Characterization of lime mortar additivated with crystallization modifiers

Additivating mortars with crystallization modifiers is a novel approach to mitigate salt crystallization damage in historic masonry. Once verified the effectiveness of crystallization modifiers in bulk solution, the next step consists in verifying whether: (i) modifiers are still effective when mixed in mortar and going through the carbonation process and (ii) modifiers alter any mortar properties which might limit their application. This research addresses these issues for sodium ferrocyanide and borax, modifiers for sodium chloride, and sodium sulfate, respectively. Several experimental techniques have been applied to elucidate these questions. The results show that the selected modifiers are still able to alter the salt crystallization after going through the carbonation process of the mortar. Besides, no major effects of the modifiers on the fresh and hardened mortar properties were observed. It can therefore be concluded that there are no restraints for the future use of these crystallization modifiers in restoration mortars.     

Sustaining artistic practices post George Brandis’s controversial Australia Council arts funding changes: cultural policy and visual artists’ careers in Australia

This article analyses how public funding enables artistic practices from the perspectives of both national cultural policy decision makers, and our three interviewed subjects in the visual arts. Funding from the Australia Council for the Arts is examined in terms of the extent to which it is perceived to dis/enable ongoing artistic practice. This examination is timely given Australia’s former Minister for the Arts George Brandis’s 2015 shock annexation of Australia Council funding: $104.7 million was originally to be transferred from the Australia Council to the newly established National Programme for Excellence in the Arts (NPEA). This body represented a move away from the ‘arms-length’, independent peer-reviewed funding decisions with the arts minister having the ultimate authority with regard to the NPEA. The NPEA has now been renamed Catalyst – Australian Arts and Culture Fund (Catalyst) as a result of consultations and feedback relating to the NPEA.     

“Who can play this game?” The lived experiences of doctoral candidates and early career women in the neoliberal university

Work intensification is a characteristic of the current neoliberal trend in academia. Postgraduates and Early Career Researchers (PhD candidates and ECRs) in geography are no strangers to this development but are rarely the focus of publications or dialogue on the (gendered) outcomes of the academy’s neoliberal agenda. Encouraged by the recent emotional turn in the social sciences and humanities, this article seeks to unveil some of the everyday particulars of life in academia for PhD candidates and ECRs under the tide of financial cuts and increased competition for funding. We explore the question: “Who can – and indeed wants to – play this game?” As three early and one mid-career academic women in four different institutions in the Global North, we make use of reflexivity, autobiographical writing, and reflection, to analyze increasingly stressful and demanding working conditions. Through the depiction of our lived experiences, we contend that the push for ever increasing outputs attends most of our time and represents a distinctly different form of scholarship than has been traditionally considered as the pathway into academia, not seldom jeopardizing well-being of young academics, one that needs to be interrogated by geographers.     

Glass and glass production in the Oman peninsula in antiquity reconsidered – chemical and mineralogical investigation of sands

A batch of green‐ and amber‐coloured glass chunks and unguentaria dating from the first century CE was found in 2007 at Dibba al Hisn, a site on the Arabian Sea coast of the United Arab Emirates (UAE). Its elemental and isotopic composition revealed the glass to be of a previously unknown plant ash glass type, different from known contemporary Roman, Mesopotamian, and Indian glass. The Sr isotopic composition of the glass corresponds to locally available plants, pointing to the possible existence of a first‐century CE local glass production centre. To explore this possibility, sands from around the UAE were analysed to establish their suitability for glass making and correspondence with the Dibba finds. This paper presents the results of the elemental analysis of fourteen sands. The analysis, performed using inductively coupled plasma optical emission spectroscopy (ICP‐OES), revealed all sands to be rich in lime and alumina. X‐ray diffraction revealed the presence of calcite and other carbonate minerals, as well as antigorite and quartz. Comparison of the sand compositions to average first‐century CE non‐Roman glass found at Dibba showed them to be unsuitable as raw material for producing the glass of Dibba. The evidence thus identifies this glass batch as imported, contrary to what was suggested before. This paper also reviews the occurrence of thick‐walled unguentaria in the region.     

Book reviews

G. Adrian Horridge. The design of planked boats of the Moluccas. [Greenwich]: The National, Martime Museum, 1978. [vi], iii, 54 pp. (Maritime Monographs and Reports, No. 38.).

G. Adrian Horridge. The lambo or prahu bot: a Western ship in an Eastern setting. [Greenwich]: National Maritime Museum, 1979. [ii], iv, 41 pp. (Maritime Monographs and Reports, No. 39.).

G. Adrian Horridge. The Konjo boatbuilders and the Bugis prahus of South Sulawesi. [Greenwich]: National Maritime Museum, 1979. [ii], vi, 56 pp. (Maritime Monographs and Reports, No. 40.).

Sri Owen. Indonesian food and cookery. London: Prospect Books, 1980. 255pp., map [on inside back cover]. £4.95.

James J. Fox (ed.). The flow of life: essays on eastern Indonesia. Cambridge, Mass., and London, Harvard University Press: 1980. xi, 372 pp. (Harvard Studies in Cultural Anthropology, 2.)     

Palaeolithic chert exploitation in the limestone stretch of the Egyptian Nile Valley

Different raw material procurement strategies are attested in the limestone stretch of the Egyptian Nile Valley. Chert cobbles from Nile terraces or from their derived deposits were generally used. Four main procurement strategies have been recognized. During the Middle Palaeolithic intensive surface collecting was the most common strategy. However, open quarrying techniques involving features such as ditches are also attested. True subterranean mining with vertical shafts and underground galleries was known by the Early Upper Palaeolithic at 35,000 years BP. Extracted nodules were processed at the procurement sites. The study of the reduction strategies has proved valuable in gaining a better understanding of the Palaeolithic sequence of the Egyptian Nile Valley.

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Résumé Différentes stratégies d'obtention de matière première ont été reconnues dans la zone calcaire de la vallée du Nil égyptien. En majorité, ce sont des galets de chert qui ont été utilisés. Les stratégies d'obtention se classent en quatre types. Au Paléolithique Moyen la méthode la plus fréquente était la collection intensive en surface. Mais il y eut aussi une technique d'exploitation en profondeur, à l'aide de tranchées à ciel ouvert. Une véritable extraction minière avec des puits verticaux et des galleries souterraines fut pratiquée dès le début du Paléolithique Supérieur, vers 35.000 BP. Les galets extraits étaient réduits sur les sites d'exploitation mêmes. L'étude des processus de réduction nous a permis de mieux comprendre la séquence paléolithique de la vallée du Nil égyptien.