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1دورية أكاديمية
المؤلفون: Wurhofer, Daniela, Neunteufel, Julia, Strumegger, Eva-Maria, Höppchen, Isabel, Mayr, Barbara, Egger, Andreas, Sareban, Mahdi, Reich, Bernhard, Neudorfer, Michael, Niebauer, Josef, Smeddinck, Jan David, Kulnik, Stefan Tino
المصدر: Frontiers in Digital Health ; volume 5 ; ISSN 2673-253X
مصطلحات موضوعية: Health Informatics, Medicine (miscellaneous), Biomedical Engineering, Computer Science Applications
الوصف: Background Shared decision making (SDM) between healthcare professionals and persons with CVD can have a positive impact on motivation, adherence, or sustainability regarding long-term goals and integration of cardiovascular disease (CVD) rehabilitation in the everyday lives of persons with CVD. SDM can foster the transition between regular heart-healthy activity at rehabilitation facilities and more independent activity at home, but it is often challenging to implement SDM given limited time and resources, e.g., in the daily practice of rehabilitation. Digital tools can help but must be appropriately tailored for situated use and user needs. Objective We aimed to (1) describe in how far SDM is manifested in the situated context when using a digital tool developed by our group, and, based on that, (2) reflect on how digital health tools can be designed to facilitate and improve the SDM process. Methods In the context of a field study, we investigated how SDM is already naturally applied and manifested when using a digital tool for joint physical activity planning in cardiac rehabilitation in clinical practice. In a two-week qualitative study, we collected data on expectations, experiences and interactions during the use of a digital health tool by seven persons with CVD and five healthcare professionals. Data was collected by means of observations, interviews, questionnaires and a self-reported diary, and analysed with a particular focus on episodes related to SDM. Results We found that SDM was manifested in the situated context to limited extent. For example, we identified high improvement potential for more structured goal-setting and more explicit consideration of preferences and routines. Based on mapping our findings to temporal phases where SDM can be adopted, we highlight implications for design to further support SDM in clinical practice. We consider this as “SDM supportive design in digital health apps,” suggesting for example step-by-step guidance to be used during the actual consultation. Conclusion ...
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2دورية أكاديمية
المؤلفون: Klopčič, Nejc, Regenfelder, René, Hafner, Thomas, Egger, Andreas, Lechner, Florian, Winkler, Franz, Trattner, Alexander
المساهمون: Osterreichische Forschungsforderungsgesellschaft mbH
المصدر: International Journal of Hydrogen Energy ; volume 62, page 1030-1042 ; ISSN 0360-3199
مصطلحات موضوعية: Energy Engineering and Power Technology, Condensed Matter Physics, Fuel Technology, Renewable Energy, Sustainability and the Environment
الإتاحة: https://doi.org/10.1016/j.ijhydene.2024.03.097Test
https://api.elsevier.com/content/article/PII:S0360319924009297?httpAccept=text/xmlTest
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3دورية أكاديمية
المؤلفون: Nader, Christina, Lammer, Judith, Egger, Andreas, Berger, Christian, Sitte, Werner, Grogger, Werner, Merkle, Rotraut, Maier, Joachim, Bucher, Edith
المساهمون: FFG
المصدر: Solid State Ionics ; volume 406, page 116474 ; ISSN 0167-2738
مصطلحات موضوعية: Condensed Matter Physics, General Materials Science, General Chemistry
الإتاحة: https://doi.org/10.1016/j.ssi.2024.116474Test
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4دورية أكاديمية
المؤلفون: Pretschuh, Patrick, Egger, Andreas, Brunner, Roland, Bucher, Edith
المصدر: Fuel Cells ; volume 23, issue 6, page 377-386 ; ISSN 1615-6846 1615-6854
الوصف: Strontium segregation (coupled to phase decomposition and impurity poisoning) and electrode delamination are two of the most important degradation mechanisms currently limiting the long‐term stability of solid oxide fuel cell and electrolysis cell (SOFC and SOEC) air electrodes. The present study aims to demonstrate that air electrodes made of entropy‐stabilized multi‐component oxides can mitigate these degradation mechanisms while providing excellent cell performance. A SOEC utilizing La 0.2 Pr 0.2 Nd 0.2 Sm 0.2 Sr 0.2 CoO 3‐δ (LPNSSC) as an air electrode delivers −1.56 A/cm 2 at 1.2 V at 800°C. This performance exceeds that of a commercial cell with La 0.6 Sr 0.4 CoO 3‐δ (LSC) air electrode, which reaches −1.43 A/cm 2 . In a long‐term electrolysis test, the LPNSSC cell shows stable performance during 700 h, while the LSC cell degrades continuously. Post‐mortem analyses by scanning electron microscopy‐energy dispersive X‐ray spectroscopy indicate complete delamination of the LSC electrode, while LPNSSC shows excellent adhesion. The amount of secondary phases formed (esp. SrSO 4 ) is also much lower in LPNSSC compared to LSC. In conclusion, the high‐entropy perovskite LPNSSC is a promising option for air electrodes of solid oxide cells. While LPNSSC can compete with ‒ or even outperform ‒ LSC air electrodes in terms of electrochemical performance, it could be particularly advantageous in terms of long‐term stability in SOEC mode.
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5دورية أكاديمية
المؤلفون: Egger, Andreas, Eisbacher‐Lubensky, Sarah, Sampl, Kathrin, Subotić, Vanja, Hochenauer, Christoph, Sitte, Werner, Bucher, Edith
المصدر: Fuel Cells ; volume 23, issue 6, page 387-398 ; ISSN 1615-6846 1615-6854
الوصف: In this work, fundamental material properties of compounds in the system (La,Pr) 2 (Ni,Co)O 4+δ as well as their performance as air electrodes in solid oxide electrolysis cells were investigated. Nickelates co‐doped with Pr and Co were characterized on a material basis by means of X‐ray diffraction and thermogravimetry. Conductivity and conductivity relaxation measurements were performed in order to obtain the electronic conductivity as well as the chemical surface exchange coefficient and the chemical diffusion coefficient of oxygen as a function of temperature and oxygen partial pressure. These parameters can be regarded as the most essential properties at the material level required to assess the suitability of mixed ionic‐electronic conducting ceramics for application as air electrode in solid oxide cells. The electrode performance of the materials was then tested on fuel electrode‐supported button cells at 800°C. The electrodes were applied by screen‐printing and the effect of varying the Pr‐content and Co‐content of the electrode powder was investigated. Cell tests were performed by means of current‐voltage measurements in electrolysis mode. While no significant impact of Pr‐doping on the investigated material properties was observed, the electrode performance of Pr‐containing materials was significantly better than for the Pr‐free compound, which has been discussed in detail.
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6دورية أكاديميةOxygen exchange and transport properties of the first-order Ruddlesden-Popper phase La2Ni0.9Co0.1O4+
المصدر: Solid State Ionics ; volume 397, page 116255 ; ISSN 0167-2738
مصطلحات موضوعية: Condensed Matter Physics, General Materials Science, General Chemistry
الإتاحة: https://doi.org/10.1016/j.ssi.2023.116255Test
https://api.elsevier.com/content/article/PII:S0167273823001133?httpAccept=text/xmlTest
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7دورية أكاديمية
المؤلفون: Pretschuh, Patrick, Egger, Andreas, Paulachan, Priya, Schöggl, Johanna, Brunner, Roland, Bucher, Edith
المصدر: Fuel Cells; Jun2024, Vol. 24 Issue 3, p1-11, 11p
مستخلص: This study investigates the novel cobalt‐free high‐entropy perovskite, La0.2Pr0.2Nd0.2Sm0.2Sr0.2FeO3–δ (LPNSSF), as an air electrode material for solid oxide cells (SOCs). When testing a button cell with a single‐phase LPNSSF electrode, a current density of 0.55 A cm−2 is obtained at 0.7 V in fuel cell mode at 800°C. In order to mitigate the moderate electronic conductivity of LPNSSF, two approaches are explored. Incorporating a Co‐free highly conductive perovskite, LaNi0.6Fe0.4O3–δ (LNF), either as an LPNSSF–LNF composite electrode or as a current collector layer (CCL), enhances the performance to 0.61 and 0.66 A cm−2, respectively, under the same conditions. Microstructural features are studied by electron microscopy and show a rather dense structure of the CCL. Optimization of the current collector increases the current density further to 0.96 A cm−2 at 0.7 V in a 5 × 5 cm2 anode‐supported cell at 800°C. This cell exhibits good long‐term stability in electrolysis mode in H2‐H2O with 80% humidification. Continuous polarization of −0.69 A cm−2 is sustained for 1000 h, with an average degradation rate of 10 mV kh−1 after an initial run‐in phase. These findings demonstrate the promising performance and durability of LPNSSF as cobalt‐free SOC air electrode. [ABSTRACT FROM AUTHOR]
: Copyright of Fuel Cells is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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8مؤتمر
المؤلفون: Kratsch, Wolfgang, Stengel, Gregor, Egger, Andreas, Fehrer, Tobias
مصطلحات موضوعية: ddc:004
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9دورية أكاديمية
المؤلفون: Kulnik, Stefan Tino, Sareban, Mahdi, Höppchen, Isabel, Droese, Silke, Egger, Andreas, Gutenberg, Johanna, Mayr, Barbara, Reich, Bernhard, Wurhofer, Daniela, Niebauer, Josef
المصدر: Kulnik , S T , Sareban , M , Höppchen , I , Droese , S , Egger , A , Gutenberg , J , Mayr , B , Reich , B , Wurhofer , D & Niebauer , J 2022 , ' Outpatient Cardiac Rehabilitation Closure and Home-Based Exercise Training During the First COVID-19 Lockdown in Austria : A Mixed-Methods Study ' , Frontiers in Psychology , vol. 13 , 817912 , pp. 817912 . https://doi.org/10.3389/fpsyg.2022.817912Test
مصطلحات موضوعية: PHYSICAL-ACTIVITY, cardiovascular disease, exercise, interview, pandemics, quarantine
الوصف: Objective: To assess the impact of the closure of group-based cardiac rehabilitation (CR) training during the first COVID-19 lockdown in spring 2020 on patients' physical activity, cardiorespiratory fitness, and cardiovascular risk, and to describe the patient experience of lockdown and home-based exercise training during lockdown. Design: Mixed methods study. Prospectively collected post-lockdown measurements were compared to pre-lockdown medical record data. Quantitative measurements were supplemented with qualitative interviews about the patient experience during lockdown. Setting: Outpatient CR centre in Salzburg, Austria. Participants: Twenty-seven patients [six female, mean (SD) age 69 (7.4) years] who attended weekly CR training sessions until the first COVID-19 lockdown in March 2020. Outcome Measures: Quantitative: exercise capacity (maximal ergometer test, submaximal ergometer training), cardiovascular risk (Framingham risk score, blood pressure, body mass index, lipids). Qualitative: individual semi-structured interviews. Results: Exercise capacity had significantly reduced from pre- to post-lockdown: mean (SD) power (W) in maximal ergometry 165 (70) vs. 151 (70), p < 0.001; submaximal ergometer training 99 (40) vs. 97 (40), p = 0.038. There was no significant difference in Framingham risk score and other cardiovascular risk factors. Qualitative data showed that almost all patients had kept physically active during lockdown, but 17 (63%) said they had been unable to maintain their exercise levels, and 15 (56%) felt their cardiorespiratory fitness had deteriorated. Many patients missed the weekly CR training and the motivation and sense of community from training together with others. Several patients stated that without professional supervision they had felt less confident to carry out home-based exercise training at high intensity. Conclusion: This study highlights the importance of group-based supervised exercise training for patients who engage well in such a setting, and the detrimental impact ...
الإتاحة: https://doi.org/10.3389/fpsyg.2022.817912Test
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10دورية أكاديمية
المؤلفون: Dreyer, Stephan1 (AUTHOR), Egger, Andreas1 (AUTHOR), Püschel, Louis2 (AUTHOR), Röglinger, Maximilian2 (AUTHOR) maximilian.roeglinger@fim-rc.de
المصدر: International Journal of Production Research. Feb2022, Vol. 60 Issue 3, p999-1015. 17p. 2 Diagrams, 5 Charts.
مصطلحات موضوعية: *PORTFOLIO management (Investments), *INDUSTRY 4.0, *MULTIPLE criteria decision making, FAULT diagnosis
الشركة/الكيان: TEXAS Instruments Inc. 007321904 TXN
مستخلص: Industry 4.0, which describes the transformation of existing production environments toward smart factories, is implemented in ever more manufacturing companies. Smart factories offer diverse advantages such as high flexibility, dynamic scheduling, as well as accurate fault diagnosis and prediction. Hence, manufacturing companies need support for assessing which projects they should implement to transform their production environment. As no such guidance exists in the literature, we propose a multi-dimensional decision model that accounts for interdependencies among production components, for projects with different performance effects, and for digital capabilities constitutive of smart factories (i.e., real-time ability, interoperability, virtualisation and decentralisation). The decision model schedules smart factory projects over multiple planning periods and assesses project roadmaps in line with objectives that comply with established performance measures and the digital capabilities of smart factories. We evaluate and discuss the decision model in interviews with two factory managers and three researchers with great experience in the smart factory domain. Based on a software prototype, we also successfully applied the decision model at a manufacturing company based on real-world data. [ABSTRACT FROM AUTHOR]
: Copyright of International Journal of Production Research is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
