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| 1 | Photoactivity of titanium dioxide/carbon felt composites prepared with the assistance of supercritical carbon dioxide: Effects of calcination temperature and supercritical conditions显示文摘TiO2-coated carbon felt(TCF)composite catalysts have been prepared via a supercritical treatment of titanium tetraisopropoxide(TTIP)as the precursor.The physical properties of the catalysts were characterized by means of thermogravimetric and differential thermal analysis(TG–DTA),X-ray diffraction(XRD),fluorescence spectroscopy,scanning electron microscopy (SEM),and BET surface areas techniques.The photocatalytic activities of the materials were evaluated using the degradation of Congo red(CR)as a probe reaction.All the composites showed much higher photocatalytic activity than commercial P25 due to significant synergistic effects.Reused TCF retained high photocatalytic activity for degradation of CR.The photocatalytic efficiency in CR degradation was found to be strongly dependent on the TiO2-coating ratio and calcination temperature.A possible mechanism for the enhanced reactivity involves shuttling of electrons from TiO2 particles to the carbon felt(CF)as a result of an optimal arrangement in TCF that stabilizes charge separation and reduces charge recombination.In addition to the significant synergistic effects,the abundant spaces between adjacent carbon fibers allow UV light to penetrate into the felt-like photocatalyst to a considerable depth,so that a three-dimensional environment is available for the photocatalytic reaction. | LI YouJi CHEN Wei LI LeiYong MA MingYuan | 2011 | Science China Chemistry2011，54，3： | 2 |
| 2 | Effect of electroacupuncture at Ximen(PC 4) and Hegu(LI 4) on expression of Akt in rats with myocardial ischemia-reperfusion injury显示文摘OBJECTIVE: To investigate the effect of electroacupuncture(EA) at acupoints on the pericardium meridian on the expression of phosphorylated Akt(p-Akt) protein in rat myocardium after ischemia and reperfusion.METHODS: Seventy Wistar rats were evenly randomized into seven groups: the sham operation group(group A), ischemia-reperfusion model Ⅰgroup(group B), ischemia-reperfusion model Ⅱgroup(group C), EA at Neiguan(PC 6) group(group D), EA at Ximen(PC 4) group(group E), EA at Hegu(LI 4) group(group F), and LY294002 + EA at Neiguan(PC 6) group(group G). All processes were monitored by electrocardiography. In group A, the left anterior descending coronary artery was only threaded without ligation for 100 min. In group B,the left anterior descending coronary artery was ligated for 40 min and reperfused for 60 min. The left anterior descending coronary artery in group C was ligated for 40 min and reperfused for 100 min.Groups D, E, and F received EA for 20 min before undergoing ischemia for 40 min, and then received EA for 20 min before undergoing reperfusion for 60 min. Before modeling, group G was injected with LY294002(0.3 mg/kg) into the tail vein, and then underwent the same intervention as the other EA groups. After reperfusion, myocardial tissue from the left cardiac ventricle was collected to enable Western blot analysis of the p-Akt level, and analysis of electrocardiographic changes.RESULTS: In groups B and C, electrocardiography showed obvious elevation of the ST-segment Ⅱlead(ECG-STⅡ), while the ECG-STⅡvalues were significantly lower in groups D, E, and G(P < 0.01). The p-Akt levels in groups D and E were significantly greater than those in groups B and C(P < 0.01).Compared with all other groups, group G showed a significantly different expression of p-Akt(P < 0.01).CONCLUSION: The expression of p-Akt protein in cardiomyocytes was significantly greater in rats that were injected with LY294002 and received EA at Ximen(PC 4) compared with all other groups.This suggests that EA at Ximen(PC 4) resulted in activation of the phosphoinositide 3-kinase/Akt signaling pathway and phosphorylation of Akt. | Tian Yuefeng Gao Haining Li Leiyong Wang Jun Zhai Chuntao | 2017 | Journal of Traditional Chinese Medicine2017，37，6： | 2 |
| 3 | Performance and stability of yield in response to plant density,year and location in maize hybrids of Northwest China显示文摘Identifying desirable genotypes with the best performance in diverse environments is a perpetual aim of plant breeding,and the interaction between genotype and environment(G×E)always plays a key role.This study was conducted to elucidate the genetic behaviour of different hybrid combinations at various densities in diverse environments.According to a line×tester design,32 hybrid combinations were obtained from 16 inbred individuals crossed with two testers and planted at three locations at three density levels(45,000,67,500 and 90,000 plants ha-1)during 2014-2017.Genotype(G),environment(E)and the interaction of genotype and environment(G×E)significantly affected grain yield at different densities.Increasing planting density enhanced grain yield and improved the efficiency of germplasm screening,where the effect of location on grain yield at different densities was larger than that of year and the GCA was larger than the SCA.Finally,four inbred lines(KB102,KB081,KA105,and KB106)with a high GCA,environmental adaptability,and several combinations using them as parents have been approved in ShannXi Province and National of China.In conclusion,the evaluation of combining ability at multiple densities and locations can effectively screen inbred lines and improve breeding efficiency. | Yuan Dong Zhiqian Feng Ting Li Ali Farhan Xiaokang Tian Yonghui Lao Yinxin Duan Leiyong Si Xinghua Zhang Jiquan Xue Shutu Xu | 2022 | Technology in Agronomy2022，2，1： | 1 |
| 4 | Preparation of Ag-doped TiO 2 nanoparticles by a miniemulsion method and their photoactivity in visible light illuminations显示文摘 | Youji Li Mingyuan Ma Wei Chen Leiyong Li Mengxiong Zen | 2011 | Materials Chemistry and Physics2011，，1： | 1 |
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