120,431 research outputs found
UK back pain exercise and manipulation (UK BEAM) trial - national randomised trial of physical treatments for back pain in primary care: objectives, design and interventions
No full textLow back pain has major health and social implications. Although there have been
many randomised controlled trials of manipulation and exercise for the management of low back
pain, the role of these two treatments in its routine management remains unclear. A previous trial
comparing private chiropractic treatment with National Health Service (NHS) outpatient
treatment, which found a benefit from chiropractic treatment, has been criticised because it did not
take treatment location into account. There are data to suggest that general exercise programmes
may have beneficial effects on low back pain. The UK Medical Research Council (MRC) has funded
this major trial of physical treatments for back pain, based in primary care. It aims to establish if,
when added to best care in general practice, a defined package of spinal manipulation and a defined
programme of exercise classes (Back to Fitness) improve participant-assessed outcomes.
Additionally the trial compares outcomes between participants receiving the spinal manipulation in
NHS premises and in private premises
Large-eddy simulation of combustion instability in a back-step flow
No full textA large-eddy simulation of combustion instability in a back-step flow is performed, and the effect of equivalent ratio on the combustion instability is investigated. Methane is used as the fuel and a two-step global reaction model is used for the reaction. As the turbulent combustion model, a dynamic thickened flame model is used. The results show that flame is stably formed behind the step by the recirculation flow. Large pressure oscillation and periodical change of flame shape are observed in the case of equivalent ratio of 1.0, and the power spectra of the pressure oscillation has peaks whose frequencies and ntensities well agree with those of the previous experimental study. The intensity of the pressure oscillation becomes much smaller in the cases of equivalent ratio of 0.8 and 1.3, and the change of flame shape also becomes smaller
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