Prediction of Internal Bond Strength in Particleboard from Screw Withdrawal Resistance Models

Density, internal bond (IB) strength, and screw withdrawal resistance (SWR) data from 20 MS and M2 grade particleboards from two Canadian manufacturers were used to examine the correlations between face and edge SWR, and density and IB. SWR data were matched with previously published models for SWR as functions of density or IB, which were only reliable if they contained terms for screw dimensions and embedment depth. There was little or no correlation between the face or edge SWR of particleboards and their density, but sufficiently good correlation with IB (r2 > 0.7) to support the development of SWR tests as a useful, rapid estimate of IB of particleboard panels. The proposed models are internally calibrated to 5/8-in.-thick board only and need to be developed and tested on other particleboards

Evaluation of the Primary Care Mental Health Specialist role: Final Report

This report details an evaluation to assess the impact of the new primary care mental health specialist (PCMHS) role in Kent and Medway. The evaluation was undertaken by the Centre for Health Services Studies (CHSS) at the University of Kent and was conducted June 2013 to December 2014. The evaluation was commissioned by NHS Kent and Medway and supported by Kent and Medway Commissioning Support. The evaluation encompasses six CCG areas across Kent and Medway, with 13 PCMHS employed in these areas (see Table 1-1 for breakdown). The number of posts per CCG is dependent on the amount CCGs invest (roughly equating to population size), rather than prevalence of illness. The PCMHS have been seconded from Kent and Medway NHS and Social Care Partnership Trust (KMPT) for the duration of the pilot, and are either community psychiatric nurses (CPN) or occupational therapists (OT) by profession. The majority of PCMHS are hosted by a voluntary organisation (mcch); three are hosted by GP practices and two by a community Interest Company, Invicta CIC. The main objectives of the evaluation are: 1. To assess the impact on patients by capturing their experience of the service; 2. To assess the impact by capturing experiences of those delivering the service (i.e., PCMHS); 3. To assess the impact by capturing experiences of other professions who work alongside the service (i.e., mental health professionals in secondary care, GPs); 4. To assess the economic cost of the new service via a unit cost analysis

Testing the public’s response to receiving severe flood warnings using simulated cell broadcast

European Governments must implement a public alerting system to reach mobile phone users affected by major emergencies and disasters by June 2022. Cell Broadcast is used to issue emergency alerts in several countries but has not yet been introduced in the UK. This paper presents the results of a joint research exercise that explored recipients’ responses to cell broadcast messages that warned of floods of varying certainty, severity, and urgency. We adopted a mixed-methods approach employing semi-structured questions and focus groups to assess the perceptions of 80 workshop participants who received simulated emergency alerts on pre-prepared handsets. Our results suggest that although emergency alerting is welcomed, it is necessary to provide accurate and verifiable information, address accessibility challenges, and state location clearly and understandably. This life-saving technology, if used aptly by not over-alerting, specifying the specific urgency, certainty, severity and location of the flood risk, has the real potential of upgrading flood warnings in the UK

Cognitive Interventions for Older Adults: Does Approach Matter?

Assisted living (AL) is the fastest growing option for residential care that is designed to provide older adults with needed supports while promoting independence1. Nevertheless, AL residents typically experience progressive decline in cognitive ability and self-care that necessitates more intensive nursing care, and typically, most AL residents will transfer to a nursing home (NH) within one to three years1–4. Older adults require a variety of cognitive abilities to meet every day self-care challenges needed to remain in AL. Cognitive decline is key predictor of disability and NH placement for AL residents 5. Someone in the US is diagnosed with Alzheimer’s disease (AD) every 68 seconds, and the number of dementia sufferers will double by 2050, reaching 16 million6. Therefore, the development of new interventions to decrease cognitive decline is critical. Cognitive training programs are gaining popularity based on the notion that “use it or lose it” applies to cognition7,8. Research demonstrates that training in specific cognitive skills can improve memory, cognitive processing speed, spatial orientation, reasoning, and executive function in community dwelling older adults 7,9. Cognitive training can also benefit persons with dementia and mild cognitive decline. A meta-analysis of cognitive training research involving persons with early-stage AD reported overall effect sizes of 0.47 for interventions targeting learning, memory, and executive function, with improvements in activities of daily living (ADLs), problem solving, depression, and self-rated functioning10. A cognitive training intervention called Reasoning Exercises in Assisted Living (REAL) was developed to teach reasoning and problem solving skills to AL residents who are at risk for cognitive and functional decline. The intervention was modeled after the inductive reasoning skills found to improve cognition and maintain self-care over 5 years in healthy, independent older adults11. The REAL program includes six, hour-long, sessions in which providers work individually with AL residents12. The goal of this intervention is to improve older adults’ everyday problem-solving skills so they can maintain their ability to care for themselves and “age in place” in AL. REAL successfully improved problem solving scores of AL residents in a preliminary study12. Results from a subsequent cluster randomized clinical trial (reported elsewhere) also show potential for this intervention13. REAL is provided to AL residents in a one-to-one format. This approach has been successful. However, having adequate interventionists to provide REAL to individual AL residents is a challenge and is costly. Considering that cost is one predictor of successful dissemination of interventions in real-world settings, more efficient ways to provide REAL to large numbers of AL residents are needed14. Thus, the purpose of this pilot study was to examine feasibility and compare costs and outcomes for REAL provided in individual versus small group formats

Transverse Permeability of OSB. Part II. Modeling the Effects of Density and Core Fines Content

In this work a simple rule of mixtures model to characterize the permeability of an OSB composite as a function of fines contents and density is presented. Strands and fines in the core of the board are considered to lie between two extremes, either stacked in a series configuration (series model) or side by side in a parallel configuration (parallel model), with the permeability of the composite, Ksystem, being a function of relative permeabilities of the series and parallel models. Equations for the permeability of these two configurations, Kparallel and Kseries, are developed as functions of the known permeability of 100% strands, Ks, and 100% fines, Kf, and the mass fraction of fines, Mf. Data on the permeability of the core of OSB compressed to three density classes and made with 0 and 100% fines content are used to determine the permeability of the parallel and series models, respectively. The series coefficient, α, which represents the contribution from the series model, is determined using least squares fits to the permeability data for different target densities and 25%, 50%, and 75% fines contents. α was fairly consistent, ranging from 0.47 to 0.49 for these fines contents. Kparallel increases linearly with increasing fines content and Kseries increases exponentially, in accord with the actual data. The data for the low and medium target density boards were well described by the Ksystem predictions, whereas the model underestimates the permeability of boards containing 75% or 100% fines and compressed to high target density. The model was most sensitive to changes in Mf, Kf, and Ks, with other parameters, α and density ratio (ρs/ρf), having smaller effects. The proposed model is general and could be applied to other composites of mixed particle sizes such as particleboard

Permeability of OSB. Part I. The Effects of Core Fines Content and Mat Density on Transverse Permeability

This paper reports on the effects of density and core fines content on the transverse permeability, K, of oriented strandboard (OSB), with the aim of using fines generated during the log stranding process to improve mat permeability and possibly press efficiency. Forty-five OSB panels were made in the laboratory containing five levels of fines content (0, 25, 50, 75, and 100%) and compressed to three target density levels (low—450, medium—550, and high—650 kg/m3). Both density and fines content and their interaction significantly influenced Kcore, which increased exponentially with fines content at each density level. Above 75% fines, density level no longer had any significant effect on Kcore, indicating that as the mat is compressed, the presence of fines maintains a more interconnected void system through which gas can pass. The rate of heat transfer to the core was affected by board thickness but contrary to expectations, not by fines content. Fines content did, however, affect the accumulation of gas pressure in the high target density heavily compressed boards; maximum core gas pressure was significantly reduced if core fines content was greater than 50%

Improving Core Bond Strength of Particleboard Through Particle Size Redistribution

Novel particleboard furnish mixtures were formulated to improve the core-bonding and screw-holding of industrial particleboard without increasing resin content or board density. Single-layer (uniform vertical density with core furnish only) and conventional 3-layer particleboards were manufactured at two density levels from four novel mixes plus control (unscreened industrial core furnish). Board mean and core density, internal bond strength, edge screw withdrawal resistance, and moduli of rupture and elasticity were measured.The core of commercial furniture-grade particleboard appears to contain too many fine particulates and insufficient coarser particles. Uniform density profile single-layer boards containing novel mixes with higher-coarse (>2 mm) and lower-fines

Vice-Chancellor's Gender Equality Fund Final Report 2021: Equity, Policy and Practice: Disruptions to Candidature and Barriers to Career Progression for Women HDR Candidates

Whilst prior research has established barriers to career progression for women academics, the experiences of women HDR candidates and the barriers to candidature progression, including movement to on-going, academic labour, or careers outside of academia, has not received the same level of attention. This project therefore aims to generate a better understanding of equity considerations for research disruption, with particular reference to the COVID-19 pandemic, for women HDR candidates. There are two key research questions for this project: 1. What are the barriers to HDR progression for WSU women candidates? 2. How might WSU support the progression of women HDR candidates through targeted strategies? This report provides recommendations for best practice for supporting the progression of women HDR candidates at Western

Spitzer Mid-Infrared Spectroscopy of 70um-Selected Distant Luminous Infrared Galaxies

We present mid-infrared spectroscopy obtained with the Spitzer Space Telescope of a sample of 11 optically faint, infrared luminous galaxies selected from a Spitzer MIPS 70um imaging survey of the NDWFS Bootes field. These are the first Spitzer IRS spectra presented of distant 70um-selected sources. All the galaxies lie at redshifts 0.3<z<1.3 and have very large infrared luminosities of L_IR~ 0.1-17 x 10^12 solar luminosities. Seven of the galaxies exhibit strong emission features attributed to polycyclic aromatic hydrocarbons (PAHs). The average IRS spectrum of these sources is characteristic of classical starburst galaxies, but with much larger infrared luminosities. The PAH luminosities of L(7.7) ~ 0.4 - 7 x 10^11 solar luminosities imply star formation rates of ~ 40 - 720 solar masses per year. Four of the galaxies show deep 9.7um silicate absorption features and no significant PAH emission features (6.2um equivalent widths < 0.03um). The large infrared luminosities and low f70/f24 flux density ratios suggests that these sources have AGN as the dominant origin of their large mid-infrared luminosities, although deeply embedded but luminous starbursts cannot be ruled out. If the absorbed sources are AGN-dominated, a significant fraction of all far-infrared bright, optically faint sources may be dominated by AGN.Comment: 8 Pages, ApJ accepte