Empirical analysis of large diameter water main break consequences

CT assessment of main pulmonary artery diameter.

PURPOSE The purpose of this study was to determine the normal range of the main pulmonary artery diameter (MPAD) by computed tomography (CT) in persons with normal pulmonary artery pressure, and then to evaluate the relationship of the diameter with age, gender, and body surface area (BSA). MATERIALS AND METHODS Between October 2005 and June 2007, among patients who had previously undergone a...

Experimental Studies of Water Wetting in Large-Diameter Horizontal Oil/Water Pipe Flows

Internal pipeline corrosion in oil production and transportation is always associated with the presence of water, and the likelihood of corrosion generally increases with the volume fraction of water. When the walls of the pipeline are wetted with oil no corrosion is possible. Highly turbulent flow was associated with negligible corrosion due to water entrainment by the flowing oil, whereas low...

Empirical consequences of symmetries

There is something of a tension between two aspects of symmetry in physics. On the one hand, there is a widespread consensus that ‘two states of affairs related by a symmetry transformation are really just the same state of affairs differently described’: that is, that if two mathematical models of a physical theory are related by a symmetry transformation, then those models represent one and t...

A large-scale empirical analysis of email . . .

Using Water Main Break Data to Improve Asset Management for Small and Medium Utilities: District of Maple Ridge, B.C

An approach is developed for identifying key data to be used in asset management in general, and for predicting pipe breaks and selecting appropriate models in particular. The approach is applied to the District of Maple Ridge, B.C., Canada to identify the magnitude of a utility’s pipe burst problems today and in the future, enhance the development of pipe replacement priorities based on foreca...