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Investigation of 1~10 mol% SnO2-doped Bi2O3 as Solid Electrolyte
No full text本研究添加少量(<10 mol%)二氧化錫至氧化鉍中，以膠粒製程與固態反應法合成並進行性質分析。研究目的包括了解添加二氧化錫對於氧化鉍的導電性質、抗還原性質的影響，並釐清既有氧化鉍－二氧化錫相圖彼此間的相異之處。X光繞射儀與熱差分析儀被用於研究添加二氧化錫之氧化鉍(BSO)樣品的相變行為，此外進行了密度量測、掃描式電子顯微鏡觀察、兩點電極電性量測以及重量損失實驗，以測試BSO樣品的性質。由分析結果重新繪製了新的氧化鉍－二氧化錫相圖。BSO樣品基本上為α相氧化鉍與錫酸鉍(Bi2Sn2O7)的雙相混合樣品，唯有添加1 mol%二氧化錫(1BSO)的樣品在燒結後形成介穩定的α-氧化鉍單一相。而1BSO也是導電性表現最好的BSO樣品，其於600oC的導電性為7.74×10-5 S/cm，而在650oC的導電性為1.78×10-4 S/cm。此外，在650oC、氧分壓為10-16 atm的還原氣氛下，1BSO樣品在80分鐘內仍保持氧化態不被還原。Various Bi2O3 materials (BSO) doped with SnO2 up to 10 mol% have been synthesized by colloidal process and solid state reactions. The objectives are to study the effect of SnO2 dopant on the electrical conductivity and the stability of the BSO materials in reducing atmosphere. The discrepancies existing between the reported Bi2O3-SnO2 phase diagrams are also investigated. X-ray diffraction (XRD) and differential thermal analyzer (DTA) are used to investigate the phase transition behaviors of the BSO samples. Archimedes’ method, XRD, scanning electron microscope (SEM) observation, 2-probe conductivity measurement and mass loss test are used to study the properties of the samples. A revised Bi2O3-SnO2 phase diagram of 0~10 mol% SnO2 region is proposed. Most of sintered BSO samples consist of α-Bi2O3 and Bi2Sn2O7 phases. While the sintered 1 mol% SnO2-doped Bi2O3 (1BSO) is dense and shows single phase α-Bi2O3. The highest electrical conductivity at the range of 450~700oC were obtained by 1BSO sample, which was 7.74×10-5 S/cm at 600oC and 1.78×10-4 S/cm at 650oC. The most noteworthy advantage of SnO2-dopant is that it stabilizes the Bi2O3 matrix in reducing atmosphere in which the oxygen partial pressure is 10-16 atm (controlled by CO/CO2) at 650oC
Anton Diabelli (1781-1858) Notturno op. 123 für 2 Csakane und Gitarre
No full textAufnahme im Rahmen des abo@mumuth Konzerts "Mythos und Vergessen" am 4.6.202
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Hilfestellungen zur Interpretation der französischen barocken Courante für Blockflöte auf Grundlage des Tanzes
No full textWährend ich in der Vergangenheit als Blockflötistin französische Tanzmusik übte, hatte ich oft das Gefühl, dass es nicht einfach ist, die Seele der französischen Tanzmusik klar auszudrücken. Da ich diese Tanzschritte jedoch nicht als Tanz gelernt habe, war ich nicht in der Lage, wenn ich mir nur Videos von Barocktänzern ansah, wirklich verstehen, wie ich dieses Rhythmusgefühl beherrschen kann. Ich habe die Courante als Beispiel herangezogen, um durch die intensivere Beschäftigung mit diesem Tanz die Beziehung zwischen der Musik und dem Tanz zu beleuchten und als Musikerin durch diese Gedanken frische Ideen in zukünftige Aufführungen einzubringen
Pharmacological Basis of Drug-Induced Nephrotoxicity
No full textDrug-induced nephrotoxicity is a significant concern in clinical practice, as certain medications can cause kidney damage and impair renal function. Understanding the mechanisms, clinical manifestations, diagnosis, management, and prevention strategies of drug-induced nephrotoxicity is crucial for promoting patient safety and reducing the incidence of kidney injury.LBáltalános orvosangolegységes, osztatla
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