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| 1 | Effect of coating modification of cordierite carrier on catalytic performance of supported NiMnO_3 catalysts for VOCs combustion显示文摘NiMnO_3 perovskite catalysts supported on cordierite modified by Ce_xZr_(1-x)O_2 coatings were prepared using impregnation and sol-gel methods for catalytic combustion of single/double component VOCs at different concentrations and GHSV of 15,000 h^(-1), which were characterized by BET, XRD, SEM, FT-IR, H_2-TPR and O_2-TPD. After coating modification, the specific surface area of catalysts is improved obviously.Among the catalysts, the Ce_(0.75)Zr_(0.25)O_2 coating modified NiMnO_3 catalyst exhibits the best catalytic activity for VOCs combustion with 95.6% conversion at 275 ℃ and has stable activity when catalyst is embalmed at 800 ℃. In addition, the catalyst also presents the excellent water-resistant and conversion stability over time-on-stream condition. The reason is that Ce_(0.75)Zr_(0.25)O_2 coating can promote more lattice distortion and defects and smaller crystal size, which improve oxygen transfer capability and dispersion of active component. | Lei Deng Chao Huang Jiawei Kan Bing Li Yingwen Chen Shemin Zhu Shubao Shen | 2018 | Journal of Rare Earths2018,36,3: | 10 |
| 2 | Highly efficient Zr doped-TiO_2/glass fiber photocatalyst and its performance in formaldehyde removal under visible light显示文摘Zr-doped-TiO_2 loaded glass fiber(ZT/GF) composite photocatalysts with different Zr/Ti ratios were prepared with a sol–gel process. Zr4+can replace Ti4+in the TiO_2 lattice, which is conducive to forming the anatase phase and reducing the calcination temperature. The glass fiber carrier was responsible for better dispersion and loading of Zr-doped-TiO_2 particles, improving the applicability of the Zr-doped-TiO_2. The ZT/GF photocatalysts were characterized by X-ray diffraction(XRD), scanning electron microscope(SEM), Fourier transform infrared spectroscopy(FT-IR), ultraviolet–visible spectroscopy(UV–vis) and Barrett–Joyner–Halenda(BJH). The performance of photocatalysts with different loading was evaluated in formaldehyde degradation under visible light at room temperature. ZT/GF0.2exhibited the highest activity, with a formaldehyde removal rate as high as 95.14% being observed, which is better than that of the photocatalyst particles alone. The stability of the catalyst was also tested, and ZT/GF exhibited excellent catalytic performance with 94.38%removal efficiency, even after seven uses. | Chao Huang Yaping Ding Yingwen Chen Peiwen Li Shemin Zhu Shubao Shen | 2017 | Journal of Environmental Sciences2017,29,10: | 6 |
| 3 | Using Airgun Source Signals to Study Regional Wave Velocity Changes before and after the Yunlong M_S5.0 and Yangbi M_S5.1 Earthquakes显示文摘On the basis of the airgun source signals recorded by the stations from January,2016 to June,2017,we use cross-correlation detection technology to obtain the characteristics of the stable phase travel time change of each station.We used the Yunlong MS5.0 and Yangbi MS5.1 earthquakes as samples.According to regional characteristics,13 stations with high signal-to-noise ratios and complete data were selected(including 3 fixed stations and 10 active source stations).They are divided into four regions,and on the basis of the GNSS baseline data,the characteristics of regional wave velocity changes before and after the earthquake are analyzed.The results show that the station phase travel time change and the regional stress characteristics represented by the GNSS baseline data have good correlation in the short-term.Due to different degrees of regional stress,there are differences in the travel time changes of different stations in the four regions.Before the Yunlong MS5.0 and Yangbi MS5.1 earthquakes,with regional stress adjustment,there is an upward trend in the travel time changes of related stations in the adjacent areas of up to 0.02 s.The difference is that there are differences in the time nodes and duration of the travel time anomalies,and there is a reverse descent process after the Yangbi MS5.1 earthquake.There are different degrees of travel time fluctuations in the relevant stations before and after the two earthquakes,but the fluctuation range before and after the earthquake was small.Compared with the water level change of the reservoir,the adjustment of the regional stress is more likely to have a substantial impact on the travel time changes of the relevant stations. | YANG Jianwen LI Lei ZHANG Pengying YE Beng HE Yingwen CHEN Jia CHA Wenjian | 2019 | Earthquake Research in China2019,33,2: | 4 |
| 4 | Acid modified carrier on catalytic oxidation of dichloromethane over CeO_(2)/HZSM-5 catalysts显示文摘In this study,a series of Hydrogen-Zeolite Socony Mobil-5-X(HZSM-5-X) catalysts were prepared by acid modification,then Ce/HZSM-5-X(X=0,0.2,0.4,1.0,2.0) catalysts were prepared by impregnation method.The catalytic performance of the catalysts on dichloromethane(DCM) oxidation was investigated.Through different characterizations,HZSM-5-X exhibit high specific surface area,good redox ability,rich acidity and much suitable acidic site distribution after acid treatment.Among them,Ce/HZSM-5-0.4 shows better catalytic activity with the lowest by-product and the best CO_(2) yield.Its T_(90) is 302℃ and the CO_(2) yield of T_(90) is more than 80 wt%,which demonstrates that the acid modification of carrier plays the positive effect on the catalytic capacity for DCM oxidation. | Mengxiang Li Jing Mo Xuanyu Gu Yue Zhou Mengjie Fan Shubao Shen Yingwen Chen | 2022 | Journal of Rare Earths2022,40,10: | 2 |
| 5 | Conversation Extraction in Dynamic Text Message Stream显示文摘 | Wang Le Jia Yan Chen Yingwen | 2008 | Journal of Computers2008,3,10: | 1 |
| 6 | Enhanced catalytic oxidation of dichloromethane by a surfactant-modified CeO_(2)@TiO_(2) core-shell nanostructured catalyst显示文摘Surfactant-modified CeO_(2)@TiO_(2) core-shell nanostructure catalysts were prepared by coprecipitation with the addition of sodium dodecyl sulfonate(SDS),and their catalytic oxidation of dichloromethane(DCM) was studied.A 90% DCM conversion efficiency is obtained at 300℃ with the CeO_(2)@TiO_(2)SDS catalyst,and its catalytic stability in the 55 h test period is better than that of Ce/TiO_(2) and CeO_(2)@TiO_(2).Based on the characterization of CeO_(2)@TiO_(2)SDS,the dispersion of active components is promoted due to the inhibition of crystal growth with the introduction of SDS.The improvement of surface acidity and redox capacity is beneficial to the enhancement of catalytic activity.The higher adsorbed oxygen content on the surface of the CeO_(2)@TiO_(2)SDS catalyst is responsible for the better catalytic stability.Generally,a novel method was developed to design catalytic oxidation catalysts for the treatment of chlorinated volatile organic compounds in future applications. | Mengjie Fan Qingping Zou Jining Liu Yingwen Chen Jianliang Zhu Shubao Shen | 2023 | Journal of Rare Earths2023,41,7: | 1 |
| 7 | Cost Sharing Based Truthful Spectrum Auction with Collusion-Proof显示文摘Spectrum auction is an important approach of spectrum distribution in cognitive radio networks. However, a single secondary user(SU) probably can't afford the price of spectrum. Multiple SUs grouping together to participate in the auction as a whole is helpful to increase purchasing power. However, SUs could suffer from a new group cheating problem, i.e., parts of users conspire to manipulate the auction by submitting untruthful bids. Existing auction mechanisms were mainly designed to be strategy-proof only for individual user and can't deal with group cheating. In this paper, a novel spectrum auction mechanism called COSTAG(COst Sharing based Truthful Auction with Group-buying) is proposed to address the group cheating problem. COSTAG consists of a grouping rule to perform grouping and a payment rule to determine the market-clearing price in the spectrum auction. Different from single-echelon pricing approach employed in existing works, a multi-echelon pricing strategy is designed to increase the transaction rate and optimize social profit for the auction. Comprehensive theoretical analysis shows that COSTAG can satisfy the crucial economic robustness properties, both individual and group truthfulness. Simulations demonstrate that comparing with existing works, COSTAG can improve the system performance significantly. | Deming Pang Zhigang Deng Gang Hu Yingwen Chen Ming Xu | 2018 | China Communications2018,15,2: | 1 |
| 8 | Bioactive constituents of animal-derived traditional Chinese medicinal materials for breast cancer:opportunities and challenges显示文摘Breast cancer is globally the most common invasive cancer in women and remains one of the leading causes of cancer-related deaths.Surgery,radiotherapy,chemotherapy,immunotherapy,and endocrine therapy are currently the main treatments for this cancer type.However,some breast cancer patients are prone to drug resistance related to chemotherapy or immunotherapy,resulting in limited treatment efficacy.Consequently,traditional Chinese medicinal materials(TCMMs)as natural products have become an attractive source of novel drugs.In this review,we summarized the current knowledge on the active components of animal-derived TCMMs,including Ophiocordyceps sinensis-derived cordycepin,the aqueous and ethanolic extracts of O.sinensis,norcantharidin(NCTD),Chansu,bee venom,deer antlers,Ostrea gigas,and scorpion venom,with reference to marked anti-breast cancer effects due to regulating cell cycle arrest,proliferation,apoptosis,metastasis,and drug resistance.In future studies,the underlying mechanisms for the antitumor effects of these components need to be further investigated by utilizing multi-omics technologies.Furthermore,large-scale clinical trials are necessary to validate the efficacy of bioactive constituents alone or in combination with chemotherapeutic drugs for breast cancer treatment. | Chaochao YU Yi LI Guopeng CHEN Chaoyan WU Xiuping WANG Yingwen ZHANG | 2022 | Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)2022,23,7: | 1 |
| 9 | Genomic analysis,trajectory tracking,and field surveys reveal sources and long-distance dispersal routes of wheat stripe rust pathogen in China显示文摘Identifying sources of phytopathogen inoculum and determining their contributions to disease outbreaks are essential for predicting disease development and establishing control strategies.Puccinia striiformis f.sp.tritici(Pst),the causal agent of wheat stripe rust,is an airborne fungal pathogen with rapid virulence variation that threatens wheat production through its long-distance migration.Because of wide variation in geographic features,climatic conditions,and wheat production systems,Pst sources and related dispersal routes in China are largely unclear.In the present study,we performed genomic analyses of 154 Pst isolates from all major wheat-growing regions in China to determine Pst population structure and diversity.Through trajectory tracking,historical migration studies,genetic introgression analyses,and field surveys,we investigated Pst sources and their contributions to wheat stripe rust epidemics.We identified Longnan,the Himalayan region,and the Guizhou Plateau,which contain the highest population genetic diversities,as the Pst sources in China.Pst from Longnan disseminates mainly to eastern Liupan Mountain,the Sichuan Basin,and eastern Qinghai;that from the Himalayan region spreads mainly to the Sichuan Basin and eastern Qinghai;and that from the Guizhou Plateau migrates mainly to the Sichuan Basin and the Central Plain.These findings improve our current understanding of wheat stripe rust epidemics in China and emphasize the need for managing stripe rust on a national scale. | Yuxiang Li Jichen Dai Taixue Zhang Baotong Wang Siyue Zhang Conghao Wang Jiguang Zhang Qiang Yao Mingju Li Chengyun Li Yuelin Peng Shiqin Cao Gangming Zhan Fei Tao Haifeng Gao Weili Huang Xiaojun Feng Yingwen Bai Zhuoma Qucuo Hongsheng Shang Chong Huang Wancai Liu Jiasui Zhan Xiangming Xu Xianming Chen Zhensheng Kang Xiaoping Hu | 2023 | Plant Communications2023,4,4: | 1 |
| 10 | High yield hydrogen pro- ductian in a single-chamber membrane-less microbial electrolysis cell 显示文摘 | Ye Yejie Wang Liyong Chen Yingwen | 2010 | Water Science and Technology2010,61,3: | 1 |
| 11 | Construction of hollow mesoporous ZnMn2O4/C microspheres with carbon nanotubes embedded in shells for high-performance aqueous zinc ions batteries显示文摘Recently,rechargeable zinc-ion batteries have been considered as the future development direction of large-scale energy storage due to their low price,safety,environmental friendliness,and excellent electrochemical performance.However,highcapacity,long-cycle stable cathode materials that can meet the demand are still to be developed.Herein,the hollow mesoporous ZnMn2O4/C microsphere cathode material with carbon nanotubes embedded in the shell was prepared by spray pyrolysis for the first time.Its capacity remained at 209.71 mAh·g−1 after 150 cycles at a rate of 0.5 A·g−1,and still maintained a specific capacity of 100.06 mAh·g−1 at a rate of 1 A·g−1 after 1,000 cycles.The outstanding performance is attributed to the hollow structure that can effectively buffer large volume changes caused by ion intercalation and deintercalation,excellent porosity,cationic defects,and high electrical conductivity of carbon nanotubes and its strong adsorption to ZnMn2O4 nanoparticles. | Feiran Chen Qinru Wang Xiaofeng Yang Chao Wang Hu Zang Yingwen Tang Tao Li Baoyou Geng | 2023 | Nano Research2023,16,1: | 0 |
| 12 | Recombinant chimpanzee adenovirus vector vaccine expressing the spike protein provides effective and lasting protection against SARS-CoV-2 infection in mice显示文摘SARS-CoV-2 infection is a global public health threat.Vaccines are considered amongst the most important tools to control the SARS-CoV-2 pandemic.As expected,deaths from SARS-CoV-2 infection have dropped dramatically with widespread vaccination.However,there are concerns over the duration of vaccine-induced protection,as well as their effectiveness against emerging variants of concern.Here,we constructed a recombinant chimpanzee adenovirus vectored vaccine expressing the full-length spike of SARS-CoV-2(Ad C68-S).Rapid and high levels of humoral and cellular immune responses were observed after immunization of C57BL/6J mice with one or two doses of Ad C68-S.Notably,neutralizing antibodies were observed up to at least six months after vaccination,without substantial decline.Single or double doses Ad C68-S immunization resulted in lower viral loads in lungs of mice against SARS-CoV-2 challenge both in the short term(21 days)and long-term(6 months).Histopathological examination of Ad C68-S immunized mice lungs showed mild histological abnormalities after SARS-CoV-2 infection.Taken together,this study demonstrates the efficacy and durability of the Ad C68-S vaccine and constitutes a promising candidate for clinical evaluation. | Mingqing Lu Kunpeng Liu Yun Peng Zhe Ding Yingwen Li Alexander Tendu Xue Hu Ge Gao Weiwei Guo Hang Liu Juhong Rao Jiaxuan Zhao Miaoyu Chen Zhiming Yuan Gary Wong Chao Shan Yanfeng Yao Jiaming Lan | 2022 | Virologica Sinica2022,37,4: | 0 |
| 13 | Dispen-Seq: a single-microparticle dispenser based strategy towards flexible cell barcoding for single-cell RNA sequencing显示文摘Single-cell RNA sequencing(sc RNA-seq)has become one of the most powerful tools to understand the heterogeneity of biological systems.While barcoding strategies have revolutionized the field of high-throughput sc RNA-seq,it is still challenging to achieve highly efficient,direct and universal cell barcoding with cost-effectiveness and minimal sample loss.Herein,a single micro-particle dispenser approach for rapid single barcode bead/cell manipulation and pairing,enabling highly efficient cell barcoding for sc RNA-seq(Dispen-Seq)was developed.Notably,Dispen-Seq provides a versatile platform which can enrich cell subgroups of interest while unlimited by input sample amounts,and can respond to changes in sample composition with high resolution and reproducibility.It is anticipated that Dispen-Seq will increase the scope of sc RNA-seq from academic research to practical applications. | Tian Tian Yingwen Chen Yunpeng Bi Xingrui Li MingXuan Gao Xuebing Zhang Weidong Ruan Jia Song Xing Xu Lingling Wu Zhi Zhu Yanling Song Chaoyong Yang | 2021 | Science China Chemistry2021,64,4: | 0 |
| 14 | An Extension to ns-3 for Simulating Mobile Charging with Wireless Energy Transfer显示文摘Many theoretical derivation of the energy model requires extensive simulation in Internet of Things (IoT). Network Simulator 3 (ns-3) provides a simulation platform for various experimental studies including energy harvest.However, the function of charge schedule and wireless energy transfer model is not yet implemented. To address this problem, in this paper we propose an extension to ns-3 for simulating mobile charging with wireless energy transfer.First, we utilize a WET Harvest Class to harvest energy from the environment and a Charge Schedule Class for the mobile charger to choose the optimal node charging in the charging request queue in ns-3. Second, we use Charge Energy Model to judge what the mobile charger will do next when the energy of current node is higher or lower than energy threshold. Evaluation results show that our improvements are feasible and helpful with charge schedule and energy model in ns-3. | Ping Zhong Yating Li Weile Huang Xiaoyan Kui Yiming Zhang Yingwen Chen | 2017 | 国际计算机前沿大会会议论文集2017,,2: | 0 |
| 15 | Effect of Na^(+)on catalytic performance of CoCe/ZSM-5 catalysts for oxidation of toluene显示文摘A CoCe/ZSM-5 catalyst was prepared by ultrasonic-assisted impregnation for the catalytic combustion of toluene.To study the effect of Na+on catalytic performance of CoCe/ZSM-5 catalysts,a series of different Si/Al ZSM-5 zeolites and catalysts doped with Na were synthesized.The experimental results show that 0.71 wt%Na+can inhibit active growth,generate more active small crystal grains,and promote improvement of the catalytic activity by the grain boundary segregation block mechanism,and the catalyst with 0.71 wt%of Na shows toluene conversion of 90 vol%at 250℃.Over 0.71 wt%of Na+content will neutralize the acid centre of the catalyst,lowering the specific surface area of the catalyst and resulting in a gradual decrease in the catalytic activity. | Qingping Zou Mingqing Liu Mengjie Fan Yaping Ding Yingwen Chen Shubao Shen | 2021 | Journal of Rare Earths2021,39,4: | 0 |
| 16 | Ultra-stable pressure is realized for Chinese single pressure refractive index gas thermometry in the range 30–90 kPa显示文摘The unit of thermodynamic temperature,the kelvin,is one of the seven base units of International System of Units.The international temperature scaIe of 1990 (ITS-90)is a practical temperature scale used worldwide to approximate thermodynamic tempera- ture T by ITS-90 temperature T90.The primary thermometry calibration facilities based on thermodynamic temperature standards are the foundation of ITS 90 and temperature measurement in a country.China has developed primary thermometry in the temperature region down to the neon triple point 24.5561 K estimated by ITS-90,but it has not yet set up any primary thermometry at lower temperatures. | Dongxu Han Bo Gao Hui Chen Pascal Gambette Haiyang Zhang Changzhao Pan Yaonan Song Wenjing Liu Jiangfeng Hu Bo Yu Yingwen Liu Ercang Luo Laurent Pitre | 2018 | Science Bulletin2018,63,24: | 0 |
| 17 | Diameter dependent doping in horizontally aligned high-density N-doped SWNT arrays显示文摘We reported the growth of horizontally aligned nitrogen-doped single-walled carbon nanotubes (SWNTs) on quartz substrates. The synthesized SWNTs were comprehensively characterized at the single nanotube level. Owing to the highly aligned nature of the nanotubes, we were able to investigate the diameter dependent doping mechanism through systematic resonant Raman spectroscopy studies. Other than the formerly found narrowing effect by N-doping, we proposed that the nanotube diameter affects the introduction of N atoms into the carbon lattice in an elaborate way. The obtained doping level increased along with the nanotube diameter but lost the increasing trend when the diameter became larger and experienced a slight decrease after reaching the local peak value. These insights about the heteroatom doping into the carbon nanotubes could benefit the development of the carbon nanotube based functional materials and extend their application in a broad range of areas. | Pan Li Yiming Li Xiao Zhang Jun Chen Yingwen Cheng Yi Li Yanwen Ma Jie Liu | 2019 | Nano Research2019,12,8: | 0 |
| 18 | Atomically Dispersed Manganese Lewis Acid Sites Catalyze Electrohydrogenation of Nitrogen to Ammonia显示文摘Ambient electrochemical nitrogen fixation is a promising and environmentally benign route for producing sustainable ammonia,but has been limited by the poor performance of existing catalysts that promote the balanced chemisorption of N2 and subsequent electrochemical activation and hydrogenation.Herein,we describe the highly selective and efficient electrohydrogenation of nitrogen to ammonia using a hollow nanorod-based hierarchically graphitic carbon electrocatalyst with abundant atomically dispersed Mn sites.We discovered that the electron interactions strengthen the interfacial binding between nitrogen and active Mn Lewis acidic hotspots.The Lewis acid-base interactions promote the chemisorption and lock up nitrogen on the active sites and suppress proton adsorption.The proton-coupled electron transfer cleavage of the nitrogen triple bond through an associative mechanism was confirmed under lower overpotential,which delivered high ammonia yield of 67.5μg h−1 mgcat.−1 and Faradaic efficiency of 13.7% at−0.25 V versus the reversible hydrogen electrode,along with∼100% selectivity and significantly enhanced electrochemical stability(about 88.8% current retention over 50 h potentiostatic test)under mild conditions.Our strategy is versatile to tailor the nitrogen fixation performance of single-atom catalysts with atomic accuracy. | Zhoutai Shang Bin Song Hongbao Li Hong Zhang Fan Feng Jacob Kaelin Wenli Zhang Beibei Xie Yingwen Cheng Ke Lu Qianwang Chen | 2022 | CCS Chemistry2022,4,6: | 0 |