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  • 1
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    New York : Periodicals Archive Online (PAO)
    American Journal of Community Psychology. 13:4 (1985:Aug.) 393 
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  • 2
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 196 (1962), S. 699-700 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Fig. 1. Hesults of preliminary experiment on one animal. Crosses show the number of lever presses to extinction in successive 30-sec periods of normal extinction. Circles represent the number of lever presses in 30 sec of extinction during which a low intensity of repetitive stimulation was given, ...
    Type of Medium: Electronic Resource
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  • 3
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    London : Periodicals Archive Online (PAO)
    The Contemporary Review. 215:1246 (1969:Nov.) 253 
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  • 4
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Journal of Molecular Spectroscopy 130 (1988), S. 264-266 
    ISSN: 0022-2852
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Tetrahedron Letters 7 (1966), S. 1849-1855 
    ISSN: 0040-4039
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Annals of hematology 32 (1976), S. 389-392 
    ISSN: 1432-0584
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    European journal of nuclear medicine 24 (1997), S. 1433-1440 
    ISSN: 1619-7089
    Keywords: Key words: Placebo ; Pain ; Radionuclide therapy ; Nuclear medicine ; Radiopharmaceuticals
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. The placebo effect will have a growing importance in the field of nuclear medicine as the potentials for palliative therapy with internal sources are realized. It is important for nuclear medicine physicians and their colleagues to be familiar with the role of placebo responses in clinical trials, especially when such trials involve the subjective assessment of pain. A summary of the literature on the placebo effect in pain studies is presented in which traditional values for placebo responses are contrasted with more current thinking in the field. The few published double-blind studies of pain relief after treatment with radiotherapeutic agents are summarized specifically with respect to their cited placebo response.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    European journal of nuclear medicine 20 (1993), S. 1113-1127 
    ISSN: 1619-7089
    Keywords: Radiation synovectomy ; Rheumatoid arthritiswRadiotherapy ; Hydroxylapatite ; Samarium-153
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Radiation synovectomy is a potential weapon in the therapeutic armamentarium of nuclear medicine. It is an attractive alternative to surgical or chemical synovectomy for the treatment of rheumatoid arthritis. In this article the clinical results obtained with radiation synovectomy from the 1950s through 1992 are summarized and reviewed. Even after taking into account the paucity of well-controlled trials and rigorous clinical follow-up, it is clear that radiation synovectomy is efficacious in controlling the symptoms of rheumatoid arthritis. However, the procedure is not widely used because of concerns about leakage of radioactivity from the treated joint, and the resulting high doses that can be delivered to nontarget organs. New approaches to the preparation of radiolabeled particles for use in radiation synovectomy promise to minimize this leakage and thus allow the full potential of this important radiotherapy to be realized.
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 0018-019X
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The kinetics of pyridine exchange on trans-[MO2(py)4]+ have been followed by 1H-NMR in CD3NO2 for M = Re, Tc: k298S-1 = (5.5 ± 0.1) × 10-6, 0.04 ± 0.02; ΔH≠/kJmol-1 = 111 ± 3, 101 ± 9; ΔS≠/JK-1mol-1 = +28 ± 10, +68 ± 35. For the Rev complex, pyridine and oxygen exchanges have been measured simultaneously by 1H- and 17O-NMR in deuterated water: k298/s-1 = (8.6 ± 0.2) × 10-6 (py), (14.5 ± 0.3) × 10-6 (oxygen); ΔH≠/kJmol-1 = 111 ± 1, 91 ± 1; ΔS /JK-1mol-1 = +32 ± 3, -32 ± 4. For both complexes, the rate law for pyridine exchange is first-order in complex and zero-order in pyridine; together with the activation parameter values, and the fact that the rate does not depend significantly on the nature of the solvent, this strongly implies the operation of a dissociative mechanism. The ratio of pyridine exchange rates for the Tc and Re complexes at room temperature is ca. 8000. The consequences of these observations for radiopharmaceutical synthesis are discussed.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 329 (1987), S. 681-698 
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zwischen der Analytik einerseits und der Verarbeitungstechnologie des Erdöls andererseits besteht eine enge Wechselbeziehung. Insbesondere stellt die zunehmende Bedeutung der hochsiedenden Erdölbestandteile für die Erzeugung von leicht- und mittelsiedenden Produkten wachsende Anforderungen an die Analytik. Als Beitrag dazu soll hier eine UV-spektroskopische Methode zur Bestimmung des Aromatengehaltes sowie der Aromatenstrukturtypenverteilung in hydroraffinierten Erdölprodukten im Siedebereich 433-773 K vorgestellt werden.Grundlage für eine UV-spektroskopische Mehrkomponentenanalyse ist die genaue Kenntnis der Extinktionskoeffizienten, wobei für n-Komponenten mindestens n Meßstellen erforderlich sind, an welchen die Extinktionskoeffizienten der Einzelkomponenten bekannt oder bestimmbar sein müssen. Dieses klassische Verfahren wurde auch bereits für die Aromatenstrukturtypenanalyse von Erdölfraktionen angewandt, z.B. in [1-3]. Bei der Benutzung dieser Arbeiten haben wir allerdings erhebliche Abweichungen zu den Ergebnissen anderer Methoden (1H-NMR-Spektroskopie und Elutions-Adsorptions-Chromatographie) erhalten. Wir führen das darauf zurück, daß die verwendeten Extinktionskoeffizienten die zu analysierenden Strukturtypen ungenügend repräsentieren. Mit der allgemein zur Präparation reiner Strukturtypen eingesetzten Elutions-Adsorptions-Chromatographie ist eine genügend scharfe Trennung der einzelnen Typen bei Einsatz breiter Siedeschnitte auch kaum möglich. Davon ausgehend, wurden eigene Untersuchungen auf der Basis von 20 K-Siedeschnitten durchgeführt, deren Ergebnisse hier mitgeteilt werden sollen.
    Notes: Aromatic Structure Type Analysis of Hydrotreated Petroleum Fractions by U.V.-Spectroscopy20 K boiling cuts were produced from hydrotreated petroleum products by means of distillation. From such close fractions, defined pure aromatic types can be separated by preparative elution adsorption chromatography (EAC) on dual-packed (Silicagel-Alumina gel) columns. The extinction coefficients of the various separated types are measured at suitable wave lengths and used for calculating the average extinction coefficients of aromatic types for wide boiling fractions. Utilizing these values on quantitative u.v.-analysis of technical hydrotreated products, the results correspond well with those of EAC and 1H-n.m.r. spectroscopy.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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