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  • Wiley  (8)
  • Molecular Diversity Preservation International  (5)
  • Oslo  (3)
  • BioMed Central  (1)
  • Geological Society of London
  • MDPI
  • 1
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    Skrifter om Svalbard og Ishavet (1928-1940)
    Oslo ; Nr. 13.1928 - 81.1940
    Details Availability
    Call number: ZSP-597
    Parallel Title: 73=1927/36 von Norges Svalbard- og Ishavs-Undersøkelser: Report on the activities of Norges Svalbard- og Ishavs-Unders/okelser
    Former Title: Vorg. ---〉 Skrifter om Svalbard og Nordishavet
    Subsequent Title: Forts. ---〉 Norges Svalbard- og Ishavs-Undersøkelser: Skrifter / Norges Svalbard- og Ishavsundersøkelser
    Branch Library: GFZ Library
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  • 2
    Monograph available for loan
    Monograph available for loan
    Reports (1954-1958)
    Oslo ; 1954/55 - 1957/58[?]
    Details Availability
    Call number: MOP 31538
    Type of Medium: Monograph available for loan
    Former Title: Vorg. ---〉 Institutt for Vaer- og Klimaforskning 〈Oslo〉: Publication
    Location: MOP - must be ordered
    Branch Library: GFZ Library
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  • 3
    Monograph available for loan
    Monograph available for loan
    Report on a cloud seeding experiment February 1956 (1955)
    Oslo
    Associated volumes
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    Call number: MOP 31538(1954-1958)
    In: Reports
    Type of Medium: Monograph available for loan
    Pages: 2 S.
    Series Statement: Reports / Institute for Weather and Climate Research, the Norwegian Academy of Sciences and Letters 1955/1956, 6
    Location: MOP - must be ordered
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  • 4
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    Top-down network analysis characterizes hidden termite–termite interactions (2016)
    Wiley
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    Publication Date: 2016-08-04
    Description: The analysis of ecological networks is generally bottom-up, where networks are established by observing interactions between individuals. Emergent network properties have been indicated to reflect the dominant mode of interactions in communities that might be mutualistic (e.g., pollination) or antagonistic (e.g., host–parasitoid communities). Many ecological communities, however, comprise species interactions that are difficult to observe directly. Here, we propose that a comparison of the emergent properties from detail-rich reference communities with known modes of interaction can inform our understanding of detail-sparse focal communities. With this top-down approach, we consider patterns of coexistence between termite species that live as guests in mounds built by other host termite species as a case in point. Termite societies are extremely sensitive to perturbations, which precludes determining the nature of their interactions through direct observations. We perform a literature review to construct two networks representing termite mound cohabitation in a Brazilian savanna and in the tropical forest of Cameroon. We contrast the properties of these cohabitation networks with a total of 197 geographically diverse mutualistic plant–pollinator and antagonistic host–parasitoid networks. We analyze network properties for the networks, perform a principal components analysis (PCA), and compute the Mahalanobis distance of the termite networks to the cloud of mutualistic and antagonistic networks to assess the extent to which the termite networks overlap with the properties of the reference networks. Both termite networks overlap more closely with the mutualistic plant–pollinator communities than the antagonistic host–parasitoid communities, although the Brazilian community overlap with mutualistic communities is stronger. The analysis raises the hypothesis that termite–termite cohabitation networks may be overall mutualistic. More broadly, this work provides support for the argument that cryptic communities may be analyzed via comparison to well-characterized communities. Many species–species interactions are difficult to observe directly. Here we propose that comparing the network topology of these obfuscated communities to the network topology of well-studied, detail-rich communities will provide insight into the structure of the obfuscated communities. We examine termite mound cohabitation as a case study; the analysis raises the hypothesis that the interactions contained therein may be overall mutualistic.
    Electronic ISSN: 2045-7758
    Topics: Biology
    Published by Wiley
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  • 5
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    Seismic pore pressure prediction at the Halten Terrace in the Norwegian Sea (2019)
    Geological Society of London
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    Publication Date: 2019
    Description: 〈span〉〈div〉Abstract〈/div〉Pre-drill pore pressure prediction is essential for safe and efficient drilling, and is a key element in the risk-reducing toolbox when designing a well. On the Norwegian Continental Shelf, pore pressure prediction commonly relies on traditional 1D offset well analysis, whereas velocity data from seismic surveys are often not considered. Our work with seismic interval velocities shows that the velocity field can provide an important basis for pressure prediction and enable the construction of regional 3D pressure cubes. This may increase the confidence in the pore pressure models and aid the pre-drill geohazard screening process. We demonstrate how a 3D velocity field can be converted to a 3D pore pressure cube using reported pressures in offset wells as calibration points. The method is applied to a regional dataset at the Halten Terrace in the Norwegian Sea; an area with a complex pattern of pore pressure anomalies which traditionally has been difficult to predict. The algorithm is searching for a velocity to pore pressure transform that best matches the reported pressures. The 3D velocity field is a proxy of rock velocity and is derived from seismic surveys, and is verified to checkshot velocities and sonic data in the offset wells.〈/span〉
    Print ISSN: 1354-0793
    Electronic ISSN: 2041-496X
    Topics: Geosciences
    Published by Geological Society of London
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  • 6
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    Disturbance-modulated symbioses in termitophily (2017)
    Wiley
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    Publication Date: 2017-11-11
    Description: Symbiosis, the living-together of unlike organisms, underlies every major transition in evolution and pervades most ecological dynamics. Among examples of symbioses, the simultaneous occupation of a termite nest by its builder termites and intruding invertebrate species (so-called termitophily) provides suitable macroscopic scenarios for the study of species coexistence in confined environments. Current evidence on termitophily abounds for dynamics occurring at the interindividual level within the termitarium, but is insufficient for broader scales such as the community and the landscape. Here, we inspect the effects of abiotic disturbance on termitophile presence and function in termitaria at these broader scales. To do so, we censused the termitophile communities inhabiting 30 termitaria of distinct volumes which had been exposed to increasing degrees of fire-induced disturbance in a savanna-like ecosystem in southeastern Brazil. We provide evidence that such an abiotic disturbance can ease the living-together of termitophiles and termites. Putative processes facilitating these symbioses, however, varied according to the invader. For nonsocial invaders, disturbance seemed to boost coexistence with termites via the habitat amelioration that termitaria provided under wildfire, as suggested by the positive correlation between disturbance degree and termitophile abundance and richness. As for social invaders (ants), disturbance seemed to enhance associational defenses with termites, as suggested by the negative correlation between the presence of ant colonies and the richness and abundance of other termitarium-cohabiting termitophiles. It is then apparent that disturbance-modulated distinct symbioses in these termite nests. Fire-induced disturbance boosted coexistence of termites and non-social termitophiles via the habitat amelioration that termitaria provided under wildfire. Simultaneously, harsh conditions enhanced termitaria defense by social termitophiles (ants).
    Electronic ISSN: 2045-7758
    Topics: Biology
    Published by Wiley
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  • 7
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    Mathematics, Vol. 7, Pages 1125: Stability of the Apollonius Type Additive Functional Equation in Modular Spaces and Fuzzy Banach Spaces (2019)
    MDPI
    Details
    Publication Date: 2019
    Description: In this work, we investigate the generalized Hyers-Ulam stability of the Apollonius type additive functional equation in modular spaces with or without Δ 2 -conditions. We study the same problem in fuzzy Banach spaces and β -homogeneous Banach spaces. We show the hyperstability of the functional equation associated with the Jordan triple product in fuzzy Banach algebras. The obtained results can be applied to differential and integral equations with kernels of non-power types.
    Electronic ISSN: 2227-7390
    Topics: Mathematics
    Published by MDPI
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  • 8
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    Stability of the Fréchet Equation in Quasi-Banach Spaces (2020)
    Molecular Diversity Preservation International
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    Publication Date: 2020-04-01
    Description: We investigate the Hyers–Ulam stability of the well-known Fréchet functional equation that comes from a characterization of inner product spaces. We also show its hyperstability on a restricted domain. We work in the framework of quasi-Banach spaces. In the proof, a fixed point theorem due to Dung and Hang, which is an extension of a fixed point theorem in Banach spaces, plays a main role.
    Electronic ISSN: 2227-7390
    Topics: Mathematics
    Published by Molecular Diversity Preservation International
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  • 9
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    Arsenite induces oxidative stress and caspase 3-mediated apoptosis in human neuroblastoma cells involving p53 (2009)
    BioMed Central
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    Publication Date: 2009-02-26
    Electronic ISSN: 1478-811X
    Topics: Biology , Medicine
    Published by BioMed Central
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  • 10
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    Measuring Patent Value Indicators with Patent Renewal Information (2020)
    Molecular Diversity Preservation International
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    Publication Date: 2020-03-02
    Description: This paper attempts to fill a research gap of literature by constructing the dynamic model into which both ex ante and ex post patent value indicators are incorporated. A patent renewal model is tested using a large set of Pharmaceutical patents granted by the European Patent Office between 1996 and 2009. We test five ex ante indicators and single ex post indicator including family size, patent backward citations, backward references to non-patent literature, number of claims, number of inventors, renewal fee, patent age, application year, and the ex post indicator forward citations. Empirical findings show that three citation related indicators, family size, and the number of claims are positively associated with patent values, while the number of inventors, renewal fee, patent age, and application year are negatively correlated. In addition, forward citations seem to have persistent learning effects on patent values.
    Electronic ISSN: 2199-8531
    Topics: Economics
    Published by Molecular Diversity Preservation International
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