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Small closed sea shipping regions (such as the Baltic Sea) are specially vulnerable to consequences of ecological disasters due to spills of fuel oil used for ship propulsion and carried in single-plating double-bottom tanks. An alternative solution (against the recommended double- plating structure) was proposed. It consists in applying the second, elastic protection barrier to decrease risk of oil...
Greater and greater number of cargo ships sailing over small, restricted water areas can endanger the environment - in the case of disaster - by spilling fuel oil, carried in the ship’s bottom tanks for its propulsion. In this paper is proposed an alternative solution (against that of double plating) in the form of the second, elastic protective barrier which would be able to decrease risk of spilling...
This paper presents a proposal of algorithm for determining fatigue life of steel laser-welded panels, elaborated on the basis of results of the author’s laboratory tests of full-scale structural models. The methodical algorithm and an example of elaborated design curve is presented
Paper presents examples of laboratory test and numerical modelling results of steel sandwich panels under in-plane load. Test and modelling procedure is presented and comparison of numerical and laboratory test obtained results of static compression is discussed
Problems of the behaviour of all-steel, laser welded sandwich panels in plate-to-web contact zone arepresented. Results of laboratory tests on determination of deformation field around laser weld under ben-ding load - obtained by laser interferometry technique - are shown. Analysis of strain field distribution isincluded and some conclusions related to modeling of behaviour of such connection are...
Significant attention was paid in all developed countries to the agriculture until the seventies of the last century. It was due to the food deficiency in the post-war period. The period of the intensive agriculture production in the former Czechoslovakia lasted longer, due to the necessity of the high self-sufficiency in food feed and raw materials, produced in the agriculture in the closed system...
Sodium and potassium ions are the most important components of gastric juice, besides hydrogen and chlorine. In this work it was decided to investigate the passage of radioactive sodium (Na²⁴ ) and potassium (K⁴² ) from the blood to the gastric juice of dogs with normal mucosa. Secretion was stimulated by histamine. Isotopes have been used to study this subject in humans by Bernier et al. (2), among...
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