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  • Articles  (124)
  • American Chemical Society  (83)
  • Springer  (41)
  • 2000-2004  (98)
  • 1920-1924
  • 1905-1909
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  • Articles  (124)
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  • 1
    Electronic Resource
    Electronic Resource
    CHEMISTRY OF THE PROTEIDS. (1906)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 28 (1906), S. 911-913 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja01973a013
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  • 2
    Electronic Resource
    Electronic Resource
    DERIVATIVES OF 2,4-DINITRO-BENZALDEHYDE.1 II. (1921)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 43 (1921), S. 346-348 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja01435a013
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  • 3
    Electronic Resource
    Electronic Resource
    DERIVATIVES OF 2,4-DINITRO-BENZALDEHYDE. III (1923)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 45 (1923), S. 1060-1065 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja01657a028
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  • 4
    Electronic Resource
    Electronic Resource
    CHEMISTRY OF THE ALBUMENS. (1906)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 28 (1906), S. 658-660 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja01971a019
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  • 5
    Electronic Resource
    Electronic Resource
    The Production of Phosphoric Acid by Smelting Phosphate Rock in a Fuel-Fed Furnace. (1920)
    s.l. : American Chemical Society
    Industrial & engineering chemistry 12 (1920), S. 646-650 
    Details
    ISSN: 1520-5045
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ie50127a010
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  • 6
    Electronic Resource
    Electronic Resource
    Distribution and Variability of Surface Soil Properties at a Regional Scale (2000)
    Springer
    Soil Science Society of America journal 64 (2000), S. 974-982 
    Details
    ISSN: 1435-0661
    Keywords: MBC, microbial biomass carbon MEP, Mehlich extractable phosphorus MLRA, Major Land Resource Areas MWD, mean-weight diameter NRCS, Natural Resources Conservation Service NRI, National Resource Inventory PMN, potentially mineralizable nitrogen PSU, primary sampling units TOC, total organic carbon WSA, water stable aggregates
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: e transformation resulted in normal distributions for most soil properties and reduced variability two- to threefold. However, a few soil properties remained non-normally distributed. Soil pH may be monitored at the regional scale with a high degree of precision. Small changes in soil C content (3–8% of the regional mean) may be detected using loge transformed total organic C as the indicator. Sampling soil properties as part of the NRI should improve NRCS' ability to monitor soil condition on a regional scale.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/
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  • 7
    Electronic Resource
    Electronic Resource
    Die Wirkungen der totalen Leberexstirpation (1924)
    Springer
    Reviews of physiology, biochemistry and pharmacology 23 (1924), S. 212-273 
    Details
    ISSN: 1617-5786
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Zusammenfassung Kurz zusammengefasst sind die wichtigsten, hier niedergelegten Tatsachen folgende: Es wurde eine Methode für die totale Entfernung der Leber bei Hunden ausgebildet, welche frei von den meisten Fehlerquellen ist, die früheren Exstirpationsmethoden des Organs bei Säugetieren anhaften. Es wurde gefunden, dass eine geeignete Einführung von Glukose bei derart operierten Hunden das Leben viele Stunden nach Verlust des gesamten Lebergewebes erhält. Von den vielen an hepatektomierten Tieren gemachten Beobachtungen möchten wir hervorheben, 1. dass die Leber zur Erhaltung des Blutzuckerspiegels absolut wesentlich ist; 2. dass die Leber der wichtigste Faktor, wenn nicht der einzige, bei dem Prozess der Desamidierung und der Harnstoffbildung ist, und 3. dass Bilirubin auch ohne Mitwirkung der Leber gebildet werden kann.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01924578
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  • 8
    Electronic Resource
    Electronic Resource
    The Physical Tourist¶Scientific Travels in the Irish Countryside (2000)
    Springer
    Physics in perspective 2 (2000), S. 313-326 
    Details
    ISSN: 1422-6960
    Keywords: Key words. History of science; Ireland; Rosse Telescope; St. Patrick's College; Birr Demense; Irish National Museum (Galway); Giant's Causeway.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract. Newly-prosperous Ireland has a number of sites which the scientific traveller can visit. There are apparatus museums at Birr and Maynooth, and a collection of early apparatus at the physics department of the Irish National University in Galway. The main attraction at Birr is the Rosse Telescope, with its 6-ft diameter speculum, built in the 1840s, and recently refurbished. Travellers to Northern Ireland can see applied geology at the Giant's Causeway.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s000160050048
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  • 9
    Electronic Resource
    Electronic Resource
    Seed dispersal and movement patterns in two species of Ceratogymna hornbills in a West African tropical lowland forest (2000)
    Springer
    Oecologia 125 (2000), S. 249-257 
    Details
    ISSN: 1432-1939
    Keywords: Seed dispersal Seed shadow Hornbills Telemetry Tropical frugivory
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract. We studied two species of Ceratogymna hornbills, the black-casqued hornbill, C. atrata, and the white-thighed hornbill, C. cylindricus, in the tropical forests of Cameroon, to understand their movement patterns and evaluate their effectiveness as seed dispersers. To estimate hornbill contribution to a particular tree species' seed shadow we combined data from movements, determined by radio-tracking, with data from seed passage trials. For 13 individuals tracked over 12 months, home range varied between 925 and 4,472 ha, a much larger area than reported for other African avian frugivores. Seed passage times ranged from 51 to 765 min, with C. atrata showing longer passage times than C. cylindricus, and larger seeds having longer gut retention times than smaller seeds. Combining these data, we estimated that seed shadows were extensive for the eight tree species examined, with approximately 80% of seeds moved more than 500 m from the parent plant. Maximum estimated dispersal distances for larger seeds were 6,919 and 3,558 m for C. atrata and C. cylindricus, respectively. The extent of hornbill seed shadows suggests that their influence in determining forest structure will likely increase as other larger mammalian dispersers are exterminated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s004420000445
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  • 10
    Electronic Resource
    Electronic Resource
    New ways of determining structural groups in brown coals and their bioconversion products by FT IR spectroscopy (2000)
    Springer
    Applied microbiology and biotechnology 54 (2000), S. 681-685 
    Details
    ISSN: 1432-0614
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Abstract New methods of determining the structural groups —COOH and —CH2— have been developed. The investigation of carboxyl groups is possible both after derivatization with p-fluorophenacylbromide and by quantitative interpretation of the Fourier transform infrared (FT IR) spectra. There exists a linear relationship between the results of these two methods that is generally valid for the analysis of all brown coal components. The maximum extinction coefficient of the symmetric stretching vibration band of the CH2 groups has been determined using model substances. This allows quantification of this structural group directly from the FT IR spectrum. The results agree with the contents of methylene groups as determined by 13C-cross polarization–magic angle spinning–nuclear magnetic resonance (13C CPMAS NMR) spectroscopy. Using these methods, the COOH and CH2 groups contained in brown coals of the North Rhine region and in their bioconversion products have been quantified.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002530000419
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