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  • 1
    Electronic Resource
    Electronic Resource
    Studies on the regulation of the branched chain amino acyl-tRNA synthetases of the fungusNeurospora crassa (1980)
    Springer
    Development genes and evolution 189 (1980), S. 171-180 
    Details
    ISSN: 1432-041X
    Keywords: Amino acyl-tRNA synthetases ; Development ; Nuclear-mitochondrial interactions ; Neurospora
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The specific activities of the branched chain amino acyl-tRNA synthetases from the cytosolic and mitochondrial fractions ofN. crassa were low in dormant conidia and increased during germination, reaching a maximum 8 h after inoculation. This stage of development is characterised by high rates of many other cellular activities. The increases in activity of synthetases of both cytosol and mitochondria are inhibited by cycloheximide indicating that they are synthesized on cytoplasmic ribosomes. The mitochondrial synthetases show a stimulation of their specific activity when mitochondrial RNA and protein synthesis are inhibited by either ethidium bromide or chloramphenicol suggesting that a mitochondrial translation product regulates the synthesis of the mitochondrial synthetases. The activities of amino acyl-tRNA synthetases are dependent on energy production. When respiration is uncoupled from oxidative phosphorylation, synthetase specific activities decrease although the activities of other mitochondrial enzymes like NADH-dehydrogenase increase. This phenomenon suggests that more than one mechanism regulates the synthesis of mitochondrial proteins which are formed on cytoplasmic ribosomes. The synthesis of branched chain amino acyl-tRNA synthetases ofNeurospora is neither repressed by their cognate amino acids, nor is there inhibition by the precursors of these amino acids, as has been observed in other amino acyl-tRNA synthetases of various organism includingNeurospora.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00868675
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  • 2
    Electronic Resource
    Electronic Resource
    Morphology and chronology of ischemic mucosal changes in the small intestine (1983)
    Springer
    Journal of molecular medicine 61 (1983), S. 593-599 
    Details
    ISSN: 1432-1440
    Keywords: Small intestine ; Early ischemia ; Electron microscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The morphology and chronology of an absolute ischemia was investigated on the small intestine of man and rat. It could be shown that the morphogenesis of ischemic damage to the intestinal mucosa in man does not differ from that in the rat. However, there are crucial and in therapeutic terms significant differences in the time course of the ischemic damage to the intestinal mucosa. Whereas in the small intestine of the rat, the first appreciable alterations — detachment and disruption of the lining epithelium at the villous tip — are already to be observed after absolute ischemia lasting 15 min, in the human small intestine the same lesions only occur after 4 h. A comparable complete necrosis of the small intestinal mucosa was detected in the rat after 7-h ischemia, and in man after 44-h ischemia.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01487337
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  • 3
    Electronic Resource
    Electronic Resource
    Comparative studies on physiology and taxonomy of obligately purinolytic clostridia (1984)
    Springer
    Archives of microbiology 138 (1984), S. 345-353 
    Details
    ISSN: 1432-072X
    Keywords: Clostridium acidiurici ; Clostridium cylindrosporum ; Clostridium purinolyticum ; Purine metabolism ; Selenite ; Antibiogram ; DNA homology ; Taxonomy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Eleven strains of obligately purinolytic clostridia have been studied with respect to their assignment to the three type strains of Clostridium acidiurici, C. cylindrosporum, and C. purinolyticum. DNA/DNA-hybridization proved to be the method of choice for differentiation whereas phenotypic characteristics such as spore morphology, substrate spectra, nutritional requirements, product formation, and sensitivity against various antibiotics did not allow unequivocal identification. All strains depended on selenite for growth.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00410902
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  • 4
    Electronic Resource
    Electronic Resource
    Optical probes for electrochemical events and for conformational changes in biological membranes (1980)
    Springer
    European biophysics journal 6 (1980), S. 18-19 
    Details
    ISSN: 1432-1017
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00647496
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  • 5
    Electronic Resource
    Electronic Resource
    Ritual As Communication: Order, Meaning, and Secrecy in Melanesian Initiation Rites (1984)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Anthropology 13 (1984), S. 143-155 
    Details
    ISSN: 0084-6570
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Ethnic Sciences , Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.an.13.100184.001043
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  • 6
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    Impartiality and Equity (1980)
    Dordrecht : Periodicals Archive Online (PAO)
    Theory and Decision. 12:1 (1980:Mar.) 61 
    Details
    ISSN: 0040-5833
    Topics: Sociology , Economics
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:n228-1980-012-01-000004
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  • 7
    Electronic Resource
    Electronic Resource
    310. Experimentelle Untersuchung zur funktionellen Anpassung freier Dünndarmtransplantate in der Mundhöhle (1981)
    Springer
    Langenbeck's archives of surgery 355 (1981), S. 651-651 
    Details
    ISSN: 1435-2451
    Keywords: Oropharyngeal replacement ; Microsurgical bowel transfer ; Functional adaptation of free bowel grafts ; Oropharynx Ersatz ; Mikrochirurgischer Darmtransfer ; Funktionelle Adaptation transplantierten Darms
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung An 8 Bastardhunden wurden ausgedehnte oropharyngeale Weichteildefekte durch mikrochirurgisch transplantierte, kontramesenterial eröffnete Dünndarmsegmente gedeckt. Über einen Beobachtungszeitraum von 12 Monaten zeigen unsere klinischen, histologischen, histochemischen und Scannerelektronenoptischen Untersuchungen eine Zunahme der funktionellen Anpassung der Darmschleimhaut mit Abflachung und Verbreiterung der Zotten, Rückgang der Schleimproduktion, Unverletzlichkeit bei mechanischer Belastung und gleichbleibende Konsistenz. Sie dient als adäquate Mundmucosa.
    Notes: Summary In eight mongrel dogs large defects in the cheek, mandible, floor of the mouth, and the tongue were covered with microsurgicatty transplanted bowel segments opened along the antimesenteric border. After transplantation our clinical, histological, histochemical, and scanner-electronoptic findings show for up to 1 year an increasing functional adaptation of the intestinal lining with flattening and widening of the villi, reduction of the mucous production, persisting softness, and invulnerability when under stress mechanically. Free bowel grafts serve as an adequate oral lining.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01287144
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  • 8
    Electronic Resource
    Electronic Resource
    Impartiality and equity (1980)
    Springer
    Theory and decision 12 (1980), S. 61-74 
    Details
    ISSN: 1573-7187
    Source: Springer Online Journal Archives 1860-2000
    Topics: Sociology , Economics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00154658
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  • 9
    Electronic Resource
    Electronic Resource
    Malignant fibrous histiocytoma of the renal capsule (1981)
    Springer
    Journal of cancer research and clinical oncology 100 (1981), S. 285-293 
    Details
    ISSN: 1432-1335
    Keywords: Malignant fibrous histiocytoma ; Renal capsule ; Erythrophago-somes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary We report about an extremely rare case of malignant fibrous histiocytoma (MFH) of the renal capsule. The tumor is composed of fibroblast-like cells arranged in a storiform pattern and histiocyte-like cells with multinucleated giant cells, both showing no iron reaction. Characteristic of the histiocytic quality of the tumor are numerous PAS-positive intracytoplasmic droplets which can be identified as erythrophagosomes only under the electron microscope. Emphasis is put on the preoperative differential diagnosis of the tumor from renal cell carcinoma as well as on its histogenesis and prognosis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00410689
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  • 10
    Electronic Resource
    Electronic Resource
    Microbial conversion of sterols (1982)
    Springer
    Applied microbiology and biotechnology 15 (1982), S. 25-32 
    Details
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract By preselection of microorganisms which preferentially attack the side chain of cholesterol we have been able to isolate a mutant of Corynebacterium spec. Chol 73 which forms 20-carboxy-pregna-1,4-dien-3-one (BNC) from cholesterol in nearly quantitative yields. The structure of this compound has been established by means of13C NMR-,1H NMR and CD spectroscopy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01875396
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