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  • Articles  (58)
  • Springer  (29)
  • American Institute of Physics  (12)
  • American Society of Hematology  (7)
  • American Physical Society  (6)
  • Blackwell Publishing Ltd  (4)
  • 2005-2009  (20)
  • 1995-1999  (17)
  • 1985-1989  (5)
  • 1975-1979  (12)
  • 1955-1959  (4)
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  • 1
    Electronic Resource
    Electronic Resource
    Risk Assessment and Occupational Health Conceptual Problems (1989)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 572 (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.tb13576.x
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  • 2
    Electronic Resource
    Electronic Resource
    The Decline of Deference: The Political Context of Risk Communication (1989)
    Oxford, UK : Blackwell Publishing Ltd
    Risk analysis 9 (1989), S. 0 
    Details
    ISSN: 1539-6924
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Risk communication is seen as an important adjunct to the process of siting locally noxious facilities. To understand how risk communication might function in such a process, one needs to understand the political context that gives rise to public opposition to such facilities in the first place. This analysis draws on a variety of data to describe the decline of deference, a situation in which a hostile and alienated public is mobilized primarily through ad hoc voluntary organizations, and is increasingly reluctant to defer important decisions to institutional elites. Risk communication programs must be designed to offset the trends that result in the decline of deference. This conclusion differs markedly from the conventional wisdom that risk communication is merely a device for providing information to citizens so sthat they may make more rational decisions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1539-6924.1989.tb01265.x
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  • 3
    Electronic Resource
    Electronic Resource
    Overview of Policy Issues: Panel Report (1979)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 334 (1979), 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.1749-6632.1979.tb53676.x
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  • 4
    Electronic Resource
    Electronic Resource
    Recombinant plasmid DNA mobilization by activated sludge strains grown in fixed-bed or sequenced-batch reactors (1996)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology ecology 21 (1996), S. 0 
    Details
    ISSN: 1574-6941
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Abstract: The possibilities of mobilizing recombinant DNA (rDNA) by strains from activated sludge have been studied. A mixture of ten bacterial strains isolated from activated sludge was grown on a support in a continuously fed fixed-bed reactor or in suspension in a sequenced-batch reactor with biomass recycling. After reaching steady state, the bacteria in both types of reactors were used as the recipient population for evaluating the dissemination of the non-conjugative and non-mobilizable recombinant plasmid pCE328. The dissemination of this plasmid, derived from pBR328 (tra−, mob−, oriT−), was studied in comparison with that of pCE325 (pBR325 derivative tra−, mob−, oriT+), and that of the natural broad host range conjugative plasmid R388 (IncW). Initially the mobilization properties of pBR type recombinant plasmids between two strains of Escherichia coli were determined in the fixed-bed reactor. Only the mobilization of the recombinant plasmid bearing a transfer origin (pCE325) was observed. The survival of E. coli strains bearing either the non-transferable plasmid pCE328 or the conjugative plasmid R388 and added to the activated sludge reactors was measured in the effluent of both types of reactors. In the fixed-bed reactor effluent, the donor populations remained stable after three days of operation and reached 103 to 105 colony forming units (cfu) ml−1, whereas they decreased in the sequenced-batch reactors: donors bearing the pCE328 plasmid decreased by 2 log units in 20 days, whereas those bearing the R388 plasmid decreased by less than 1 log unit. Mobilization of the pCE328 plasmid could not be detected in any case. Transfer of the conjugative plasmid R388, used as a positive propagation control, was detected in strains arising from activated sludge in both types of reactors. Nevertheless, establishment of transconjugants was observed only in the fixed biomass at the rate of 10−7 transconjugants per recipient.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6941.1996.tb00341.x
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  • 5
    Electronic Resource
    Electronic Resource
    Synthesis of nanosize poly(methyl methacrylate) microlatexes with high polymer content by a modified microemulsion polymerization (1998)
    Springer
    Polymer bulletin 40 (1998), S. 749-756 
    Details
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary Nanosize poly(methyl methacrylate) (PMMA) microlatexes with high PMMA/surfactant ratio have been successfully prepared by a modified microemulsion polymerization, i.e., continuous and slow addition of monomer (MMA) to the polymerizing MMA microemulsion with mild stirring. Number-average diameters of 33–46 nm with narrow polydispersity (Dv/Dn= 1.1) and polymer content of 6–24 wt% were achieved using low levels of surfactant (dodecyltrimethylammonium bromide, DTAB) — less than 1 wt% of the reaction mixture. Particle diameter depended on polymerization temperature, MMA content, and concentrations of initiator and surfactant. Larger particles wereformed when temperature was too high, initiator concentration was too high, or surfactant concentration was too low.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002890050318
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  • 6
    Electronic Resource
    Electronic Resource
    Maternal inheritance of mitochondrial DNA in sexual crosses of Pythium sylvaticumm (1989)
    Springer
    Current genetics 16 (1989), S. 373-374 
    Details
    ISSN: 1432-0983
    Keywords: Pythium sylvaticum ; Mitochondrial inheritance
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Fifty single oospore progeny from crosses between opposite mating types of Pythium sylvaticum that contained polymorphisms in mitochondrial DNA (mtDNA) for HindIII restriction sites were analyzed for patterns of mitochondrial inheritance. All progeny retained the morphological form of the oogonial parental type; the antheridial form or recombinant forms of parental mtDNA were not detected. With the techniques used, other forms of mtDNA would have been detected it they had comprised 8% or more of the mitochondrial population.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00340717
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  • 7
    Electronic Resource
    Electronic Resource
    Thorium and uranium isotopes in a manganese nodule from the Peru basin determined by alpha spectrometry and thermal ionization mass spectrometry (TIMS): Are manganese supply and growth related to climate? (1996)
    Springer
    International journal of earth sciences 85 (1996), S. 577-585 
    Details
    ISSN: 1437-3262
    Keywords: Manganese nodules ; Thorium dating ; Uranium isotopes ; Peru basin ; TIMS
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract Thorium- and uranium isotopes were measured in a diagenetic manganese nodule from the Peru basin applying alpha- and thermal ionization mass spectrometry (TIMS). Alpha-counting of 62 samples was carried out with a depth resolution of 0.4 mm to gain a high-resolution230Thexcess profile. In addition, 17 samples were measured with TIMS to obtain precise isotope concentrations and isotope ratios. We got values of 0.06–0.59 ppb (230Th), 0.43–1.40 ppm (232Th), 0.09–0.49 ppb (234U) and 1.66–8.24 ppm (238U). The uranium activity ratio in the uppermost samples (1–6 mm) and in two further sections in the nodule at 12.5±1.0 mm and 27.3–33.5 mm comes close to the present ocean water value of 1.144±0.004. In two other sections of the nodule, this ratio is significantly higher, probably reflecting incorporation of diagenetic uranium. The upper 25 mm section of the Mn nodule shows a relatively smooth exponential decrease in the230Thexcess concentration (TIMS). The slope of the best fit yields a growth rate of 110 mm/Ma up to 24.5 mm depth. The section from 25 to 30.3 mm depth shows constant230Thexcess concentrations probably due to growth rates even faster than those in the top section of the nodule. From 33 to 50 mm depth, the growth rate is approximately 60 mm/Ma. Two layers in the nodule with distinct laminations (11–15 and 28–33 mm depth) probably formed during the transition from isotopic stage 8 to 7 and in stage 5e, respectively. The Mn/Fe ratio shows higher values during interglacials 5 and 7, and lower ones during glacials 4 and 6. A comparison of our data with data from adjacent sediment cores suggests (a) a variable supply of hydrothermal Mn to sediments and Mn nodules of the Peru basin or (b) suboxic conditions at the water sediment interface during periods with lower Mn/Fe ratios.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02369012
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  • 8
    Electronic Resource
    Electronic Resource
    Spectral analyses of solar photospheric fluctuations (1977)
    Springer
    Solar physics 51 (1977), S. 273-292 
    Details
    ISSN: 1573-093X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Successful subtraction of instrumental background variations has permitted spectral analyses of two-dimensional measurement arrays of granulation brightness fluctuations at the center of the disk, arrays obtained from Stratoscope I, 1959B-flight, high-resolution frames B1551 and B3241. (a) RMS's, uncorrected for instrumental blurring, are 0.0850 of mean intensity for B1551 and 0.0736 for B3241, somewhat higher than other determinations. These between-frame and between-investigation differences probably result from a combination of calibration errors, frame resolution differences, and, most likely, granulation pattern differences. (b) Significant variations over each array of mean intensities and RMS's, determined for sub-arrays with dimensions in the 2500–10000 km range, indicate spatial brightness and RMS variations larger than the ‘scale’ of the granulation pattern, supporting a turbulent interpretation of photospheric convection. (c) One-dimensional power-spectra shapes provide objective and discriminating criteria for determining granulation pattern differences and, possibly, frame resolution. (d) Two-dimensional power spectra show small, essentially random deviations from axial symmetry which lie almost entirely within the 50% confidence limits. (e) Spectral densities and fluctuation power spectra, computed from the two-dimensional power spectra and corrected for instrumental blurring, noise, and blemishes, have a useable radial wavenumber range nearly double that of earlier Stratoscope I analyses. (f) Corrected RMS's obtained from the corrected fluctuation power spectra, 0.145 ± 0.046 for B1551 and 0.136 ± 0.048 for B3241, depend critically on the accuracy of the correction. (g) The spectra's wavenumber range includes the granulation-fluctuation-producing domain but not the Kolmogoroff domain of turbulence spectra.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00216366
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  • 9
    Electronic Resource
    Electronic Resource
    Spectral analyses of solar photospheric fluctuations (1975)
    Springer
    Solar physics 44 (1975), S. 293-297 
    Details
    ISSN: 1573-093X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Synthetic one-dimensional scans of brightness fluctuations are generated from intergranulegranule profiles (IGP), which approximate observed scans of granulation fluctuations except that the local (i.e. IGP) mean intensity is kept constant. Comparing the power spectrum of such scans with the power spectrum of observed scans shows that nearly two thirds of the low-wavenumber (k 〈 0.0025 km-1) granulation power is due to this variable mean effect. This result favors the interpretation of granulation as turbulent thermal convection but cannot rule out the laminar convection interpretation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00153209
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  • 10
    Electronic Resource
    Electronic Resource
    The history of ecology: Achievements and opportunities, Part two (1985)
    Springer
    Journal of the history of biology 18 (1985), S. 103-143 
    Details
    ISSN: 1573-0387
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , History
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00127959
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