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A decision-making model of development intensity based on similarity relationship between land attributes intervened by urban design

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science{1.(Technological sciences) 2010年第7期53卷 1743-1754页

作者： wang JianGuo1, zhang Yu2.& FENG Han3 1 {2. of Architecture, Southeast university Key Laboratory for Urban and Architectural Heritage Conservation, Ministry of Education, Nanjing 2.0096, china 2.{2. of Architecture, Southeast university, Nanjing 2.0096, china 3 Faculty of Architecture, Delft university of technology, 2.2. CR Delft, Netherlands 1. Key Laboratory for Urban and Architectural Heritage Conservation Ministry of Education Nanjing 210096 China2. School of Architecture Southeast University Nanjing 210096 China3. Faculty of Architecture Delft University of Technology 2628 CR Delft Netherlands

The paper presents a dynamic model intervened by urban design for the decision-making of land development intensity, which expresses the inherent interaction mechanism between lands based on the evaluation of land attributes and their similarity relationship. Each land unit is described with several factors according to their condition and potential for development, such as land function, accessibility, historical site control, landscape control, and so on. Then, the dynamic reference relationship between land units is established according to the similarity relationship between their factors. That means lands with similar conditions tend to have similar development intensities, which expresses the rule of the spontaneous urban development. Therefore, the development intensities of the pending lands can be calculated by the confirmed ones. Furthermore, the system can be actively intervened by adjusting the parameters according to urban design or planning intentions. And the reaction of the system offers effective support and reference for reasonable decision. The system with multiple intervention input is not only a credible tool for deriving development intensities, but also a platform to activate urban design conception. Above all, the system as a socio-technical tool integrates the optimization of form, function and environment, and embodies the principle of impersonality, justice and flexibility in the decision of land development intensity.

关键词： land development intensity urban design land attribute similarity relationship complex system FAR

Diatomic Pd catalyst with conjugated backbone for synergistic electrochemical CO_(2.reduction

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Nano Research 2024年第6期17卷 4850-4855页

作者： Wenxuan zhang Mengran zhang Hongjuan {2. Wen zhang Min zhang MOE International Joint Laboratory of Materials Microstructure Institute for New Energy Materials and Low Carbon TechnologiesSchool of Materials Science and EngineeringTianjin University of TechnologyTianjin 300384China Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion School of Chemistry and Chemical EngineeringTianjin University of TechnologyTianjin 300384China

Double-site catalysts have attracted widespread attention in the field of electrocatalysis due to their high metal loading,adjustable active centres,and electronic valence ***,the development of bimetallic sites catalysts that coordinate with definite atoms is still in the exploratory ***,we designed and synthesized a bimetallic palladium complex(BPB-Pd_(2.)with conjugated *** supported BPB-Pd_(2.was applied to electrochemical CO_(2.reduction reaction(CO_(2.RR)for the first *** as-obtained BPB-Pd_(2.gives an exceptional Faradaic efficiency of CO(FECO)of 94.4%at−0.80 V *** hydrogen electrode(RHE),which is significantly superior to monoatomic palladium catalyst(BPB-Pd1..The density functional theory(DFT)calculations revealed that the essential reason for the outstanding activity of BPB-Pd_(2.toward CO_(2.RR was that the electronic effect between diatomic palladium reduces the free energy change for CO_(2.RR ***,BPB-Pd_(2.exhibits moderate free energy change to form COOH*intermediate,which was beneficial for the generation of CO in CO_(2.RR.

关键词： synthesis electrocatalysis CO_(2.reduction bimetallic palladium complex synergistic catalysis

Carbendazim residue in plant-based foods in china:Consecutive surveys from {1.1. to {1.{1.

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Environmental science and Eco{1. 2024年第1期17卷 109-118页

作者： Dou wang Guiling Yang Xiao Yun {1. Luo Hao Guo Liying Pan Wei Du Yanhua wang Qiang wang Pu wang Qinghua zhang Yun Li Nan Lin State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products Laboratory(Hangzhou)for Risk Assessment of Agricultural Products of Ministry of AgricultureInstitute of Agro-product Safety and NutritionZhejiang Academy of Agricultural SciencesHangzhou310021ZhejiangChina College of Urban and Environmental sciences Peking UniversityBeijing100871China Yunnan Provincial Key Laboratory of Soil Carbon Sequestration and Pollution Control Faculty of Environmental Science&EngineeringKunming University of Science&TechnologyKunming650500China hubei Key Laboratory of Industrial Fume and Dust Pollution Control School of Environment and HealthJianghan UniversityWuhan430056China State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing100085China Key Laboratory of Agro-Product Quality and Safety of Ministry of Agriculture Institute of Quality Standards and Testing Technology for Agro-ProductsChinese Academy of Agricultural SciencesBeijing100081China Department of Environmental Health School of Public HealthShanghai Jiao Tong UniversityShanghai200025China

Carbendazim,a widely used fungicide in china,has been found to have reproductive toxicity and mutagenic ***,information on the spatial-temporal variations of carbendazim residues in food in china is ***,we investigated the presence of carbendazim in china's plant-based foods from 2.1. to 2.2.,evaluated the spatial-temporal characteristics,and assessed the associated exposure risks in the Chinese *** results revealed a high detection frequency of carbendazim in fruits(2..4%)and high concentrations in vegetables(~1.0 mg kg^(-1.),indicating widespread misuse of the *** acute risks of consuming certain vegetables and cereals exceeded the recommended limits by up to 1.3}and 5 times,*** there has been a decline in carbendazim residue levels in food since the implementation of the Chinese government's action plan for zero growth of pesticide use in 2.1.,some provinces still exhibited high levels of carbendazim in multiple food categories,which were positively correlated with annual pesticide *** highlight that carbendazim contamination reflects the broader issue of pesticide use in *** emphasizes the need for committed and targeted national policies to reduce carbendazim residues in food and suggests that such measures could also regulate the use of other pesticides,given that pesticide abuse in china is not limited to specific *** call for the re-evaluation of maximum residue limits of carbendazim,particularly in highly consumed foods such as cereals.

关键词： Carbendazim Plant-based foods china Spatial-temporal variations Exposure and risk assessment

Construction and application of formal ontology for mine

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中国有色金属学会会刊：英文版 2011年第S3期21卷 577-582页

作者： CHENG Gang 1, 2. zhang Yin-ling1, 2. wang Fei 1 ,2. zhang Zhen-hui 3, GUO Yu-xiang1, 2.1. Key Laboratory of Mine Spatial Information Technologies of State Bureau of Surveying and Mapping, Henan Polytechnic university, Jiaozuo 454003, china 2. school of Surveying and land Information Engineering, Henan Polytechnic university, Jiaozuo 454003, china 3. Qingdao Branch of Naval Aeronautical Engineering Institute, Qingdao 2.6041, china Henan Polytech Univ Key Lab Mine Spatial Informat Technol State Bur Surveying & Mapping Jiaozuo 454003 Peoples R China Henan Polytech Univ Sch Surveying & Land Informat Engn Jiaozuo 454003 Peoples R China Naval Aeronaut Engn Inst Qingdao Branch Qingdao 266041 Peoples R China

Digital mine is the only way for the development of mining industry in china. Due to lack of appropriate standards and norms, and different awareness in the field of digital mine among academia and industry insiders, the meaning for digital mine is still unclear. Star{1. from the nature of mining and removing of views of specialized fields, this paper constructs formal ontology for digital mine and proposes the four levels for it. The ontology clarifies the concept world for digital mine, defines the meaning of concepts and relations clearly, provides a reference for the standard construction for digital mine and provides a unified semantic framework for the integration of heterogeneous mine data. Meanwhile, it can provide formal reasoning knowledge for expert system of digital mine and improve the intelligence and automation while the machine automatically interpre{1. and processing mine spatial data.

关键词： Digital mine formalization ontology concept world semantic share

Registration Method for CT-MR Image Based on Mutual Information

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Transactions of Tianjin university 2007年第3期13卷 226-230页

作者：张红颖张加万孙济洲 school of {1. {2. and technology Tianjin University College of Aeronautical Automation Civil Aviation University of China Tianjin 300300 China

Medical image registration is important in many medical applications. Registration method based on maximization of mutual information of voxel intensities is one of the most popular methods for 3-D multi-modality medical image registration. Generally, the optimization process is easily trapped in local maximum, resulting in wrong registration results. In order to find the correct optimum, a new multi-resolution approach for brain image registration based on normalized mutual information is proposed. In this method, to eliminate the effect of local optima, multi-scale wavelet transformation is adopted to extract the image edge features. Then the feature images are registered, and the result at this level is taken as the initial estimate for the registration of the original images. Three-dimensional volumes are used to test the algorithm. Experimental results show that the registration strategy proposed is a robust and efficient method which can reach sub-voxel accuracy and improve the optimization speed.

关键词： image registration edge detection mutual information wavelet transformation

Organocatalytic enantioselective Michael addition reactions of fluoromalonates with α,β-unsaturated aldehydes

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science{1. Chemistry 2010年第1期53卷 135-139页

作者： LI Hao1,JI YaFei2.LI Jian2.zhang ShiLei1,YU ChenGuang1 & wang Wei1,2.1 Department of Chemistry and Chemical Biology,{2. of New Mexico,Albuquerque,NM 87131-0001,USA 2.Department of Pharmaceutical sciences,school of Pharmacy,East china {2. of science and technology,Shanghai 2.02.7,china 1. Department of Chemistry and Chemical Biology University of New Mexico Albuquerque NM 87131-0001 USA2. Department of Pharmaceutical Sciences School of Pharmacy East China University of Science and Technology Shanghai 200237 China

A new organocatalytic enantioselective Michael addition of α-fluoromalonate to enals has been *** process is efficiently catalyzed by readily available chiral diphenylpyrolinol TES ether under mild reaction condition... 详细信息

关键词： organocatalysis α β-unsaturated aldehydes chiral fluorinated compounds Michael addition

Thermal stable Pt clusters anchored by K/TiO_(2.—Al_(2.O_(3)for efficient cycloalkane dehydrogenation

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Chinese Journal of Chemical Engineering 2024年第8期72卷 187-198页

作者： Zhendong wang Bofeng {1. Guozhu Liu Xiangwen {1. Key Laboratory for Green Chemical technology of the Ministry of Education School of Chemical Engineering and TechnologyTianjin UniversityTianjin 300072China Zhejiang Institute of Tianjin university Ningbo 315201China

Catalytic dehydrogenation of cycloalkanes is considered a valuable endothermic process for alleviating the thermal barrier issue of hypersonic ***,conventional Pt-based catalysts often face the severe problem of metal sintering under high-temperature ***,we develop an efficient K_({1.CO_(3)-modified Pt/TiO_({1.—Al_({1.O_(3)(K—Pt/TA)for cycloalkane *** optimized K—Pt/TA showed a high specific activity above {1..9 mol·mol^(-1.·s^(-1.(H_({1./Pt),with toluene selectivity above 90.0%at 600℃with a high weight hourly space velocity of {1.6.4 h^(-1..The introduction of alkali metal ions could generate titanate layers after high-temperature hydrogen reduction treatment,which promotes the generation of oxygen vacancy defects to anchored Pt *** addition,the titanate layers could weaken the surface acidity of catalysts and inhibit side reactions,including pyrolysis,polymerization,and isomerization ***,this work provides a modification method to develop efficient and stable dehydrogenation catalysts under high-temperature conditions.

关键词： Cycloalkane dehydrogenation Pt clusters Oxygen vacancy defects Coking Stability Deactivation

Effects of Scale Composition on Oxidation Kinetics of Fe-based Superalloy

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Journal of wuhan {1. of {2.(Materials science) 2010年第1期25卷 99-103页

作者：王海涛于化顺 Key Laboratory for Liquid Structure and Heredity of Materials of Education Ministry School of Materials Science and EngineeringShandong University

By oxidation weight gain method, four groups of Fe-based superalloys with different content of chromium, aluminium and silicon were tested at 1.2.0 ℃ for 500 hours. According to the oxidation weight gains, the oxidation kinetic curves were plotted, and the equations were regressed by least square method and non-linear curve fit{1.. The effects of different scale compositions on the morphology and oxidation kinetic law were studied further by analysis of X-ray diffraction （XRD） and scanning electron microscope （SEM）. It is found that the compounded scale is composed of Cr2.3, Al2.3, SiO2.and FeCr2.4, with compact structure and fine grains, possessing complete oxidation resistance at 1.2.0 ℃, and the oxidation kinetic curve follows the power function of y=axb （a0, 0b1.. When the compounded scale lacks Al2.3 or SiO2. it becomes weak in oxidation resistance, but the oxidation kinetic curve still follows the power function with bigger parameter b. When Cr2.3 is absent, the kinetic curve shows two parts： the slow adding of oxidation weight gains at the beginning and the ascending line in the end. Such scale loses oxidation resistance completely.

关键词： superalloy iron alloy oxide scale oxidation resistance property

Improving Fatigue Properties of 31.L Stainless Steel Welded Joints by Surface Spinning Strengthening

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Acta Metallurgica Sinica(English Letters) 2024年第5期37卷 840-854页

作者： Dongqiqiong wang Qiang wang Xiaowu Li Zhefeng {2. Department of Materials Physics and Chemistry School of Materials Science and Engineeringand Key Laboratory for Anisotropy and Texture of Materials(Ministry of Education)Northeastern UniversityShenyang 110819China Shi-Changxu Innovation Center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China College of Light Industry Liaoning UniversityShenyang 110036China

The surface spinning strengthening(3S)mechanism and fatigue life extension mechanism of 31.L stainless steel welded joint were systematically elucidated by microstructural analyses and mechanical *** indicate that surface gradient hardening layer of approximately 1.mm is formed in the base material through grain fragmentation and deformation twin strengthening,as well as in the welding zone composed of deformedδ-phases and *** fatigue strength of welded joint after 3S significantly rises by 32.(from 1.0 to 2.0 MPa),which is attributed to the effective elimination of surface geometric defects,discrete refinement ofδ-Fe phases and the appropriate improvement in the surface strength,collectively mitigating strain localization and surface fatigue damage within the gradient strengthening *** redistributed fineδ-Fe phases benefited by strong stress transfer of 3S reduce the risk of surface weak phase cracking,causing the fatigue fracture to transition from microstructure defects to crystal defects dominated by slip,further suppressing the initiation and early propagation of fatigue cracks.

关键词： 31.L stainless steel Welded joint Surface spinning strengthening Nanotwin Fatigue life