792 research outputs found
Non-compact QED(3) coupled to a four-fermi interaction
We present preliminary numerical results for the three dimensional
non-compact QED with a weak four-fermion term in the lattice action. Approaches
based on Schwinger-Dyson studies, arguments based on thermodynamic inequalities
and numerical simulations lead to estimates of the critical number of fermion
flavors (below which chiral symmetry is broken) ranging from to
. The weak four-fermion coupling provides the framework for an
improved algorithm, which allows us to simulate the chiral limit of massless
fermions and expose delicate effects.Comment: 3 pages, Contribution to Lattice2004(chiral), Fermilab, June 21-26,
200
The spatial distribution of ammonia, methane and nitrous oxide emissions from agriculture in the UK 2018
Annual Report to Defra (Project SCF0107). âą Agricultural emissions of ammonia, methane and nitrous oxide for 2018 were
spatially distributed across the UK, and maps produced.
âą Holding-level agricultural statistics on livestock numbers and crop areas for 2018
were not available in sufficient time for a full inventory model run. Therefore
emission estimates produced for the 2018 inventory were derived by scaling the
2017 emissions based on the changes to 2018 in DA-level livestock numbers and
crop areas.
âą Non-disclosive agricultural emission maps were produced at a grid resolution of 1
km by 1 km, using detailed agricultural census data, land cover data (Rowland et
al., 2017), agricultural practice information (e.g. fertiliser application rates, stocking
densities) and emission source strength data from the UK emissions inventories for
agriculture 2017 (Misselbrook and Gilhespy 2020 and Brown et al. 2020).
âą All emission maps correspond to the totals reported by Rothamsted Research
North Wyke (RResNW) for 2018
Ammonia emissions from UK non-agricultural sources in 2017: contribution to the National Atmospheric Emission Inventory
This report is part of the National Atmospheric Emissions Inventory (NAEI) and Greenhouse Gas Inventory (GHGI) project
AROMA - Agri-Environment Reduction Options for Mitigating Ammonia: assessment of the effects of RDPE environmental land management schemes on air quality
Measures available under agri-environment and grant schemes were assessed for their ammonia mitigation potential
A nitrogen budget for Scotland
UKCEH report to SEPA. The aim of this study was to quantify key nitrogen flows for Scotland, bringing together the most
recent available data for soils, water, air and human consumption/production (with an emphasis
on agriculture, nutrition and waste). Losses of N to water (132 kt N yr-1), air (80 kt N yr-1) and
terrestrial systems (90 kt N through atmospheric deposition) estimated here are substantial, and
these are mainly due to agricultural activities and, to a smaller extent, waste
recycling/processing. Improved nutrient use efficiency is critical for delivering both
environmental and economic benefits. However, further work is required to complete currently
unquantified and uncertain flows and provide more detail on key activities, to enable the
development of policy options, in conjunction with SEPAâs Sector Plans
Social class and changes in Australian women's affect and alcohol consumption during COVID-19
Introduction: Before the pandemic, mid-life women in Australia were among the âheaviestâ female alcohol consumers, giving rise to myriad preventable health risks. This paper uses an innovative model of social class within a sample of Australian women to describe changes in affective states and alcohol consumption patterns across two time points during COVID-19. Methods: Survey data were collected from Australian mid-life women (45â64 years) at two time points during COVID-19âMay 2020 (N = 1,218) and July 2020 (N = 799). We used a multi-dimensional model for measuring social class across three domainsâeconomic capital (income, property and assets), social capital (social contacts and occupational prestige of those known socially), and cultural capital (level of participation in various cultural activities). Latent class analysis allowed comparisons across social classes to changes in affective states and alcohol consumption patterns reported at the two time points using alcohol consumption patterns as measured by the Alcohol Use Disorders Identification TestâConsumption (AUDIT-C) and its component items. Results: Seven social classes were constructed, characterized by variations in access to capital. Affective states during COVID-19 differed according to social class. Comparing between the survey time points, feeling fearful/anxious was higher in those with high economic and cultural capital and moderate social capital (âemerging affluentâ). Increased depression was most prominent in the class characterized by the highest volumes of all forms of capital (âestablished affluentâ). The social class characterized by the least capital (âworking classâ) reported increased prevalence of uncertainty, but less so for feeling fearful or anxious, or depressed. Women's alcohol consumption patterns changed across time during the pandemic. The ânew middleâ classâa group characterized by high social capital (but contacts with low prestige) and minimal economic capitalâhad increased AUDIT-C scores. Conclusion: Our data shows the pandemic impacted women's negative affective states, but not in uniform ways according to class. It may explain increases in alcohol consumption among women in the emerging affluent group who experienced increased feelings or fear and anxiety during the pandemic. This nuanced understanding of the vulnerabilities of sub-groups of women, in respect to negative affect and alcohol consumption can inform future pandemic policy responses designed to improve mental health and reduce the problematic use of alcohol. Designing pandemic responses segmented for specific audiences is also aided by our multi-dimensional analysis of social class, which uncovers intricate differences in affective states amongst sub-groups of mid-life women.Belinda Lunnay, Barbara Toson, Carlene Wilson, Emma R. Miller, Samantha Beth Meyer, Ian N. Olver, Kristen Foley, Jessica A. Thomas and Paul Russell War
COVID-19, alcohol consumption and stockpiling practises in midlife women: repeat surveys during lockdown in Australia and the United Kingdom
Introduction: This project examined the impact of COVID-19 and associated restrictions on alcohol practises (consumption and stockpiling), and perceptions of health risk among women in midlife (those aged 45â64 years). Methods: We collected online survey data from 2,437 midlife women in the United Kingdom (UK) and Australia in May 2020, recruited using a commercial panel, in the early days of mandated COVID-19 related restrictions in both countries. Participants were surveyed again (N = 1,377) in July 2020, at a time when COVID-19 restrictions were beginning to ease. The surveys included the Alcohol Use Disorder Identification TestâConsumption (AUDIT-C) and questions alcohol stockpiling. Analysis involved a range of univariate and multivariate techniques examining the impact of demographic variables and negative affect on consumption and acquisition outcomes. Results: In both surveys (May and July), UK women scored higher than Australian women on the AUDIT-C, and residence in the UK was found to independently predict stockpiling of alcohol (RR: 1.51; 95% CI: 1.20, 1.91). Developing depression between surveys (RR: 1.53; 95% CI: 1.14, 2.04) and reporting pessimism (RR: 1.42; 95% CI: 1.11, 1.81), and fear/anxiety (RR: 1.33; 95% CI: 1.05, 1.70) at the beginning of the study period also predicted stockpiling by the end of the lockdown. Having a tertiary education was protective for alcohol stockpiling at each time point (RR: 0.69; 95% CI: 0.54, 0.87). Conclusions: COVID-19 was associated with increases in risky alcohol practises that were predicted by negative emotional responses to the pandemic. Anxiety, pessimism and depression predicted stockpiling behaviour in UK and Australian women despite the many demographic and contextual differences between the two cohorts. Given our findings and the findings of others that mental health issues developed or were exacerbated during lockdown and may continue long after that time, urgent action is required to address a potential future pandemic of alcohol-related harms.Emma R. Miller, Ian N. Olver, Carlene J. Wilson, Belinda Lunnay, Samantha B. Meyer, Kristen Foley ... et al
Mutation in triangulated categories and rigid Cohen-Macaulay modules
We introduce the notion of mutation of -cluster tilting subcategories in a
triangulated category with Auslander-Reiten-Serre duality. Using this idea, we
are able to obtain the complete classifications of rigid Cohen-Macaulay modules
over certain Veronese subrings.Comment: 52 pages. To appear in Invent. Mat
Intervening with healthcare workers' hand hygiene compliance, knowledge, and perception in a limited-resource hospital in Indonesia: A randomized controlled trial study
Background: Hand hygiene is recognized as an important measure to prevent healthcare-associated infections. Hand hygiene adherence among healthcare workers is associated with their knowledge and perception. This study aimed to evaluate the effect of thre
Measurement of the polarisation of W bosons produced with large transverse momentum in pp collisions at sqrt(s) = 7 TeV with the ATLAS experiment
This paper describes an analysis of the angular distribution of W->enu and
W->munu decays, using data from pp collisions at sqrt(s) = 7 TeV recorded with
the ATLAS detector at the LHC in 2010, corresponding to an integrated
luminosity of about 35 pb^-1. Using the decay lepton transverse momentum and
the missing transverse energy, the W decay angular distribution projected onto
the transverse plane is obtained and analysed in terms of helicity fractions
f0, fL and fR over two ranges of W transverse momentum (ptw): 35 < ptw < 50 GeV
and ptw > 50 GeV. Good agreement is found with theoretical predictions. For ptw
> 50 GeV, the values of f0 and fL-fR, averaged over charge and lepton flavour,
are measured to be : f0 = 0.127 +/- 0.030 +/- 0.108 and fL-fR = 0.252 +/- 0.017
+/- 0.030, where the first uncertainties are statistical, and the second
include all systematic effects.Comment: 19 pages plus author list (34 pages total), 9 figures, 11 tables,
revised author list, matches European Journal of Physics C versio
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