Influence of Process Parameters on Chlorinated Biocide Decontamination by li-CO2 on Artificially Contaminated Model Materials

ABSTRACT

Previously, heavy use of biocides for the treatment of objects made of organic materials in museum collections (e.g. ethnographic, historical collections) was very common. Now suitable decontamination methods/technologies are being sought. A decontamination treatment by li-CO₂ was optimized that considered the specific requirements of museum objects. The treatment was tested on model materials artificially contaminated with biocide solutions containing dichlorodiphenyltrichloroethane (DDT), pentachlorophenol (PCP), lindane, and permethrin or cypermethrin. High decontamination was achieved for DDT, lindane, PCP, and permethrin on artificially biocide loaded wool and wood model materials. Optimal process parameter settings for li-CO₂ decontamination include a single 30?min cycle for woolen materials and three sequential 30?min cycles each for wood. These methods allow a reduction of at least 90% of all biocides for wool and between 70% and 85% for wood. Decontamination of the latter was more effective for less polar biocides as DDT and permethrin. Despite a significant improvement in decontamination for wood using co-solvents such as acetone, ethanol, and methyl tertiary-butyl ether (MTBE), their use is not recommended due to the increased risk of damage to the objects, in particular if a surface coating is present.     

Great Expectations? Childhood,Family, and Middle-Class Social Mobility in Nineteenth-Century England

ABSTRACT

Existing histories of social mobility have focused on adults and on measuring the achievement of individual upward mobility. However, children and families were central to mobility strategies. Using the papers of the Heywoods of Bolton, this article examines how the families of the industrial middle class endowed their offspring with the goods and character needed to secure their social standing, highlighting the emotional intricacy of these processes. It demonstrates that such families conceived of social mobility as a familial project and that rather than pursuing upward mobility, their chief objective was to guard against social decline.     

The Greek Publishing Industry and Professional Development

In the Greek publishing industry, tradition and the desire for innovation go hand in hand. The industry is influenced by European developments in publishing and bookselling in terms of book promotion methods, the role of chain bookstores and the impact of information technology. Greece shares the features of other small book markets in Europe, whilst retaining the individuality defined by the Greek language and the country’s cultural and social conditions. This article provides an overview of the publishing industry in Greece through a review of the relevant literature and the available statistics. This work also focuses on the need to develop publishing skills through publishing education and continuous professional development.     

Cross-Sectoral Mobility Funding and the Challenge of Immersion: The Case of SSH

Minerva - Project funding rarely demands much change on behalf of the recipient. In contrast, cross-sectoral mobility funding requires recipients to change their environment and often some aspects...     

Sales Forecasting of New Entertainment Media Products

Managers predict the sales of new entertainment products prior to their release using comparables, such as similar books from the same author or movies with the same actors. In this study, the authors analyze whether diffusion models for media products provide helpful support in the management task of predicting prelaunch sales of the first distribution channel for three different product categories. They compare the performance of predictions based on (a) simple success factor regressions (OLS) and (b) diffusion models against real management predictions. Based on samples covering the German music, film, and the literary market, we show that model-based forecasts outperform the forecasts of management teams for the majority of the products. In contrast, management is superior in forecasting top sellers. This is due to unobserved factors arising from more management attention attached towards super stars. The authors do not find substantial prediction differences between simple success factor regressions and more complex diffusion models. Thus, managers interested in total sales estimates can easily rely on OLS based success factor predictions. Advertising and product differentiation factors with respect to quality (e.g., star power, critics, or country of origin) are across all 3 industries highly relevant for sales predictions, whereas others variables (e.g., price, distribution power, season, or competition) differ across industries.     

Adventures in Licensing! How Librarians are Embracing and Affecting Change in Electronic Resources Licensing

ABSTRACT

This article describes a program session about licensing electronic resources. The speakers discussed a range of licenses in the current electronic resources landscape and described current trends in the negotiation and management of licenses. They also explored the impact of workflow design on the accessibility of electronic resources at any institution.     

Precision Education Initiative: Moving Toward Personalized Education

This article propose the Precision Education Initiative, which is the tailoring of education to the specific characteristics of the individual student. Mirroring precision medicine, the author lays out both near‐term and longer term goals that educational research, and importantly educational practice, should follow.     

The effect of worked examples on student learning and error anticipation in algebra

Instructional Science - The present study examines the effectiveness of incorporating worked examples with prompts for self-explanation into a middle school math textbook. Algebra 1 students...     

Are Greek school students flourishing?

ABSTRACT

Schools have a key role in promoting student social and emotional development and are encouraged to serve as a primary source of support, especially for those learners in need of special attention for addressing their needs. Young people’s subjective emotional-social well-being is a general indicator of their mental health status. In this article, we present an assessment of the emotional, psychological and social well-being of Greek adolescent students, determine whether they are flourishing or languishing and investigate whether well-being varies by gender, age and year level. Analysis of data from over 500 Greek adolescent students (year levels 6–10) who completed the Mental Health Continuum (MHC) scale indicated that over half of the participants were flourishing, while only a small proportion were languishing and the remainder had moderate mental health. Gender differences were identified with female students reporting more challenges to their well-being than their male peers. Additionally, younger students were more likely to be flourishing than older students.