166 research outputs found
The Spectre of Shakespeare in Tom Stoppard’s 'Rosencrantz and Guildenstern are Dead'
The modern literary landscape has been, and continues to be, dominated by the figure of Shakespeare. Such is his literary status that Shakespeare has been metamorphosed into a mythical being whose persona represents the pinnacle of cultural achievement. One consequence is that Shakespeare can tend to subsume the cultural space within which later writers may work. Finding a locus within ‘Shakespeare’ the cultural site can be a means of overcoming this cultural inertia surrounding the figure, and of facilitating participation in the cultural domain. By appropriating Shakespearean scenes, and reproducing them within a contemporary dramatic work, modern writers are tapping into Shakespeare’s cultural momentum, and appropriating significance from it. This article will suggest that Tom Stoppard’s Rosencrantz and Guildenstern are Dead employs just such a tactic, and further, that the play may be interpreted as a dramatisation of the relationship of the late twentieth century individual to Shakespeare
Geschiebehaushaltsstudie zur Sanierung der Wasserkraft
Aufsatz veröffentlicht in: "Wasserbau-Symposium 2021: Wasserbau in Zeiten von Energiewende, Gewässerschutz und Klimawandel, Zurich, Switzerland, September 15-17, 2021, Band 1" veröffentlicht unter: https://doi.org/10.3929/ethz-b-00049975
2D Simulation von Hochwasserszenarien an der Sihl in der Stadt Zürich
Aufsatz veröffentlicht in: "Wasserbau-Symposium 2021: Wasserbau in Zeiten von Energiewende, Gewässerschutz und Klimawandel, Zurich, Switzerland, September 15-17, 2021, Band 2" veröffentlicht unter: https://doi.org/10.3929/ethz-b-00049975
Photoplastic effects in chalcogenide glasses: A review
A synopsis of the various photoinduced changes of rheological, mechanical and
elastic properties is presented in the first part of the article. After a
critical appraisal of a large body of experimental data it suggested that the
photoviscous effect, that is, the athermal decrease of viscosity of a
non-crystalline chalcogenide upon illumination is the key for a plethora of
photoinduced effects reported so far in the literature under different names.
Morphic effects (shape or surface morphology) may ap-pear either in the
presence or absence of external mechanical stimuli leading to the fabrication
of a variety of technologically important photoprocessed structures. A few
representative examples of photoplastic effects are described, in the second
part of the paper, in some detail based on information provided by in situ
Raman scattering and nanoindentation experiments.Comment: 12 pages, 10 figure
Online coupling of pure O2 thermo-optical methods – 14C AMS for source apportionment of carbonaceous aerosols
This paper reports on novel separation methods developed for the direct determination of 14C in organic carbon (OC) and elemental carbon (EC), two sub-fractions of total carbon (TC) of atmospheric air particulate matter. Until recently, separation of OC and EC has been performed off-line by manual and time-consuming techniques that relied on the collection of massive CO2 fractions. We present here two on-line hyphenated techniques between a Sunset OC/EC analyzer and a MICADAS (MIni radioCArbon DAting System) accelerator mass spectrometer (AMS) equipped with a gas ion source. The first implementation facilitates the direct measurement in the low sample size range (<10 lg C) with high throughput on a routine basis, while the second explores the potential for a continuous-flow real-time CO2 gas feed into the ion source. The performance achieved with reference materials and real atmospheric samples will be discussed to draw conclusions on the improvement offered in the field of 14C aerosol source apportionment
Evaluation and Inter-Comparison of Oxygen-Based OC-EC Separation Methods for Radiocarbon Analysis of Ambient Aerosol Particle Samples
Radiocarbon analysis is a widely-used tool for source apportionment of aerosol particles. One of the big challenges of this method, addressed in this work, is to isolate elemental carbon (EC) for 14C analysis. In the first part of the study, we validate a two-step method (2stepCIO) to separate total carbon (TC) into organic carbon (OC) and EC against the EUSAAR_2 thermal-optical method regarding the recovered carbon concentrations. The 2stepCIO method is based on the combustion of OC in pure oxygen at two different temperature steps to isolate EC. It is normally used with a custom-built aerosol combustion system (ACS), but in this project, it was also implemented as a thermal protocol on a Sunset OC-EC analyzer. Results for the recovered EC mass concentration showed poor agreement between the 2stepCIO method on the ACS system and on the Sunset analyzer. This indicates that the EC recovery is sensitive not only to the temperature steps, but also to instrument-specific parameters, such as heating rates. We also found that the EUSAAR_2 protocol itself can underestimate the EC concentration on untreated samples compared to water-extracted samples. This is especially so for highly loaded filters, which are typical for 14C analysis. For untreated samples, the EC concentration on long-term filter samples (two to five days sampling time) was 20–45% lower than the sum of EC found on the corresponding 24-h filter samples. For water-extracted filter samples, there was no significant difference between long-term and the sum of daily filter samples. In the second part of this study, the 14C was measured on EC isolated by the 2stepCIO method and compared to methods from two other laboratories. The different methods agree well within their uncertainty estimates
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