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  • ASTROPHYSICS  (8)
  • Condensed Matter: Electronic Properties, etc.  (3)
  • Analytical Chemistry and Spectroscopy  (2)
  • DDR  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Quantitative analysis of ethylenediamine in plasma by capillary column gas chromatography (1986)
    Weinheim : Wiley-Blackwell
    Journal of High Resolution Chromatography 9 (1986), S. 548-554 
    Details
    ISSN: 0935-6304
    Keywords: Gas liquid chromatography (GLC) ; Fused silica capillary columns ; Alkali flame ionization detection (AFID) ; Mass spectrometry (MS) ; Quantitation in human serum ; Ethylenediamine ; Aminophylline ; Small molecular weight amines and diamines ; m-Toluoyl derivatives ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A specific and sensitive method for the determination of ethylenediamine in human plasma is described. The aqueous sample is treated with m-toluoyl chloride, yielding the N,N′-bis(m-toluoyl) derivative of the diamine, which is extracted into dichloromethane and quantitated after “on column” methylation by capillary gas liquid chromatography with alkali flame ionization detection. The corresponding derivative of putrescine serves as internal standard. The assay is reproducible and calibration curves are linear over the concentration range 0.05 to 10 μg · ml-1. The lower detection limit is about 10 ng · ml-1. The structures of the compounds of interest eluting from the capillary column are examined by gas liquid chromatography/mass spectrometry. The assay has been applied to the analysis of ethylenediamine in plasma following the administration of aminophylline and ethylenediamine in a cross-over study to patients with bronchopulmonary diseases. The method also proves suitable for measuring other primary and secondary amines and diamines in aqueous solutions by gas liquid chromatography.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jhrc.1240091002
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Infrared and Raman studies on calcium, zinc and cadmium hydroxide halides Ca{O(H,D)}Cl, Cd{O(H,D)}Cl, Zn{O(H,D)}F and β-Zn{O(H,D)}ClContribution LXXIX in a series of papers on lattice vibration spectra. For Part LXXVIII, see K. Beckenkamp, H. D. Lutz, H. Jacobs and U. Metzner, J. Solid State Chem. in press. (1993)
    Chichester [u.a.] : Wiley-Blackwell
    Journal of Raman Spectroscopy 24 (1993), S. 797-804 
    Details
    ISSN: 0377-0486
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: IR and Raman spectra of Zn(OH)F, β-Zn(OH)Cl and isostructural Ca(OH)Cl and Cd(OH)Cl and of deuterated specimens recorded at ambient and liquid nitrogen temperature are presented and assigned to OH(OD) stretching, librational and translational modes. The spectra obtained are discussed on the basis of the layered crystal structures of these hydroxide halides. The main results are (i) detection and proof of the presence of very weak hydrogen bonds in the case of M(OH)Cl (M = Ca, Cd) and for OH(2) of Zn(OH)F [in addition to ordinary hydrogen bonds in the case of β-Zn(OH)Cl and OH(1) of Zn(OH)F] with OH stretching wavenumbers of the corresponding hydroxide ions partially greater than that of free, gaseous OH- ions, (ii) a less symmetrical structure of Ca(OH)Cl and Cd(OH)Cl compared with that obtained from the heavy atoms alone and (iii) proof of the presence of two different kinds of hydroxide ions in nearly equal amounts in Zn(OH)F containing two lattice sites each occupied by F- and OH-. The high-energy shift of the OH modes mentioned above is attributed to the synergetic effect.
    Additional Material: 11 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jrs.1250241113
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    Paper (German National Licenses)
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  • 3
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    Der Einfluß der Temperatur auf Beginn und Verlauf des Apfelwicklerfluges (1956)
    In:  Arch. Gartenbau 4, Heft 4; p.277-278
    Details
    Publication Date: 1956
    Description: Auf der Basis von Messungen mit Apfelwicklerkontrollkästen wurden unter anderem anhand von Korrelationsanalysen der Einfluß der Temperatur auf das Schlüpfen des Apfelwicklers, sowie den Apfelwicklerflug untersucht. Als Ergebnis wird unter anderem eine Temperatursummenregel präsentiert. KATASTER-BESCHREIBUNG: Temperatursummenregel für den Massenflug der ersten Apfelwicklergeneration im Jahr. KATASTER-DETAIL: Mit dem Beginn des Massenfluges der ersten Generation ist zu rechnen, wenn ab einer Temperatursumme von 283°C (Basis 6°C) ab Huflattichblüte bzw. 136°C (Basis 8°C) ab Stachelbeerblüte niederschlags- und windarme Tage mit Tagesmitteltemperaturen 〉=15°C auftreten.
    Keywords: DDR ; 1953-1955 ; Apfel ; Pflanzenschädling ; Obst
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    BIBLIOGRAPHY INKA BB
  • 4
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    Der Einfluß der Temperatur auf Schlüpfzeitpunkt und Flugaktivität des Apfelwicklers (Carpocapsa pomonella L.) (1958)
    In:  Arch. Gartenbau 6, Heft 1; p.12-22
    Details
    Publication Date: 1958
    Description: Der Autor versucht den Massenflug der 1.Generation des Apfelwicklers und das Maximum des Apfelwicklerfluges weiterer Generationen durch eine Temperatursummenregel zu erklären. Hierbei wurden gute Ergebnisse erzielt. KATASTER-BESCHREIBUNG: Aufstellung einer Temperatursummenregel, durch die ein Termin ermittelt werden kann, ab dem, bei Eintreten weiterer Bedingungen, mit dem Massenflug der 1.Apfelwicklergeneration gerechnet werden muss KATASTER-DETAIL: Beginn des Massenfluges -〉 wenn ab Temperatursumme 283°C (Basis 6°C) ab Huflattichblüte bzw. Temperatursumme 136°C (Basis 8°C) ab Stachelbeerblüte relativ warme, nds.- und windschwache Tage mit Tagesmitteltemperaturen 〉 15°C auftreten (wobei mind. 12-14h 〉 15°C und 6-8h 〉 20°C herrschen müssen); Für weitere Apfelwicklergenerationen sind Perioden mit relativ warmen, nds.- und windschwachen Tage mit Tagesmitteltemperaturen 〉 15°C (wobei mind. 12-14h 〉 15°C und 6-8h 〉 20°C herrschen müssen) wichtig
    Keywords: DDR ; 1950-1955
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    BIBLIOGRAPHY INKA BB
  • 5
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    Singlet-Triplet Excitations and Long-Range Entanglement in the Spin-Orbital Liquid Candidate FeSc_{2}S_{4} (2015)
    American Physical Society (APS)
    Details
    Publication Date: 2015-05-27
    Description: Author(s): N. J. Laurita, J. Deisenhofer, LiDong Pan, C. M. Morris, M. Schmidt, M. Johnsson, V. Tsurkan, A. Loidl, and N. P. Armitage Theoretical models of the spin-orbital liquid (SOL) FeSc 2 S 4 have predicted it to be in close proximity to a quantum critical point separating a spin-orbital liquid phase from a long-range ordered magnetic phase. Here, we examine the magnetic excitations of FeSc 2 S 4 through time-domain terahertz spect... [Phys. Rev. Lett. 114, 207201] Published Fri May 22, 2015
    Keywords: Condensed Matter: Electronic Properties, etc.
    Print ISSN: 0031-9007
    Electronic ISSN: 1079-7114
    Topics: Physics
    Published by American Physical Society (APS)
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    PAPER CURRENT
  • 6
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    Role of Spin-Flip Exchange Scattering for Hot-Electron Lifetimes in Cobalt (2011)
    American Physical Society (APS)
    Details
    Publication Date: 2011-07-06
    Description: Author(s): A. Goris, K. M. Döbrich, I. Panzer, A. B. Schmidt, M. Donath, and M. Weinelt The spin-dependent lifetimes of hot electrons in fcc Co films were studied by spin- and time-resolved two-photon photoemission. Even for excitation energies close to the Fermi level, we find almost identical lifetimes for majority and minority electrons. This result contradicts ab initio theories pr... [Phys. Rev. Lett. 107, 026601] Published Tue Jul 05, 2011
    Keywords: Condensed Matter: Electronic Properties, etc.
    Print ISSN: 0031-9007
    Electronic ISSN: 1079-7114
    Topics: Physics
    Published by American Physical Society (APS)
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  • 7
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    Photon-Number-Resolved Measurement of an Exciton-Polariton Condensate (2018)
    American Physical Society (APS)
    Details
    Publication Date: 2018-07-26
    Description: Author(s): M. Klaas, E. Schlottmann, H. Flayac, F. P. Laussy, F. Gericke, M. Schmidt, M. v. Helversen, J. Beyer, S. Brodbeck, H. Suchomel, S. Höfling, S. Reitzenstein, and C. Schneider By counting the photons emitted from a microcavity, researchers shed light on the nature of an exotic condensate of quasiparticles contained in the cavity. [Phys. Rev. Lett. 121, 047401] Published Wed Jul 25, 2018
    Keywords: Condensed Matter: Electronic Properties, etc.
    Print ISSN: 0031-9007
    Electronic ISSN: 1079-7114
    Topics: Physics
    Published by American Physical Society (APS)
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  • 8
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    The galactic spheroid (1983)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Analytic approximations and numerical simulations are used to derive the characteristic behavior of star counts in a galactic spheroidal population, whose visible stars' stellar luminosity function is obtainable for galactocentric distances between about 4 and 12 kpc from star count observations above 30 deg galactic latitude. The total densities of stars and of mass in the spheroid at the solar position are evaluated using different assumed luminosity functions, in order to extrapolate the measured values to a wider range of absolute magnitudes. The upper limits to the frequency of intermediate population stars are derived for the absolute visual magnitude range of 5-8. If such stars occur in either a flat disk with a scale height of 3 kpc or a spheroid with an ellipticity of 0.5, their local surface density is less than 1.8 times that of the spheroid.
    Keywords: ASTROPHYSICS
    Type: Astrophysical Journal; vol. 265
    Format: text
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    NASA TECHNICAL REPORTS
  • 9
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    Observations of quasars with the International Ultraviolet Explorer satellite (1980)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: The paper deals with the spectra of six quasars, ranging in redshift from 0.23 to 2.04, obtained with the 45-cm telescope mounted on the IUE satellite. The average emission-line intensity ratio for L-alpha to H beta and the detection of higher-order Lyman emission lines in two objects are found to be inconsistent with a simple optically thick recombination model. The Lyman and Balmer line velocity profiles are identical. The emission lines in 3C 351 can be decomposed into sharp and broad components, with the sharp lines consistent with the recombination model.
    Keywords: ASTROPHYSICS
    Type: Astrophysical Journal; vol. 239
    Format: text
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  • 10
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    IUE observations of high-redshift quasars (1984)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Attention is given to the spectral energy distributions of nine high-redshift quasars between 1250 and 10,000 A. The distributions steepen shortward of about 1200 A in all but one object. The steepening's lack of correlation with QSO luminosity suggests that it arises from absorption by intervening material along the line of sight. Reddening may contribute to the steepening of the QSO continua, if dust lies along the line of sight to the continuum source, and is difficult to assess quantitatively. In QSOs with redshift sufficiently high for Lyman-alpha to be observed at high resolution, it is possible to account for the observed continuum steepening by the Lyman continuum absorption corresponding to the narrow Lyman-alpha absorption lines seen.
    Keywords: ASTROPHYSICS
    Type: Astrophysical Journal, Part 1 (ISSN 0004-637X); 281; 76-89
    Format: text
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