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  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Industrial & engineering chemistry 29 (1937), S. 1393-1395 
    ISSN: 1520-5045
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Cellular and molecular life sciences 41 (1985), S. 1173-1175 
    ISSN: 1420-9071
    Keywords: Immunohistochemistry ; immunologic deficiency syndromes ; lymph nodes ; protease inhibitors
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary One of two cases of acquired immune deficiency syndrome-related persistent generalized lymphadenopathy revealed a profoundly altered pattern of dendritic reticulum cells as demonstrated by immunoreactive acid cysteine proteinase inhibitor. The alterations could be related to totally or partially destructed lymphoid secondary follicles.
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Periodica mathematica Hungarica 16 (1985), S. 175-185 
    ISSN: 1588-2829
    Keywords: Primary 26A15 ; Secondary 26A21 ; Darboux Baire 1 ; left and right cluster sets ; cluster set structure ; connected cluster set structure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Hydrobiologia 57 (1978), S. 217-224 
    ISSN: 1573-5117
    Keywords: Arizona ; desert reservoirs ; benthos standing crops ; Chironomidae ; Tubificidae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract In the two desert reservoirs examined seasonal and spatial variations in both densities and biomasses of chironomid dipterans and tubificid oligochaetes were quite high, but mean values are comparatively low. Densities of both organisms were generally low in summer, larger in autumn, and highest in spring. Disjunct distribution of the two taxa was evident. Distribution of these animals with depth in these desert reservoirs is affected by hypolimnic oxygen depletion, food supply (Chlorophyll-a concentrations), lake morphology and perhaps by substrate composition and predator-prey interactions.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Mathematical methods of operations research 23 (1979), S. B59 
    ISSN: 1432-5217
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Economics
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' Zeitschrift für analytische Chemie 325 (1986), S. 153-156 
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die Vergleichbarkeit der beiden Bestimmungsmethoden Head-Space-Technik und Extraktionsmethode für leichtflüchtige Halogenkohlenwasserstoffe wurde mit neun Verbindungen getestet. Bewertungsmaßstäbe waren die Empfindlichkeit, die Reststreuung und besonders die Verfahrensstandardabweichung. Das empfindlichere Verfahren ist die Head-Space-Technik, während die Reststreuung bei der Extraktionsmethode kleiner ist. Die aus diesen beiden Kenngrößen resultierende Verfahrensstandardabweichung zeigt über den F-Test, daß beide Analysenmethoden miteinander vergleichbar sind. Darüber hinaus werden weitere Anwendungsmöglichkeiten eines solchen statistischen Tests für die tägliche Analytik aufgezeigt.
    Notes: Summary The comparability of the head-space- and extraction techniques was tested with nine volatile halogenated hydrocarbons. The parameters were the sensitivity, the standard deviation of the residuals, and the standard deviation of the procedure. The more sensitive method is the head-space-technique while the standard deviation of the residuals is smaller in the extraction technique. The standard deviation of the procedure as a resulting value of the other two performance characteristics shows in a F-Test that both analytical methods are comparable. Some other applications of these statistical tests in everyday analytical life are pointed out.
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' Zeitschrift für analytische Chemie 322 (1985), S. 462-464 
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Versuche zum Einengen von Lösungen und Extrakten von Organochlorpesticiden im Spurenbereich wurden mit dem Rotationsverdampfer durchgeführt. Wird normales Wasserstrahlvakuum benutzt, sind die Wiederfindungsraten nicht zufriedenstellend und die Schwankungen der Einzelversuche um den Mittelwert zu groß. Abhilfe kann man mit einem Vakuum-Controller schaffen. Die Ergebnisse dieser Versuche sind besonders für spurenanalytische Bestimmungen und für die richtige Wahl der Kalibrierart wichtig.
    Notes: Summary Experiments were carried out to evaporate solutions and extracts of organochloropesticides in trace analysis with a rotary evaporator. Recoveries and scattering of single values around the mean were not satisfactory if evacuation was done by normal water-jet vacuum. Better results were obtained by application of a vacuum-controller. The experiments are important both for trace analysis determinations and the right choice of the calibration mode.
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' Zeitschrift für analytische Chemie 111 (1937), S. 1-3 
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' Zeitschrift für analytische Chemie 100 (1935), S. 48-50 
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' Zeitschrift für analytische Chemie 113 (1938), S. 241-247 
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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