The use of modern production techniques such as 3D printing brings new requirements for shaping machine parts. In the case of the production of the runner blades of Kaplan micro-turbine using 3D printing technology from plastic, the emphasis is on the mechanical properties of the blade and hydraulic properties of the entire turbine. Achieving the required parameters is conditioned by finding a suitable shape of the runner. Therefore the design, virtual testing, optimization and evaluation process is automated. The paper describes the whole process where virtual testing of hydraulic parameters is performed by CFD simulations, and the methods of genetic algorithms are used for optimization. Selected final geometrical shapes of the blade are subjected to a more detailed analysis of hydraulic parameters in the wider operating range and also to the strength analysis.

All children experience trauma. The age, state of development and constitutional factors will determine whether some children will have a traumatic effect. Trauma occurring before the age of three, at a time when the ego has not developed its synthetic and integrative functions, may be reproduced in later life as an isolated symptom, by selected sensations involved in a sensory imprint or screen sensation of the trauma as a simple recording. After the age of three, under the influence of a more mature ego, excessive traumatic stimuli will be integrated and elaborated in symptom formations as phobias or other conditions and extended as part of the total personality. Recurrence in later life is triggered by events related not only to the original experience, but also to the content of its elaboration. The earlier in life the trauma occurs, the more likely that somatic imprints of primitive physiological symptoms would result as an archaic, biological defense or screen sensations. Recurrent sensory imprints or screens may appear as organic illness or functional somatic symptoms. Diagnostically, a detailed early life history is necessary to uncover the presence of a sensory screen memory of a trauma and so avoid diagnostic medical search for organic causation. Case material illustrating the two groups are presented. Indications for psychoanalysis and for supportive psychotherapy are discussed from our theoretical framework as well as from the literature.

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The aim of this study was to monitor the effect of Bifidobacterium bifidum (BB) and the combination of Lactobacillus sporogenes, Enterococcus faecium, and Bifidobacterium bifidum (LEB) on the health status and weight gain of calves, and the utilisation of nitrogenous substances. The experiment was performed in the period from April 2020 to September 2020. A total of 90 Holstein heifers, which were one to 56 days old, were used as experimental animals. Differences in live weight gain were significant if we compared the LEB vs BB group and the LEB vs C, the control group (86.23 ± 5.49 kg vs. 84.72 ± 6.22 kg, p <0.05; 86.23 ± 5.49kg vs. 82.86 ± 5.35 kg, p < 0.01). Considering the live weight gain, group BB was heavier than group C only (84.72 ± 6.22 kg vs. 82.86 ± 5.35 kg, p <0.05). An effect on reducing the incidence and duration of diarrheal diseases was not demonstrated in this study (p = 0.1957). The administration of feed additives had no statistically significant effect on the amount of N excreted in the feces. The values of hematological and biochemical parameters were unaffected except for the first sampling of urea. Other blood parameters were not affected by the addition of probiotic feed additives. The bacterial populations in the feces 5 days and 56 days after birth were not affected by the inclusion of feed additives.

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