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In this study, the ACQ-D preservative treatments of poplar wood were carried out using the method of living tree injection treatment and the leachability was examined by comparing with the traditional treatment methods, namely, immersion and pressure treatment. In addition, the effects of injection experiment on the soil environment and preservative stability in wood were examined. The results showed that the effect of injection experiment on soil environment around the treated trees was insignificant and the preservative stability of the injection treatment was the best among three methods. ACQ-D preservatives leached easily as the increase of concentration. The retention of preservative after pressure treatment was greater than that of the injection and immersion treatment, but after the leaching tests, three methods had the same preservation grade.

This study prepared a dense Sm-doped ceria (SDC) and an SDC carbonate composite (abbreviated as SDC-C). The latter was prepared by immersing porous SDC with a formula of (Ce 0.8 Sm 0.2 )O 1.9 and a relative density of approximately 65-70% into a molten mixture of carbonates containing 1:1 molar ratio of Li 2 CO 3 and Na 2 CO 3 at 500°C. The relative density of the SDC-C was close to 100%. In addition, SDC oxide without carbonates, which also has a relative density of close to 100%, was heat treated at 1600°C. At 500°C, the electrical conductivity and ionic transference number (t i ) of the SDC oxide were 1.79(5)1 0 -3 S·cm -1 and 0.99(2), respectively, such that electronic conduction could be disregarded. Increasing the temperature caused a gradual decrease in the t i of SDC. Following the addition of carbonates to SDC, the electrical conductivity reached 1.23(9)´10 -1 S·cm -1 at 500°C. After 14 days (340 h), the electrical conductivity of the SDC-C at 490°C, leveled off at about 6´10 -2 S·cm -1 . SDC-C could be used as a potential electrolyte in solid oxide fuel cells (SOFCs) at temperatures below 500°C.

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