The purpose of this review was to organize a systematic reference to help orthodontists evaluate commonly used orthodontic nickel-titanium alloys. Part I of the article reviewed the data available in the literature regarding the temperature transitional ranges of the alloys. The thermomechanical behavior of these compounds is, in fact, strictly dependent upon the correlation between the tempera...

Brown, R., and Pickering, D. (1974). Archives of Disease in Childhood, 49, 883. Persistent transitional circulation. Six infants presented within 24 hours of birth with cyanosis. The clinical findings, combined with catheter studies in 4 cases, led to the conclusion that there was a persistent fetal direction of ductus arteriosus flow with pulmonary hypertension, i.e. a 'persistent transitional...

Over the past two decades, there have been substantial developments in the understanding of brain development and the importance of environmental inputs and context. This paper focuses on the neurodevelopmental mismatch that occurs during the epoch we term the 'transitional age brain' (ages 13-25) and the collateral behavioral correlates. We summarize research findings supporting the argument t...

A retrospective survey of young servicemen presenting with transitional cell carcinoma of the bladder aged 40 years or below is presented, 19 such patients having been identified over a 20-year period. The results were compared with those of other similar series. The tumour behaviour appears to vary with age at presentation, its propensity for multifocal presentation, recurrence, progression to...

Transitional cell carcinoma (TCC) of the urinary bladder, the most common malignancy of the urinary tract in dogs, is challenging to both diagnose and treat effectively. The prevalence of this disease may be increasing. The etiology of canine TCC is likely multifactorial. Epidemiological studies of TCC in the dog have revealed a number of risk factors, including breed and female gender, as well...

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