Composition profiles of InAs–GaAs quantum dots determined by medium-energy ion scattering

The composition profile along the [001] growth direction of low-growth-rate InAs–GaAs quantum dots (QDs) has been determined using medium-energy ion scattering (MEIS). A linear profile of In concentration from 100% In at the top of the QDs to 20% at their base provides the best fit to MEIS energy spectra

Superhero comics and the digital communications circuit: a case study of <i>Strong Female Protagonist</i>

This article examines the ongoing superhero webcomic Strong Female Protagonist (2012-present), by Brannon Lee Mulligan and Molly Ostertag and employs it as a case study to analyse the new communications circuit created by the digital production and delivery of comics. It adopts a perspective drawn from Book History to frame the communication model of print comics and to evaluate how webcomics such as Strong Female Protagonist redefine the role of readers, authors and publishers

Perceptions, preferences and barriers: A qualitative study of greenspace and under-representation in Leeds, UK

1. Greenspaces facilitate well-being benefits for humans in several ways including through cognitive restoration, physical exercise and social interaction. However, some groups are under-represented in greenspaces, including women, older people, those with health conditions, people with lower socioeconomic status and people from ethnic minority backgrounds, and so are less likely to accrue these benefits. / 2. Using thematic analysis and semi-structured interviews with 40 individuals from under-represented groups in Leeds, UK, we explore (1) a range of perceived barriers to greenspace access, (2) how spending time in greenspace contributes to well-being for these groups, (3) the perceived positive and negative aspects of greenspace, (4) what impact COVID-19 had on access to greenspace and (5) how greenspaces could be improved. / 3. We also highlight inter-group differences and how some barriers disproportionately affect some of the groups in this study. Safety concerns were particularly important for women and people with low incomes, which included problems with anti-social behaviour (e.g. incivilities and disorder). Cultural barriers were also evident with ethnic minority participants often citing concerns about dogs and issues with visibility and prejudice. Participants desired physical improvements to the quality of greenspaces, along with easier access and transport options, changes in policy regarding dogs and increased security and park wardens to limit anti-social behaviour. / 4. We argue that to increase visitation for under-represented groups, upgrades in the physical environment must be coupled with harnessing community involvement and co-design. Some group differences and tensions in greenspaces, and problems with anti-social behaviours and safety concerns might be limited by more considerate planning and incorporating research findings that address these tensions through intergroup contact

Crystal Structure and Magnetism of the Linear-Chain Copper Oxides Sr5Pb3-xBixCuO12

The title quasi-1D copper oxides (0=< x =<0.4) were investigated by neutron diffraction and magnetic susceptibility studies. Polyhedral CuO4 units in the compounds were found to comprise linear-chains at inter-chain distance of approximately 10 A. The parent chain compound (x = 0), however, shows less anisotropic magnetic behavior above 2 K, although it is of substantially antiferromagnetic (mu_{eff}= 1.85 mu_{B} and Theta_{W} = -46.4 K) spin-chain system. A magnetic cusp gradually appears at about 100 K in T vs chi with the Bi substitution. The cusp (x = 0.4) is fairly characterized by and therefore suggests the spin gap nature at Delta/k_{B} ~ 80 K. The chain compounds hold electrically insulating in the composition range.Comment: To be published in PR

The use of routine outcome measures in two child and adolescent mental health services: a completed audit cycle

Background: Routine outcome measurement (ROM) is important for assessing the clinical effectiveness of health services and for monitoring patient outcomes. Within Child and Adolescent Mental Health Services (CAMHS) in the UK the adoption of ROM in CAMHS has been supported by both national and local initiatives (such as government strategies, local commissioning policy, and research). Methods: With the aim of assessing how these policies and initiatives may have influenced the uptake of ROM within two different CAMHS we report the findings of two case-note audits: a baseline audit conducted in January 2011 and a re-audit conducted two years later in December 2012-February 2013. Results: The findings show an increase in both the single and repeated use of outcome measures from the time of the original audit, with repeated use (baseline and follow-up) of the Health of the Nation Outcome Scale for Children and Adolescents (HoNOSCA) scale increasing from 10% to 50% of cases. Re-audited case-notes contained more combined use of different outcome measures, with greater consensus on which measures to use. Outcome measures that were applicable across a wide range of clinical conditions were more likely to be used than symptom-specific measures, and measures that were completed by the clinician were found more often than measures completed by the service user. Conclusions: The findings show a substantial improvement in the use of outcome measures within CAMHS. These increases in use were found across different service organisations which were subject to different types of local service priorities and drivers

Climate Impacts on Agriculture: Implications for Forage and Rangeland Production

Projections of temperature and precipitation patterns across the United States during the next 50 yr anticipate a 1.5 to 2°C warming and a slight increase in precipitation as a result of global climate change. There have been relatively few studies of climate change effects on pasture and rangeland (grazingland) species compared to those on crop species, despite the economic and ecological importance of the former. Here we review the literature on responses of pastureland and rangeland species to rising atmospheric CO2 and climate change (temperature and precipitation) and discuss plant and management factors likely to influence pastureland and rangeland responses to change (e.g., community composition, plant competition, perennial growth habit, seasonal productivity, and management methods). Overall, the response of pastureland and rangeland species to increased [CO2] is consistent with the general responses of C3 and C4 vegetation, although exceptions exist. Both pastureland and rangeland species may experience accelerated metabolism and advanced development with rising temperature, often resulting in a longer growing season. However, soil resources will often constrain temperature effects. In general, it is expected that increases in [CO2] and precipitation will enhance rangeland net primary production (NPP) whereas increased air temperatures will either increase or decrease NPP. Much of the uncertainty in predicting how pastureland and rangeland species will respond to climate change is due to uncertainty in future projections of precipitation, both globally and regionally. This review reveals the need for comprehensive studies of climate change impacts on pastureland and rangeland ecosystems that include an assessment of the mediating effects of grazing regimes and mutualistic relationships (e.g., plant roots-nematodes; N-fixing organisms) as well as changes in water, carbon, and nutrient cycling