Historia Polskiego Wydziału Lekarskiego przy Uniwersytecie w Edynburgu, 1941-1949. Nowa perspektywa badawcza

Artykuł przedstawia wyniki wieloletnich badań nad historią Polskiego Wydziału Lekarskiego (PWL) przy Uniwersytecie w Edynburgu. W odniesieniu do istniejącej literatury przedmiotu, w której ta założona w czasie II wojny światowej uczelnia prezentowana jest zarówno jako instytucja bez precedensu w historii świata jak i kontynuacja przedwojennych polskich uniwersytetów, niniejsza praca proponuje spojrzenie na ten temat z perspektywy historii emigracji przymusowej z kontynentalnej Europy w pierwszej połowie XX w. Nieznane wcześniej fakty na temat powstania i likwidacji PWL przedstawiono w szerszym kontekście zmieniających się postaw wobec lekarzy-uchodźców w Wielkiej Brytanii. Ponadto podkreślono transnarodowy charakter PWL i kluczową rolę, jaką w jej powstaniu odegrały kompetencje transkulturowe naukowców, takich jak Francis Crew i Antoni Jurasz. Wreszcie zasugerowano, że kreatywne połączenie polskich i szkockich programów i metod nauczania w czasie studiów medycznych na PWL ułatwiło po wojnie integrację polskich lekarzy- -uchodźców nie tylko w Wielkiej Brytanii, lecz również w innych krajach osiedlenia, takich jak USA, Kanada, Australia czy Nowa Zelandia. = This article presents the results of many years of research on the history of the Polish School of Medicine (PSM) at the University of Edinburgh. With reference to the existing literature in which this wartime faculty is portrayed both as an institution that was unprecedented in the history of the world and as a continuation of pre-war Polish universities, this paper looks at the topic from the perspective of the history of forced migration from continental Europe in the first half of the 20th century. Previously unknown facts on the origins and liquidation of the PSM are discussed in the broader context of the changing attitudes towards medical refugees in Great Britain. The transnational character of the PSM and the essential role played in its creation by the transcultural competence of academics, such as Francis Crew and Antoni Jurasz, has also been emphasised. Finally, it is suggested that a creative combination of Polish and Scottish programmes and methods of teaching during medical studies at the PSM facilitated the postwar integration of Polish medical refugees not only in Great Britain but also in other countries of settlement, such as USA, Canada, Australia and New Zealand

Experimental Test Rig For The Visualisation Study Of The Transcritical Flow In The Two-Phase R744 Ejectors

Recent studies have provided the significant number of approaches to enhance the performance of a twophase ejector, especially for transcritical CO2 cycles. However, the investigation of the mixing process is still challenging matter due to the highspeed fluid flow coupled with mixing of vapour and partially evaporated liquid stream. On the other hand, these phenomena directly influence the ejector efficiency. The behaviour of the aforementioned processes would be valuable for validation the numerical models as well as a required control of the system operation. Hence, in this work, the laboratory test rig for visualisation of the CO2 ejector mixing processes along suction nozzle, premixing chamber and diffuser was developed and manufactured. The visualisation techniques used for this study include the highspeed camera recordings and PIV measurements. The work consists of installation description, including the measurement approaches, solution predicted by the computational model for the transparent construction of the ejector and visualisation procedures. The selected onand offdesign operating points were described having regard ejector performance factors and its correlation with the output of the visualisation procedure

The problematic legacy of victim specimens from the Nazi era: Identifying the persons behind the specimens at the Max Planck Institutes for Brain Research and of Psychiatry

Although 75 years have passed since the end of World War II, the Max Planck Society (Max-Planck Gesellschaft, MPG), successor to the Kaiser Wilhelm Society (Kaiser-Wilhelm-Gesellschaft, KWG), still must grapple with how two of its foremost institutes—the KWI of Psychiatry in Munich and the KWI for Brain Research in Berlin-Buch—amassed collections of brains from victims of Nazi crimes, and how these human remains were retained for postwar research. Initial efforts to deal with victim specimens during the 1980s met with denial and, subsequently, rapid disposal in 1989/1990. Despite the decision of the MPG’s president to retain documentation for historical purposes, there are gaps in the available sources. This article provides preliminary results of a research program initiated in 2017 (to be completed by October 2023) to provide victim identifications and the circumstances of deaths

Development of the natural working fluid‐based refrigeration system for domestic scale freeze‐dryer

In this work, the analysis of the refrigeration system designed for the FrostX 10 freeze‐dryer is presented. The main goal of this study was to experimentally investigate the reference R452a freeze‐dryer and prepare recommendations for a machine based on the R290 refrigeration unit. In order to guarantee the temperature requirements and efficient operation of that unit, the analysis of suitable natural refrigerants was performed. Consequently, propane (R290) was selected. In addition, a number of modifications were introduced for the prototype system. System analysis showed that the replacement of the refrigerant in the existing system improves the system energy efficiency by approximately 18%. During the experimental campaign of the basic refrigeration unit, an unstable operation of the evaporator was found. The concept of a new cooling system for a prototype device was presented. The configuration and type of heat exchanger to maximise the performance of the ice trap of the freeze‐dryer were proposed.Development of the natural working fluid‐based refrigeration system for domestic scale freeze‐dryeracceptedVersio

Mechanical thrombectomy in acute stroke – Five years of experience in Poland

Objectives Mechanical thrombectomy (MT) is not reimbursed by the Polish public health system. We present a description of 5 years of experience with MT in acute stroke in Comprehensive Stroke Centers (CSCs) in Poland. Methods and results We retrospectively analyzed the results of a structured questionnaire from 23 out of 25 identified CSCs and 22 data sets that include 61 clinical, radiological and outcome measures. Results Most of the CSCs (74%) were founded at University Hospitals and most (65.2%) work round the clock. In 78.3% of them, the working teams are composed of neurologists and neuro-radiologists. All CSCs perform CT and angio-CT before MT. In total 586 patients were subjected to MT and data from 531 of them were analyzed. Mean time laps from stroke onset to groin puncture was 250±99min. 90.3% of the studied patients had MT within 6h from stroke onset; 59.3% of them were treated with IV rt-PA prior to MT; 15.1% had IA rt-PA during MT and 4.7% – emergent stenting of a large vessel. M1 of MCA was occluded in 47.8% of cases. The Solitaire device was used in 53% of cases. Successful recanalization (TICI2b–TICI3) was achieved in 64.6% of cases and 53.4% of patients did not experience hemorrhagic transformation. Clinical improvement on discharge was noticed in 53.7% of cases, futile recanalization – in 30.7%, mRS of 0–2 – in 31.4% and mRS of 6 in 22% of cases. Conclusion Our results can help harmonize standards for MT in Poland according to international guidelines

LENNY A. UREÑA VALERIO, Colonial Fantasies, Imperial Realities: Race Science and the Making of Polishness on the Fringes of the German Empire, 1840–1920

Recenzja książki Lenny A. Ureña Valerio, Colonial Fantasies, Imperial Realities: Race Science and the Making of Polishness on the Fringes of the German Empire, 1840–1920, Athens 2019.  Review of Lenny A. Ureña Valerio's book, Colonial Fantasies, Imperial Realities: Race Science and the Making of Polishness on the Fringes of the German Empire, 1840–1920, Athens 2019.

History of the Polish School of Medicine at the University of Edinburgh, 1941-1949. A New Research Perspective.

Artykuł przedstawia wyniki wieloletnich badań nad historią Polskiego Wydziału Lekarskiego (PWL) przy Uniwersytecie w Edynburgu. W odniesieniu do istniejącej literatury przedmiotu, w której ta założona w czasie II wojny światowej uczelnia prezentowana jest zarówno jako instytucja bez precedensu w historii świata jak i kontynuacja przedwojennych polskich uniwersytetów, niniejsza praca proponuje spojrzenie na ten temat z perspektywy historii emigracji przymusowej z kontynentalnej Europy w pierwszej połowie XX w. Nieznane wcześniej fakty na temat powstania i likwidacji PWL przedstawiono w szerszym kontekście zmieniających się postaw wobec lekarzy-uchodźców w Wielkiej Brytanii. Ponadto podkreślono transnarodowy charakter PWL i kluczową rolę, jaką w jej powstaniu odegrały kompetencje transkulturowe naukowców, takich jak Francis Crew i Antoni Jurasz. Wreszcie zasugerowano, że kreatywne połączenie polskich i szkockich programów i metod nauczania w czasie studiów medycznych na PWL ułatwiło po wojnie integrację polskich lekarzy- -uchodźców nie tylko w Wielkiej Brytanii, lecz również w innych krajach osiedlenia, takich jak USA, Kanada, Australia czy Nowa Zelandia.This article presents the results of many years of research on the history of the Polish School of Medicine (PSM) at the University of Edinburgh. With reference to the existing literature in which this wartime faculty is portrayed both as an institution that was unprecedented in the history of the world and as a continuation of pre-war Polish universities, this paper looks at the topic from the perspective of the history of forced migration from continental Europe in the first half of the 20th century. Previously unknown facts on the origins and liquidation of the PSM are discussed in the broader context of the changing attitudes towards medical refugees in Great Britain. The transnational character of the PSM and the essential role played in its creation by the transcultural competence of academics, such as Francis Crew and Antoni Jurasz, has also been emphasised. Finally, it is suggested that a creative combination of Polish and Scottish programmes and methods of teaching during medical studies at the PSM facilitated the postwar integration of Polish medical refugees not only in Great Britain but also in other countries of settlement, such as USA, Canada, Australia and New Zealand

Non-equilibrium approach in simulations of the R744 flow through the motive nozzle of the two-phase ejector

The ejector technology for R744 systems was continuously improved over the last two decades in the area of control and design processes. The latter should be related with a significant interest on modelling approaches including numerical simulations. However, some limitations of the existing approaches are still present, while the application range of the ejectors is still increasing regarding mobile and domestic applications. Namely, a quality of the flow prediction in the transcritical two-phase ejector varies depending on the operating conditions and correlated phenomena. The accurate and time efficient computational approach including the operating range of low condensing pressures is presented with the aim of more effective ejector design. The mixture approach developed on the basis of the Homogeneous Equilibrium Model is described regarding prediction of the motive and suction mass flow rate which are crucial for proper control procedures of the ejector-based refrigeration cycle. Additional equation for the vapour quality transport and re-formulated property definitions are utilised for proper control of the evaporation process in the motive nozzle of the ejector. Coefficients in source terms of the quality equation were mapped regarding high accuracy of the motive mass flow rate prediction. Hence, the calibration procedure of the coefficients, resulting in an approximation function as well as mapping of the suction nozzle accuracy regarding turbulence modelling and cavitation phenomena are introduced in this study. Finally, a comparison with the baseline homogeneous equilibrium model is given on the basis of the mass flow rate prediction and field parameters. Keywords: Carbon Dioxide, Transcritical Ejector, Phase change modelling, Expansion modellin