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Download or read book Methane Sampling Technique and the Measurement of Plunge Pool Impact on Gas Transfer Rates at Low Head Hydraulic Structures written by and published by . This book was released on 1995 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In situ dissolved methane gas was used as a tracer for estimating the gas transfer rates of flow over low-head hydraulic structures. The methane measurement provided a means to assess the effects of the plunging flow in the structure stilling basin. Simultaneous oxygen-methane transfer measurements and nitrogen-methane measurements were used to develop the concept of an "effective depth," which is the mean depth to which entrained air bubbles are transported in the stilling basin. Generally, as discharge increased, the mean depth increased probably as a consequence of the increase in momentum. Effective depths computed with oxygen-methane measurements were very similar to effective depths computed with oxygen-nitrogen measurements, thus verifying the concept of effective depth. Additional measurements should be performed at other structures to relate the effective depth to parameters of the spillway jet and stilling basin. (MM).

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Download or read book Methane Tracer Technique for Gas Transfer at Hydraulic Structures written by John Preston McDonald and published by . This book was released on 1990 with total page 139 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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Download or read book Bulletin of the Atomic Scientists written by and published by . This book was released on 1973-10 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Bulletin of the Atomic Scientists is the premier public resource on scientific and technological developments that impact global security. Founded by Manhattan Project Scientists, the Bulletin's iconic "Doomsday Clock" stimulates solutions for a safer world.

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