE GROWTH AND REPRODUCTION COMPLEX (1983)
    Oxford, UK : Blackwell Publishing Ltd
    International journal of immunogenetics 10 (1983), S. 0 
    Details
    ISSN: 1744-313X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Notes: The growth and reproduction complex contains recessive genes (grc) which influence body weight and gonadal development. Homozygous males are sterile, and they have an arrest of spermatogenesis at the primary spermatocyte stage. Homozygous females are fertile but have a reduced reproductive capacity. The data presented in this paper show that the latter defect is associated with a decrease in the relative number of secondary ovarian follicles and an increase in the number of atretic follicles. This finding indicates that most of the primary follicles do not mature properly. Thus, the genetic defect in gametogenesis controlled by the grc appears to occur at the same stage of development in both females and males.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1744-313X.1983.tb01017.x
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  • 2
    Electronic Resource
    Electronic Resource
    Respiration during seed maturation (1983)
    Oxford, UK : Blackwell Publishing Ltd
    Physiologia plantarum 57 (1983), S. 0 
    Details
    ISSN: 1399-3054
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The contribution of cytochrome and alternative pathways to respiration during soybean [Glycine max (L.) Merr. cv. Chippewa 64] seed formation and maturation was measured by oxygen consumption of embryonic axis and cotyledon tissues and of mitochondria isolated from immature seeds. Respiration rates (dry weight basis) declined duing the last month of seed maturation. Cyanide sensitive respiration (cytochrome pathway) accounted for 80 to 90% of total oxygen consumption throughout seed formation and maturation. The proportion of the total respiration resistant to 1 mM cyanide and inhibited by 1 mM salicylhydroxamic acid (alternative pathway) did not exceed 6%. A residual oxygen consumption, accounting for 5 to 15% of total respiration, persisted in the presence of both inhibitors. Likewise, virtually no alternative respiration was found in mitochondria prepared from immature seeds. The alternative respiratory pathway seems absent during soybean seed formation and maturation regardless of whether grown in the greenhouse or field.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1399-3054.1983.tb02758.x
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  • 3
    Electronic Resource
    Electronic Resource
    Die mesozoische Magnafazies-Abfolge in den nördlichen Anden (Peru, Ekuador, Kolumbien) (1980)
    Springer
    International journal of earth sciences 69 (1980), S. 875-891 
    Details
    ISSN: 1437-3262
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Description / Table of Contents: Abstract Over 100 sedimentary formations and groups are known from the epicontinental to continental Mesozoic (“Oriente Andino” sensu H.Bürgl) in the Andean region of Peru, Ecuador and Colombia. These lithostratigraphic (or facial) complexes are attached to 6 magnafacies-units which follow each other chronologically, thereby clearly evidencing a uniform paleogeographic-sedimentary development in the mentioned areas, although the geological structure of the Western respectively Coastal Cordilleras of the North (Colombia, Ecuador) is fundamentally different from that of the Southern ones (Peru, Chile).
    Abstract: Resumen Más de 100 grupos y formaciones sedimentarios des »Oriente Andino« (sensu H.Bürgl) en los Andes septentrionales (PerÚ, Ecuador, Colombia) están asociados a 6 unidades magnafaciales que se suceden cronológicamente. Este »Oriente Andino« abarca las cuencas sedimentarias de tipo epicontiental a continental de la época mesozoica. Se bosqueja así claramente, en las áreas mencionadas, una evolución paleogeográfica-sedimentológica bastante uniforme, aunque las estructuras geológicas de las Cordilleras Occidentales (o Costeras, respectivamente) de la parte septentrional (Colombia, Ecuador) se diferencian fundamentalmente de las del Sur (PerÚ, Chile).
    Notes: Zusammenfassung Die weit über 100 sedimentären Formationen und Gruppen im mesozoischen epikontinentalen bis kontinentalen „Oriente Andino“ der nördlichen Anden (Peru, Ekuador und Kolumbien) werden 6 zeitlich aufeinanderfolgenden Magnafazies-Einheiten zugeordnet. Dabei zeichnet sich deutlich eine einheitliche paläogeographisch-sedimentäre Entwicklung in den genannten Räumen ab, obwohl sich der geologische Bau der andinen West- bzw. Küstenkordilleren im Norden (Kolumbien, Ekuador) grundsätzlich vom Süden (Peru, Chile) unterscheidet.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02104651
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  • 4
    Electronic Resource
    Electronic Resource
    Jede endliche Gruppe ist Automorphismengruppe einer endlichen ErweiterungK¦ℚ (1983)
    Springer
    Archiv der Mathematik 41 (1983), S. 139-142 
    Details
    ISSN: 1420-8938
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01196869
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  • 5
    Electronic Resource
    Electronic Resource
    On the structure of the ‘red’ globular cluster NGC 1806 in the large magellanic cloud (1982)
    Springer
    Astrophysics and space science 84 (1982), S. 133-141 
    Details
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A structural study of the old globular cluster NGC 1806 in the LMC has been carried out by star counts onB- andV-ESO 3.6 m telescope plates with three different limiting magnitude levels. The star density distribution was obtained directly from the surface strip count function with the Plummer formalism and the generalized Schuster law according to Lohmann. This yields beside the central density the structural parametern and the characteristic length parameterR 0 for each individual colour and magnitude level. The results show that the blue stellar content of NGC 1806 — the horizontal branch stars — is more concentrated towards the cluster center than the red giant and subgiant objects. Also such a dynamical mass segregation is observed for the red giants compared with the subgiants.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00713631
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  • 6
    Electronic Resource
    Electronic Resource
    Identification of a blue object with a newly detected X-ray source (1983)
    Springer
    Astrophysics and space science 94 (1983), S. 291-293 
    Details
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A blue object was identified on POSS prints. Its position coincides with an X-ray source found by the HEAO-B satellite.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00653718
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  • 7
    Electronic Resource
    Electronic Resource
    X-ray emission from the W UMa system TZ Bootis (1983)
    Springer
    Astrophysics and space science 97 (1983), S. 225-227 
    Details
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract HEAO-B (Einstein) satellite measurements with the Imaging Proportional Counter revealed the W UMa binary system TZ Bootis as an X-ray source. It is estimated that the luminosity ratioL x/Lvof this system is about 10−3.8 indicating that TZ Bootis is in the transition region between A- and W-type W UMa systems.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00653484
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  • 8
    Electronic Resource
    Electronic Resource
    Preparation of medium for large-scale hybridoma culture (1983)
    Springer
    Methods in cell science 8 (1983), S. 141-145 
    Details
    ISSN: 1573-0603
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Procedures for preparing 400-liter lots of medium for culturing hybridoma cells are detailed. Modifications to Williams essential basal medium are listed and the effectiveness of the medium for culturing hybridoma cells for antibody production is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01665876
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  • 9
    Electronic Resource
    Electronic Resource
    Oxalosis associated with an Aspergillus niger fungus ball. Report of a case (1981)
    Springer
    Mycopathologia 73 (1981), S. 29-31 
    Details
    ISSN: 1573-0832
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract During a seventeen day period an A. niger fungus ball evolved within a healed tuberculous cavity of a patient. Symptoms were a cough with a chocolate brown expectoration and dyspnea. The patient died and necropsy was performed. Crystals of calcium oxalate were deposited in the cavity lining and in the adjacent tissue of the lung. Fibrosis, mononuclear infiltration and intraalveolar purulent exudate were seen in these tissues. Some small vessels presented recent thrombosis and deposition of calcium oxalate. The bronchus connected with the cavity presented a disrupted epithelial layer, edema, polymorphonuclear infiltration and birefringent crystals. Scattered areas of tubular atrophy, glomerular sclerosis and lymphoid infiltration were seen in the cortex of the kidney. Oxalate crystals were also seen within the renal tubuli.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00443010
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  • 10
    Electronic Resource
    Electronic Resource
    Solar rotation and activity in the past and their possible influence upon the evolution of life (1981)
    Springer
    Earth, moon and planets 24 (1981), S. 399-405 
    Details
    ISSN: 1573-0794
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract It is proposed that the rotational angular momentum of the lower Main Sequence stars determines the intensity of their magnetic spot activity. As a consequence of this feedback coupling, the stellar rotation and the activity decay exponentially by magnetic braking of the induced stellar flare- and wind-activity. Therefore, the Sun should have rotated much faster and must have shown a very enhanced activity in its early history. This strong solar activity in the past could have had influenced the evolution of terrestrial life, and may explain the stagnation of maritime life for about 2×109 yr, the diversification of species during the Cambrian formation, and the land conquest by life in the upper Silurian system.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00896905
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