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Abstrakt

This article is an attempt to identify the main themes in the literary work of Zygmunt Haupt, a Polish writer, journalist and painter, who emigrated to the United States in the aftermath of World War II. His writings show a keen awareness of the issue of absence/presence and the related problems of memory traits, identity and literary representation. Drawing on the psychoanalytical criticism of Jacques Lacan and Julia Kristeva and the philosophy of Jacques Derrida, this reading of Haupt’s fi ction, especially his short stories (whose collected edition was published in 2007 under the title The Basque Devil), is a critical reassessment of his work. As a storyteller he excels in the depiction of scenes of terror, desire and the uncanny. The article argues Haupt’s work represents not only a remarkable literary achievement but also offers an interesting study case for critics whose approach is founded on literary theory, psychoanalysis and anthropology.
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There exist numerous modelling techniques and representation methods for digital control algorithms, aimed to achieve required system or process parameters, e.g. precision of process modelling, control quality, fulfilling the time constrains, optimisation of consumption of system resources, or achieving a trade-off between number of parameters. This work illustrates usage of Finite State Machines (FSM) modelling technique to solve a control problem with parameterized external variables. The structure of this work comprises six elements. The FSM is presented in brief and discrete control algorithm modelling is discussed. The modelled object and control problem is described and variables are identified. The FSM model is presented and control algorithm is described. The parameterization problem is identified and addressed, and the implementation in PLC programming LAD language is presented. Finally, the conclusion is given and future work areas are identified.
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Abstrakt

A dynamic economy contributes to the increase in the number of workers exposed to mechanical vibration caused by machines and transport equipment. As the means of transport are insufficiently recognised sources of mechanical vibrations, this article presents the results of whole-body and hand-arm vibration tests of 30 most common means of in-house transport. An analysis of vibration signals recorded at each workstation according to PN-EN 14253 and PN-EN ISO 5349 made it possible to determine the weighted values of components of directional vibration acceleration and the values of daily vibration exposure A(8). In order to assess exposure to whole-body and hand-arm vibration at the tested workstations of in-house transport, indices of vibration hazard related to admissible values, the total evaluation index (developed in a previous study at CIOP-PIB) and a three-degrees scale for assessing exposure to vibrations were used. The assessment showed that the workstations were a major hazard. Vibration hazards at all those workstations were classified as either medium or high.
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Abstrakt

The purpose of the work was initial modification of the construction of a commercially produced heat exchanger – recuperator with CFD (computational fluid dynamics) methods, based on designs and process parameters which were provided. Uniformity of gas distribution in the space between the tubes of the apparatus as well as the pressure drop in it were taken as modification criteria. Uniformity of the gas velocity field between the tubes of the heat exchanger should cause equalization of the local individual heat transfer coefficient values and temperature value. Changes of the apparatus construction which do not worsen work conditions of the equipment, but cause savings of constructional materials (elimination or shortening some parts of the apparatus) were taken into consideration.
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Abstrakt

Artykuł prezentuje tematykę zdrowia kobiety, jego ochrony i profilaktyki w polskich czasopismach popularnonaukowych wydawanych w XIX wieku. Bazę źródłową stanowią teksty publikowane w „Dzienniku Zdrowia dla Wszystkich Stanów” (1801–1802), „Przyjacielu Zdrowia” (1861–1863), „Zdrowiu” (1877/78–1880), „Lekarzu” (1903/04–1904/05). Zasadniczym zatem założeniem badawczym było udzielenie odpowiedzi na pytanie, czy w analizowanych periodykach problematyka zdrowia kobiety zajmowała należne temu zagadnieniu miejsce.
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Abstrakt

Tematem niniejszego opracowania są dzieje czasopism popularnonaukowych wydawanych na ziemiach polskich od XVIII wieku do 1939 roku. Początkową datę wyznacza rok 1758, kiedy to ukazał się pierwszy polski periodyk popularnonaukowy „Nowe Wiadomości Ekonomiczne i Uczone”. Badany zbiór objął 128 tytułów zróżnicowanych zarówno formalnie, jak i treściowo.
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The paper presents the possibilities of quantitative analysis of results obtained from CT examination of organs and anatomical structures of the upper respiratory tract. The presented results of the analysis were obtained using proprietary software developed in the MATLAB 2018b environment (Image Processing toolbox). The software enables to visualize the original results of CT scan and, after evaluating the visible structures, enables to select the area to be subjected to quantitative analysis. After the initial identification of an area of interest requiring detailed diagnostics, its volume and the surface areas of individual cross-sections are calculated in the area separated for examinations. A graphical presentation of the analysis results – the surface areas of selected cross-sections possible to visualize in two- and three-dimensional space – enables quick analysis of changes in the examined region.
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Abstrakt

This paper presents the results of studies in two phase gasliquid flow around tube bundle in the model of shell tube heat exchanger. Experimental investigations of heat transfer coefficient on the tubes surface were performed with the aid of electrochemical technique. Chilton-Colburn analogy between heat and mass transfer was used. Twelve nickel cathodes were mounted on the outside surface of one of the tubes. Measurement of limiting currents in the cathodic reduction of ferricyanide ions on nickel electrodes in aqueous solution of equimolar quantities of K3Fe(CN)6and K4Fe(CN)6in the presence of NaOH basic solution were applied to determine the mass transfer coefficient. Controlled diffusion from ions at the electrode was observed and limiting current plateau was measured. Measurements were performed with data acquisition equipment controlled by software created for this experiment. Mass transfer coefficient was calculated on the basis of the limiting current measurements. Results of mass transfer experiments (mass transfer coefficient) were recalculated to heat transfer coefficient. During the experiments, simultaneously conducted was the the investigation of two-phase flow structures around tubes with the use of digital particle image velocimetry. Average velocity fields around tubes were created with the use of a number of flow images and compared with the results of heat transfer coefficient calculations.
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