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  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Industrial & engineering chemistry 33 (1941), S. 1181-1182 
    ISSN: 1520-5045
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
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  • 2
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Industrial & engineering chemistry 33 (1941), S. 1536-1536 
    ISSN: 1520-5045
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
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  • 3
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of the American Chemical Society 55 (1933), S. 4299-4304 
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
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  • 4
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 178 (1956), S. 490-490 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The opinions or assertions in this letter are the private ones of the writers, and are not to be construed as official or reflecting the views of the Navy ...
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Geostandards and geoanalytical research 5 (1981), S. 0 
    ISSN: 1751-908X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: The combined water (H2O+) in 30 geochemical standards having known and unknown water contents was determined by an elemental analyzer on 1 day during each of 6 weeks over a period of several months. The analysis of variance of the data measured in the form of a Youden square shows an extremely significant variation due to some unknown cause during the weeks in which the data were obtained. The higher water contents of the first two sets were obtained in the fall season when this area (Reston, Va.) has high and variable humidity, whereas the last four sets were measured during winter months. Humidity, however, was not included as a variable in the design and was not measured.The first two of three average blanks for H2O+, measured after determining H2O+ contents of about 11 percent for two samples, are noticeably higher than the third average blank. Similarly, the first of two average blanks for H2O+, measured after determining the H2O+ content (4.70 percent) of PCC-1, is higher than the second. Data for the last 4 weeks were used to calculate the line of regression and the extremely significant correlation coefficient. The line is used to predict suggested revisions of the “best” H2O+ contents of the standards.Coefficients of variation calculated from the data for the last 4 weeks indicate that there is no severe sampling problem due to the small sample size (20 mg) taken for the determinations. The coefficients follow the general trend of large coefficients for samples containing the least amount of the constituent (BHVO-1: x̄= 11.76% H2O+; C.V. = 7.3%) and of small coefficients for samples containing the greatest amount (BX-N: x̄= 11.76% H2O+; C.V. = 0.4%).
    Type of Medium: Electronic Resource
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