Technology readiness level assessment of composites recycling technologies

Composite materials made of glass and carbon fibres have revolutionised many industries. Demand for composites is experiencing rapid growth and global demand is expected to double. As demand for composites grows it is clear that waste management will become an important issue for businesses. Technically composite materials evoke difficult recycling challenges due to the heterogeneity of their composition. As current waste management practices in composites are dominated by landfilling, governments and businesses themselves foresee that this will need to change in the future. The recycling of composites will play a vital role in the future especially for the aerospace, automotive, construction and marine sectors. These industries will require different recycling options for their products based on compliance with current legislation, the business model as well as cost effectiveness. In order to be able to evaluate waste management strategies for composites, a review of recycling technologies has been conducted based on technology readiness levels and waste management hierarchy. This paper analyses 56 research projects to identify growing trends in composite recycling technologies with pyrolysis, solvolysis and mechanical grinding as the most prominent technologies. These recycling technologies attained high scores on the waste management hierarchy (either recycling or reuse applications) suggesting potential development as future viable alternatives to composite landfilling. The research concluded that recycling as a waste management strategy is most popular exploration area. It was found mechanical grinding to be most mature for glass fibre applications while pyrolysis has been most mature in the context of carbon fibre. The paper also highlights the need to understand the use of reclaimed material as important assessment element of recycling efforts. This paper contributes to the widening and systematising knowledge on maturity and understanding composites recycling technologies

Socioeconomic Position and DNA Methylation Age Acceleration across the Lifecourse.

Accelerated DNA methylation age is linked to all-cause mortality and environmental factors, but studies of associations with socioeconomic position are limited. Studies generally use small selected samples, and it is unclear how findings with two commonly used methylation age calculations (Horvath and Hannum) translate to general population samples including younger and older adults. In 1099 UK adults aged 28-98 y in 2011-12, we assessed the relationship of Horvath and Hannum DNA methylation age acceleration with a range of social position measures: current income and employment, education, income and unemployment across a 12-year period, and childhood social class. Accounting for confounders, participants less advantaged in childhood were epigenetically 'older' as adults: compared to participants with professional/managerial parents, Hannum age was 1.07 years higher (95% confidence interval (CI):0.20-1.94) for those with parents in semi-skilled/unskilled occupations, and 1.85 years higher (95%CI:0.67-3.02) for participants without a working parent at age 14. No other robust associations were seen. Results accord with research implicating early life circumstances as critical for DNA methylation age in adulthood. Since methylation age acceleration as measured by the Horvath and Hannum estimators appears strongly linked to chronological age, research examining associations with the social environment must take steps to avoid age-related confounding

Impact of the introduction and withdrawal of financial incentives on the delivery of alcohol screening and brief advice in English primary health care : an interrupted time–series analysis

Aim To evaluate the impact of the introduction and withdrawal of financial incentives on alcohol screening and brief advice delivery in English primary care. Design Interrupted time–series using data from The Health Improvement Network (THIN) database. Data were split into three periods: (1) before the introduction of financial incentives (1 January 2006–31 March 2008); (2) during the implementation of financial incentives (1 April 2008–31 March 2015); and (3) after the withdrawal of financial incentives (1 April 2015–31 December 2016). Segmented regression models were fitted, with slope and step change coefficients at both intervention points. Setting England. Participants Newly registered patients (16+) in 500 primary care practices for 2006–16 (n = 4 278 723). Measurements The outcome measures were percentage of patients each month who: (1) were screened for alcohol use; (2) screened positive for higher‐risk drinking; and (3) were reported as having received brief advice on alcohol consumption. Findings There was no significant change in the percentage of newly registered patients who were screened for alcohol use when financial incentives were introduced. However, the percentage fell (P < 0.001) immediately when incentives were withdrawn, and fell by a further 2.96 [95% confidence interval (CI) = 2.21–3.70] patients per 1000 each month thereafter. After the introduction of incentives, there was an immediate increase of 9.05 (95% CI = 3.87–14.23) per 1000 patients screening positive for higher‐risk drinking, but no significant further change over time. Withdrawal of financial incentives was associated with an immediate fall in screen‐positive rates of 29.96 (95% CI = 19.56–40.35) per 1000 patients, followed by a rise each month thereafter of 2.14 (95% CI = 1.51–2.77) per 1000. Screen‐positive patients recorded as receiving alcohol brief advice increased by 20.15 (95% CI = 12.30–28.00) per 1000 following the introduction of financial incentives, and continued to increase by 0.39 (95% CI = 0.26–0.53) per 1000 monthly until withdrawal. At this point, delivery of brief advice fell by 18.33 (95% CI = 11.97–24.69) per 1000 patients and continued to fall by a further 0.70 (95% CI = 0.28–1.12) per 1000 per month. Conclusions Removing a financial incentive for alcohol prevention in English primary care was associated with an immediate and sustained reduction in the rate of screening for alcohol use and brief advice provision. This contrasts with no, or limited, increase in screening and brief advice delivery rates following the introduction of the scheme

A cluster randomised trial of strategies to increase cervical screening uptake at first invitation (STRATEGIC)

Acknowledgements The STRATEGIC study research team thanks Sara Rodgers and Laura Clark at the University of York for their input conducting qualitative interviews. We are grateful to Maggie Redshaw at the National Perinatal Epidemiology Unit (NPEU) for helpful suggestions to attempt to improve the response rate in our study. We also would like to thank the NPEU design team who significantly improved the look of our final questionnaire, and the NPEU administration team for their assistance preparing the mail-out material. Special thanks are given to our data entry team Sissi Hernandez-Quesada, Jacob Stevens and Pamela White. The authors would also like to thank Zeinab Abbas for her valuable assistance in the economic evaluation. We would like to express our gratitude to the teams at the English and Scottish screening agencies for their willingness to collaborate in this study. Finally, we thank all women who participated and completed the DCE survey. Any errors or omissions are entirely our own. We are indebted to the support provided by the Lancashire and South Cumbria Agency, without whom we could not have provided the interventions. We also wish to thank Linsey Nelson for her painstaking work in helping to compile this report. Funding Funding for this study was provided by the Health Technology Assessment programme of the National Institute for Health Research.Peer reviewedPublisher PD

Data integration for offshore decommissioning waste management

Offshore decommissioning represents significant business opportunities for oil and gas service companies. However, for owners of offshore assets and regulators, it is a liability because of the associated costs. One way of mitigating decommissioning costs is through the sales and reuse of decommissioned items. To achieve this effectively, reliability assessment of decommissioned items is required. Such an assessment relies on data collected on the various items over the lifecycle of an engineering asset. Considering that offshore platforms have a design life of about 25 years and data management techniques and tools are constantly evolving, data captured about items to be decommissioned will be in varying forms. In addition, considering the many stakeholders involved with a facility over its lifecycle, information representation of the items will have variations. These challenges make data integration difficult. As a result, this research developed a data integration framework that makes use of Semantic Web technologies and ISO 15926 - a standard for process plant data integration - for rapid assessment of decommissioned items. The proposed solution helps in determining the reuse potential of decommissioned items, which can save on cost and benefit the environment

Clinical effectiveness and cost-effectiveness of surgical options for the management of anterior and/or posterior vaginal wall prolapse: two randomised controlled trials within a comprehensive cohort study results from the PROSPECT Study

Peer reviewedPublisher PD