| 1 | Preparation of nitrogen-doped titania and its photocatalytic activity显示文摘Yellowish nitrogen-doped titania was produced through sol-gel method in mild condition, with the elemental ni- trogen derived from aqua ammonia. The titania catalysts were characterized using XRD, BET, TEM, XPS, and UV-Vis diffuse reflectance spectrophotometer, and their photocatalytic activities were evaluated under UV and visible light, respec- tively. The XRD results showed that all titania catalysts were anatase. More significantly, the crystallite size of nitro- gen-doped titania increased with an increase in N/Ti proportion, and the doping of nitrogen could extend the absorption shoulder into the visible-light region, thus it possessed a higher visible-light activity illustrated by decolorization of methyl orange (65.3%) under the irradiation of visible light, whereas pure titania showed little of such kind of visible light activity. The UV-light activity of nitrogen-doped titania catalysts was worse than that of pure titania and Degussa P25. In the range of N/Ti proportion of 4-10 mol%, the activity of nitrogen-doped titania weakened appreciably in the visible-light region as the N/Ti proportion increased, whereas a reverse relationship existed under the irradiation of UV light. | QIN Haoli GU Guobang LIU Song | 2007 | Rare Metals2007，26，3： | 5 |
| 3 | Internal Reference Gene Selection for Quantitative Real-Time RT-PCR Normalization in Potato Tissues显示文摘Quantitative real-time PCR(qRT-PCR)is widely used for investigating gene expression patterns and has many advantages,including its high sensitivity,fidelity,and specificity.Selecting a satisfactory internal reference gene is crucial for obtaining precise gene expression results in qRT-PCR analyses.In this study,the transcriptomic data of 2 potato varieties were screened for housekeeping genes with stable expression patterns.A total of 77 putative genes were selected,which were highly and stably expressed.Then,qRT-PCR analyses were performed to examine the expression levels of these 77 candidate reference genes in various potato tissues,including leaves,flowers,stolons,and tubers.Gene expression was represented by analyzing the Ct values at given threshold.Through geNorm and NormFinder program analyses,10 candidate genes with the most stable expression patterns were obtained,including RPL19,RPS15,RPS9,EF1α,TrxP1,RPS8,NTF,CAM,AACM,and RPS28.Moreover,through the comprehensive analyses of 4 statistical algorithms(i.e.,geNorm,NormFinder,BestKeeper,and RefFinder),results indicated that the most appropriate internal reference genes were RPL19 and EF1α.The obtained stable reference genes will contribute to future qRT-PCR analyses on potato tissue-related gene expression. | Gang Li Yao Zhou Yaqi Zhao Yaxue Liu Yuwei Ke Xiaoqing Jin Haoli Ma | 2020 | Phyton-International Journal of Experimental Botany2020，89，2： | 0 |
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