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441.
The paper summarizes the findings about a seismic event on January 22, 2010, near Bełchatów, Poland, in terms of data, event
location, magnitude and source parameters. 相似文献
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W. Prószyński 《Journal of Geodesy》2010,84(9):547-556
An approach to internal reliability analysis is presented which, compared to existing approaches, offers further insight into
the system responses to observation gross errors. The proposed reliability measures are defined on the diagonal and non-diagonal
elements of the modified reliability matrix being an oblique projector. It maps the observations into the least squares residuals,
both expressed as multiples of the a priori standard deviations of the observations. The system responses to a single gross
error, such as the local, the quasi-global or the global response, are discussed and their consistency with non-correlation
case is proved. Also, the reliability criteria interpretable in terms of those responses are proposed. They enable one to
evaluate the observation systems with correlated and uncorrelated observations with respect to internal reliability. An attempt
is also made to relate the global responses to reliability numbers that are the basis for determining the magnitude of the
minimal detectable bias. Some differences of the new reliability measures in relation to existing measures are indicated.
A numerical example is provided, showing the reliability analysis for a simulated horizontal network (distances, angles and
GPS vectors), with given covariance matrix for GPS-vector components. In addition, a reliability analysis is presented for
a simple leveling network being a study case for other authors referred to in this paper. 相似文献
445.
At the beginning of August 1997, 72 samples of flood sediments were taken along the Upper and Middle Odra river and its tributaries. The concentrations of Zn, Pb, Cu, Cd, Co, Ni, Cr, Mn, and Fe in the bulk samples and in the <20 μm fraction were determined by AAS method. The contents of metals vary in wide ranges and are significantly higher in the <20 μm fraction of sediments. The range concentrations vary as following: Zn 274...3 656 mg/kg, Pb 79...1 773 mg/kg, Cd 1.7...11.8 mg/kg, Cu 38...2 244 mg/kg, Cr 14...384 mg/kg, Co 4...73 mg/kg, Hg 0.2...3.9 mg/kg, Mn 214...6 972 mg/kg, and Fe 1.5...16.3 %. The highest amount of the metals was found in the Wrocław and Głogów regions. The mobile (exchangeable and carbonatic fractions) portions of metals reached up to 50 % of Zn, 40 % of Pb and Cu and 60 % of Mn. 相似文献
446.
Mineralogy and Petrology - The results of the new Electron Microprobe Analysis of apatite, hornblende and biotite crystals of the hornblende-biotite variety of the Strzegom-Sobótka granite... 相似文献
447.
Tong Bao Xuesong Zhang Katarzyna S. Walczyńska Bo Wang Jes Rust 《Proceedings of the Geologists' Association. Geologists' Association》2019,130(2):247-256
Within this study the subfamily Praemordellinae is reviewed and the holotype of Praemordella martynovi Scegoleva-Barovskaja, 1929 is re-described. The genera Cretanaspis Huang and Yang, 1999, Mirimordella Liu et al., 2007, Bellimordella Liu et al., 2008 and Wuhua Wang and Zhang, 2011 is attributed to Praemordellinae. One new species, Wuhua peregrina sp. nov., is erected based on two well-preserved specimens from the Middle Jurassic Daohugou Biota (Inner Mongolia, China). The morphological characters of Praemordellinae are given and a key to genera of Praemordellinae is presented. Praemordellinae is closely related to extant Mordellidae in having humpbacked body, strongly deflexed head, filiform antennae and pectinate tarsal claws, but it is differing in that the pygidium absent and hind femora not well developed. It is also similar to Ripiphoridae in having a convex body and simple tarsi, but differs Ripiphoridae in having filiform antennae. Praemordellinae is probably a stem group including the ancestor of Mordellidae and Ripiphoridae. Also, within this paper, the fossil record of Mordellidae is summarized. 相似文献
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Sylwia Tomecka-Suchoń 《Acta Geophysica》2012,60(2):386-398
Georadar methodology has a considerable potential as a tool for verification of archeological hypotheses. I applied it in
the present study to resolve a discussion on the importance of a Proto-Romanesque structure located on Lasota Hill. It is
one of the oldest structures on the right bank of Vistula River in Kraków in Poland and some archeologists believe that it
was the first seat of the rulers of Lesser Poland in the 9th century. After few decades, the prince’s castle was built on
Wawel Hill, where subsequently the royal castle was constructed. On the place of the abandoned Proto-Romanesque edifice, a
small St. Benedict’s Church was raised, but the importance of its predecessor was discussed. Archeological excavations suggested
that it served as the prince’s residence, but this view would be much strengthened if traces of a prince’s building — palatium — could be found. With this in mind, I undertook a search for traces of palatium, employing georadar methodology. I carried out the measurements using Georadar PROEX produced by MALA Geoscience with a set
of shielded antennas of frequencies 500 and 800 MHz. They permitted to construct echogram profiles, whose interpretation suggested
the existence of palatium. Thus, the georadar data supported the archeological hypothesis about the important role of the Proto-Romanesque structures
on Lasota Hill in the early medieval era in Poland, and at the same time demonstrated the usefulness of introducing geophysical
methods to archaeology. 相似文献