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  • 2020-2024  (1)
  • 1940-1944  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    Extraction and Purification of Penicillin (1944)
    [s.l.] : Nature Publishing Group
    Nature 154 (1944), S. 459-459 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] PUBLISHED methods for the extraction and purification of penicillin1,2,3 are all based on the observation that penicillin can be extracted by ether, amyl acetate or chloroform from strongly acid aqueous solutions. Considerable losses of the antibacterial substance occur during ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/154459a0
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    Paper (German National Licenses)
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  • 2
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    Extraction and Purification of Penicillin (1944)
    Springer Nature
    Details
    Publication Date: 1944-10-01
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Springer Nature
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    PAPER CURRENT
  • 3
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    Mapping release and propagation areas of permafrost-related rock slope failures to identify hot spots for hazard assessment, French Alps (2023)
    In:  XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
    Details
    Publication Date: 2023-08-02
    Description: Permafrost-affected rockwalls are increasingly impacted by the effects of climate change and rising air temperature leading to rock slope failures. These events could be a threat for human lives and infrastructure, which underlines the need of better knowledge about their triggering mechanism and propagation. The aim of this study was to propose a regional mapping approach of susceptible release areas of rock slope failures and resulting runout distances. This information is a first step to identify hotspots for subsequent hazard assessment. To do so, we used an inventory of 1389 rock slope failures (volume 〉 102 m3) recorded in the Mont-Blanc massif on 2007-2019 period and determined the topographical and permafrost conditions that are most prone to their triggering using a digital terrain model and a permafrost map. These conditions are used in a multi-criteria GIS approach to identify potential unstable slopes at the French Alps scale. Then, the potential release area map is used as input to map the propagation of potential events, using a model based on a normalised area dependant energy line principle. The resulting maps of release and propagation areas will be used to point out human assets (mountaineering routes, high mountain infrastructure, tourism areas) and lakes (that can provoke cascading hazards) which could be impacted by rock slope failure hazards. This work is a first step to identify hot spots for a regional hazard assessment where more in depth analyses will be required to evaluate potential risks at a local scale.
    Language: English
    Type: info:eu-repo/semantics/conferenceObject
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    PAPER (OA)
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