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  • Elsevier  (39)
  • Springer  (27)
  • Institute of Physics  (11)
  • Blackwell Publishing Ltd  (6)
  • American Institute of Physics (AIP)  (2)
  • Periodicals Archive Online (PAO)  (2)
  • Amsterdam : Elsevier
  • Geological Society of America (GSA)
  • Nature Publishing Group
  • 2000-2004
  • 1995-1999  (53)
  • 1970-1974  (27)
  • 1960-1964  (9)
  • 1950-1954
  • 1996  (53)
  • 1974  (27)
  • 1961  (9)
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  • 2000-2004
  • 1995-1999  (53)
  • 1970-1974  (27)
  • 1960-1964  (9)
  • 1950-1954
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  • 11
    Electronic Resource
    Electronic Resource
    Effects of picloram on shoot anatomy of red maple and white ash (1974)
    Oxford, UK : Blackwell Publishing Ltd
    Weed research 14 (1974), S. 0 
    Details
    ISSN: 1365-3180
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: The anatomy of the shoot system of red maple and white ash was examined at various times after treatment with picloram. Xylem blockage, enlargement of cortical and pith cells and eventual necrosis of the shoot apex, parenchymatous and phloem tissues of red maple plants were features shown by picloram treatment. Red maple shoots were desiccated and dead by 22 days after treatment commenced. White ash shoots showed some increased mitotic activity but at the end of 22 days of picloram treatment, the leaves were still turgid and the internal anatomy of the shoot system scarcely altered. It is suggested that the susceptibility of red maple plants can be explained in part by the effects picloram has on xylem blockage and necrosis of parenchymatous tissues in the shoot system of this species.Effects du piclorame sur l'analomie de la partie aérienne de l'erable rouge et du frêne blancL'anatomie de la partie aérienne de l'érable rouge et du frêne blanc a été examinee i diverses dpoques aprés un traitement au piclorame. Le blocage du xyléme, le grossissement des cellules corticales et médullaires, ainsi qu'une Éventuelle nécrose des apex des tiges, des tissus parenchymateux et du phloéme des Arables rouges furent les effects consécutifs au traitement par le piclorame. La partie aérienne des Arables rouges se déssécha et mourut 22 jours aprés le déA but du traitement. La partie aérienne du Fréne blanc manifesta un accrolssement d'activité mitotique. mais, 22 jours aprés le traitement au piclorame, les feuilles étaient encore turgesccntes et l'anatomie interne des organes aériens k peine altérte. II est suggéré que la sensibility de rérable rouge peut être expliquée en partie par les effets du piclorame sur le blocage du xyléme et les necroses des tissus parenchymateux dans les organes adriens de cette espèce.Die Wirkung von Picloram auf die Anatomic des Sprosses von Acer rubrum L. und Fraxinus americana L.Es wurde die Anatomie des Sprosssystems von Acer rubrum L. und von Fraxinus americana L. zu verschiedencn Zeiten nach einer PJilorambehandlung untersucht. Bei Acer rubrum traten als Sympiome auf: Verstopfen des Xylems, VergröBerung der Rinden-und Markzellen und schliesslich Absterben der Sprossspitze, des parenchymatischen und des Phloemgewebcs. 22 Tage nach der Behandlung waren dis Sprosse ausgelrocknet und tot. Bei Fraxinus americana zeigten die Sprosse erhohte mitotische AktivitSt, aber 22 Tage nach der Piclorambehandlung waren die Blotter noch turgeszent und der innere Auf bau des Sprols systems war kaum verSndert. Die Befunde deuten darauf hin, daβ die Empfindlichkeit von Acer rubrum gegenuber Pictoram zum Teil mit seiner Wirkung auf das Xylem und das parenchymatische Gewebe im Sproβsystem erklärt werden kann.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3180.1974.tb01046.x
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  • 12
    Electronic Resource
    Electronic Resource
    Towards a quantitative description of field-impressed anisotropy of susceptibility (1996)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical journal international 126 (1996), S. 0 
    Details
    ISSN: 1365-246X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: A simplified model of domain rearrangement in multidomain particles following the application of an alternating (AF) or direct (DF) field is used to quantify the dependence of anisotropy of magnetic susceptibility on magnetic history. To be able to account for changes in the average susceptibility (i.e. The average of three mutually perpendicular susceptibility measurements) of the sample following field treatment, the model has to be refined by introducing interaction between domains. By fitting theoretical curves of anisotropy versus peak AF to experimental results for samples containing different size fractions of magnetite particles, of average grain size ranging from 0.7 to 58 μm, four relevant parameters can be computed (for each sample), which enables a good fit to be obtained. By allowing two of these parameters to change systematically when a DF is applied (and an IRM is acquired), the anisotropy dependence on direct field strength can also be modelled. This includes the sign change observed as the field-impressed ellipsoid changes from prolate to oblate, together with increases in the average susceptibility as the field increases. However, some details, such as discrepancies between predicted and actual increases in the average susceptibility at high fields, suggest that further refinement of the model is required.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-246X.1996.tb05306.x
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  • 13
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    Tracing Those Who Left: "Mobility Studies and the Soundex Indexes to the U.S. Census" (1974)
    Beverley Hills, Calif. : Periodicals Archive Online (PAO)
    Journal of Urban History. 1:1 (1974:Nov.) 73 
    Details
    ISSN: 0096-1442
    Topics: Architecture, Civil Engineering, Surveying
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:d429-1974-001-01-000004
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  • 14
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    SPATIAL DISPERSION OF INTRA-URBAN JUVENILE DELINQUENCY (1974)
    Macomb, Ill., etc. : Periodicals Archive Online (PAO)
    Journal of Geography. 73:3 (1974:Mar.) 20 
    Details
    ISSN: 0022-1341
    Topics: Geography
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:1129-1974-073-03-000001
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  • 15
    Electronic Resource
    Electronic Resource
    Pentamerism and the ancestral echinoderm (1974)
    [s.l.] : Nature Publishing Group
    Nature 250 (1974), S. 82-83 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Fig. 1 Nichols' hypothetical ancestral echinoderm, in cross section. Nichols' reconstruction, like many primitive echinoderms, has mouth, hydropore and anus in a straight line. Such an animal must live with the anus on the downstream side, to carry waste products away from mouth and hydro-pore ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/250082a0
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  • 16
    Electronic Resource
    Electronic Resource
    ISOTOPIC STUDIES OF PORPHYRIN AND HEMEMETABOLISM: BONANZAS AND PITFALLS (1974)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 241 (1974), 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.1749-6632.1974.tb21893.x
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  • 17
    Electronic Resource
    Electronic Resource
    Effect of external application of pesticides to the fertile egg on hatching success and early chick performance 1. Pre-Incubation Spraying with DDT and Commercial Mixtures of 2, 4-D: Picloram and 2, 4-D: 2,4,5-T (1974)
    Springer
    Bulletin of environmental contamination and toxicology 11 (1974), S. 33-38 
    Details
    ISSN: 1432-0800
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering , Medicine
    Notes: Summary In 2 separate experiments, solutions of DDT, 2,4-D + picloram and 2,4-D + 2,4,5-T were sprayed on fertile chicken eggs preceeding incubation. No treatments were found to cause any adverse effect on hatching success, incidence of malformed embryos or subsequent chick mortality relative to control groups. Weight gain of male chicks from eggs treated with DDT (1.1 kg/ha) and the 2,4-D + 2,4,5-T combination (1.1 and 11.2 kg/ha) was found to be greater than that of control chicks. No changes were noted with the females. Residue analysis verified pesticide penetration into the egg.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01685025
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  • 18
    Electronic Resource
    Electronic Resource
    Coring artifacts and contaminant inventories in lake sediment (1996)
    Springer
    Journal of paleolimnology 15 (1996), S. 99-106 
    Details
    ISSN: 1573-0417
    Keywords: lake sediments ; gravity core ; freeze core ; coring artifacts ; contaminant concentration ; contaminant inventory
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences
    Notes: Abstract Sediments of Lake 382, Experimental Lakes Area, Canada, were sampled at six sites using a 5-cm Wildco KB core sampler (KB), a similar device incorporating a ball check valve (BC), and a 0.2 m by 1.2 m flat-faced aluminum freeze core sampler (FC). Cores were sectioned at 1-cm intervals to a depth of 15 cm. Contaminant (210Pb and 137Cs) concentrations (Bq g-1) were measured by gamma spectroscopy, and inventories (Bq cm-2) were calculated following standard methods. Sediments collected using FC, BC and KB had similar contaminant concentrations, however, cores collected by FC and BC had lower estimated inventories than KB cores. Differences between estimates appear to be caused by differences in the water content (WC) of core material. Laboratory studies confirm that FC sediments have higher WC than tube-cored sediment. We hypothesize that ice crystal formation increases the WC of freeze cores, resulting in lower contaminant inventories. Loss of surficial sediment caused by a ‘bow wave’ may have a similar effect on BC samples. We conclude that KB core gear is appropriate for sampling sediments to measure contaminant concentrations and inventories in recently deposited sediments.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00176992
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  • 19
    Electronic Resource
    Electronic Resource
    UV spectroscopy of metal volatilization during thermal plasma processing of waste glass melts (1996)
    Springer
    Plasma chemistry and plasma processing 16 (1996), S. 449-460 
    Details
    ISSN: 1572-8986
    Keywords: Spectroscopy ; volatilization ; iron ; nickel ; chromium ; waste vitrification
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Technology
    Notes: Abstract Atomic emission spectroscopy (AES) is used to monitor volatilization during waste vitrification with thermal plasmas. Model baste specimens consist of am alumino-silicate clay spiked with 10 wt. % Fe, Ni, or Cr. Specimens are vitrified in processing atmospheres with 0, 8.5, and 17 vol. % oxygen/argon concentrations. Particulate generated from condensation of the volatilized materials is collected following each specimen run and analyzed by energy dispersive X-ray analysis to determine composition. Spectra are collected from the ultraviolet range 240–380 nm in where the presence of metal vapor is readily detected. Correlation between line emission intensities and volatilization rates allows the establishment of provisional detection limits for the volatilization of Ni, Cr, Si, and Fe, of 1 × 103 g/s, 4 × 104 g/s, 2 × 104 g/s, and 5 × 105 g/s, respectively. The results of this investigation support the concept of using AES as an in-situ process monitor for feedback to optimize plasma processing of hazardous metal-containing waste.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01447155
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  • 20
    Electronic Resource
    Electronic Resource
    Metal co-injection moulding (1996)
    Springer
    Journal of materials science 15 (1996), S. 2033-2035 
    Details
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00278613
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