18 research outputs found
Use of organophosphorus(V) sulfides for the modification of propene polymerization catalysts
No full textPhysiotherapy movement based classification approaches to low back pain: comparison of subgroups through review and developer/expert survey
No full textBackground: Several classification schemes, each with its own philosophy and categorizing method, subgroup low back pain (LBP) patients with the intent to guide treatment. Physiotherapy derived schemes usually have a movement impairment focus, but the extent to which other biological, psychological, and social factors of pain are encompassed requires exploration. Furthermore, within the prevailing `biological' domain, the overlap of subgrouping strategies within the orthopaedic examination remains unexplored. The aim of this study was "to review and clarify through developer/expert survey, the theoretical basis and content of physical movement classification schemes, determine their relative reliability and similarities/differences, and to consider the extent of incorporation of the bio-psycho-social framework within the schemes"
Design metrics for evaluating the propulsive efficiency of future ships
No full textThere is an increasing need for the ship design process to take account of environmental issues such as the emission of greenhouse gases and the likely extension of a carbon dioxide charging mechanism to international shipping. These issues, together with the need for economic viability, provide further incentives to improve the efficiency of propulsion of ships. The main components of powering are firstly reviewed. Individual components and other power saving devices are identified which should contribute to improvements in the overall efficiency of propulsion. Suitable design metrics and procedures, taking into account economic and environmental factors, are recommended for the design of future ships
Psychological Features and Their Relationship to Movement-Based Subgroups in People Living With Low Back Pain
No full textSynthesis and characterization of greener ceramic materials with lower thermal conductivity using olive mill solid byproduct
No full textIn the current research, the valorization of olive mill solid waste as beneficial admixture into clay bodies for developing greener ceramic materials with lower thermal conductivity, thus with increased thermal insulation capacity towards energy savings, is investigated. Various clay/waste mixtures were prepared. The raw material mixtures were characterized and subjected to thermal gravimetric analysis, in order to optimize the mineral composition and maintain calcium and magnesium oxides content to a minimum. Test specimens were formed employing extrusion and then sintering procedure at different peak temperatures. Apparent density, water absorption capability, mechanical strength, porosity and thermal conductivity were determined on sintered specimens and examined in relation to the waste percentage and sintering temperature. The experimental results showed that ceramic production from clay/olive-mill solid waste mixtures is feasible. In fact, the mechanical properties are not significantly impacted with the incorporation of the waste in the ceramic body. However, the thermal conductivity decreases significantly, which can be of particular interest for thermal insulating materials development. Furthermore, the shape of the produced ceramics does not appear to change with the sintering temperature increase. © The Author(s) 2020
The impact of social isolation on pain interference : a longitudinal study
No full textOnline-first April 2018Background: Evidence suggests social interactions play an important role in pain perception.
Purpose: The aim of this study was to determine whether social isolation (SI) in people with persistent pain determines pain interference (PI) and physical function over time.
Methods: Patients seeking care at a tertiary pain management referral center were administered the Patient Reported Outcome Measurement Information System (PROMIS®) SI, PI, physical function, depression, and average pain intensity item banks at their initial consultation and subsequent visits as part of their routine clinical care. We used a post hoc simulation of an experiment using propensity score matching (n = 4,950) and carried out a cross-lagged longitudinal analysis (n = 312) of retrospective observational data.
Results: Cross-lagged longitudinal analysis showed that SI predicted PI at the next time point, above and beyond the effects of pain intensity and covariates, but not vice versa.
Conclusions: These data support the importance of SI as a factor in pain-related appraisal and coping and demonstrate that a comprehensive assessment of the individuals’ social context can provide a better understanding of the differential trajectories for a person living with pain. Our study provides evidence that the impact of pain is reduced in individuals who perceive a greater sense of inclusion from and engagement with others. This study enhances the understanding of how social factors affect pain and have implications for how the effectiveness of therapeutic interventions may be improved. Therapeutic interventions aimed at increasing social connection hold merit in reducing the impact of pain on engagement with activities
Pain interference and physical function demonstrate poor longitudinal association in people living with pain: a PROMIS investigation
No full textFear of movement is related to trunk stiffness in low back pain
No full textBackground: Psychological features have been related to trunk muscle activation patterns in low back pain (LBP). We hypothesised higher pain-related fear would relate to changes in trunk mechanical properties, such as higher trunk stiffness
Current and published data for trunk mechanical properties.
No full text*<p>Data for the current study relate to a perturbation induced by a removal of smaller load than that used in the study by Hodges et al. <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0067779#pone.0067779-Hodges1" target="_blank">[3]</a>.</p
<i>P</i>-values (independent t-tests) for comparison of mechanical properties between groups stratified by median value of psychosocial variables.
No full text*<p> = <i>P</i><0.05.</p><p>Stiffness (K) = (N/m), Damping (B) = (N s/m). TSK = Tampa Scale for Kinesiophobia, FABQ-W & PA = Fear Avoidance Beliefs Questionnaire-Work & Physical Activity subscales, PCS = Pain Catastrophizing Scale, PHODA-SeV = Photographs of Daily Activity – Short electronic Version.</p
