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Recent excavations and survey at the Roman and late antique city of Aeclanum provide important insights into developments across the fourth and fifth centuries CE at this site. Located in the inland region of Hirpinia, on the border of Apulia et Calabria and Campania, Aeclanum was insulated from some of the disasters that plagued the coastal regions in this period. It was, however, struck by two natural disasters: an earthquake in the mid-fourth century and the eruption of Vesuvius in 472 CE. Despite these events, new work suggests that the city remained a vital urban center even into the sixth century. In light of this new evidence, this article explores what the built remains, ceramics, and epigraphy reveal about the changing cityscape, economy, and society of Aeclanum. It further situates this evidence within its regional context to demonstrate how urban living was upheld, even in the face of significant environmental, religious, and administrative change. Our focus is on how human agency—of different forms—is manifest in the material evidence, and how this manifestation varies across available datasets and the networks between them. The availability of different datasets makes it a unique case study in this region and allows us to explore aspects of urban life in greater detail than is possible for many nearby cities. By using a pluralistic approach to material output, these examples reveal that, among some communities, circumstances and events long considered to be catastrophic to urban success were not as absolute as once thought. [ABSTRACT FROM AUTHOR]

Turf is not a material frequently associated with construction. However, as a cheap, easily available, and versatile material it was used in antiquity (and has been used in various contexts since) to form unit-based and mass walls, embankments, and ramparts. Some of the best-preserved evidence for historical turf use comes from the Roman period, when it was a mainstay of military construction, being widely used in forts (e.g. along the Rhine and in Britain) and large-scale linear earthworks, most notably thewalls of Hadrian (northern England) and Antoninus Pius (central Scotland). To our knowledge, turf has never been examined as a construction material; its interest has, until now, been restricted to the soil and agricultural sciences and sports engineering. This paper presents the first exploration of turf water retention properties, assessed to understand whether turf behaviour can be collated with that of more traditionalearthen materials, for example cob or rammed earth. Tensiometer and psychrometer methods were used to estimate the water retention curves of turf, representative of that used for construction, harvested from two sites near Crieff, Scotland. The obtained data were analysed in terms of unimodal type functions to understand qualities of the full range of the soil water retention curve for Scottish turf. This work supports a larger project examining how engineering materials principles can explain ancient construction practices. In so doing, we will be well positioned to reintroduce this low-carbon material to the modern construction market.

The Science Museum has in its East Hall one of the finest collections of steam engines anywhere. The collection has traditionally been interpreted in formal taxonomical terms. However, as the display scheme has become physically fragmented, and the museum's relationship with its visitors has been assessed in new ways, so new approaches to interpreting the collection have been sought. The primary and secondary source review underpinning development of a revised gallery scheme for the East Hall suggested the existence of an 'imaginarium of steam', a body of historic material illustrating how the steam engine exerted an imaginative hold on those who built, worked with, and observed it. The steam engine was as much a symbolic and imaginative machine as it was a tangible one. This is reflected in a rich range of sources, stretching far beyond the technical sources so traditionally and closely identified with the engine. This paper will outline some of these primary sources with particular reference to the museum's collection and other appropriate material culture, and attempt to identify some of their shared characteristics, which together form the imaginarium. [ABSTRACT FROM AUTHOR]

This update covers the literature published between approximately June 2022 and April 2023 and is the latest part of a series of annual reviews. It is designed to provide the reader with an overview of the current state of the art with respect to the atomic spectrometric analysis of various metals, chemicals and materials. Advances have been made in several areas. For cultural heritage scientists, it is worth noting that, after many years of inserting analytical data into chemometric tools in an attempt to elucidate provenance, several free to use algorithms that take an inexperienced analyst through the entire process have been developed. It is envisaged that such algorithms will also be developed for forensic samples. In other areas, there has been a big increase in papers reporting methods for analysing coals, with many of these applications employing LIBS. This increase is presumably a result of the use of coal increasing rapidly in some countries. The use of LIBS for analyses is still growing in many areas. For ferrous and non-ferrous metals, the development of more reliable calibration strategies for LIBs has been a common theme. The standoff ability of LIBS has also been put to good use in the nuclear industry and for the detection of explosives. Waste management of assorted materials, e.g. polymers, metals, etc. has also used LIBS analyses, often used in conjunction with chemometric data analysis tools. [ABSTRACT FROM AUTHOR]