798 research outputs found
Dagmar Weidinger
No full textDagmar Weidinger. © Markus Ladstaetter Dagmar Weidinger is a trained art historian. She has studied at the Universities of Vienna, London (UK) and Tours (F). After her PhD she has worked as a curator, lecturer and journalist, writing for various national and international newspapers and magazines. She joined ICARUS in 2014 taking over the press and public relations activities as well as working on the "insights"-magazine together with Kerstin Muff
G. Weidinger's Waarenlexikon der chemischen Industrie und der Pharmacie : mit Berücksichtigung der wichtigsten Nahrungs- und Genußmittel
No full textG. Weidinger. Hrsg. von T. F. Hanause
Competences and ability self-concepts of 10th Grade students
No full textData for: Paschke, P., Weidinger, A. F., & Steinmayr, R. (2020). Separating the effects of self-evaluation bias and self-view on grades. Learning and Individual Differences, 83. https://doi.org/10.1016/j.lindif.2020.101940unknow
Design-Driven Research by its Ways of Knowledge Production. On Preliminary Findings and Future Trajectories for CA2RE
No full textOptical characterisation and post-fabrication mode tuning of circular Bragg resonators with embedded GaAs Quantum Dots
No full textIn recent decades, quantum information technology emerged as a topic of great interest. With it comes the need for bright sources of indistinguishable single- and entangled photons on-demand. A promising candidate for such a photon source are GaAs quantum dots. The need of higher photon count rate can be addressed with photonic structures such as Circular Bragg Resonators (CBRs), which have the ability to improve the brightness of a source. Not only do they increase the extraction efficiency, but they also provide an enhanced emission rate via Purcell enhancement. In this thesis, a post-fabrication method for red-tuning of Circular Bragg Resonator (CBR ) cavity modes via wet-chemical etching with removal of surface oxide is demonstrated. Under two photon excitation (TPE) the biexciton-exciton cascade is excited and the Purcell enhancement/lifetime of the respective emission is observed for different detuning of the cavity mode positions relative to the emission. Beginning with blue-detuned modes and no significant Purcell enhancement, a Purcell enhancement by a factor of up to 4.3 is demonstrated for the biexciton and exciton emission over five repeated wet-chemical etch-cycles. Furthermore, the single-photon purity and the linewidth were monitored with a Hanbury Brown and Twiss setup and a Michelson interferometer, respectively. These measurements demonstrate that the Purcell enhancement can be recovered without deterioration of other relevant emission properties. Many of the results from this thesis have also been published in [1].Author Christian Weidinger, BScMasterarbeit Johannes Kepler Universität Linz 202
The ESC ACCA EAPCI EORP acute coronary syndrome ST-elevation myocardial infarction registry. ACS STEMI Investigators
No full textAims: The Acute Cardiac Care Association (ACCA)-European Association of Percutaneous Coronary Intervention (EAPCI) Registry on ST-elevation myocardial infarction (STEMI) of the EurObservational programme (EORP) of the European Society of Cardiology (ESC) registry aimed to determine the current state of the use of reperfusion therapy in ESC member and ESC affiliated countries and the adherence to ESC STEMI guidelines in patients with STEMI.
Methods and results: Between 1 January 2015 and 31 March 2018, a total of 11 462 patients admitted with an initial diagnosis of STEMI according to the 2012 ESC STEMI guidelines were enrolled. Individual patient data were collected across 196 centres and 29 countries. Among the centres, there were 136 percutaneous coronary intervention centres and 91 with cardiac surgery on-site. The majority of centres (129/196) were part of a STEMI network. The main objective of this study was to describe the demographic, clinical, and angiographic characteristics of patients with STEMI. Other objectives include to assess management patterns and in particular the current use of reperfusion therapies and to evaluate how recommendations of most recent STEMI European guidelines regarding reperfusion therapies and adjunctive pharmacological and non-pharmacological treatments are adopted in clinical practice and how their application can impact on patients' outcomes. Patients will be followed for 1 year after admission.
Conclusion: The ESC ACCA-EAPCI EORP ACS STEMI registry is an international registry of care and outcomes of patients hospitalized with STEMI. It will provide insights into the contemporary patient profile, management patterns, and 1-year outcome of patients with STEMI
IMPURITY TRAPPING EFFECTS IN THE LOCALIZATION OF MUONS IN SOLIDS
No full textMuon spin rotation ( mu SR) experiments are now regularly used to study solids and solid-state processes. The interpretation of mu SR data is usually based on a 'standard' picture in which the muons localise randomly in the solid, and then diffuse, possibly encountering impurities. There remain some important cases where no satisfactory interpretation results. For some of these anomalous systems the authors propose an alternative picture in which the two different factors are the importance of metastable (free muon) excited states, and the role of impurities in causing localisation. They show this allows a possible explanation of results for Al:Mn and demonstrate that elastic strain fields of defects may be a major factor in influencing localisation. They also propose a new mechanism for delayed self-trapping
Testicular mast cells and male infertility.
No full textDie Fibrose der Wand der Samenkanälchen ist eine seit langem bekannte typische Veränderung bei Männern mit Spermatogenesedefekten, deren Ursache und deren direkte Konsequenz aber nicht bekannt sind. Da im Hoden von Männern mit Spermatogenesestörungen deutlich vermehrt Mastzellen vorkommen, von denen viele aktiviert und degranuliert sind, ist zu erwarten, daß Produkte der Mastzellen freigesetzt werden. Wir stellen die Hypothese auf, daß sie an der Entstehung der Tubulusfibrose und der Spermatogenesestörung beteiligt sind. Untersuchungen in menschlichen Zellkulturen zeigten, daß Tryptase, das Hauptprodukt der Mastzellen, die Bildung von COX-2 und von Prostaglandinen stimuliert. Bestimmte Prostaglandine (J2/15dJ2) stimulieren dann über ihren Rezeptor (PPARgamma) das Fibroblastenwachstum, eine Voraussetzung für die Fibrose. Diese Ergebnisse sind für krankhafte Bindegewebsumbauvorgänge und speziell für die Tubulusfibrose bei Spermatogenesedefekten von Bedeutung: Bei Spermatogenesedefekten fanden wir, daß Mastzellvermehrung und Aktivierung mit der Expression von COX-2 in interstitiellen Zellen einhergehen. Bei Hoden mit normaler Spermatogenese (und nur wenigen Mastzellen) war COX-2 dagegen nicht nachweisbar. Rezeptoren für Tryptase sind auf interstitiellen Zellen und relevante Prostaglandinrezeptoren auf peritubulären Zellen nachweisbar. Es ist demnach möglich, daß Mastzelltryptase COX-2- und Prostaglandinbildung im infertilen Hoden anregt und dies letztlich zur Fibrose in der Tubuluswand führt, eine Veränderung, die sicherlich zur Spermatogenesestörung beiträgt. Die Aufklärung des Signalweges der Tryptase erlaubt es erstmals auch, gezielt über eine Beeinflussung des Fibroseprozesses nachzudenken: Mastzellstabilisatoren, Antagonisten von Tryptase, von COX-2 oder PPARgamma bieten sich an.Fibrotic thickening of the wall of the seminiferous tubules is a hallmark of male infertility, but neither causes nor the direct consequences of tubular fibrosis are known. Since male infertility is also associated with increased numbers of activated mast cells, we propose that secreted mast cell products may be involved in the pathogenesis of tubular fibrosis and possibly male infertility. Evidence for this hypothesis is derived from cell culture and ex-vivo experiments: We found that actions of the major mast cell product, tryptase, includes formation of COX2 and synthesis of prostaglandins in target cells. Prostaglandin J2/15dJ2, which act via their receptor (PPARgamma), are responsible for fibroblast proliferation, a prerequisite of fibrosis. This may be of relevance for fibrosis in general and for testicular tubular fibrosis in particular: We found COX2 in testes of infertile men, but not of men with normal spermatogenesis, implying formation and action of prostaglandins. Since peritubular cells bear PPARgamma and since activated mast cells are at least tripled in infertile men, we propose a chain of events initiated by mast cell tryptase eventually leading to tubular fibrosis. Since tubular fibrosis is likely to be involved in the process leading to the damage of spermatogenesis, these results may pinpoint new targets for possible therapeutic interventions: mast cells, tryptase, COX2 and prostaglandins, as well as PPARgamma.Fil: Mayerhofer, Artur. Universitat Technical Zu Munich; AlemaniaFil: Meineke, V.. Sanitätsakademie der Bundeswehr; AlemaniaFil: Weidinger, S.. Universitat Technical Zu Munich; AlemaniaFil: Köhn, F. M.. Universitat Technical Zu Munich; AlemaniaFil: Frungieri, Monica Beatriz. Universidad de Buenos Aires. Facultad de Medicina; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental. Fundación de Instituto de Biología y Medicina Experimental. Instituto de Biología y Medicina Experimental; Argentin
Study results on the effects of interactive elements on learning performance (DiKuLe - M1)
No full text<p>This repository contains the results of an experimental study investigating the effects of three different interactive element types embedded in videos on learning performance that was used for evaluation in the following paper:</p>
<p>Raab, M., Weidinger, J., Hirschlein, N., Meckenstock, J.-N., Thron, L., and Ulbricht, E. F. (2023). Understanding the Effectiveness of Interactive Elements in Video-Based Learning: An Experimental Study, in Proceedings of the 18th International Conference on Wirtschaftsinformatik, Paderborn, Germany.</p>
<p>This study has been funded by the “Innovation in der Hochschullehre” foundation as part of the “Digitale Kulturen der Lehre entwickeln (DiKuLe)” project (<span>FMM2020-140).</span></p>
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