The explosive growth of the World Wide Web, and the resulting information overload, has led to a miniexplosion in World Wide Web search engines. This mini-explosion, in turn, led to the development of ProFusion, a meta search engine. Educators, like other users, do not have the time to evaluate multiple search engines to knowledgeably select the best for their uses. Nor do they have the time to...

OBJECTIVES To analyse quantitatively the relations of spirometric lung function (forced vital capacity (FVC)) to radiographic interstitial pulmonary fibrosis (assessed by the International Labour Organisation (ILO) profusion score of small irregular opacities) in two large workforces exposed to different intensities of asbestos. These analyses consider the question whether a similar profusion s...

YONE who teaches knows there are two questions to steer clear of on exams: the one about evolution, to which there is no certifiable answer; and the one about gene control, to which every conceivable answer is correct. Or so it seems at times. The profusion of transcriptional and posttranscriptional controls that have emerged in recent years can be simplified by recognizing categories. One cate...

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