210 research outputs found
Indoor Characterisation of a Photovoltaic/ Thermal Phase Change Material System
Photovoltaic/ thermal (PV/T) systems integrate photovoltaic and solar thermal technologies and have the added advantage of producing both electrical and thermal energy simultaneously. This study has been carried out to investigate the performance of a PV/T phase change material (PCM) system under experimental climatic conditions. Electricity is generated by the PV during daylight hours and the heat produced is absorbed and stored in PCM. Water flows through a pipe network within the PCM and absorbs the stored heat in the PCM. In the PV/T-PCM system, water remained at a higher temperature for an extended period of time as well as shifting the time period of available heat when compared to the reference systems
Applying a SNP-based tool for conservation of wild and managed black bees in Ireland
Apis mellifera mellifera (Amm) is threatened over much of its natural range. However, in Ireland microsatellite and mitochondrial data have shown that a significant population of this subspecies exists in pure form and is spread over a large geographical region on the Island. Black bees have been managed and protected by beekeepers on the island, some of whom formed the Native Irish Honeybee Society (NIHBS)in 2012 and a breeding programme was initiated for Amm in 2014/2015.
The application of a SNP panel that detects hybridization between M and C lineages clearly supports other data showing that the majority of beekeepers included in the breeding programme indeed have bees with very low to no introgression from the C lineage. Furthermore, SNP data has also been applied to the first feral bee colonies located in Ireland subsequent to the introduction of Varroa. Here we will present on the use of molecular data as an aid to manage and conserve honeybees in Ireland, and to elucidate patterns in colour variation and honeybee subspecies purity in wild and managed bees with a view towards improving conservation approaches in the face of a potential hybridization threat.info:eu-repo/semantics/publishedVersio
A framework for different levels of integration of computational models into web-based virtual patients
BACKGROUND: Virtual patients are increasingly common tools used in health care education to foster learning of clinical reasoning skills. One potential way to expand their functionality is to augment virtual patients’ interactivity by enriching them with computational models of physiological and pathological processes. OBJECTIVE: The primary goal of this paper was to propose a conceptual framework for the integration of computational models within virtual patients, with particular focus on (1) characteristics to be addressed while preparing the integration, (2) the extent of the integration, (3) strategies to achieve integration, and (4) methods for evaluating the feasibility of integration. An additional goal was to pilot the first investigation of changing framework variables on altering perceptions of integration. METHODS: The framework was constructed using an iterative process informed by Soft System Methodology. The Virtual Physiological Human (VPH) initiative has been used as a source of new computational models. The technical challenges associated with development of virtual patients enhanced by computational models are discussed from the perspectives of a number of different stakeholders. Concrete design and evaluation steps are discussed in the context of an exemplar virtual patient employing the results of the VPH ARCH project, as well as improvements for future iterations. RESULTS: The proposed framework consists of four main elements. The first element is a list of feasibility features characterizing the integration process from three perspectives: the computational modelling researcher, the health care educationalist, and the virtual patient system developer. The second element included three integration levels: basic, where a single set of simulation outcomes is generated for specific nodes in the activity graph; intermediate, involving pre-generation of simulation datasets over a range of input parameters; advanced, including dynamic solution of the model. The third element is the description of four integration strategies, and the last element consisted of evaluation profiles specifying the relevant feasibility features and acceptance thresholds for specific purposes. The group of experts who evaluated the virtual patient exemplar found higher integration more interesting, but at the same time they were more concerned with the validity of the result. The observed differences were not statistically significant. CONCLUSIONS: This paper outlines a framework for the integration of computational models into virtual patients. The opportunities and challenges of model exploitation are discussed from a number of user perspectives, considering different levels of model integration. The long-term aim for future research is to isolate the most crucial factors in the framework and to determine their influence on the integration outcome
Conservation of European M-lineage honey bees using abdominal colour as an indicator of subspecies purity has pitfalls
There are 31 honey bee (Apis mellifera) recognized subspecies, which have been grouped into four main
lineages. Two of these lineages occur naturally in Europe: M in western and northern Europe and C in southeastern Europe. In Europe, M-lineage groups only two subspecies, Apis mellifera mellifera and Apis mellifera iberiensis, both being black in colour. C-Lineage groups have instead eight subspecies, including one of the beekeepers-favored and phenotypically distinct, the yellow Apis mellifera ligustica from Italy. M-lineage
honey bees’ distribution has been changing and in some countries, the native bee is being replaced or
hybridised with C-lineage subspecies. Honey bee abdominal pigmentation is one of the most recognisable
traits and it has been used by beekeepers as an indicator of subspecies identity. However, this approach may
negatively impact population diversity and is futile if there is no association between tergite colour patterns
and genetic background. To test this approach, we calculated the introgression level of A. m. mellifera (N=162)
and A. m. iberiensis individuals (N=559) with different colour phenotypes and from a wide geographical range
using informative SNPs. In this study, many A. m. mellifera samples showed high levels of C-lineage
introgression. The individuals collected in Iberia were revealed to be pure. Introgressed A. m. iberiensis
individuals were all from the Azores, where a high frequency of C-lineage mitotypes exists in several islands.
Our results showed that for both subspecies, it is not possible to directly identify introgressed individuals from
observed colour patterns, as we found black honey bees with a considerable amount of introgression and honey bees with yellow banding that were pure or marginally introgressed. With this study, we hope to increase
awareness among stakeholders of the need to use other tools to select honey bees for conservation and breeding purposes.This work was financed by the Native Irish Honeybee Society (NIHBS), Federation of Irish Beekeeping Associations (FIBKA) and FEDER (Fundo Europeu de Desenvolvimento Regional) through the program COMPETE 2020–POCI (Programa Operacional para a Competividade e Internacionalização) and by the Portuguese funds through FCT (Fundação para a Ciência e a Tecnologia) in the framework of the project BeeHappy (POCI-01-0145-FEDER-029871). FCT provided financial support by national funds (FCT/MCTES) to CIMO (UIDB/00690/2020). Dora Henriques is funded by BeeHappy and MEDIBEES which is part of the PRIMA programme supported by the European Union.info:eu-repo/semantics/publishedVersio
Can introgression in M-lineage honey bees be detected by abdominal colour patterns?
Honey bee abdominal pigmentation is one of the most recognisable traits and it is often used by
beekeepers as an indicator of M-lineage subspecies purity. However, this approach may negatively impact
population diversity and is futile if there is no association between tergite colour patterns and the genetic
background. To assess whether this trait can be used as a proxy for introgression proportions in M-lineage
subspecies, we genotyped, with highly informative SNP assays, A. m. mellifera and A. m. iberiensis individuals
displaying four different colour phenotypes. The SNP data detected highly introgressed bees exhibiting a black
phenotype and, at the same time, pure or marginally introgressed bees with yellow banding patterns, in both
subspecies. Despite these observations, contrary to A. m. iberiensis , in A. m. mellifera , introgression proportions
revealed to be a significant predictor of abdominal pigmentation. Therefore, abdominal pigmentation could be used
by A. m. mellifera conservationists to guide colony selection when genetic tools are unavailable.KAB was funded by Dr. Tony Ryan research
scholarship and an Irish Research Council scholarship.
This work was financed by the Native Irish
Honeybee Society (NIHBS), Federation of Irish
Beekeeping Associations (FIBKA) and FEDER
(Fundo Europeu de Desenvolvimento Regional)
through the program COMPETE 2020–POCI
(Programa Operacional para a Competividade e
Internacionalização) and by the Portuguese funds
through FCT (Fundação para a Ciência e a
Tecnologia) in the framework of the project
BeeHappy (POCI-01-0145-FEDER-029871).info:eu-repo/semantics/publishedVersio
Endobronchial Carcinoid Tumour with Extensive Ossification: An Unusual Case Presentation
Carcinoid tumour is a well-known primary endobronchial lung neoplasm. Although calcifications may be seen in up to 30% of pulmonary carcinoid tumours, near complete ossification of these tumours is an unusual finding. Such lesions can prove diagnostically challenging at the time of intraoperative frozen section as the latter technique requires thin sectioning of the lesion for microscopic assessment. We present an unusual case of endobronchial carcinoid tumour with extensive ossification in a 45-year-old male. Preliminary intraoperative diagnosis was achieved through the alternative use of cytology scrape smears. The final diagnosis was confirmed after decalcification of the tumour. The prognostic implications of heavily ossified carcinoid tumours remain elusive. Long-term clinical follow-up of these patients is recommended
A novel SNP-based tool for estimating C-lineage introgression in the dark honey bee (Apis mellifera mellifera)
The natural distribution ofthe honeybee (Apis mellifera L.) hás been changed by humans in recent
decades to such an extent that the formerly widest-spread European subspecies, Apís mellifera
mellifera, is threatened by extinction through introgression from highly divergent commercial strains
in large tracts of its range. Conservation efforts for A. m. mellifera are underway in multiple
European countries requiring reliable and cost-efficient molecular tools to identify purebred colonies.
Here, we developed four ancestry-informative SNP assays for high sample throughput genotyping
using the iPLEX Mass Array system. Our customized assays were tested on DNA from individual and
pooled, haploid and diploid honeybee samples extracted from different tissues using a diverse range
of protocols.
The assays had a high genotyping success rate and yielded accurate genotypes. Performance
assessed against whole-genome data showed that individual assays behaved well, although the most
accurate introgression estimates were obtained forthe fourassays combined (117 SNPs). The best
compromise between accuracy ana genotyping costs was achieved when combining two assays (62
SNPs). We provide a ready-to-use cost-effective tool for accurate molecular identification and
estimation of introgression leveis to more effectively monitor and manage A. m. mellífera
conservatories.info:eu-repo/semantics/publishedVersio
Investigation of free-living honey bee colonies in Ireland
Apis mellifera mellifera (Linnaeus), the Western European honey bee, is considered extinct in the wild over most of its range due largely to hybridisation and replacement by other subspecies, parasitism by Varroa destructor, habitat loss, and effects from agricultural pesticides. The purity of the subspecies within the managed cohort is also at risk over much of its range. Here, we investigated if honey bee colonies inhabited locations outside of the apiaries. In those we located, we explored how long the colony persisted and we investigated the genotypes of the bees using multiple markers. We show here that unmanaged free-living honey bee colonies are present and widespread in Ireland, inhabiting a mixture of nesting habitats with some colonies persisting naturally and unaided over multiple years. Molecular data including mitochondrial, microsatellite, and SNPs evidence indicate that the free-living population sampled is largely comprised of pure A. m. mellifera. Finally, we discuss the implications of conserving free-living A. m. mellifera in Ireland and its possible role in improving the fitness of the managed population both in Ireland and the rest of its European range.We particularly thank the custodians of the free-living honey
bee colonies and the Native Irish Honey Bee Society (NIHBS)
for their assistance. KAB is a recipient of an Irish Research
Council postgraduate fellowship (GOIPG/2015/2767) and a
Tony Ryan Postgraduate fellowship. Additional funding was
gratefully received from the Department of Agriculture, Food
and the Marine [grant number GRGAS 16/GR/09], the
Federation of Irish Beekeeping Associations, the Eva Crane
Trust [grant number ECTA20160303] and The Native Irish
Honey Bee Society. Financial support for DH was provided
through the program COMPETE 2020 – POCI (Programa
Operacional para a Competividade e Internacionalizac¸~ao) and
by Portuguese funds through FCT (Fundac¸~ao para a Ci^encia e
a Tecnologia) in the framework of the project BeeHappy
(POCI-01-0145-FEDER-029871).info:eu-repo/semantics/publishedVersio
Supporting families and carers of people living with multiple sclerosis: A rapid realist review and realist evaluation
Gillian Baer - ORCID: 0000-0002-1528-2851
https://orcid.org/0000-0002-1528-2851Christina Buckton - ORCID: 0000-0002-6004-4334
https://orcid.org/0000-0002-6004-4334Brendan McCormack - ORCID: 0000-0001-8525-8905
https://orcid.org/0000-0001-8525-8905Submitted manuscript added 2021-07-20.Supportive interventions are needed for family and carers of people with MS. A Rapid Realist Review and Realist Evaluation explored what helps, who it helps, when and how. Literature analysis was synthesised with thematic analysis of qualitative interviews and focus groups with 49 family and carers of people with MS. The resulting model summarised a family of interventions that could help people develop their capabilities and expand their resources, for more positive outcomes. This may prevent or delay a ‘tipping point’ where capacity to care is overwhelmed by caring roles.https://doi.org/10.1332/239788220X160209386931015pubpub
The Role of Computational Fluid Dynamics in the Management of Unruptured Intracranial Aneurysms: A Clinicians' View
Objective. The
importance of hemodynamics in the
etiopathogenesis of intracranial aneurysms (IAs)
is widely accepted. Computational fluid dynamics
(CFD) is being used increasingly for hemodynamic
predictions. However, alogn with the continuing
development and validation of these
tools, it is imperative to collect
the opinion of the clinicians.
Methods. A workshop on CFD was
conducted during the European Society of
Minimally Invasive Neurological Therapy (ESMINT)
Teaching Course, Lisbon, Portugal.
36 delegates, mostly clinicians,
performed supervised CFD analysis for an IA, using the
@neuFuse software developed within the European
project @neurIST. Feedback on the workshop was
collected and analyzed. The
performance was assessed on a scale of 1 to 4
and, compared with experts' performance.
Results. Current dilemmas in
the management of unruptured IAs remained the
most important motivating factor to attend the
workshop and majority of participants showed interest in participating in a
multicentric trial. The participants achieved
an average score of 2.52 (range 0–4) which was 63% (range 0–100%) of an expert user. Conclusions.
Although participants showed a manifest interest
in CFD, there was a clear
lack of awareness concerning the role of
hemodynamics in the etiopathogenesis of IAs and
the use of CFD in this context. More efforts
therefore are required to enhance understanding of the
clinicians in the subject
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