The Wooster Voice (Wooster, OH), 1950-09-22

This edition includes an article describing the process of seniors nominating potential Homecoming Queen candidates. In preparation for Homecoming, the casting for the first dramatic production of the year has been completed, the results of which were discussed in an article. Interestingly, another article discusses the existence of a miniature UN Assembly, which was in constant session at Wooster during the course of the fall semester. The article specifically described the Twelve Nations represented by new students. The section dedicated to Summary of World News discusses the landing of UN forces on the coast of South Korea. The Atlantic Pact meeting was also discussed in regards to the Big Three Policy towards Germany. The Men’s Self Government Association’s decision to hold off on the ruling on evening apparel at the Kenarden Dining hall was debated in another article towards the latter half of the newspaper. Advertisements from local businesses and the Wooster community have been distributed throughout the course of the newspaper.https://openworks.wooster.edu/voice1941-1950/1218/thumbnail.jp

Pyrolysis of Real Packaging Plastic Waste Streams in a Fluidized-Bed Pilot Plant

Pyrolysis of different packaging plastics waste streams (DKR350) and films/foils (DKR310) was conducted at the pilot scale in a fluidized-bed reactor at 500 °C and 5 kg h-1 with the aim to investigate the impact of sorting, the variability of the feedstock, and process parameters on the yield and quality of feedstocks and product oils. Sorting involved enriching the feedstock in polyolefins content, by mostly removing PET and clogged materials. The results indicated that sorting improved the quality of oil to a limited extent, compared to unsorted streams, as further processing will still be required before due to the presence of heteroatoms (e.g., O, Cl). With the reactor and conditions used, the effect of the variable composition of this type of feedstock (e.g., depending on the location or season) is very limited, as the yield and quality of the condensable product remain similar. Both the effect of temperature and residence time is relevant and comparable, as an increase in either of these parameters favor cracking and aromatization reactions in the gas phase, leading to less condensable product and lower aliphatics/aromatics ratios in their composition.</p

Plastic recycling stripped naked – from circular product to circular industry with recycling cascade

This perspective combines various expertise to develop and analyse the concept of technology cascade for recycling waste plastics with the goal of displacing as much fossil crude oil as possible. It thereby presents archetype recycling technologies with their strengths and weaknesses. It then combines them in various cascades to process a representative plastic mix, and determines how much (fossil) naphtha could be displaced and at which energy consumption. The cascades rely on a limited number of parameters that are fully reported in supplementary information and that were used in a simple and transparent spreadsheet model. The calculated results bust several common myths in plastic recycling, e. g. by prioritizing here recycled volume over recycling efficiency, and prioritizing circular industry over circular products. It unravels the energy cost of solvent-based recycling processes, shows the key role of gasification and the possibility to displace up to 70 % of the fossil feedstock with recycled carbon, a recycling rate that compares well with that aluminium, steel or paper. It suggests that deeper naphtha displacement would require exorbitant amount of energy. It therefore argues for the need to complement recycling with the use of renewable carbon, e. g. based on biomass, to fully defossilise the plastic industry.</p

Upscaling calcite dissolution rates in a tight reservoir sandstone

Calcite is a highly abundant mineral in the Earth’s crust and occurs as a cement phase in numerous siliciclastic sediments, where it often represents the most reactive component when a fluid percolates through the rock. Hence, the objective of this study is to derive calcite dissolution rates on different scales in a reservoir sandstone using mineral surface experiments combined with vertical scanning interferometry (VSI) and two types of core plug experiments. The 3D geometry of the calcite cement phase inside the rock cores was characterized by X-ray micro-computed tomography (µXCT) and was used to attempt dissolution rate upscaling from the mineral surface to the core scale. Initially (without upscaling), our comparison of the far-from-equilibrium dissolution rates at the mineral surface (µm-mm-scale, low fluid residence time) and the surface normalized dissolution rates obtained from the core experiments (cm-scale, high fluid residence time) revealed differences of 0.5–2 orders of magnitude. The µXCT geometric surface area connected to the open pore space (GSA$_{Cc,open}$) considers the fluid accessibility of the heterogeneously distributed calcite cement that can largely vary between individual samples, but greatly affects the effective dissolution rates. Using this parameter to upscale the rates from the µm- to the cm-scale, the deviation of the upscaled total dissolution rates from the measured total dissolution rates was less than one order of magnitude for all investigated rock cores. Thus, GSA$_{Cc,open}$ showed to be reasonably suitable for upscaling the mineral surface rates to the core scale

Comparing Performance of Biomass Gasifier Stoves:Influence of a Multi-Context Approach

Millions of people worldwide die prematurely or suffer from severe health ailments due to cooking equipment that causes unhealthy doses of (household) air pollution. Many attempts to address this have fallen short because technology was not improved sufficiently or the way it was introduced constituted an ill fit with the broader "cooking eco-system". In terms of technology, (biomass) gasifier stoves look promising on all three sustainability dimensions (people, planet, profit) but have not been adopted on a substantial scale across cultures and regions either. We therefore used a design approach that takes multiple contexts (target groups) into account and compared the performance of a gasifier stove that was developed following this multi-context approach with four previous gasifier versions. With the comparative assessment using criteria well beyond mere technological performance we found that it performed better than these versions as well as than what could be expected based on historical learning, while providing additional systemic advantages. These results encourage verification of the value of the multi-context approach in more settings while providing clues for refinement of the assessment method

Interkulturelle Kompetenz

Das Working Paper Nr. 2 informiert über die Ergebnisse eines Workshops zum Thema „Interkulturelle Kompetenz“, in dem Vertreter der Technischen Universität Dresden, Fakultät für Erziehungswissenschaften, Institut für Berufspädagogik, Professur für Didaktik des beruflichen Lernens (Dr. Steffen Kersten, Dipl.-Berufspäd. Marcel Köhler, Lars Leidl M.A., M.Sc.) und der Daetz-Stiftung (Katrin Hallmann M.A.) im Auftrag der Staatlichen Studienakademie Breitenbrunn (Dr. Maik Arnold, Sylvia Koch M.A.) eine Arbeitsdefinition und Lernziele für die Zusatzqualifikation diskutiert haben. Das Working Paper ist Bestandteil des Projektes „Zusatzqualifikation zur Förderung der interkulturellen Kompetenz von Studierenden der Berufsakademie Sachsen“, welches aus Mitteln des Europäischen Sozialfonds (ESF) und des Freistaates Sachsen gefördert wird.:1 Projekthintergrund und Zielstellung 2 Arbeitsdefinition zum Begriff Interkulturelle Kompetenz 2.1 Begriffliche Charakteristika, Prämissen und Problemstellungen 2.2 Ergebnisse der Diskussion einer Arbeitsdefinition interkultureller Kompetenz für die zu konzipierende Zusatzqualifikation 3 Definition von Lernzielen für die Zusatzqualifikation Interkulturelle Kompetenz 3.1 Grobziel: Förderung interkultureller Kompetenz von Studierenden 3.2 Learning Outcomes nach European Qualifications Framewor

An in-flight plasma diagnostic package for spacecraft with electric propulsion

The plasma diagnostics presented in this article target the plasma surrounding a spacecraft that is created by the electric thruster and its surface modifying effects. The diagnostic package includes a retarding potential analyzer, a plane Langmuir probe, and an erosion sensor. The paper describes the instrument as well as suitable test environments for mimicking the effects expected in space and shows test results. The system is to fly for the first time on the Heinrich Hertz satellite, which is scheduled to be launched in 2023. The spacecraft will be equipped with a pair of Highly Efficient Multistage Plasma Thrusters (HEMPT) and a pair of Hall thrusters for redundancy