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1

Comparative analysis of oil separators used in merchant fleets and on oil drilling rigs

100%
Kirkiewicz J.
Oceanological Studies
|
1994
|
issue 66/7
167-174
EN
The main causes of seawater contamination with oil are given.For several types of oil separators thr ranges of their effective operation in relation to the particle (drop) size are presented.On the basis of autor's own research and the investigation of oil separating equipment used so far, the systems of oil separation for small and large vessels are suggested.
2

A study of the effec of the Oder estuary on contamination of the Baltic waters with oil

100%
Kirkiewicz J.
Oceanological Studies
|
1994
|
issue 66/7
157-166
EN
Basing on the literature, the sources of the contamination of the Baltic Sea waters with oil are presented.The spectral method of measuring the content of pertoleum products in water is described.The autor also presents the effect of the Oder estuary on contamination of the Baltic with oil on the basis of his own research.
3
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Magnetization Processes in Dilute Metamagnets with Ferro- and Antiferromagnetic Exchange Interactions

63%
Pikuła R., Kirkiewicz J.
Acta Physica Polonica A
|
2006
|
vol. 110
|
issue 1
25-39
EN
Using the Green function method there has been presented the mathematical description of dilute two sub-lattice metamagnets with ferro- and antiferromagnetic exchange interactions. The Green function averaging procedure is based on the Cumulant Expansion Technique and includes any localized Green function irrespectively of the decoupling algorithm making the chain system of equations self-consistent. The derived form of the averaged Green function is the base for the analysis of magnetization processes and phase transitions occurring in the system under the influence of external magnetic field. It has been found in particular that the tricritical point and the second-order phase transition vanish when concentrations of magnetic atoms coupled with different sub-lattice points become different.
4
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A Dilute Magnet with Ferro- and Antiferromagnetic Exchange Interactions. The Structural Fluctuations Analysis

63%
Pikuła R., Kirkiewicz J.
Acta Physica Polonica A
|
2008
|
vol. 113
|
issue 2
669-676
EN
We analysed the influence of the fluctuations in distribution of magnetic atoms on the properties of dilute magnets with mixed ferro- and antiferromagnetic exchange interactions. The high- and low concentration approximations were found to give very close results and the most important impact on the physical quantities origins from the lowest, square fluctuations which play the predominant role in the whole range of concentrations of magnetic atoms.
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