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  • 1
    Electronic Resource
    Electronic Resource
    Measurement and analysis of the reactionγγ→3π +3π - (1991)
    Springer
    The European physical journal 51 (1991), S. 531-540 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The reactionγγ→3π +3π - has been studied usig the JADE detector at PETRA. The topological cross sectionσ(γγ→3π +3π -) was measured in the CM energy range 1.5–5.5 GeV. The production ofρ 0,s was observed and the average number ofρ 0,s per event measured. The contributions of the subprocessesγγ→ρ 02π +2π -,γγ→ρ 0 ρ 0 π +2π - andγγ→ 3π +3π - (phase space) were studied and 95% C.L. upper limits for the cross sectionσ(γγ→ρ 0 ρ 0 π + π - determined. Finally the Bose-Einstein correlation for pairs of like signed pions was observed. A fit to a standard parametrization gave results consistent with other studies of this effect in pion systems.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01565577
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  • 2
    Electronic Resource
    Electronic Resource
    Reexamination of the thermolytic rearrangement of 4-halophenyl azides to 2-aminophenols and other products (1993)
    Springer
    Monatshefte für Chemie 124 (1993), S. 367-379 
    Details
    ISSN: 1434-4475
    Keywords: Acetylated-2-amino-5-halophenols ; 2-Acetamido-5-haloanisoles ; 6-Halo-2-methylbenzoxazoles ; 6-Halobenzoxazolones ; 6-Halotriacetylaminophenols ; 1H-NMR spectra ; Fungicidal activity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Es wurde die Halogenierung von 2-Aminophenol-Derivaten mit N-Chlor- und N-Bromsuccinimid bei Raumtemperatur in Essigsäure untersucht. Mit den zur Verfügung stehenden Verbindungen konnte eine Neuuntersuchung der thermolytischen Umlagerung von 4-Halogenphenylaziden zu 2-Aminophenolen und anderen Produkten unternommen werden. Diese Umlagerung findet sicherlich statt, allerdings differieren die dabei beobachteten Produkte signifikant von denen, die Suschitzky et al. 1963 und 1966 beschrieben.
    Notes: Summary The halogenation of derivatives of 2-aminophenol with N-chloro- and N-bromosuccinimides at ambient temperatures in acetic acid was studied. With the necessary compounds available, a reexamination of the thermolytic rearrangement of 2-halophenyl azides to 2-aminophenols and other products was undertaken. It is certain that the rearrangement of 4-halophenyl azides to 2-aminophenols occurs but the products identified in this study differ significantly from those reported previously by Suschitzky et al. (1963, 1966).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00814133
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  • 3
    Electronic Resource
    Electronic Resource
    Antifungal activity of halophenols and halonitrophenols (1995)
    Springer
    Monatshefte für Chemie 126 (1995), S. 1161-1166 
    Details
    ISSN: 1434-4475
    Keywords: Antifungal activity ; Halophenols ; Halonitrophenols
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung 31 Verbindungen (Phenol; seine 12 möglichen monohalogenierten Derivate; 18 Nitrophenole (2- und 4-Nitrophenole, 4-, 5- und 6-Halogen-2-nitrophenole, 3-Halogen-4-nitrophenole)) wurden gegenüber 6 Pilzstämmen (A. niger, A. oryzae, M. verrucaria, T. viride, M. cirinelloides, T. mentagrophytes) inSabouraud-Nähmedium auf ihre fungizide Aktivität untersucht. Am effizientesten waren dabei 5-Fluor- und 5-lod-2-nitrophenole (Hemmung aller Stämme bei Konzentrationen 〈10 µg/ml). 6-lod-2-nitrophenol war gegen 5 Pilze bei Konzentrationen 〈10 µg/ml und gegenüberM. cirinelloides zwischen 10 und 100 µg/ml aktiv.
    Notes: Summary Thirty one compounds (phenol; its 12 possible monohalo analogues; 18 nitrophenols (2- and 4-nitrophenols, 4-, 5-, and 6-halo-2-nitrophenols, 3-halo-4-nitrophenols)) were tested for antifungal activity against six fungi (A. niger, A. oryzae, M. verrucaria, T. viride, M. cirinelloides, andT. mentagrophytes) inSabouraud dextrose broth. The two most fungitoxic compounds of those studied were 5-fluoro- and 5-iodo-2-nitrophenols which inhibited all the fungi at concentrations under 10 µg/ml. 6-Iodo-2-nitrophenol inhibited five fungi at a concentration below 10 µg/ml andM. cirinelloides at 10–100 µg/ml.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00811385
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  • 4
    Electronic Resource
    Electronic Resource
    Comparison of the particle flow in $$q\bar q\gamma $$ and $$q\bar qg$$ events frome + e − annihilations at PETRA (1988)
    Springer
    The European physical journal 39 (1988), S. 1-6 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The particle flow distributions in the event plane of 3-jet $$(e^ + e^ - \to q\bar qg)$$ and of radiative 2-jet $$(e^ + e^ - \to q\bar q\gamma )$$ events are compared at a centre of mass energy of 35 GeV. The number of particles in the angular region opposite to the gluon in $$q\bar qg$$ events is found to be significantly reduced relative to the number of particles in the region opposite to the hard photon in $$q\bar q\gamma $$ events. This depletion is expected from the “string effect” observed in 3-jet events. It can be explained within the framework of QCD as arising from soft gluon interference.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01560384
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  • 5
    Electronic Resource
    Electronic Resource
    A study of photon production in hadronic events frome + e − annihilation (1990)
    Springer
    The European physical journal 46 (1990), S. 1-7 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Results are presented on an investigation of photons produced in multihadronic final states frome + e − annihilation at 35 GeV and 44 GeV center of mass energies. Scalling violation between 14 and 44 GeV is observed in inclusive photon spectra. Comparing inclusive π0 spectra with charged pion spectra it is found that the average π0 multiplicity exceeds the charged pion multiplicity scaled by factor of 0.5 by (16±5)% and (21±7)% at 35 and 44 GeV respectively. The excess can be attributed to isospin violating decays of hadrons. The η multiplicity is found to be 〈n η〈=0.64±0.09±0.06 at 35 GeV. With a significance of three standard deviations a signal from quark bremsstrahlung is observed. The measured charge asymmetry in hadronic final states, due to the interference between initial and final state radiation, ofA=−0.141±0.041 is in accord with QED expectations. An interference effect in the azimuth angle distribution of charged jets around the photon direction is observed for the first time.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02440827
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  • 6
    Electronic Resource
    Electronic Resource
    A comparison of measured jet cross sections with QCD calculations fore + e − annihilation (1991)
    Springer
    The European physical journal 49 (1991), S. 29-41 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The cross sections for 2-, 3- and 4-jet production have been determined with the JADE detector, sited on thee + e −-storage ring PETRA. Data at $$\sqrt s = 14$$ , 22, 35 and 44 GeV were compared to twoO(α s 2 ) QCD calculations. A first analysis was performed with uncorrected data using theO(α s 2 ) 3-jet matrix element calculation of Ellis, Ross and Terrano and the Lund String Monte Carlo program. In a second analysis the calculation of Kramer and Lampe was compared to corrected data. Both approaches gave a poor description of the data when the square of the momentum transferQ 2=s was used as the scale of the running coupling constant. The description improved when the renormalization scale was adjusted to the process studied. The data ware used to fix the best renormalization scale.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01570794
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  • 7
    Electronic Resource
    Electronic Resource
    Effect of prior splenectomy on the growth of Sarcoma 180 in normal and Bacillus Calmette-Guérin infected mice (1962)
    Springer
    Cellular and molecular life sciences 18 (1962), S. 335-336 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Zusammenfassung Die Regression des Sarkomas 180 in Albinomäusen wurde durch vorangehende Splenektomie gefördert. Die gegen Sarkoma 180 erhöhte Resistenz von Mäusen, die mit B.C.G. infiziert worden waren, wird durch die Abwesenheit der Milz nicht beeinflusst.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02151865
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  • 8
    Electronic Resource
    Electronic Resource
    Preparation and fungitoxicity of 3-bromo-6-chloro- and 6-bromo-3-chloro-8-quinolinols (1996)
    Springer
    Monatshefte für Chemie 127 (1996), S. 331-337 
    Details
    ISSN: 1434-4475
    Keywords: 3-Bromo-6-chloro-8-quinolinol ; 6-Bromo-3-chloro-8-quinolinol ; 3-Bromo-6,8-dihydroxy-quinoline ; 3-Chloro-6,8-dihydroxyquinoline ; Fungitoxicity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung 3-Brom-6-chlor- und 6-Brom-3-chlor-8-nitro-, -8-amino- und -8-hydroxychinoline sowie 3-Brom- und 3-Chlorchinolin-6,8-diole wurden hergestellt und gegen sechs Pilzstämme (Aspergillus niger, A. oryzae, Myrothecium verrucaria, Trichoderma viride, Mucor cirinelloides, Trichophyton mentagrophytes) inSabouraud-Dextrosenährmedium auf lhre fungizide Aktivität untersucht. Verbindungen mit Chlor in Position 3 sind durchwegs fungitoxischer als die entsprechenden Bromanalogen. 6-Brom-3-chlor-8-chinolinol hemmt das Wachstum von vier Pilzen bei Konzentrationen unter 1 µg/ml und das vonA. niger undM. cirinelloides bei einer Konzentration von jeweils 2 µg/ml.
    Notes: Summary 3-Bromo-6-chloro- and 6-bromo-3-chloro-8-nitro, -8-amino-, and -8-hydroxyquinolines along with 3-bromo- and 3-chloroquinolin-6,8-diols were prepared and tested for antifungal activity against six fungi (Aspergillus niger, A. oryzae, Myrothecium verrucaria, Trichoderma viride, Mucor cirinelloides, Trichophyton mentagrophytes) inSabouraud dextrose broth. Compounds with chlorine in the 3 position were generally more fungitoxic than the corresponding analogues with bromine. 6-Bromo-3-chloro-8-quinolinol inhibited four fungi at levels below 1 µg/ml andA. niger andM. cirinelloides at 2 µg/ml each.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00813800
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  • 9
    Electronic Resource
    Electronic Resource
    Preparation and fungitoxicity of 3,6-dichloro-and 3,6-dibromo-8-quinolinols (1994)
    Springer
    Monatshefte für Chemie 125 (1994), S. 723-730 
    Details
    ISSN: 1434-4475
    Keywords: 3,6-dichloro-8-nitroquinoline ; 3,6-dibromo-8-nitroquinoline ; 8-amino-3,6-dichloroquinoline ; 8-amino-3,6-dibromoquinoline ; 3,6-dichloro-8-quinolinol ; 3,6-dibromo-8-quinolinol ; 1H NMR spectra
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung 3,6-Dichlor- und 3,6-Dibrom-8-chinoline wurden durch direkte Halogenierung von 8-Nitrochinolin mit N-Halogensuccinimid in Essigsäure oder durch Halogenierung der entsprechenden nachSkraup synthetisierten 6-Halogen-8-nitrochinoline hergestellt. Die Nitrogruppe wurde zum Amin reduziert und die Aminofunktion in 70% iger Schwefelsäure bei 220°C zum Phenol hydrolysiert. Die Fungitoxizität der 3,6-Dichlor- und 3,6-Dibrom-8-chinoline und jene der bei ihrer Herstellung auftretenden Zwischenstufen gegenAspergillus niger, Aspergillus oryzae, Myrothecium verrucaria, Trichoderma viride undMucor cirinelloides wurde bestimmt. 3,6-Dichlor-8-chinolin ist der derzeit stärkste bekannte fungitoxische Vertreter dieser Substanzklasse.
    Notes: Summary 3,6-Dichloro- and 3,6-dibromo-8-quinolinols were prepared by direct halogenation of 8-nitroquinoline by N-halosuccinimide in acetic acid or by halogenation of the corresponding 6-halo-8-nitroquinoline prepared via aSkraup reaction. The nitro group was reduced to amino and the amine was hydrolyzed to the phenol in 70% sulfuric acid at 220°C. The fungitoxicity of 3,6-dichloro- and 3,6-dibromo-8-quinolinols, as well as intermediates in their preparation, againstAspergillus niger, Aspergillus oryzae, Myrothecium verrucaria, Trichoderma viride, andMucor cirinelloides was determined. 3,6-dichloro-8-quinolinol is the most fungitoxic analogue of this class of compounds observed to date.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01277632
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  • 10
    Electronic Resource
    Electronic Resource
    The captive rearing of threatened Orthoptera: a comparison of the conservation potential and practical considerations of two species' breeding programmes at the Zoological Society of London (1998)
    Springer
    Journal of insect conservation 2 (1998), S. 201-210 
    Details
    ISSN: 1572-9753
    Keywords: conservation ; captive breeding ; reintroduction ; Gryllus campestris ; Decticus verrucivorus.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Nature of Science, Research, Systems of Higher Education, Museum Science
    Notes: Abstract The development of ex situ conservation work for Orthoptera is demonstrated by examples of two captive-breeding programmes at the Zoological Society of London. The field cricket Gryllus campestris and wart-biter bush cricket Decticus verrucivorus are both species that have been bred in captivity and reintroduced to field sites in attempts to strengthen dwindling wild populations. Despite a similar approach to both programmes, we have encountered significant differences in the practical applications of the captive management process for the two species. By reviewing these breeding programmes, we examine some of the practical considerations associated with ex situ orthopteran programmes and compare some of the different elements that can influence programme success.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1009643729536
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