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  • Articles: DFG German National Licenses  (15)
  • 2000-2004  (3)
  • 1985-1989  (9)
  • 1980-1984  (3)
  • 1
    Electronic Resource
    Electronic Resource
    Interleukin-6 as a Fibroblast-derived Stimulator (1989)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 557 (1989), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1989.tb24064.x
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  • 2
    Electronic Resource
    Electronic Resource
    Nanosecond radio bursts from strong plasma turbulence in the Crab pulsar (2003)
    [s.l.] : Macmillian Magazines Ltd.
    Nature 422 (2003), S. 141-143 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The Crab pulsar was discovered by the occasional exceptionally bright radio pulses it emits, subsequently dubbed ‘giant’ pulses. Only two other pulsars are known to emit giant pulses. There is no satisfactory explanation for the occurrence of giant pulses, nor is there a complete ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/nature01477
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  • 3
    Electronic Resource
    Electronic Resource
    Quartz reflectivity and piezoelectricity (1980)
    [S.l.] : International Union of Crystallography (IUCr)
    Acta crystallographica 36 (1980), S. 966-974 
    Details
    ISSN: 1600-5724
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: It has been observed that the reflectivity of the (110) planes of a quartz lamina can be increased by submitting it to a static or alternating electric field. Measurements have been performed on 2.5 and 6 mm thick plates using a curved-crystal spectrometer with DuMond geometry. Photon energies were in the range 50 to 300 keV. Under the proper conditions, the increase in reflectivity is accompanied by negligible loss in resolution. The effects are explained by the occurrence of a quasi-mosaicity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0567739480001994
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  • 4
    Electronic Resource
    Electronic Resource
    Production of charmed hadrons in neutrino proton and antineutrino proton charged current interactions (1987)
    Springer
    The European physical journal 36 (1987), S. 593-601 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Usind data from avp and $$\bar v$$ p experiment with BEBC at CERN, the rates for inclusive production ofD *+,Λ c + andD 0 invp scattering and ofD *− in $$\bar v$$ p scattering are measured. Some examples of the exclusive production ofD *+,Λ c + and∑ c ++ are given. The cross section for the reactionvp→μ − c ++ is estimated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01630596
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  • 5
    Electronic Resource
    Electronic Resource
    Respiratory findings in mail carriers (2000)
    Springer
    International archives of occupational and environmental health 73 (2000), S. 136-143 
    Details
    ISSN: 1432-1246
    Keywords: Key words Mail carriers ; Respiratory symptoms ; Ventilatory capacity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The results of the recording of respiratory symptoms and the measurement of lung function in 136 male postal workers employed as mail carriers were studied. In addition, the prevalence of chronic respiratory symptoms in 87 male nonexposed control workers was also examined. There was a significantly higher prevalence of chronic bronchitis (25.0%) and sinusitis (38.9%) in mail carriers than in control workers (13.8%; P 〈 0.05 and 2.3%; P 〈 0.01). A logistic regression analysis performed on the results of the study of chronic respiratory symptoms of mail carriers indicated a significant (P 〈 0.001) effect of smoking in this cohort, with the exception of occupational asthma. Mail carriers who smoked had a significantly higher prevalence of chronic cough (45.3%), chronic phlegm (39.1%), chronic bronchitis (39.1%) and sinusitis (53.1%) than mail carriers who were nonsmokers (18.1%; 12.5%; 12.5% and 26.4% respectively.) (P 〈 0.01). A high prevalence of acute symptoms developing during the work-shift was recorded, in both smokers and nonsmokers, being highest for upper airway symptoms, headache (50.0%), nasal catarrh (42.6%), and eye irritation (57.4%). The results of tests for average measured ventilatory capacity (as a percentage of predicted capacity) were significantly lower than expected, particularly for maximum flow rates at the last 25% of the vital capacity (FEF25), in both smokers (68.5%) and in nonsmokers (74.2%). A multivariate analysis of lung function parameters indicated a significant effect of employment conditions. The only major identifiable occupational exposure of mail carriers was to ambient air pollution for an average of 6 h per day as well as to adverse meteorological conditions. The measured ambient concentrations of major outdoor pollutants, primarily total suspended particulates, sulfur dioxide (SO2) and black smoke exceeded considerably the recommended Croatian maximum air quality standards over the past 10 years. Our study of mail carriers demonstrated that these workers were subject to respiratory symptoms associated with their smoking habits. Lung function findings suggested that occupational exposures, possibly to atmospheric pollution in combination with adverse meteorological conditions, may have led to lung function impairment in these workers.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004200050019
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  • 6
    Electronic Resource
    Electronic Resource
    Zur Bewertung von Kompakt-Wärmeaustauschern (1980)
    Springer
    Heat and mass transfer 13 (1980), S. 205-215 
    Details
    ISSN: 1432-1181
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Description / Table of Contents: Zusammenfassung Zum Vergleich der Leistungsfähigkeit verschiedener Wärmeaustauscher liegt aus der Literatur eine Reihe von Bewertungskriterien vor. Sie beruhen im wesentlichen auf dem Verhältnis von erzielter Wärmeaustauschleistung zu der dafür erforderlichen hydraulischen Förderleistung. Die Anwendung dieser Kriterien wird beeinträchtigt durch nicht oder unklar formulierte Randbedingungen, die der Bewertung zugrunde liegen. Dies hat zu widersprüchlichen oder quantitativ zweifelhaften Ergebnissen geführt. Hier werden die Randbedingungen verschiedener Bewertungsverfahren gegenübergestellt, wobei die beiden Fragestellungen nach Flächenbedarf bei gleicher Wärme- und Förderleistung sowie Flächenbedarf und Förderleistung bei gleicher Wärmeleistung und Anströmfläche als die wichtigsten angesehen werden. Die erste Frage ist von Glaser bereits beantwortet worden, wird hier jedoch verallgemeinert dargestellt, die zweite Fragestellung ist neu; sie wird mit Hilfe geeigneter Kenngrößen und für einige bekannte Austauschsysteme behandelt.
    Notes: Abstract A number of criteria have been developed which evaluate heat exchangers on the basis of exchange rate and pumping power. Appreciation of these criteria suffers from a poor discussion of the conditions for which the evaluation holds. Consequently there have been contradictory results when different procedures were applied. A thorough discussion of the various boundary conditions reveals that two most important questions for crossflow air-cooled heat exchangers are (i) exchange area requirement at constant heat transfer rate and pumping power and (ii) exchange area and pumping power requirement at constant heat transfer rate and frontal area. The first question can be answered by generalizing the evaluation procedure of Glaser, the second problem is dealt with on the basis of redefined heat transfer and pressure drop characteristics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01433448
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  • 7
    Electronic Resource
    Electronic Resource
    Thermal behaviour of acidic salts of mixed tetravalent metals (1989)
    Springer
    Journal of thermal analysis and calorimetry 35 (1989), S. 1527-1539 
    Details
    ISSN: 1572-8943
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Ergebnisse über Untersuchungen an in Schichten eingelagerten kristallinen Zirkoniumphosphat sind in der Literatur beschrieben. Das Verhalten kristalliner Phosphate, die sowohl Zirkoniumals auch Titanmetallionen enthalten, wurde bis jetzt nicht untersucht. Als Teil dieser Untersuchungen wurde das thermische Verhalten solcher Materialien im Temperaturbereich 25–1000 °C durch simultanes Registrieren der TG-, DTG- und DTA-Kurven näher bestimmt, dessen Ergebnisse hier dargelegt werden.
    Abstract: Резюме Результаты исследов аний интеркалирован ного кристаллического фо сфата циркония описаны в литературе. До настоящего времен и не исследованы кристал лические фосфаты, содержащие иона цирк ония и титана. Неполно представлено термич еское поведение таки х материалов, изученны х совмещенным методо м ТГ, ДТГ и ДТА в температурном и нтервале 25–1000°. Представлены пол ученные данные.
    Notes: Abstract The results of investigations on intercalated crystalline zirconium phosphate are described in the literature. The behaviour of crystalline phosphates containing both zirconium and titanium metal ions has not been investigated previously. Within these investigations, the thermal behaviour of such materials has been studied in the temperature interval 25–1000 °C by simultaneous recording of TG, DTG and DTA curves. The results are presented in this paper.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01912930
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  • 8
    Electronic Resource
    Electronic Resource
    Short-term temporal variation in population structure of two harpacticoid copepods, Zausodes arenicolus and Paradactylopodia brevicornis (1984)
    Springer
    Marine biology 84 (1984), S. 53-63 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Aspects of the population biology of two harpacticoid copepod species [Zausodes arenicolus Wilson and Paradactylopodia brevicornis (Claus)] living in Tampa Bay, Florida, USA, were studied on time scales of hours to days during November 1983. Fluctuations in population agestructure, adult sex-ratio, and proportion of ovigerous females were determined for these two species in a control plot and in an experimental plot defaunated by raking. For both species, immigrants into the defaunated plot differed significantly from conspecifics in the control plot in all characteristics examined. The disturbed plot contained a larger proportion of young juveniles of both species compared to the unmanipulated site after 4 h but not after 8 h. In Z. arenicolus, adult males returned to the experimental plot more quickly than adult females. For both species, rapid and significant changes in population age-structure, adult sex-ratio, and the proportion of adult females with eggs occurred within the control plot. It is suggested that this variation was too large and occurred too rapidly to be accounted for solely by in situ processes in the absence of large-scale immigration and/or emigration of individuals. Potential implications of these results for population studies of harpacticoid copepods and other benthic invertebrates are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00394527
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  • 9
    Electronic Resource
    Electronic Resource
    Experimental test of the PCAC hypothesis in the reactionsv μ p→ μ− pπ+ and $$ \bar v_\mu p \to \mu ^ + p\pi ^ - $$ in theΔ(1232) region (1989)
    Springer
    The European physical journal 43 (1989), S. 527-540 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Data on the reactionsv μ p→ μ− pπ+ and $$ \bar v_\mu p \to \mu ^ + p\pi ^ - $$ in the Δ(1232) region are presented and a test of the PCAC hypothesis, using a modified version of the Adler model, is performed. The analysis is based on 1081 events in the neutrino and on 180 events in the antineutrino reaction, obtained in a bubble chamber experiment with BEBC at CERN. The experimental cross-sections for an invariant hadronic massW〈1.4 GeV and an (anti-)neutrino energyE v L 〉10 GeV are determined to be (0.628±0.059)·10−38 cm2 for the neutrino and (0.168±0.023)·10−38 cm2 for the antineutrino reaction. TheQ 2 andW distributions, the density matrix elements of the Δ resonance, and moments of the pion angular distribution are discussed. The data are found to be in good agreement with the Adler model in theQ 2 region below 1 GeV2. A maximum likelihood fit for the axial massm A in the axial-vector form factor yields a value ofm A =1.31±0.12 GeV. At lowQ 2 the data confirm the PCAC hypothesis and the discrepancy, formerly observed between the experimental and theoretical cross-sections forv μ p→ μ− pπ+ at low momentum transfers (Q 2≲0.2 GeV2), is understood as being due to inadequate pion ‘off-mass-shell’ corrections.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01550930
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    Paper (German National Licenses)
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  • 10
    Electronic Resource
    Electronic Resource
    Production of π0 mesons and charged hadrons in $$\bar v$$ neon and ν neon charged current interactions (1988)
    Springer
    The European physical journal 40 (1988), S. 231-251 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The average multiplicities of charged hadrons and of π+, π− and π0 mesons, produced in $$\bar v$$ Ne and νNe charged current interactions in the forward and backward hemispheres of theW ±-nucleon center of mass system, are studied with data from BEBC. The dependence of the multiplicities on the hadronic mass (W) and on the laboratory rapidity (y Lab) and the energy fraction (z) of the pion is also investigated. Special care is taken to determine the π0 multiplicity accurately. The ratio of average π multiplicities $$\frac{{2\left\langle {n_{\pi ^O } } \right\rangle }}{{[\left\langle {n_{\pi ^ + } } \right\rangle + \left\langle {n_{\pi ^ - } } \right\rangle ]}}$$ is consistent with 1. In the backward hemisphere $$\left\langle {n_{\pi ^O } } \right\rangle $$ is positively correlated with the charged multiplicity. This correlation, as well as differences in multiplicities between $$\mathop v\limits^{( - )} $$ and $$\mathop v\limits^{( - )} $$ , $$\mathop v\limits^{( - )} $$ scattering, is attributed to reinteractions inside the neon nucleus of the hadrons produced in the initial $$\mathop v\limits^{( - )} $$ interaction.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01555886
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