Numerical Integration of Weight Loss Curves for Kinetic Analysis

Research abounds in the literature on kinetic analyses using thermogravimetric (TG) runs. Many of these studies use approximations of integral or derivative forms of the kinetic law and all of them use programmed temperatures. In the present work, a numerical integration procedure was discussed and applied to different examples. We focused on materials presenting a single decomposition curve as well as other materials with more complex processes. Different examples were explored, and the methodology was applied to a number of wastes such as coffee husks, polystyrene and polyethylene. In all cases, the actual temperature measured by thermocouples close to the sample is used, and several runs are fitted using the same kinetic parameters, giving robustness to the results.

A one-pot synthesis of a monolithic Cu2O/Cu catalyst for efficient ozone decomposition

Nowadays, it is necessary and challenging to prepare monolithic catalysts, which are ready for use, preventing the tedious and complicated integration procedure of the powder materials onto a porous substrate.

Acculturation as intergenerational trajectory and accountability concerns in immigrant youth discourse

The aim of this study is to explore the ways in which young ‘second generation’ immigrants from Albania in Greece account for their acculturation in semi-structured interviews and orient to different acculturation strategies. Interviews took place in Thessaloniki and 6 women and 13 men, aged between 21 and 30 years, participated. Analysis, which used the tools and concepts of discursive and rhetorical social psychology, indicated that participants’ accounts of acculturation involve multifaceted temporal, intergenerational and intergroup comparisons and juxtapositions which raise important dilemmas of accountability and involve interesting tensions and contradictions. Within these comparative accounts, participants are concurrently oriented to both construct themselves as active agents of a successful integration procedure, on one hand, and to show affinity to important ‘others’, on the other hand. Therefore, the prioritization of different acculturation strategies constitutes the by-product of managing ideological dilemmas in context.

Data Integration in the Service of Synthetic Research

ABSTRACTAddressing archaeology's most compelling substantive challenges requires synthetic research that exploits the large and rapidly expanding corpus of systematically collected archaeological data. That, in turn, requires a means of combining datasets that employ different systematics in their recording while at the same time preserving the semantics of the data. To that end, we have developed a general procedure that we call query-driven, on-the-fly data integration that is deployed within the Digital Archaeological Record digital repository. The integration procedure employs ontologies that are mapped to the original datasets. Integration of the ontology-based dataset representations is done at the time the query is executed, based on the specific content of the query. In this way, the original data are preserved, and data are aggregated only to the extent necessary to obtain semantic comparability. Our presentation draws examples from the largest application to date: an effort by a research community of Southwest US faunal analysts. Using 24 ontologies developed to cover a broad range of observed faunal variables, we integrate faunal data from 33 sites across the late prehistoric northern Southwest, including about 300,000 individually recorded faunal specimens.

Frequency and Energy Levels

This chapter shows how to measure the Hölder regularity of the weak solutions that are constructed when the scheme is executed more carefully. For this aspect of the convex integration scheme, a notion of frequency energy levels is introduced. This notion is meant to accurately record the bounds which apply to the (v, p, R) coming from the previous stage of the construction. The chapter presents an example of a candidate definition for frequency and energy levels. Based on this definition, the effect of one iteration of the convex integration procedure can be summarized in a single lemma, which states that there is a solution to the Euler-Reynolds equations with new frequency and energy levels. The chapter also considers the High–Low Interaction term and the Transport term.