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  • 1
    Electronic Resource
    Electronic Resource
    Nucleic Acids, Purines, and Pyrimidines (1952)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Biochemistry 21 (1952), S. 209-244 
    Details
    ISSN: 0066-4154
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Chemistry and Pharmacology , Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.bi.21.070152.001233
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Kinetics of the Polymerization of Styrene by Friedel–Crafts Catalysts (1951)
    [s.l.] : Nature Publishing Group
    Nature 167 (1951), S. 523-524 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In agreement with the results of Williams on the stannic chloride catalysed reaction, we find that (1) the polystyrene formed is equivalent to the mono-styrene consumed, (2) the polymers formed are of low molecular weight, (3) the overall activation energy appears to be small. On the other hand, ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/167523a0
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  • 3
    Electronic Resource
    Electronic Resource
    Elektroschock und vegetative Integration (1953)
    Springer
    Journal of molecular medicine 31 (1953), S. 314-317 
    Details
    ISSN: 1432-1440
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Zusammenfassung Es wurde bei 43 Schizophrenen und Depressiven die Erregbarkeit eines vegetativen Teilsystems mittels einer pharmakodynamischen Belastungsprobe vor und nach dem Elektroschock bestimmt. Die unmittelbare Krampfwirkung besteht in der Synchronisierung aller vegetativer Teilfunktionen, und zwar in Form einer biphasischen Kippschwingung. Nach Abklingen dieser Standardreaktion pendelt sich das vorher in pathologischer Erregbarkeitslage fixierte pressorische Teilsystem auf eine mittlere Linie ein. Diese mittlere Ausgangslage normaler Erregbarkeit ist Bedingung für eine auf biologische Leistung ausgerichtete vegetative Gesamtschaltung.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01472087
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  • 4
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    Carlo Botta: An Italian Historian of the American Revolution (1951)
    New York, etc. : Periodicals Archive Online (PAO)
    Italica. 28:3 (1951:Sept.) 155 
    Details
    ISSN: 0021-3020
    Topics: Romance Studies
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:3128-1951-028-03-000001
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  • 5
    Electronic Resource
    Electronic Resource
    Studies on the termination of sinus nerve afferents (1977)
    Springer
    Pflügers Archiv 369 (1977), S. 65-73 
    Details
    ISSN: 1432-2013
    Keywords: Carotid sinus nerve ; Primary afferent fibres ; Nucleus of the tractus solitarius ; C-fibres ; Antidromic potentials
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Compound action potentials evoked by electrical stimulation in the brainstem of anaesthetized, paralyzed cats and rabbits were recorded distally in the carotid sinus nerve. The latencies of the components of the responses were indicative of fibres with conduction velocities between 0.5 and 32 m/s. These include both myelinated and unmyelinated fibres. Using histological reconstructions of the ‘responsive sites’, the termination of the primary afferent fibres of the sinus nerve within the medulla was mapped. In both cat and rabbit these responsive sites were restricted to thedorsomedial medulla in the vicinity of the NTS 0–3 mm rostral to the obex. Although in the cat the fast conducting myelinated fibres (conduction velocities 〉12.5 m/s) were discretely localized to the ventrolateral area of the NTS, the slower conducting myelinated and unmyelinated fibres were found more diffusely, spreading into areas dorsal and medial to the NTS. In the rabbit the terminals of all types of fibre were mainly confined to the NTS although some C fibres appeared to be grouped in the juxta-alar region. Responses were never evoked from the medial reticular formation or nucleus ambiguus in either cats or rabbits. The organization of the sinus nerve input to the medulla is discussed in the light of these results.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00580812
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  • 6
    Electronic Resource
    Electronic Resource
    High speed molecular weight distribution (1975)
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 15 (1975), S. 831-833 
    Details
    ISSN: 0032-3888
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: It is now possible to do molecular weight distribution of polymeric material almost as fast as you can put them in solution. μSYRAGEL® has opened a new era in the determination of molecular weight distribution of polymers. With operational efficiencies of 800 plates/min., one can obtain a molecular weight distribution in 15 mins. Combining three of the newest advances in liquid chromatography - solvent delivery, septumless injection, and μSYRAGEL - now makes it possible to use molecular weight distribution as a quality control tool in polymerization and fabrication. The reproducibility of the molecular weight distribution is now good enough that overlays can be done from the raw data. The chromatograms can be used right off the recorder. The reproducibility of the weight average and number average molecular weight is 2-3 percent.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pen.760151203
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  • 7
    Electronic Resource
    Electronic Resource
    The sedimentation and diffusion of sodium polymethacrylate and polymethacrylic acid (1954)
    Hoboken, NJ : Wiley-Blackwell
    Journal of Polymer Science 12 (1954), S. 209-219 
    Details
    ISSN: 0022-3832
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: The sedimentation constants and diffusion coefficients of sodium polymethacrylate and of polymethacrylic acid have been determined at various concentrations of polymer and of added electrolyte and the nature of the charge effects is considered. A ratio y = (molarity of added electrolyte)/(grundmolarity of polymer) is used to obtain S20 at y = ∞ when the polyelectrolyte is assumed to be uncharged. The variation of the effective radius with y is considered not to be due to asymmetry but to the open network nature of the polyelectrolyte coil.The sedimentation constant of unionized polymethacrylic acid is determined and also the variation of sedimentation constant with degree of ionization.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1954.120120117
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  • 8
    Electronic Resource
    Electronic Resource
    Solution viscosity and molecular weight of polystyrene prepared by aluminium chloride catalysis (1952)
    Hoboken, NJ : Wiley-Blackwell
    Journal of Polymer Science 9 (1952), S. 286-288 
    Details
    ISSN: 0022-3832
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1952.120090312
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