293 research outputs found
Gea Dobrzańska, Z zakopańskich tchnień. Pomiędzy fabułą a rzeczywistością
Full text link GEA DOBRZAŃSKA, Z ZAKOPIAŃSKICH TCHNIEŃ, BREATH OF ZAKOPANE. BETWEEN PLOT AND REALITYThe article is an analysis of a 1914 collection of stories, Z zakopańskich tchnień Breath ofZakopane and an attempt to discover the identity of its author, Gea Dobrzańska. Dobrzańska,who came most likely from Wielkopolska, was a socially engaged writer: she collaborated withthe Na posterunku journal, the editor-in-chief of which was also part of the editorial committee of Eleuteria’s magazine. Her oeuvre suggests that she was no stranger to the ideas of Towianism and, more broadly, Romanticism.The article focuses on four stories from the collection Kartki znalezione na Antałówce, Przed czynem Before Action, Magnificat, W górach In the Mountains, the action of which takes place in Zakopane. The world presented by the author in these stories indicates that she was familiar with the reality of life in the Podhale region before the First World War and confirms her commitment to social and political causes, commitment reflected in her work.Another trail in the process of discovering Dobrzańska’s biography leads to Eleusis, a society founded by Wincenty Lutosławski. The writer’s links to this organisation, promoting abstinence and spiritual development, are suggested both by elements from her biography and by her literary oeuvre. GEA DOBRZAŃSKA, Z ZAKOPIAŃSKICH TCHNIEŃ, BREATH OF ZAKOPANE. BETWEEN PLOT AND REALITYThe article is an analysis of a 1914 collection of stories, Z zakopańskich tchnień Breath ofZakopane and an attempt to discover the identity of its author, Gea Dobrzańska. Dobrzańska, who came most likely from Wielkopolska, was a socially engaged writer: she collaborated with the Na posterunku journal, the editor-in-chief of which was also part of the editorial committee of Eleuteria’s magazine. Her oeuvre suggests that she was no stranger to the ideas of Towianism and, more broadly, Romanticism.The article focuses on four stories from the collection Kartki znalezione na Antałówce, Przed czynem Before Action, Magnificat, W górach In the Mountains, the action of which takes place in Zakopane. The world presented by the author in these stories indicates that she was familiar with the reality of life in the Podhale region before the First World War and confirms her commitment to social and political causes, commitment reflected in her work.Another trail in the process of discovering Dobrzańska’s biography leads to Eleusis, a society founded by Wincenty Lutosławski. The writer’s links to this organisation, promoting abstinence and spiritual development, are suggested both by elements from her biography and by her literary oeuvre
Hersendood
No full textDoor medisch-technische ontwikkelingen als reanimatie, beademing en transplantatie kwamen de bestaande criteria voor het vaststellen van de dood in de jaren vijftig steeds meer onder druk te staan. Traditioneel vond de doodsdiagnostiek plaats aan de hand van hart- en longcriteria, waarbij het onomkeerbare verlies van hart- en longfunctie werd gezien als de dood. Tot aan het eind van de jaren vijftig representeerde het kloppend hart het leven: zonder hartslag was je dood. Maar door de mogelijkheid van beademing bleek deze min of meer vanzelfsprekende definitie van de dood niet meer zo eenduidig toepasbaar. De overtuiging dat het kloppen van het hart niet meer genoeg was om de levende mens te representeren, won dan ook steeds meer terrein
Hersendood
No full textDoor medisch-technische ontwikkelingen als reanimatie, beademing en transplantatie kwamen de bestaande criteria voor het vaststellen van de dood in de jaren vijftig steeds meer onder druk te staan. Traditioneel vond de doodsdiagnostiek plaats aan de hand van hart- en longcriteria, waarbij het onomkeerbare verlies van hart- en longfunctie werd gezien als de dood. Tot aan het eind van de jaren vijftig representeerde het kloppend hart het leven: zonder hartslag was je dood. Maar door de mogelijkheid van beademing bleek deze min of meer vanzelfsprekende definitie van de dood niet meer zo eenduidig toepasbaar. De overtuiging dat het kloppen van het hart niet meer genoeg was om de levende mens te representeren, won dan ook steeds meer terrein
Fault Detection and Diagnosis of Industrial Heat Pumps of GEA B.V.
No full textHeat pumps represent an effective technology to convert electrical energy to thermal energy through the expansion and compression of a refrigerant. Heat pumps are becoming increasingly more efficient which decreases energy consumption. However as heat pumps are getting increasingly more efficient, complexity is also increasing which leads to failures.GEA is one of Europe’s largest providers of industrial heat pumps, delivering a variety of different industrial heat pumps for food production, breweries, waste heat recovery, and thermal power plants. As industrial heat pump systems are becoming increasingly complex, so is the task of detecting faults in the systems. Whenever a heat pump breaks down it is challenging to see what the reason for the failure is without visual inspection. A typical service engineer will have data from over 20 sensors, each with over two and a half million measurement intervals, to inspect and look for the cause of failure. Visual inspection of the heat pump systems can only be done by experienced engineers who knowsexactly what to look for and where to look for it.As heat pumps have been developing so has the sensor technology and computational resources available in modern computers. Over the last decades the price of sensors has decreased rapidly while the capability and reliability of sensors has improved. The computational power of modern computers has increased significantly while the price for these resources has decreased. Several other industries have, with the development in sensor technology and computational power, investigated the possibilities of implementing Fault Detection & Diagnosis (FDD) programs to automaticallyanalyze sensor data in order to detect failures and diagnose the failure cause. FDD programs were previously limited to critical processes, for example power plants, aerospace, or national defence. Theywere expensive programs due to the sensor requirements, the computational resource requirements and the development costs. However, as the price of sensors and computational resources has beendecreasing, FDD is becoming increasingly more popular for less critical equipment. For the past two decades FDD programs have been developed for different Heating, Ventilation, Air-Conditioning and Refrigeration (HVAC&R) equipment with a special focus to refrigeration.This project aims to develop a FDD program for GEAs industrial heat pump systems. Following a literature study it was concluded that thus far, FDD programs have not been utilized for heat pump systems of this complexity. It was seen that most FDD programs use a quantitative, qualitative or process history based approach to detect faults. Quantitative FDD programs aim to design a digital twin of the system at hand based on physical relations, and compare measured values to defined values forfaulty or fault-free operation. Qualitative FDD programs aim to mimick the behaviour of system experts and base decisions on previously seen failures and cases. Process history based FDD programs aimto learn how systems should ideally behave through an abundance of operational data, and compare systems to sampled data.The FDD program for GEA uses a qualitative approaches for all faults where expert knowledge is available. For faults not seen before, a process history based approach classifies operation as faulty orfault-free. The complexity of the faults and the system do not allow for a quantitative FDD program. A predefined list of in total 23 faults was agreed upon, the FDD program further aims to detect all 23 failures and diagnose the failure cause.The project is meant as a proof of concept for GEA. By proving that an off-line FDD program is possible, GEA can ultimately implement the algorithms used in this off-line FDD program in to the control system of the heat pumps to increase the reliability of their heat pumps and detect faults as they are occurring.Mechanical Engineerin
Optimising motor evoked potentials for spinal cord monitoring
Full text linkDuring complex surgery, during which the nervous system is at risk, intraoperative neurophysiological monitoring (IONM) is used to detect and prevent neurologic injury. Surgical procedures during which IONM is used range from intramedullary tumour resection to scoliosis correction and endovascular aneurysm repair to vestibular schwannoma resection. The goals of IONM can be divided into 'mapping' and 'monitoring' of the nervous system. During 'mapping' the goal is to localise anatomical structures during surgery. The goal of 'monitoring' is to (continuously) monitor neurological functions. For monitoring of the spinal cord, the motor tracts can be monitored using muscle motor evoked potentials (mTc-MEPs) and spinal motor evoked potentials (D-waves) elicited by transcranial electrical stimulation. For monitoring of the sensory tracts, somatosensory evoked potentials (SSEPs) can be used. It is recommended that both sensory tracts and motor tracts are monitored during surgical procedures where the spinal cord is at risk. IONM is increasingly used worldwide. The amount of clinical evidence demonstrating the added value of IONM is increasing. It is generally accepted that IONM can predict the post-operative neurological outcome, but whether the use of IONM can also help to prevent post-operative neurological damage has still to be proven. The primary aim of this thesis is to optimise motor evoked potentials for spinal cord monitoring by optimising elicitation and recording of mTc-MEPs (Part 1) and investigating the effects of physiological and pharmacological parameters on mTc-MEPs (Part 2). Furthermore, the clinical applications of spinal cord monitoring were explored (Part 3)
Hersendood
No full textDoor medisch-technische ontwikkelingen als reanimatie, beademing en transplantatie kwamen de bestaande criteria voor het vaststellen van de dood in de jaren vijftig steeds meer onder druk te staan. Traditioneel vond de doodsdiagnostiek plaats aan de hand van hart- en longcriteria, waarbij het onomkeerbare verlies van hart- en longfunctie werd gezien als de dood. Tot aan het eind van de jaren vijftig representeerde het kloppend hart het leven: zonder hartslag was je dood. Maar door de mogelijkheid van beademing bleek deze min of meer vanzelfsprekende definitie van de dood niet meer zo eenduidig toepasbaar. De overtuiging dat het kloppen van het hart niet meer genoeg was om de levende mens te representeren, won dan ook steeds meer terrein
Hersendood
No full textDoor medisch-technische ontwikkelingen als reanimatie, beademing en transplantatie kwamen de bestaande criteria voor het vaststellen van de dood in de jaren vijftig steeds meer onder druk te staan. Traditioneel vond de doodsdiagnostiek plaats aan de hand van hart- en longcriteria, waarbij het onomkeerbare verlies van hart- en longfunctie werd gezien als de dood. Tot aan het eind van de jaren vijftig representeerde het kloppend hart het leven: zonder hartslag was je dood. Maar door de mogelijkheid van beademing bleek deze min of meer vanzelfsprekende definitie van de dood niet meer zo eenduidig toepasbaar. De overtuiging dat het kloppen van het hart niet meer genoeg was om de levende mens te representeren, won dan ook steeds meer terrein
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Session D7: Fishway with Two Entrance Locations: Understanding its importance for Iberian Barbel
No full textPresenting Author Bio: PhD. Forestry Engineer. Hydraulics Professor at University of Valladolid. Principal of the research group GEA (Group of Applied Ecohydraulics). Specialist in fishways design and evaluationAbstract In recent years, in the Iberian Peninsula, many fish passes have been built and improved. To ensure the proper operation of these, it is essential to carry out an evaluation and subsequent monitoring, considering both biologic and hydraulic aspects. We analyze the performance of Iberian barbel –Luciobarbus bocagei (Steindachner, 1864)– in a technical fishway: pool and weir, with bottom orifice. It is located in the Josefina hydropower plant (Duero River, Valladolid, Spain). Fish ladder has two fish entrances: one in the turbine outlet channel and another in the natural river course. Both the most relevant hydraulic values (flow, velocity, volumetric energy dissipation) and biological parameters (movement pattern, attraction, entry and passage) were measured. Biological assessment was conducted in the spawning season using PIT tag technology. The main influence on upstream movement was river discharge. There were no preferences between path selection; and ascent success and transit time were similar between two entrances.. Results highlight the importance of two access points for improve entrance and decrease migration delay
Teaching video neuroimages: lid lag sign and diplopia in paramyotonia congenita
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Positive muscle phenomena--diagnosis, pathogenesis and associated disorders.
No full textItem does not contain fulltextPositive muscle phenomena arise owing to various forms of spontaneous muscle hyperactivity originating in motor neurons or in the muscle itself. Although they are common in a wide range of neurological and non-neurological diseases, clinical and scientific data on these phenomena are limited, and their presence is sometimes overlooked. This gap in our knowledge hampers effective diagnosis and treatment. In this article, we review the clinical characteristics and approach to diagnosis of the various positive muscle phenomena, and discuss their genetic underpinnings and pathophysiological mechanisms. Finally, we outline an algorithm to discriminate between the different positive muscle phenomena.01 februari 201
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