𝔖 Bobbio Scriptorium
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Groundwater in Nigeria – a millennium experience – distribution, practice, problems and solutions

✍ Scribed by Christopher N. Akujieze; S. Coker; G. Oteze


Publisher
Springer
Year
2003
Tongue
English
Weight
297 KB
Volume
11
Category
Article
ISSN
1431-2174

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📜 SIMILAR VOLUMES


A practical solution to the problem of n
✍ A. Amini; I. Owen 📂 Article 📅 1995 🏛 Elsevier Science 🌐 English ⚖ 453 KB

The mechanical vibration that is occasionally found in gas pressure reducing valves can be eliminated by careful design of the valve plug and seat. A pressure-reducing valve was found to be excessively noisy, producing a sound pressure level of 117 dB when throttling air at an inlet-to-outlet pressu