240 research outputs found

    Distress and Worry as Mediators in the Relationship between Psychosocial Risks and Upper Body Musculosketal Complaints in Highly Automated Manufacturing

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    As a result of an upward trend in automation, the requirement for supervisory monitoring and consequently, cognitive demand has increased in automated manufacturing. The incidence of musculoskeletal disorders has also increased in the manufacturing sector. A model was developed based on survey data to test if distress and worry mediate the relationship between psychosocial factors (job control, cognitive demand, social isolation and skill discretion), stress states and upper body musculoskeletal complaints in highly automated manufacturing companies (n=235). Cognitive demand was shown to be related to higher distress in employees. The data raise the question about the link between job control and stress and MSD complaints in highly automated work settings

    Reflections on research at the ASE Conference, Reading 2015

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    HPLC and capillary electrophoresis for determination of acids, terpenes and aldehydes in natural rosins

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    Rosins are natural compounds derived from pine tree resin. They have many uses in industry, including paints, adhesives and soldering fluxes. In this work HPLC and CE was used to characterise rosin samples which are composed of 90% acidic compounds and 10% neutral compounds including aldehydes and terpenes. Cyclodextrin-modified CE methods were developed for the separation of acids, terpenes and aldehyde groups. The presence and concentration of acids in several rosin samples was investigated

    Neuronal activation for semantically reversible sentences

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    Semantically reversible sentences are prone to misinterpretation and take longer for typically developing children and adults to comprehend; they are also particularly problematic for those with language difficulties such as aphasia or Specific Language Impairment. In our study, we used fMRI to compare the processing of semantically reversible and nonreversible sentences in 41 healthy participants to identify how semantic reversibility influences neuronal activation. By including several linguistic and nonlinguistic conditions within our paradigm, we were also able to test whether the processing of semantically reversible sentences places additional load on sentence-specific processing, such as syntactic processing and syntactic-semantic integration, or on phonological working memory. Our results identified increased activation for reversible sentences in a region on the left temporal–parietal boundary, which was also activated when the same group of participants carried out an articulation task which involved saying “one, three” repeatedly. We conclude that the processing of semantically reversible sentences places additional demands on the subarticulation component of phonological working memory

    An investigation into the sample preparation procedure and analysis of cyanoacrylate adhesives using capillary electrophoresis

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    In this study, the trace acid profile of cyanoacrylate adhesives was studied using capillary electrophoresis. Liquid–liquid extraction was employed as the sample preparation step before separation by capillary electrophoresis. The solubility of the adhesives was investigated using various organic solvents, e.g. hexane and dichloromethane, and chloroform was determined to be the optimum solvent as it enabled the full dissolution of the adhesive. A comprehensive stability study was performed over a 3-year period and results indicate that the adhesives were stable for 2 years after which their stability and performance degraded

    Determination of the composition of natural rosins using cyclodextrin-modified capillary electrophoresis

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    Natural rosins are derived from pine tree resin. Their composition is complex and varied depending on the geographical source of the rosin and the part of the tree it is sourced from. They are used widely in industry in paints and varnishes, drug coating and as flux in soldering. Random crystallization of rosins in finished products results in problems e.g. in circuit boards, and the cause is still unclear. Rosins are composed of 90% acidic compounds and 10% neutrals. The acidic compounds are primarily abietic acid, neoabietic acid, dehydroabietic acid palustric acid and pimaric acid. The neutral compounds compose mainly of aldehydes and terpenes. The acidic composition of rosins has been reported on widely since the early 90’s through the analysis of their methyl esters by GC-MS. However, the neutral compounds of rosins have not been thoroughly investigated. In this project, rosin samples were analysed by Capillary Electrophoresis (CE) and High Performance Liquid Chromatography (HPLC). A CE method using cyclodextrin-modified buffers was developed and optimised in order to achieve the best separation of the three chemical groups of compounds present in this complex matrix. Having previously identified and quantified the acids present in the samples, this talk focuses on the identification of the neutral compounds present. Spiked samples and various simultaneous UV detection wavelengths were used to determine the identity of compound peaks. Possible links between the differences in composition of rosin samples, and their uses in industry were also addressed

    Learnings From a National Cyberattack Digital Disaster During the SARS-CoV-2 Pandemic in a Pediatric Emergency Medicine Department

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    Objective: The primary objective was to analyze the impact of the national cyberattack in May 2021 on patient flow and data quality in the Paediatric Emergency Department (ED), amid the SARS-CoV-2 (COVID-19) pandemic. Methods: A single site retrospective time series analysis was conducted of three 6-week periods: before, during, and after the cyberattack outage. Initial emergent workflows are described. Analysis includes diagnoses, demographic context, key performance indicators, and the gradual return of information technology capability on ED performance. Data quality was compared using 10 data quality dimensions. Results: Patient visits totaled 13 390. During the system outage, patient experience times decreased significantly, from a median of 188 minutes (pre-cyberattack) down to 166 minutes, most notable for the period from registration to triage, and from clinician review to discharge (excluding admitted patients). Following system restoration, most timings increased. Data quality was significantly impacted, with data imperfections noted in 19.7% of data recorded during the system outage compared to 4.7% before and 5.1% after. Conclusions: There was a reduction in patient experience time, but data quality suffered greatly. A hospital’s major emergency plan should include provisions for digital disasters that address essential data requirements and quality as well as maintaining patient flow

    Natural hazards in Australia : floods

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    Floods are caused by a number of interacting factors, making it remarkably difficult to explain changes in flood hazard. This paper reviews the current understanding of historical trends and variability in flood hazard across Australia. Links between flood and rainfall trends cannot be made due to the influence of climate processes over a number of spatial and temporal scales as well as landscape changes that affect the catchment response. There are also still considerable uncertainties in future rainfall projections, particularly for sub-daily extreme rainfall events. This is in addition to the inherent uncertainty in hydrological modelling such as antecedent conditions and feedback mechanisms. Research questions are posed based on the current state of knowledge. These include a need for high-resolution climate modelling studies and efforts in compiling and analysing databases of sub-daily rainfall and flood records. Finally there is a need to develop modelling frameworks that can deal with the interaction between climate processes at different spatio-temporal scales, so that historical flood trends can be better explained and future flood behaviour understood

    Women's experiences and views of routine assessment for anxiety in pregnancy and after birth: A qualitative study

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    Background: Anxiety in pregnancy and postnatally is highly prevalent but under‐recognized. To identify perinatal anxiety, assessment tools must be acceptable to women who are pregnant or postnatal. Methods: A qualitative study of women's experiences of anxiety and mental health assessment during pregnancy and after birth and views on the acceptability of perinatal anxiety assessment. Semi‐structured interviews were conducted with 41 pregnant or postnatal women. Results were analysed using Sekhon et al.'s acceptability framework, as well as inductive coding of new or emergent themes. Results: Women's perceptions of routine assessment for perinatal anxiety were generally favourable. Most participants thought assessment was needed and that the benefits outweighed potential negative impacts, such as unnecessary referrals to specialist services. Six themes were identified of: (1) Raising awareness; (2) Improving support; (3) Surveillance and stigma; (4) Gatekeeping; (5) Personalized care and (6) Trust. Assessment was seen as a tool for raising awareness about mental health during the perinatal period and a mechanism for normalizing discussions about mental health more generally. However, views on questionnaire assessments themselves were mixed, with some participants feeling they could become an administrative ‘tick box’ exercise that depersonalizes care and does not provide a space to discuss mental health problems. Conclusion: Routine assessment of perinatal anxiety was generally viewed as positive and acceptable; however, this was qualified by the extent to which it was informed and personalized as a process. Approaches to assessment should ideally be flexible, tailored across the perinatal period and embedded in continuity of care

    The Interplay of SIRT1 and Wnt Signaling in Vascular Calcification

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    Vascular calcification is a major health risk and is highly correlated with atherosclerosis, diabetes, and chronic kidney disease. The development of vascular calcification is an active and complex process linked with a multitude of signaling pathways, which regulate promoters and inhibitors of osteogenesis, the balance of which become deregulated in disease conditions. SIRT1, a protein deacetylase, known to be protective in inhibiting oxidative stress and inflammation within the vessel wall, has been shown as a possible key player in modulating the cell-fate determining canonical Wnt signaling pathways. Suppression of SIRT1 has been reported in patients suffering with cardiovascular pathologies, suggesting that the sustained acetylation of osteogenic factors could contribute to their activation and in turn, lead to the progression of calcification. There is clear evidence of the synergy between β-Catenin and elevated Runx2, and with Wnt signaling being β-Catenin dependent, further understanding is needed as to how these molecular pathways converge and interact, in order to provide novel insight into the mechanism by which smooth muscle cells switch to an osteogenic differentiation programme. Therefore, this review will describe the current concepts of pathological soft tissue mineralization, with a focus on the contribution of SIRT1 as a regulator of Wnt signaling and its targets, discussing SIRT1 as a potential target for manipulation and therapy
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