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  • 2020-2024  (5)
  • 1990-1994  (137)
  • 1945-1949  (3)
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  • 1
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    Unknown
    Reconstruction of past storminess and storm track position, evidence from Pedrido Bog, Galicia, Spain (2021)
    PANGAEA
    Details
    Publication Date: 2023-01-30
    Description: Over annual to decadal timescales changes in the storm track influences regional climate in Europe, however little is known about how the storm track varies over centennial and millennial timescales. We here present two datasets. The first is a reconstruction of storminess from northwest Spain spanning the period 4600-0 cal yrs BP, which was developed by measuring aeolian sand deposits in a peat core from Pedrido Bog, Galicia, Spain. Samples of equal volume (5 cm3) from 1 cm contiguous intervals along the core were processed using the loss-on-ignition method (Heiri et al. 2001), leaving the ignition residue, which was sieved to establish the weight of the 120-180 and 〉180 micron sand fractions. The ignition residue and sand fractions reflect the past amount of sand deposition, which can be used as proxies for storminess. The second dataset is a North-South storm track index reconstruction for western Europe spanning the period 3940-120 cal yrs BP. To create the storm track index, the above described storminess record from Spain was subtracted from a storminess record from Scotland, derived by averaging the results of two storminess reconstructions from the Outer Hebrides, Scotland (Orme et al., 2016). Each record was sampled to the same 20 year temporal resolution and standardised prior to this.
    Keywords: Europe; Holocene; North Atlantic Oscillation; storminess; storm track
    Type: Dataset
    Format: application/zip, 2 datasets
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    DATA PANGAEA
  • 2
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    Unknown
    Sand-based storminess proxies from Pedrido Bog, Galicia, Spain (2021)
    PANGAEA
    Details
    Publication Date: 2023-02-07
    Description: Over annual to decadal timescales changes in the storm track influences regional climate in Europe, however little is known about how the storm track varies over centennial and millennial timescales. We here present two datasets. The first is a reconstruction of storminess from northwest Spain spanning the period 4600-0 cal yrs BP, which was developed by measuring aeolian sand deposits in a peat core from Pedrido Bog, Galicia, Spain. Samples of equal volume (5 cm3) from 1 cm contiguous intervals along the core were processed using the loss-on-ignition method (Heiri et al. 2001), leaving the ignition residue, which was sieved to establish the weight of the 120-180 and 〉180 micron sand fractions. The ignition residue and sand fractions reflect the past amount of sand deposition, which can be used as proxies for storminess. The second dataset is a North-South storm track index reconstruction for western Europe spanning the period 3940-120 cal yrs BP. To create the storm track index, the above described storminess record from Spain was subtracted from a storminess record from Scotland, derived by averaging the results of two storminess reconstructions from the Outer Hebrides, Scotland (Orme et al., 2016). Each record was sampled to the same 20 year temporal resolution and standardised prior to this.
    Keywords: After Heiri et al., (2001); AGE; Density, organic matter; DEPTH, sediment/rock; Europe; Grain size, sieving; Holocene; Ignition residue; North Atlantic Oscillation; PEATC; Peat corer; Pedrido_Bog; Size fraction 〉 0.180 mm; Size fraction 0.18-0.12 mm; Spain; storminess; storm track
    Type: Dataset
    Format: text/tab-separated-values, 968 data points
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    DATA PANGAEA
  • 3
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    Unknown
    North-south storm track index reconstruction for western Europe from Pedrido Bog, Galicia, Spain (2021)
    PANGAEA
    Details
    Publication Date: 2023-02-07
    Description: To create the storm track index, the above described storminess record from Spain was subtracted from a storminess record from Scotland, derived by averaging the results of two storminess reconstructions from the Outer Hebrides, Scotland (Orme et al., 2016). Each record was sampled to the same 20 year temporal resolution and standardised prior to this.
    Keywords: DEPTH, sediment/rock; Europe; Hill_Top_Bog; Holocene; North Atlantic Oscillation; North-south storm track index; Outer Hebrides, Scotland; PEATC; Peat corer; Pedrido_Bog; Spain; storminess; storm track; STR; Struban_Bog
    Type: Dataset
    Format: text/tab-separated-values, 192 data points
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    DATA PANGAEA
  • 4
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    Chapter On the utility of treating a vineyard against Plasmopara viticola: a Bayesian analysis (2023)
    Firenze University Press, Genova University Press | ASA 2022 Data-Driven Decision Making
    Details
    Publication Date: 2023-08-08
    Description: Plasmopara viticola is the causal agent of the downy mildew, the most severe disease of grapevines. In order to prevent and/or mitigate the plant disease, fungicide treatments are often required, despite the presence of side effects on the environment and the potential hazard for human health in case of prolonged exposition. The choice of proper treatments and optimal scheduling is the key to managing downy mildew in an eco-friendly way. Plasmopara viticola’s growth depends on meteorological variables, like temperature and rain, plant’s genotype, the degree of exposition to oospores and soil conditions. Field measurements are expensive both for the high cost of oospore sensors and for the need of meteorological sensors describing the microclimate around each plant. Whatever the amount of information gathered from sensors of a vineyard, a decision must be taken, e.g. according to the predicted probability of infected leaves (and grapes) and considering side effects like the impact of a chemical treatment on the soil and on biodiversity. A multi-attribute utility function on variables describing future consequences of a decision may be defined by following the assumptions of utility independence and preferential independence. The inherent uncertainty is described by a Bayesian prior-predictive distribution where prior are elicited from experts, and eventually updated using available data. The resulting optimal decision is defined as the argument that maximises the expected value of the utility function. The proposed utility function may be tuned to match the individual preference scheme of the winegrower and eventually extended to include further variables like those describing the quality and yield of grapes.
    Keywords: Optimal decision ; Precision agriculture ; Phytopathogen ; Sustainability ; bic Book Industry Communication::J Society & social sciences
    Language: English
    Format: image/png
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    E-BOOK
  • 5
    Electronic Resource
    Electronic Resource
    Cytogenetic and DNA Repair Studies in a Patient Affected by the Neonatal Progeroid Syndrome (1992)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 663 (1992), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1992.tb38688.x
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    The speed of consumption of prothrombin and of inactivation of thrombin in human native plasma (1949)
    Springer
    Cellular and molecular life sciences 5 (1949), S. 330-331 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Zusammenfassung Mit neuartigen Methoden wurde die Geschwindigkeit untersucht, mit der das Prothrombin verbraucht und das Thrombin nach Beedigung der Gerinnung frischen menschlichen Plasmas inaktiviert wird. Die Geschwindigkeit des « Prothrombinverbrauchs » hängt von der Zahl der vorhandenen Blutplättchen ab. Sie wächst kritisch bei optimaler Blutplättchenzahl zwischen der 8. und 14. Minute nach Beendigung der Gerinnung. Die Inaktivierung des während der Gerinnung gebildeten Thrombins wird nur sehr wenig von den im Plasma verbliebenen Plättchen beeinflußt. Sie geht rasch in den ersten 15 Minuten nach Beendigung der Gerinnung vor sich. Bei krankhaften Zuständen zeigt die Thrombininaktivierungskurve Veränderungen, die vielleicht diagnostisch bei der thrombotischen Diathese nützlich sein könnten. Die Resultate des Prothrombinverbrauchtests werden durch das restliche Thrombin des Serums nicht beeinflußt, wenn die Bestimmung 30 bis 60 Minuten nach Beendigung der Gerinnung vorgenommen wird.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02172644
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  • 7
    Electronic Resource
    Electronic Resource
    Appraisal and optimization of agricultural water use in large irrigation schemes: I. Theory (1992)
    Springer
    Water resources management 6 (1992), S. 185-199 
    Details
    ISSN: 1573-1650
    Keywords: Irrigation ; mathematical model ; path efficiency ; percolation ; water flow ; water extraction ; water supply
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Notes: Abstract A new approach on the functioning of an irrigation scheme has been presented. A mathematical representation of the irrigation system based on measured system properties, such as losses due to percolation and to poor management, in only a part of the system is used. This mathematical representation is termed an equivalent irrigation network. The merit of this approach is that it reduces the number of required streamflow measurements. When water amounts are measured for a number of paths in the irrigation network, so-called path efficiencies are obtained. The path efficiency is a measure of the amount of water lost along the way. The numerical model that simulates the operation of the irrigation system is based on the path efficiencies. This simulation model in turn is used to calculate different objective functions, corresponding with different optimization goals, like uniform water distribution, minimum groundwater extraction, minimum cost of water supply. This paper gives the theoretical background of the approach. The application to an actual irrigation scheme will be discussed in a second paper.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00872355
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  • 8
    Electronic Resource
    Electronic Resource
    Appraisal and optimization of agricultural water use in large irrigation schemes: II. Applications (1992)
    Springer
    Water resources management 6 (1992), S. 201-221 
    Details
    ISSN: 1573-1650
    Keywords: Argentina ; groundwater ; irrigation ; simulation model ; surface water ; water use
    Source: Springer Online Journal Archives 1860-2000
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Notes: Abstract In this paper, the theoretical approach presented in Part I is demonstrated by means of case studies on the irrigation schemes of Rio Mendoza and Rio Tunuyán in the Province of Mendoza, Argentina. The object of the case studies was the determination of optimal allocation of surface water to reduce the use of groundwater. Current and optimal conjunctive allocation of ground and surface water is studied by means of the developed simulation and optimization models. The second case study was designed on the basis of the experience gathered during the first one: each step of the case studies is compared. The comparison between the two case studies illustrates how to apply the proposed approach when the amount and quality of available data are different. For the more detailed Rio Tunuyán study, we determined the following physical characteristics of all terminal nodes: on-farm rotational intervals, mean water application depth, actual soil water storage capacity, crop water requirements, depth of groundwater table, aquifer transmissivity, and efficiency of groundwater use. The performance of the entire system is sensitive to changes in the water application depth, as it was shown by a simulation study. The application of our optimization approach to the conjunctive use of ground- and surface water showed that the total water requirements over a year can be met by a reassignment of water that reduces the total costs of a great amount.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00872356
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  • 9
    Electronic Resource
    Electronic Resource
    Study of superdeformed bands in nuclei withA ∼ 150 by heavy-ion-γ coincidences (1992)
    Springer
    The European physical journal 341 (1992), S. 131-136 
    Details
    ISSN: 1434-601X
    Keywords: 21.10.-k ; 25.70.Gh
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Superdeformed (SD) bands in152Dy,151Dy and151Tb have been populated via the 5n, 6n and 5np evaporation channels, respectively, with the33S+124Sn reaction at 160 and 170 MeV bombarding energies. Population intensities are in good agreement with existing data for SD bands in151, 152Dy and SD yrast band in151Tb. The excited “twin” SD band in151Tb with the sameγ-transitions as the band in152Dy is populated about 5 times more strongly than by the 6n evaporation channel. This might be explained in terms of competition between proton andγ emission out of an intermediate, excited superdeformed configuration of152Dy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01298472
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  • 10
    Electronic Resource
    Electronic Resource
    Near-barrier transfer and fusion of the systems33S +90,91,92Zr (1990)
    Springer
    The European physical journal 335 (1990), S. 55-72 
    Details
    ISSN: 1434-601X
    Keywords: 25.70.Cd ; 25.70. Jj
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Double differential cross sections of all prominent transfer channels have been measured in the systems33S +99,91,92Zr at two energies close to the nominal Coulomb barrier. In addition the fusion excitation functions of these systems have been measured below and around the barrier. The angular- andQ-distributions of the most important transfer reactions have been analysed in the framework of a simple semiclassical formalism. Particularly the two-nucleon transfer angular distributions exhibit strong multi step coupling effects which manifest themselves in reduced cross sections at large angles corresponding to close distances. From the angular distributions at forward angles, where a single step character of the transfer reaction can be assumed, approximate form factors have been extracted employing a first order perturbation theory. Within the uncertainties of a schematic coupled channels calculation the isotopic differences of the sub-barrier fusion enhancement can be understood on the basis of the isotopic differences of the transfer form factors andQ-values.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01289348
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