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Transportation Safety and Environment 2024年第2期6卷 13-23页

作者： Chengyong liu shijie li Shuzhe Chen Qifan Chen Kang liu School of Navigation Wuhan University of TechnologyWuhan 430063HubeiChina Hubei Key Laboratory of Inland Shipping Technology Wuhan 430063HubeiChina

Due to the flammability and explosive nature of liquefied natural gas(LNG),an extremely strict process is followed for the transporta-tion of LNG carriers in China.Particularly,no LNG carriers are operating in inland rivers within the country.Therefore,to ensure the future navigation safety of LNG carriers entering the Yangtze River,the risk sources of LNG carriers’navigation safety must be identi-fied and evaluated.Based on the Delphi and expert experience method,this paper analyses and discusses the navigation risk factors of LNG carriers in the lower reaches of the Yangtze River from four aspects(human,ship,environment and management),identifies 12 risk indicators affecting the navigation of LNG carriers and establishes a risk evaluation index system.Further,an entropy weight fuzzy model is utilized to reduce the influence of subjective judgement on the index weight as well as to conduct a segmented and overall evaluation of LNG navigation risks in the Baimaosha Channel.Finally,the cloud model is applied to validate the consistent feasibility of the entropy weight fuzzy model.The research results indicate that the method provides effective technical support for further study on the navigation security of LNG carriers in inland rivers.

关键词： liquefied natural gas(LNG)carrier navigation risk entropy weight cloud model risk assessment

Enhanced antibiotic degradation performance of Cd_(0.5)Zn_(0.5)S/Bi_(2)MoO_(6) S-scheme photocatalyst by carbon dot modification

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Journal of Materials Science & Technology 2023年第33期164卷 59-67页

作者： shijie li Ruyu Yan Mingjie Cai Wei Jiang Mingyi Zhang Xin li Key Laboratory of Health Risk Factors for Seafood of Zhejiang Province National Engineering Research Center for Marine AquacultureCollege of Marine Science and TechnologyZhejiang Ocean UniversityZhoushan 316022China Key Laboratory for Photonic and Electronic Bandgap Materials Ministry of EducationSchool of Physics and Electronic EngineeringHarbin Normal UniversityHarbin 150025China Institute of Biomass Engineering Key Laboratory of Energy Plants Resource and UtilizationMinistry of Agriculture and Rural AffairsSouth China Agricultural UniversityGuangzhou 510642China

S-scheme heterojunction engineering is an effective strategy to attain distinctive photocatalysts.Herein,a carbon dots modulated S-scheme hetero-structured photocatalyst of Cd_(0.5)Zn_(0.5)S nanoparticles/Bi_(2)MoO_(6) microspheres/carbon dots (CZCBM),aiming to conquer the photo-corrosion and strengthen the photocatalytic property of Cd_(0.5)Zn_(0.5)S,was developed via a facile solvothermal route.Under visible light,the optimal CZCBM-2 affords a 1.8-,1.5-,or 0.6-time reinforcement in the oxytetracycline degradation rate constant compared to Bi_(2)MoO_(6),Cd_(0.5)Zn_(0.5)S or Cd_(0.5)Zn_(0.5)S/Bi_(2)MoO_(6),which is credited to the strengthened visible-light response,increased reactive sites,and efficient dissolution of photo-carriers with optimal redox capacity because of the co-effect of carbon dots and S-scheme heterostructure.Significantly,the photo-corrosion of Cd_(0.5)Zn_(0.5)S is significantly suppressed and CZCBM-2 affords superior stability and reusability during cycling tests.Besides,CZCBM-2 can be well adapted to various environments.The toxicology appraisement unravels the decreased eco-toxicity of most intermediates compared to oxytetracycline.Lastly,an S-scheme charge transfer mechanism with carbon dots as electron reservoir in CZCBM is deduced,which uncloses that •O_(2)− and h+ dominantly account for oxytetracycline eradication and detoxification.This study demonstrates the design of unique carbon dots favored S-scheme heterostructures as an effective “Two Birds with One Stone” strategy to achieve high anti-photo-corrosion performance and reinforced photocatalytic performance of sulfides.

关键词： Carbon dots S-scheme heterojunction Synergistic effect Pharmaceuticals and personal care products(PPCPs) Toxicity analysis Anti-photocorrosion

Fabrication of liOH-metal organic framework derived hierarchical porous host carbon matrix composites for seasonal thermochemical energy storage

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Nano Research 2022年第9期15卷 8028-8038页

作者： Xiangyu Yang shijie li Jianguo Zhao Hongyu Huang lisheng Deng School of Materials Science and Engineering Taiyuan University of TechnologyTaiyuan 030024China Institute of Carbon Materials Science Shanxi Datong UniversityDatong 037009China Key Laboratory of Renewable Energy Guangdong Provincial Key Laboratory of New and Renewable Energy Research and DevelopmentGuangzhou Institute of Energy ConversionChinese Academy of SciencesGuangzhou 510640China Guangdong Intelligent Filling Technology limited Company Foshan 528137China

By virtue of its long lifespan and outstanding storage intensity with near-zero heat loss,salt hydrate thermochemical energy storage(TES)materials provide a feasible option for the effective use of renewable energy and overcoming its unsynchronized supply and demand.Here,an activated porous carbon originating from the zeolite imidazolate framework(ZHCM)is fabricated and served as the carbon matrix for the liOH TES material.The as-synthesized li/ZHCM2-40 not only has excellent storage intensity(maximum 2414.2 kJ·kg^(−1))with low charging temperature,but also shows great hydration properties stemming from the ultrahigh surface area and hierarchical porous structure of ZHCM2.Besides,this composite material exhibits superior thermal conductivity,while its storage intensity is only attenuated by 10.2%after 15 times of consecutive charge-discharge process,revealing its outstanding cycle stability.And the numerical simulation results also demonstrate its superior heat transfer performance.The developed liOH TES composite may afford a new avenue for efficient low-grade thermochemical energy storage and liberate the possibility of further exploration of metal organic frameworks derived porous carbon matrix in the future.

关键词： liOH TES composite ZIF-8 derived porous carbon low-grade thermochemical energy storage cycle stability

Development of covalent-organic frameworks derived hierarchical porous hollow carbon spheres based liOH composites for thermochemical heat storage

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Journal of Energy Chemistry 2022年第10期31卷 301-310,I0007页

作者： Xiangyu Yang shijie li Jianguo Zhao Hongyu Huang lisheng Deng Institute of Carbon Materials Science Shanxi Datong UniversityDatong 037009ShanxiChina School of Materials Science and Engineering Taiyuan University of TechnologyTaiyuan 030024ShanxiChina Key Laboratory of Renewable Energy Guangdong Provincial Key Laboratory of New and Renewable Energy Research and DevelopmentGuangzhou Institute of Energy ConversionChinese Academy of SciencesGuangzhou 510640GuangdongChina Guangdong Intelligent Filling Technology limited Company Foshan 528137GuangdongChina

Under the joint assistance of its excellent storage strength, accessible long storage lifespan, and high heat utilization efficiency, salt hydrate-based thermochemical heat storage(THS) materials give renewable energy an important outlet to alleviate the pressure of underutilization. Herein, an activated hollow spherical carbon(AHSC) with hierarchical porous architectures converted from covalent-organic frameworks(COFs) is constructed and utilized as the supporting matrix for li OH.THS composite material for the first time. The obtained li/AHSC_(3) composites have distinguished hydration performance while manifesting impressive storage ability up to 1916.4 k J kg^(-1)with low operating temperature stemming from the collective effect of the void spherical framework, multimodal porosity, and high surface area of AHSC3. And the li/AHSC3-40 composite with evidently progressed thermal conductivity is capable of realizing 94.5% heat preservation after twenty-five adsorption-desorption cycles, exhibiting its eminent cyclability and great heat transfer performance. This study not only brings new hope for overcoming the underutilization of low-grade heat but also may enlighten new ideas for enriching the application scenarios of COFs-derived carbonaceous materials.

关键词： Activated hollow spherical carbon Hierarchical porous architectures liOH·THS composite material Storage ability COFs-derived carbonaceous materials

Rationally designed Ta_(3)N_(5)/BiOCl S-scheme heterojunction with oxygen vacancies for elimination of tetracycline antibiotic and Cr(Ⅵ):Performance,toxicity evaluation and mechanism insight

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Journal of Materials Science & Technology 2022年第28期123卷 177-190页

作者： shijie li Mingjie Cai Chunchun Wang Yanping liu Neng li Peng Zhang Xin li Key Laboratory of Health Risk Factors for Seafood of Zhejiang Province National Engineering Research Center for Marine AquacultureCollege of Marine Science and TechnologyZhejiang Ocean UniversityZhoushan 316022China Institute of Innovation&Application Zhejiang Ocean UniversityZhoushan 316022China State Key Laboratory of Silicate Materials for Architectures Wuhan University of TechnologyWuhan 430070China State Center for International Cooperation on Designer Low-Carbon&Environmental Materials(CDLCEM) School of Materials Science and EngineeringZhengzhou UniversityZhengzhou 450001China Institute of Biomass Engineering Key Laboratory of Energy Plants Resource and UtilizationMinistry of Agriculture and Rural AffairsSouth China Agricultural UniversityGuangzhou 510642China

S-scheme heterojunction photocatalysts have been the“stars”in the field of photocatalysis.Herein,a novel S-scheme heterojunction of Ta_(3)N_(5)/BiOCl with oxygen vacancies(OVs)was fabricated via a facile method.The charge separation and transport mechanism of this Ta_(3)N_(5)/BiOCl S-scheme heterojunction was verified by the analyses of band energy structures,active species,photoelectric behaviors and DFT theoretical calculation.Compared with Ta_(3)N_(5)and BiOCl,the Ta_(3)N_(5)/BiOCl unveils substantially upgraded photocatalytic property under visible light,and the photocatalytic efficiency for removal of tetracycline(TC)and hexavalent chromium(Cr(VI))reaches 89.6%and 91.6%,respectively.The substantial enhancement of the photocatalytic activity is attributed to the synergistic effect of the S-scheme hetero-structure and oxygen vacancies,which improves the visible-light absorption,while promoting the spatial separation of charge carriers with the optimum redox capacity,thereby boosting the production of active species for catalytic reactions.The TC degradation pathway is deduced and the toxicity evolution of TC is appraised using the QSAR method.In a nutshell,this work gives a deep understanding of the photocatalytic mechanism based on Ta_(3)N_(5)/BiOCl as well as presents a newfangled thought for developing highly efficient S-scheme heterojunction photocatalysts for water decontamination.

关键词： Ta_(3)N_(5)/BiOCl S-scheme heterojunction Oxygen vacancy Visible-light photocatalysis Antibiotic degradation Cr(Ⅵ)reduction

Ta_(3)N_(5)/CdS Core–Shell S‑scheme Heterojunction Nanofibers for Efficient Photocatalytic Removal of Antibiotic Tetracycline and Cr(VI):Performance and Mechanism Insights

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Advanced Fiber Materials 2023年第3期5卷 994-1007页

作者： shijie li Mingjie Cai Chunchun Wang Yanping liu Key Laboratory of Health Risk Factors for Seafood of Zhejiang Province National Engineering Research Center for Marine AquacultureCollege of Marine Science and TechnologyZhejiang Ocean UniversityZhejiang ProvinceZhoushan 316022China Institute of Innovation and Application Zhejiang Ocean UniversityZhejiang ProvinceZhoushan 316022China

Ta_(3)N_(5)/CdS core–shell S-scheme heterojunction nanofibers are fabricated by in situ growing CdS nanodots on Ta_(3)N_(5) nanofib-ers via a simple wet-chemical method.These Ta_(3)N_(5)/CdS nanofibers not only affords superior photocatalytic tetracycline degradation and mineralization performance,but also cause an efficient photocatalytic Cr(VI)reduction performance.The creation of favorable core–shell fiber-shaped S-scheme hetero-structure with tightly contacted interface and the maximum interface contact area promises the effective photo-carrier disintegration and the optimal photo-redox capacity synchronously,thus leading to the preeminent photo-redox ability.Some critical environmental factors on the photo-behavior of Ta_(3)N_(5)/CdS are also evaluated in view of the complexity of the authentic aquatic environment.The degradation products of tetracycline were confirmed by HPLC–MS analyses.Furthermore,the effective decline in eco-toxicity of TC intermediates is confirmed by QSAR calculation.This work provides cutting-edge guidelines for the design of high-performance Ta_(3)N_(5)-based S-scheme heterojunction nanofibers for environment restoration.

关键词： Ta_(3)N_(5)/CdS Electrospinning S-scheme heterojunction Core–shell hetero-structure Cr(VI)reduction Antibiotic degradation

A Fast and Accurate LEO Satellite-Based Direct Position Determination Assisted by TDOA Measurements

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China Communications 2022年第1期19卷 92-103页

作者： shijie li Qianyun Zhang Boyu Deng Biyi Wu Yue Gao School of Cyber Science and Technology BeiHang UniversityBeijing 100191China Tsinghua University ChinaBeijing 100084China Beijing Institute of Technology Beijing 100081China School of Computer Science Fudan University Shanghai 200433China

This paper focuses on the trusted vessel position acquisition using passive localization based on the booming low-earth-orbit(LEO) satellites. As the high signal-to-noise ratio(SNR) reception cannot always be guaranteed at LEO satellites, the recently developed direct position determination(DPD)is adopted. For LEO satellite-based passive localization systems, an efficient DPD is challenging due to the excessive exhaustive search range leading from broad satellite coverage. In order to reduce the computational complexity, we propose a time difference of arrival-assisted DPD(TA-DPD) which minimizes the searching area by the time difference of arrival measurements and their variances. In this way, the size of the searching area is determined by both geometrical constraints and qualities of received signals, and signals with higher SNRs can be positioned more efficiently as their searching areas are generally smaller.Both two-dimensional and three-dimensional passive localization simulations using the proposed TA-DPD are provided to demonstrate its efficiency and validity. The superior accuracy performance of the proposed method, especially at low SNRs conditions, is also verified through the comparison to conventional two-step methods. Providing a larger margin in link budget for satellite-based vessel location acquisition,the TA-DPD can be a competitive candidate for trusted marine location service.

关键词： direct position determination LEO satellite constellation passive localization TDOA

Evaluation of Various Modification Methods for Enhancing the Performance of Recycled Concrete Aggregate

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Journal of Renewable Materials 2022年第10期10卷 2685-2698页

作者： Xiaoyan liu li liu Junqing Zuo Pingzhong Zhao Xian Xie shijie li Kai Lyu Chunying Wu Surendra P.Shah College of Mechanics and Materials Hohai UniversityNanjing210098China Shanghai Construction Group Co. Ltd.Shanghai200080China College of Civil and Transportation Engineering Hohai UniversityNanjing210098China Jiangsu Transportation Institute Co. Ltd.Nanjing210017China Center for Advanced Cement-Based Materials(ACBM) Northwestern UniversityEvanstonII 60208USA

Due to the existence of the attached mortar,the performance of the recycled concrete aggregate(RCA)is inferior to the natural aggregate,which significantly limits its wide application in industry.In this study,five kinds of modified solutions were used to modify the surface of RCA,and the modification effects were compared.The results showed that sodium silicate,nano-silica(NS),Bacillus pasteurii and soybean powder had relatively good modification effects on RCA,which could reduce the crushing value and water absorption,and increase apparent density.The composite solution(15%sodium silicate and 2%NS)and soybean powder solution had better modification effect.The 28 d compressive strength and splitting tensile strength of recycled aggregate concrete(RAC)prepared by RCA modified by soybean powder solution were 4.6%and 5.2%higher than those prepared by RCA modified by composite solution,respectively.This indicates that among the five kinds of modified solutions,soybean powder solution has the best modification effect on RCA,and the optimal soaking time of soybean powder solution is 8 h.At this time,the crushing value,water absorption and apparent density of RCA are 12.8%,5.3%,and 2653 kg/m^(3),respectively.The research results of this study provide a reference for the modification of RCA and its efficient utilization.

关键词： Recycled concrete aggregate modification solution soybean powder physical properties

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消化道肿瘤新辅助放化疗后的内镜评效

中华胃肠外科杂志 2024年第4期27卷 359-364页

作者：李士杰王警吴齐北京大学肿瘤医院暨北京市肿瘤防治研究所、恶性肿瘤发病机制及转化研究教育部重点实验室内镜中心北京100142

新辅助放化疗作为局部进展期直肠癌、食管癌及食管胃结合部癌的标准治疗方案,不但能提高肿瘤局部控制率,还能使部分患者获得病理完全缓解。对新辅助治疗后达到临床完全缓解的患者,等待观察策略和器官保留理念可在不降低肿瘤学疗效的前提... 详细信息

新辅助放化疗作为局部进展期直肠癌、食管癌及食管胃结合部癌的标准治疗方案,不但能提高肿瘤局部控制率,还能使部分患者获得病理完全缓解。对新辅助治疗后达到临床完全缓解的患者,等待观察策略和器官保留理念可在不降低肿瘤学疗效的前提下,减少不必要的手术创伤并降低并发症发生风险,大幅提高患者生活质量。目前,包括白光内镜、内镜下活检、内镜图像增强技术、超声内镜检查、超声内镜引导下针吸活检术、内镜黏膜下剥离术和人工智能辅助技术等在内的多种手段,已成为新辅助放化疗后疗效评估的重要参考依据,并在临床中得到广泛应用。本文将针对临床中目前常用的以及新型内镜技术,在直肠癌、食管癌及食管胃结合部癌新辅助放化疗疗效评估中的应用及最新进展进行介绍。

关键词：内镜直肠肿瘤食管肿瘤食管胃结合部肿瘤新辅助放化疗疗效评估

Effects of Porous Graphene on liOH Based Composite Materials for Low Temperature Thermochemical Heat Storage

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Journal of Renewable Materials 2022年第11期10卷 2895-2906页

作者： lisheng Deng Hongyu Huang Zhaohong He shijie li Zhen Huang Mitsuhiro Kubota You Zhou Dezhen Chen Thermal and Environmental Engineering Institute School of Mechanical EngineeringTongji UniversityShanghai200092China Guangzhou Institute of Energy Conversion Chinese Academy of SciencesGuangzhou510640China Department of Chemical Engineering Graduate School of EngineeringNagoya UniversityNagoya464-8603Japan National Institute of Clean-and-Low-Carbon Energy Beijing102200China

Thermochemical heat storage material inorganic hydrate liOH is selected as a promising candidate material for storing low-temperature heat energy because of its high energy density(1440 kJ/kg)and mild reaction process.However,the low hydration rate of liOH limits the performance of low temperature thermochemical heat storage system as well as the thermal conductivity.In this study,porous-graphene/liOH composite thermochemical heat storage materials with strong water sorption property and higher thermal conductivity were synthesized by hydrothermal process.The experimental results show that the hydration rate of the composites was greatly improved.The heat storage density of the composite materials was increased by 47%(from 661 kJ/kg to 974 kJ/kg).By combing the porous graphene,the thermal conductivity of composites with different contents were highly increased by 21.1%to 78.7%,but the increase of heat storage density is opposite to that of thermal conductivity.The development of high-performance materials for thermochemical heat storage should consider the relationship between the heat storage density and thermal conductivity of the material,and the thermal conductivity of the supporter needs to be further improved.

关键词： Thermochemical heat storage hydration thermal conductivity porous graphene