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Journal of Modern Power Systems and Clean Energy 2024年第2期12卷 454-465页

作者： Yuxuan Zhuang Zhiyi Li qipeng.tan Yongqi Li Minhui Wan College of Electrical Engineering Zhejiang UniversityHangzhouChina China Southern Power Grid Power Generation Company Energy Storage Research Institute GuangzhouChina IEEE

The push for renewable energy emphasizes the need for energy storage systems(ESSs)to mitigate the unpre-dictability and variability of these sources,yet challenges such as high investment costs,sporadic utilization,and demand mismatch hinder their broader *** response,shared energy storage systems(SESSs)offer a more cohesive and efficient use of ESS,providing more accessible and cost-effective energy storage solutions to overcome these *** enhance the profitability of SESSs,this paper designs a multi-time-scale resource allocation strategy based on long-term contracts and real-time rental business *** initially construct a life cycle cost model for SESS and introduce a method to estimate the degradation costs of multiple battery groups by cycling numbers and depth of discharge within the ***,we design various long-term contracts from both capacity and energy perspectives,establishing associated models and real-time rental ***,multi-time-scale resource allocation based on the decomposition of user demand is *** analysis validates that the business model based on long-term contracts excels over models operating solely in the real-time market in economic viability and user satisfaction,effectively reducing battery degradation,and leveraging the aggregation effect for SESS can generate an additional increase of 10.7%in net revenue.

关键词： Capacity allocation long-term contracts shared energy storage system stochastic programming

Synthetic auxotrophs accelerate cell factory development through growth-coupled models

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Frontiers of Chemical Science and Engineering 2024年第9期18卷 73-87页

作者： Liangpo Li Linwei Yu Xinxiao Sun qipeng Yuan Xiaolin Shen Jia Wang State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical TechnologyBeijing 100029China

The engineering of microbial cell factories for the production of high-value chemicals from renewable resources presents several challenges,including the optimization of key enzymes,pathway fluxes and metabolic *** these challenges involves the development of synthetic auxotrophs,a strategy that links cell growth with enzyme properties or biosynthetic *** linkage allows for the improvement of enzyme properties by in vivo directed enzyme evolution,the enhancement of metabolic pathway fluxes under growth pressure,and remodeling of metabolic networks through directed strain *** advantage of employing synthetic auxotrophs lies in the power of growth-coupled selection,which is not only high-throughput but also labor-saving,greatly simplifying the development of both strains and *** auxotrophs play a pivotal role in advancing microbial cell factories,offering benefits from enzyme optimization to the manipulation of metabolic networks within single ***,this strategy extends to coculture systems,enabling collaboration within microbial *** review highlights the recently developed applications of synthetic auxotrophs as microbial cell factories,and discusses future perspectives,aiming to provide a practical guide for growth-coupled models to produce value-added chemicals as part of a sustainable biorefinery.

关键词： synthetic auxotrophs growth-coupled directed enzyme evolution pathway flux directed strain evolution coculture

Micromechanical modeling of longitudinal tensile behavior and failure mechanism of unidirectional carbon fiber/aluminum composites involving fiber strength dispersion

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CHINESE JOURNAL OF AERONAUTICS 2024年第9期37卷 312-327页

作者： Liu, qipeng Jiang, Wengang Gao, Yuehua Wang, Zhenjun Shi, Shanshan Sun, Zhi Nanchang Hangkong Univ Jiangxi Key Lab Forming & Joining Technol Aerosp C Nanchang 330063 Peoples R China Dalian Jiaotong Univ Sch Locomot & Rolling Stock Engn Dalian 116028 Peoples R China Dalian Univ Technol State Key Lab Struct Anal Optimizat & CAE Software Dalian 116024 Peoples R China

This paper examines the longitudinal tensile behavior and failure mechanism of a new unidirectional carbon fiber reinforced aluminum composite through experiments and simulations. A Weibull distribution model was established to describe the fiber strength dispersion based on single-fiber tensile tests for carbon fibers extracted from the composite. The constitutive models for the matrix and interface were established based on the uniaxial tensile and single-fiber pushout tests, respectively. Then, a 3D micromechanical numerical model, innovatively considering the fiber strength dispersion by use of the weakest link and Weibull distribution theories, was established to simulate the progressive failure behavior of the composite under longitudinal tension. Due to the dispersion of fiber strength, the weakest link of the fiber first fractures, and stress concentration occurs in the surrounding fibers, interfaces, and matrix. The maximum stress concentration factor for neighboring fibers varies nonlinearly with the distance from the fractured fiber. Both isolated and clustered fractured fibers are present during the progressive failure process of the composite. The expansion of fractured fiber clusters intensifies stress concentration and material degradation which in turn enlarges the fractured fiber clusters, and their mutual action leads to the final collapse of the composite. (c) 2024 Production and hosting by Elsevier Ltd. on behalf of Chinese Society of Aeronautics and Astronautics. This is an open access article under the CC BY-NC-ND license (http://***/ licenses/by-nc-nd/4.0/).

关键词： Fiber reinforced metals Finite element method 3D micromechanical model Fiber strength dispersion Longitudinal tension Progressive failure METAL-MATRIX COMPOSITES REINFORCED ALUMINUM DEFORMATION MECHANISMS HYBRIDIZATION FABRICATION PULLOUT AL2O3 ALLOY

New process for treating boron-bearing iron ore by flash reduction coupled with magnetic separation

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International Journal of Minerals,Metallurgy and Materials 2024年第3期31卷 473-484页

作者： qipeng Bao Lei Guo Hong Yong Sohn Haibin Zuo Feng Liu Yongliang Gao Zhancheng Guo State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China Department of Materials Science&Engineering University of UtahUtah 84112USA China ENFI Engineering Corporation Beijing 100038China

Boron is an important industrial raw material often sourced from minerals containing different compounds that cocrystallize,which makes it difficult to separate the mineral phases through conventional *** study proposed a new treatment called flash reduction-melting separation(FRMS)for boron-bearing iron *** this method,the concentrates were first flash-reduced at the temperature under which the particles melt,and the slag and the reduced iron phases disengaged at the particle *** reduc-tion and melting effects were achieved above 1550℃.The B_(2)O_(3) content in the separated slag was over 18wt%,and the B content in the iron was less than 0.03wt%.The proposed FRMS method was tested to investigate the effects of factors such as ore particle size and tem-perature on the reduction and melting steps with and without pre-reducing the raw *** mineral phase transformation and morphology evolution in the ore particles during FRMS were also comprehensively analyzed.

关键词： ludwigite boron-bearing iron concentrate flash reduction melting separation boron

GST family genes in jujube actively respond to phytoplasma infection

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Horticultural Plant Journal 2024年第1期10卷 77-90页

作者： qipeng Wang Liman Zhang Chaoling Xue Yao Zhang Xiangrui Meng Zhiguo Liu Mengjun Liu Jin Zhao College of Life Science Hebei Agricultural UniversityBaodingHebei 071000China Hebei Key Laboratory of Plant Physiology and Molecular Pathology Hebei Agricultural UniversityBaodingHebei 071000China Research Center of Chinese Jujube Hebei Agricultural UniversityBaodingHebei 071000China

Jujube witches’broom(JWB)caused by phytoplasma has a severely negative effect on multiple metabolisms in *** GST gene family in plants participates in the regulation of a variety of biotic and abiotic *** study aims to identify and reveal the changes in the jujube GST gene family in response to phytoplasma ***,70 ZjGSTs were identified in the jujube genome and divided into 8 *** them,the Tau-class,including 44 genes,was the *** analysis indicated that Tau-class genes were highly conserved among species,such as Arabidopsis,cotton,chickpea,and *** chromosome location analysis,37.1%of genes were clustered,and 8 of 9 gene clusters were composed of Tau class *** RT-PCR,qRT-PCR and enzyme activity detection,the results showed that the expression of half(20/40)of the tested ZjGSTs was inhibited by phytoplasma infection in field and tissue culture conditions,and GST activity was also significantly *** the resistant and susceptible varieties under phytoplasma infection,ZjGSTU49-ZjGSTU54 in the cluster IV showed opposite expression patterns,which may be due to functional divergence during *** upregulated genes(ZjGSTU45,ZjGSTU49,ZjGSTU59,and ZjGSTU70)might be involved in the process of jujube against *** yeast two-hybrid results showed that all 6 Tauclass proteins tested could form homodimers or ***,the comprehensive analysis of the jujube GST gene family revealed that ZjGSTs responded actively to phytoplasma ***,some screened genes(ZjGSTU24,ZjGSTU49-52,ZjGSTU70,and ZjDHAR10)will contribute to further functional studies of jujube-phytoplasma interactions.

关键词： Chinese jujube GST gene Family Phytoplasma Gene cluster Expression Protein interaction

Glutamatergic neurons of piriform cortex delay induction of inhalational general anesthesia

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Fundamental Research 2024年第4期4卷 829-840页

作者： Liang Zhou qipeng Ran Rulan Yi Huanyao tang Yu Zhang Tian Yu Key Laboratory of Brain Science Zunyi Medical UniversityZunyi 563003China Department of Anesthesiology Affiliated Hospital of Zunyi Medical UniversityZunyi 563003China Guizhou Key Laboratory of Anesthesia and Organ Protection Zunyi Medical UniversityZunyi 563003China

Since their clinical application in the 1840s,the greatest mystery surrounding general anesthesia(GA)is how different kinds of general anesthetics cause reversible unconsciousness,and the precise neural mechanisms underlying the *** past years,although many studies revealed the roles of cortex,thalamus,brainstem,especially the sleep-wake circuits in GA-induced loss of consciousness(LOC),the full picture of the neural circuit mechanism of GA is still largely *** studies have focused on the importance of other brain ***,we report that the activity of glutamatergic(Glu)neurons in the piriform cortex(PC),a critical brain region for odor encoding,began to increase during the LOC of GA and gradually recovered after recovery of *** lesions of the anterior PC(APC)neurons accelerated the induction time of isoflurane *** and optogenetic activation of APcGlu neurons prolonged isoflurane and sevoflurane anesthesia induction,whereas APcclu neuron inhibition displayed the opposite ***,the modification of APcclu neurons did not affect the induction or emergence time of propofol *** addition,odor processing may be partially involved in the induction of isoflurane and sevofurane GA regulated by APCclu *** conclusion,our findings reveal a critical role of APCGlu neurons in inhalational GA induction.

关键词： Piriform cortex Inhalationalgeneral anesthesia Glutamatergic Induction time odor

作为世界秩序“底层逻辑”的世界市场——兼论人类文明新形态的经济基础

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社会科学 2024年第2期 93-109页

作者：释启鹏北京外国语大学国际关系学院

世界秩序关乎所有国家的发展命运,然而主流国际关系理论一方面忽视了世界秩序得以形成的“过程性结构”,另一方面将世界秩序的变迁简单理解为霸权的此消彼长。针对这一认知偏差,文章以世界市场与政治思潮的错综交互为基础,为世界政治体... 详细信息

世界秩序关乎所有国家的发展命运,然而主流国际关系理论一方面忽视了世界秩序得以形成的“过程性结构”,另一方面将世界秩序的变迁简单理解为霸权的此消彼长。针对这一认知偏差,文章以世界市场与政治思潮的错综交互为基础,为世界政治体系的演进提供了四种概念化类型,即新秩序形成、霸权更迭、新方案失败以及旧秩序延续。其中,世界市场构成了世界秩序变迁的“底层逻辑”。1500年之前,世界市场有着多个中心,不同文明的国家处于相对平等的世界秩序之中,但随着以追求无限积累为目标的资本主义不断扩张,包容性、多中心的世界市场被等级制、单中心的世界体系所取代,战争、剥削与压迫成为世界秩序近五百年来最显著的特征。在这一体系中,霸权转移的基础源自世界市场主导权的转移。在21世纪之后,世界市场浮现多中心趋势,作为世界市场重要中心之一的中国,凭借其文明传统为世界秩序提供了新的蓝图。世界市场的结构性变化,为开创人类文明新形态创造了经济基础。

关键词：世界市场政治思潮世界秩序人类文明新形态

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纳米多孔介质中的流体流动

Engineering 2024年第1期32卷 138-151页

作者： Weiyao Zhu Bin Pan Zhen Chen Wengang Bu qipeng Ma Kai Liu Ming Yue School of Civil and Resource Engineering University of Science and Technology BeijingBeijing 100083China

Fluid flow at nanoscale is closely related to many areas in nature and technology(e.g.,unconventional hydrocarbon recovery,carbon dioxide geo-storage,underground hydrocarbon storage,fuel cells,ocean desalination,and biomedicine).At nanoscale,interfacial forces dominate over bulk forces,and nonlinear effects are important,which significantly deviate from conventional *** the past decades,a series of experiments,theories,and simulations have been performed to investigate fluid flow at nanoscale,which has advanced our fundamental knowledge of this ***,a critical review is still lacking,which has seriously limited the basic understanding of this *** herein,we systematically review experimental,theoretical,and simulation works on single-and multi-phases fluid flow at *** also clearly point out the current research gaps and future *** insights will promote the significant development of nonlinear flow physics at nanoscale and will provide crucial guidance on the relevant areas.

关键词： Transport in nanoporous media Multi-phase fluid dynamics Nonlinear flow mechanisms Nonlinear flow conservation equations Interfacial forces Molecular dynamics simulation

基于萤火虫优化模糊P&O的微生物燃料电池最大功率点跟踪

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太阳能学报 2024年第4期45卷 373-381页

作者：樊立萍陈其鹏沈阳化工大学信息工程学院沈阳110142 工业环境-资源协同控制与优化技术辽宁省高校重点实验室沈阳110142

针对微生物燃料电池产电量低、输出不稳定等问题,提出一种混合萤火虫优化和模糊改进扰动观测的最大功率点跟踪算法,利用双种群萤火虫算法的全局优化能力和模糊控制的逻辑推理能力产生更精确的控制信号,通过Boost变换器对等效负载进行动... 详细信息

针对微生物燃料电池产电量低、输出不稳定等问题,提出一种混合萤火虫优化和模糊改进扰动观测的最大功率点跟踪算法,利用双种群萤火虫算法的全局优化能力和模糊控制的逻辑推理能力产生更精确的控制信号,通过Boost变换器对等效负载进行动态调节。结果表明:基于双种群萤火虫优化-模糊扰动观测的最大功率点跟踪算法能以更快的速度追踪到并稳定在最大功率点,降低了稳态误差,抑制了功率振荡,提高了抗干扰能力,显著改善了微生物燃料电池的产电能力和供电质量。

关键词：微生物燃料电池最大功率跟踪模糊控制萤火虫算法

世界政治学视野下西方全球治理理论的缺陷及其克服

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教学与研究 2024年第5期 108-119页

作者：释启鹏陈想北京外国语大学国际关系学院北京100089

虽然主流学界长期以来报以极大热忱,但全球治理却在实践层面日渐遭遇困局。西方全球治理理论内嵌于自由主义世界政治体系,帝国主义是推动这一秩序形成的根本动力。而面对发展中国家普遍存在的国家性缺失问题,学者们却开出了“去国家化... 详细信息

虽然主流学界长期以来报以极大热忱,但全球治理却在实践层面日渐遭遇困局。西方全球治理理论内嵌于自由主义世界政治体系,帝国主义是推动这一秩序形成的根本动力。而面对发展中国家普遍存在的国家性缺失问题,学者们却开出了“去国家化”的药方。由此观之,西方全球治理理论的危机源自其自身的理论“硬核”,这种“基因缺陷”导致任何制度或政策层面的改善都难以在根本上解决问题。与此形成鲜明对比,中国倡导的人类命运共同体为全球治理提供新的方案,它不仅突破了西方中心主义世界秩序的桎梏,同时为落后国家追逐现代化提供了舞台。

关键词：世界政治学全球治理帝国主义国家性人类命运共同体