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Direct electrochemical N-doping to carbon paper in molten LiCl-KCl-Li3N

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International Journal of Minerals,Metallurgy and Materials 2020年第12期27卷 1687-1694页

作者： Dong-hua Tian Zhen-chao han ming-yong Wang Shu-qiang Jiao State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China

Graphite materials are widely used as electrode materials for electrochemical energy storage.N-doping is an effective method for enhancing the electrochemical properties of graphite.A novel one-step N-doping method for complete and compact carbon paper was proposed for molten salt electrolysis in the Li Cl-KCl-Li3 N *** results show that the degree of graphitization of carbon paper can be improved by the electrolysis of molten salts,especially at 2.0 *** gas was produced at the anode and nitrogen atoms can substitute carbon atoms of carbon paper at different sites to create nitrogen doping during the electrolysis *** doping content of N in carbon paper is up to 13.0 wt%.There were three groups of nitrogen atoms,*** N(N-Q),pyrrolic N(N-5),and pyridinic N(N-6)in N-doping carbon paper.N-doping carbon paper as an Al-ion battery cathode shows strong charge-recharge properties.

关键词： N-doping carbon paper molten salt electrolysis electrochemical process

Fluorescent lamp promoted formaldehyde removal over CeO_(2) catalysts at ambient temperature

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Journal of Rare Earths 2022年第6期40卷 906-915,I0002页

作者： Zhaoxiong Yan Gang Huang Geming Wang ming Xiang Xiaofang han Zhihua Xu Hubei Key Laboratory of Industrial Fume and Dust Pollution Control Jianghan UniversityWuhan 430056China School of Materials Science and Engineering Wuhan Institute of TechnologyWuhan 430205China School of Chemistry and Chemical Engineering Wuhan University of Science and TechnologyWuhan 430081China

Exploring an alternative strategy with high efficiency and low cost to abate formaldehyde(HCHO)in indoor environment,is of increasing significance for people’s ***_(2) catalysts prepared by hydrothermal,precipitation and calcination methods were investigated for HCHO removal at ambient *** is found that indoor fluorescent light visibly boosts the catalytic performance of CeO_(2) catalysts for HCHO decomposition at ambient *** the CeO_(2) catalysts,CeO_(2) prepared from hydrothermal method(CeO_(2)-H)exhibits a superior catalytic performance and an excellent durability by eight recycle *** on the characterization and analysis,the excellent catalytic performance of CeO_(2)-H is mainly contributed by its abundance of surface oxygen vacancies,and photogenerated electrons and hole activated by fluorescent *** work shows a potential practicability in HCHO pollution elimination by taking full advantage of the existing lighting in indoor environments.

关键词： HCHO abatement CeO_(2)catalyst Preparation method Oxygen vacancy Fluorescent light irradiation Rare earths

A new perspective on polyethylene-promoted lignin pyrolysis with mass transfer and radical explanation

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Green Energy & Environment 2022年第6期7卷 1318-1326页

作者： Yuyang Fan chao Liu Xiangchen Kong Yue han ming Lei Rui Xiao Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education School of Energy and EnvironmentSoutheast UniversityNanjing210096China

Co-pyrolysis of lignin and waste plastics,for example polyethylene(PE),has been studied,but related reports are basically on condition *** study revealed a new perspective on PE-promoted lignin pyrolysis to phenolic monomers with mass transfer and radical *** and PE were first pyrolyzed individually to identify pyrolysis characteristics,pyrolytic products,as well as the suitable copyrolysis ***,co-pyrolysis of blended lignin/PE with various ratios was *** of lignin products reached the maximum under lignin/PE ratio of 1:1,but blended approach always inhibited the production of lignin *** resulted from the poor mass transfer and interactions between lignin and PE,in which PE pyrolysates could easily escape from the particle *** in layered approach,PE pyrolysates had to pass through the lignin layer which contributed to the good interactions with lignin pyrolysis intermediates,thus the yields of lignin-derived products were significantly *** between lignin and PE(or their pyrolysates)were mainly radical quenching reactions,and X-ray photoelectron spectrum(XPS)and electron paramagnetic resonance(EPR)of pyrolytic chars were conducted to verify these interactions controlled by mass *** percentage of C]C(sp^(2))and concentration of organic stable radicals in layered lignin/PE char were both the lowest compared with those in blended lignin/PE and lignin char,indicating the stabilization of lignin-derived radicals by PE ***,the spin concentration of radicals in the char from layered char/PE was lower than that in lignin char,which further affirmed the quenching of radicals by PE in the layered co-pyrolysis mode.

关键词： Lignin Polyethylene Pyrolysis Radical Mechanism

Precipitation of μ Phase in Nickel-based Powder Metallurgy Superalloy FGH97

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Journal of Iron and Steel Research International 2016年第8期23卷 851-856页

作者： Li-ming TAN Yi-wen ZhanG Jian JIA Shou-bo han High Temperature Material Institute Central Iron and Steel Research Institute Beijing 100081 China Beijing Key Laboratory of Advanced High Temperature Materials Beijing 100081 China

The precipitation behavior of topological close-packed（TCP）μphase in powder metallurgy（P/M）nickelbased superalloy FGH97 was *** results showed that proper addition of solution strengthening elements,such as Co,Cr,W,Mo,improved tensile strength,while excessive addition of those elements facilitated the precipitation ofμphase,which seriously aggravated the plasticity of the P/M *** the heat-treated specimens,the relationship between critical aging time（whenμstarted to precipitate）,aging temperature,and the average electron vacancy number ofγmatrix was established.

关键词： superalloy precipitate tensile plasticity seriously Precipitation topological strengthening packed metallurgy

SOFT CONTROL ON COLLECTIVE BEHAVIOR OF A GROUP OF AUTONOMOUS AGENTS BY A SHILL AGENT

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Journal of Systems Science & Complexity 2006年第1期19卷 54-62页

作者： Jing han ming LI Lei GUO Institute of Systems Science Academy of Mathematics and Systems Science Chinese Academy of Sciences Beijing 100080 China Institute of Theoretical Physics Chinese Academy of Sciences Beijing 100080 China Academy of Mathematics and Systems Science Chinese Academy of Sciences Beijing 100080 China

This paper asks a new question： how can we control the collective behavior of self-organized multi-agent systems？ We try to answer the question by proposing a new notion called ＇Soft Control＇ which keeps the local rule of the existing agents in the system. We show the feasibility of soft control by a case study. Consider the simple but typical distributed multi-agent model proposed by Vicsek et al. for flocking of birds： each agent moves with the same speed but with different headings which are updated using a local rule based on the average of its own heading and the headings of its neighbors. Most studies of this model are about the self-organized collective behavior, such as synchronization of headings. We want to intervene in the collective behavior （headings） of the group by soft control. A specified method is to add a special agent, called a ＇Shill＇, which can be controlled by us but is treated as an ordinary agent by other agents. We construct a control law for the shill so that it can synchronize the whole group to an objective heading. This control law is proved to be effective analytically and numerieally. Note that soft control is different from the approach of distributed control. It is a natural way to intervene in the distributed systems. It may bring out many interesting issues and challenges on the control of complex systems.

关键词： Bold model collective behavior multi-agent system shill agent soft control.

Clinical benefit of COX-2 inhibitors in the adjuvant chemotherapy of advanced non-small cell lung cancer: A systematic review and metaanalysis

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World Journal of Clinical Cases 2021年第3期9卷 581-601页

作者： Yu-Qiong Xu Xiang Long ming han ming-Qiang Huang Jia-Fa Lu Xue-Dong Sun Wei han Department of Emergency Medicine Shenzhen University General HospitalShenzhen University Clinical Medical AcademyShenzhen 518000Guangdong ProvinceChina Department of Respiratory and Critical Care Medicine Peking University Shenzhen HospitalShenzhen 518000Guangdong ProvinceChina

BACKGROUND Lung cancer is a major cause of death among patients,and non-small cell lung cancer(NSCLC)accounts for more than 80%of all lung cancers in many *** To evaluate the clinical benefit(CB)of COX-2 inhibitors in patients with advanced NSCLC using systematic *** We searched the six electronic databases up until December 9,2019 for studies that examined the efficacy and safety of the addition of COX-2 inhibitors to chemotherapy for *** survival(OS),progression free survival(PFS),1-year survival rate(SR),overall response rate(ORR),CB,complete response(CR),partial response(PR),stable disease(SD),and toxicities were measured with more than one outcome as their *** and random effects models were used to calculate risk estimates in a *** publication bias was calculated using Egger’s linear regression *** analysis was performed using R *** The COX-2 inhibitors combined with chemotherapy were not found to be more effective than chemotherapy alone in OS,progression free survival,1-year SR,CB,CR,and ***,there was a difference in overall response rate for patients with advanced *** a subgroup analysis,significantly increased ORR results were found for celecoxib,rofecoxib,first-line treatment,and *** adverse events,the increase in COX-2 inhibitor was positively correlated with the increase in grade 3 and 4 toxicity of leukopenia,thrombocytopenia,and cardiovascular *** COX-2 inhibitor combined with chemotherapy increased the total effective rate of advanced NSCLC with the possible increased risk of blood toxicity and cardiovascular events and had no effect on survival index.

关键词： Non-small cell lung cancer COX-2 Survival Progression free survival Systematic review Randomized controlled trials

Accuracy Evaluation of Marginalized Unscented Kalman Filter

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Space(Science & Technology) 2023年第1期3卷 597-605页

作者： han Yan hanyu Liu Xiucong Sun ming Xu National Key Laboratory of Space Intelligent Control Beijing Institute of Control EngineeringBeijingChina Beijing Sun Wise Space Technology Ltd BeijingChina Beihang University BeijingChina

Compared with a conventional unscented Kalman filter(UKF),the recently proposed marginalized unscented Kalman filter(MUKF)uses a partially sampling strategy to achieve similar filter accuracy with fewer sigma points,demonstrating its powerful ability to deal with state estimation with mixed linearity and ***,the hypothesis that the accuracy of MUKF is equivalent to that of UKF is not true for all *** this paper,it is proved that when the state equation is expressed as a differential equation,the accuracy of MUKF is equivalent to that of UKF only when the propagations of the states to be sampled and the states not to be sampled in MUKF are independent of each *** above condition corresponds to a common problem in engineering,which is a system with measurement *** theoretical proof and numerical simulation,it is verified in this paper that for the systems with measurement biases,the differences of the computed means and covariances in filtering recursions between MUKF and UKF are restricted to the same order infinitesimal as the square of the scaling *** sum up,this paper evaluates the accuracy of MUKF,providing references for engineers to choose MUKF or UKF in different systems.

关键词： filtering equation scaling

Current status of novel biologics and small molecule drugs in the individualized treatment of inflammatory bowel disease

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World Journal of Gastroenterology 2022年第48期28卷 6888-6899页

作者： Yi-han Xu Wei-ming Zhu Zhen Guo Department of General Surgery Affiliated Jinling HospitalMedical School of Nanjing UniversityNanjing 210002Jiangsu ProvinceChina

Treatment strategies for inflammatory bowel disease(IBD)are rapidly evolving with the development of biologics and small molecule drugs(SMDs).However,these drugs are not guaranteed to be effective in all patients,and a“ceiling effect”of biologic monotherapy may *** issue highlights an unmet need for optimizing the use of biologics and predicting therapeutic ***,the development of new drugs with novel mechanisms of action is urgently needed for patients with primary nonresponse and secondary loss of response to conventional biologics and *** addition,combining different biologics or SMDs has been proposed as a novel strategy to enhance treatment efficacy in IBD,which theoretically has multidimensional anti-inflammatory *** on the current evidence available for IBD,dual targeted therapy may be a promising strategy for refractory IBD patients who have failed in multiple biologic treatments or who have extraintestinal ***,identifying the subgroup of IBD patients who are responding to biological combination therapies is also equally important in stable disease *** this review,we summarize the newly developed biologics and SMDs and the current status of biologics/SMDs to highlight the development of individualized treatment in IBD.

关键词： Inflammatory bowel diseases Biologic Dual targeted therapy Therapeutic drug monitoring Bispecific antibodies

Application of SSOR-PCGM with improved iteration format in FEM simulation of massive concrete

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Water Science and Engineering 2011年第3期4卷 317-328页

作者： Lin han Zi-ming ZhanG Zhi-qiang NI College of Mechanics and Materials Hohai University Nanjing 210098 P. R. China

In this study, for the purpose of improving the efficiency and accuracy of numerical simulation of massive concrete, the symmetric successive over relaxation-preconditioned conjugate gradient method （SSOR-PCGM） with an improved iteration format was derived and applied to solution of large sparse symmetric positive definite linear equations in the computational process of the finite element analysis. A three-dimensional simulation program for massive concrete was developed based on SSOR-PCGM with an improved iteration format. Then, the programs based on the direct method and SSOR-PCGM with an improved iteration format were used for computation of the Guandi roller compacted concrete （RCC） gravity dam and an elastic cube under free expansion. The comparison and analysis of the computational results show that SSOR-PCGM with the improved iteration format occupies much less physical memory and can solve larger-scale problems with much less computing time and flexible control of accuracy.

关键词： massive concrete symmetric successive over relaxation-preconditioned conjugate gradient method (SSOR-PCGM) improved iteration Jbrmat .finite element method (FEM) numerical simulation