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  • 1
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Journal of Chromatography B: Biomedical Sciences and Applications 570 (1991), S. 65-76 
    ISSN: 0378-4347
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Prelimary results of an extended program of coordinated X-ray and optical observations of TT Ari are presented. The object was observed on August 21/22 1985 both in X-rays (EXOSAT) and optical range, about 100 days after the return to the active state. The first detailed simultaneous study of TT Ari in active state indicates the presence of strongly absorbing structure in the system.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Astrophysics and space science 128 (1986), S. 101-109 
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract After general remarks on the diffuse interstellar lines (DIL) the necessity to select the objects under investigation upon astrophysical criteria is stressed. The dependence on galactic longitude of the relative strength of the DIL at λ=4430 Å is given. A possible connection between the strength of DIL originating in stellar aggregates and radiation density is shown and discussed.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Zeitschrift für Lebensmittel-Untersuchung und -Forschung 207 (1998), S. 472-476 
    ISSN: 1431-4630
    Keywords: Key words Heterocyclic aromatic amines ; 2-amino-α-carboline ; DNA adducts ; 32P-postlabelling analysis ; AαC ; MeAαC
    Source: Springer Online Journal Archives 1860-2000
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract  Amino-α-carbolines are food-derived genotoxic heterocyclic aromatic amines (HAAs) that have been shown to be carcinogenic in rodents, to induce preneoplastic foci in rat liver and to be active in a number of genotoxicity tests, inducing gene mutations, DNA strand breaks and cell transformation. 2-Amino-α-carboline (AαC) has been estimated to account for about 20% of the carcinogenic HAAs that are ingested with the diet. Using the tandem cartridge solid-phase extraction procedure we were able to show that in pan-fried poultry the proportion of AαC and its 3-methyl derivative (MeAαC) account for 15% of the HAA fraction. Covalent DNA adducts are considered to be the primary lesions in chemical carcinogenesis. Both AαC and MeAαC have been shown to induce covalent DNA adducts in vitro and in vivo. Formation of DNA adducts was investigated by 32P-postlabelling analysis in vitro in primary rat hepatocytes treated with 10–500 μM AαC or MeAαC. While for MeAαC-derived adducts the highest response was obtained with the nuclease P1 enhancement procedure, AαC adducts were most efficiently detected upon 32P-postlabelling preceded by a cartridge enrichment step. Adduct levels detected were dose dependent but decreased for the higher doses due to cytotoxic effects. We have characterised the major DNA adducts of AαC and MeAαC as deoxyguanosine derivatives with the amino-α-carboline bound via the 2-amino group to the C8 position of guanine.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Archives of toxicology 72 (1998), S. 183-186 
    ISSN: 1432-0738
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Astrophysics and space science 217 (1994), S. 95-96 
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    European archives of oto-rhino-laryngology and head & neck 176 (1960), S. 735-740 
    ISSN: 1434-4726
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Zusammenfassung Untersuchungen über die nervöse Versorgung des Kehlkopfes beim Hunde ergaben: 1. Der Kehlkopf wird von dem R. internus nur sensibel vorsorgt. 2. Der R. externus führt nur Fasern für den M. cricothyreoideus, aber keine Fasern für die innere Kehlkopfmuskulatur. 3. Durch Kontraktion des M. cricothyreoideus wird die Ringknorpelspange an den Schildknorpel herangezogen. 4. Reizung des N. recurrens bewirkt Glottisschluß und durch Kontraktion des M. voalis eine Entfernung der Ringknorpelspange vom Schildknrpel. Die am Tier gewonnenen Untersuchungsergebnisse wurden durch Filmaufnahmen festgehalten.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Weinheim [u.a.] : Wiley-Blackwell
    Materials and Corrosion/Werkstoffe und Korrosion 2 (1951), S. 241-243 
    ISSN: 0947-5117
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Evans-cells in different aeration with oxygenAs it is difficult to adjust in a reproducible manner the current density in oxygen concentration cells  -  this also applies to other concentration cells of an electrone-receiver type  -  those test conditions have been closely examined which must be kept constant in order to enable a reproducible work.Though the quantity of oxygen dissolved in the electrolyte is in all degrees of aeration equally high, the current density varied very much. It was found that the cause of this fact is a stirring effect caused by the aeration. In the moved electrolyte more oxygen reacts electrothemically at the cathode than in the static electrolyte.
    Notes: Da die Stromdichte in Sauerstoffkonzentrationselementen (das gilt auch für andere Elektronennehmer-Konzentrationselemente) schwer reproduzierbar einzustellen ist, wurden jene Versuchsbedingungen näher untersucht, die konstant gehalten werden müssen, damit ein reproduzierbares Arbeiten möglich ist.Obwohl die Menge des im Elektrolyten gelosten Sauerstoffes bei allen Begasungsstärken gleich hoch ist, waren die Stromdichten sehr unterschiedlich. Als Ursache dafür wurde ein durch die Begasung hervorgerufener Rühreffekt erkannt. In dem bewegten Elektrolyten wird mehr Sauerstoff an der Kathode elektrochemisch umgesetzt als im ruhenden Elektrolyten.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
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