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  • Digitale Medien  (35)
  • 1990-1994  (21)
  • 1950-1954  (11)
  • 1915-1919  (1)
  • 1900-1904  (2)
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Materialart
  • Digitale Medien  (35)
Erscheinungszeitraum
Jahr
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  • 11
    Digitale Medien
    Digitale Medien
    Water availability in a restored soil (1992)
    Oxford, UK : Blackwell Publishing Ltd
    Soil use and management 8 (1992), S. 0 
    Details
    ISSN: 1475-2743
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Geologie und Paläontologie , Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Abstract. The water contents of a restored and an undisturbed soil were monitored over two ‘dry’ growing seasons in order to examine the differences in crop water availability from different horizons. Bulk density was approximately 10% greater in the topsoil of restored land than in undisturbed land, and the water holding capacity was less, probably because there was less organic matter. In the subsoil a major problem was the inability of the soil to allow winter rainfall to recharge the water reserves. Bulk density and penetration resistance were greater in the restored subsoil than in the undisturbed subsoil. Increases in penetration resistance on drying may have restricted rooting activity, especially in the restored subsoil.Ripping of the subsoil to a depth greater than the usual 0.5 m, possibly early in the year in a grass crop to allow new root growth to exploit the cracks, may increase water availability for future dry seasons.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1475-2743.1992.tb00897.x
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  • 12
    Digitale Medien
    Digitale Medien
    Estimation of Antioxidants in Lard and Shortening (1951)
    s.l. : American Chemical Society
    Analytical chemistry 23 (1951), S. 1116-1120 
    Details
    ISSN: 1520-6882
    Quelle: ACS Legacy Archives
    Thema: Chemie und Pharmazie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1021/ac60056a018
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  • 13
    Digitale Medien
    Digitale Medien
    Butylated Hydroxyanisole in Lard and Shortening Control Analysis (1951)
    s.l. : American Chemical Society
    Analytical chemistry 23 (1951), S. 1120-1123 
    Details
    ISSN: 1520-6882
    Quelle: ACS Legacy Archives
    Thema: Chemie und Pharmazie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1021/ac60056a019
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  • 14
    Digitale Medien
    Digitale Medien
    Correction. Estimation of 2- and 3-tert-Butyl-4-hydroxyanisole Isomers (1952)
    s.l. : American Chemical Society
    Analytical chemistry 24 (1952), S. 1015-1015 
    Details
    ISSN: 1520-6882
    Quelle: ACS Legacy Archives
    Thema: Chemie und Pharmazie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1021/ac60066a602
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  • 15
    Digitale Medien
    Digitale Medien
    The influence of soil factors on the growth of a grass/clover sward on a restored opencast site in Northumberland, UK (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 49 (1994), S. 0 
    Details
    ISSN: 1365-2494
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: The growth of grass and clover components in mixed swards on a site restored after opencast coal mining and an undisturbed control site were compared. Soil nitrogen supply was reduced at the restored site. This inhibited grass growth but was beneficial for the clover component.Growth at the restored site was also inhibited by a compacted subsoil, which reduced available soil water content and impeded access to available soil water. This inhibited crop production from the middle of the second silage crop onwards. In 1989 this was associated with the soil at the restored site reaching permanent wilting point at 40cm. In 1990 this effect was associated with the restored site soil reaching permanent wilting point at 70cm. These drought effects reduced clover growing point population and stolon mass. Grass tiller populations were unaffected.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1365-2494.1994.tb02022.x
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  • 16
    Digitale Medien
    Digitale Medien
    Allergic contact dermatitis from TENS gel (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Contact dermatitis 30 (1994), S. 0 
    Details
    ISSN: 1600-0536
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1111/j.1600-0536.1994.tb00608.x
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  • 17
    Digitale Medien
    Digitale Medien
    The immunology of primary sclerosing cholangitis (1990)
    Springer
    Springer seminars in immunopathology 12 (1990), S. 121-128 
    Details
    ISSN: 1432-2196
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Conclusion A number of recent studies have been discussed which provide strong evidence that genetic and immunological factors are important in the pathogenesis of PSC. Current evidence suggests that PSC is, like primary biliary cirrhosis, an immunologically mediated disease [8]. It seems likely that the immunological destruction of the biliary system is triggered in genetically predisposed individuals by viruses or bacteria [8]. The association with ulcerative colitis may be explained by the passage of viral or bacterial organisms across the damaged colonic epithelial barrier into the systemic circulation. Further studies are needed to confirm this attractive hypothesis.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00192687
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  • 18
    Digitale Medien
    Digitale Medien
    Interactions between two neurons in contact chemosensilla of the grasshopper, Schistocerca americana (1990)
    Springer
    Journal of comparative physiology 167 (1990), S. 431-436 
    Details
    ISSN: 1432-1351
    Schlagwort(e): Contact chemosensilla ; Grasshopper ; Inhibition ; Nicotine
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Notizen: Summary The tibial contact chemosensilla of Schistocerca americana contain several neurons, one of which responds to nicotine hydrogen tartrate and certain other compounds. The activity of this cell is sometimes briefly interrupted by the firing of a second cell in the same sensillum which usually only fires a few times in the first 500 ms of a stimulation. The evidence suggests that the nicotine-sensitive cell is directly inhibited by the activity of the second cell. Not all cells in the sensillum produce the same effect.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00192578
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  • 19
    Digitale Medien
    Digitale Medien
    Demonstration of Strain-hardening of Steel (1915)
    [s.l.] : Nature Publishing Group
    Nature 94 (1915), S. 589-589 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] THE accompanying photograph (Fig. 1) represents the side of a steel bar. The bar was first marked by a punch in the way shown, and the punch marks were afterwards completely filed out. The side was then polished and the bar pulled in a testing machine beyond the elastic limit of the material. ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/094589c0
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  • 20
    Digitale Medien
    Digitale Medien
    Of animals and men (1992)
    [s.l.] : Nature Publishing Group
    Nature 357 (1992), S. 187-187 
    Details
    ISSN: 1476-4687
    Quelle: Nature Archives 1869 - 2009
    Thema: Biologie , Chemie und Pharmazie , Medizin , Allgemeine Naturwissenschaft , Physik
    Notizen: [Auszug] SIR - I was surprised that Nature1 thought it necessary to make something of a conundrum of the fact that Charles Darwin was a strong supporter of physiology and recognized the need for experiment on animals. In 1875, largely in response to a vigorous antivivisection-ist campaign, the Cardwell ...
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1038/357187a0
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