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| 1 | A comparative study of Mn/CeO_2,Mn/ZrO_2 and Mn/Ce-ZrO_2 for low temperature selective catalytic reduction of NO with NH_3 in the presence of SO_2 and H_2O显示文摘Ce-ZrO2 is a widely used three-way catalyst support.Because of the large surface area and excellent redox quality,Ce-ZrO2 may have potential application in selective catalytic reduction(SCR) systems.In the present work,Ce-ZrO2 was introduced into a low-temperature SCR system and CeO2 and ZrO2 supports were also introduced to make a contrastive study.Mn/CeO2,Mn/ZrO2 and Mn/Ce-ZrO2 were prepared by impregnating these supports with Mn(NO3)2 solution,and have been characterized by N2-BET,XRD,TPR,TPD,XPS,FT-IR and TG.The activity and resistance to SO2 and H2O of the catalysts were investigated.Mn/Ce-ZrO2 and Mn/CeO2 were proved to have better low-temperature activities than Mn/ZrO2,and yielded 98.6% and 96.8% NO conversion at 180°C,respectively.This is mainly because Mn/Ce-ZrO2 and Mn/CeO2 had higher dispersion of manganese oxides,better redox properties and more weakly adsorbed oxygen species than Mn/ZrO2.In addition,Mn/Ce-ZrO2 showed a good resistance to SO2 and H2O and presented 87.1% NO conversion,even under SO2 and H2O treatment for 6 hours,and the activity of Mn/Ce-ZrO2 was almost restored to its original level after cutting off the injection of SO2 and H2O.This was due to the weak water absorption and weak sulfation process on the surface of the catalyst. | Boxiong Shen Xiaopeng Zhang Hongqing Ma Yan Yao Ting Liu | 2013 | Journal of Environmental Sciences2013，25，4： | 30 |
| 2 | Enhancing the antihepatitis B virus immune response by adefovir dipivoxil and entecavir therapies显示文摘Chronicity of hepatitis B(CHB)infection is characterized by a weak immune response to the virus.Entecavir(ETV)and adefovir dipivoxil(ADV)are effective in suppressing hepatitis B virus(HBV)replication.However,the underlying immune mechanism in the antiviral response of patients treated with nucleoside or nucleotide analogs is not clearly understood.In this study,regulatory T cells(Tregs)and intracellular cytokines,including IL-2,interferon(IFN)-γ,tumor-necrosis factor(TNF)-α and IL-4,were measured prior to and at 12,24,36 and 48 weeks after treatment with ETV or ADV.The cytokines were increased from 24 to 48 weeks after treatment.Higher levels of Th1 cytokines were observed with ETV(n=29)versus ADV(n=28)treatment.By contrast,the numbers of Tregs in both groups were decreased.The altered cytokine profile and cellular component was accompanied by a decrease in HBV DNA levels in both groups,which may contribute to their therapeutic effect in CHB infection.Our findings suggest that the antiviral effect of the drugs may be attributed not only to their direct effect on virus suppression but also to their immunoregulatory capabilities. | Yanfang Jiang Wanyu Li Lei Yu Jingjing Liu Guijie Xin Hongqing Yan Pinghui Sun Hong Zhang Damo Xu Junqi Niu | 2011 | Cellular & Molecular Immunology2011，8，1： | 16 |
| 3 | Mn-CeOx/Ti-PILCs for selective catalytic reduction of NO with NH_3 at low temperature显示文摘Titanium-pillared clays (Ti-PILCs) were obtained by different ways from TiCl4, Ti(OC3H7)4 and TiOSO4, respectively. Mn-CeOx/Ti- PILCs were then prepared and their activities of selective catalytic reduction (SCR) of NO with NH3 at low-temperature were evaluated. Mn-CeOx/Ti-PILCs were characterized by X-ray diffraction, N2 adsorption, Fourier transform infrared spectroscopy, thermal analysis, temperature-programmed desorption of ammonia and H2-temperature-programmed reduction. It was found that Ti-pillar tend to be helpful for the enlargement of surface area, pore volume, acidity and the enhancement of thermal stability for Mn-CeOx/Ti-PILCs. Mn- CeOx/Ti-PILCs catalysts were active for the SCR of NO. Among three resultant Mn-CeOx/Ti-PILCs, the catalyst from TiOSO4 showed the highest activity with 98% NO conversion at 220°C, it also exhibited good resistance to H2O and SO2 in flue gas. The catalyst from TiCl4 exhibited the lowest activity due to the unsuccessful pillaring process. | Boxiong Shen Hongqing Ma Yan Yao | 2012 | Journal of Environmental Sciences2012，24，3： | 16 |
| 4 | Determination of cloud-top height from stereoscopic observation显示文摘A new and accurate method is presented based on the cloud movement (height and position), the spherical and plane triangular relationships of the spacecraft, the center of the earth, the projected-cloud and the true-cloud for determination of cloud-top height and position. Synthetic stereo images that have spatial resolution of 1.25 km from a single satellite are used to test this method. It is demonstrated that the cloud-top structure can be determined from the stereoscopic measurements of geo-synchronous satellite with vertical accuracy of approximately 500 m. The vertical accuracy can be better with lower orbiters. | WANG Hongqing , LU Shenghui, ZHANG Yan and TAO Zuyu(Department of Atmospheric Science/School of Physics, Peking University, Beijing 100871, China) | 2002 | Progress in Natural Science:Materials International2002，12，9： | 9 |
| 5 | Energy-efficient longitudinal driving strategy for intelligent vehicles on urban roads显示文摘Energy and environmental problems brought by automobiles are becoming more and more prominent. One promising way to solve these problems is to improve the energy efficiency of vehicles. The energy efficiency of a vehicle is not only related to vehicle performance, but also related to driving behavior. | Hongqing CHU Lulu GUO Yongjun YAN Bingzhao GAO Hong CHEN Ning BIAN | 2019 | Science China(Information Sciences)2019，62，6： | 5 |
| 6 | Backlund Transformation and Exact Solutionsfor (2+1) -dimensional Kolmogoroff- Petrovsky-Piscounov Equation显示文摘Via using the idea of improved homogeneous balance method andwith the aid of MATHEMATICA, Backlund transformation (BT) of (2+1)-dimensionalKolmogoroff-Petrovsky-Piscounov (KPP) equation is derived. Then according to the BT,several families of exact solutions for KPP equation are obtained, Which contain solitonsolutions. (2+1)-dimensional Chaffee-Infante (CI) equation, as the special case of KPPequation, is also considered. | Zhenya YAN Hongqing ZHANG(Institute of Mathematics. Dalian University of Technology. Dalian 116024. China) | 1999 | Communications in Nonlinear Science and Numerical Simulation1999，4，2： | 3 |
| 7 | Symmetry Reductions, Integrability and Solitary Wave Solutions to High-Order Modified Boussinesq Equations with Damping Term显示文摘Both the direct method due to Clarkson and Kruskal and the improved direct method due to Lou are extended to reduce the high-order modified Boussinesq equation with the damping term (HMBEDT) arising in the general Fermi-Pasta-Ulam model. As a result, several types of similarity reductions are obtained. It is easy to show that the nonlinear wave equation is not integrable under the sense of AblowRz's conjecture from the reduction results obtained. In addition, kink-shaped solitary wave solutions, which are of important physical significance, are found for HMBEDT based on the obtained reduction equation. | YAN ZhenYa XIE FuDing ZHANG HongQing | 2001 | Communications in Theoretical Physics2001，，7： | 2 |
| 8 | AUTO-DARBOUX TRANSFORMATION AND EXACT SOLUTIONS OF THE BRUSSELATOR REACTION DIFFUSION MODEL显示文摘Firstly, using the improved homogeneous balance method, an auto-Darboux transformation (ADT) for the Brusselator reaction diffusion model is found. Based on the ADT, several exact solutions are obtained which contain some authors' results known.Secondly, by using a series of transformations, the model is reduced into a nonlinear reaction diffusion equation and then through using sine- cosine method, more exact solutions are found which contain soliton solutions. | YAN Zhenya(闫振亚) ZHANG Hongqing(张鸿庆) | 2001 | Applied Mathematics and Mechanics(English Edition)2001，22，5： | 2 |
| 9 | 2,5-Diformylfuran production by photocatalytic selective oxidation of 5-hydroxymethylfurfural in water using MoS_(2)/CdIn_(2)S_(4) flower-like heterojunctions显示文摘The selective oxidation of 5-hydroxymethylfurfural(HMF) into 2,5-diformylfuran(DFF) is an important reaction for renewable biomass building blocks. Compared with thermal catalytic processes, photocatalytic production of DFF from HMF has attracted tremendous attention. Herein, the MoS_(2)/CdIn_(2)S_(4)(MC)flower-like heterojunctions were prepared and considered as photocatalysts for selective oxidation of HMF into DFF under visible-light irradiation in aqueous solution. Results demonstrated MoS_(2) in MC heterojunction could promote the separation of photoexcited electron-hole pairs, while the amount of MoS_(2) dropping was proved influenced on the photocatalytic performance. 80.93% of DFF selectivity was realized when using 12.5% MC as photocatalyst. In addition, the MC catalyst also showed great potential in transformation of other biomass derived benzyl-and furyl-alcohols. The catalytic mechanism suggested that ·O_(2)^(-) was the decisive active radical for HMF oxidation. Therefore, the MC heterojunction could be applied in photocatalytic conversion of biomass to valuable chemicals under ambient condition. | Qian Zhu Yan Zhuang Hongqing Zhao Peng Zhan Cong Ren Changsheng Su Wenqiang Ren Jiawen Zhang Di Cai Peiyong Qin | 2023 | Chinese Journal of Chemical Engineering2023，54，2： | 2 |
| 10 | A high performance license plate recognition system based on the web technique显示文摘 | Dai Yan Ma Hongqing Liu Jilin | 2001 | IEEE Intelligent Transportation Systems2001，，： | 1 |
| 11 | New explicit and exact travelling wave solutions for a system of variant Boussinesq equations in mathematical physics显示文摘 | Zhenya Yan Hongqing Zhang | 1999 | Physics Letters A1999，，6： | 1 |
| 12 | New explicit and exact travelling wave solutions for a system of variant Boussinesq equation in mathematical physics 显示文摘 | Zhang Hongqing | 1999 | Phys Lett A1999，252，： | 1 |
| 13 | Exact solutions for a family variable coefficientReaction-Duffing equation via the Backlund tranformation显示文摘 | Chen Yong Yan zhenya Zhang Hongqing | 2002 | Theor Math Phys2002，132，1： | 1 |
| 14 | Antiviral Treatment Alters the Frequency of Activating and Inhibitory Receptor-Expressing Natural Killer Cells in Chronic Hepatitis B Virus Infected Patients显示文摘 | Juan Lv Qinglong Jin Haibo Sun Xiumei Chi Xiaoli Hu Hongqing Yan Yu Pan Weihua Xiao Zhigang Tian Jinlin Hou Damo Xu Zhengkun Tu Junqi Niu Alex Kleinjan | 2012 | Mediators of Inflammation2012，，： | 1 |
| 15 | New explicit solitary wave solutions and periodic wave solutions for Whitham-Broer-Kaup equation in shallow water显示文摘 | Yan Zhenya Zhang Hongqing | 2001 | Phys Lett2001，，246： | 1 |
| 16 | Explicit and exact traveling wave solutions of Whitham-Broer-Kaup shallow water equations显示文摘 | Xie Fuding Yan Zhenya Zhang Hongqing | 2001 | Phys Lett A2001，285，12： | 1 |
| 17 | Th1 and Th2 Immune Response in Chronic Hepatitis B Patients during a Long-Term Treatment with Adefovir Dipivoxil显示文摘 | Yanfang Jiang Zhenhua Ma Guijie Xin Hongqing Yan Wanyu Li Huining Xu Chunhai Hao Junqi Niu Pingwei Zhao Dennis Daniel Taub | 2010 | Mediators of Inflammation2010，，： | 1 |
| 18 | A high performance license plate recognition system based on the web technique显示文摘 | Dai Yan Ma Hongqing Liu Jilin Li Langang | 2001 | IEEE Proceedings on Intelligent Transportation Systems2001，，7： | 1 |
| 19 | Explicit and exact travelling wave solutions of Whitham-Broer-Kawp shallow water equation显示文摘 | Xie Fuding Yan Zhenya Zhang Hongqing | 2001 | Physics Letters2001，，： | 1 |
| 20 | Explicit and Exact Solutions for theGeneralized Reaction Duffing Equation显示文摘IntroductionInthesolitontheory,findingmoreefficientmethodplaysanimportantroleinsolvingexactsolutionsofnonlinearevolutionequationsll--4].Thefollowingreactionduffingequationwherea,6,dareallconstants,canbereducedtomanyfamousequations,suchasac4equation.K... | Zhenya YAN and Hongqing ZHANG(Institute of Mathematical Science, Dalian University of Technology, Dalian 116024, China)E-mail: Zhanghq@dlut.edu.cn | 1999 | Communications in Nonlinear Science and Numerical Simulation1999，4，3： | 1 |
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