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Poly (methyl methacrylate)/single walled carbon nanotube (PMMA/SWNT) composites were polymerized in the presence of carbon nanotubes via three methods: heat, uv radiation and ionizing radiation (gamma). Samples were solvent processed and cast into films. Thin films with varying degrees of transparency resulted from these composites. Differential Scanning Calorimetry (DSC) characterized glass transition temperatures. Ultraviolet-visible spectroscopy (UV-VIS) quantified the transparency of composites. The dielectric constant (ε') was obtained from Dielectric Analysis (DEA) and correlated to the refractive index values using Maxwell's Relationship. Scanning Electron Microscopy (SEM) provided images of the polymer- nanotube composite.
We investigated the prevalence and predictors of positive tuberculin skin test (TST) results among prospective Vietnamese migrants. We interviewed and medically screened 1395 Vietnamese people aged over 15 years who had applied to migrate to Australia. Approximately 44% of applicants had an induration of 10 mm or more, and 18·6% had an induration of 15 mm or more. A positive tuberculin skin test at 5 mm, 10 mm and 15 mm of induration cut-points was significantly associated with age (OR 1·01–1·02 per year) and duration of smoking (OR 1·03–1·12 per year). Smoking appears to be an important factor associated with increased susceptibility to mycobacterial infection. It is not yet clear whether the increased tuberculin reactivity associated with smoking reflects an increased risk of tuberculosis among these migrants.
A long-term outcome study of DSM–III–R panic disorder included the Present State Examination (PSE) at baseline and follow up five to six years later.
PSE test–retest and individual within-patient change scores on various PSE syndromes were assessed for consistency with either a categorical view of panic disorder as a stable clinical entity or panic disorder as one facet only of a ‘general neurotic syndrome’.
PSE profile at baseline was virtually identical with that at follow up. Few patients had ‘changed’ in PSE syndrome diagnosis after five to six years.
These data, although not conclusive, are supportive of the concept of DSM–III–R panic disorder as a stable clinical entity and are correspondingly difficult to reconcile with the view that panic disorder is but one facet only of a general neurotic syndrome.
The aim was to evaluate long-term outcome of DSM–III–R panic disorder at a mean of 5.3 years following a controlled trial of treatment that included antidepressants and behavioural counselling.
Sixty-eight (86%) subjects were evaluated by lengthy research interview.
Thirty-four per cent recovered and remained well, 46% were minimally impaired and 20% had persistent panic disorder of whom half remained significantly impaired. Anxious–fearful personality dysfunction was the most important predictor of poor outcome, followed by poor clinical status at discharge and inability at baseline to recall vividly the initial panic attack. Those who dropped out from the original trial did badly.
Complete recovery can occur even after many years of severe illness in a large minority of subjects who receive both antidepressants and behavioural counselling in the acute stage of treatment. The comparative prognostic value of personality, severity and chronicity need to be more fully addressed in future studies.
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