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Artificial synthesis of polyesters at ambient condition via consecutive CO_(2)electrolysis and fermentation

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Nano Research 2024年第7期17卷 6016-6025页

作者： guiru Zhang Ning Ji Shiheng Lyu Baoxin Ni Peng Shen Ke Ye Yuting Wang Xuheng Jiang Hai Zhang Xi liu Yongcheng Wang Kun Jiang Department of Laboratory Medicine of The First Affiliated Hospital&Liangzhu Laboratory Zhejiang University School of MedicineHangzhou 310058China Interdisciplinary Research Center School of Mechanical EngineeringShanghai Jiao Tong UniversityShanghai 200240China In-situ Centre for Physical Sciences Frontiers Science Center for Transformative MoleculesSchool of Chemistry and Chemical EngineeringShanghai Jiao Tong UniversityShanghai 200240China

Electrochemically converting CO_(2)into value-added chemicals is a promising approach to mitigate anthropogenic carbon emissions,yet largely limited to short-chained C_(1)–C_(3)***,we demonstrate a tandem artificial synthesis of biodegradable polyhydroxybutyrate(PHB)plastic from CO_(2)building *** synthesis of defects-enriched Bi catalyst is firstly demonstrated by plasma bombardment and following in situ electrochemical reduction,which delivers a HCOOH Faradaic efficiency above 80%at tunable concentration from 2 to 250 mM,an energy efficiency up to 41%,and a single-pass carbon conversion efficiency up to 60%.Annular dark field and second electron microscopic analysis,density functional theory(DFT)calcualtions,coupled with H-type and solid-state electrolyzer assessments,point out the vital role of defective and/or stepped Bi surface sites in promoting CO_(2)-to-HCOOH ***,as-synthesized high-purity HCOOH is used as the sole carbon source for C-chain growth within microbial fermentation reactor with Ralstonia eutropha,where activated formate dehydrogenase and increased metabolites related to Calvin–Benson–Bassham cycle are found to be responsible for the enhanced polyester accumulation.

关键词： CO_(2)electrolysis Bi catalyst vacancy site formic acid fermentation

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供应链溢出效应下企业数字化转型的动因研究

管理学报 2024年第6期21卷 938-947页

作者：刘晨王俊秋花贵如上海立信会计金融学院会计学院华东理工大学商学院

基于企业-客户关系数据,从供应链溢出视角探究企业数字化转型的动因。以2010~2020年沪深A股上市公司为样本,研究发现,客户数字化转型具有供应链溢出效应,能够驱动企业数字化转型,上述结果主要体现在资源基础和动态能力处于中等水平、客... 详细信息

基于企业-客户关系数据,从供应链溢出视角探究企业数字化转型的动因。以2010~2020年沪深A股上市公司为样本,研究发现,客户数字化转型具有供应链溢出效应,能够驱动企业数字化转型,上述结果主要体现在资源基础和动态能力处于中等水平、客户集中度较高以及与客户地理距离较近的企业。进一步检验发现,客户数字化转型通过倒逼效应和资源效应驱动企业数字化转型,且当客户数字化转型程度较高时,企业数字化转型对其市场地位的提升作用更加明显。

关键词：数字化转型供应链溢出市场地位

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Optimal confrontation position selecting games model and its application to one-on-one air combat

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Defence Technology（防务技术） 2024年第1期31卷 417-428页

作者： Zekun Duan Genjiu Xu Xin liu Jiayuan Ma Liying Wang School of Mathematics and Statistics Northwestern Polytechnical UniversityXi'an 710072China International Joint Research Center on Operations Research Optimization and Artificial IntelligenceXi'an 710129China AVIC Xi’an Aeronautics Computing Technique Research Institute Xi'an 710065China Unmanned System Research Institute Northwestern Polytechnical UniversityXi'an 710072China

In the air combat process,confrontation position is the critical factor to determine the confrontation situation,attack effect and escape probability of ***,selecting the optimal confrontation position becomes the primary goal of maneuver *** taking the position as the UAV’s maneuver strategy,this paper constructs the optimal confrontation position selecting games(OCPSGs)*** the OCPSGs model,the payoff function of each UAV is defined by the difference between the comprehensive advantages of both sides,and the strategy space of each UAV at every step is defined by its accessible space determined by the *** we design the limit approximation of mixed strategy nash equilibrium(LAMSNQ)algorithm,which provides a method to determine the optimal probability distribution of positions in the strategy *** the simulation phase,we assume the motions on three directions are independent and the strategy space is a cuboid to simplify the *** simulations are performed to verify the feasibility,effectiveness and stability of the algorithm.

关键词： Unmanned aerial vehicles(UAVs) Air combat Continuous strategy space Mixed strategy nash equilibrium

Binary Bacillus subtilis protects the intestinal mucosa barrier and alleviates nonalcoholic steatohepatitis

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Animal Models and Experimental Medicine 2024年第3期7卷 362-366页

作者： Donglin liu Pengguo Chen Department of Gastroenterology Jiangxi Provincial People's HospitalThe First Affiliated Hospital of Nanchang Medical CollegeNanchangJiangxiChina

Background:Nonalcoholic steatohepatitis(nash)is characterized by liver steatosis,inflammation,and even *** is likely to develop into cirrhosis and liver cancer,the major causes of liver related *** aimed to study the effect of probiotics on nash via the gut-l iver ***:Thirty male Sprague-Dawley rats were divided into three groups.A control group of 10 rats was fed on a standard chow for 16 *** rats fed on a high-fat diet for 8 weeks were separated to two groups:a model group(10 rats)fed on vehicle for 8 weeks and a treatment group(10 rats)supplemented with binary Bacillus subtilis for 8 *** expression of IL-6 and TNF-ɑand ileum expression of IL-17 and occludin were ***:The high-fat diet caused inflammation of the liver and ileum in *** Bacillus subtilis treatment reduces liver inflammation through the intestinal liver *** levels of IL-6 and TNF-αwere detected in rats fed a high-fat diet,which were reduced to lower levels after treatment with binary Bacillus *** rats on the high-fat diet,elevated IL-17 levels and decreased occludin levels were *** with Bacillus subtilis reduced IL-17 levels and restored the expression of ***:Binary Bacillus subtilis has a beneficial effect on liver inflammation and intestinal damage.

关键词： non-alcoholic steatohepatitis

Pt supported on Zn modified silicalite-1 zeolite as a catalyst for n-hexane aromatization

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Journal of Energy Chemistry 2019年第7期28卷 96-103页

作者： Guodong liu Jiaxu liu Ning He Shishan Sheng guiru Wang Hongchen Guo Department of Catalytic Chemistry and Engineering&State Key Laboratory of Fine Chemicals Dalian University of TechnologyDalian 116012LiaoningChina State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina

Platinum(Pt)supported on Zinc(Zn)modified silicalite-1(S-1)zeolite(denoted as Pt-Zn/S-1)was prepared by using a wetness-impregnation method and applied in the n-hexane aromatization reaction for the first *** Lewis and Bronsted acid sites were detected in Pt-Zn/S-1 catalyst by means of FT-IR adsorption of NH3 experiment,which were identified as mostly weak and medium ***,Pt and Zn species showed strong interaction,as revealed by the TPR(Temperature-programmed reduction)and XPS(X-ray photoelectron spectroscopy)***-Zn/S-1 catalyst exhibited excellent aromatization function rather than isomerization and cracking side reactions in the conversion of *** experimental study showed that 75.6%of n-hexane conversion and 76.8%of benzene selectivity were obtained over Pt0.1-Zn60/S-l catalyst at 550℃ and under atmospheric *** spectroscopy tests and pulse experimental results,it was concluded that the n-hexane aromatization over Pt-Zn/S-1 catalyst follows a metal-acid bifunctional ***,with the assistance of Zn,the electron-deficient Pt species in Pt-Zn/S-1 showed good sulfur tolerance performance.

关键词： Silicalite-1 zeolite Pt-Zn/Silicalite-1 n-Hexane aromatization Sulfur-resistance

Multi-Timescale Distributed Approach to Generalized-nash-Equilibrium Seeking in Noncooperative Nonconvex Games

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IEEE/CAA Journal of Automatica Sinica 2024年第3期11卷 791-793页

作者： Banghua Huang Yang liu Kit Ian Kou Weihua Gui the School of Mathematical Sciences Zhejiang Normal UniversityJinhua 321004China IEEE the Key Laboratory of Intelligent Education Technology and Application of Zhejiang Province Jinhua 321004China the Faculty of Science and Technology University of MacaoMacaoChina the School of Automation Central South UniversityChangsha 410083China

Dear Editor,The distributed generalized-nash-equilibrium(GNE)seeking in noncooperative games with nonconvexity is the topic of this *** by the sequential quadratic programming(SQP)method,a multi-timescale multi-agent system(MAS)is developed,and its convergence to a critical point of the game is *** illustrate the qualities and efficacy of the theoretical findings,a numerical example is elaborated.

关键词： letter seeking programming

Fixed-Time Consensus-Based nash Equilibrium Seeking

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IEEE/CAA Journal of Automatica Sinica 2024年第1期11卷 267-269页

作者： Mengwei Sun Jian liu Lu Ren Changyin Sun the Institutes of Physical Science and Information Technology Anhui UniversityHefei 230601China IEEE the School of Automation and the Key Laboratory of Measurement and Control of Complex System of Engineering Ministry of EducationSoutheast UniversityNanjing 210096China the School of Artificial Intelligence and the Engineering Research Center of Autonomous Unmanned System Technology Ministry of EducationAnhui UniversityHefei 230601China

Dear Editor,This letter examines the fixed-time stability of the nash equilibrium(NE)in non-cooperative *** propose a consensus-based NE seeking algorithm for situations where players do not have perfect information and communicate via a topology *** proposed algorithm can achieve NE in a fixed time that does not depend on initial conditions and can be adjusted in advance.

关键词： Fixed seeking letter

Bi-level Multi-leader Multi-follower Stackelberg Game Model for Multi-energy Retail Package Optimization

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Journal of Modern Power Systems and Clean Energy 2024年第1期12卷 225-237页

作者： Hongjun Gao Hongjin Pan Rui An Hao Xiao Yanhong Yang Shuaijia He Junyong liu the College of Electrical Engineering Sichuan UniversityChengdu 610065China the Electric Power Research Institute State Grid Jiangsu Electric Power CompanyNanjing 211100China the Institute of Electrical Engineering Chinese Academy of SciencesBeijing 100190China

In the competitive energy market,energy retailers are facing the uncertainties of both energy price and demand,which requires them to formulate reasonable energy purchasing and selling strategies for improving their competitiveness in this ***,the attractive multi-energy retail packages are the key for retailers to increase their ***,combined with incentive means and price signals,five types of multi-energy retail packages such as peak-valley time-of-use(TOU)price package and day-night bundled price package are designed in this paper for *** iterative interactions between retailers and end-users are modeled using a bi-level model of stochastic optimization based on multi-leader multi-follower(MLMF)Stackelberg game,in which retailers are leaders and end-users are *** make decisions to maximize the profit considering the conditional value at risk(CVaR)while end-users optimize the satisfaction of both energy comfort and ***,a distributed algorithm is proposed to obtain the nash equilibrium of above MLMF Stackelberg game model while the particle swarm optimization(PSO)algorithm and CPLEX solver are applied to solve the optimization model for each participant(retailer or end-user).Numeral results show that the designed retail packages can increase the overall profit of retailers,and the overall satisfaction of industrial users is the highest while that of residential users is the lowest after game interaction.

关键词： Conditional value at risk(CVaR) energy retailer multi-energy retail package design multi-leader multi-follower(MLMF)Stackelberg game satisfaction

Prescribed-Time nash Equilibrium Seeking for Pursuit-Evasion Game

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IEEE/CAA Journal of Automatica Sinica 2024年第6期11卷 1518-1520页

作者： Lei Xue Jianfeng Ye Yongbao Wu Jian liu D.C.Wunsch Key Laboratory of Measurement and Control of Complex Systems of Engineering Ministry of EducationNanjing 210096 School of Automation Southeast UniversityNanjing 210096China Department of Electrical and Computer Engineering Missouri University of Science and TechnologyRollaMO 65409 USA IEEE

Dear Editor,This letter is concerned with prescribed-time nash equilibrium(PTNE)seeking problem in a pursuit-evasion game(PEG)involving agents with second-order *** order to achieve the prior-given and user-defined convergence time for the PEG,a PTNE seeking algorithm has been developed to facilitate collaboration among multiple pursuers for capturing the evader without the need for any global ***,it is theoretically proved that the prescribedtime convergence of the designed algorithm for achieving nash equilibrium of ***,the effectiveness of the PTNE method was validated by numerical simulation results.A PEG consists of two groups of agents:evaders and *** pursuers aim to capture the evaders through cooperative efforts,while the evaders strive to evade *** is a classic noncooperative *** has attracted plenty of attention due to its wide application scenarios,such as smart grids[1],formation control[2],[3],and spacecraft rendezvous[4].It is noteworthy that most previous research on seeking the nash equilibrium of the game,where no agent has an incentive to change its actions,has focused on asymptotic and exponential convergence[5]-[7].

关键词： seeking prescribed convergence