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Boosting the Activity and Stability of the Photoreduction of Diluted CO_(2) by Copper Oxide Decorated CeO_(2) hetero-shells

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Chemical Research in Chinese Universities 2024年第3期40卷 513-520页

作者： XIAO Mingjiao LI Di WEI Yanze he yilei WANG Zumin YU Ranbo Department of Physical Chemistry School of Metallurgical and Ecological EngineeringUniversity of Science&Technology BejingBeijing 100083P.R.China State Key Laboratory of Biochemical Engineering Institute of Process EngineeringChinese Academy of SciencesBeijing 100190P.R.China Key Laboratory of Biopharmaceutical Preparation and Delivery Chinese Academy of SciencesBeijing 100190P.R.China

Inspired by the natural photosynthesis systems,the integrated harnessing and conversion of CO_(2) present a promising solution for addressing the ever-rising global atmospheric concentration of CO_(2).Hollow multi-shelled structured(HoMS)photocatalysts,featuring alternating shells and cavities,have recently gained recognition as efficient nano-reactors for capturing CO_(2) molecules and facilitating effective photoreduction within these hierarchical structures,leveraging the preeminent enrichment *** this work,to augment the photocatalytic efficacy of HoMS in CO_(2) treatment,highly dispersed Cu_(x)O nanoparticles(NPs)were incorporated on the CeO2 shells through a polymer-assisted impregnation method to create more active sites and strengthen the interaction between the hetero-shells and CO_(2) *** photoreduction of the CO_(2)-to-CO rate under a diluted CO_(2)(15%,volume fraction)atmosphere is improved by the introduction of Cu_(x)O NPs,with the highest CO yielding rate reaching 120µmol·h^(−1)·g^(−1) without any sacrificial *** comparison experiments and theoretical calculations reveal that the Cu_(x)O NPs promote the adsorption of CO_(2) molecules in HoMS,accelerate the charge transfer efficiency,and stabilize the surface oxygen vacancies(Ovs)during the photoreduction CO_(2) conversion *** hope these easy-to-prepare HoMS nanoreactors can contribute to the effective enrichment and valorization of CO_(2) in industrial exhaust gases.

关键词： Photoreduction CO_(2) Cu_(x)O/CeO_(2)hollow multi-shell structure(HoMS) hetero-shell

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Ti-MOF Derived N-Doped TiO2 Nanostructure as Visible-light-driven Photocatalyst

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Chemical Research in Chinese Universities 2020年第3期36卷 447-452页

作者： he yilei ZHANG Xing WEI Yanze CheN Xiaoyu WANG Zumin YU Ranbo Department of Physical Chemistry School of Metallurgical and Ecological EngineeringUniversiw of Science and Technology BeijingBeijing 100083P.R.China State Key Laboratory of Biochemical Engineering Institute of Process EngineeringChinese Academy of SciencesBeijing 100190P.R.China Key Laboratory of Advanced Material Processing&Mold Ministry of EducationZhengzhou UniversityZhengzhou 450002P.R.China

Nanostructured N-doped TiO2 photocatalyst has been prepared via a new approach from Ti-based MOF[NH2-MIL-125(Ti)]*** success of N doping enhances light absorption and narrows the ***,the as-prepared nanostructure is constructed with tiny nanoparticles and resembles a pie-like morphology inherited from the MOF,which accelerates electron ***,as a photocatalyst for the degradation of methylene blue(MB)under visible light irradiation,the N-doped TiO2(N-TiO2)nanostructure shows higher photocatalytic activity with a reaction rate constant of 0.018min^-1 than that of the TiO2-P25 and TiO2 under the visible light.

关键词： TiO2 Mctal-organic framcwork Photo-degradaton N doped Visible-light photocatalysis

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Anchoring nitrogen-doped Co_(2)P nanoflakes on NiCo_(2)O_(4)nanorod arrays over nickel foam as high-performance 3D electrode for alkaline hydrogen evolution

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Green Energy & Environment 2023年第2期8卷 470-477页

作者： Xiaohao Ji Xiaoyu Chen Lijuan Zhang Cheng Meng yilei he Xing Zhang Zumin Wang Ranbo Yu Department of Physical Chemistry School of Metallurgical and Ecological EngineeringUniversity of Science and Technology BeijingBeijing100083China State Key Laboratory of Biochemical Engineering Institute of Process EngineeringChinese Academy of Sciences1 North 2nd StreetZhongguancunHaidian DistrictBeijing100190China

Effective and robust electrocatalysts are mainly based on innovative materials and unique ***,we designed a flakelike cobalt phosphide-based catalyst supporting on NiCo_(2)O_(4)nanorods array,which in-situ grew on the nickel foam(NF)current collector,referring as NCo_(2)P/NiCo_(2)O_(4)/NF *** optimizing the microstructure and electronic structure through 3D hierarchy fabrication and nitrogen doping,the catalyst features with abundant electrochemical surface area,favorable surface wettability,excellent electron transport,as well as tailored d band ***,the as-prepared N-Co_(2)P/NiCo_(2)O_(4)/NF electrode exhibits an impressive heR activity with a low overpotentials of58 mV at 10 mA cm^(-2),a Tafel slop of 75 mV dec^(-1),as well as superior durability in alkaline *** work may provide a new pathway to effectively improve the hydrogen evolution performance of transition metal phosphides and to develop promising electrodes for practical electrocatalysis.

关键词： Hydrogen evolution reaction(heR) Cobalt phosphide Nonprecious electrocatalyst Hierarchal structure Nitrogen doping

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Quality Analysis of Signal for BDS-3 Basic System

Quality Analysis of Signal for BDS-3 Basic System

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第十一届中国卫星导航年会

作者： yilei he China Railway Design Corporation

The Bei Dou-3 basic system consisting of 19 new-generation Bei Dou global satellites(BDS-3) was officially put into operation on December 27, 2018. In addition to B1I and B3I signals, the BDS-3 also t

关键词： BDS-3 Basic system iGMAS Evaluation indicator Quality analysis

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北斗三号最简系统卫星信号质量分析

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武汉大学学报（信息科学版） 2020年第3期45卷 394-402页

作者：何义磊中国铁路设计集团有限公司天津300308

截至2018年5月,中国共发射了8颗北斗三号(BDS-3)中圆地球轨道(medium Earth orbit,MEO)卫星,组成北斗三号最简系统,播发了B1C、B2a和B2b新卫星信号,仅有17个国际全球导航卫星系统监测评估系统(international global navigation satellite system monitoring and assessment system,iGMAS)跟踪站能够接收到BDS-3卫星信号。选用17个iGMAS观测站10 d的观测数据,从数据完整率、信噪比、多路径效应、电离层延迟和周跳方面进行质量分析,并与GPS L1/L5和Galileo E1/E5a重叠频率对比,评价当前BDS-3卫星信号性能以及iGMAS测站的接收能力。结果表明,装有GNSS_GGR接收机的iGMAS测站的伪距观测值含有较大的粗差,个别装有CETC-54-GMR-4011接收机的跟踪站的周跳现象较严重。通过分析多路径效应可知,BDS-3卫星各个信号中不存在与高度角有关的系统偏差。BDS-3最简系统卫星观测数据质量与GPS L1/L5和Galileo E1/E5a相当,能够满足北斗卫星导航系统正常的工作需求。

关键词：北斗三号卫星最简系统 iGMAS 评估指标质量分析

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Accuracy analysis of BDS experiment satellite broadcast ephemeris

Accuracy analysis of BDS experiment satellite broadcast ephe...

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第九届中国卫星导航学术年会

作者： Ya Mao Qianxin Wang Chao Hu yilei he School of Environment Science & Spatial Informatics China University of Mining and Technology

Currently,five BDS-3 experiment satellites are transmitting both BDS-2 signals and new signals for *** are equipped with high-precision rubidium or/and passive hydrogen maser *** view of the inconsistency of BDS-3 experiment satellites signals received by i GMAS and MGEX network,the experiment to determine BDS-3 orbits is carried out by the step by step method through one *** order to improve the efficiency and avoid the inverse anomalies caused by too large matrix dimension in the inversion process,the normal equation matrix is decomposed by *** this paper,the internal accuracy of BDS-3(C31/C32/C33/C34) satellites orbit and clock offset is evaluated by overlapping arcs,and the average values in one year are 36.5 cm/38.4 cm/44.1 cm/48.8 cm and 2.27 ns/2.40 ns/1.88 ns/1.87 ns *** addition,satellite laser ranging(SLR),as an important external inspection tool,has been widely used in satellite orbit accuracy *** SLR to evaluate the orbit outside accuracy,and the average values of one year is 51.4 cm/40.2 cm/62.9 cm/82 ***,the precision of BDS-3 satellites broadcast-clock offset and broadcast-orbit is evaluated by BDS-3 precise ephemeris,and the SLR observation data is taken as the external inspection tool to evaluate the *** results show that the BDS-3 experiment satellite broadcast-clock accuracy is better than 40 ns,and the broadcast-orbit accuracy is about 1 m.

关键词： SLR check BDS-3 broadcast ephemeris step-by-step method accuracy analysis

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Quality Analysis of Observation Data of BeiDou-3 Experimental Satellites

Quality Analysis of Observation Data of BeiDou-3 Experimenta...

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第九届中国卫星导航学术年会

作者： yilei he Qianxin Wang Zhiwen Wang Ya Mao School of Environment Science and Spatial Informatics China University of Mining and Technology

Five new-generation Bei Dou global experimental satellites(BDS-3) have been launched into inclined geosynchronous orbit(IGSO) and medium orbit(MEO) since March *** quality of observation data has a direct impact on the performance of navigation,positioning and timing ***,it is very important to analyze the observation data quality of new-generation BDS satellites,for evaluating the service performance of *** this paper,the practical observation data of 16 i GMAS stations and 6 MGEX stations from 21 August to 20 September 2017 are selected,because they can receive the observation data of BDS-3,BDS-2(Bei Dou regional navigation system) and GPS(Global Positioning System).The observation data quality of BDS-3,BDS-2 and GPS are analyzed and compared,including the data integrity rate,multipath,signal-to-noise ratio(SNR),ionospheric delay and cycle slip *** results show that the data integrity rate on the B1 and B3 frequency of BDS-3 and BDS-2 are at the same *** SNR of BDS-3 are outperformed that of *** multipath error and the ionospheric delay error of BDS-3 are slightly better than those of *** the cycle slip ratio of BDS-3 is similar to that of ***,the new-generation BDS-3 satellites can meet the normal working requirements and the data quality of BDS-3 is better than that of BDS-2 in general.

关键词： BDS global experimental satellites evaluation index quality analysis

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不同卵巢反应性患者血清及卵泡液AMH与IVF结局的相关性分析

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中华生殖与避孕杂志 2023年第1期43卷 42-49页

作者：何艺磊李蓉北京大学第三医院妇产科生殖医学中心北京100191

目的探讨不同卵巢反应性患者血清及卵泡液抗苗勒管激素(anti-Müllerian hormone,AMH)水平与单次促排卵周期优质胚胎数、新鲜周期移植妊娠结局及累积妊娠结局的相关性。方法采用回顾性队列研究的方法,首先选择2017年10月至2018年1月期... 详细信息

目的探讨不同卵巢反应性患者血清及卵泡液抗苗勒管激素(anti-Müllerian hormone,AMH)水平与单次促排卵周期优质胚胎数、新鲜周期移植妊娠结局及累积妊娠结局的相关性。方法采用回顾性队列研究的方法,首先选择2017年10月至2018年1月期间在北京大学第三医院妇产科生殖医学中心行体外受精/卵胞质内单精子注射和胚胎移植(in vitro fertilization/intracytoplasmic sperm injection and embryo transfer,IVF/ICSI-ET)的患者为研究对象,共714例,收集临床资料并对取卵日卵泡液进行AMH水平检测,根据卵巢反应分为卵巢正常反应组401例,卵巢低反应组124例,卵巢高反应组189例,比较3组患者的一般临床特征、基础血清AMH及取卵日卵泡液AMH水平、优质胚胎数、新鲜周期移植妊娠及活产率、累积妊娠及累积活产率等相关指标,并进行IVF结局的相关影响因素分析。结果卵巢低反应组、卵巢正常反应组和卵巢高反应组患者基础血清AMH及卵泡液AMH分别为(0.71±0.77)μg/L、(2.72±3.02)μg/L、(5.90±4.42)μg/L以及(3.31±3.37)μg/L、(4.43±5.03)μg/L、(6.20±5.37)μg/L,差异均具有统计学意义(均P0.05)。年龄与血清AMH(P=0.045、P=0.017)、年龄与卵泡液AMH(P<0.001、P=0.026)对卵巢正常反应组优质胚胎数的影响具有统计学意义。卵泡液AMH水平为卵巢正常反应组新鲜周期移植妊娠率及累积妊娠率的影响因素(P=0.009、P=0.047)。以累积妊娠为标准计算卵泡液AMH cut-off值为3.50μg/L。结论年龄与血清AMH、卵泡液AMH为卵巢正常反应组优质胚胎数的影响因素。卵泡液AMH为卵巢正常反应组新鲜周期及累积妊娠率的影响因素。

关键词：妊娠率抗苗勒管激素卵泡液受精,体外胚胎移植

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Enhancing Energy Efficiency with a Dynamic Trust Measurement Scheme in Power Distribution Network

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Computers, Materials & Continua 2024年第3期78卷 3909-3927页

作者： yilei Wang Xin Sun Guiping Zheng Ahmar Rashid Sami Ullah Hisham Alasmary Muhammad Waqas Zhejiang Electric-Power Corporation Research Institute Zhejiang310014China Faculty of Information Technology Beijing University of TechnologyBeijing100124China Beijing Trusty Cloud Technology Co. Ltd.Beijing100022China Department of Computer Science and Engineering Ghulam Ishaq Khan Institute of Engineering Sciences and EngineeringTopi23640Pakistan Department of Computer Science Shaheed Benazir Bhutto UniversitySheringalUpper Dir18050Pakistan Department of Computer Science College of Computer ScienceKing Khalid UniversityAbha61421Saudi Arabia School of Computing and Mathematical Science Faculty of Engineering and ScienceUniversity of GreenwichLondonSE109LSUK School of Engineering Edith Cowan UniversityPerth6027Australia

The application of Intelligent Internet of Things(IIoT)in constructing distribution station areas strongly supports platform transformation,upgrade,and intelligent *** sensing layer of IIoT comprises the edge convergence layer and the end sensing layer,with the former using intelligent fusion terminals for real-time data collection and ***,the influx of multiple low-voltage in the smart grid raises higher demands for the performance,energy efficiency,and response speed of the substation fusion ***,it brings significant security risks to the entire distribution substation,posing a major challenge to the smart *** response to these challenges,a proposed dynamic and energy-efficient trust measurement scheme for smart grids aims to address these *** scheme begins by establishing a hierarchical trust measurement model,elucidating the trust relationships among smart IoT *** then incorporates multidimensional measurement factors,encompassing static environmental factors,dynamic behaviors,and energy *** comprehensive approach reduces the impact of subjective factors on trust ***,the scheme incorporates a detection process designed for identifying malicious low-voltage end sensing units,ensuring the prompt identification and elimination of any malicious ***,in turn,enhances the security and reliability of the smart grid *** effectiveness of the proposed scheme in pinpointing malicious nodes has been demonstrated through simulation ***,the scheme outperforms established trust metric models in terms of energy efficiency,showcasing its significant contribution to the field.

关键词： IIoT trusted measure energy efficient

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An intelligent prediction model of epidemic characters based on multi-feature

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CAAI Transactions on Intelligence Technology 2024年第3期9卷 595-607页

作者： Xiaoying Wang Chunmei Li yilei Wang Lin Yin Qilin Zhou Rui Zheng Qingwu Wu Yuqi Zhou Min Dai Information Center Third Affiliated Hospital of Sun Yat‐sen UniversityGuangzhouChina School of Computer Science Qufu Normal UniversityRizhaoChina Department of Allergy Third Affiliated Hospital of Sun Yat‐sen UniversityGuangzhou China 4Department of Otorhinolaryngology‐head and Neck Surgery Third Affiliated Hospital of Sun Yat‐sen UniversityGuangzhouChina Department of Pulmonary and Critical Care Medicine Third Affiliated Hospital of Sun Yat‐sen UniversityGuangzhouChina Department of Traditional Chinese Medicine Third Affiliated Hospital of Sun Yat‐sen UniversityGuangzhouChina

The epidemic characters of Omicron(***-scale transmission)are significantly different from the initial variants of *** data generated by large-scale transmission is important to predict the trend of epidemic ***,the re-sults of current prediction models are inaccurate since they are not closely combined with the actual situation of Omicron *** consequence,these inaccurate results have negative impacts on the process of the manufacturing and the service industry,for example,the production of masks and the recovery of the tourism *** authors have studied the epidemic characters in two ways,that is,investigation and ***,a large amount of data is collected by utilising the Baidu index and conduct questionnaire survey concerning epidemic ***,theβ-SEIDR model is established,where the population is classified as Susceptible,Exposed,Infected,Dead andβ-Recovered persons,to intelligently predict the epidemic characters of *** thatβ-Recovered persons denote that the Recovered persons may become Sus-ceptible persons with probabilityβ.The simulation results show that the model can accurately predict the epidemic characters.

关键词： artificial intelligence big data data analysis evaluation feature extraction intelligent information processing medical applications

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