Mountain wave turbulence in the presence of directional wind shear over the Rocky Mountains

Mountain wave turbulence in the presence of directional wind shear over the Rocky Mountains in Colorado is investigated. Pilot Reports (PIREPs) are used to select cases in which moderate or severe turbulence encounters were reported in combination with significant directional wind shear in the upstream sounding from Grand Junction, CO (GJT). For a selected case, semi-idealized numerical simulations are carried out using the WRF-ARW atmospheric model, initialized with the GJT atmospheric sounding and a realistic but truncated orography profile. In order to isolate the role of directional wind shear in causing wave breaking, sensitivity tests are performed to exclude the variation of the atmospheric stability with height, the speed shear, and the mountain amplitude as dominant wave breaking mechanisms. Significant downwind transport of instabilities is detected in horizontal flow cross-sections, resulting in mountain-wave-induced turbulence occurring at large horizontal distances from the first wave breaking point (and from the orography that generates the waves). The existence of an asymptotic wake, as predicted by Shutts for directional shear flows, is hypothesized to be responsible for this downwind transport. Critical levels induced by directional wind shear are further studied by taking 2D power spectra of the magnitude of the horizontal velocity perturbation field. In these spectra, a rotation of the most energetic wave modes with the background wind, as well as perpendicularity between the background wind vector and the wave-number vector of those modes at critical levels, can be found, which is consistent with the mechanism expected to lead to wave breaking in directional shear flows

The mechanisms and processes of connection: developing a causal chain model capturing impacts of receiving recorded mental health recovery narratives.

BACKGROUND: Mental health recovery narratives are a core component of recovery-oriented interventions such as peer support and anti-stigma campaigns. A substantial number of recorded recovery narratives are now publicly available online in different modalities and in published books. Whilst the benefits of telling one's story have been investigated, much less is known about how recorded narratives of differing modalities impact on recipients. A previous qualitative study identified connection to the narrator and/or to events in the narrative to be a core mechanism of change. The factors that influence how individuals connect with a recorded narrative are unknown. The aim of the current study was to characterise the immediate effects of receiving recovery narratives presented in a range of modalities (text, video and audio), by establishing the mechanisms of connection and the processes by which connection leads to outcomes. METHOD: A study involving 40 mental health service users in England was conducted. Participants were presented with up to 10 randomly-selected recovery narratives and were interviewed on the immediate impact of each narrative. Thematic analysis was used to identify the mechanisms of connection and how connection leads to outcome. RESULTS: Receiving a recovery narrative led participants to reflect upon their own experiences or those of others, which then led to connection through three mechanisms: comparing oneself with the narrative and narrator; learning about other's experiences; and experiencing empathy. These mechanisms led to outcomes through three processes: the identification of change (through attending to narrative structure); the interpretation of change (through attending to narrative content); and the internalisation of interpretations. CONCLUSIONS: This is the first study to identify mechanisms and processes of connection with recorded recovery narratives. The empirically-based causal chain model developed in this study describes the immediate effects on recipients. This model can inform selection of narratives for use in interventions, and be used to support peer support workers in recounting their own recovery narratives in ways which are maximally beneficial to others

Nurses Promoting Inclusive, Safe, Resilient, and Sustainable Cities and Communities: Taking Action on COVID-19, Systemic Racism, and Climate Change.

This article is one in a series in which contributing authors discuss how the United Nations (UN) Sustainable Development Goals (SDGs) are linked to everyday clinical issues; national public health emergencies; and other nursing issues, such as leadership, shared governance, and advocacy. The 2030 Agenda for Sustainable Development, a 15-year plan of action to achieve the goals, was unanimously adopted by all UN member states in September 2015 and took effect on January 1, 2016. The Agenda consists of 17 SDGs addressing social, economic, and environmental determinants of health and 169 associated targets focused on five themes: people, planet, peace, prosperity, and partnership. The SDGs build on the work of the UN Millennium Development Goals, which were in effect from 2000 to 2015. The current article highlights SDG 11-making cities and human settlements inclusive, safe, resilient and sustainable

Comparative genomic analyses of β-lactamase (<i>bla_CMY-42</i>)-encoding plasmids isolated from wastewater treatment plants in Canada

Wastewater treatment plants are useful environments for investigating the occurrence, diversity, and evolution of plasmids encoding clinically relevant antibiotic resistance genes. Our objective was to isolate and sequence plasmids encoding meropenem resistance from bacterial hosts within Canadian WWTPs. We used two enrichment culture approaches for primary plasmid isolation, followed by screening of antibiotic resistance, conjugative mobility, and stability in enteric bacteria. Isolated plasmids were sequenced using Illumina MiSeq and Sanger sequencing methods. Bioinformatics analyses resolved a multi-resistance IncF/MOBF12 plasmid, pFEMG (209,357 bp), harbouring resistance genes to beta-lactam (blaCMY-42, blaTEM-1β, and blaNDM-5), macrolide (mphA-mrx-mphR), tetracycline (tetR-tetB-tetC-tetD), trimethoprim (dfrA12), aminoglycoside (aadA2), and sulfonamide (sul1) antibiotic classes. We also isolated an IncI1/MOBP12 plasmid pPIMR (172,280 bp), carrying similar beta-lactamase and a small multidrug efflux resistance gene cluster (blaCMY-42-blc-sugE) to pFEMG. The co-occurrence of different ARGs within a single 24,552 bp cluster in pFEMG – intersperced with transposons, insertion sequence elements, and a class 1 integron – maybe of significant interest to human and veterinary medicine. Additionally, the presence of conjugative and plasmid maintenance genes in the studied plasmids corresponds to the observed high conjugative transfer frequencies and stable maintenance. Extensive investigation is required to further understand the fitness trade offs of plasmids having differing types of conjugative transfer and maintenance modules.The accepted manuscript in pdf format is listed with the files at the bottom of this page. The presentation of the authors' names and (or) special characters in the title of the manuscript may differ slightly between what is listed on this page and what is listed in the pdf file of the accepted manuscript; that in the pdf file of the accepted manuscript is what was submitted by the author

Neutralizing antibodies against flaviviruses, Babanki virus, and Rift Valley fever virus in Ugandan bats

Introduction: A number of arboviruses have previously been isolated from naturally-infected East African bats, however the role of bats in arbovirus maintenance is poorly understood. The aim of this study was to investigate the exposure history of Ugandan bats to a panel of arboviruses. Materials and methods: Insectivorous and fruit bats were captured from multiple locations throughout Uganda during 2009 and 2011–2013. All serum samples were tested for neutralizing antibodies against West Nile virus (WNV), yellow fever virus (YFV), dengue 2 virus (DENV-2), Zika virus (ZIKV), Babanki virus (BBKV), and Rift Valley fever virus (RVFV) by plaque reduction neutralization test (PRNT). Sera from up to 626 bats were screened for antibodies against each virus. Results and Discussion: Key findings include the presence of neutralizing antibodies against RVFV in 5/52 (9.6%) of little epauletted fruit bats (Epomophorus labiatus) captured from Kawuku and 3/54 (5.6%) Egyptian rousette bats from Kasokero cave. Antibodies reactive to flaviviruses were widespread across bat taxa and sampling locations. Conclusion: The data presented demonstrate the widespread exposure of bats in Uganda to arboviruses, and highlight particular virus-bat associations that warrant further investigation

Community member perceptions of influences on teenage pregnancies

This exploratory qualitative study aimed to provide insight into the factors contributing to the high prevalence rate of teenage pregnancy in South African communities. Focus group were conducted with 193 community members (females = 44.6%; adults = 50.8%, teenagers/youth = 44.0%) and followed by thematic content analysis to interpret the data. Several overarching themes regarding the increasingly common occurrence of teenage pregnancy emerged from the data. These included: the increased acceptability of teenage pregnancy to families and communities for economic and material gain; the influence of social pressure; and the lack of sexual knowledge and provision of sex education. Community members perceived teenage pregnancy as an increasingly common occurrence in their communities. Community members perceived teenage pregnancy to be driven by multiple factors and to require holistic interventions at the individual, family and community level.