157 research outputs found
Exploring the effects of urbanisation on Eastern Yellow Robins
Urbanisation is one of the greatest contemporary challenges for biodiversity conservation. Using a cross-disciplinary approach incorporating field surveys, spatial modelling and genetic techniques, this study showed that urbanisation has negatively impacted a small woodland bird species. Protection of river corridors and tree cover is critical for its persistence
HMS Mars : family history, care experienced history and imperial history
The paper focuses on the history of the industrial training ship Mars as a case study of an institution and also how practitioners, Care Experienced people and historians can work together
âThatâs what makes me betterâ: Investigating children and adolescentsâ experiences of pain communication with healthcare professionals in paediatric rheumatology
BackgroundPain communication should be an integral part of clinical consultations, particularly in paediatric rheumatology where children and adolescents frequently present with chronic musculoskeletal pain. To date, literature exploring the nature of and extent to which pain communication occurs has focused on healthcare professionals as respondents, yielding inconsistent and incomplete findings. The aim of this study was to explore children and adolescentsâ experiences of pain communication in the context of paediatric rheumatology consultations. MethodsData were collected using semi-structured telephone interviews with children and adolescents recruited from three tertiary paediatric rheumatology centres in the UK. A framework analysis approach was used to explore the similarities and divergences in participant accounts. ResultsTwenty-six children and adolescents (aged 6-18 years, median=14, 58% female) participated. Diagnoses included: Juvenile Idiopathic Arthritis, Chronic Idiopathic Pain Syndromes, Ehlers Danlos Syndrome/Hypermobility. Four themes were identified: 1) Co-ordination of pain communication; 2) Barriers to pain communication; 3) Facilitators of pain communication; 4) Dissatisfaction with pain communication. These themes particularly encompassed the process of communication, disclosure of effective and ineffective approaches and the impact of communication. Participants expected questions about pain, felt cared about and found talking about pain natural. Challenges included augmenting the feeling of being different to peers and concerns about management plans changing as a result of pain conversations. ConclusionsChildren and adolescents recalled a range of effective and ineffective pain communication approaches. Our study informs recommendations which highlight how paediatric healthcare professionals can improve their communication about pain with children and adolescents in the future. <br/
Diversity converges during community assembly in methanogenic granules, suggesting a biofilm life-cycle
Anaerobic biological decomposition of organic matter is ubiquitous in Nature wherever anaerobic environments prevail, and is catalysed by hydrolytic, fermentative, acetogenic, methanogenic, and various other groups, including syntrophic bacteria. It is also harnessed in innovative ways in engineered systems that may rely on small (0.1-4.0 mm), spherical, anaerobic granules, which we have found to be highly-replicated, whole-ecosystems harbouring the entire community necessary to mineralise complex organics. We hypothesised distinct granule sizes correspond to stages in a biofilm life-cycle, in which small granules are âyoungâ and larger ones are âoldâ. Here, granules were separated into 10 size fractions used for physico-chemical and ecological characterisation. Gradients of volatile solids, density, settleability, biofilm morphology, methanogenic activity, and EPS profiles were observed across size fractions. Sequencing of 16S rRNA genes indicated linear convergence of diversity during community assembly as granules increased in size. A total of 155 discriminant OTUs were identified, and correlated strongly with physico-chemical parameters. Community assembly across sizes was influenced by a niche effect, whereby Euryarchaeota dominated a core microbiome presumably as granules became more anaerobic. The findings indicate opportunities for precision management of environmental biotechnologies, and the potential of aggregates as playgrounds to study assembly and succession in whole microbiomes
A randomised clinical trial of a comprehensive exercise program for chronic whiplash: trial protocol
Background: Whiplash is the most common injury following a motor vehicle accident. Approximately 60% of people suffer persistent pain and disability six months post injury. Two forms of exercise; specific motor relearning exercises and graded activity, have been found to be effective treatments for this condition. Although the effect sizes for these exercise programs, individually, are modest, pilot data suggest much larger effects on pain and disability are achieved when these two treatments are combined. The aim of this study is to investigate the effectiveness and cost-effectiveness of this comprehensive exercise approach for chronic whiplash
Growth and break-up of methanogenic granules suggests mechanisms for biofilm and community development
Methanogenic sludge granules are densely packed, small, spherical biofilms found
in anaerobic digesters used to treat industrial wastewaters, where they underpin
efficient organic waste conversion and biogas production. Each granule theoretically
houses representative microorganisms from all of the trophic groups implicated in
the successive and interdependent reactions of the anaerobic digestion (AD) process.
Information on exactly how methanogenic granules develop, and their eventual fate will
be important for precision management of environmental biotechnologies. Granules
from a full-scale bioreactor were size-separated into small (0.6â1 mm), medium (1â
1.4 mm), and large (1.4â1.8 mm) size fractions. Twelve laboratory-scale bioreactors
were operated using either small, medium, or large granules, or unfractionated sludge.
After >50 days of operation, the granule size distribution in each of the small, medium,
and large bioreactor sets had diversified beyondâto both bigger and smaller thanâthe
size fraction used for inoculation. Interestingly, extra-small (XS; <0.6 mm) granules were
observed, and retained in all of the bioreactors, suggesting the continuous nature of
granulation, and/or the breakage of larger granules into XS bits. Moreover, evidence
suggested that even granules with small diameters could break. âNewâ granules
from each emerging size were analyzed by studying community structure based on
high-throughput 16S rRNA gene sequencing. Methanobacterium, Aminobacterium,
Propionibacteriaceae, and Desulfovibrio represented the majority of the community in
new granules. H2-using, and not acetoclastic, methanogens appeared more important,
and were associated with abundant syntrophic bacteria. Multivariate integration (MINT)
analyses identified distinct discriminant taxa responsible for shaping the microbial
communities in different-sized granules
Diversity converges during community assembly in methanogenic granules, suggesting a biofilm life-cycle
Anaerobic biological decomposition of organic matter is ubiquitous in Nature wherever anaerobic environments prevail, and is catalysed by hydrolytic, fermentative, acetogenic, methanogenic, and various other groups, including syntrophic bacteria. It is also harnessed in innovative ways in engineered systems that may rely on small (0.1-4.0 mm), spherical, anaerobic granules, which we have found to be highly-replicated, whole-ecosystems harbouring the entire community necessary to mineralise complex organics. We hypothesised distinct granule sizes correspond to stages in a biofilm life-cycle, in which small granules are âyoungâ and larger ones are âoldâ. Here, granules were separated into 10 size fractions used for physico-chemical and ecological characterisation. Gradients of volatile solids, density, settleability, biofilm morphology, methanogenic activity, and EPS profiles were observed across size fractions. Sequencing of 16S rRNA genes indicated linear convergence of diversity during community assembly as granules increased in size. A total of 155 discriminant OTUs were identified, and correlated strongly with physico-chemical parameters. Community assembly across sizes was influenced by a niche effect, whereby Euryarchaeota dominated a core microbiome presumably as granules became more anaerobic. The findings indicate opportunities for precision management of environmental biotechnologies, and the potential of aggregates as playgrounds to study assembly and succession in whole microbiomes
Understanding what matters to patients in critical care: an exploratory evaluation
Background:
The delivery of personâcentred care is a key priority for managers, policy makers, and clinicians in health care. The delivery personâcentred care in critical care is challenging because of competing demands.
Aims and objectives:
The aim of this quality improvement project was to understand what mattered to patients on a daily basis within the critical care environment. It aimed to understand personal goals and what patients needed to improve their experience. This paper reports on the outputs from this quality improvement project.
Design and Data Analysis:
During each daily ward round, patients were asked âwhat matters to you today?â Outputs from this were entered into the Daily Goals Sheet, which is utilized for every patient in our critical care unit or in the nursing notes. Using Framework Analysis, prevalent themes were extracted from the patient statements documented.
Results:
A total of 196 unique patients were included in this analysis alongside 592 patient statements. Four broad themes were generated: medical outcomes and information, the critical care environment, personal care, and family and caregivers.
Conclusion:
The analysis of the data from this quality improvement project has demonstrated that, by asking a simple question within the context of a ward round, care can be enhanced and personalized and longâterm outcomes potentially improved. More research is required to understand what the optimal methods are of implementing these requests.
Relevance to clinical practice:
Two main recommendations from practice emerged from this quality improvement project: asking patients âwhat matters to you?â on a daily basis may help support the humanization of the critical care environment, and visiting and access by families must be discussed with patients to ensure this is appropriate for their needs
Analysis of Genetic Variation in the Bovine SLC11A1 Gene, Its Influence on the Expression of NRAMP1 and Potential Association With Resistance to Bovine Tuberculosis
Bovine tuberculosis (bTB), caused by Mycobacterium bovis, is a chronic zoonotic disease where host genetics is thought to contribute to susceptibility or resistance. One of the genes implicated is the SLC11A1 gene, that encodes for the natural resistance-associated macrophage protein 1 (NRAMP1). The aim of this study was to identify SLC11A1 polymorphisms and to investigate any resulting functional differences in NRAMP1 expression that might be correlated with resistance/susceptibility to M. bovis infection. Sequencing of the SLC11A1 gene in cDNA isolated from Brown Swiss, Holstein Friesian, and Sahiwal cattle identified five single nucleotide polymorphisms (SNPs) in the coding region, but only one of these (SNP4, c.1066C>G, rs109453173) was present in all three cattle breeds and therefore warranted further investigation. Additionally, variations of 10, 11, and 12 GT repeats were identified in a microsatellite (MS1) in the SLC11A1 3âČUTR. Measurement of NRAMP1 expression in bovine macrophages by ELISA showed no differences between cells generated from the different breeds. Furthermore, variations in the length of the MS1 microsatellite did not impact on NRAMP1 protein expression as analyzed by luciferase reporter assay. However, further analysis of the ELISA data identified that the presence of the alternative G allele at SNP4 was associated with increased expression of NRAMP1 in bovine macrophages. Since NRAMP1 has been shown to influence the survival of intracellular pathogens such as M. bovis through the sequestering of iron, it is possible that cattle expressing the alternative G allele might have an increased resistance to bTB through increased NRAMP1 expression in their macrophages
De novo growth of methanogenic granules indicates a biofilm life-cycle with complex ecology
Methanogenic sludge granules are densely packed, small (diameter, approx. 0.5-2.0 mm) spherical biofilms found in anaerobic digesters used to treat industrial wastewaters, where they underpin efficient organic waste conversion and biogas production. A single digester contains millions of individual granules, each of which is a highly-organised biofilm comprised of a complex consortium of likely billions of cells from across thousands of species â but not all granules are identical. Whilst each granule theoretically houses representative microorganisms from all of the trophic groups implicated in the successive and interdependent reactions of the anaerobic digestion process, parallel granules function side-by-side in digesters to provide a âmeta-organismâ of sorts. Granules from a full-scale bioreactor were size-separated into small, medium and large granules. Laboratory-scale bioreactors were operated using only small (0.6â1 mm), medium (1â1.4 mm) or large (1.4â1.8 mm) granules, or unfractionated (naturally distributed) sludge. After >50 days of operation, the granule size distribution in each of the small, medium and large bioreactor types had diversified beyond â to both bigger and smaller than â the size fraction used for inoculation. âNewâ granules were analysed by studying community structure based on high-throughput 16S rRNA gene sequencing. Methanobacterium, Aminobacterium, Propionibacteriaceae and Desulfovibrio represented the majority of the community in new granules. H2-using, and not acetoclastic, methanogens appeared more important, and were associated with abundant syntrophic bacteria. Multivariate integration analyses identified distinct discriminant taxa responsible for shaping the microbial communities in different-sized granules, and along with alpha diversity data, indicated a possible biofilm life cycle.
Importance: Methanogenic granules are spherical biofilms found in the built environment, where despite their importance for anaerobic digestion of wastewater in bioreactors, little is understood about the fate of granules across their entire life. Information on exactly how, and at what rates, methanogenic granules develop will be important for more precise and innovative management of environmental biotechnologies. Microbial aggregates also spark interest as subjects in which to study fundamental concepts from microbial ecology, including immigration and species sorting affecting the assembly of microbial communities. This experiment is the first, of which we are aware, to compartmentalise methanogenic granules into discrete, size-resolved fractions, which were then used to separately start up bioreactors to investigate the granule life cycle. The evidence, and extent, of de novo granule growth, and the identification of key microorganisms shaping new granules at different life-cycle stages, is important for environmental engineering and microbial ecology
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