The maximum test load of Changlongshan pumped storage power station steel bifurcation pipe is 10MPa. To ensure the safety water pressure test, acoustic emission used to monitor main welds crescent rib and cone. Taking NO.3 pipe’s data as an example, source location system was find possible position harmful defects, through activity intensity sources confirm defect significance. After analysis, ...

We describe and demonstrate a volume holographic storage system in which a phase-conjugate object beam is reconstructed by the same reference beam that was used for recording. An intermediate hologram is used as a temporary buffer, recorded with its own reference beam and the data-bearing object beam. Reading this buffer hologram with the phase conjugate of its reference beam reconstructs the p...

Intermittent streamflow is a common occurrence in permeable catchments, especially where there are pumped abstractions to water supply. Many rainfall-runoff models are not formulated so as to represent ephemeral streamflow behaviour or to allow for the possibility of negative recharge arising from groundwater pumping. A groundwater model component is formulated here for use in extending existin...