Several recent studies have found markedly increased rates of schizophrenia among West Indian immigrants to the UK. Almost exclusively, authors have sought psychosocial explanations for these findings. This paper hypothesises that environmental causes, notably obstetric complications and perinatal infections, provide more plausible aetiological models, especially for the raised rates of schizop...

The present experiment examined the effects of input/output modality pairings on dual-task performance using the psychological refractory period (PRP) procedure. Four groups of participants performed two tasks composed of the same sets of inputs (visual and auditory) and the same sets of outputs (manual and vocal), but with different input/output modality pairings. Whereas modality pairings had...

INTRODUCTION Congenital diaphragmatic hernia (CDH) is a defect of the diaphragm with the penetration of organs of the abdominal cavity into thorax. Localization and size of the defect of the diaphragm condition the time and range of clinical manifestation. The most common is unilateral, without hernia sac, located on the left side, through posterolateral opening of the diaphragm and with clinic...

"Change-in-support" balance-recovery reactions that involve rapid stepping or reaching movements play a critical role in preventing falls. Recent geriatrics studies have led to new interventions to improve ability to execute these reactions effectively. Some of these interventions have the potential to reduce fall risk for younger persons working in industrial settings. In this paper, we review...

Estimates suggest that each year millions of birds, predominantly Neotropical migrating songbirds, collide with communication towers. To determine the relative collision risks that different nighttime Federal Aviation Administration (FAA) communication tower obstruction lighting systems pose to night-migrating birds, we compared fatalities at towers with different systems: white strobe lights o...

Railway level crossings are amongst the most complex of road safety control systems, due to the conflicts between road vehicles and rail infrastructure, trains and train operations. Driver behaviour at railway crossings is the major collision factor. The main objective of the present paper was to evaluate the existing conventional warning devices in relation to driver behaviour. The common conv...

Introduction: Chronic renal disease compromises of several renal involvements and several causative risk factors such as debates mellitus, hypertension, and old age. Ocular involvement seems to be related to chronic renal failure and hemodialysis as indicated by different studies. The aim of this study was the evaluation of prevalence of ocular manifestation in hemodialysis patients of Hamadan ...

plastic bronchitis (pb) refers to the presence of inspissated bronchial casts (bc) is uncommon in children.our case presented with subcutaneous emphysema as the dominant manifestation and was suspected to have foreign body in airway, but bronchoscopy revealed a bronchial cast. subcutaneous emphysema as the initial/sole manifestation of plastic bronchitis is very rare in children.

pretibial myxedema is an uncommon manifestation of graves' disease and because of its rarity, information regarding its natural course and its relationship with other manifestations of graves' disease is not sufficient. we reviewed 150 consecutive cases diagnosed as having pretibial myxedema in a twenty-year period in a tertiary care center. only one patient in this group did not have ophthalmo...