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| 1 | Characterization of Soil Quality Under Vegetable Production Along an Urban-Rural Gradient显示文摘Human activity and urbanization result in urban-rural environmental gradients. Understanding effect of the gradients on soil properties is necessary for management of the soils around urban areas. In this study, soil quality of some vegetable fields was characterized along an urban-rural gradient in Shaoxing County, Zhejiang Province. Fifteen soil physical and chemical properties were evaluated by using principal component analysis.Results showed that there was a great variation in the soil quality along the gradient. From rural to urban zones, soil organic matter, water-stable aggregates, cation exchangeable capacity (CEC), total N and P, and available K increased, whereas soil pH value decreased. In addition, Pb, Cu, Ni, Co, Zn and Cr in the soils tended to be accumulated toward the urban zone. Sequential chemical extraction showed that mobility of all the heavy metals in the soils tended to increase from the rural to the urban zones. The variation of soil properties accounted for by the first principal component was significantly explained by the difference in application rates of municipal wastes. | ZHANG MINGKUI, WANG MEIQING, LIU XINGMEI, JIANG HONG and XU JIANMINGCollege of Resource and Environmental Sciences, Zhejiang University, Hangzhou 310029 (China) | 2003 | Pedosphere2003，13，2： | 54 |
| 2 | Exploration of the formation mechanism and source attribution of ambient ozone in Chongqing with an observation-based model显示文摘An intensive field campaign was conducted in Chongqing during the summer of 2015 to explore the formation mechanisms of ozone pollution. The sources of ozone, the local production rates, and the controlling factors, as well as key species of volatile organic compounds(VOCs), were quantified by integrating a local ozone budget analysis, calculations of the relative incremental reactivity, and an empirical kinetic model approach. It was found that the potential for rapid local ozone formation exists in Chongqing. During ozone pollution episodes, the ozone production rates were found to be high at the upwind station Nan Quan, the urban station Chao Zhan, and the downwind station Jin-Yun Shan. The average local ozone production rate was 30×10^(-9) V/V h^(-1) and the daily integration of the produced ozone was greater than 180×10^(-9) V/V. High ozone concentrations were associated with urban and downwind air masses. At most sites, the local ozone production was VOC-limited and the key species were aromatics and alkene, which originated mainly from vehicles and solvent usage. In addition, the air masses at the northwestern rural sites were NO_x-limited and the local ozone production rates were significantly higher during the pollution episodes due to the increased NOx concentrations. In summary, the ozone abatement strategies of Chongqing should be focused on the mitigation of VOCs. Nevertheless, a reduction in NO_x is also beneficial for reducing the regional ozone peak values in Chongqing and the surrounding areas. | SU Rong LU KeDing YU JiaYan TAN ZhaoFeng JIANG MeiQing LI Jing XIE ShaoDong WU YuSheng ZENG LiMin ZHAI ChongZhi ZHANG YuanHang | 2018 | Science China Earth Sciences2018，61，1： | 24 |
| 3 | Effect of active oxygen on the performance of Pt/CeO2 catalysts for CO oxidation显示文摘This study was focused on the influence of active oxygen on the performance of Pt/CeO_2 catalysts for CO oxidation. A series of CeO_2 supports with different contents of active oxygen were obtained by adding surfactant at different synthesis steps. 0.25 wt% Pt was loaded on these CeO_2 supports by incipientwetness impregnation methods. The catalysts were characterized by N2 adsorption, X-ray diffraction(XRD), high-resolution transmission electron microscopy(HRTEM), H_2 temperature-programmed reduction(H_2-TPR), dynamic oxygen storage capacity(DOSC) and in-situ DRIFTS technologies. For S-f supports, the surfactant was added into the solution before spray-drying in the synthesis process, which facilitates more active oxygen formation on the surface of CeO_2. After loading Pt, the more active oxygen on CeO_2 contributes to dispersing Pt species and enhancing the CO oxidation activity. As for the aged samples,Pt-R-h shows the highest activity above 190 ℃ because of the presence of more partly oxidized Pt^(δ+) species. Thus the activity is also influenced by the states of Pt and the Pt^(δ+) species may contribute to the high activity at elevated temperature. | Anbin Zhou Jun Wang Hui Wang Hang Li Jianqiang Wang Meiqing Shen | 2018 | Journal of Rare Earths2018，36，3： | 16 |
| 4 | Estrogenic activities of two synthetic pyrethroids and their metabolites显示文摘Synthetic pyrethroids(SPs) are among the most common pesticides in current use,and so far,several SPs have been assessed for their potential estrogenicities by various methods.Previous studies have shown that the estrogenicities partly come from their metabolites.Although considerable information is available with respect to the metabolism and environmental degradation of SPs,little is known about the estrogenicities of the metabolites.In this study,permethrin(PM) and β-cypermethrin(CP),as well as their metabolites(3-phenoxybenzoic alcohol(PBCOH),3-phenoxybenzaldehyde(PBCHO) and 3-phenoxybenzoic acid(PBCOOH) were evaluated for their estrogenic activities in the MCF-7 human breast carcinoma cell line.In the MCF-7 cell proliferation assay,PM and CP exhibited significant estrogenic activities at 10-7 mol/L,comparable to 17β-estradiol(E2 ) of 10-9 mol/L,with the relative proliferative effect ratios of 55.4% and 56.3%,respectively.The real-time quantitative polymerase chain reaction(qRT-PCR) results confirmed the estrogenicities of PM and CP with significant alteration of pS2 and ERα mRNA levels observed at 10-6 mol/L.For the three major metabolites,PBCOH and PBCOOH exhibited estrogenic activities in all assays,while no significant estrogenic responses was observed for PBCHO compared to the vehicle control.In particular,PBCOH had even slightly stronger estrogenic activity than its parent compounds,indicating that metabolism may be one of the reasons for the estrogenicities of the SPs.Given the widespread use of SPs,the toxicological effects of parent compounds and their metabolites should be taken into consideration in the risk assessment of SPs. | Meiqing Jin Ling Li Chao Xu Yuezhong Wen Meirong Zhao | 2010 | Journal of Environmental Sciences2010，22，2： | 13 |
| 5 | Effects of Na+on Cu/SAPO-34 for ammonia selective catalytic reduction显示文摘Copper-exchanged chabazite(Cu/CHA) catalysts have been found to be affected by alkali metal and alkaline earth ions. However, the effects of Na^+ ions on Cu/SAPO-34 for ammonia selective catalytic reduction(NH_3-SCR) are still unclear. In order to investigate the mechanism, five samples with various Na contents were synthesized and characterized. It was observed that the introduced Na^+ ion-exchanges with H+and Cu^(2+)of Cu/SAPO-34. The exchange of H+is easier than that of isolated Cu^(2+). The exchanged Cu^(2+)ions aggregate and form 'CuAl_2O_4-like' species.The NH_3-SCR activity of Cu/SAPO-34 decreases with increasing Na content, and the loss of isolated Cu^(2+)and acid sites is responsible for the activity loss. | Can Wang Chen Wang Jun Wang Jianqiang Wang Meiqing Shen Wei Li | 2018 | Journal of Environmental Sciences2018，30，8： | 10 |
| 6 | Removal of heavy metal ions from aqueous solution using red loess as an adsorbent显示文摘The adsorption behaviors of heavy metals onto novel low-cost adsorbent,red loess,were investigated.Red loess was characterized by X-ray diffraction,scanning electron microscopy and Fourier transform infrared spectra.The results indicated that red loess mainly consisted of silicate,ferric and aluminum oxides.Solution pH,adsorbent dosage,initial metal concentration,contact time and temperature significantly influenced the efficiency of heavy metals removal.The adsorption reached equilibrium at 4 hr,and the experimental equilibrium data were fitted to Langmuir monolayer adsorption model.The adsorption of Cu(II) and Zn(II) onto red loess was endothermic,while the adsorption of Pb(II) was exothermic.The maximum adsorption capacities of red loess for Pb(II),Cu(II) and Zn(II) were estimated to be 113.6,34.2 and 17.5 mg/g,respectively at 25°C and pH 6.The maximum removal efficiencies were 100% for Pb(II) at pH 7,100% for Cu(II) at pH 8,and 80% for Zn(II) at pH 8.The used adsorbents were readily regenerated using dilute HCl solution,indicating that red loess has a high reusability.All the above results demonstrated that red loess could be used as a possible alternative low-cost adsorbent for the removal of heavy metals from aqueous solution. | Shengtao Xing Meiqing Zhao Zichuan Ma | 2011 | Journal of Environmental Sciences2011，23，9： | 9 |
| 7 | An iterative algorithm for solving ill-conditioned linear least squares problems显示文摘Linear Least Squares(LLS) problems are particularly difficult to solve because they are frequently ill-conditioned, and involve large quantities of data. Ill-conditioned LLS problems are commonly seen in mathematics and geosciences, where regularization algorithms are employed to seek optimal solutions. For many problems, even with the use of regularization algorithms it may be impossible to obtain an accurate solution. Riley and Golub suggested an iterative scheme for solving LLS problems. For the early iteration algorithm, it is difficult to improve the well-conditioned perturbed matrix and accelerate the convergence at the same time. Aiming at this problem, self-adaptive iteration algorithm(SAIA) is proposed in this paper for solving severe ill-conditioned LLS problems. The algorithm is different from other popular algorithms proposed in recent references. It avoids matrix inverse by using Cholesky decomposition, and tunes the perturbation parameter according to the rate of residual error decline in the iterative process. Example shows that the algorithm can greatly reduce iteration times, accelerate the convergence,and also greatly enhance the computation accuracy. | Deng Xingsheng Yin Liangbo Peng Sichun Ding Meiqing | 2015 | Geodesy and Geodynamics2015，6，6： | 8 |
| 8 | Active manganese oxide on MnOx-CeO2 catalysts for low-temperature NO oxidation:Characterization and kinetics study显示文摘MnO_x-CeO_2 catalysts were synthesized to investigate the active sites for NO oxidation by varying the calcination temperature. XRD and TEM results showed that cubic CeO_2 and amorphous MnO_x existed in MnO_x-CeO_2 catalysts. High temperature calcination caused the sintering of amorphous MnO_x and transforming to bulk crystalline Mn_2O_3, H_2-TPR and XPS results suggested the valence of Mn in MnO_x-CeO_2 was higher than pure MnO_x, and decreased with the increasing calcination temperature, The turnover frequency(TOF) was calculated based on the initial reducibility according to H_2-TPR quantitation and kinetic study. The TOF results indicated that the initial reducibility of amorphous MnO_x with high valence manganese ions was equivalent to the active sites for NO oxidation. It can be inferred that the amorphous MnO_x plays a key role in low-temperature NO oxidation. | Lingkun Meng Jun Wang Zhihui Sun Jinxin Zhu Hang Li Jianqiang Wang Meiqing Shen | 2018 | Journal of Rare Earths2018，36，2： | 7 |
| 9 | Novel pathogenesis: regulation of apoptosis by Apelin/APJ system显示文摘Apelin 是内长的肽 APJ 受体,当 APJ 是 G 联合蛋白质的受体家庭的一个成员时。最近的证据强烈建议那个 Apelin/APJ 系统通过不同信号小径在各种各样的疾病影响 apoptosis。在这评论,我们讨论 Apelin/APJ 系统由禁止 apoptosis 的可能的机制,包括 phosphatidylinositol-3-kinase (PI3K )/Akt, ERK1/2,发信号的 caspase,和 autophagy 小径。我们也在心肌的 ischemia-reperfusion (I/R ) 在 apoptosis 总结 Apelin/APJ 系统的角色损害,肺的动脉高血压,网膜的 neovascular 疾病,尖锐肾的损害,骨胳的动态平衡,和胃肠的疾病。Apelin/APJ 系统减少心肌的梗塞尺寸并且由禁止 cardiomyocytes apoptosis 减轻心肌的 I/R 损害。然而, Apelin/APJ 系统经由增加 apoptosis 改进肺的动脉高血压。Apelin/APJ 系统由堵住 apoptosis 施加 neuroprotective 效果并且由压制 apoptosis 参予网膜的 neovascular 疾病的恢复。Apelin/APJ 系统也对尖锐肾的损害显示出 anti-apoptotic 效果并且在调整骨胳的动态平衡起一个作用。在胃肠的疾病, Apelin/APJ 系统由调整 apoptosis 在胃肠的 cytoprotection 起一个潜在的生理的作用。我们希望 Apelin/APJ 系统的更好的理解将帮助发现新疾病致病并且为各种各样的疾病发现 Apelin/APJ 系统必需品的可能的治疗学的目标。 | Jiaqi Liu Meiqing Liu Linxi Chen | 2017 | Acta Biochimica et Biophysica Sinica2017，49，6： | 7 |
| 10 | LncRNA TUG1 promotes cisplatin resistance in esophageal squamous cell carcinoma cells by regulating Nrf2显示文摘Esophageal squamous cell carcinoma(ESCC)is a common malignancy with poor prognosis.The drug resistance compromises the efficacy of chemotherapy for ESCC.Long non-coding RNA taurine upregulated gene 1(TUG1)has been identified as a promoter of cancer progression and chemotherapy resistance in many malignancies.However,the exact role of TUG1 in ESCC chemotherapy resistance remains unclear.In this study,we showed that TUG1 expression in TE-1-derived cisplatin(DDP)-resistant(TE-1/DDP)cells was higher than that in TE-1 cells.Furthermore,TUG1 promoted DDP resistance in TE-1 and TE-1/DDP cells by promoting cell proliferation,suppressing cell apoptosis,and elevating protein expression of the classical multi-drug resistance-related P-gp.In contrast,TUG1 knockdown exerted an opposite effect.Mechanistically,RNA pull-down and RNA immunoprecipitation assays confirmed that TUG1 directly bound to nuclear factor(erythroid-derived 2)-like 2(Nrf2)protein and elevated Nrf2 protein expression.Moreover,Nrf2-neutralizing antibody effectively reversed the TUG1 overexpression-mediated promotion of ESCC cell resistance to DDP.In conclusion,our findings demonstrated that TUG1 promoted ESCC cell resistance to DDP,at least in part,through upregulating Nrf2. | Zhenghua Zhang Ran Xiong Caiwei Li Meiqing Xu Mingfa Guo | 2019 | Acta Biochimica et Biophysica Sinica2019，51，8： | 7 |
| 11 | Analysis of trace mercury in water by solid phase extraction using dithizone modified nanometer titanium dioxide and cold vapor atomic absorption spectrometry显示文摘A new method for analysis of trace mercury in water samples was developed, based on the combination of preconcentration/separation using dithizone-modified nanometer titanium dioxide (TiO2) as a solid phase extractant and determination by cold vapor atomic adsorption spectrometry (CVAAS). Dithizone was dissolved with alcohol and loaded on the surface of nano-sized TiO2 powders by stirring. The static adsorption behavior of Hg2+on the dithizone-modified nanoparticles was investigated in detail. It was found that excellent adsorption ratio for Hg2+ could be obtained in the pH range of 7-8 with an oscillation time of 15 min, and a 5 mL of 3.5 molL1 HCl solution could quantitatively elute Hg2+ from nanometer TiO2 powder. Common coexisting ions caused no obvious influence on the determination of mercury. The mechanisms for the adsorption and desorption were discussed. The detection limit (3σ) for Hg2+ was calculated to be 5 ngL1. The proposed method was applied to the determination of Hg2+ in a mineral water sample and a Zhujiang River water sample. By the standard addition method, the average recoveries were found to be 94.4%-108.3% with RSD (n = 5) of 2.9%-3.5%. | MA Xiaoguo HUANG Bei CHENG Meiqing | 2007 | Rare Metals2007，26，6： | 5 |
| 12 | Antioxidant effect of apolipoprotein A-I on high-fat diet-induced non-alcoholic fatty liver disease in rabbits显示文摘非酒精的脂肪肝疾病(NAFLD ) 是包含肝畸形的一个系列的一个逐渐地公认的条件。氧化压力和类脂化合物 peroxidation 是在 NAFLD 的关键 pathophysiological 机制,这被建议了。尽管 apolipoprotein A-I 的抗氧化剂效果(apoA -- 我) 被报导了,它对 NAFLD 的影响没被报导。这研究的目的是决定是否 apoA -- 我能改进在兔子通过它的抗氧化剂行动与高脂肪的导致食谱的 NAFLD 联系的生物化学、组织学的畸形。肝损坏被肝的系数评估,肝的类脂化合物试金,肝象肝节染色的 hematoxylineosin 一样的明显的畸形。类脂化合物 peroxidation 被测量 malondialdehyde (MDA ) 估计在肝的水平。氧化应力被测量 superoxide 估计 dismutase (草皮) ,谷胱甘肽 peroxidase (GPx ) ,和可诱导的氮的氧化物 synthase (iNOS ) 在浆液和肝的活动。另外,草皮, GPx,和过氧化氢酶(猫) 的 mRNA 表情层次被即时量的聚合酶链反应方法决定。结果显示出那 apoA --(20 或 40 mg/kg/w ) 我在减少全部的胆固醇, triglyceride,低密度的脂蛋白胆固醇,和 MDA 在高脂肪的食谱兔子铺平的肝的脂肪变性,发炎,肝的系数,和肝是有效的。另外, apoA -- 当在浆液和肝减少 iNOS 活动时,我增加了草皮和 GPx 活动。而且, apoA -- 我显著地在肝增加了草皮, GPx,和猫的 mRNA 表示层次。这研究显示出那 apoA -- 我在一本高脂肪的食谱导致的兔子对脂肪肝疾病施加了保护的效果,可能通过它的抗氧化剂行动。 | Weina Wang Wei Zhou Baolong Wang Haiyan Zhu Li Ye Meiqing Feng | 2013 | Acta Biochimica et Biophysica Sinica2013，45，2： | 5 |
| 13 | Phosphine production in anaerobic wastewater treatment under tetracycline antibiotic pressure显示文摘The influence of tetracycline(TC) antibiotics on phosphine(PH_3) production in the anaerobic wastewater treatment was studied. A lab-scale anaerobic baffled reactor with three compartments was employed to simulate this process. The reactor was operated in a TC-absence wastewater and 250 μg/L TC-presence wastewater for three months after a start-up period,respectively. The responses of p H, oxidation–reduction potential(ORP), chemical oxygen demand(COD), total phosphorus(TP), enzymes activity(dehydrogenase and acid phosphatase),and microbial community were investigated to reveal the effect of TC on PH_3 production.Results suggested that the dehydrogenase(DH) activity, acid phosphatase(ACP) activity and COD have positive relationship with PH_3 production, while p H, ORP level and the TP in liquid phase have negative relationship with PH_3 production. With prolonged TC exposure, decrease in p H and increase in DH activity are beneficial to PH_3 production, while decrease in COD and ACP activity are not the limiting factors for PH_3 production. | Meiqing Lu Xiaojun Niu Weiyi Chen Zhu Liang Sheng You Xiaohong Gu | 2018 | Journal of Environmental Sciences2018，30，7： | 5 |
| 14 | The spatial variation of soil bacterial community assembly processes affects the accuracy of source tracking in ten major Chinese cities显示文摘Urban soils harbor billions of bacterial cells and millions of species.However,the distribution patterns and assembly processes of bacterial communities remain largely uncharacterized in urban soils.It is also unknown if we can use the bacteria to track soil sources to certain cities and districts.Here,Illumina MiSeq sequencing was used to survey soil bacterial communities from 529 random plots spanning 61 districts and 10 major cities in China.Over a 3,000 km range,community similarity declined with increasing geographic distance(Mantel r=0.62),and community composition was clustered by city(R^(2)=0.50).Within cities(<100 km),the aforementioned biogeographic patterns were weakened.Process analysis showed that homogenizing dispersal and dispersal limitation dominated soil bacterial assembly at small and large spatial scales,respectively.Accordingly,the probabilities of accurately tracking random soil sources to certain cities and districts were 90.0% and 66.7%,respectively.When the tested samples originated from cities that were more than 1,265 km apart,the soil sources could be identified with nearly 100% accuracy.Overall,this study demonstrates the strong distance-decay relationship and the clear geographic zoning of urban soil bacterial communities among cities.The varied importance of different community assembly processes at multiple spatial scales strongly affects the accuracy of microbial source tracking. | Teng Yang Yu Shi Jun Zhu Chang Zhao Jianmei Wang Zhiyong Liu Xiao Fu Xu Liu Jiangwei Yan Meiqing Yuan Haiyan Chu | 2021 | Science China(Life Sciences)2021，64，9： | 4 |
| 15 | Research on Ce-Zr compounds on modifying γ-alumina washcoat on FeCrAl foils显示文摘Ce-Zr compounds such as Ce0.68Zr0.32O2 solid solution, Ce/Zr nitrate and CeO2/ZrO2 were added into γ-alumina-based slurries, which were then loaded on FeCrAl foils pretreated at 950°C and 1100°C. The microstructures and adhesion performance between the substrates and the washcoats were measured by SEM, BET surface area, ultrasonic vi- bration and thermal shock test. The results show that the addition of Ce0.68Zr0.32O2 solid solution, Ce/Zr nitrate and CeO2/ZrO2 into the slurries can improve γ-Al2O3-based washcoat adhesion on FeCrAl foils. Furthermore, ceria-zirconia solid solution increases the adhesion of the washcoat on the surface of an FeCrAl foil than the two others. The specific sur- face area of this washcoat remains about 43-45 m2/g and the weight loss is below 4.0% even after aging test of 10% steam-containing air at 1050°C for 20 h. | HUANG Ying SHEN Meiqing WANG Jun JIA Liwei | 2005 | Rare Metals2005，24，4： | 4 |
| 16 | Human apolipoprotein A-I exerts a prophylactic effect on high-fat diet-induced atherosclerosis via inflammation inhibition in a rabbit model显示文摘Apolipoprotein A-I (apoA -- 我) 是高密度的脂蛋白的主要功能的蛋白质部分。人的 apoA 的预防效果和机制 -- 我在动脉粥样硬化上(作为) 被调查在一高脂肪象兔子模型导致食谱。兔子与 apoA 被注射 -- 我每周一次当喂时为 20 个星期的高脂肪的饮食。我们的结果显示出那 apoA -- 我能提起高密度的脂蛋白胆固醇的浆液水平并且类脂化合物总数胆固醇, triglyceride,和低密度的脂蛋白胆固醇减少那些在作为兔子。减少的大动脉的匾区域和大动脉的损害度被染色的油红 O 也观察并且他在 apoA-I-treated 染色高脂肪象兔子导致食谱。进一步的学习阐明了那 apoA -- 我能包括细胞间的粘附分子的一些煽动性的调停人的表示打的下面调整 1,脉管的粘附 molecule-1 (VCAM-1 ) ,单核白血球 chemoattractant protein-1,肿瘤坏死因素 -- , interleukin-6 (IL-6 ) ,和在浆液和主动脉的 C 反应的蛋白质作为兔子。另外,即时量的 RT-PCR 分析证明 apoA --我注入减少了二个 支持inflammatory 分子的 mRNA 层次,即原子因素 kappa B ( NF-B )和 cyclooxygenase-2 ( COX-2 ),在主动脉作为兔子,它在 endothelial VCAM-1 和 IL-6 mRNA 抄写与伴随物减小被联系。一起,我们的结果支持 atheroprotective 和 apoA 的预防角色 -- 我可以与它的反煽动性的效果在 vivo,和这项活动被相关。 | Jiyang Li Weina Wang Lei Han Meiqing Feng Hui Lu Li Yang Xiangxiang Hu Si Shi Shanshan Jiang Qian Wang Li Ye | 2017 | Acta Biochimica et Biophysica Sinica2017，49，2： | 3 |
| 17 | Possible negative influences of increasing content of cerium on activity and hydrothermal stability of Rh/ceria-zirconia three-way catalysts显示文摘The activity and hydrothermal stability of the Rh/Ce_(x)Zr_(1-x)O_(2)(x=0,0.05,0.3,0.5) model three-way catalysts for gasoline vehicle emissions control were investigated in this work.Among the Rh/Ce_(x)Zr_(1-x)O_(2) samples with different Ce/Zr ratios,the Rh/ZrO_(2) sample exhibits a significantly better activity and hydrothermal stability than the rest of the samples.The impacts of having more Ce components in the Rh/Ce_(x)Zr_(1-x)O_(2) catalysts are associated with the strong Rh-O-Ce interaction that tends to over stabilize the rhodium species.A significant amount of such rhodium atoms can be found in the bulk of the support oxides after a hydrothermal aging at 1050℃ with 10% H_(2)O in air for 12 h.Differently,the sintering of rhodium on the surface of Rh/ZrO_(2) catalysts is the main reason for the catalyst deactivation during the hydrothermal aging.These findings provide an example where high dispersion of supported metal induced by strong metal-support interactions does not necessarily lead to high catalytic activity. | Tianming Huang Meiqing Shen Guanghao Cheng Yunhao Wang Jianqiang Wang Wei Li Se HOh Gongshin Qi Ming Yang Jun Wang | 2021 | Journal of Rare Earths2021，39，7： | 3 |
| 18 | Preparation of Fe_x Ce_(1-x) O_y solid solution and its application in Pd-only three-way catalysts显示文摘FeO x-CeO 2 mixed oxides with increasing Fe/(Ce+Fe) atomic ratio(1-20 mol%) were prepared by sol-gel method and characterized by X-ray powder diffraction(XRD),Brunauer-Emmett-Teller(BET) and Hydrogen temperature-programmed reduction(H 2-TPR) techniques.The dynamic oxygen storage capacity(DOSC) was investigated by mass spectrometry with CO/O 2 transient pulses.The powder XRD data following Rietveld refinement revealed that the solubility limit of iron oxides in the CeO 2 was 5 mol% based on Fe/(Ce+Fe).The lattice parameters experienced a decrease followed by an increase due to the influence of the maximum solubility limit of iron oxides in the CeO 2.TPR analysis revealed that Fe introduction into ceria strongly modified the textual and structural properties,which influenced the oxygen handling properties.DOSC results revealed that Ce-based materials containing Fe oxides with multiple valences contribute to the majority of DOSC.The kinetic analysis indicated that the calculated apparent kinetic parameters obey the compensation effect.The three-way catalytic performance for Pd-only catalysts based on the Fe doping support exhibited the redundant iron species separated out of the CeO 2 and interacted with the ceria and Pd species on the surface,which seriously influenced the catalytic properties,especially after hydrothermal aging treatment. | Jianqiang Wang Meiqing Shen Jun Wang Mingshan Cui Jidong Gao Jie Ma Shuangxi Liu | 2012 | Journal of Environmental Sciences2012，24，4： | 3 |
| 19 | Strategic design and fabrication of MXenes-Ti_(3)CNCl_(2)@CoS_(2) core-shell nanostructure for high-efficiency hydrogen evolution显示文摘CoS_(2) is considered to be a promising electrocatalyst for hydrogen evolution reaction(HER).However,its further widespread applications are hampered by the unsatisfactory activity due to relatively high chemisorption energy for hydrogen atom.Herein,theoretical predictions of first-principles calculations reveal that the introduction of a Cl-terminated MXenes-Ti_(3)CNCl_(2) can significantly reduce the HER potential of CoS_(2)-based materials and the Ti_(3)CNCl_(2)@CoS_(2) core–shell nanostructure has Gibbs free energy of hydrogen adsorption(|ΔGH|)close to zero,much lower than that of the pristine CoS_(2) and Ti_(3)CNCl_(2).Inspired by the theoretical predictions,we have successfully fabricated a unique Ti_(3)CNCl_(2)@CoS_(2) core–shell nanostructure by ingeniously coupling CoS_(2) with a Cl-terminated MXenes-Ti_(3)CNCl_(2).Interface-charge transfer between CoS_(2) and Ti_(3)CNCl_(2) results in a higher degree of electronic localization and a formation of chemical bonding.Thus,the Ti_(3)CNCl_(2)@CoS_(2) core–shell nanostructure achieves a significant enhancement in HER activity compared to pristine CoS_(2) and Ti_(3)CNCl_(2).Theoretical calculations further confirm that the partial density of states of CoS_(2) after hybridization becomes more non-localized,and easier to interact with hydrogen ions,thus boosting HER performance.In this work,the success of oriented experimental fabrication of high-efficiency Ti_(3)CNCl_(2)@CoS_(2) electrocatalysts guided by theoretical predictions provides a powerful lead for the further strategic design and fabrication of efficient HER electrocatalysts. | Jizhou Jiang Saishuai Bai Meiqing Yang Jing Zou Neng Li Jiahe Peng Haitao Wang Kun Xiang Song Liu Tianyou Zhai | 2022 | Nano Research2022，15，7： | 2 |
| 20 | Inhibitory effect of apolipoprotein A-I on matrix metalloproteinase-2 expression in vivo and in vitro显示文摘在现在的学习,我们调查了 apolipoprotein A-I 的效果(apoA -- 我) 在矩阵 metalloproteinase-2 (MMP-2 ) 上在 vivo 并且在 vitro 的表示。首先,我们检测了 apoA 的效果 -- 我在主动脉 MMP-2 上,激活 proliferator 的受体 /(PPAR /) , cyclooxygenase-2 (COX-2 ) ,和在动脉粥样硬化患者兔子的原子因素 kappa B (NF-B ) 表情用 immunohistochemical 方法建模的 peroxisome。结果证明 MMP-2, COX-2,和 NF-B 的表情在与 apoA 对待的动脉粥样硬化患者兔子的主动脉被减少 -- 我,当 PPAR / 表示被增加时。然后,我们选择了重要发炎房间,在 vitro 证明那些效果的巨噬细胞。巨噬细胞被划分成六个组并且与 apoA 的不同集中对待 -- 我, MMP-2 的 mRNA 表情, PPAR / ,和 COX-2 然后用 PPAR 的反向抄写的聚合酶链反应,和蛋白质表示被决定, NF-B 被西方的污点分析检测。在有教养的上层清液的 MMP-2 和 PPAR 的层次用连接酶的 immunosorbent 试金被决定。有趣地,在里面 vitro 结果类似于结果在里面 vivo 学习。在有 apoA 的孵化以后 -- 我为 24 h, MMP-2 的表情, COX-2,和 NF-B 被减少,当 PPAR / 表示被增加时。在他们在在 vivo 并且在 vitro 做匾马厩的进程的特别角色的考虑,我们推测 apoA 的禁止的效果 -- 我可以与 apoA 的效果在 MMP-2 表示上有一种靠近的关系 -- 我在 PPAR / , COX-2,和 NF-B 表达式上。尽管进一步的研究被需要澄清这些效果的内在的机制,我们的调查结果提供新奇卓见进 apoA 的反动脉粥样硬化患者匾破裂效果 -- 我。 | Weina Wang Xunlong Shi Yuan Yuan Haiyan Zhu Wei Zhou Hai Huang Meiqing Feng | 2013 | Acta Biochimica et Biophysica Sinica2013，45，3： | 2 |
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