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The light influence on crude oil-seawater emulsion

100%
Stochmal W., Gurgul H., Szymczyk W.
Oceanological Studies
|
1994
|
issue 66/7
15-24
EN
The solar energy influence on light attenuation coefficient (LAC) spectrum and particle size distribution (PSD) of laboratory crude oil-seawater emulsion was investigated. It was demonstrated that light facilities dispergation of emulsion and cauises the increase of LAC in ultraviolet range during storing.PSD of crude oil droplets (d ? 0.5 ?m) in emulsion did not depend on lighting conditions during storing of emulsion.Because of increase of lighy attenuation coefficient selectivity for illuminated emulsion, the increase of number of small droplets (d ?0.5 ?m) of crude oil is highly probable.
2
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Ion Implantation and Transient Melting: A New Approach to Formation of Superconducting MgB_2 Phases

64%
Piekoszewski J., Kempiński W., Stankowski J., Prokert F., Richter E., Stanisławski J., Werner Z., Szymczyk W.
Acta Physica Polonica A
|
2004
|
vol. 106
|
issue 6
861-868
EN
An attempt to synthesize superconducting MgB_2 inter-metallic compound from the liquid state is presented. The process consists of two steps. In the first one, boron ions are implanted into a magnesium substrate. In the second one, the near-surface region of such system is melted by short, intense hydrogen plasma pulses without necessity of annealing in Mg vapor. A magnetically modulated microwave absorption method was used to detect superconducting regions in the obtained MgB_2 layer. Percolation between nano-regions (islands) of MgB_2 has not been observed. However, a superconducting state of the insulated islands has been experimentally proven with transition temperatures T_C as high as 31 K.
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