Ötzi the Iceman. Examining new evidence from the famous copper age mummy

The Iceman mummy, nicknamed Ötzi, was discovered in 1991 amidst sheets of melting ice on the Tisenjoch pass of the Similaun glacier in the Tyrolean Alps. He was found on the border between Italy and Austria, at an altitude of 3,200 m above sea level. He is a well-preserved male human corpse, dark in color, and dates to the early Copper Age, indicating he is more than 5,000 years old (ca. 3,250 yrs. cal BCE). His belongings, scattered around the body, included a bow and quiver with arrows, a complete copper-bladed axe, a flint dagger with a wicker sheath, two birch wood vessels clad with maple leaves, remnants of a backpack, a leather pouch with small objects, fur and leather garments, shoes, and other minor artifacts. When scientists realized the antiquity of the find, the media response was overwhelming and Ötzi captivated audiences far and wide

Mechanical properties and strain monitoring of glass-epoxy composites with graphene-coated fibers

An engineered interphase can improve the mechanical properties of epoxy/glass composites simultaneously inducing a piezoresistive response. To prove this concept, E-glass fibers were coated with graphene oxide (GO) by electrophoretic deposition, while reduced graphene oxide (rGO) coated fibers were obtained by subsequent chemical reduction. The fiber-matrix interfacial shear strength (measured by the single-fiber fragmentation test) increased for both GO and rGO coated fibers. Unidirectional composites with a high content of both uncoated and coated fibers were produced and mechanically tested under various configurations (three-point bending, short beam shear and mode-I fracture toughness, creep). Composites with coated fibers performed similarly or better than composites prepared with uncoated fibers. Finally, composites with rGO coated fibers were tested for their piezoresistive response under both static and dynamic conditions. The electrical resistance changed proportionally to applied strain thus confirming the possibility of using composites with rGO coated fibers as strain sensors in load-bearing components

Fabrication of a Highly NO2-Sensitive Gas Sensor Based on a Defective ZnO Nanofilm and Using Electron Beam Lithography

Hazardous substances produced by anthropic activities threaten human health and the green environment. Gas sensors, especially those based on metal oxides, are widely used to monitor toxic gases with low cost and efficient performance. In this study, electron beam lithography with two-step exposure was used to minimize the geometries of the gas sensor hotplate to a submicron size in order to reduce the power consumption, reaching 100 °C with 0.09 W. The sensing capabilities of the ZnO nanofilm against NO2 were optimized by introducing an enrichment of oxygen vacancies through N2 calcination at 650 °C. The presence of oxygen vacancies was proven using EDX and XPS. It was found that oxygen vacancies did not significantly change the crystallographic structure of ZnO, but they significantly improved the electrical conductivity and sensing behaviors of ZnO film toward 5 ppm of dry air

Targeted next generation sequencing in Italian patients with Usher syndrome: Phenotype-genotype correlations

Abstract We report results of DNA analysis with next generation sequencing (NGS) of 21 consecutive Italian patients from 17 unrelated families with clinical diagnosis of Usher syndrome (4 USH1 and 17 USH2) searching for mutations in 11 genes: MYO7A, CDH23, PCDH15, USH1C, USH1G, USH2A, ADGVR1, DFNB31, CLRN1, PDZD7, HARS. Likely causative mutations were found in all patients: 25 pathogenic variants, 18 previously reported and 7 novel, were identified in three genes (USH2A, MYO7A, ADGRV1). All USH1 presented biallelic MYO7A mutations, one USH2 exhibited ADGRV1 mutations, whereas 16 USH2 displayed USH2A mutations. USH1 patients experienced hearing problems very early in life, followed by visual impairment at 1, 4 and 6 years. Visual symptoms were noticed at age 20 in a patient with homozygous novel MYO7A missense mutation c.849G > A. USH2 patients’ auditory symptoms, instead, arose between 11 months and 14 years, while visual impairment occurred later on. A homozygous c.5933_5940del;5950_5960dup in USH2A was detected in one patient with early deafness. One patient with homozygous deletion from exon 23 to 32 in USH2A suffered early visual symptoms. Therefore, the type of mutation in USH2A and MYO7A genes seems to affect the age at which both auditory and visual impairment occur in patients with USH

Forum : Populism, Identity Politics, and the Archaeology of Europe

SSR gratefully acknowledges M.J. Walsh, J.-L. Renaud, and another anonymous col- league for comments on this manuscript. MB would like to thank P. Pavúk, N. Vlhová, and M. Havlíková for reading and commenting on his paper. KK grate- fully acknowledges the editorial help of his friend Sappho Haralambous-Howe. Naturally, the views and opinions expressed here are those of the authors and do not reflect the official policy or position of other agencies.Peer reviewedPublisher PD

Communication Uneven. Acceptance of and Resistance to Foreign Influences in the Connected Ancient Mediterranean

This volume has its origin in a similarly entitled session organised at the 24th Annual Meeting of the European Association of Archaeologists in Barcelona in 2018. The specific aim of both the session and this volume was to measure acceptance of, and resistance to, outside influences within Mediterranean coastal settlements and their immediate hinterlands, with an open time range, but with a particular focus on the processes not reflecting simple commercial routes, but taking place at an intercultural level, in situations of developed connectedness. Following a general discussion of the theoretical and long-lasting facets of the discussion on communication, and of some of the reasons for its unevenness, the contributions in the volume give a wide and stimulating view of the ongoing debate about Mediterranean interaction and communication. The papers’ timespan is large: from the Late Neolithic of Crete, in the 5th - 4th millennium BCE, to the Macedonian conquest of Thrace, in the 4th century BCE. Most contributions, however, focus on the Middle to Late Bronze Ages, as this is a phase of particularly intense communication, which matches the interests and connections of the editors. The geographic frame extends from the Central Mediterranean to Thrace, Cyprus and the Levant, with an important focus on Crete and Mycenaean Greece. Other papers, more than specific areas, instead discuss the figures of some of the actors of the intra-Mediterranean interregional communication, and the nuances of their roles: warriors and merchants

The Death Toll - La Conta dei morti

The Conference aimed at promoting a wide-ranging discussion of the evolving perspectives on human deposition and burial in the European Bronze Age. The day has been structured in order to stimulate discussion, with a limited number of lengthy presentations, the intervention of a discussant for each of them, and a considerable time left for debate