1,181 research outputs found
Comparison of sCO2, CO2 mixture, and steam Rankine cycles for CSP with components sizing: implications for cost and flexibility
No full textLove in the First Degree: Manfred, Byron, and Incest
No full textThis is the author accepted manuscript. The final version is freely available from the University of Colorado via the link in this recordNote that the text of the manuscript varies considerably from the final published versionThis essay suggests that Byron’s Manfred contains not an expression of Byron’s guilt about his incest with his half-sister Augusta Leigh, as previous critics have suggested, but rather considerable evidence of his lack of guilt. It argues that the play displays incest and torment, but in fact does not link the two, instead displaying Manfred’s love for Astarte as deeply felt without regrets. The essay then argues that one finds the same combination of deep love and lack of regret in Byron’s remarks about his relationship with his half-sister, as well as in the representations of incest in his other works. It suggests that this acceptance of incest links to Byron’s commitment to rational thinking and personal freedom, and it invites future criticism to explore this connection in more detail
Untersuchung von Turbinen unter pulsierender Beaufschlagung
No full textIn order to expand the testing possibilities of a hot gas test bench for mechanical tests on exhaust gas turbochargers under engine-realistic pulsation, the object of this work is to develop a pulsation unit which is installed between the steady-state combustion chamber and the turbocharger. The aim of the new development of the pulsation unit is to achieve sufficiently high pulsation coefficients Ψ for a wide range of internal combustion engines regardless of the number of cylinders. The validation of the pulsation unit is based on engine test bench experiments on the turbocharger of a 1.0 L three-cylinder engine. A load variation at n = 2000 min-1 from pme = 10 bar to pme = 20 bar shows that the pressure pulsations are reproduced with sufficient accuracy at all operating points. With Ψ = 1.19, the pulsation unit at the LET operating point deviates only marginally from the values of the three-cylinder engine (Ψ =1.21). Known concepts so far achieve values of Ψ < 0.7. The investigation of the wastegate flap movement with optical measurement technology was carried out with engine-realistic exhaust pulsation, the comparable mechanical excitation leads to a matching WG flap movement. It could be shown that the pulsation generator works reliably. The operational reliability of the design has been experimentally demonstrated for maximum exhaust gas temperatures of T = 700 °C
Manfred Macmillan
No full textDecadence meets gothic in Manfred Macmillan (1907), a carefully constructed tale of doppelgangers, magical intrigue, and the rootless scion of a noble house. This annotated, first-ever English translation presents an early queer novel long unavailable except in the original Czech. Author Jiří Karásek ze Lvovic (1871–1951) was a major cultural figure in his native Bohemia and cultivated ties with fellow artists from across Central Europe. In their extensive scholarly introduction, translator Carleton Bulkin and translation scholar Brian James Baer situate the novel within longer histories of gay literature, fascinations with the occult, and the cultural and linguistic politics of so-called peripheral European nations. They persuasively frame Karásek as a queer author and cultural disruptor in the fin de siècle Habsburg space.
Karasék rejected Czech translations of ancient Greek writers that bowdlerized gay themes, and he personally and vigorously defended Oscar Wilde in print, both on the grounds of artistic freedom and of private morality. He also published a cycle of homoerotic poems under the title Sodom, confiscated by the Austrian authorities but republished in 1905 and repeatedly afterward. A colonized subject, a literary decadent, and a sexual outlaw, Karasék’s complex responses to his own marginalization can be traced through his fantastically strange novel trilogy Three Magicians. As the first volume in that series, Manfred Macmillan is a gorgeous, compelling, and important addition to expanding canons of LGBTQI+ literature
Manfred Macmillan
No full textDecadence meets gothic in Manfred Macmillan (1907), a carefully constructed tale of doppelgangers, magical intrigue, and the rootless scion of a noble house. This annotated, first-ever English translation presents an early queer novel long unavailable except in the original Czech. Author Jiří Karásek ze Lvovic (1871–1951) was a major cultural figure in his native Bohemia and cultivated ties with fellow artists from across Central Europe. In their extensive scholarly introduction, translator Carleton Bulkin and translation scholar Brian James Baer situate the novel within longer histories of gay literature, fascinations with the occult, and the cultural and linguistic politics of so-called peripheral European nations. They persuasively frame Karásek as a queer author and cultural disruptor in the fin de siècle Habsburg space.
Karasék rejected Czech translations of ancient Greek writers that bowdlerized gay themes, and he personally and vigorously defended Oscar Wilde in print, both on the grounds of artistic freedom and of private morality. He also published a cycle of homoerotic poems under the title Sodom, confiscated by the Austrian authorities but republished in 1905 and repeatedly afterward. A colonized subject, a literary decadent, and a sexual outlaw, Karasék’s complex responses to his own marginalization can be traced through his fantastically strange novel trilogy Three Magicians. As the first volume in that series, Manfred Macmillan is a gorgeous, compelling, and important addition to expanding canons of LGBTQI+ literature
Introducing the Recent development in input-output analysis
No full textThis is a draft chapter. The final version is available in Recent Development in Input-Output Analysis, edited by Erik Dietzenbacher, Michael L. Lahr, and Manfred Lenzen, published in 2020, Edward Elgar Publishing Ltd. https://doi.org/10.4337/9781786430816.
The material cannot be used for any other purpose without further permission of the publisher, and is for private use only
Czech topics in work of Manfred Böckl
No full textDiese Abschlussarbeit beschäftigt sich mit tschechischen Themen in Werken des bayerischen Schriftstellers Manfred Böckl. Am Anfang werden das Leben und die Schöpfung dieses Autors vorgestellt, danach folgt die Analyse von tschechischen Themen bei ausgewählten Titeln. Die Arbeit ergänzt das Interview mit Manfred Böckl.Tato práce se zabývá českými tématy v dílech bavorského spisovatele Manfreda Böckla. Na začátku je představen život a tvorba tohoto autora, poté následuje analýza českých témat u vybraných literárních titulů. Práci doplňuje rozhovor s Manfredem Böcklem.This thesis is about czech topics in writings of bavarian author Manfred Böckl. In the first part there is described his life and literary output. After thet there is analysis of czech topics in selected literary works. Thesis is filled in with interview with Böckl himself.Katedra cizích jazykůDokončená práce s úspěšnou obhajobo
Einfluss des Stator-Radialspaltes auf die aerodynamische Auslegung von Hub-Treatments für subsonische Turboverdichter
No full textFor cantilevered stator vanes a radial gap is required between the airfoil and the rotating endwall. The resulting blockage limits the surge margin of axial compressors. Hub Treatments (HTs) in the rotating hub under vanes can reduce the blockage in the endwall region. Their functionality is based, in analogy to Casing Treatments (CTs), on a flow recirculation driven by pressure gradients. Beside the operating point has also the clearance size an impact on the pressure gradients near the endwall, affecting the functionality of HTs. This thesis is focusing on the flow interaction between HTs and vanes with varying clearance sizes. In this work numerical flow simulations were conducted on an axial compressor. HTs are featuring an axially skewed slot design and their functionality was tested for different slot lengths. A vane clearance sensitivity study was first conducted without HTs. For large radial clearances, the velocities near endwall are reduced and the passage can be fully blocked. A change of flow topology affects the pressure gradients in the passage and the recirculation in the HTs. Unsteady numerical flow simulations with HTs near stall confirm that the functionality of this technology is sensitive to the vane clearance size. For large clearances a significant blockage reduction can only be achieved with a HT-slot trailing edge positioned downstream of 40% stator chord. Only for this overlapping is the pressure difference over the slot sufficient for an effective suction of the low energy fluid from the vane passage. For small radial gaps the clearance flow intensity is reduced and a positioning of the HT-slot trailing edge upstream of 30% stator chord is sufficient for a continuous degradation of the hub clearance vortex along its trajectory. If the vane radial clearance becomes larger, the axial pressure differences in the passage tend to be the main driver for the recirculation in the HTs. For reduced radial clearances the recirculation is mostly driven by the pressure difference between the pressure- and the suction side of the vane. This thesis shows that a clearance specific design of HTs is necessary
Numerische Analyse des Einflusses von geöffneten und geschlossenen Deckband-Kavitäten auf die Strömung in Hochdruckdampfturbinen
No full textUntersuchung von Dampfturboladern zur Effizienzsteigerung durch Kopplung von Dampf- und Druckluftnetzen
No full textDer Dampfturbolader soll das exergetische Potenzial der Druckreduzierung in Dampfnetzen im kleinen Leistungsbereich (<1 MW) erschließen und ohne den Umwandlungsschritt in elektrische Energie direkt Druckluft erzeugen. Diese Prozessoptimierungsoption als direkte Kopplung einer Axialturbine mit einem Radialverdichter wird in der vorliegenden Arbeit im Leistungsbereich von 50 kW bis 300 kW erstmalig untersucht. Hierzu wird ein Modell zur detaillierten dreidimensionalen Auslegung und Untersuchung von Dampfturboladern auf Basis von Surrogate-Models entwickelt und für zwölf typische Referenzfälle in Deutschland angewendet. Die Untersuchungen zeigen, dass der Einsatz eines Dampfturboladers einen ökonomischen Mehrwert für Unternehmen aufgrund einer signifikanten Betriebskosteneinsparung bietet. Darüber hinaus wurden in den betrachteten Fällen der Primärenergieaufwand um 34 % bis 42 % sowie der CO2-Ausstoß um 58 % bis 63 % gesenkt
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