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Electronic structure and spin–orbit coupling in ternary transition metal chalcogenides Cu_(2)TlX_(2)(X = Se, Te)

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Chinese Physics B 2022年第3期31卷 122-127页

作者： Na Qin Xian Du Yangyang Lv Lu Kang Zhongxu Yin Jingsong Zhou Xu Gu Qinqin Zhang Runzhe Xu Wenxuan Zhao Yidian Li Shuhua Yao Yanfeng Chen Zhongkai Liu Lexian Yang Yulin Chen State Key Laboratory of Low Dimensional Quantum Physics Department of PhysicsTsinghua UniversityBeijing 100084China National Laboratory of Solid State Microstructures Department of Materials Science and EngineeringNanjing UniversityNanjing 210093China School of Physical Science and Technology ShanghaiTech University and CAS-Shanghai Science Research CenterShanghai 201210China ShanghaiTech Laboratory for Topological Physics Shanghai 200031China Frontier Science Center for Quantum Information Beijing 100084China Department of Physics Clarendon LaboratoryUniversity of OxfordParks RoadOxford 0XI 3PUUK

Ternary transition metal chalcogenides provide a rich platform to search and study intriguing electronic properties. Using angle-resolved photoemission spectroscopy and ab initio calculation, we investigate the electronic structure of Cu_(2)TlX_(2)(X = Se, Te), ternary transition metal chalcogenides with quasi-two-dimensional crystal structure. The band dispersions near the Fermi level are mainly contributed by the Te/Se p orbitals. According to our ab-initio calculation, the electronic structure changes from a semiconductor with indirect band gap in Cu_(2)TlSe_(2) to a semimetal in Cu_(2)TlTe_(2), suggesting a band-gap tunability with the composition of Se and Te. By comparing ARPES experimental data with the calculated results, we identify strong modulation of the band structure by spin–orbit coupling in the compounds. Our results provide a ternary platform to study and engineer the electronic properties of transition metal chalcogenides related to large spin–orbit coupling.

关键词： transition metal chalcogenides spin–orbit coupling electronic structure angle-resolved photoemission spectroscopy(ARPES)

Feature and Tendency of Technology Transfer in Z-Park Patent Cooperation Network:From the Perspective of Global Optimal Path

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Journal of Data and Information Science 2021年第4期6卷 111-138页

作者： Jun Guan Jingying Xu Yu Han Dawei Wang Lizhi Xing School of Economics and Management Beijing University of TechnologyBeijing 100124China

Purpose:This study aims to provide a new framework for analyzing the path of technology diffusion in the innovation network at the regional level and industrial level respectively,which is conducive to the integration of innovation resources,the coordinated development of innovative subjects,and the improvement of innovation ***/methodology/approach:Based on the Z-Park patent cooperation data,we establish Inter-Enterprise Technology Transfer Network model and apply the concept of Pivotability to describe the key links of technology diffusion and quantify the importance of innovative *** measuring the topologically structural characteristics in the levels of branch park and the technosphere,this paper demonstrates how technology spreads and promotes overall innovation activities within the innovation ***:The results indicate that:(1)Patent cooperation network of the Z-Park displays heterogeneity and the connections between the innovative subjects distribute extremely uneven.(2)Haidian park owns the highest pivotability in the IETTN model,yet the related inter-enterprise patent cooperation is mainly concentrated in its internal,failing to facilitate the technology diffusion across multiple branch parks.(3)Such fields as“electronics and information”and“advanced manufacturing”are prominent in the cross-technosphere cooperation,while fields such as“new energy”and“environmental protection technology”can better promote industrial *** limitations:Only the part of the joint patent application is taken into account while establishing the patent cooperation *** other factors that influence the mechanism of technology diffusion in the innovation network need to be further studied,such as financial capital,market competition,and personnel mobility,*** implications:The findings of this paper will provide useful information and suggestions for the administration and policy-making of high-tech ***

关键词： Patent Cooperation Innovation Network Industrial Integration Z-Park

Integrating ergonomics data and emotional scale to analyze people’s emotional attachment to different landscape features in the Wudaokou Urban Park

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Frontiers of Architectural Research 2023年第1期12卷 175-187页

作者： Ruoshi Zhang School of Landscape Architecture Beijing Forestry UniversityBeijing 100083China

Against the background of urban renewal,the landscape transformation of urban public space into urban parks has become an effective way of improving environmental quality and creating an emotional attachment for ***,existing studies have seldom adopted experimental methods to scientifically reveal the effect of different landscape features on emotional *** a portable eye movement tracker,wearable wireless physiological sensor,and emotional attachment scale,this study collects participants’ergonomics data,and their degree and dimension of emotional attachment while experiencing different landscape features in Wudaokou Park in beijing,*** data were analyzed with the help of ErgoLab platform and IBM SPSS *** results indicate that the artificial and natural landscape features and their specific characteristics have different effects on eye movement index,heart rate variability,skin conductance level,and attachment degree and *** design of Wudaokou Park was proven to significantly promote emotional *** features play an important role,among which the use of wild plants and gazebosdshowing the texture and structural logic of bamboo materialsdstand *** research not only expands the practical scope of ergonomics instruments and improves the rationality of the emotional attachment scale,but also provides emotion-oriented design methods for urban researchers and designers to improve the emotional experience in urban parks in the future.

关键词： Emotional attachment Ergonomics data Emotional scale Landscape features Wudaokou urban park

Strategies for Enhancing the Efficiency of Bioretention Swales and Basins for Urban Stormwater Management in Temperate Region

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Journal of Donghua University(English Edition) 2011年第2期28卷 152-157页

作者：彭澄瑶张杰李冬林齐 Key Laboratory of beijing for Water Quality Science and Water Environmental Recovery Engineering Beijing University of Technology

Among various schemes to reuse and recycle the limited urban fresh water resources, sustainable urban stormwater management, such as water sensitive urban design and rainwater harvesting, has been recognized as one of the most efficient and economically viable approaches. Storm runoff shall be treated as close as possible to its source before it is reused or discharged into public drainage network or receiving waters to enhance the water environment quality. Bioretention swale/basin, which has been commonly applied to treat runoff from roads, car parks, cyclist and pedestrian paths, rooftops, etc., is recognized to be the most efficient and aesthetic pleasing way to harvest rainwater in urban settings, and other longish shape runoff catchment area. This paper studied over 10 bioretention swales/basins applications in temperate region worldwide covering China, Germany, Norway, Austria, USA, and Australia. Key steps in bioretention swale/basin design and implementation in temperate region were investigated, such as strategic bioretention scheme selection, flow conveyance and hydraulic capacity design, filtering media profile, vegetation scheme selection and maintenance scheme, and suggestion and key design parameters. The critical path and parameters of bioretention swale/basin design which enhanced the effectiveness and efficiency of its application for rainwater harvesting in temperate regions were derived.

关键词： urban stormwater management bioretention swale bioretention basin hydraulic capacity filter media

Hierarchical Multi-objective Planning for Integrated Energy Systems in Smart parks Considering Operational Characteristics

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CSEE Journal of Power and Energy Systems 2022年第6期8卷 1760-1771页

作者： Weijie Dong Limei Zhang Dongxia Zhang Quansheng Cui beijing Information Science&Technology University Beijing 100044China Hebei Agricultural University Hebei 071001China China Electric Power Research Institute Beijing 100192China TBEA Technology&Investment Co. Ltd.Tianjin 301700China

An integrated energy system(IES)is considered to be an important supporting technology for emission reduction because it can effectively improve the efficiency of energy utilization and promote its sustainable *** the uncertainties and operational conditions,this paper establishes a bilevel multi-objective optimization model for IES for the Smart Park from the standpoint of economy,technology and *** upper level with one objective reflects the economic cost composed of investment,operating and maintenance,*** lower level constructs three objectives,including pollution emission,operation costs and renewable energy ***,various equality and inequality constraints are addressed to satisfy the technical *** addition,an improved MOEA/D-MC-DC algorithm(Multi Objective Evolutionary Algorithm through Decomposition Based on Monte Carlo and Decoupled Coding,MOEA/D-MC-DC)is presented for handling the complex and nonlinear bilevel multi-objective optimization problems with constraints.A genetic algorithm(GA)is used to solve the upper single objective,while MOEA is employed to cope with the multi-objectives of the lower *** three typical IESs in the Smart Park as examples,several simulations are carried out to verify the efficiency,applicability and universality of the proposed model and optimization *** results show that the proposed method can effectively optimize the configuration of an IES in various Smart parks.

关键词： Integrated energy system bilevel multiobjective optimization configuration MOEA/D-CA-DC Smart Park

Complement activation by phospholipids: the interplay of factor H and C1q

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Protein & Cell 2010年第11期1卷 1033-1049页

作者： Lee Aun Tan Bingbin Yu Francis CJ Sim Uday Kishore Robert B Sim MRC Immunochemistry Unit Department of BiochemistryUniversity of OxfordSouth Parks RdOxford OX13QUUK Department of Pharmacology University of OxfordMansfield RoadOxford OX13QTUK centre for Infection Immunity and Disease MechanismsBiosciencesSchool of Health Sciences and Social CareBrunel UniversityUxbridge UB83PH West LondonUK Present address Department of Immunology Faculty of MedicineImperial College LondonHammersmith HospitalDu Cane RoadLondon W120NNUK Present address School of Life Sciences and Engineering Biology BuildingTsinghua UniversityBeijing 100084China

Complement proteins in blood recognize charged *** anionic phospholipid(aPL)cardiolipin binds both complement proteins C1q and factor H.C1q is an activator of the complement classical pathway,while factor H is an inhibitor of the alternative *** examine opposing effects of C1q and factor H on complement activation by aPL,we surveyed C1q and factor H binding,and complement activation by aPL,either coated on microtitre plates or in *** C1q and factor H bound to all aPL tested,and competed directly with each other for *** the aPL activated the complement classical pathway,but negligibly the alternative pathway,consistent with accepted roles of C1q and factor ***,in this system,factor H,by competing directly with C1q for binding to aPL,acts as a direct regulator of the complement classical *** regulatory mechanism is distinct from its action on the alternative *** of classical pathway activation by factor H was confirmed by measuring C4 activation by aPL in human sera in which the C1q:factor H molar ratio was adjusted over a wide *** factor H,which is regarded as a down-regulator only of the alternative pathway,has a distinct role in downregulating activation of the classical complement pathway by aPL.A factor H homologue,β2-glycoprotein-1,also strongly inhibits C1q binding to *** globular domains of C1q A,B and C chains bound aPL similarly to native C1q,confirming that C1q binds aPL via its globular heads.

关键词： complement regulation classical pathway C1q factor H anionic phospholipid

Network analysis of eight industrial symbiosis systems

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Frontiers of Earth Science 2016年第2期10卷 352-365页

作者： Yan ZHANG Hongmei ZHENG Han SHI Xiangyi YU Gengyuan LIU Meirong SU Yating LI Yingying CHAI State Key Joint Laboratory of Environmental Simulation and Pollution Control School of Environment Beijing Normal University Beijing 100875 China Department of Public Policy City University of Hong Kong Hong Kong China Solid Waste and Chemical Management Center of MEP Beijing 100029 China Chinese Research Academy of Environmental Sciences Beijing 100012 China

Industrial symbiosis is the quintessential characteristic of an eco-industrial park. To divide parks into different types, previous studies mostly focused on qualitative judgments, and failed to use metrics to conduct quantitative research on the intemal structural or functional characteristics of a park. To analyze a park＇s structural attributes, a range of metrics from network analysis have been applied, but few researchers have compared two or more symbioses using multiple metrics. In this study, we used two metrics （density and network degree centraliza- tion） to compare the degrees of completeness and dependence of eight diverse but representative industrial symbiosis networks. Through the combination of the two metrics, we divided the networks into three types： weak completeness, and two forms of strong completeness, namely ＂anchor tenant＂ mutualism and ＂equality-oriented＂ mutualism. The results showed that the networks with a weak degree of completeness were sparse and had few connections among nodes; for ＂anchor tenant＂ mutualism, the degree of completeness was relatively high, but the affiliated members were too dependent on core members; and the members in ＂equality-oriented＂ mutualism had equal roles, with diverse and flexible symbiotic paths. These results revealed some of the systems＇ internal structure and how different structures influenced the exchanges of materials, energy, and knowledge among members of a system, thereby providing insights into threats that may destabilize the network. Based on this analysis, we provide examples of the advantages and effectiveness of recent improvement projects in a typical Chinese eco-industrial park （Shandong Lubei）.

关键词： industrial ecology network analysis density,network degree centralization eco-industrial park

Analysis on Change Trend and Influencing Factors of Natural Resource Utilization of Community Farmers around the Habitat of Giant Pandas

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Journal of Environmental Protection 2022年第6期13卷 437-448页

作者： Qing Qin Xiao Zhou Shuo Wang Shuihua Cai Yan Dong Jian Qiu Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing China Chinese Association of parks Beijing China Key Laboratory of SFGA on Conservation Biology of Rare Animals in The Giant Panda National Park (CCRCGP) Chengdu China Longdong University Qingyang China China Flower Association Beijing China

The habitat of giant pandas borders the living areas of farmers in surrounding communities. Due to the low level of economic development and resource used method, the life of community farmers depends on the natural resources of the habitat of giant pandas. Analyzing the natural resource utilization of farmers in communities around the habitat of giant pandas is conducive to formulating more reasonable management policies and protecting the habitat of giant pandas more effectively. Based on the field survey data, this paper classifies the main ways of community farmers using the natural resources of the habitat of giant pandas, counts the quantity of resources used and analyzes their change trends. On this basis, this paper selects indicators, constructs a model and analyzes the main influencing factors affecting the natural resources utilization of community farmers from three aspects: the individual characteristics of household heads, the family characteristics of community farmers and the residence characteristics of community farmers.

关键词： Natural Resource Method of Utilization Change Trend Influencing Factors The Habitat of Giant Pandas

Nucleotide bias of DCL and AGO in plant anti-virus gene silencing

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Protein & Cell 2010年第9期1卷 847-858页

作者： Thien Ho Liang Wang Linfeng Huang Zhigang Li Denise W.Pallett Tamas Dalmay Kazusato Ohshima John A.Walsh Hui Wang NERC/centre for Ecology and Hydrology(CEH)Wallingford Maclean BuildingBenson LaneWallingfordOxfordshire OX108BBUK Department of Biochemistry University of OxfordSouth Parks RoadOxford OX13QUUK beijing Institute of Genomics Chinese Academy of SciencesBeijing 100029China School of Biological Sciences University of East AngliaNorwich NR47TJUK Laboratory of Plant Virology Faculty of AgricultureSaga University1-banchiHonjo-machiSaga 840-8502Japan Plant-Virus Interactions Group Warwick HRIWarwick UniversityWellesbourneWarwick CV359EFUK Current address:AF Building University of Dundee at SCRIInvergowrieDundee DD25DAUK Current address:Immune Disease Institute 200 Longwood AvenueBoston MA 02115USA

Plant Dicer-like(DCL)and Argonaute(AGO)are the key enzymes involved in anti-virus post-transcriptional gene silencing(AV-PTGS).Here we show that AV-PTGS exhibited nucleotide preference by calculating a relative AV-PTGS efficiency on processing viral RNA *** comparison with genome sequences of dicot-infecting Turnip mosaic virus(TuMV)and monocot-infecting Cocksfoot streak virus(CSV),viral-derived small interfering RNAs(vsiRNAs)displayed positive correlations between AV-PTGS efficiency and G+C content(GC%).Further investigations on nucleotide contents revealed that the vsiRNA populations had *** finding was further supported by our analyses of previously reported vsiRNA populations in diverse plant-virus associations,and AGO associated Arabidopsis endogenous siRNA populations,indicating that plant AGOs operated with *** further propose a hypothesis that AV-PTGS imposes selection pressure(s)on the evolution of plant *** hypothesis was supported when potyvirus genomes were analysed for evidence of GC elimination,suggesting that plant virus evolution to have low GC%genomes would have a unique function,which is to reduce the host AV-PTGS attack during infections.

关键词： anti-virus post-transcriptional gene silencing siRNA nucleotide bias Dicer-like Argonaute plant virus evolution