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Sedimentary structure of the storm surge washover fan on the lake Bukowo spit

100%
Rudowski S., Wroblewski W. R., Wroblewski R.
Oceanological Studies
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2000
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vol. 29
|
issue 3
101-107
EN
A storm surge washover fan on the Lake Bukowo spit (kilometre 287.3 of the Polish Baltic coast) is described in detail. The in-depth examination of the fan relief and sedimentary facies allowed to identify two subfacies represented by the fan channel and the fan core. The importance of washover fan facies for the structure and development of sandy barriers as well as for shore sediment budget and shore protection is stressed.
2
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Anisotropy of the Magnetocaloric Effect in the Ni_{49.6}Mn_{27.6}Ga_{22.8} Single Crystal

100%
Wroblewski R., Sielicki K., Leonowicz M.
Acta Physica Polonica A
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2015
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vol. 128
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issue 1
54-55
EN
The magnetocaloric effect anisotropy in the Ni_{49.6}Mn_{27.6}Ga_{22.8} single crystal was investigated. In the examined alloy the structural phase transition and magnetic transition occur at room temperature and around 370 K, respectively. The magnetic entropy change, at those two temperatures, was determined on the basis of isothermal and isofield curves, recorded at fields up to 1200 kA/m (1.5 T) with temperature steps of 2.5 and 5 K. Although the calculated values of magnetic entropy change are relatively small, ≈0.7 J/(kg K), an anisotropy of the magnetocaloric effect is observed with a magnetic field applied along the main crystallographic directions of the single crystal. The magnetic entropy change at the structural phase transition depends on the orientation. The weakest magnetocaloric effect occurs when the field is applied along [1 0 0] direction whereas the highest magnetocaloric effect value is reached along [0 0 1] direction, which is an easy magnetization axis. Such behaviour can be explained with the high magnetocrystalline anisotropy of the martensitic phase. The magnetic entropy change value, at the structural phase transition, obtained for the polycrystalline specimen, is close to that for the [0 0 1] single crystal direction.
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