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  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 79 (1975), S. 2795-2808 
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of the American Chemical Society 99 (1977), S. 2413-2421 
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Table 1 Transplantation of Abelson virus-induced lymphosarcomas Days from virus No. of primary Frequency of ascites Time for development Times for development of injection to cells injected tumours in recipients of ascites tumours in non-ascites tumours in Primary diagnosis of i.p. x 105 ...
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 287 (1977), S. 0 
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1432-2323
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Dans la chirurgie carotidienne, le succès dépend de la sélection des cas, de l'attention aux détails de l'intervention, d'une protection adéquate du cerveau pendant le clampage de la carotide. Diverses méthodes ont été proposées pour vérifier, pendant le clampage, l'efficacité de la circulation collatérale. Elles sont peu pratiques et n'offrent pas toute garantie de sécurité. Les tentatives d'améliorer la perfusion cérébrale dans les zones cérébrales ischémiées, par hyper-et hypocapnie, se sont révelées inefficaces. Le présent rapport décrit notre expérience d'utilisation de routine d'un shunt intracarotidien au cours des 17 dernières années. Ce type de shunt offre plusieurs avantages: il maintient un débit sanguin cérébral inchangé malgré le clampage; le monitoring cérébral devient inutile; l'opération peut être faite sans précipitation. Si le tube est bien mis en place, il ne lèse pas la paroi artérielle et ne doit pas détacher d'embols. La présence du tube dans la lumière artérielle ne gène pas la mise en évidence des lésions d'athéromatose; elle facilite la suture artérielle et évite les erreurs de technique qui pourraient être responsables de sténoses. Nous avons comparé les résultats de la chirurgie carotidienne dans des séries de malades opérés avec et sans shunt interne. Une revue de la littérature confirme notre impression: le shunt ramène à la normale l'EEG et le débit sanguin cérébral. Le shunt est également utile pour la chirurgie des anévrismes de la carotide interne, des coudures de ce vaisseau, des tumeurs du sinus carotidien et des bypass carotido-sous-claviers.
    Notes: Abstract Safety of carotid artery surgery depends on proper case selection, meticulous surgical technique, and appropriate protection of the brain during carotid artery cross-clamping. Various methods have been devised to determine the adequacy of collateral circulation, none of which has been proven practical and totally reliable. Attempts at increasing cerebral perfusion to the ischemic portion of the brain by induced hypertension, hypercarbia, and hypocarbia have been ineffective. The purpose of this presentation is to report our experience with routine intraluminal shunting in carotid artery surgery during the past 17 years. Advantages of routine shunting include maintenance of regional cerebral blood flow at the preclamping level and the elimination of any need for monitoring and haste during surgery. Insertion of the tube, properly done, does not injure the arterial wall and should not cause embolization. The presence of the tube within the arterial lumen does not interfere with exposure of the atheroma, yet it facilitates repair of the incision and prevents stricture by faulty suturing technique. Results of carotid artery surgery measured by the incidence of stroke are compared between shunted and nonshunted series. A review of the literature confirms our impression that shunting reverses ischemic changes detected by EEG and regional cerebral blood flow determinations. The usefulness of shunting in the surgical management of internal carotid aneurysm, kinked carotid artery, carotid body tumor, and carotid-subclavian bypass graft is also described.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular evolution 6 (1975), S. 149-163 
    ISSN: 1432-1432
    Keywords: Electrophoretic Detectability ; Neutral Mutation Theory ; Evolution ; Mutation Rates
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Routine electrophoretic surveys for genetic variation in natural populations depend primarily upon detecting differences in the net charge carried by a protein. We have calculated the proportion of base substitutions which would yield an electrophoretically detectable mutant protein, and the relative mutation rates among different charge classes, under a variety of simplifying assumptions. These calculations indicate that: (i) only 25 per cent of all single base mutations would lead to a charge change on a protein molecule. (ii) five distinct classes of electrophoretic variants can be generated from a specified protein by single base substitutions. (iii) the relative mutation rates differ markedly among the different charge classes which can be generated by single base substitutions. The estimates of the proportion of electrophoretically detectable mutant proteins and relative mutation rates among charge classes were relatively robust to changes in assumptions concerned with the kind and site of base substitutions and the amino acid composition of the protein.
    Type of Medium: Electronic Resource
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  • 7
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    New York : Periodicals Archive Online (PAO)
    Foreign Affairs. 55:2 (1977:Jan.) 325 
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  • 8
    ISSN: 1432-0827
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Contributions to mineralogy and petrology 57 (1976), S. 49-54 
    ISSN: 1432-0967
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract Partial syntectonic recrystallization has been produced in an experimentally deformed plagioclase (peristerite An4.5). The recrystallized grains are scattered through the strongly deformed matrix and appear to have developed by a nucleation and growth mechanism.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Contributions to mineralogy and petrology 57 (1976), S. 55-69 
    ISSN: 1432-0967
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract Plagioclase in the range An2-An10 in a relatively undeformed Quartz—feldspar pegmatite is compared with similar material in a strongly deformed and recrystallized shear zone. Optical and transmission electron microscope observations and chemical data are discussed in terms of established mechanisms of strain induced recrystallization. Recrystallization occurs by the formation of subgrains from recovery, and their subsequent growth by boundary migration or coalescence by rotation. It is suggested that the recrystallization and grain growth are enhanced by a small increase in the anorthite content. Peristerite formation in the recrystallized grains is associated with the migration of high angle boundaries under upper greenschist facies conditions.
    Type of Medium: Electronic Resource
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