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A perspective on the key factors of safety for rechargeable magnesium batteries

Journal of Energy Chemistry 2024年第7期94卷 656-676页

作者： Shuangshuang Tan Jie Xu Rongrui Deng Qiannan Zhao Chaohe Xu Guangsheng Huang Jingfeng Wang Fusheng Pan national Engineering research center for Magnesium Alloys Chongqing UniversityChongqing 400044China national Innovation center for Industry-Education Integration of Energy Storage Technology College of Materials Science and EngineeringChongqing UniversityChongqing 400044China Chongqing Institute of New Energy Storage Materials and Equipment Chongqing 401135China

Rechargeable Mg batteries(RMBs)have become one of the best subsitutes for lithium-ion batteries due to the high volumetric capacity,abundant resources,and uniform plating behavior of Mg metal ***,the safety hazard induced by the formation of high-modulue Mg dendrites under a high current density(10 mA cm^(-1))was still revealed in recent *** has forced researchers to re-examine the safety of *** this review,the intrinsic safety factors of key components in RMBs,such as uneven plating,pitting and flammability of Mg anode,heat release and crystalline water decomposition of cathode,strong corrosion,low oxidition stability and flammability of electrolytes,and soforth,are systematacially *** origins,formation mechanisms,and possible safety hazards are deeply *** develop high-performance Mg anode,current strategies including designing artificial SEI,three-dimensional substrates,and Mg alloys are *** practical electrolytes,the configurations of boron-centered anions and simple Mg salts and the functionalized solvent with high boiling point and low flammability are suggested to comprehensively *** addition,the future study should more focus on the investigation on the thermal runaway and decomposition of cathode materials and *** review aims to provide fundamental insights into the relationship between electrochemistry and safety,further promoting the sustainable development of RMBs.

关键词： Rechargeable Mg batteries Battery safety Mg dendrites Electrolyte decomposition Intrinsic safety issues

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Understanding Citizens’ emotion States under the Urban Livability Environment through Social Media Data: a Case Study of Wuhan

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Journal of Geodesy and Geoinformation Science 2022年第2期5卷 49-59页

作者： Lai CHEN Chaogui KANG Chao YANG national Engineering research center for Geographic Information System China University of Geosciences(Wuhan)Wuhan 430074China

It is recognized that a city with a livable environment can bring happiness to *** this study,we explored the social media users’emotional states in their current living spaces and found out the relationship between the social media users’emotions and urban *** adopt six urban livability indicators(including education,medical services,public facilities,leisure places,employment,and transportation)to construct city livable ***,the Analytic Hierarchy Process(AHP)spatial statistic method is applied to identify and analyze the different habitable regions of Wuhan *** terms of citizen’s emotion analysis,we use Long Short-Term Memory(LSTM)neural network to analyze the Weibo text and obtain the Weibo users’sentiment *** correlation analysis of residents’emotions and city livability results shows a positive correlation between the livable city areas(i.e.,the area with higher livable ranking indices)and Weibo users’sentiment scores(with a Pearson correlation coefficient of 0.881 and P-Value of 0.004).In other words,people who post Weibo in high livability areas of Wuhan express more positive emotional ***,emotion distribution varies in different regions,which is mainly caused by people’s distribution and the diversity of the city’s functional areas.

关键词： urban livability sentiment analysis Sina Weibo Analytic Hierarchy Process natural language processing Long Short-Term Memory

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Exclusive enteral nutrition for treating pediatric Crohn’s disease

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World Journal of Pediatrics 2024年第9期20卷 869-871页

作者： Yu Yu Jie Chen Department of Gastroenterology Children’s HospitalNational Clinical Research Center for Child HealthZhejiang University School of MedicineHangzhou 310052China

Crohn's disease(CD),an enduring and relapsing condition afecting the gastrointestinal tract,manifests in a spectrum of symptoms and clinical manifestations that can profoundly afect quality of life[1].Recently,CD has emerged as a global burden of *** China,the prevalence and incidence of childhood infammatory bowel disease(IBD)have steadily increased,from 0.5 per 1 million in 2001 to 6.0 per 1 million in 2010[2].Pediatric patients often face a longer treatment duration than adults.

关键词： Crohn pediatric nutrition

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Cavity-controlled methanol conversion over zeolite catalysts

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national Science Review 2023年第9期10卷 72-91页

作者： Wenna Zhang Shanfan Lin Yingxu Wei Peng Tian Mao Ye Zhongmin Liu national Engineering research center of Lower-Carbon Catalysis Technology Dalian National Laboratory for Clean Energy iChEM(Collaborative Innovation Center of Chemistry for Energy Materials) Dalian Institute of Chemical Physics Chinese Academy of Sciences Energy College University of Chinese Academy of Sciences State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences

The successful development and application in industry of methanol-to-olefins(MTO) process brought about an innovative and efficient route for olefin production via non-petrochemical resources and also attracted attention of C1 chemistry and zeolite *** sieve catalysts with diversified microenvironments embedding unique channel/cavity structure and acid properties,exhibit demonstrable features and advantages in the shape-selective catalysis of ***,shape-selective catalysis over8-MR and cavity-type zeolites with acidic supercage environment and narrow pore opening manifested special host-guest interaction between the zeolite catalyst and guest reactants,intermediates and *** caused great differences in product distribution,catalyst deactivation and molecular diffusion,revealing the cavity-controlled methanol conversion over 8-MR and cavity-type zeolite ***,the dynamic and complicated cross-talk behaviors of catalyst material(coke)-reaction-diffusion over these types of zeolites determines the catalytic performance of the methanol *** this review,we shed light on the cavity-controlled principle in the MTO reaction including cavity-controlled active intermediates formation,cavity-controlled reaction routes with the involvement of these intermediates in the complex reaction network,cavity-controlled catalyst deactivation and cavity-controlled *** these were exhibited by the MTO reaction performances and product selectivity over 8-MR and cavity-type zeolite *** strategies inspired by the cavity-controlled principle were developed,providing great promise for the optimization and precise control of MTO process.

关键词： methanol-to-olefins cavity-controlled principle reaction intermediates and routes deactivation and diffusion shape-selective catalysis

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The Investigation of Data Voting Algorithm for Train Air-Braking System Based on Multi-Classification SVM and ANFIS

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Chinese Journal of Electronics 2024年第1期33卷 274-281页

作者： Juhan WANG Ying GAO Yuan CAO Tao TANG School of Electronics and Information Engineering Beijing Jiaotong University Graduate Department China Academy of Railway Science national Engineering research center of Rail Transportation Operation and Control System Beijing Jiaotong University

The pressure data of the train air braking system is of great significance to accurately evaluate its operation state. In order to overcome the influence of sensor fault on the pressure data of train air braking system, it is necessary to design a set of sensor fault-tolerant voting mechanism to ensure that in the case of a pressure sensor fault, the system can accurately identify and locate the position of the faulty sensor, and estimate the fault data according to other normal data. A fault-tolerant mechanism based on multi-classification support vector machine(SVM) and adaptive network-based fuzzy inference system(ANFIS) is introduced. Multi-classification SVM is used to identify and locate the system fault state, and ANFIS is used to estimate the real data of the fault sensor. After estimation, the system will compare the real data of the fault sensor with the ANFIS estimated data. If it is similar,the system will recognize that there is a false alarm and record it. Then the paper tests the whole mechanism based on the real data. The test shows that the system can identify the fault samples and reduce the occurrence of false alarms.

关键词： Support vector machines Fault diagnosis Pressure sensors Fuzzy logic Fault tolerance Adaptive systems Fault tolerant systems

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Asymptotics for filtration of polydisperse suspension with small impurities

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Applied Mathematics and Mechanics(English Edition) 2021年第1期42卷 109-126页

作者： L.I.KUZMINA Y.V.OSIPOV T.N.GORBUNOVA Department of Applied Mathematics National Research University Higher School of EconomicsMoscow 101000Russia Department of Applied Mathematics Moscow State University of Civil Engineering(National Research University)Moscow 129337Russia

A model for deep bed filtration of a polydisperse suspension with small impurities in a porous medium is *** suspended particles move with the same velocity as the carrier water and get blocked in the pore throats due to the size-exclusion mechanism of particle retention.A solution of the model in the form of a traveling wave is *** global exact solution for a multiparticle filtration with one high concentration and several low concentrations of suspended particles is obtained in an explicit *** analytic solutions for a bidisperse suspension with large and small particles are *** profiles of the retained small particles change monotony with *** global asymptotics for the filtration of a polydisperse suspension with small kinetic rates is constructed in the whole filtration zone.

关键词： deep bed filtration suspension colloid porous medium particle size distribution analytical model

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Spatially-separated redox sites enabling selective atmospheric CO_(2)photoreduction to CH_(4)

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Science China Chemistry 2023年第7期66卷 1997-2003页

作者： Yang Wu Mingyu Wu Juncheng Zhu Xiaojing Zhang Jing Li Kai Zheng Jun Hu Chengyuan Liu Yang Pan Junfa Zhu Yongfu Sun Yi Xie Hefei national research center for Physical Sciences at Microscale National Synchrotron Radiation LaboratorySchool of Chemistry and Materials Scienceand iChEM(Collaborative Innovation Center of Chemistry for Energy Materials)University of Science and Technology of ChinaHefei 230026China Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China

CO_(2)photoreduction to high-valued CH_(4)is highly attractive,whereas the CH_(4)selectivity and activity,especially under atmospheric CO_(2),is still ***,we design spatially-separated redox sites on two-dimensional heterostructured nanosheets with loaded metal oxides,thus achieving high reactivity and selectivity of photocatalytic atmospheric CO_(2)reduction to CH_(4).Taking the synthetic In_(2)O_(3)/In_(2)S_(3)nanosheets with loaded PdO quantum dots as a prototype,quasi in-situ X-ray photoelectron spectra reveal the Pd sites accumulate photogenerated holes for dissociating H_(2)O and the In sites accept photoexcited electrons to activate CO_(2).Moreover,the Pd-OD bond is confirmed by in-situ Fourier-transform infrared spectra during the D2O labeling experiment,indicating the PdO quantum dots participate in H_(2)O oxidation to supply hydrogen species for CO_(2)*** a result,in a simulated air atmosphere,the PdO-In_(2)O_(3)/In_(2)S_(3)nanosheets enable favorable atmospheric CO_(2)-to CH_(4)photoreduction with nearly 100%selectivity and ultralong stability of 240 h as well as CO_(2)conversion of 48.2%.This study opens an approach towards designing photocatalysts with spatially-separated redox sites to achieve efficient oxidation and reduction of CO_(2)photocatalysis to CH_(4).

关键词： atmospheric CO_(2)photoreduction to CH_(4) spatially-separated redox sites quantum dots 2D heterostructured nanosheets

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Preparation and hydrogen storage properties of MgH2-trimesic acid-TM MOF（TM=Co,Fe） composites

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Journal of Materials Science & Technology 2019年第10期35卷 2132-2143页

作者： Zhewen Ma Jianxin Zou Darvaish Khan Wen Zhu Chuanzhu Hu Xiaoqin Zeng Wenjiang Ding national Engineering research center of Light Alloys Net Forming&State Key Laboratory of Metal Matrix Composites Shanghai Jiao Tong UniversityShanghai 200240China Shanghai Engineering research center of Mg Materials and Applications&School of Materials Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China center of Hydrogen Science Shanghai Jiao Tong UniversityShanghai 200240China

Two kinds of metal-organic frameworks(MOFs) based on Co(Ⅱ) and Fe(Ⅱ) as metal ions and trimasic acid(TMA) as organic linker were synthesized. They were used to prepare corresponding Mg H2-TM MOF(TM = Co, Fe) composites via ball-milling. X-ray diffraction analyses show the formation of Mg2 Co and α-Fe phases in Mg H2-TMMOF composites after decomposition. Both of the well dispersed Mg2Co andα-Fe nanoparticles exhibit considerable catalytic efficiency in accelerating the sorption kinetics of Mg *** dehydrogenated MgH2-Fe MOF composite shows faster hydriding kinetics than the pure Mg H2 and Mg H2-CoMOF. Meanwhile, the apparent dehydrogenation activation energy(Ed) of the Mg H2-Co MOF and Mg H2-Fe MOF composites are 151.3 ± 9.4 and 142.3 ± 6.5 kJ/mol H2, both of which are lower than that of pure Mg H2(181.4 ± 9.2 kJ/mol H2). The improvement on the sorption kinetics of the Mg H2-TM MOF powders is mainly attributed to the catalytic effects of nano-sized Mg2 Co and α-Fe formed on the surface of Mg/Mg H2 particles.

关键词： TMA-TM MOFs Mg hydride Catalytic effects Kinetic property

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Long-term exposure to titanium dioxide nanoparticles promotes diet-induced obesity through exacerbating intestinal mucus layer damage and microbiota dysbiosis

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Nano research 2021年第5期14卷 1512-1522页

作者： Xiaoqiang Zhu Lijun Zhao Zhi Liu Qibing Zhou Yanhong Zhu Yuliang Zhao Xiangliang Yang national Engineering research center for Nanomedicine College of Life Science and TechnologyHuazhong University of Science and TechnologyWuhan430074China Department of Biotechnology College of Life Science and TechnologyHuazhong University of Science and TechnologyWuhan430074China CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety National Center for Nanoscience and Technology of ChinaBeijing100190China

Titanium dioxide nanoparticles (TiO2-NPs) are commonly used as food additives, including some high-fat foods that are risk factors for obesity. However, little is known about the effects of chronic TiO2-NPs digestion in the population on high fat diet (HFD). Herein, we reported that TiO2-NPs exacerbated HFD-induced obesity by disruption of mucus layer and alterations of gut microbiota. Oral intake of TiO2-NPs significantly increased body weight, liver weight, and amount of adipose tissues, especially in HFD-fed mice. Mechanistic studies revealed TiO2-NPs induced colonic mucus layer disruption and obesity-related microbiota dysbiosis. The damage on mucus was demonstrated through down-regulation of Muc2 gene and the absorption of mucin protein by TiO2-NPs. Consequently, mucus layer damage combined microbiota dysbiosis escalated the low-grade systemic inflammation, which exacerbated HFD-induced obesity. In contrast, gut microbiota depletion eliminated these effects, indicating gut microbiota were necessary for TiO2-NPs-induced inflammation and obesity. All the results stated the alarming role of TiO2-NPs in the HFD-driven obesity and emphasized the reevaluating the health impacts of nanoparticles commonly used in daily life, particularly, in susceptible population.

关键词： titanium dioxide nanoparticles nanosafety obesity mucus layer gut microbiota

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Diversity,Geography,and Host Range of Emerging Mosquito-Associated Viruses—China,2010–2020

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China CDC weekly 2021年第35期3卷 746-750,I0002,I0003,I0004页

作者： Yuan Fang Tian Hang Jinbo Xue Yuanyuan Li Lanhua Li Zixin Wei Limin Yang Yi Zhang national Institute of Parasitic Diseases Chinese Center for Disease Control and Prevention(Chinese Center for Tropical Diseases Research)NHC Key Laboratory of Parasite and Vector BiologyWHO Collaborating Centre for Tropical DiseasesNational Center for International Research on Tropical DiseasesShanghaiChina School of Global Health Chinese Center for Tropical Diseases ResearchShanghai Jiao Tong University School of MedicineShanghaiChina School of Publish Health Weifang Medical UniversityWeifangShandongChina.

Epidemics of emerging and neglected infectious diseases are severe threats to public health and are largely driven by the promotion of globalization and by international multi-border *** viruses are among the most important agents of these diseases,with an associated mortality of over one million people worldwide(1).The well-known mosquito-borne diseases(MBDs)with global scale include malaria,dengue fever,chikungunya.

关键词： diseases mortality neglected

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