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  • Burmanniaceae  (2)
  • thermal decomposition
  • 2000-2004  (4)
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  • 2000-2004  (4)
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  • 1
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    Unknown
    A new species of Afrothismia (Burmanniaceae; tribe: Thismieae) from the western foothills of Mount Cameroon (2004)
    In:  Blumea - Biodiversity, Evolution and Biogeography of Plants (0006-5196) vol.49 (2004) nr.2/3 p.451
    Details
    Publication Date: 2015-03-06
    Description: Afrothismia foertheriana, a new species of Burmanniaceae (tribe: Thismieae) from the peripheral zone of the Onge Forest Reserve in Cameroon’s Southwest Province is described and illustrated. The papillose, multicellular floral trichomes, the tepal’s erose margins, the small, zygomorphic perianth mouth and the dull purplish brown coloration give A. foertheriana a distinctive appearance within the genus. The species is here assessed as being critically endangered.
    Keywords: Burmanniaceae ; Thismieae ; Afrothismia foertheriana ; Cameroon ; conservation ; taxonomy
    Repository Name: National Museum of Natural History, Netherlands
    Type: Article / Letter to the editor
    Format: application/pdf
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  • 2
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    Unknown
    A new species of Afrothismia (Burmanniaceae; tribe: Thismieae) from the western foothills of Mount Cameroon (2004)
    In:  Blumea: Biodiversity, Evolution and Biogeography of Plants vol. 49 no. 2/3, pp. 451-456
    Details
    Publication Date: 2024-01-12
    Description: Afrothismia foertheriana, a new species of Burmanniaceae (tribe: Thismieae) from the peripheral zone of the Onge Forest Reserve in Cameroon\xe2\x80\x99s Southwest Province is described and illustrated. The papillose, multicellular floral trichomes, the tepal\xe2\x80\x99s erose margins, the small, zygomorphic perianth mouth and the dull purplish brown coloration give A. foertheriana a distinctive appearance within the genus. The species is here assessed as being critically endangered.
    Keywords: Burmanniaceae ; Thismieae ; Afrothismia foertheriana ; Cameroon ; conservation ; taxonomy
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
    Format: application/pdf
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  • 3
    Electronic Resource
    Electronic Resource
    Vaporisation dEcomposition thermique de dimethylhydrazine, d'hydrate d'hydrazine de leur melange UH25 (2000)
    Springer
    Journal of thermal analysis and calorimetry 63 (2000), S. 559-564 
    Details
    ISSN: 1572-8943
    Keywords: asymmetric dimethylhydrazine ; hydrazine monohydrate ; propellant ; thermal decomposition ; vapour pressure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Engine Viking of Ariane 4 is supplied with asymmetrical dimethylhydrazine (UDMH) (CH3)2NNH2. An addition of a small amount of hydrazine hydrate N2H4×H2O was proposed to increase the thermal stability of UDMH. The mixture where the mass ratio (CH3)2NNH2/N2H4×H2O is equals to 75/25, is called UH25. These propelling agents are unstable when they are heated and the optimisation of burning conditions requires a good knowledge of their vaporisation and of their thermal decomposition kinetics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1010154223757
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  • 4
    Electronic Resource
    Electronic Resource
    Pression De Vapeur Et Decomposition Thermique De La Monomethylhydrazine (2000)
    Springer
    Journal of thermal analysis and calorimetry 62 (2000), S. 711-714 
    Details
    ISSN: 1572-8943
    Keywords: ergol ; monomethylhydrazine ; thermal decomposition ; vapour pressure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Monomethylhydrazine (MMH) (CH3)NHNH2 is currently used as fuel for spacecraft engine combustion chambers. The Aestus engine of the upper stage of Ariane 5 is fed with MMH under pressure of 16 bars. The propellant, initially at room temperature, is about 393 K when introduced into the combustion chamber, due to heating up through the regenerative circuit. As MMH is unstable above 373 K, it has been necessary to check its decomposition rate and vapor pressure under such conditions. The vapor pressure of this propellant has been measured in a pressure vessel and the thermal decomposition rate was determined with the same device up to 500 K.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1012017308823
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