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Abstract

An effective method for the analysis of soil-structure interaction including the behaviour of cylindrical storage tank with varying wall thickness under the action of constant thermal loading is presented. Elastic half-space and the Winkler model have been used for the description of subsoil. The soil-structure interaction is described by using the power series. A computational example of reinforced concrete tank loaded with constant temperature is given. The analysis of a hydrostatically loaded cylindrical tank performed for the model incorporating elastic half-space shows decrease of radial displacements as well as substantial changes in the distribution of bending moments when compared to the Winkler foundation. Additionally, local increase of subsoil reaction around the slab circumference is observed for the case of elastic half-space, in contrast to the Winkler model. However, in the case of a tank loaded with constant temperature, the solutions for both subsoil models do not differ significantly.

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Authors and Affiliations

Paweł Marek Lewiński
Michał Rak
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Abstract

In this work we summarize the current knowledge on the spatial distribution, host specificity and genetic diversity of Onchobothrium antarcticum, an endemic Antarctic cestode. We recorded it in seven fish species, elasmobranchs Amblyraja georgiana, Bathyraja eatonii, and B. maccaini and teleosts Antimora rostrata, Chionobathyscus dewitti, Dissostichus mawsoni, and Muraenolepis marmorata, caught in the Ross Sea, the D’Urville Sea, the Mawson Sea, and the Weddell Sea. The infection of A. rostrata from the part of its distribution to the south of the Falkland Islands is reported for the first time. We obtained partial 28S rDNA and cox1 sequences of plerocercoids and adults of O. antarcticum and analyzed them together with a few previously published sequences. Based on the results of the phylogenetic analysis, we cannot rule out that O. antarcticum is in fact a complex of cryptic species.
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Authors and Affiliations

Ilya I. Gordeev
1 2
ORCID: ORCID
Tatyana A. Polyakova
3
ORCID: ORCID
Alexander A. Volkov
4
ORCID: ORCID

  1. Department of Invertebrate Zoology, Faculty of Biology, Lomonosov Moscow State University, Leninskie Gory 1/12, 119234, Moscow, Russia
  2. Department of Pacific Salmons, Russian Federal Research Institute of Fisheries and Oceanography, V. Krasnoselskaya Str. 17, 107140, Moscow, Russia
  3. Moscow representative office of A.O. Kovalevsky Institute of Biology of the Southern Seas of RAS, Leninsky Pr. 38/3, 119991, Moscow, Russia
  4. Department of Molecular Genetics, Russian Federal Research Institute of Fisheries and Oceanography, V. Krasnoselskaya Str. 17, 107140, Moscow, Russia
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Abstract

During the 2004 summer season, 14 sediment samples were collected in Kongsfjorden and Isfjorden, West Spitsbergen, from 6 down to 345 m water-depth (mwd). The samples yielded abundant assemblage of monothalamous foraminifera, belonging to almost 40 morphotypes. Our qualitative (>125 um) and quantitative data (125-500 um) allowed to distinguish three water-depth related assemblages in both Kongsfjorden and Adventfjorden (branch of Isfjorden), indicating that soft-walled monothalamous foraminifera show similar habitat gradation along fjord axis as calcareous and robust agglutinated taxa. Among the monothalamous foraminifera, the subtidal assemblage (6 mwd) was dominated by various unidentified allogromiids. The second, shallow-water assemblage (44-110 mwd) was dominated by Psammophaga sp. 1-3, Hippocrepinella crassa, Hippocrepinella cf. hirudinea, and large Gloiogullmia sp. 2. The deep-water (150-345 mwd) monothalamous assemblage was dominated by Psammophaga sp. 4, pear-shaped Hippocrepina sp., Hippocrepina indivisa, and long Cylindrogullmia sp. 2, as well as large agglutinated species Hyperammina subnodosa with attached Tholosina bulla, Hyperammina fragilis and Lagenammina sp.

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Authors and Affiliations

Wojciech Majewski
Jan Pawłowski
Marek Zajączkowski
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Abstract

The paper encompasses the overview of hardware architecture and the systems characteristics of the Fraunhofer driving simulator. First, the requirements of the real-time model and the real-time calculation hardware are defined and discussed in detail. Aspects like transport delay and the parallel computation of complex real-time models are presented. In addition, the interfacing of the models with the simulator system is shown. Two simulator driving tests, including a fully interactive rough terrain driving with a wheeled excavator and a test drive with a passenger car, are set to demonstrate system characteristics. Furthermore, the simulator characteristics of practical significance, such as simulator response time delay, simulator acceleration signal bandwidth obtained from artificial excitation and from the simulator driving test, will be presented and discussed.

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Authors and Affiliations

Michael Kleer
Andrey Gizatullin
Klaus Dreßler
Steffen Müller

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