| 31. | NMR measurements of the resonance frequency on YBCO indicated that electrons in the copper oxide superconductors are paired in spin-singlet states.
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| 32. | The development of selenium rectifiers began during the early 1930s, and these replaced copper oxide rectifiers because they were more efficient.
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| 33. | In Saintonge Green wares, the addition of copper filings, or copper oxide to the clear lead glaze, produced a mottled mid-green colouring.
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| 34. | So he turned their front yard into a water garden, with a low bridge of concrete slabs, stained green with copper oxide.
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| 35. | So you form hydrogen gas and copper oxides, which are not soluble .-- BluePlatypus 17 : 26, 24 May 2006 ( UTC)
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| 36. | Compared with the earlier copper oxide rectifier, the selenium cell could withstand higher voltage but at a lower current capacity per unit area.
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| 37. | The initial batch is melted together from silica, copper oxide, and other metal oxides to chemically reduce the copper ions to elemental copper.
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| 38. | The material is also very light and appears to be easier to work with than the copper oxides in the so-called high-temperature superconductors.
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| 39. | The resulting gas was passed through hot copper oxide to convert any carbon monoxide to, and then dried to remove any water vapour.
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| 40. | Copper oxide was found to be the worst offender, and was the only nanomaterial identified by the researchers as a clear health risk.
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