78 research outputs found

    Hubble Space Telescope Bi-Stem Thermal Shield Analyses

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    The Hubble Space Telescope (HST) was launched April 24, 1990, and was deployed April 25 into low Earth orbit (LEO). It was soon discovered that the metal poles holding the solar arrays were expanding and contracting as the telescope orbited the Earth passing between the sunlight and the Earth s shadow. The expansion and contraction, although very small, was enough to cause the telescope to shake because of thermal-induced jitters, a detrimental effect when trying to take pictures millions of miles away. Therefore, the European Space Agency (ESA, the provider of the solar arrays) built new solar arrays (SA-11) that contained bi-stem thermal shields which insulated the solar array metal poles. These thermal shields were made of 2 mil thick aluminized-Teflon fluorinated ethylene propylene (FEP) rings fused together into a circular bellows shape. The new solar arrays were put on the HST during an extravehicular activity (EVA), also called an astronaut space walk, during the first servicing mission (SM1) in December 1993. An on-orbit photograph of the HST with the SA-11, and a close up of the bellows-like structure of the thermal shields is provided in Figure 1

    Passing the time when in pain: investigating the role of musical valence

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    The effective management of pain outside of clinical settings represents a significant challenge to health services. Music listening has been successfully used as a method of pain management, with the greatest benefits to listeners evident if the music is familiar, preferred and has emotional resonance. This study examined the role of self-selected emotion-inducing music used for pain management (pain tolerance, intensity, perceived control, distraction and anxiety reduction) during the cold pressor test. In a repeated-measures design, four cold pressor tests were used to induce short-term, acute pain, whilst 41 participants listened either to happy, sad, relaxing or no music. Findings indicated that music enhanced pain tolerance over no music, and happy and relaxing music increased pain tolerance and altered time perception to a greater extent than sad music. Happy and relaxing music facilitated distraction from pain and enhanced perceived pain control. Relaxing music additionally had anxiolytic properties and reduced pain intensity. Results suggest that music’s inclusion in pain management is justified and that music with happy and relaxing components can be used to facilitate coping with pain in a non-clinical context

    Developing successful social support: An interpretative phenomenological analysis of mechanisms and processes in a chronic pain support group

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    Objective. The experience of long-term membership of a successful Chronic Pain Support Group (CPSG) was explored to identify; i) factors associated with social support, and; ii) ways that health-care professionals (HCPs) could help CPSGs become more effective and supportive. Design. Interpretative Phenomenological Analysis enabled exploration of participants’ experiences of membership and rationales for continued attendance. Main outcome measures. Twelve participants (four males, eight females), recruited from a regional CPSG, completed semi-structured interviews lasting from 45-120 minutes. Following verbatim transcription, idiographic then cross-case analyses were undertaken. Results. Three superordinate themes emerged: (1) Investing in the new normal; (2) The nurturing environment; (3) Growth facilitation through social evolution. Increased investment and identification with membership, generated snowballing social engagement, enhancing pain management/well-being through collective humour and peer-to-peer support. Explicit guidance by HCPs in early stages of group formation/development, and subsequent implicit influences on group attitudes and actions, promoted the group’s development into its current healthy, supportive state. Conclusion. Contrary to stereotypes, membership offered positive respite from chronic pain through collective coping. Successful CPSGs forge an independent identity, fostering strong group investment and an ability to live well with chronic pain. HCPs can provide a stabilising foundation for CPSGs to develop positively and supportively

    Living with chronic neuropathic pain after spinal cord injury: an interpretative phenomenological analysis of community experience.

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    Purpose: This article presents an in-depth, idiographic study examining the lived experience of chronic pain following spinal cord injury (SCI). Neuropathic pain (NP) occurs in a large majority of the SCI population and is particularly intractable to treatment. It can be both psychologically and physically debilitating. This study examines how the experience of NP is mediated by its meaning to the sufferer. Methods: Semi-structured interviews were conducted with eight people with SCI and chronic NP, attending outpatient clinics at a specialist SCI Centre in the UK. Verbatim transcripts were subjected to interpretative phenomenological analysis to further understand the experience. Results: Analysis suggested that NP has powerful consequences upon the sufferer's physical, psychological and social well-being, in line with a biopsychosocial understanding of pain. Three super-ordinate themes were identified: a perceived gap between treatments received and participants' views of what they wanted and needed; a fight for life control and acceptance; and feeling understood by others with SCI, but isolated from the non-understanding able-bodied. Conclusions: The results are discussed in terms of the possible application of acceptance-based therapy to NP and the potential for the alleviation of the debilitating consequences of NP. Implications for Rehabilitation Chronic NP after SCI is often described as worse than the injury itself, often impacting upon the sufferers physical and psychological health. The experiences of persons with SCI-specific NP highlight the impact of pain on their physical, psychological and social health. This indicates that healthcare professionals should incorporate a biopsychosocial approach for managing pain post-SCI. Routine clinical follow-up of SCI patients with chronic NP, as well as comprehensive pain management treatment programmes, could address the three themes evidenced in the current study, by moving routine intervention with NP away from pain relief, towards pain management. Continued education for patients, friends, family members and healthcare professionals may be beneficial in promoting understanding and awareness of NP and its consequences following SCI

    Psychological outcomes of MRSA isolation in spinal cord injury rehabilitation

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    Study design Retrospective secondary analysis with a quantitative, matched-pairs design. Patients isolated due to methicillin- Resistant Staphylococcus aureus (MRSA) were matched with controls without MRSA infection admitted to a multi-bedded ward, based on: gender, injury level, injury severity (AIS grade), age at the time of injury and year of admission. Objectives Determine the implications of MRSA-related infection isolation on spinal cord injury patients’ anxiety, depression, appraisals of disability, perceived manageability and pain intensity. Hypotheses predicted patients who were isolated due to MRSA during inpatient stay would demonstrate poorer psychological health outcomes at discharge in comparison with non-isolated matched controls. Setting National Spinal Injuries Centre, England, UK. Methods Secondary analyses were conducted on pre-existing data based on patients’ first admission for primary rehabili- tation. Psychometric scales were used to measure outcome variables. Assessments were repeated at the time of admission and discharge. Results Nonparametric longitudinal analyses using the nparLD package in R were conducted. Relative treatment effects demonstrated that there were no significant differences between groups across all outcome measures. There was a significant effect of time (admission vs discharge) on perceived manageability and pain intensity, indicating improved outcomes at discharge. There was no difference in the overall length of stay between the isolated and non-isolated groups. Conclusions Isolation experienced by rehabilitation inpatients with spinal cord injury with MRSA had no effect on a series of psychological outcomes. Engaging with rehabilitation had a positive impact in reducing pain unpleasantness and increasing perceived manageability of spinal cord injury, irrespective of infection isolation
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