Dissolved Cu concentrations in the Strait of Georgia: trends, speciation, and accumulation by local calanoid copepods

Most research on the effects of copper (Cu) on marine ecosystems has focused on benthic organisms and Cu concentrations in the sediments. In contrast, little is known about the effects of dissolved copper (dCu) in pelagic food webs. In most marine waters, more than 99.9% of dCu is bound to organic ligands. These ligands diminish dCu toxicity to aquatic organisms by lowering the concentrations of inorganic dCu, the most bioavailable species of Cu. For the past year, we have studied seasonal trends of dCu concentrations in the Strait of Georgia and have measured and characterized its speciation in seawater. Measurements taken in 2016 ranged from 5.4 to 23.3nM dCu, which are comparable to those found in San Francisco Bay and Puget Sound. Additionally, the highest concentrations were measured when the Fraser River flow rates were the fastest. Dissolved Cu levels were highest in the surface layer (0-50m), followed by the deep layer (200m to the bottom), with the lowest levels occurring in the intermediate waters. The concentrations in the intermediate layer coincide with those in the incoming low dCu- waters from the Pacific Ocean. Furthermore, using 64Cu as a radiotracer, we have measured uptake rates of Cu, from the dissolved and the particulate fractions, by local calanoid copepods exposed to in situ Cu levels. Our data show that copepods can easily accumulate Cu from the dissolved phase. This research provides much-needed information on dissolved Cu in a region historically known to harbor smelting and mining activities, and currently active maritime trade

Perspectives: Dementia education in Higher Education Institutions, now and in the future: the role of the professional regulatory bodies in the UK

Dementia is a global challenge and educating and upskilling the workforce is a policy imperative. A World Health Organisation priority area is the development of dementia knowledge and skills amongst health and social care professionals. The European Parliament has called for European countries to develop action plans and create common guidelines to provide education and training to professionals caring for people with dementia and their family caregivers. The inconsistencies and gaps in dementia education have been repeatedly highlighted internationally as well as in the United Kingdom (UK); this is despite the four home nations having voluntary frameworks and guidelines for dementia education. This perspectives article on dementia education is written by representatives of the Higher Education Dementia Network (HEDN), a well-established group of academics involved in dementia education and research in over 65 Higher Education Institutions across the UK. HEDN works collaboratively with Dementia UK to promote consistent, high quality dementia education and share best practice. At HEDN we believe that reference to the knowledge and skills frameworks of the four nations within Professional Regulatory Body (PRB) requirements would ensure a more rigorous and consistent approach to dementia education across the UK. Reference to the Frameworks would support their adoption as a required and monitored sector minimum standard across professional boundaries. HEDN therefore recommends that application of the knowledge and skills within these frameworks becomes a requirement for (re)validation/approval of relevant health, social and housing professional programmes. In this article we explain the rationale behind the recommendations made by HEDN and the implications for PRBs and Higher Education Institutions

Dementia education in Higher Education Institutions, now and in the future: the role of the professional regulatory bodies in the UK

Dementia is a global challenge and educating and upskilling the workforce is a policy imperative. A World Health Organisation priority area is the development of dementia knowledge and skills amongst health and social care professionals. The European Parliament has called for European countries to develop action plans and create common guidelines to provide education and training to professionals caring for people with dementia and their family caregivers. The inconsistencies and gaps in dementia education have been repeatedly highlighted internationally as well as in the United Kingdom (UK); this is despite the four home nations having voluntary frameworks and guidelines for dementia education. This perspectives article on dementia education is written by representatives of the Higher Education Dementia Network (HEDN), a well-established group of academics involved in dementia education and research in over 65 Higher Education Institutions across the UK. HEDN works collaboratively with Dementia UK to promote consistent, high quality dementia education and share best practice. At HEDN we believe that reference to the knowledge and skills frameworks of the four nations within Professional Regulatory Body (PRB) requirements would ensure a more rigorous and consistent approach to dementia education across the UK. Reference to the Frameworks would support their adoption as a required and monitored sector minimum standard across professional boundaries. HEDN therefore recommends that application of the knowledge and skills within these frameworks becomes a requirement for (re)validation/approval of relevant health, social and housing professional programmes. In this article we explain the rationale behind the recommendations made by HEDN and the implications for PRBs and Higher Education Institutions

Data Generated during the 2018 LAPSE-RATE Campaign: An Introduction and Overview

Unmanned aircraft systems (UASs) offer innovative capabilities for providing new perspectives on the atmosphere, and therefore atmospheric scientists are rapidly expanding their use, particularly for studying the planetary boundary layer. In support of this expansion, from 14 to 20 July 2018 the International Society for Atmospheric Research using Remotely piloted Aircraft (ISARRA) hosted a community flight week, dubbed the Lower Atmospheric Profiling Studies at Elevation – a Remotely-piloted Aircraft Team Experiment (LAPSE-RATE; de Boer et al., 2020a). This field campaign spanned a 1-week deployment to Colorado\u27s San Luis Valley, involving over 100 students, scientists, engineers, pilots, and outreach coordinators. These groups conducted intensive field operations using unmanned aircraft and ground-based assets to develop comprehensive datasets spanning a variety of scientific objectives, including a total of nearly 1300 research flights totaling over 250 flight hours. This article introduces this campaign and lays the groundwork for a special issue on the LAPSE-RATE project. The remainder of the special issue provides detailed overviews of the datasets collected and the platforms used to collect them. All of the datasets covered by this special issue have been uploaded to a LAPSE-RATE community set up at the Zenodo data archive (https://zenodo.org/communities/lapse-rate/, last access: 3 December 2020)

Intercomparison of Small Unmanned Aircraft System (sUAS) Measurements for Atmospheric Science During the LAPSE-RATE Campaign

Small unmanned aircraft systems (sUAS) are rapidly transforming atmospheric research. With the advancement of the development and application of these systems, improving knowledge of best practices for accurate measurement is critical for achieving scientific goals. We present results from an intercomparison of atmospheric measurement data from the Lower Atmospheric Process Studies at Elevation—a Remotely piloted Aircraft Team Experiment (LAPSE-RATE) field campaign. We evaluate a total of 38 individual sUAS with 23 unique sensor and platform configurations using a meteorological tower for reference measurements. We assess precision, bias, and time response of sUAS measurements of temperature, humidity, pressure, wind speed, and wind direction. Most sUAS measurements show broad agreement with the reference, particularly temperature and wind speed, with mean value differences of 1.6 ± 2.6 °C and 0.22 ± 0.59 m/s for all sUAS, respectively. sUAS platform and sensor configurations were found to contribute significantly to measurement accuracy. Sensor configurations, which included proper aspiration and radiation shielding of sensors, were found to provide the most accurate thermodynamic measurements (temperature and relative humidity), whereas sonic anemometers on multirotor platforms provided the most accurate wind measurements (horizontal speed and direction). We contribute both a characterization and assessment of sUAS for measuring atmospheric parameters, and identify important challenges and opportunities for improving scientific measurements with sUAS

Effects of antiplatelet therapy on stroke risk by brain imaging features of intracerebral haemorrhage and cerebral small vessel diseases: subgroup analyses of the RESTART randomised, open-label trial

Background Findings from the RESTART trial suggest that starting antiplatelet therapy might reduce the risk of recurrent symptomatic intracerebral haemorrhage compared with avoiding antiplatelet therapy. Brain imaging features of intracerebral haemorrhage and cerebral small vessel diseases (such as cerebral microbleeds) are associated with greater risks of recurrent intracerebral haemorrhage. We did subgroup analyses of the RESTART trial to explore whether these brain imaging features modify the effects of antiplatelet therapy

Global patient outcomes after elective surgery: prospective cohort study in 27 low-, middle- and high-income countries.

BACKGROUND: As global initiatives increase patient access to surgical treatments, there remains a need to understand the adverse effects of surgery and define appropriate levels of perioperative care. METHODS: We designed a prospective international 7-day cohort study of outcomes following elective adult inpatient surgery in 27 countries. The primary outcome was in-hospital complications. Secondary outcomes were death following a complication (failure to rescue) and death in hospital. Process measures were admission to critical care immediately after surgery or to treat a complication and duration of hospital stay. A single definition of critical care was used for all countries. RESULTS: A total of 474 hospitals in 19 high-, 7 middle- and 1 low-income country were included in the primary analysis. Data included 44 814 patients with a median hospital stay of 4 (range 2-7) days. A total of 7508 patients (16.8%) developed one or more postoperative complication and 207 died (0.5%). The overall mortality among patients who developed complications was 2.8%. Mortality following complications ranged from 2.4% for pulmonary embolism to 43.9% for cardiac arrest. A total of 4360 (9.7%) patients were admitted to a critical care unit as routine immediately after surgery, of whom 2198 (50.4%) developed a complication, with 105 (2.4%) deaths. A total of 1233 patients (16.4%) were admitted to a critical care unit to treat complications, with 119 (9.7%) deaths. Despite lower baseline risk, outcomes were similar in low- and middle-income compared with high-income countries. CONCLUSIONS: Poor patient outcomes are common after inpatient surgery. Global initiatives to increase access to surgical treatments should also address the need for safe perioperative care. STUDY REGISTRATION: ISRCTN5181700

Evaluating the Effects of SARS-CoV-2 Spike Mutation D614G on Transmissibility and Pathogenicity.

Global dispersal and increasing frequency of the SARS-CoV-2 spike protein variant D614G are suggestive of a selective advantage but may also be due to a random founder effect. We investigate the hypothesis for positive selection of spike D614G in the United Kingdom using more than 25,000 whole genome SARS-CoV-2 sequences. Despite the availability of a large dataset, well represented by both spike 614 variants, not all approaches showed a conclusive signal of positive selection. Population genetic analysis indicates that 614G increases in frequency relative to 614D in a manner consistent with a selective advantage. We do not find any indication that patients infected with the spike 614G variant have higher COVID-19 mortality or clinical severity, but 614G is associated with higher viral load and younger age of patients. Significant differences in growth and size of 614G phylogenetic clusters indicate a need for continued study of this variant