164 research outputs found

    Provincial Devonian spores from South China, Saudi Arabia and Australia

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    A spore assemblage from Maoshan, Luquan County, Yunnan Province, South China includes well known Mid Devonian spores including Archaeozonotriletes variabilis, Cirratriradites monogrammos, Grandispora libyensis, Geminospora lemurata, Cymbosporites magnificus and Ancyrospora spp. which constrain the age to Givetian (late Mid Devonian). There are also elements that occur in the Givetian of South China and Australia such as Archaeoperisaccus indistinctus (senior synonym of A. rhacodes) that also occur very rarely in Saudi Arabia. The Maoshan assemblage moreover contains species of Rotaspora. In the Adavale Basin of Australia and Saudi Arabia there is a similar plexus of provincial species of Rotaspora but of Emsian age. In addition, there is the morphologically distinct spore Tribojasporites, a genus that was only known previously from the Emsian of Australia. The converse also occurs with spores such as Dictyotriletes biornatus, only previously known from the late Pragian to mid Emsian of Saudi Arabia, found as rare specimens in Maoshan. This demonstrates that the Maoshan spore assemblage contains spores that are restricted to the northern margin of Gondwana but with younger ranges and represent relict populations that survived in isolation on the South China terrane. Blooms of the hydrodictyacean chlorococcalean alga Musivum gradzinskii previously known only from Poland and Saudi Arabia are also present at Maoshan

    Reading football in Brazil through a boy’s own story

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    This is an Accepted Manuscript of an article published in Qualitative Research in Sport, Exercise and Health on 12 Feb 2014, available online: http://www.tandfonline.com/10.1080/2159676X.2013.877962This essay is a contribution to debates about football in Brazil. It is also an attempt to engage in discussions about how we come to know and talk about the social world around us. The central element of the essay is the story of one young man’s interaction with a particular sporting space and the emotions and insights that are triggered by memories of that place, situated as it is in a rapidly developing country but retaining many of the problems associated with under development. Absolved from any responsibility to adhere to a dominant value system or to feel constrained by research ethics, the storyteller is free to offer honest, if conflicted, personal reflections on a range of issues, including poverty, ‘race’ and sporting values. The result is a story which does not negate the necessity of more orthodox research on sport in Brazil, particularly related to the hosting of sport mega events but which reminds us of the importance of understanding the world through everyday personal experience

    Review about mites (Acari) of rubber trees (Hevea spp., Euphorbiaceae) in Brazil

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    Velocity-space sensitivity of the time-of-flight neutron spectrometer at JET

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    The velocity-space sensitivities of fast-ion diagnostics are often described by so-called weight functions. Recently, we formulated weight functions showing the velocity-space sensitivity of the often dominant beam-target part of neutron energy spectra. These weight functions for neutron emission spectrometry (NES) are independent of the particular NES diagnostic. Here we apply these NES weight functions to the time-of-flight spectrometer TOFOR at JET. By taking the instrumental response function of TOFOR into account, we calculate time-of-flight NES weight functions that enable us to directly determine the velocity-space sensitivity of a given part of a measured time-of-flight spectrum from TOFOR

    Relationship of edge localized mode burst times with divertor flux loop signal phase in JET

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    A phase relationship is identified between sequential edge localized modes (ELMs) occurrence times in a set of H-mode tokamak plasmas to the voltage measured in full flux azimuthal loops in the divertor region. We focus on plasmas in the Joint European Torus where a steady H-mode is sustained over several seconds, during which ELMs are observed in the Be II emission at the divertor. The ELMs analysed arise from intrinsic ELMing, in that there is no deliberate intent to control the ELMing process by external means. We use ELM timings derived from the Be II signal to perform direct time domain analysis of the full flux loop VLD2 and VLD3 signals, which provide a high cadence global measurement proportional to the voltage induced by changes in poloidal magnetic flux. Specifically, we examine how the time interval between pairs of successive ELMs is linked to the time-evolving phase of the full flux loop signals. Each ELM produces a clear early pulse in the full flux loop signals, whose peak time is used to condition our analysis. The arrival time of the following ELM, relative to this pulse, is found to fall into one of two categories: (i) prompt ELMs, which are directly paced by the initial response seen in the flux loop signals; and (ii) all other ELMs, which occur after the initial response of the full flux loop signals has decayed in amplitude. The times at which ELMs in category (ii) occur, relative to the first ELM of the pair, are clustered at times when the instantaneous phase of the full flux loop signal is close to its value at the time of the first ELM

    Gendered representations in Hawai‘i’s anti-GMO activism

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    The aim of this article is to analyse some of the representations of intersectional gender that materialise in activism against genetically modified organisms (GMOs). It uses the case of Hawai‘i as a key node in global transgenic seed production and hotspot for food, land and farming controversies. Based on ethnographic work conducted since 2012, the article suggests some of the ways that gender is represented within movements against GMOs by analysing activist media representations. The article shows how gender, understood intersectionally, informs possibilities for movement-identification, exploring how themes of motherhood, warrior masculinities and sexualised femininities are represented within these movements. The article suggests that some activist representations of gender invoke what could be considered as normative framings of gender similar to those seen in other environmental, food and anti-GMO movements. It is suggested that these gendered representations may influence and limit how different subjects engage with Hawai'i anti-GMO movements. At the same time, contextual, intersectional readings demonstrate the complex histories behind what appear to be gender normative activist representations. Taken together, this emphasis on relative norms of femininities and masculinities may provide anti-GMO organising with familiar social frames that counterbalance otherwise threatening campaigns against (agri)business in the settler state. Understood within these histories, the work that gender does within anti-GMO organising may offer generative examples for thinking through the relationships between gendered representations and situated, indigenous-centred, food and land-based resistances

    Experimental progress in positronium laser physics

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    Human leukocyte antigen alleles associate with COVID-19 vaccine immunogenicity and risk of breakthrough infection

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    Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) vaccine immunogenicity varies between individuals, and immune responses correlate with vaccine efficacy. Using data from 1,076 participants enrolled in ChAdOx1 nCov-19 vaccine efficacy trials in the United Kingdom, we found that inter-individual variation in normalized antibody responses against SARS-CoV-2 spike and its receptor-binding domain (RBD) at 28 days after first vaccination shows genome-wide significant association with major histocompatibility complex (MHC) class II alleles. The most statistically significant association with higher levels of anti-RBD antibody was HLA-DQB1*06 (P = 3.2 × 10−9), which we replicated in 1,677 additional vaccinees. Individuals carrying HLA-DQB1*06 alleles were less likely to experience PCR-confirmed breakthrough infection during the ancestral SARS-CoV-2 virus and subsequent Alpha variant waves compared to non-carriers (hazard ratio = 0.63, 0.42–0.93, P = 0.02). We identified a distinct spike-derived peptide that is predicted to bind differentially to HLA-DQB1*06 compared to other similar alleles, and we found evidence of increased spike-specific memory B cell responses in HLA-DQB1*06 carriers at 84 days after first vaccination. Our results demonstrate association of HLA type with Coronavirus Disease 2019 (COVID-19) vaccine antibody response and risk of breakthrough infection, with implications for future vaccine design and implementation

    The building information modelling trajectory in facilities management: A review

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    There is a paucity of literature that examines building information modelling (BIM) for asset management within the architecture, engineering, construction and owner-operated (AECO) sector. This paper therefore presents a thorough review of published literature on the latest research and standards development that impact upon BIM and its application in facilities management (FM) during the operations and maintenance (O&M) phase of building usage. The purpose is to generate new ideas and provide polemic clarity geared to intellectually challenge readers from across a range of academic and industrial disciplines. The findings reveal that significant challenges facing the FM sector include the need for: greater consideration of long-term strategic aspirations; amelioration of data integration/interoperability issues; augmented knowledge management; enhanced performance measurement; and enriched training and competence development for facilities managers to better deal with the amorphous range of services covered by FM. Future work is also proposed in several key areas and includes: case studies to observe and report upon current practice and development; and supplementary research related to concepts of knowledge capture in relation to FM and the growing use of BIM for asset management
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