Angus Beal

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Few studies have evaluated the relative importance of bottom-up regulation for the population dynamics of mutualism. To address this, we tested the hypothesis that host plant quality affects the strength of the mutualism between Publilia concava (Say) (Hemiptera: Membracidae) treehoppers feeding on Solidago altissima L. and ants. P. concava is a(More)
We report a case of an obstructing fungus ball of the urinary tract. Typical predisposing factors were present, i.e. bladder catheter, vesico-ureteral reflux, urinary infection, parenteral nutrition, prolonged antibiotherapy, hyperglycemia. Candida albicans septicemia was noted. Diagnosis was made by percutaneous nephrostomy under echographic control(More)
The study of 93 eyes receiving neutron irradiation establishes the character of the ophthalmic complications of neutron. Significant changes are produced in the eyelids, conjunctiva, and cornea, but the production of cataract is relatively unimportant. No reaction was seen after neutron treatment that had not already been seen after chi or gamma radiation.(More)
BACKGROUND Previous studies have suggested that patients with an indeterminate troponin I (TnI) in the emergency department (ED) are significantly more likely to be diagnosed with acute myocardial infarction (MI). The role of the ED observation unit (EDOU) in the evaluation of these patients is unclear. OBJECTIVE We sought to determine the risk of MI and(More)
Patients with advanced tumours of the head and neck have been treated with fast neutrons from the Medical Research Council's cyclotron at Hammersmith Hospital for the last 5 years. In 62 per cent of the first hundred cases there was complete regression of the tumour and in only two cases did the tumour recur (Catterall and Vonberg, 1974). The effects of(More)
BACKGROUND Outbreaks of group A streptococcus (GAS) infections may occur in healthcare settings and have been documented in surgical, obstetrics and gynaecology, and burns units. The environment may serve as a reservoir and facilitate transmission via contaminated equipment. AIM To describe the investigation and control of an outbreak of(More)
INTRODUCTION Coronary Angiography is the standard technique for imaging the left ventricle and coronary arteries. Within the spectrum of diagnostic imaging coronary Angiography is a high dose procedure. The number of examination has significantly increased in recent years, partly due to the introduction of diagnostic X-ray equipment with improved imaging(More)
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