Propofol infusion in anesthesia administration requires continual adjustment in the manual infusion system to regulate the hypnosis level. Hypnotic level is based on Bispectral Index Monitor (BIS) showing the cortical activity of the brain scaled between 0 to 100. The new challenging aspect of automation in anaesthesia is to estimate the concentration of hypnotic drugs in different compartments of the body including primary, rapid peripheral (muscle), slow peripheral (bones, fat) and effect site (brain) compartment based on Pharmacokinetics (PK) and Pharmacodynamics (PD) model. This paper aimed to regulate the hypnosis level with estimating the Propofol concentrations using a linear observer in feedback control strategy based on Integral Super-Twisting Sliding Mode Controller (ISTSMC). The drug concentration in plasma of the silico patients accurately estimated in nominal transient. The results show that tracking errors between the actual output in form of BIS level and linearized output nearly approaches to zero in the maintenance phase of anesthesia to ensure the controller response on sliding phase with optimum performances by achieving desired hypnotic level 50 on BIS. The robustness of control strategy is further ensured by adding measurement noise of electromagnetic environment of operation theatre distracting signal quality index of the output BIS level.

The aim of this article is to analyze the role of phraseological units (PhUs) in discourse and to investigate their co(n)textual dependency. The paper presents a typology of the lexical and phraseological units, labelled as co(n)textual supports and developed by Olza y Losada (2011): expressions that paraphrase the initial phraseological meaning; expressions that highlight a specific component of this meaning; lexical and phraseological units that are synonymous with the ‘central’ phraseological expression they co-occur with; and lexical and phraseological units that are antonymous with the ‘central’ expression. These units orient and specify the use and interpretation of PhUs. The analysis also focuses on the so-called markers of phraseological units that function as (quasi) PhUs that serve to introduce phraseology within discourse in a (more or less) explicit way and have pragmatic discursive value (cfr. Olza 2013). The last part of the article examines some PhUs whose implicatures can be affected by contextual circumstances and characterized by greater dependence on the general context of the statement despite showing some degree of conventionalization.

The mineralogy and chemistry of Upper Cretaceous-Lower Paleocene claystone sediments from Mardin and Batman, southeastern Turkey, were analyzed. The main mineral paragenesis in the Upper Cretaceous member formed chlorite-smectite (C-S) and illite, while the Lower Paleocene member occurred of chlorite-vermiculite (C-V) and vermiculite minerals. The clays were silica-poor but indicated high values of Al, Fe, Mg, Cr, Ni, V, and Zr. Lower contents of the alkali elements (Na, Ca, Mg, K) of the clayey sediments suggests a relatively denser weathering of the source area. The mineralogical compositions, major element ratios, trace, and rare earth element (REE ) contents of the sediments show that the Upper Cretaceous member consists of materials with a mainly felsic source lithology, while relatively contributions from basic sources are found in the Lower Paleocene unit. A comparison of the major and trace element contents of the phyllosilicate/clay minerals with the members revealed that the patterns of the clays were different from each other, although the enrichments/ decreases varied depending on the origin (basement rocks or detrital) of the derived rocks, minerals, and elements. REE content of clays increased from detrital to phyllosilicate/clay minerals of chemical/diagenetic/neoformation origin during the Lower Paleocene. During the Cretaceous and Tertiary periods, local or regional geodynamic and diagenetic events largely governed the rock sedimentation processes and provenance variations amongst Germav Formation members.

Given its high efficiency, low emissions and multiple fuelling options, the solid oxide fuel cells (SOFC) offer a promising alternative for stationary power generators, especially while engaged in micro-combined heat and power (μ-CHP) units. Despite the fact that the fuel cells are a key component in such power systems, other auxiliaries of the system can play a critical role and therefore require a significant attention. Since SOFC uses a ceramic material as an electrolyte, the high operating temperature (typically of the order of 700–900°C) is required to achieve sufficient performance. For that reason both the fuel and the oxidant have to be preheated before entering the SOFC stack. Hot gases exiting the fuel cell stack transport substantial amount of energy which has to be partly recovered for preheating streams entering the stack and for heating purposes. Effective thermal integration of the μ-CHP can be achieved only when proper technical measures are used. The ability of efficiently preheating the streams of oxidant and fuel relies on heat exchangers which are present in all possible configurations of power system with solid oxide fuel cells. In this work a compact, fin plate heat exchanger operating in the high temperature regime was under consideration. Dynamic model was proposed for investigation of its performance under the transitional states of the fuel cell system. Heat exchanger was simulated using commercial modeling software. The model includes key geometrical and functional parameters. The working conditions of the power unit with SOFC vary due to the several factors, such as load changes, heating and cooling procedures of the stack and others. These issues affect parameters of the incoming streams to the heat exchanger. The mathematical model of the heat exchanger is based on a set of equations which are simultaneously solved in the iterative process. It enables to define conditions in the outlets of both the hot and the cold sides. Additionally, model can be used for simulating the stand-alone heat exchanger or for investigations of a semiadiabatic unit located in the hotbox of the μ-CHP unit.

The paper presents a literature review on the topic of vapour power plants working according to the two-phase thermodynamic cycle with supercritical parameters. The main attention was focused on a review of articles and papers on the vapour power plants working using organic circulation fluids powered with low- and medium-temperature heat sources. Power plants with water-steam cycle supplied with a high-temperature sources have also been shown, however, it has been done mainly to show fundamental differences in the efficiency of the power plant and applications of organic and water-steam cycles. Based on a review of available literature references a comparative analysis of the parameters generated by power plants was conducted, depending on the working fluid used, the type and parameters of the heat source, with particular attention to the needs of power plant internal load.

The aim of this article is to trace the relationship between time and dead bodies or human remains in selected works of the Romantic period featuring Poland’s legendary (pre)history, notably Józef Ignacy Kraszewski’s Stara baśń ( An Ancient Tale), ‘Lech’ from Deotyma’s Polska w pieśni ( Poland in Song), Cyprian Norwid’s Wanda and Krakus, and Juliusz Słowacki’s Balladyna, Lilla Weneda and Król-Duch ( The Spirit King). As Polish state was effaced from the political map of Europe (“laid in the grave”) the Romantics sought to affirm Poland’s indelible cultural and historical continuity by blurring the hard bound-ary between past and present. Hence a new interest in all kinds of burial sites – tombs, mounds and barrows – and the human remains interred there. Their continued presence undermines simple notions of life and death.
The article examines the poetic elaborations of the idea of temporality, especially the imagery used to challenge the official narrative of Poland’s history. If the dead (con-ceived realistically or symbolically) do not cease to exist, the historiography of the victors does not have the last word. Moreover, by reanimating the dead, investing them with a bodily form and giving each of them a voice to tell their story, the Romantic writers produced a new way of history writing based on a radical revision of the relationship between past, present and future.