Cost optimization of offshore wind farm combination with reversible solid oxide cell system producing hydrogen using the PyPSA power system modelling tool

In the context of reaching the net zero carbon target, the UK has set an ambitious target of having a green hydrogen production capacity of 5 GW by 2030. As part of the EPSRC-funded project on high efficiency reversible solid oxide cells (rSOC) for the integration of offshore renewable energy (ORE) using hydrogen, eight scenarios where hydrogen is combined with offshore renewable energy were identified. A model using the PyPSA power system modelling tool combined with a sensitivity study, investigated optimized rSOC system capacities, hydrogen storage capacities, and subsea cable connection capacities under various combinations of infrastructure cost, rSOC system efficiencies, and electricity prices for one of the scenarios. Preliminary results for a 600 MW wind farm situated 60 km from shore combined with offshore hydrogen production illustrate the impact of electricity price on decision-making in energy dispatch and on optimization of infrastructure of an ORE-rSOC system. Results indicate that high electricity price fluctuations call for large amounts of hydrogen production and storage capacity. Further refinement of input data would make this approach a promising decision-making tool for the use in the design of an ORE-rSOC system

Development of a Novel Bioactive Functionally Guided Tissue Graded Membrane for Periodontal Lesions

Periodontal disorders are chronic inflammatory condition of the supporting structures of the tooth. Guided tissue regeneration (GTR) membranes have been used in the management of destructive forms of periodontal disease as a means of aiding regeneration of lost supporting tissues, such as alveolar bone, cementum, gingiva and periodontal ligament. In this study, individual layers of a functionally graded bioactive composite membrane were fabricated using the techniques of solvent casting, freeze gelation and electrospinning by incorporating Hydroxyapatite (HA) alongside Chitosan and using acetic acid as the primary solvent. The techniques were simple, time /energy efficient and reproducible resulting in novel non porous and porous scaffolds with potential for use in periodontal tissue regeneration. Scaffolds were characterised in terms of ultra structure morphology by scanning electron microscopy, physiochemical properties, water uptake, and degradation by weight loss, mechanical properties and biocompatibility. Microscopy revealed porous features and presence of hydroxyapatite was confirmed with Fourier Transform Infrared (FTIR) spectroscopy. Morphology of the pores varied with different solvents, which were affected by addition of HA. Biocompatibility studies were carried out using a human osteosarcoma cell line and human embryonic stem cell-derived mesenchymal progenitor cells. All tested scaffolds showed increasing cell viability over the tested culture period. In conclusion, solvent casting, freeze gelation and electrospinning were successfully used to fabricate scaffolds with different morphology and porosity. Future work will focus on incorporation of drug into the core layer and combining the surface and core layers to form a spatially designed functionally graded biodegradable membrane with the potential of being used for periodontal tissue regeneration

Inherited crustal deformation along the East Gondwana margin revealed by seismic anisotropy tomography

Acknowledgments We thank Mallory Young for providing phase velocity measurements in mainland Australia and Tasmania. Robert Musgrave is thanked for making available his tilt-filtered magnetic intensity map. In the short term, data may be made available by contacting the authors (S.P. or N.R.). A new database of passive seismic data recorded in Australia is planned as part of a national geophysics data facility for easy access download. Details on the status of this database may be obtained from the authors (S.P., N.R., or A.M.R.). There are no restrictions on access for noncommercial use. Commercial users should seek written permission from the authors (S.P. or N.R.). Ross Cayley publishes with the permission of the Director of the Geological Survey of Victoria.Peer reviewedPublisher PD

The Problem Management Plus psychosocial intervention for distressed and functionally impaired asylum seekers and refugees: the PROSPER feasibility RCT

Background The prevalence of psychological morbidity among asylum seekers and refugees is high, but these groups encounter extensive barriers to accessing health and social care. The aim of the PROSPER study was to assess the feasibility of conducting a randomised controlled trial in the UK of Problem Management Plus (PM+), an evidence-based psychosocial intervention delivered by lay therapists for distressed and functionally impaired asylum seekers and refugees. Design We undertook a feasibility study of PM+, which included a pilot study of the design features of a future definitive randomised controlled trial and economic evaluation. The feasibility study involved the adaptation of PM+ based on evidence drawn from literature synthesis and local stakeholder engagement, and a two-stage training procedure for lay therapists. These were followed by a pilot trial designed to assess the feasibility of conducting a three-arm randomised controlled trial of five 90-minute sessions of PM+, delivered individually or in groups, with 105 participants randomised 1 : 1 : 1 to individual PM+, group PM+ or a control intervention. Primary health outcomes were anxiety and depressive symptoms at 3 months; other outcomes included post-traumatic stress disorder symptoms, quality of life, progress with identified goals and service use. Findings We demonstrated that the form and content of PM+ could be adapted to meet the needs of asylum seekers and refugees. Twelve people with lived experience of the asylum process were successfully trained as lay therapists to deliver this targeted, low-intensity psychosocial intervention in local asylum seeker and refugee communities. The pilot trial was affected by governance issues. It began in December 2019 and was cut short by the COVID-19 pandemic. We were not able to complete recruitment and follow-up as planned; 11 out of 105 (10%) participants were recruited to the pilot trial (individual PM+, n = 4; group PM+, n = 3; control, n = 4); 8 out of 11 participants were followed up at 13 weeks and 7 out of 11 participants were followed up at 26 weeks. (Preliminary data were gathered on recruitment and retention, intervention fidelity and acceptability of study measures, including service use measures.) Limitations Protracted delays due to governance issues, followed by the COVID-19 pandemic, meant that we were unable to complete the pilot trial or to provide evidence regarding the feasibility of group PM+. The complexities of working with multiple languages and cultural groups were noted. There were mixed views on how successful PM+ might prove, and we had insufficient evidence to provide clear conclusions. Future work Future research could explore how technology can be used to improve the acceptability, feasibility, efficacy and potential cost-effectiveness of scalable mental health interventions and well-being support for distressed asylum seekers and refugees. The use of mobile phone and/or app-based forms of support may help to increase asylum seekers’ and refugees’ willingness to engage in research of this type. Conclusions Although it was not possible to specify the parameters for a full randomised controlled trial of PM+ for asylum seekers and refugees in the UK, our findings offer guidance on strategies that may be of value in future studies of this nature. Trial registration This trial is registered as ISRCTN15214107. Funding This project was funded by the National Institute for Health and Care Research (NIHR) Public Health Research programme and will be published in full in Public Health Research; Vol. 10, No. 10. See the NIHR Journals Library website for further project information

Comparison of the pathogenesis of the highly passaged MCMV Smith strain with that of the low passaged MCMV HaNa1 isolate in BALB/c mice upon oronasal inoculation

Murine cytomegalovirus (MCMV) Smith strain is widely used in mouse models to study HCMV infections. Due to high serial passages, MCMV Smith has acquired genetic and biological changes. Therefore, a low passaged strain would be more relevant to develop mouse models. Here, the pathogenesis of an infection with MCMV Smith was compared with that of an infection with a low passaged Belgian MCMV isolate HaNa1 in BALB/c adult mice following oronasal inoculation with either a low (10(4) TCID50/mouse) or high (10(6) TCID50/mouse) inoculation dose. Both strains were mainly replicating in nasal mucosa and submandibular glands for one to two months. In nasal mucosa, MCMV was detected earlier and longer (1-49 days post inoculation (dpi)) and reached higher titers with the high inoculation dose compared to the low inoculation dose (14-35 dpi). In submandibular glands, a similar finding was observed (high dose: 7-49 dpi; low dose: 14-42 dpi). In lungs, both strains showed a restricted replication. In spleen, liver and kidneys, only the Smith strain established a productive infection. The infected cells were identified as olfactory neurons and sustentacular cells in olfactory epithelium, macrophages and dendritic cells in NALT, acinar cells in submandibular glands, and macrophages and epithelial cells in lungs for both strains. Antibody analysis demonstrated for both strains that IgG(2a) was the main detectable antibody subclass. Overall, our results show that significant phenotypic differences exist between the two strains. MCMV HaNa1 has been shown to be interesting for use in mouse models in order to get better insights for HCMV infections in immunocompetent humans

Tracking the international spread of SARS-CoV-2 lineages B.1.1.7 and B.1.351/501Y-V2

Publisher Copyright: © 2021 O'Toole Á et al.Late in 2020, two genetically-distinct clusters of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) with mutations of biological concern were reported, one in the United Kingdom and one in South Africa. Using a combination of data from routine surveillance, genomic sequencing and international travel we track the international dispersal of lineages B.1.1.7 and B.1.351 (variant 501Y-V2). We account for potential biases in genomic surveillance efforts by including passenger volumes from location of where the lineage was first reported, London and South Africa respectively. Using the software tool grinch (global report investigating novel coronavirus haplotypes), we track the international spread of lineages of concern with automated daily reports, Further, we have built a custom tracking website (cov-lineages.org/global_report.html) which hosts this daily report and will continue to include novel SARS-CoV-2 lineages of concern as they are detected.Peer reviewe

The supernatural characters and powers of sacred trees in the Holy Land

This article surveys the beliefs concerning the supernatural characteristics and powers of sacred trees in Israel; it is based on a field study as well as a survey of the literature and includes 118 interviews with Muslims and Druze. Both the Muslims and Druze in this study attribute supernatural dimensions to sacred trees which are directly related to ancient, deep-rooted pagan traditions. The Muslims attribute similar divine powers to sacred trees as they do to the graves of their saints; the graves and the trees are both considered to be the abode of the soul of a saint which is the source of their miraculous powers. Any violation of a sacred tree would be strictly punished while leaving the opportunity for atonement and forgiveness. The Druze, who believe in the transmigration of souls, have similar traditions concerning sacred trees but with a different religious background. In polytheistic religions the sacred grove/forest is a centre of the community's official worship; any violation of the trees is regarded as a threat to the well being of the community. Punishments may thus be collective. In the monotheistic world (including Christianity, Islam and Druze) the pagan worship of trees was converted into the worship/adoration of saints/prophets; it is not a part of the official religion but rather a personal act and the punishments are exerted only on the violating individual

Prognostic indicators and outcomes of hospitalised COVID-19 patients with neurological disease: An individual patient data meta-analysis

BACKGROUND: Neurological COVID-19 disease has been reported widely, but published studies often lack information on neurological outcomes and prognostic risk factors. We aimed to describe the spectrum of neurological disease in hospitalised COVID-19 patients; characterise clinical outcomes; and investigate factors associated with a poor outcome. METHODS: We conducted an individual patient data (IPD) meta-analysis of hospitalised patients with neurological COVID-19 disease, using standard case definitions. We invited authors of studies from the first pandemic wave, plus clinicians in the Global COVID-Neuro Network with unpublished data, to contribute. We analysed features associated with poor outcome (moderate to severe disability or death, 3 to 6 on the modified Rankin Scale) using multivariable models. RESULTS: We included 83 studies (31 unpublished) providing IPD for 1979 patients with COVID-19 and acute new-onset neurological disease. Encephalopathy (978 [49%] patients) and cerebrovascular events (506 [26%]) were the most common diagnoses. Respiratory and systemic symptoms preceded neurological features in 93% of patients; one third developed neurological disease after hospital admission. A poor outcome was more common in patients with cerebrovascular events (76% [95% CI 67-82]), than encephalopathy (54% [42-65]). Intensive care use was high (38% [35-41]) overall, and also greater in the cerebrovascular patients. In the cerebrovascular, but not encephalopathic patients, risk factors for poor outcome included breathlessness on admission and elevated D-dimer. Overall, 30-day mortality was 30% [27-32]. The hazard of death was comparatively lower for patients in the WHO European region. INTERPRETATION: Neurological COVID-19 disease poses a considerable burden in terms of disease outcomes and use of hospital resources from prolonged intensive care and inpatient admission; preliminary data suggest these may differ according to WHO regions and country income levels. The different risk factors for encephalopathy and stroke suggest different disease mechanisms which may be amenable to intervention, especially in those who develop neurological symptoms after hospital admission