1,268 research outputs found
Spectroscopic investigations of the H3PO4 and H2O uptake of polybenzimidazole membranes for fuel cells
No full textPolybenzimidazole (PBI) doped with H3PO4 is the most commonly used membrane material for high-temperature polymer fuel cells. Proton conductivity is strongly dependent on acid doping and water content (humidity). Despite these facts, only little is known on the chemical equilibria of all species inside the membrane as a function of the composition of the ternary system PBI - H3PO4 - H2O. This includes details on the proton transfer processes, on the dominant conduction mechanisms and on the condensation equilibria, leading to the formation of diphosphoric acid and higher homologues species.
In this study, Raman and NMR spectroscopy is used to investigate the chemical inter¬actions between H3PO4, H2O and PBI vs. the H3PO4 doping level. We obtained information on the H-bond formation between H3PO4 and the polymer chains, on tautomeric processes as well as on the presence of not directly bound H3PO4 at high doping levels. Investigations were performed with uncrosslinked and crosslinked m-PBI and AB-PBI [1-4]. [1] F. Conti, A. Majerus, V. Di Noto, C. Korte, W. Lehnert, D Stolten, Phys. Chem. Chem. Phys. 14, 10022-10026 (2012) [2] F. Conti, S. Willbold, S. Mammi, C. Korte, W. Lehnert, D. Stolten, New J. Chem. 37, 152-156 (2013). [3] A. Majerus, F. Conti, C. Korte, W. Lehnert, D. Stolten, ECS Transaction, in press. [4] G. A. Giffin, F. Conti, S. Lavina, A. Majerus, G. Pace, C. Korte, W. Lehnert, V. Di Noto, Int. J. Hydrogen Energy, submitted
Spectroscopic Investigation of the Acid and Water Uptake of Polybenzimidazole Membranes for Fuel Cells
No full textPolybenzimidazole (PBI) doped with H3PO4 is the most commonly used membrane material for high-temperature polymer fuel cells. Proton conductivity is strongly dependent on acid doping and water content. Despite these facts, only little is known on the chemical equilibria of all species inside the membrane as a function of the composition of the ternary system PBI - H3PO4 - H2O. This includes details on the proton transfer processes, on the dominant conduction mechanisms and on the condensation equilibria, leading to the formation of diphosphoric acid and higher homologues species.
In this study, Raman and NMR spectroscopy is used to investigate the chemical interactions between H3PO4, H2O and PBI vs. the H3PO4 doping level. We have obtained information on the H-bond formation between H3PO4 and the polymer chains, on tautomeric processes as well as on the presence of not directly bound H3PO4 at high doping levels. Investigations were performed with uncrosslinked and crosslinked m-PBI and AB-PBI [1-4]. [1] F. Conti, A. Majerus, V. Di Noto, C. Korte, W. Lehnert, D Stolten, Raman study of the polybenzimidazole–phosphoric acid interactions in membranes for fuel cells, Phys. Chem. Chem. Phys. 14 (2012) 10022. [2] F. Conti, S. Willbold, S. Mammi, C. Korte, W. Lehnert, D. Stolten, Carbon NMR investigation of the polybenzimidazole–dimethylacetamide interactions in membranes for fuel cells, New J. Chem. 37 (2013) 152. [3] A. Majerus, F. Conti, C. Korte, W. Lehnert, D. Stolten, Thermogravimetric and Spectroscopic Investigation of the Interaction between Polybenzimidazole and Phosphoric Acid, ECS Transaction (2013) accepted. [4] G. A. Giffin, F. Conti, S. Lavina, A. Majerus, G. Pace, C. Korte, W. Lehnert, V. Di Noto, A vibrational spectroscopic and modeling study of poly(2,5-benzimidazole) - phosphoric acid interactions, Int. J. Hydrogen Energy (2013) accepted
The Gothic threshold of Sabine Baring-Gould : a study of the Gothic fiction of a Victorian squarson
No full textThis thesis is a study of the Gothic fiction of Sabine Baring-Gould (1834-
1924), with particular attention given to Baring-Gould’s roles as squire and parson. I
have chosen to analyze two of Baring-Gould’s Gothic works, the novel Mehalah
(1880) and the novella Margery of Quether (1884), both which allow a particularly
profitable examination of the influence of Baring-Gould’s roles on his fiction.
In studying these texts I apply my theory of Gothic fiction as a particularly
modern genre built upon a "Gothic threshold," a meeting point of extreme opposites
which ambivalently contrasts and merges the categories of the modern and the
medieval.
In the first chapter I describe how Baring-Gould’s unique Hegelian-influenced
Tractarian philosophy influenced his creation of the dialectical setting of Mehalah. I
argue that because of this influence Mehalah should be recognized as a significant
contribution to the literature of the Oxford Movement.
In the second chapter I argue that Mehalah’s historical setting in the time of
the French Revolution and the influence of Wuthering Heights reinforce Mehalah’s
use of the “Gothic threshold” structure and contribute to its theme of ambivalent
progress.
In the third chapter I discuss the influence of Baring-Gould’s sermon-writing
on Mehalah and consider connections between Baring-Gould’s role as parson and the
novel’s botched marriage theme.
In the final chapter I discuss Margery of Quether as an innovation in the
Gothic and vampire tradition as perhaps the only Gothic work that directly dramatizes
the Land Law debate and presents that debate as a "Gothic" contest. I argue that
Margery channels Baring-Gould’s tensions as a landowner.
In the conclusion I argue that Mehalah and Margery display Baring-Gould’s
technique of constructing miniature Gothic battles that relate to larger confrontations,
and that the ultimate terror presented in these works is the conclusion of the battle
between ancient and modern forces
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De Lingua Sabina: A Reappraisal of the Sabine Glosses
No full textThis thesis offers a reappraisal of the Sabine glosses through the analysis of thirty-nine words, all glossed explicitly as Sabine in ancient sources ranging from the first century BCE to the sixth century CE.
The study of the Sabine glosses found in ancient grammarians and antiquarians goes back to the beginnings of Italic scholarship. Over time, two positions on the Sabine glosses have crystallised: (a) the Sabine glosses are evidence of a personal obsession of the Republican author Varro, in whose work many Sabine glosses survive, and (b) the Sabine glosses are true remnants of a single language of which little or no epigraphic evidence has survived.
By using the neogrammarian observation that sound-change is regular and exceptionless, it is possible to ascertain whether or not the Sabine glosses are likely to be from the same language. This thesis finds that the sound-changes undergone by the Sabine glosses show no broad agreement. The developments are characteristic of different languages – Latin, Faliscan and various Sabellic languages – and many changes are mutually exclusive. This consequently throws doubt on the assertion that the Sabine glosses are all taken from one language. Instead, the glosses should be seen as part of a discourse of the relationships between Romans, Sabines and Sabellic-speaking peoples.
During the Republic, Sabines were central to Roman myth, historiography and political rhetoric. As the Sabines were a distinct people in the Roman foundation myths, but were largely Romanised in the Republican present, they became a convenient bridge between Rome and the Sabellic-speaking peoples of Central and Southern Italy, to whom Greek and Roman writers ascribed myths tracing origin back to the Sabines. This continued into the Empire, when emperors such as Claudius and Vespasian utilised their (supposed) Sabine heritage to gain ideological capital. In light of this, the phenomenon of Sabine glosses cannot be seen as one man’s interest, but as a means of reflecting on Rome’s relations with Sabellic-speaking Italy
KOMPARASI SEJARAH DAN ANALISIS TEKS SABINE SCHMIDTKE
No full textThis study looks at the numerous studies of Islamic theology conducted by Western nations since the early nineteenth century. They studied Muslim thinkers' writings and brought them to the West. Initially, the study of the manuscript was general in nature, but later thinkers narrowed it down to a specific study. Sabine Schmidtke is a modern Orientalist who specializes in manuscripts of Islamic theology, particularly Mu'tazilah theology. In this study, the author employs the library research method to examine Sabine Schmidtke's books and journals on the relationship between Jewish Karaites, Shia theology and Mu'tazilah theology. Based on the author's research, Sabine's comparative historical and textual studies have revealed that the Shia school of thought and the Jewish Karaites sect have adopted Mu'tazilah thought, specifically the thought of Abu al-Husayn al-Basri. They not only adopted ideas, but they also copied and preserved writings found in Yemen in the form of manuscripts.
Keywords: Sabine Schmidtke, Jewish Karaites, Mu'tazilah
An in-silico look at alternative battery materials : using combined quantum chemical and molecular dynamics approaches to determine physicochemical properties of novel battery materials
No full textauthor: Sabine U. Lerch, BScMasterarbeit University of Innsbruck 202
An in-silico look at alternative battery materials : using combined quantum chemical and molecular dynamics approaches to determine physicochemical properties of novel battery materials
No full textauthor: Sabine U. Lerch, BScMasterarbeit University of Innsbruck 202
An in-silico look at alternative battery materials : using combined quantum chemical and molecular dynamics approaches to determine physicochemical properties of novel battery materials
No full textauthor: Sabine U. Lerch, BScMasterarbeit University of Innsbruck 202
Integration and analysis of the effects of an unnatural amino acid into transmembrane 4 of the Orai1 protein
No full textAuthor Bc. Helene Sabine Gemeinhardt BSc.Masterarbeit Universität Linz 2023Arbeit nach Ablauf der Sperre auf den öffentlichen PCs in den Bibliotheken der JKU+Medizin abrufba
In Memorium: Sabine Jessner Schlinger (1924-2019)
No full textSabine Luise Marianne Jessner Sehlinger died in Indianapolis on November 3, 2019. She was a professor of French history; the first woman president of the Indiana Academy of the Social Sciences; president of the Swiss-American Historical Society; several times president of the Indianapolis Wellesley Club; and the author of articles in historical journals and a biography of Edouard Herriot, French prime minister in the 1920s
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