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121.
Jacek Andrzej Urbanski 《International journal of geographical information science》2013,27(7):723-730
This paper advocates the use of GIS for the evaluation of the vulnerability of coastal waters and presents a method for mapping their vulnerability to algal blooms. The method incorporates probability mapping of parameters used to describe coastal waters and fuzzy sets. To allow the modelling of processes where some components cannot substitute for other components the 'no trade off' convex combination formula is proposed. The maps of vulnerability for the Gulf of Gdansk, which were created using this method, may be used to find out which rivers and water discharges play a dominant role in eutrophication. 相似文献
122.
Andrzej J. Maciejewski 《Celestial Mechanics and Dynamical Astronomy》1985,37(1):47-57
The Euler-Poinsot equations of rigid body motion are considered. The Euler parameters attitude parametrization is assumed. The Hamiltonian form of these equations is obtained. Two different solutions are shown. A short discussion of free motion in this new treatment is also given. 相似文献
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Rybak-Ostrowska Barbara Konon Andrzej Domonik Andrzej Poszytek Anna Uroda Joanna 《International Journal of Earth Sciences》2017,106(6):1863-1888
International Journal of Earth Sciences - We investigated exhumed damage zones of dextral strike-slip faults dissecting the south-western part of the Mesozoic cover of the Late Palaeozoic Holy... 相似文献
125.
Ewa Słaby Michał Śmigielski Tomasz Śmigielski Andrzej Domonik Klaus Simon Andreas Kronz 《Contributions to Mineralogy and Petrology》2011,162(5):909-927
As has been demonstrated in recent years, the heterogeneities of coeval magmas can be more successfully revealed by zoned
megacrysts rather than by analysis of the whole rocks hosting them. Here, the geochemical heterogeneities of feldspar megacrysts
from the Karkonosze granite, Poland, are investigated by LA-ICP-MS. The crystals are the product of migration and growth in
regions of poorly mixed magmas. 3D-modeling of the Ba, Sr, and Rb distributions emphasizes the importance of micro-domain
growth morphologies. Two models of element behavior—a relative concentration model and a composition gradient model—provide
a potentially effective tool for tracking the mixing process on a microscale. Measured concentrations of elements of different
mobilities do not agree with what might be expected from the mixing of two end-member magmas. If mixing was the only process
occurring, linear correlations between the concentrations of any two elements should be observed; this, however, is not the
case. For combinations of any two of the three elements, modeling reveals differing non-linear correlations between concentrations.
The megacryst heterogeneities provide an insight into how mixing magmas are chaotically advected to growing crystals and the
degree of inter-magma element exchange between the magmas. 相似文献
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Andrzej Marciniak 《Celestial Mechanics and Dynamical Astronomy》1987,40(2):95-110
In the paper a modification of the polynomial extrapolation for solving the problem of motion nearby the equilibrium points is presented. It appears that the modification yields a better approximation of the exact solution than the convential polynomial extrapolation and other methods. Moreover, the modification conserves the Jacobi constant of motion. Computer examples for orbits nearby the equilibrium points of the Sun-Jupiter system are given. 相似文献
128.
Aleksandra Samecka-Cymerman Grzegorz Kosior Krzysztof Kolon Bronisław Wojtuń Krzysztof Zawadzki Andrzej Rudecki Alexander J. Kempers 《Journal of Atmospheric Chemistry》2013,70(2):105-114
This research is continuation of the investigation of metal accumulation in native and transplanted moss Pleurozium schreberi in the most industrialized and affected region in Poland (Upper Silesia). We tested the hypotheses that in Upper Silesia transplants of P. schreberi may be used in a 90 days bioindication experiment in case native specimens are absent; a 90 days exposure of transplanted P. schreberi was long enough for evaluation of Hg pollution of the environment. An assay was carried out with native mosses at 27 polluted sites and mosses from an uncontaminated control site transplanted to the same 27 polluted sites. P. schreberi collected from the same sites as classified for more and less polluted basing on Pb and Zn concentrations show quite different pattern of pollution with mercury; The accumulation of Hg by the transplants increased much faster in the first 45 days of the experiment (accumulation factor 1.5–6.7; mean 3.4?±?0.5) in comparison with the second period from day 45 to 90 (accumulation factor 1.0–1.6; mean 1.2?±?0.1). The 90 days exposure of transplanted P. schreberi was long enough for evaluation of Hg pollution of the environment. Transplants of P. schreberi may be used in a 90 days bioindication experiment in case native specimens are absent. 相似文献
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