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The COVID-19 pandemic has required healthcare systems to be creative and adaptable in response to an unprecedented crisis. Below we describe how we prepared for and adapted to this pandemic at our decentralized, quaternary-care department of emergency medicine, with specific recommendations from our experience. We discuss our longstanding history of institutional preparedness, as well as adaptations in triage, staffing, workflow, and communications. We also discuss innovation through working with industry on solutions in personal protective equipment, as well as telemedicine and methods for improving morale. These preparedness and response solutions and recommendations may be useful moving forward as we transition between response and recovery in this pandemic as well as future pandemics.

Postsocialist Eastern Europe is one region where economic restructurings coincide with state-building processes, both of which lead to a reordering of national values and a redefining of national identity. The former USSR continues to be a reference point for adults in western Ukraine as they make sense of ongoing uncertainties. The generation born after socialism and Ukraine's independence in 1991, however, has learned what life was like before it was transformed only through the accounts of others. As a result, the way these young people relate to the cultural, political, and economic elements associated with socialism and postsocialism are not the same as what the older generation expects of them. Drawing upon ethnographic and linguistic data collected over sixteen months at two public schools in western Ukraine, this research examines how space and time work in concert to allow young people in contemporary Ukraine to make sense of the world they live in. Specifically, I apply Bakhtin's notion of the chronotope, a space-time association that underlies people's experiences and conceptions of personhood, to contend that teenagers draw upon multiple linkages between space and time in order to position themselves among their peers, within their local communities, and towards the wider global community. My analysis suggests that teenagers position themselves in relation to different social identities by constructing multiple chronotopes of tradition and modernity. Specifically, I examine how these space-time associations underlie teenagers' attitudes towards out-migration, language use and linguistic variability. These chronotopes play an important role in how Ukrainian teenagers perceive the differences between the older and younger generations, between rural and urban residents, and between Ukrainians and the rest of the world. In addition, socioeconomic class and differing ideologies of language influence how space and time are valued within these dichotomous relat

In the present study, the authors investigated the influence of carbon and lipid sources on regional differences in liver trace element (As, Cd, Cu, total Hg, Mn, Pb, Rb, Se, and Zn) concentrations measured in polar bears (Ursus maritimus) (n=121) from 10 Alaskan, Canadian Arctic, and East Greenland subpopulations. Carbon and lipid sources were assessed using δ13C in muscle tissue and fatty acid (FA) profiles in subcutaneous adipose tissue as chemical tracers. A negative relationship between total Hg and δ13C suggested that polar bears feeding in areas with higher riverine inputs of terrestrial carbon accumulate more Hg than bears feeding in areas with lower freshwater input. Mercury concentrations were also positively related to the FA 20:1n-9, which is biosynthesized in large amounts in Calanus copepods. This result raises the hypothesis that Calanus glacialis are an important link in the uptake of Hg in the marine food web and ultimately in polar bears. Unadjusted total Hg, Se, and As concentrations showed greater geographical variation among polar bear subpopulations compared with concentrations adjusted for carbon and lipid sources. The Hg concentrations adjusted for carbon and lipid sources in Bering–Chukchi Sea polar bear liver tissue remained the lowest among subpopulations. Based on these findings, the authors suggest that carbon and lipid sources for polar bears should be taken into account when one is assessing spatial and temporal trends of long-range transported trace elements.

Despite the widespread use of bones in ancient DNA (aDNA) studies, relatively little concrete information exists in regard to how the DNA in mineralised collagen degrades, or where it survives in the material's architecture. While, at the macrostructural level, physical exclusion of microbes and other external contaminants may be an important feature, and, at the ultrastructural level, the adsorption of DNA to hydroxyapatite and/or binding of DNA to Type I collagen may stabilise the DNA, the relative contribution of each, and what other factors may be relevant, are unclear. There is considerable variation in the quality of DNA retrieved from bones and teeth. This is in part due to various environmental factors such as temperature, proximity to free water or oxygen, pH, salt content, and exposure to radiation, all of which increase the rate of DNA decay. For example, bone specimens from sites at high latitudes usually yield better quality DNA than samples from temperate regions, which in turn yield better results than samples from tropical regions. However, this is not always the case, and rates of success of DNA recovery from apparently similar sites are often strikingly different. The question arises as to whether this may be due to post-collection preservation or just an artefact of the extraction methods used in these different studies? In an attempt to resolve these questions, we examine the efficacy of DNA extraction methods, and the quality and quantity of DNA recovered from both artificially degraded, and genuinely ancient, but well preserved, bones. In doing so we offer hypotheses relevant to the DNA degradation process itself, and to where and how the DNA is actually preserved in ancient bone.

MATERIALS AND METHODS Stable Carbon Isotope Analysis and Quality Control Fatty Acids Analysis and Quality Control Mercury and Other Trace Metal and Element Analysis and Quality Control REFERENCE SECTION

Brochure for a symposium held June 13-15, 2002 at The Metropolitan Museum of Art

With increasing migration, the divisions between rural and urban spaces are becoming both more pronounced and more ambiguous, complicating territorial bases of the nation-state. In Ukraine, the nation is intimately rooted in the rural, however, this same rurality can also be viewed as a hindrance to the nation becoming an equal member in the global community. These competing notions of Ukrainian identity can be seen in how teenagers view themselves as members of a wider, global community, and their views of the opportunities and life trajectories available to them as members of the Ukrainian nation. Western Ukrainian teenagers’ perceptions of rural and urban places include notions of temporality that are associated with each kind of space and the inhabitants of each space. Competing discourses of the Ukrainian nation can be better understood by examining how debates over the role of the village reflect underlying notions of temporal and spatial meaning, which help shape how young people come to define who they are and who they hope to become. I propose that the incorporation of the rural as a site for creating and sustaining a Ukrainian identity differs among urban teenagers in western Ukraine due to socioeconomic class. While both working and middle class teenagers view the Ukrainian nation as borne of a rural pastoral, they construct different paradigms of the rural and its relationship to the urban spaces in which they live. Those of the middle class see rural spaces as “lost in time,” places that have been unaffected by the rest of modern society. The working class, in contrast, continues to view rural spaces, and the people that inhabit them, as valuable in sustaining authentic Ukrainian culture, which they see as threatened by the anonymity of modern urban life. I apply a chronotopic lens of analysis to show how these different paradigms of the rural and urban are connected to different understandings of Ukrainian identity, history, and the aspirations of the