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Abstract

Quaternary paleoclimatic signals from the Levant have been frequently correlated with the most widely used stratigraphic divisions of high latitudes. In this article, relevant data, underlying concepts and new information are critically reviewed to highlight sources of uncertainty. Comparison between four sites from the Bekaa Valley demonstrate the problem of correlations and paleoenvironmental diversity of the region.
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Authors and Affiliations

Abdul Sahib A. Lateef
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Abstract

The Lidfjellet thrust is the most prominent tectonic structure in the Lidfjellet-Řyrlandsodden fold zone, which stretches NNW-SSE along the western coast of Sřrkapp Land in Spitsbergen. This paper provides a reinterpretation of the Lidfjellet structure, with particular reference to lithostratigraphy of the autochthonous and overthrust sequences involved, and to the position of the thrust surface. Geological and palynologicalal data indicate that the sequence attributed previously to the Lower Cretaceous Helvetiafjellet Formation of the autochthonous cover represents in fact the Carboniferous (Viséan) Sergeijevfjellet Formation forming the lower part of the overthrust unit. The youngest deposits involved in tectonic structures of the Lidfjellet-Řyrlandsodden fold zone are of Upper Jurassic age.

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Authors and Affiliations

Krzysztof P. Krajewski
Marzena Stempień-Sałek
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Abstract

Due to the changing social and program expectations teachers more often look for new and better solutions in the field of education and teaching. Among many teaching methods, the storyline method is a very popular one and is gaining now more and more recognition from pedagogues around the world. The method starts to have its supporters in Poland as well. This article will be devoted to the description of this innovative strategy.

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Authors and Affiliations

Agnieszka Kosek
Monika Kowalska
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Abstract

The article outlines legal characteristics marine insurance contract under Polish law. Marine insurance is a codified contract, governed expressly by Title VIII of the Polish Maritime Code. It is concluded by mere consent of the parties (consensual contract), it is bilateral, aleatory and it entails consideration in money. Its main characteristic is the requirement of utmost good faith (uberrima fides). It is a standard form contract (contract of adhesion) and often operates in context of permanent contractual relationships.

The author notes, however, disagreements within academia as to aleatory natureof maritime insurance.

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Authors and Affiliations

Magdalena Adamowicz
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Abstract

In this paper the results of the thermodynamic analysis of the oxy-combustion type pulverized bed boiler integrated with a hybrid, membrane- cryogenic oxygen separation installation are presented. For the calculations a 600 MW boiler with live steam parameters at 31.1 MPa /654.9 oC and reheated steam at 6.15 MPa/672.4 oC was chosen. In this paper the hybrid membrane-cryogenic technology as oxygen production unit for pulverized bed boiler was proposed. Such an installation consists of a membrane module and two cryogenic distillation columns. Models of these installations were built in the Aspen software. The energy intensity of the oxygen production process in the hybrid system was compared with the cryogenic technology. The analysis of the influence of membrane surface area on the energy intensity of the process of air separation as well as the influence of oxygen concentration at the inlet to the cryogenic installation on the energy intensity of a hybrid unit was performed.
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Authors and Affiliations

Sylwia Berdowska
Anna Skorek-Osikowska
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Abstract

In this paper the authors present the test carried out to obtain the uniform velocity distribution at the outlet cross section of flow fan. In the investigations the inner flat vane mounted inside of the impeller has been applied. For various angular position of the inner vane, one obtained different flow structures as well as different velocity distributions. The analysis of the obtained results is presented in form of graphs shown in 10 figures, juxtaposing flow phenomena with velocity distributions. Numerical flow simulation with the use of Flo++ program based on the Finite Volume Method was carried out.

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Authors and Affiliations

Jolanta Stacharska-Targosz
Monika Chmielowiec
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Abstract

In multi-stage wire drawing machines productivity growth can be achieved at higher drawing speeds by preventing wire breakage during the process. One disadvantage of high-speed wire drawing is the requirement imposed by machine dynamics in terms of its stability and reliability during operation. Tensile forces in the wire must maintained by fast synchronization of all capstans speed. In this process, the displacement sensors play the main role in providing the control system with feedback information about the wire condition. In this study, the influences between the sensors and actuator driven capstans have been studied, and tuner roll concept of a wire drawing machine was experimentally investigated. To this aim, measurements were carried out on two drawing stages at different drawing speeds and obtained results were presented. These results clearly show the fast changes of the capstans speed and the angular displacements of the rollers that tighten the wire, which only confirms the high dynamics of the wire drawing machine.

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Authors and Affiliations

Goce Tasevski
Kocho Angjushev
Zlatko Petreski
Dejan Shishkovski

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