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Abstract

Lysimeters represent the ideal tool for direct measurement of soil water balance components in soil profiles. Changes in the water content in a soil monolith can be measured with sufficient accuracy by the precise lysimeter weighing system.Water content changes in soil monolith as derived from lysimeter mass represent one of the basic water balance compo-nent. This paper deals with the development and comparison of individual soil water balance components in two different soil profiles from the Easter-Slovakian-Lowland. Two lysimeter vessels were filled monolithically with two different soil profiles covered with grass: one sandy soil profile from locality Poľany and one silty-loam soil profile from locality Vysoká nad Uhom. A constant groundwater level of 1 m below ground level was maintained in both soil profiles. Under the same meteorological conditions, all differences in the development of water balance components were caused only by the differences in soil profiles. The actual evapotranspiration and water flows at the bottom of the soil profiles were compared. Sandy soils are generally considered to be more prone to drought than silty-loam soils. Under the specific conditions of this experiment (maintaining a constant groundwater level) the opposite was shown, when the silty-loam soil profile was more prone to drought than sandy soil profile. Sandy soilprofile from Poľany reacted more quickly to precipitation (or evaporation). Due to the higher hydraulic conductivity of the sandy soil compared to the silty-loamy soil, the groundwater level response to external stimuli was much faster.

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Authors and Affiliations

Andrej Tall
Dana Pavelková
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Abstract

The subject of the study was the production and characterization of three ceramic-metal graded composites, which differed in addition of the metallic phase. The following composites systems were investigated: Al2O3-Mo, Al2O3-Cu, Al2O3-W. Composites were produced by centrifugal slip casting method. This technique combines the classic casting of the slurry into porous molds with the action of centrifugal force. As a result, sleeve-shaped shapes with a metallic phase gradient were obtained. X-ray phase analysis have not revealed new phases in the produced composites. The type of metallic phase and its distribution in the ceramic matrix influenced the hardness of the produced composites.

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Authors and Affiliations

M. Wachowski
W. Kaszuwara
A. Miazga
K. Konopka
J. Zygmuntowicz
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Abstract

Professor Zdzislaw Chlewinski was the creator and head of the Department of Experimental Psychology at the Catholic University of Lublin. His main interests were focused on decision-making and risk-taking, and in general – on human cognition, including errors in thinking. As a scholar, researcher and educator, he was concerned with methodological precision and the use of computational methods in psychological research. As a man of science and a Catholic priest, he was distinguished by his open-mindedness, cognitive curiosity, tolerance and social commitment. The article presents the Professor's scientific profile and research, publication and organizational achievements.
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Authors and Affiliations

Jerzy M. Brzeziński
1 2
Piotr K. Oleś
3

  1. członek rzeczywisty PAN
  2. Wydział Psychologii i Kognitywistyki UAM
  3. Instytut Psychologii KUL JPII

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