cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Experimental and Numerical Study on Thermal Hydraulic Performance of Trapezoidal Printed Circuit Heat Exchanger for Supercritical CO2 Brayton Cycle
Creators: name: Ji, Yuxuan
name: Wang, Zheng
name: Wang, Mingxuan
name: Liu, Yafei
name: Xu, Haoran
name: Zhu, Peiwang
name: Xiao, Gang
Publisher: name: DuEPublico: Duisburg-Essen Publications online, University of Duisburg-Essen, Germany
Year: 2023
Subjects: subject: thermal hydraulic performance
subject: PCHE
subject: trapezoidal channel
subject: supercritical carbon dioxide
subject: 620

description: The supercritical carbon dioxide (sCO2) Brayton cycle is the preferred power cycle for future nuclear energy, fossil energy, solar energy, and other energy systems. As the preferred regenerator in the cycle, the printed circuit heat exchanger (PCHE) exhibits a high heat transfer efficiency, compactness, and robustness. The structure design of its internal flow channel is one of the most important factors to enhance the heat transfer and reduce pressure loss. In the present work, trapezoidal channel structure is developed and its thermal–hydraulic performances are compared with the straight, the S-shape, and the zigzag structures. Further, a trapezoidal PCHE prototype is manufactured and experimentally studied as a regenerator in the sCO2 test loop. The overall heat transfer coefficient exceeds 1.10 kW/(m2·K) and reaches a maximum of 2.53 kW/(m2·K) with the changes in the inlet temperature, the working pressure, and the mass flow rate. Correlations of the Nusselt numbers are proposed on both sides, with the Reynolds numbers ranging from 10,000 to 30,000 and 4800 to 14,000, and the Prandtl numbers ranging from 0.91 to 1.61 and 0.77 to 0.98 on the cold side and hot side, respectively. The pressure drop of the channels calculated by the peeling method using a single-plate straight prototype is less than 7 kPa and 15 kPa on the hot and the cold side, respectively. The heat recovery efficiency is analyzed to evaluate the performance of the PCHE used as a regenerator. Finally, simulation works are carried out to verify the experimental results and expand the Reynolds numbers ranging from 3796 to 30,000 and 1821 to 14,000, on the cold side and hot side, respectively. This work provides the test methods and experimental correlations for the development of an efficient PCHE in the sCO2 Brayton cycle.
description: Conference Proceedings of the European sCO2 Conference5th European sCO2 Conference for Energy Systems: March 14-16, 2023, Prague, Czech Republic, p. 236
title: Design and testing of a supercritical CO2 compander for 2 MW output power
Creators: name: Sauerborn, Markus
name: Schmitz, Ulrich
name: Bohn, Jürgen
name: Enneking, Martin
name: Brenner, Jens
Publisher: name: DuEPublico: Duisburg-Essen Publications online, University of Duisburg-Essen, Germany
Year: 2023
Subjects: subject: 620

description: Around the globe, there has been a growing interest in using sCO2 power cycles to recover waste heat from various heat sources. This paper will focus on the case of a supercritical CO2 compander designed, built, tested, and supplied by the authors’ company. The compander is applied in a Brayton cycle to recover waste heat from a gas engine providing the output power to a generator connected to a gear box via a coupling. To design the heatrecovery cycle with the highest possible efficiency, a lowoperation temperature at the compressor inlet was required. At the given pressure, this leads to a subcooled fluid. With support from the client and additional internal studies, it was confirmed that this suction condition at the compressor inlet will lead to the lowest power consumption on the compression side. This, in turn, results in the highest cycle efficiency, in addition to a small machinery footprint. Therefore, the solution fits into marine applications or other projects which face space constraints. During the compression process, a phase change of the CO2 from the subcooled to the supercritical state occurs with a low temperature and density change. CFD simulations of the compression process were performed in advance, considering the real fluid behavior near the critical point. This paper presents the test results and a comparison with the CFD analysis.
description: Conference Proceedings of the European sCO2 Conference5th European sCO2 Conference for Energy Systems: March 14-16, 2023, Prague, Czech Republic, p. 244
title: 01|2020 - Ausgabe 3
Creators: name: :None
Publisher: name: DuEPublico: Duisburg-Essen Publications online, University of Duisburg-Essen, Germany
Year: 2020
Subjects: subject: 370

description: OpenSpaces: Zeitschrift für Didaktiken der Geographie, vol. 2020, no. 01
title: Influence of variations of flue gas and ambient temperature on the dynamics and performance of a MW scale supercritical CO2 waste heat to power unit
Creators: name: Olumayegun, Olumide
name: Marchionni, Matteo
name: Usman, Muhammad
name: Tassou, Savvas
Publisher: name: DuEPublico: Duisburg-Essen Publications online, University of Duisburg-Essen, Germany
Year: 2023
Subjects: subject: 620

description: Waste heat availability from many industrial plant can vary not only during start up and shut down of the process but also as a response to many other factors such as process control and varying demand of heat by diverse and distinct unit operations in the plant. Implementing heat recovery from exhaust waste heat for power generation purposes, therefore, requires knowledge of the variation in the mass flow rate and temperature of the waste heat as well as variations in other conditions that affect the performance of the power generation system such as the temperature and flow rate of the heat sink medium. This paper presents a numerical model and simulation results of the dynamic behaviour of a 2.0 MWe sCO2 power system, designed to recover heat from the exhaust gases of a cement manufacturing plant. The design employs an indirect heat recovery loop utilising thermal oil as the heat transfer medium and direct heat rejection from the CO2 gas cooler to the ambient. The results show that fluctuations in the exhaust gas conditions within the operating range of the sCO2 power system are damped by the large quantity of heat transfer fluid in the indirect heat transfer loop and do not present a significant challenge to the control of the conditions entering the turbine. On the other hand, the limited thermal mass of the gas cooler does not have the capacity to absorb significant quantities of thermal energy and as a result the response of the sCO2 system to variations in ambient temperature is much faster than the response to changes in exhaust gas temperature and flow rate. This will require a more sophisticated control strategy to ensure the sCO2 temperature at inlet to the compressor and other components remains within the design operating range.
description: Conference Proceedings of the European sCO2 Conference5th European sCO2 Conference for Energy Systems: March 14-16, 2023, Prague, Czech Republic, p. 252
Effect Of Goal Setting On Choice Reaction Time.
Creators: name: Gholami, Amin
name: Farokhi, Ahmad
Publisher: name: figshare
Year: 2022
Subjects: subject: 170114 Sport and Exercise Psychology
subject: FOS: Psychology
subject: 110604 Sports Medicine
subject: FOS: Health sciences

description: The purpose of this study was to examine the effect of I goal setting on choice reaction time (CRT). 50 male athlete students (19-23 yr.) from physical education Faculty of Tehran university were selected. 10 subjects were selected by simple random sampling method from 50 subjects as a base group (who did not participate in the main study). Then base group were tested on a CRT test and their scores mean recorded as base record. Other 40 subjects were tested on a choice reaction time test too and assigned to 4 conditions (personal, easy and difficult goal group and control group) by random assignment method. The difficult and easy goal was set far and close to base record and personal goal was set by subjects themselves. After 4 practice sessions groups were tested CRT test. Data analysis indicate significant difference between pre and post test means of groups (p<0.05). Conclusion: Goal setting can improve CRT meanwhile difficult goal is more effective than other methods and then personal goal and finally simple goal.
Investigating the potential mitigating effects of ecotourism to reduce the impact of local conflicts, illegal logging, and biodiversity loss in developing tropical countries
Creators: name: Jun, Xuan
Publisher: name: The University of British Columbia
Year: 2015

description: In recent decades, large expanses of rainforest in tropical countries have been deforested and degraded because of inappropriate forestry practices and conversion to other uses, such as agriculture and grazing. The governments that preside over these forestlands are eager to adopt land use strategies aimed at conserving forest resources and maintaining biodiversity. However, they face stiff resistance in the form of illegal logging, livelihood conflicts, and biodiversity loss that caused by inappropriate forest practices. The economic returns of reforestation are generally lower than timber harvesting. Moreover, for private companies, the incentives to engage in illegal logging activities are considerable. In addition, the lack of security regarding land tenure creates conflict between biodiversity is also a problem, one that is attributable to a lack of knowledge of conservation among local people. Introducing an ecotourism system represents one approach to protecting rainforests from illegal logging operations, reducing biodiversity loss and resource conflicts, and improving the quality of life for local residents. This essay will discuss possibilities of introducing ecotourism for most developing tropical countries.
title: Wirtschaft als schwieriger Themenbereich im österreichischen Geographie und Wirtschaftskunde-Unterricht?: Konsequenzen für Fortbildung und Ausbildung
Creators: name: Fridrich, Christian
Publisher: name: DuEPublico: Duisburg-Essen Publications online, University of Duisburg-Essen, Germany
Year: 2020
Subjects: subject: paradigms of economic education
subject: socio-economic education
subject: subject geography and economics
subject: Austria
subject: Paradigmen der ökonomischen Bildung
subject: sozioökonomische Bildung
subject: Fach Geographie und Wirtschaftskunde
subject: Österreich
subject: 370

description: The Austrian integration subject geography and economics has a strong convergence in socioeconomic education within its economic education. Economics is in this context understood as socially embedded, constituted and co-designable. In an empirical study (n = 527) on economic education in lower secondary education, it is examined, among other things, which economic subject teachers perceive as difficult to teach and for which groups of teachers what kind of teacher training is desired.
description: Das österreichische Integrationsfach Geographie und Wirtschaftskunde weist in der wirtschaftlichen Bildung eine starke Konvergenz zur sozioökonomischen Bildung auf. Wirtschaft wird als gesellschaftlich eingebettet, konstituiert und mitgestaltbar verstanden. In einer empirischen Studie (n=527) über wirtschaftliche Bildung an der Sekundarstufe I wird u. a. untersucht, welche wirtschaftlichen Themenbereiche von den Lehrpersonen warum als schwierig zu unterrichten wahrgenommen werden und welche Gruppen von Lehrpersonen welche Fortbildung wünschen.
description: OpenSpaces: Zeitschrift für Didaktiken der Geographie, vol. 2020, no. 0101|2020 - Ausgabe 3, p. 5
title: Design and Evaluation of Low Specific Speed Expander for Geothermal Energy Application
Creators: name: Patil, Abhay
name: Nielson, Jordan
name: Smith, Natalie
name: Weiss, Nathan
Publisher: name: DuEPublico: Duisburg-Essen Publications online, University of Duisburg-Essen, Germany
Year: 2023
Subjects: subject: 620

description: The increased interest in harnessing geothermal energy requires more attention to exploring and optimizing the design space for expanders with a specific focus on efficiency and reliability under off-design conditions. This study focuses on the design of a low-specific speed radial expander with a targeted shaft power of 0.5 MW at 22,000 rpm for the geothermal application utilizing CO2 as a working fluid at 150°C. The design analysis includes exploration of the effects of loading and flow coefficients on low-specific speed expanders and iterative design optimization using coupled 3D design and CFD simulations. The 3D optimization shows that designing a turbine with higher loading enables optimal efficiency point (92% isentropic) with the desired off-design performance, however, with increased reaction thrust as the consequence of increased loading. Further CFD simulations of the entire expander control volume including front and back seals show that thrust force in the direction from outlet to inlet (upthrust) increases as the flow rates and rotational speeds reduce. The study concludes with a discussion about the control scheme for turbine start-up and the performance of low-specific speed turbines for geothermal applications.
description: Conference Proceedings of the European sCO2 Conference5th European sCO2 Conference for Energy Systems: March 14-16, 2023, Prague, Czech Republic, p. 264
title: Eine Frage der Redlichkeit: Zur Reflexion kritischen Geographieunterrichts im „postfaktischen Zeitalter“
Creators: name: Gudat, Georg
Publisher: name: DuEPublico: Duisburg-Essen Publications online, University of Duisburg-Essen, Germany
Year: 2020
Subjects: subject: postfactual age
subject: critical geography teaching
subject: truth
subject: interest in mediation
subject: Postfaktisches Zeitalter
subject: kritischer Geographieunterricht
subject: Wahrheit
subject: Vermittlungsinteresse
subject: 370

description: The article outlines the sociological analysis of the “postfactual age” as a social challenge with fundamental relevance for geography teaching. Starting from a critical understanding of education and a subsequent critical didactic of geography, the problem of the post facto will be discussed in the context of the interest in teaching mediation.
description: Der Beitrag skizziert die soziologische Zeitdiagnose des „postfaktischen Zeitalters“ als eine gesellschaftliche Herausforderung mit grundlegender Relevanz für den Geographieunterricht. Ausgehend von einem kritischen Bildungsverständnis und einer daran anschließenden kritischen Geographiedidaktik, wird die Problematik des Postfaktischen im Kontext des unterrichtlichen Vermittlungsinteresses diskutiert.
description: OpenSpaces: Zeitschrift für Didaktiken der Geographie, vol. 2020, no. 0101|2020 - Ausgabe 3, p. 25
title: Virtuelle Geomedienkurse: Ein eLearning-Angebot zur Integration geomedialer Inhalte in die fächerübergreifende Lehramtsausbildung der Goethe-Universität Frankfurt
Creators: name: Fuchs, Leon
name: Herrmann, Klaus
name: Rudzok, Torsten
Publisher: name: DuEPublico: Duisburg-Essen Publications online, University of Duisburg-Essen, Germany
Year: 2020
Subjects: subject: explanation videos
subject: geomedia
subject: student project
subject: Lernvideos
subject: Geomedien
subject: studentisches Projekt
subject: 370

description: "Virtual Geomedia Courses” (ViGeo) is a collective term for various projects by students of the department of Human Geography at Goethe University Frankfurt. It promotes geomedial education in university teacher study programs by producing videobased online-courses. The created courses are organised as a multipath-curriculum and are applied in several different university learning scenarios.
description: "Virtuelle Geomedienkurse” (ViGeo) ist ein Sammelbegriff für verschiedene Projekte von Studierenden des Instituts für Humangeographie der Goethe Universität Frankfurt. Das Projekt fördert geomediale Bildung in der fächerübergreifenden Lehramtsausbildung durch die Produktion videobasierter Online-Kurse. Die erstellten Kurse sind in einem Multipath-Curriculum angelegt und für verschiedene universitäre Lehr-Lern-Szenarien akkreditiert.
description: OpenSpaces: Zeitschrift für Didaktiken der Geographie, vol. 2020, no. 0101|2020 - Ausgabe 3, p. 36
The Impact of Poverty on Participation in Extracurricular Activities
Creators: name: Burkhardt, Randi
Publisher: name: Maryland Shared Open Access Repository
Year: 2016
Subjects: subject: Education -- Research papers (Graduate).

description: The purpose of this descriptive study was to determine if poverty negatively impacts
participation in extracurricular activities based on student responses. A 5 question survey was 
given anonymously to 279 middle school students to determine if their perspectives supported 
research. Results of this descriptive study were not in alignment 
with research. There were not a 
significant number of students who provided cost as the reason why they do not participate, 
which would have supported the research. Research on this topic should continue because it has 
been established in previous studies 
that poverty does have a negative impact on participation of 
extracurricular activities.
Using Metacognitive Instruction to Improve Reading Comprehension
Creators: name: Harman, Tiana
Publisher: name: Maryland Shared Open Access Repository
Year: 2016
Subjects: subject: Metacognition
subject: Reading Comprehension
subject: Elementary
subject: Education -- Research papers (Graduate).

description: The purpose of this study was to determine the effect on reading comprehension of explicitly teaching metacognitive strategies to 20 second graders who were reading on or above grade level.  Participants were taught metacognitive strategies and reminded to use them with a bookmark intervention.  Pre and post intervention scores on a comprehension assessment created by the researcher were compared using a t-test for dependent samples.  Participants’ comprehension scores increased significantly after they used the bookmark to apply explicitly taught metacognitive strategies.   The increase in mean total scores of 1.6 points (pretest mean= 4.15 to posttest mean = 5.75) was significant at the p < .000 level and sub-scores regarding comprehension within and about the text also increased significantly. These results suggest the think-mark bookmark intervention may help improve reading comprehension in primary students by encouraging metacognitive strategy use.
Review of Lubricant Viscosity Impact on Vibration Response in Rolling Element Bearings
Creators: name: Gaurav Deshpande, Vishal Kadam, Priti Yalagi, Sumit Kshirsagar, Yogesh Shete
Publisher: name: Zenodo
Year: 2025

description: This review article critically examines the impact of lubricant viscosity on the vibration response of rolling element bearings, synthesizing findings from experimental and theoretical studies. Lubricant viscosity plays a pivotal role in determining the thickness and stability of the lubricant film, which in turn influences bearing damping, friction, and vibration characteristics. Higher viscosity lubricants generally enhance damping and reduce vibration amplitudes at low speeds, while at higher speeds, increased viscosity can elevate vibration energy. The review discusses the interplay between lubricant properties, operational conditions, and bearing dynamics, highlighting the importance of viscosity selection for optimal performance and reliability. Insights from vibration analysis techniques are also presented, emphasizing their role in monitoring bearing health and diagnosing lubrication-related issues.
title: Design of Compact Radial Turboexpanders for sCO2 Power Systems
Creators: name: Romei, Alessandro
name: Persico, Giacomo
name: Biliotti, Davide
name: Milani, Alberto
name: Lottini, Fabrizio
name: Marconcini, Michele
Publisher: name: DuEPublico: Duisburg-Essen Publications online, University of Duisburg-Essen, Germany
Year: 2023
Subjects: subject: 620

description: The development of novel conversion technologies for recovering waste heat is one of the technical goals of the European Commission, considering the large amount of thermal energy discharged by industrial processes in Europe. The recently launched EU-H2020 project CO2OLHEAT aims at contributing to industrial waste heat recovery by developing a novel sCO2 power system of 2 MW power capacity. Considering the wide range of conditions featuring waste heat recovery applications (in terms of both flue gas temperature and flow rate), as well as the flexibility of operation required by such installations, a simple recuperative cycle was selected for the CO2OLHEAT plant. The system, however, features a relatively non-conventional multi-shaft configuration, composed of a radial-inflow turboexpander, which drives the near-critical compressor, and by an axial-flow turbine to generate the 2 MW output power. The present study focuses on the design of the radial turbines of the CO2OLHEAT turbo-expander. Due to the low volumetric flow rate, the turbine features small size and, therefore, significant aerodynamic challenges have to be considered in the design process. A preliminary design of the machine was performed by applying a mean-line approach, then a conceptual design of the bladings and of the meridional channels was performed by resorting to industrial in-house database and criteria. Once the turbine design was finalized, the aerodynamics and performance of the machine were evaluated by applying two different computational fluid dynamic simulation tools, which exhibit remarkable agreement. One CFD tool was then used to investigate and quantify the impact of wheel tip clearance and surface roughness, as well as to quantify the deviation with respect to mean-line predictions. Relevant quantitative data are extracted as well as aerodynamic indications are inferred, with the aim of establishing a reference for the future design of compact sCO2 radial turbines.
description: Conference Proceedings of the European sCO2 Conference5th European sCO2 Conference for Energy Systems: March 14-16, 2023, Prague, Czech Republic, p. 272
Supplementary document for Enhanced Stretchability towards Flexible and Wearable Reflective Display Coating using Chalcogenide Phase Change Materials - 6160209.pdf
Creators: name: Tan, Qingshan
name: Chang, YaHui
name: He, Qiang
name: Tong, Hao
name: Miao, Xiangshui
Publisher: name: Optica Publishing Group
Year: 2025
Subjects: Uncategorized

description: Supplement the crack statistical method and other related issues
Vaseux Lake Canadian Wildlife Service burn
Creators: name: Erasmus, Hans
Publisher: name: The University of British Columbia
Year: 2015

description: This study was done to quantify the intensity and severity of the Vaseux Lake Canadian Wildlife Service prescribed burn in March 2013. Onsite measurements of fuel moisture content were compared to predicted Fire Weather Indices (FWI) for the Fine Fuel Moisture Code (FFMC) and Drought Moisture Code (DMC). Fire intensity was determined from the thermocouple temperature profiles. Fire severity was quantified through consumption of large woody fuels (diameter ≥ 2.6 cm) and change in basal area, mortality, bole char, uphill char height, and crown scorch on trees. We found that the fire weather indices indicated an FFMC of 85 and a DMC of 116. Peak fire temperatures ranged from 38ºC to 762ºC, and burn times above ambient temperature ranged from 10 to 600 minutes. Fire consumption reduced the fuel load by 41.2%. The 100hr fuels (2.6-7.5cm) made up the largest proportion of woody fuels, of which 29% were totally consumed. Tree mortality was limited to 3 ponderosa pines and 5 Douglas-fir. Tree indicators included 82.5% average charring around the circumference of the base, 193cm average uphill char height, and 32.7% average crown scorch. This imperial data can be used as a baseline for long-term monitoring of the site and to prescribe future fire treatments.
title: QGIS - Modèle de mise en page d'une carte (QGIS 3)
Creators: name: Coutelier, Clément
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2025
Subjects: subject: SIG
subject: système d'information géographique
subject: QGIS
subject: Mise en page

description: Cette fiche détaille une méthode pour créer un modèle de mise en page puis son utilisation pour construire de nouvelle cartes. S’appuyer sur un modèle de mise en page permet un gain de temps lorsque l’on doit créer un ensemble de cartes pour un même projet, de générer des cartes homogènes dans leur habillage, en paramétrant une seule fois les formes et les emplacements des cartes, légendes, titres, barres d’échelle, flèches nord, logos, etc.
title: Verordnete Neutralität
Creators: name: Bauer, Itta
name: Huber, Jonas
name: Lerch, Pranjali
Publisher: name: DuEPublico: Duisburg-Essen Publications online, University of Duisburg-Essen, Germany
Year: 2020
Subjects: subject: 370

description: Bestehend aus: Huber, Jonas & Lerch, Pranjali: Verordnete Neutralität (Comic). - S. 40-44 Bauer, Itta: Comic Strip Geographies. - S. 45-46
description: OpenSpaces: Zeitschrift für Didaktiken der Geographie, vol. 2020, no. 0101|2020 - Ausgabe 3, p. 40
Implementing a Behavior Modification Plan for a Student with Emotional Behavior Disorder
Creators: name: Schattall, Laurie
Publisher: name: Maryland Shared Open Access Repository
Year: 2016
Subjects: subject: emotional behavior disorder
subject: behavior modification plan
subject: Education -- Research papers (Graduate).

description: The purpose of this study was to examine the impact of a behavior management program that would allow for a student with emotional needs and behavior concerns to better comply with the
daily routine and classroom activities throughout the school day.  Specifically, the study was interested in how the subject would adjust behavior when goals were implemented and rewards provided for safe and cooperative behavior.
Il gatto e la fiaba: due obiezioni a L’animale che dunque sono di Derrida
Creators: name: Mazzeo, Marco
Publisher: name: Animot
Year: 2016

description: L’articolo propone una revisione critica di due aspetti di un testo fondamentale per la discussione contemporanea circa l’animalità, L’animale che dunque sono di Jacques Derrida. In primo luogo nel libro emerge una diffidenza poco produttiva, a volte latente ma non per questo marginale, verso il linguaggio verbale (ad esempio nei confronti della favola). In secondo luogo, derrida assume, suo malgrado una idea della percezione animale e umana di tipo tradizionale, legata sostanzialmente alla vista, che rischia di falsare qualsiasi proposta successiva di incontro (e scontro) tra le diverse forme di vita. L’articolo si conclude con la formulazione sintetica e necessariamente lacunosa di due linee di ricerca alternative riguardo linguaggio e percezione.
description: Animot, N. 1 (2014)
Cattle ranching and soybean cultivation as drivers of deforestation in the Brazilian Amazon, and on-going policy responses
Creators: name: Cao, Siyu
Publisher: name: The University of British Columbia
Year: 2015

description: Deforestation in the Brazilian Amazon causes reduction of tropical forest, loss of genetic resources and biodiversity, as well as the decreasing ability of carbon sequestration. It owned the name of “the lungs of the world”, because it can help regulate the climate change, maintain carbon stocks and provided fresh oxygen. However, 20% of these areas have gone forever due to different social, political and economic purposes, especially the development of cattle ranching and soybean industry. With the development of exports and imports, the job opportunities in related industry are provided, and construction of infrastructures benefits the local people, in order to improve the living quality. Adversely, the destruction is gong along. The disturbance of ecosystems, the water contamination, the increasing fire risk and lost homeland for indigenous people never stop. Furthermore, the latent lost can’t be recorded and calculated, such as the extinction of species (Blue Planet Biomes, 2003). Comprehensive understanding of the causes and outcomes of deforestation in the Brazilian Amazon will be helpful to make appropriate management decisions.
title: CO2 purification and purity control for the sCO2 experimental loop at Rez: a summary of the test results
Creators: name: Berka, Jan
name: Hlinčík, Tomáš
name: Purkarová, Eliška
name: Vagenknechtová, Alice
name: Ballek, Jakub-Vojtěch
Publisher: name: DuEPublico: Duisburg-Essen Publications online, University of Duisburg-Essen, Germany
Year: 2023
Subjects: subject: 620

description: In project No. TK02030023, titled ‘Purification and purity control of CO2 gas in power cycles’ (funded by the Technology Agency of the Czech Republic [TA CR]), methods for gas purification in an sCO2 loop were proposed and tested. First, moisture separation was investigated using adsorption techniques, and the initial results of the experiment are presented in this paper.
description: Conference Proceedings of the European sCO2 Conference5th European sCO2 Conference for Energy Systems: March 14-16, 2023, Prague, Czech Republic, p. 294
A review of the effects of climate and weather on mountain pine beetle population dynamics and impacts of climate change on range expansion in Canada
Creators: name: Zhang, Zhaochang
Publisher: name: The University of British Columbia
Year: 2015

description: The recent past and future range expansion of mountain pine beetle, Dendroctonus ponderosae Hopkins (Coleoptera: Curculionidae: Scolytinae), are reviewed on the basis of the review of the direct and indirect effects of climate and weather on beetle population dynamics. The recent warming has resulted in decreased cold-induced mortality, increased adaptive seasonality, and reduced host-tree defense, and has increased climatically benign habitats for the beetle. There has been a significant range expansion of mountain pine beetle in western Canada in the recent decades, posing a risk of future infestation in the adjacent boreal jack pine (Pinus banksiana Lamb.) forests.
title: Design and Computational Assessment of a Supercritical CO2 Compressor for Waste Heat Recovery Applications
Creators: name: Romei, Alessandro
name: Persico, Giacomo
name: Gaetani, Paolo
name: Bellobuono, Ernani
name: Toni, Lorenzo
name: Valente, Roberto
name: Milani, Alberto
Publisher: name: DuEPublico: Duisburg-Essen Publications online, University of Duisburg-Essen, Germany
Year: 2023
Subjects: subject: 620

description: The development of novel technical solutions for the effective recovery of waste heat is crucial for making accessible the enormous amount of thermal energy released by industrial processes, thus supporting the EU energy strategy. To this end, the EU-H2020 project CO2OLHEAT aims at developing, and demonstrating in a real industrial environment, a novel sCO2 power unit of 2-MW capacity recovering energy from flue gases at 400 °C. The thermo-economic optimization of the system and the complexity of its implementation led to select a simple recuperative cycle for the CO2OLHEAT unit, which features a relatively unconventional multi-shaft configuration where the sCO2 compressor is driven by a dedicated radial expander, while the electrical power is generated via a separated axial turbine. The present study focused on the design and computational assessment of the compressor for the CO2OLHEAT system. The thermodynamic optimization of the cycle led to an overall pressure ratio slightly above 2.5, delivered with a two-stage centrifugal compressor. As typically found in sCO2 power systems, the thermodynamic state of the fluid at the machine intake (P = 85 bar; T = 32°C) is close to the critical point and to the saturation curve; therefore, the first stage of the machine demands a dedicated aero-thermodynamic design, which can account for the effects of non-ideal thermodynamics and of the potential onset of two-phase flows. The paper discusses the conceptual aero-mechanical design of the compressor and then focuses on its performance assessment over the full operating range via Computational Fluid Dynamics. Two alternative flow models are considered, the first one based on the experimentally-validated barotropic fluid representation, while the second one featuring a complete thermodynamic model which assumes homogeneous equilibrium between the phases. The approaches provide similar outcomes, showing that the compressor fulfills the system requirement and guarantees large rangeability.
description: Conference Proceedings of the European sCO2 Conference5th European sCO2 Conference for Energy Systems: March 14-16, 2023, Prague, Czech Republic, p. 301
title: Reflexion der Forscher*innenrolle im Forschungsprozess. Ein Workshop-Bericht
Creators: name: Pettig, Fabian
name: Lippert, Sabine
name: Schurig, Stephan
Publisher: name: DuEPublico: Duisburg-Essen Publications online, University of Duisburg-Essen, Germany
Year: 2020
Subjects: subject: 370

description: OpenSpaces: Zeitschrift für Didaktiken der Geographie, vol. 2020, no. 0101|2020 - Ausgabe 3, p. 47
What makes a difference in ecological restoration in China and a related case study of sloping land conversion program
Creators: name: Chen, Yabo
Publisher: name: The University of British Columbia
Year: 2015

description: For many years, China has devoted to restoring ecosystem to meet human demands. According to the Society for Ecological Restoration (SER), ecological restoration (ER) is defined as “the process of assisting the recovery of an ecosystem that has been degraded, damaged, or destroyed” (SER, 2004). It is a young field integrating theory and knowledge from various disciplines, including the biological, physical, and social sciences as well as the humanities (Howell et al., 2012). Triggered by increasingly severe problems of soil erosion, land degradation, ﬂooding, dust storms, habitat loss, and etc., the Chinese government has been undertaking several unprecedented ecological restoration programs (ERPs). This essay is to analyze what makes a difference to ER in China. I will discuss in three aspects: Chinese concepts of man and nature, population, and economic development. In the end, I will also take a look at the resulting ER situations in China. This section includes a brief discussion of current China ERPs and an assessment of Sloping Land Conversion Program (SLCP), which is one of the most famous ERPs in China.
Illuminating the Mission: Seeing the New Evangelization in the Saint John's Bible
Creators: name: Guajardo, Natalie
Publisher: name: Maryland Shared Open Access Repository
Year: 2016
Subjects: Saint John's Bible
Catholic Church
New Evangelization
evangelism
Christian
art
books
Bible

description: The Saint John’s Bible is the first completely hand written and illuminated Bible commissioned by a Benedictine order since the invention of the printing press. Members of St. John’s Abbey in Collegeville, Minnesota worked with renowned calligrapher, Donald Jackson, and several artists and scribes on the extensive project, completing the last of the seven volumes in 2011. This research recognizes the Saint John’s Bible as a marvel of artistic mastery but also draws ties between the Bible and the Catholic Church’s New Evangelization. First defining and outlining goals of the New Evangelization, this project goes on to show how the intentions of the Bible’s creators, its message, and its audience align with the greater evangelical goals of the Catholic Church. This research also includes possible shortcomings for the Saint John’s Bible as a tool of evangelism and suggestions for solutions and further study.
Animalità e desiderio. Storie di gatte, e non solo
Creators: name: Cimatti, Felice
Publisher: name: Animot
Year: 2016

description: Nella categoria dell'animalità la filosofia e la psicoanalisi hanno incluso gli animali, ovviamente, ma anche le donne e i bambini. L’animale è quel vivente che sfugge al controllo, e per questo è pericoloso, e quindi da rinchiudere in uno spazio apposito, lo zoo (oppure la famiglia patriarcale, o la scuola). ma proprio perché l’animale non si controlla è profondamente invidiato. In questo lavoro si percorrono alcuni dei senti- menti che – in modo esplicito o nascosto – suscita l’animalità.
description: Animot, N. 1 (2014)
title: Reflexion zur Auseinandersetzung mit der “Neuen Rechten” in der Hochschule.: Ein Workshop-Bericht
Creators: name: Uhlig, Tom
name: Dorsch, Christian
name: Pokraka, Jana
Publisher: name: DuEPublico: Duisburg-Essen Publications online, University of Duisburg-Essen, Germany
Year: 2020
Subjects: subject: 370

description: OpenSpaces: Zeitschrift für Didaktiken der Geographie, vol. 2020, no. 0101|2020 - Ausgabe 3, p. 52
La repressione logocentrica contro gli animali. Cosa identifica l’antispecismo derridiano?
Creators: name: Llored, Patrick
Publisher: name: Animot
Year: 2016

description: La decostruzione derridiana deve essere letta come una filosofia animale prima di essere interpretata come un pensiero che si occupa della vita umana. La presenza della questione animale sin dalle origini del pensiero di Jacques derrida è l’oggetto di questo testo programmatico che propone un’interpretazione radicalmente nuova del lavoro concettuale di derrida, che ha senso nella presa d’atto fenomenologica, politica ed etica della questione animale. Questo concetto derridiano (differenza, pista, logocentrismo, fallogocentrismo, carnofallogocentrismo, scrittura, repressione logocentrica, scomposizione del senso, zoopolitica e democrazia...) si chiarisce in rapporto alla questione dell’animale che occupa, così, il posto centrale e non più marginale nella decostruzione. Il pensiero animale derridiano si rivela, dunque, essere un contributo di grande importanza al problema dell’antispecismo in filosofia dimostrando l’idea che è la totalità del nostro mondo che va decostruita, se si vuole che un evento degno di questo nome si realizzi: una democrazia animale.
description: Animot, N. 1 (2014)
Supplementary document for Polarizer-free measurement of the full Stokes vector using a fiber-coupled superconducting nanowire single photon detector with a polarization extinction ratio of ~2 - 6160463.pdf
Creators: name: Fei, Yue
name: Ji, Tianhao
name: Zhu, Guanghao
name: Zhang, Labao
name: Zhang, Lijian
name: tan, jingrou
name: chen, qi
name: Guan, Yanqiu
name: Yin, Rui
name: Wang, Hao
Publisher: name: Optica Publishing Group
Year: 2025
Subjects: Uncategorized

description: Supplemental document of theory model and experimental details
Derrida e il desiderio di porre fine a ogni vita. La decostruzione, De Landa e la vivacità degli oggetti
Creators: name: Iveson, Richard
Publisher: name: Animot
Year: 2016

description: In questo saggio analizzo l’importanza, mai tramontata, della nozione derridiana di traccia, sostenendo che un impegno nei riguardi di questo “quasi-concetto” ci obblighi necessariamente a porci un’ulteriore domanda sul perché Jacques Derrida costruisca un confine abissale tra “esseri viventi” e “cose non viventi” – una dicotomia che manuel de Landa descrive come “sciovinismo biologico”. Mentre questo costituisce uno schema ancora più basico di quello che conferisce status ontologico eccezionale al solo animale umano, anche la nozione di traccia di derrida decostruisce tale dominante zoocentrismo. Anche se Derrida si rifiuta coerentemente di affrontarne le implicazioni, sostengo qui che è solo decostruendo la dicotomia vivente-non vivente che la prassi decostruttiva materialista e postumanista diventa possibile, in modo particolare quella che afferma il potenziale di bodyings veramente radicali. Questo saggio inizia con l'esame di due recenti tentativi – uno negativo (Bernard Stiegler) e uno positivo (Martin Hägglund)– di mettere alla prova i limiti che Derrida attribuisce alla traccia, per poi passare a esaminare in che modo una comprensione estesa della traccia si possa ricondurre ai recenti sviluppi del darwinismo filosofico e della biologia sintetica. In conclusione, leggendo Derrida alla luce del recente lavoro di Manuel De Landa, sostengo che solo una rigorosa decostruzione dello sciovinismo biologico ci permette di comprendere come il materialismo meccanicistico di darwin di fatto assicuri l’emergere di una storia non lineare, cioè di una storia di un mondo “completamente popolato” in cui ogni esistente è soggetto alla traccia, e quindi a ciò che Derrida definisce la modalità spettrale del “io non so”.
description: Animot, N. 1 (2014)
title: Rezension: „Pilotinitiative Wirtschafts- und Finanzkompetenz. Eine Studie zur Erhebung des Status-quo und zur Identifikation von potenziellen Handlungsfeldern“
Creators: name: Lehner, Michael
name: Gruber, Dominik
Publisher: name: DuEPublico: Duisburg-Essen Publications online, University of Duisburg-Essen, Germany
Year: 2020
Subjects: subject: 370

description: OpenSpaces: Zeitschrift für Didaktiken der Geographie, vol. 2020, no. 0101|2020 - Ausgabe 3, p. 65
Come non mangiare. Decostruzione e umanismo
Creators: name: Wood, David
Publisher: name: Animot
Year: 2016

description: Il saggio è una delle prime ricognizioni del pensiero di Jacques Derrida a proposito degli animali ed è basato sull’intervista del filosofo con Jean-Luc Nancy dal titolo “Il faut bien manger”. Derrida parte dalla visione di Heidegger dell’animale, attribuendogli un umanesimo residuale, e una dedizione totale alla soggettività umana. Derrida, con la sua enfasi interrogativa, prova a destituire tale soggetto attraverso il “carnologofallocentrismo” attraverso il quale la responsabilità umana apre all’animale. L’autore sostiene (contro Derrida) che il vegetarianesimo non ha bisogno di essere una scusa per evitare di affrontare il carnologofallocentrismo più profondo, ma un passo concreto per aprire una prospettiva ampia su questo tema. Derrida sostiene di essere un vegetariano nello spirito. Potrebbe aver ragione. Ma certamente ridursi allo spirito è una reale fuga.
description: Animot, N. 1 (2014)
The Effect Of Three Warm Up Protocols On Simple And Choice Reaction Time.
Creators: name: Naeimikia, Malihe
name: FAROKHI, A
name: Gholami, Amin
Publisher: name: figshare
Year: 2022
Subjects: subject: 110604 Sports Medicine
subject: FOS: Health sciences
subject: 170114 Sport and Exercise Psychology
subject: FOS: Psychology

description: The purpose of present investigation was to assess the effect of three warm up programs on simple and choice reaction time. 32 nonathlete girl students (19-23 yr) of Tehran university were selected and randomly assigned to four groups: static, dynamic stretch, compound (slow runing, stretch and dynamic movement). All groups performed a simple and choice reaction time test with SW8 instrument before and after of performing warm up protocols. The results of analysis showed that there is no significant difference between prestest and posttest scores means in SRTof groups. But there is a significant difference between pretest and posttest scores means in CRT of dynamic stretch and compound groups ( p < 0/05) and there is no significant difference between pretest and posttest scores means in CRT of static stretch group. In addition, there is a significant difference (p < 0/05) between all groups in CRT (post test) The results of present study showed that warm up may improve CRT,meanwhile compound wann up program is more effective than two other, but totally warms up does not affect on SRT.
title: Rezension: „Was ist gute ökonomische Bildung? Leitfaden für den sozioökonomischen Unterricht.“
Creators: name: Lehner, Michael
Publisher: name: DuEPublico: Duisburg-Essen Publications online, University of Duisburg-Essen, Germany
Year: 2020
Subjects: subject: 370

description: OpenSpaces: Zeitschrift für Didaktiken der Geographie, vol. 2020, no. 0101|2020 - Ausgabe 3, p. 70
Experimental Analysis of Effect of Lubricant Viscosity on Vibration Behaviour of Rolling Element Bearing
Creators: name: Gaurav Deshpande, Vishal Kadam, Priti Yalagi, Sumit Kshirsagar, Yogesh Shete
Publisher: name: Zenodo
Year: 2025

description: This research article presents an experimental analysis of how lubricant viscosity impacts the vibration behavior of rolling element bearings. Using an FFT analyzer, the study investigates the vibrational responses under varying conditions, utilizing three lubricant grades: NLGI 1, NLGI 2, and NLGI 3. The bearings were tested under three different loads (3 kg, 6 kg, and 9 kg) and three rotational speeds (300 rpm, 600 rpm, and 900 rpm). The analysis revealed that lubricant viscosity significantlyinfluences the vibration characteristics of the bearings. Among the tested lubricants, NLGI 2 demonstrated superior performance and stability across all test conditions. This grade effectively minimized vibration amplitudes, providing better-damping properties compared to NLGI 1 and NLGI 3. The findings suggest that selecting the appropriate lubricant viscosity is crucial for optimizing the operational performance and longevity of rolling element bearings, particularly in varying load and speed conditions. This research contributes valuable insights for industries aiming to enhance machinery reliability through informedlubrication strategies.
Using a genotyping-by-sequencing (GBS) approach to elucidate population structure in Garry Oak (Quercus garryana)
Creators: name: Degner, Jonathan C.
Publisher: name: The University of British Columbia
Year: 2014

description: A pilot study was performed to assess the usability of the genotyping-by-sequencing (GBS) method to perform population genetic analyses across the species range of Garry oak (Quercus garryana). Ninety-two individuals representing 11 populations were sequenced in a single multiplexed GBS library, which resulted in 18.1 Gigabases of sequence data covering 20 Megabases of unique sequences for 87 of the 92 individuals sequenced, which is estimated to represent ~2% of the genome. 20,751 high-quality single nucleotide polymorphisms (SNPs) were obtained, which were used to determine population differentiation and genetic structure. A more-refined set of 2,194 SNPs was developed and used for Bayesian genetic clustering analysis. Clustering analyses revealed two distinct genetic clusters, one corresponding to Q. garryana var. garryana and the other to both vars. semota and breweri. Some evidence supports the presence of additional hierarchical structure within both of these clusters, although there was no evidence to support the taxonomic division between vars. semota and breweri. Overall FST averaged 0.091, and was strongly correlated with physical distance (R²=0.93, p<0.0001). Pair-wise FST was significantly higher between populations of different genetic clusters than among them. Heterozygosity was negatively correlated with latitude (R²=0.72, p=0.001), and was higher in vars. semota and breweri than in var. garryana (p<0.0001). Inbreeding coefficient was also negatively correlated with latitude (R²=0.65, p=0.003). Genetic distance was positively correlated at distances up to 400 km (Mantel test, 10,000 permutations; p<0.001) and negatively correlated beyond 1000km (p<0.001). The success of sequencing and analyses using GBS merits expansion of this pilot project into a full-scale study with higher representation of sample size both within and among populations.
title: 01|2019 - Ausgabe 2
Creators: name: :None
Publisher: name: DuEPublico: Duisburg-Essen Publications online, University of Duisburg-Essen, Germany
Year: 2019
Subjects: subject: 370

description: OpenSpaces: Zeitschrift für Didaktiken der Geographie, vol. 2019, no. 01
J. Derrida: umanità/animalità, ontologia sociale e accelerazionismo
Creators: name: Caffo, Leonardo
Publisher: name: Animot
Year: 2016

description: In questo articolo analizzo il contributo di Jacques Derrida alla teoria dell’animalità. Ciò che sostengo è che le sue tesi possano essere funzionali all’odierno dibattito a proposito della costruzione della realtà sociale; Derrida argomenta, infatti, in favore dell’umano come concetto sociale e – sulla base di questa sua tesi – basandomi sulle nuove correnti del realismo speculativo come l’accelerazionismo, cercherò di articolare alcune questioni intorno al cambiamento sociale nelle sue varie forme. Tesi principale dell’articolo è che solo rimettendo in discussione l’antropocentrismo, anche attraverso il riconoscimento di un realismo filosofico di sfondo, è possibile discutere correttamente di costruzione del sociale – processo che deve partire dalla nostra natura animale (oggetto naturale), piuttosto che da quella di cittadini (oggetto sociale).
description: Animot, N. 1 (2014)