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  • 1
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    Analysis of 20-year terrestrial gravity and ground deformation changes collected at Mt. Etna: Comparison with satellite data (2023)
    In:  XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
    Details
    Publication Date: 2023-07-11
    Description: We present a preliminary comparison between satellite and terrestrial gravity and GNSS data collected in a twenty-year period (2002-2022) at Mt. Etna volcano, with the aim of investigating the capabilities of this integrated approach to study the dynamics of volcanic phenomena over time-scales of months to years. The terrestrial gravity data were collected through absolute and relative spring gravimeters in the framework of almost monthly campaigns. Instead, GNSS measurements are continuously collected for monitoring purposes. Regarding satellite data, we used the Gravity Recovery and Climate Experiment (GRACE) data and GRACE Follow-On L3 solutions, that can provide high-quality information about mass distribution at regional and global scales in a long-term interval. After being corrected for the known effects, reduced terrestrial gravity and GNSS height variations were compared with satellite data. The comparison reveals long-term correlations between the analyzed time series which could represent volcano-scale variations.
    Language: English
    Type: info:eu-repo/semantics/conferenceObject
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  • 2
    Electronic Resource
    Electronic Resource
    Magnetic particle–particle interaction in frozen magnetic fluids (1996)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 79 (1996), S. 7931-7935 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Magnetic resonance is used to study magnetic dipole particle–particle interaction in ionic water-based iron-manganese magnetic fluids. A set of six samples having particle concentration running from 1.2×1016 to 6.3×1016 particles/cm3 were frozen below room temperature and analyzed in the range of 100–250 K. Average values of magnetic particle–particle interaction energy were obtained from the temperature dependence of the resonance linewidth broadening. At 1.2×1016 particles/cm3 magnetic particle–particle interaction energy is found to be of the order of 1.2 meV. However, at 6.3×1016 particles/cm3 magnetic particle–particle interaction energy goes to 32 meV. The enhancement of the magnetic particle–particle interaction energy far beyond the linearity is associated to cluster structuration. A one-dimensional model for cluster structuration is presented. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.362407
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  • 3
    Electronic Resource
    Electronic Resource
    Effect of Selection for Chip Colour on Some Economic Traits of Potatoes (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 113 (1994), S. 0 
    Details
    ISSN: 1439-0523
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: The objective of this study was to investigate the effects of selection for chip colour after harvest (CH), after storage at 12. 8°C (OR), and after storage at 3°C (GO) on maturity, yield, tuber size and specific gravity. Three hybrid populations of random clones were used in this study. The parents plus seven other cultivars were also evaluated, as checks. Experiments were carried out at Benton Ridge and at Fredericton, NB, in 1991. The experimental design was an augmented block. Clones of populations were non-replicated and distributed randomly in the experiment. Check cultivars were replicated four times in a randomized complete block design. Negative responses were predicted for maturity, marketable and total yield, and tuber size (agronomic traits) and positive response for specific gravity in varying amounts for the three populations by selection for the three chip quality traits (CH, CR and CC). Therefore, selection for CH, CR and CC and the agronomic traits could not be made without some adverse effects on each other, whereas chip quality traits and specific gravity could be improved simultaneously.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1439-0523.1994.tb00741.x
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  • 4
    Electronic Resource
    Electronic Resource
    Genetic polymorphism of adenosine deaminase (ADA; E.C. 3.5.4.4.) in allis shad, Alosa alosa and twaite shad, Alosa fallax (1993)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 43 (1993), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: A genetic polymorphism of adenosine deaminase (ADA), is described for the first time in European shad species, Alosa alosa and Alosa fallax. Significant heterogeneity in gene frequencies was found, both between species and within species.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1095-8649.1993.tb01172.x
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  • 5
    Electronic Resource
    Electronic Resource
    Influence of intralaminar cracking on the apparent interlaminar mode I fracture toughness of cross-ply laminates (2004)
    PO Box 1354, 9600 Garsington Road, Oxford OX4 2XG, UK. : Blackwell Science Ltd
    Fatigue & fracture of engineering materials & structures 27 (2004), S. 0 
    Details
    ISSN: 1460-2695
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: One of the major difficulties in interlaminar fracture tests of multidirectional laminates is the high tendency for intralaminar cracking and the resulting wavy crack propagation. Experimental work showed that this occurred in double cantilever beam (DCB) tests of cross-ply laminates having a starter crack on a 0°/90° interface. Moreover, under steady-state propagation conditions, the apparent values of the critical strain energy release rate GIc were two times higher than those of 0°/0° specimens. In this paper, a finite-element-based progressive damage model was used to simulate crack propagation in cross-ply specimens. The results showed that transverse cracking alone cannot be responsible for the above difference of GIc values. Therefore, the higher propagation GIc values for cross-plies must be attributed to the more extensive fibre bridging observed and to plastic deformations of the 90° interfacial ply.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1460-2695.2004.00739.x
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  • 6
    Electronic Resource
    Electronic Resource
    Framework for surface water quality management on a river basin scale: Case study of Lake Iseo, Northern Italy (2001)
    Melbourne, Australia : Blackwell Science Asia Pty. Ltd.
    Lakes & reservoirs 6 (2001), S. 0 
    Details
    ISSN: 1440-1770
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geography
    Notes: River (DESERT) and lake (EVOLA) water quality models are used to simulate the influences of alternative water quality management scenarios on the quality of receiving surface waters in the Lake Iseo basin, Northern Italy. The scenarios are representative of the European Union Directive on Urban Waste Water Treatment (91/271/EEC) and of the regional authority’s objective to reduce the total phosphorus loads from point sources entering Lake Iseo and to restore the lake as close as it is practically possible to its former natural qualitative state. Application of DESERT shows that the regional ‘Water Clean Up Plan’ can achieve similar reductions in total phosphorus concentrations in the basin’s main river system, Oglio River, to the 91/271/EEC directive, but at notably lower economic costs. Application of EVOLA to Lake Iseo shows that it is not practical to achieve the regional authority’s objective of a specific total phosphorus concentration in the lake by 2016. Instead, the results show that a more realistic, but higher, total phosphorus concentration can be achieved by 2016. The results of both modelling exercises indicate the usefulness of DESERT and EVOLA for comparing and assessing water quality management scenarios and for revising the regional authority’s final objectives with regards to total phosphorus concentration in Lake Iseo, as well as the regional ‘Water Clean Up Plan’ for restoring and safeguarding the quality of the basin’s surface waters.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1440-1770.2001.00137.x
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  • 7
    Electronic Resource
    Electronic Resource
    Comparative Kinetics of Arginine and Lysine Transport by Epimastigotes and Trypomastigotes from Two Strains of Trypanosoma cruzi (1976)
    Oxford, UK : Blackwell Publishing Ltd
    The @journal of eukaryotic microbiology 23 (1976), S. 0 
    Details
    ISSN: 1550-7408
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: SYNOPSIS. Three-day-old cultures of Y and MR strains of Trypanosoma cruzi had a higher rate of lysine and arginine uptake than 10-day cultures. Amino acid uptake by cells of the MR strain was consistently higher than that of the Y strain.Flagellates separated on DEAE-cellulose columns have normal structure, motility, and infectivity; they have higher rates of lysine and arginine uptake than the original 3- and 10-day cultures. In addition, passage through DEAE-cellulose columns modified the kinetic behavior of amino acid transport systems in the flagellate membranes.Methionine inhibited uncompetitively uptake of lysine and arginine by MR and Y strains. Lysine inhibited arginine uptake by both strains by an uncompetitive mechanism. Lysine, however, inhibited the uptake of arginine by 10-day culture cells of the Y strain by a mixed-type of inhibition. Arginine also inhibited the lysine uptake of both strains by an uncompetitive mechanism. In all experiments, beyond a certain level, a further increase in inhibitor concentration resulted in a decreased inhibition, which eventually disappeared altogether. Inhibition of amino-acid uptake by any of the substances tested was not observed after passage of flagellates through a DEAE-cellulose column.A model for amino acid transport was formulated which includes a recognition site amenable to modulation by effectors.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1550-7408.1976.tb05267.x
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  • 8
    Electronic Resource
    Electronic Resource
    Discovery of hardest known oxide (1996)
    [s.l.] : Nature Publishing Group
    Nature 383 (1996), S. 401-401 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR á€" Microhardness measurements on synthesized samples of stishovite, a high-pressure phase of silica, show that it is the hardest oxide yet discovered. Among polycrystalline materials, its hardness (33 gigapascals, GPa) rivals those of the hardest materials. Despite many ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/383401a0
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  • 9
    Electronic Resource
    Electronic Resource
    A model for decomposition of the drown vegetation in an Amazonian reservoir
    Amsterdam : Elsevier
    Ecological Modelling 75-76 (1994), S. 447-458 
    Details
    ISSN: 0304-3800
    Keywords: Decomposition ; Oxygen ; Reservoirs
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0304-3800(94)90039-6
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  • 10
    Electronic Resource
    Electronic Resource
    Mesoionic compounds. 1. Structure of 5-methyl-2-piperidino-1,3-dithiolium-4-thiolate (1991)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 47 (1991), S. 2630-2632 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108270191007692
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