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  • 1990-1994  (3)
  • 1992  (3)
  • Choristoneura occidentalism  (1)
  • Detonation  (1)
  • Inorganic Chemistry
  • Occupational Health and Environmental Toxicology
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Material
Years
  • 1990-1994  (3)
Year
Keywords
  • 1
    Electronic Resource
    Electronic Resource
    Studies of reactive triple shock collision (1992)
    Springer
    Shock waves 2 (1992), S. 203-209 
    Details
    ISSN: 1432-2153
    Keywords: Reactive Mach interaction ; CFD ; Detonation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics , Technology
    Notes: Abstract Experimental studies have been performed on two-dimensional reactive blast waves in a diverging nozzle. Both blast and reaction wave loci have been measured and the results compared with numerical calculations. With the inclusion of additional wedges into the channel reactive Mach reflections were generated and the subsequent interactions of these waves have been observed and modelled using a full chemistry scheme. The results are in excellent agreement and the technique shows great promise for the study of the coupling between chemistry and gas dynamics under conditions similar to those obtaining within a single cell of a gaseous detonation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01414756
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Technique for using microencapsulated terpenes in lepidopteran artificial diets (1992)
    Springer
    Journal of chemical ecology 18 (1992), S. 543-560 
    Details
    ISSN: 1573-1561
    Keywords: Artificial diets ; Choristoneura occidentalism ; Lepidoptera ; Tortricidae ; Douglas fir ; microencapsulated terpenes ; monoterpenes ; multiple generation bioassay ; nutritional ecology ; oxygenated monoterpenes ; Pseudotsuga menziesii ; western spruce budworm
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract We have developed and tested a technique to microencapsulate terpene compounds by forming gelatin-walled microcapsules around the terpene essential oils. Eight terpenes that are common constituents of Douglas fir (Pseudotsuga menziesii) oleoresin were encapsulated, including five monoterpenes (α-pinene,β-pinene, camphene, myrcene, and limonene) and three oxygenated monoterpenes (bornyl acetate, linalool, andβ-citronellol). The encapsulated terpenes were mixed into artificial diets to determine the effects they had on western spruce budworm (Choristoneura occidentalis) survival and reproduction, using a three-generation bioassay. We describe the technique and present data from preliminary bioassays with seven of the terpenes to demonstrate thatC. occidentalis larvae would consume diets fortified with microencapsulated terpenes. The technique is useful because it helps to reduce the rate at which terpenes volatilize from the diets and it “packages” the terpenes in a manner more closely resembling the way they are present in the resin canals of plant foliage. Many scientists investigating the biological importance of terpenes in mediating plant-herbivore interactions may find that microencapsulated terpenes are useful in both laboratory diet studies and field and greenhouse experiments with plant material.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00987818
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Determination of the Enthalpies of Formation of DyI2 and DyI3 and estimation of the Dy3+/Dy2+ standard aqueous electrode potentialDedicated to Professor Rudolf Hoppe on his 70th Birthday (1992)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 616 (1992), S. 162-168 
    Details
    ISSN: 0044-2313
    Keywords: Dysprosiumdiiodide ; dysprosium triiodide ; enthalpy ; electrode potential ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Bestimmung der Bildungsenthalpien von DyI2 und DyI3 sowie Abschätzung des Dy3+/Dy2+-Standardelektrodenpotentials in wäßrigem MediumDyI2 and DyI3 wurden nach Literaturmethoden hergestellt. Ihre Lösungsenthalpien wurden bestimmt und die Bildungsenthalpien zu ΔfH°(DyI3, s, 298 K) = -(394 ± 16) kJ · mol-1 und ΔfH°(DyI2, s, 298 K) = -(616 ± 10) kJ· mol-1 berechnet. Entsprechenden Literaturangaben sowie geschätzten Lösungsenthalpien und Standardentropien wurde E°(Dy3+/Dy2+, aq.) zu -(2.6 ± 0.2) V berechnet. Ein Vergleich der Enthalpien für die Reduktion von DyI3 zu DyI2 bzw. DyI zu DyI2 wird vorgenommen.
    Notes: DyI2 and Dy3I were synthesized by literature techniques. Their enthalpies of solution were determined and their enthalpies of formation calculated to be ΔfH°(DyI2, s, 298 K) = -(394 ± 16) kJ· mol-1 and ΔfH°(DyI3, s, 298 K) = -(616 ± 10) kJ· mol-1. With appropriate literature and estimated enthalpies of solution and standard entropies, the E°(Dy3+/Dy2+, aq) was calculated to be -(2.6 ± 0.2) V. A comparison is made of the enthalpies of reduction of DyI3 to DyI2 and of DyCl3 to DyCl2.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19926161025
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    Paper (German National Licenses)
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