منابع مشابه
Construction, operation, and maintenance of rubber dams
Rubber dams are inflatable and deflatable hydraulic structures. Thousands of rubber dams have been installed worldwide for various purposes: irrigation, water supply, power generation, tidal barrier, flood control, environmental improvement, and recreation. Furthermore, rubber dams have been used in cold areas where the temperature is as low as –40°C. The simplicity and flexibility of the rubbe...
متن کاملImpacts of Groundwater Recharge from Rubber Dams on the Hydrogeological Environment in Luoyang Basin, China
In the rubber dam's impact area, the groundwater total hardness (TH) has declined since 2000, ultimately dropping to 100-300 mg/L in 2012. pH levels have shown no obvious changes. NH4-N concentration in the groundwater remained stable from 2000 to 2006, but it increased from 2007 to 2012, with the largest increase up to 0.2 mg/L. NO3-N concentration in the groundwater generally declined in 2000...
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ژورنال
عنوان ژورنال: British Dental Journal
سال: 2005
ISSN: 0007-0610,1476-5373
DOI: 10.1038/sj.bdj.4812229