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An Overview of Metal-Organic Frameworks for Green Chemical Engineering

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Engineering 2021年第8期7卷 1115-1139页

作者： xiang-Jing kong Jian-Rong Li Beijing Key Laboratory for Green Catalysis and Separation&Department of Environmental Chemical Engineering Beijing University of TechnologyBeijing 100124China

Given the current global energy and environmental issues resulting from the fast pace of industrialization,the discovery of new functional materials has become increasingly imperative in order to advance science and technology and address the associated *** boom in metal–organic frameworks(MOFs)and MOF-derived materials in recent years has stimulated profound interest in exploring their structures and *** preparation,characterization,and processing of MOF materials are the basis of their full engagement in industrial *** intensive research in these topics,it is time to promote the practical utilization of MOFs on an industrial scale,such as for green chemical engineering,by taking advantage of their superior *** famous MOFs have already demonstrated superiority over traditional materials in solving real-world *** review starts with the basic concept of MOF chemistry and ends with a discussion of the industrial production and exploitation of MOFs in several *** goal is to provide a general scope of application to inspire MOF researchers to convert their focus on academic research to one on practical *** the obstacles of cost,scale-up preparation,processability,and stability have been overcome,MOFs and MOF-based devices will gradually enter the factory,become a part of our daily lives,and help to create a future based on green production and green living.

关键词： Metal-organic frameworks(MOFs) Application Green chemical engineering

Comparative Analysis of Cry1Ac Toxin Oligomerization and Pore Formation Between Bt-Susceptible and Bt-Resistant Helicoverpa armigera Larvae

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Journal of Integrative Agriculture 2012年第11期11卷 1845-1851页

作者： LI Yi-ping WU Jun-xiang LIU Chen-xi YUAN xiang-qun WU kong-ming liang Ge-mei GUO Yu-yuan Key Laboratory of Applied Entomology " Key Laboratory of Plant Protection Resources and Pest Management Ministry of Education~ College of Plant Protection Northwest Agriculture and Forestry University Yangling 712100 P.R.China State Key Laboratory for Biology of Plant Diseases and Insect Pests/Institute of Plant Protection Chinese Academy of Agricultural Sciences Beijing 100193 P.R.China

With the long-term use of Bacillus thuringiensis （Bt） insecticide and expansion of CrylA-expressing transgenic plants, some insect pests have developed resistance to Bt in open fields, greenhouses, and in the laboratory. Bt resistance is complex and there appear to be different ways for resistance development. Understanding the Bt resistance mechanisms is critical to prolong its usefulness. In this article, Bt receptors, the cadherin and aminopeptidase N （APN）, in brush border membrane vesicles （/3BMV） of Helicoverpa armigera were examined in both CrylAc-susceptible （96S） and CrylAc- resistant （LF120） strains, to compare CrylAc toxin oligomerization and pore formation in these two strains. CrylAc toxin oligomerization and pore formation in these two strains were compared. Results showed that cadherin and aminopeptidase N proteins could express normally in both susceptible and resistant 11. armigera strains. The ability to form CrylAc oligomers and ion channels on BBMVs was also not significantly different between these two strains.

关键词： Helicoverpa armigera Bt resistance oligomerization pore formation

An Alamouti coded CP-FBMC-MIMO system with two transmit antennas

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Science China(Information Sciences) 2015年第10期58卷 127-132页

作者： kong DeJin XIA xiang-Gen JIANG Tao Wuhan National Laboratory for Optoelectronics School of Electronics Information and CommunicationsHuazhong University of Science and Technology Department of Electrical and Computer Engineering University of Delaware

In this paper, we propose an Alamouti coding for filter bank multicarrier(FBMC) with cyclic prefix(CP) for two transmit antennas, which can avoid the imaginary interference problem existing in the conventional FBMC with multi-antenna systems. Instead of performing Alamouti coding on original data symbols, we perform Alamouti coding on pre-processing signal at the transmitter in our proposed scheme. We show that our proposed scheme has fast single-symbol maximum-likelihood(ML) decoding and achieves full spatial diversity. Simulation results show that the proposed scheme can achieve the BER performance of Alamouti coding under both of the flat-fading channel and the frequency-selective channel. Therefore, it is an efficient Alamouti coding scheme for CP-FBMC systems with two transmit antennas.

关键词： filter bank multi carrier(FBMC) multi-input multi-output(MIMO) Alamouti code MIMOFBMC spatial diversity cyclic prefix(CP)

CP-based MIMO OFDM radar IRCI free range reconstruction using real orthogonal designs

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Science China(Information Sciences) 2017年第2期60卷 40-48页

作者： Tianxian ZHANG xiang-Gen XIA Lingjiang kong The School of Electronic Engineering University of Electronic Science and Technology of China The Department of Electrical and Computer Engineering University of Delaware

In this paper, we propose a range reconstruction method for a frequency-band shared multipleinput multiple-output(MIMO) orthogonal frequency-division multiplexing(OFDM) radar with sufficient cyclic prefix(CP) by using real orthogonal designs. Compared with the application of complex orthogonal designs in our previous work, the application of real orthogonal designs can significantly reduce the number of the all-zero-valued pulses in a coherent processing interval(CPI) for each transmitter and increase the efficiency of radar transmitters. Meanwhile, it still maintains the advantages of full spatial diversity without inter-range-cell interference(IRCI). We also apply the rate-1 real orthogonal designs for different numbers of transmitters and pulses for range reconstruction without any idleness of radar transmitters. Simulation results are presented to illustrate the performances of the OFDM pulse design and the CP-based MIMO OFDM radar using real orthogonal designs.

关键词： cyclic prefix(CP) inter-range-cell interference(IRCI) multiple-input multiple-output(MIMO) radar real orthogonal designs orthogonal frequency division multiplexing(OFDM) pulse

A systematic approach for synthesizing a low-temperature distillation system

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Chinese Journal of Chemical Engineering 2015年第5期23卷 789-795页

作者： Yiqing Luo liang kong Xigang Yuan Chemical Engineering Research Center School of Chemical Engineering and Technology Tianjin University

In this paper, by combining a stochastic optimization method with a refrigeration shaft work targeting method,an approach for the synthesis of a heat integrated complex distillation system in a low-temperature process is presented. The synthesis problem is formulated as a mixed-integer nonlinear programming(MINLP) problem,which is solved by simulated annealing algorithm under a random procedure to explore the optimal operating parameters and the distillation sequence structure. The shaft work targeting method is used to evaluate the minimum energy cost of the corresponding separation system during the optimization without any need for a detailed design for the heat exchanger network(HEN) and the refrigeration system(RS). The method presented in the paper can dramatically reduce the scale and complexity of the problem. A case study of ethylene cold-end separation is used to illustrate the application of the approach. Compared with the original industrial scheme, the result is encouraging.

关键词： Energy System engineering Low-temperature distillation system Process synthesis Distillation sequence Shaft work target

DEM:Deep Entity Matching Across Heterogeneous Information Networks

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Journal of Computer Science & Technology 2020年第4期35卷 739-750页

作者： Chao kong Bao-xiang Chen Li-Ping Zhang School of Computer and Information Anhui Polytechnic UniversityWuhu 241000China

Heterogeneous information networks,which consist of multi-typed vertices representing objects and multi-typed edges representing relations between objects,are ubiquitous in the real *** this paper,we study the problem of entity matching for heterogeneous information networks based on distributed network embedding and multi-layer perceptron with a highway network,and we propose a new method named DEM short for Deep Entity *** contrast to the traditional entity matching methods,DEM utilizes the multi-layer perceptron with a highway network to explore the hidden relations to improve the performance of ***,we incorporate DEM with the network embedding methodology,enabling highly efficient computing in a vectorized ***'s generic modeling of both the network structure and the entity attributes enables it to model various heterogeneous information networks *** illustrate its functionality,we apply the DEM algorithm to two real-world entity matching applications:user linkage under the social network analysis scenario that predicts the same or matched users in different social platforms and record linkage that predicts the same or matched records in different citation *** experiments on real-world datasets demonstrate DEM's effectiveness and rationality.

关键词： heterogeneous information network entity matching network embedding multi-layer perceptron

Doping-driven dual heterogeneous interfacial structures boosting the durability of industry-compatible water splitting at high current density

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Science China Chemistry 2024年第10期67卷 3468-3481页

作者： Chunming Yang Lihai Zhou Zhijie kong xiang Li Wangchuan Zhu Guangqing Wang Yanzhong Zhen Feng Fu Yucang liang Research Institute of Comprehensive Energy Industry Technology College of Chemistry&Chemical EngineeringYan’an UniversityYan’an 716000China Henan Key Laboratory of Crystalline Molecular Functional Materials Green Catalysis CenterCollege of ChemistryZhengzhou UniversityZhengzhou 450001China Institut für Anorganische Chemie Eberhard Karls UniversitätTübingen 72076Germany

Developing highly stable electrocatalysts under industry-compatible current densities(>500 mA cm^(-2))in an anion-exchange membrane water electrolyzer(AEMWE)is an enormous challenge for water ***,based on the results of density function theory calculations,a dual heterogeneous interfacial structured NiSe/Fe-Ni(OH)_(2)catalyst was subtly designed and successfully prepared by electrodepositing Fe-doped Ni(OH)_(2)on NiSe-loaded nickel foam(NF).Fe doping-driven heterogeneous structures in NiSe/Fe-Ni(OH)_(2)markedly boost catalytic activity and durability at industrially compatible current densities in single hydrogen and oxygen evolution reactions under alkaline *** particular,NiSe/Fe-Ni(OH)_(2)shows a negligible performance loss at 600 mA cm^(-2)at least 1,000 h for overall water splitting,a distinguished long-term durability acting as AEMWE electrodes at 600 mA cm^(-2)and 1 A cm^(-2)at 85℃for at least 95 *** to Fe doping-induced strong synergetic effect between Ni and Fe,dual heterostructure-promoted charge transfer and redistribution,abundant catalytic active sites,and improvement of stability and durability,a mechanism of Fe doping-driven heterogeneous interfacial structurepromoted catalytic performance was *** study provides a successful example of theory-directed catalyst preparation and pioneers a creative strategy for industry-compatible water splitting at high current density.

关键词： doping-induced heterojunction structure NiSe/Fe-Ni(OH)_(2) large current density anion-exchange membrane industrycompatible water electrolysis

Admissibility for Linear Estimator of Parameter on Growth Curve Model with Respect to Linear Constraint

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Acta Mathematicae Applicatae Sinica 2009年第1期25卷 171-176页

作者： Ming-xiang Cao Fan-chao kong Department of Mathematics Hefei Teachers College Heifei 230061 China Department of Mathematics Anhui University Hefei 230038 China

By using the vector-method of matrix, we study Growth Curve Model with respect to linear constraint. Under matrix loss function and vector loss function, we obtain necessary and sufficient conditions for admissibility... 详细信息

关键词： Growth curve model linear estimators admissibility

Changes of Residential Land Density and Spatial Pattern from 1989 to 2004 in Jinan City,China

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Chinese Geographical Science 2011年第5期21卷 619-628页

作者： YIN Haiwei kong Fanhua ZHANG xiang Department of Urban Planning and Design Nanjing University Nanjing 210093 China International Institute for Earth System Science Nanjing University Nanjing 210093 China

Urban sprawl is driven by a myriad of factors, the predominant one of which is the development of residential land. Selecting part of Jinan City for a case study, we use the landscape metric of percent of landscape (PLAND) to capture residential land growth and density changes in 1989, 1996 and 2004 to illuminate the dynamic process of residential land development. The results indicate that the moving window method and the landscape metrics method are efficient ways to describe residential land density. The residential land showed the greatest change among the built-up land with 1995.68 ha from 1989 to 2004, which is mainly transformed from agriculture land and green space. The urban center area of study area is primarily covered with medium density residential land, and surrounded by high density residential land. The development pattern of residential land exhibited both fill-in (new growth occurs through infilling the free spaces within the developed area) and sprawl processes, influenced by a series of factors, such as urban development policy, conservation of springs, recreational and aesthetic amenities. The findings of the study will help to guide urban planning with a focus on the management and protection of the environment and resources.

关键词： residential land density landscape metric urban sprawl moving window Jinan