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  • 1975-1979  (25)
  • 1970-1974  (14)
  • 1
    Electronic Resource
    Electronic Resource
    ASSAY AND SUBCELLULAR LOCALIZATION OF THE ARYLSULPHATASES IN RAT BRAIN (1970)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of neurochemistry 17 (1970), S. 0 
    Details
    ISSN: 1471-4159
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: —The properties and subcellular localization of type I (nitrophenyl) and type II (nitrocatechol) arylsulphatases were investigated in brain tissue of the rat, and optimal assay conditions were established. Sulphate, phosphate and sulphite ions inhibited the nitrocatechol sulphatases; nitrophenyl sulphatase was inhibited only by sulphite. The presence of latent enzyme activity was demonstrated for the nitrocatechol sulphatases, beta-glucuronidase, and beta-glycerophosphatase in rat and mouse brain homogenates. These hydrolases were highly sensitive to mechanical and osmotic damage; and Triton X-100 was very effective in releasing their latent (bound) activities, a finding suggestive of a lysosomal localization. Activity of nitrophenyl sulphatase was unaffected by osmotic changes or Triton X-100, characteristics suggesting a membranous association for this enzyme. Total activity of nitrophenyl sulphatase was approximately twice as great in canine gray matter as in canine white matter; the converse obtained for beta-glucuronidase activity. Values for total enzymic activity of the nitrocatechol sulphatases in canine white and gray matter were similar.Fractionation of homogenates from rat brain by differential centrifugations and separation of crude mitochondrial fractions by sucrose density gradient centrifugations revealed the following: (1) most of the nitrocatechol sulphatase activity (93 per cent) and all of the nitrophenyl sulphatase activity were sedimentable; (2) crude mitochondrial fractions exhibited the highest relative specific activity (RSA = 1·38) for the nitrocatechol sulphatases, whereas microsomal fractions displayed the highest RSA for nitrophenyl sulphatase (1·89); (3) the lightest fraction (A + B) and the densest fraction (E) from the sucrose density gradient contained most of the activity for both the type I and type II arylsulphatases, whereas the RSA of cytochrome oxidase was greatest in the intermediate density regions (fractions C and D); (4) the highest RSA for beta-glucuronidase and beta-glycerophosphatase occurred in gradient fraction C; (5) appreciable activity of beta-glycerophosphatase was found in a nerve ending fraction (M3).It is suggested that the hydrolases in heterogeneous tissue like brain might be associated with lysosomal particles of differing enzyme compositions and varying populations, and that the data on distribution lend credence to the concept of bimodal and possible trimodal particle affinity for the hydrolases of brain tissues.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1471-4159.1970.tb02240.x
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    ROLE ENACTMENT AS A SOCIALLY RELEVANT EXPLANATION OF SELF-PERSUASION (1979)
    Oxford, UK : Blackwell Publishing Ltd
    Human communication research 5 (1979), S. 0 
    Details
    ISSN: 1468-2958
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Media Resources and Communication Sciences, Journalism
    Notes: This paper reports four tests of Berger's role enactment model of persuasion. The model is addressed to generalizing counter attitudinal communication to social situations when persons find themselves encoding belief-discrepant messages. This encoding takes the form of role enactments which lead to attitude change. Crucial to predicting from the model are variables identifying the communicator's self-perceived role enactment competence (SPREC), post performance evaluation (PPE), information, and role involvement. Studies 1 and 2 found no support for predictions concerning the predictive utility of information but did point to the importance of SPREC and PPE in assessing post enactment attitude. Study 3 tested a re-conceptualization of Berger's model and confirmed a multivariate relationship among SPREC, PPE, message intensity, and attitude change. In Study 4 ego involvement was conceptually linked to role involvement, and results confirmed the SPREC, PPE, involvement, message intensity, and attitude change relationship.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1468-2958.1979.tb00634.x
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    THE EFFECT OF INTERACTION BEHAVIOR ON SOURCE CREDIBILITY, HOMOPHILY, AND INTERPERSONAL ATTRACTION (1974)
    Oxford, UK : Blackwell Publishing Ltd
    Human communication research 1 (1974), S. 0 
    Details
    ISSN: 1468-2958
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Media Resources and Communication Sciences, Journalism
    Notes: This study investigated the relationship between interaction behavior in a small group setting and the resulting perceptions group members have of one another. Trained raters coded the interaction behavior of subjects, who discussed a task-oriented topic in small groups. Results indicate that interaction behavior can account for a substantial percentage of the variance in group members’ perceptions of one another. Apparently, the same interaction behavior may simultaneously result in both more positive and more negative perceptions on the part of other group members, suggesting that different interaction strategies are appropriate for varying desired personal outcomes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1468-2958.1974.tb00252.x
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Cytoplasmic Streaming in Amoeboid Movement (1978)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Biophysics and Biomolecular Structure 7 (1978), S. 469-495 
    Details
    ISSN: 0084-6589
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.bb.07.060178.002345
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  • 5
    Electronic Resource
    Electronic Resource
    Cytoplasmic Streaming in Green Plants (1978)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Biophysics and Biomolecular Structure 7 (1978), S. 497-526 
    Details
    ISSN: 0084-6589
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.bb.07.060178.002433
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Turnover of lymphocytes in rat peritoneal fluid (1970)
    Springer
    Cellular and molecular life sciences 26 (1970), S. 652-653 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Zusammenfassung Zellkinetische Untersuchungen an Ratten nach Injektion von H3-Thymidin ergaben eine rasche Markierung der grossen mononukleären Zellen innerhalb von 20 Min und eine langsaniere Markierung der kleinen Lymphozyten, für welche eine Turnover-Zeit von 23,4 Tagen errechnet wurde. Stündlich gelangen ca. 105 kleine Lymphozyten in die Bauchhöhlenflüssigkeit.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01898744
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    Paper (German National Licenses)
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  • 7
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    ROLE ENACTMENT AS A SOCIALLY RELEVANT EXPLANATION OF SELF-PERSUASION (1979)
    Oxford : Periodicals Archive Online (PAO)
    Human communication research. 5:3 (1979:Spring) 203 
    Details
    ISSN: 0360-3989
    Topics: Media Resources and Communication Sciences, Journalism
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:p329-1979-005-03-000002
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  • 8
    Electronic Resource
    Electronic Resource
    Acid hydrolase and cytochrome oxidase activities in nitrosourea induced tumors of the nervous system (1977)
    Springer
    Acta neuropathologica 39 (1977), S. 13-23 
    Details
    ISSN: 1432-0533
    Keywords: Nitrosourea ; Glioma ; Schwannoma ; Hydrolases ; Oxidase
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Nitrosourea induced tumors of the nervous system in rats have proven useful for biochemical studies combined with morphological approaches. The pattern of enzyme activities for acid hydrolases and cytochrome oxidase resemble those previously observed in spontaneous nervous system tumors of man. The activities of 4 acid hydrolases were generally high in the gliomas. This could not be attributed solely to zones of regression or necrosis but was a general characteristic of the neoplasms. The activities were predominantly particulate and most likely lysosomal in localization. In schwannomas a similar increase in hydrolases was found in comparison with normal neural tissues but aryl-sulfatase was not increased. Cytochrome oxidase activities were markedly reduced in all tumors studied. The proportionate reduction with respect to normal brain was comparable to that noted in man. No differences were found with respect to fairly well differentiated gliomas.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00690381
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    Paper (German National Licenses)
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  • 9
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    THE EFFECT OF INTERACTION BEHAVIOR ON SOURCE CREDIBILITY, HOMOPHILY, AND INTERPERSONAL ATTRACTION (1974)
    Oxford : Periodicals Archive Online (PAO)
    Human communication research. 1:1 (1974:Fall) 42 
    Details
    ISSN: 0360-3989
    Topics: Media Resources and Communication Sciences, Journalism
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:p329-1974-001-01-000005
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  • 10
    Electronic Resource
    Electronic Resource
    Photo-yellowing of a phenolic anti-oxidant in the presence of various stabilizer/titanium dioxide pigment combinations in polyethylene (1978)
    Springer
    Journal of materials science 13 (1978), S. 2692-2696 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The effect of various stabilizer and titanium dioxide (rutile) pigment combinations on the photo-yellowing and photo-oxidation of commercial polyethylene containing an antioxidant, 4,4′-thio-bis(6-tert-butyl-meta-cresol) is examined. The nature of various interacting mechanisms is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00552700
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