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Optimal Operation of Integrated Heat and Electricity Systems:A Tightening McCormick Approach

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Engineering 2021年第8期7卷 1076-1086页

作者： lirong Deng Hongbin Sun baoju li Yong Sun Tianshu Yang Xuan Zhang Tsinghua–Berkeley Shenzhen Institute Tsinghua UniversityShenzhen 518055China State Key Laboratory of Power Systems Department of Electrical EngineeringTsinghua UniversityBeijing 100084China State Grid Jilin Electric Power Supply Co. Ltd.Changchun 130000China Electrical College Harbin Institute of TechnologyHarbin 150006China

Combined heat and electricity operation with variable mass flow rates promotes flexibility,economy,and sustainability through synergies between electric power systems(EPSs)and district heating systems(DHSs).Such combined operation presents a highly nonlinear and nonconvex optimization problem,mainly due to the bilinear terms in the heat flow model—that is,the product of the mass flow rate and the nodal *** methods,such as nonlinear optimization,generalized Benders decomposition,and convex relaxation,still present challenges in achieving a satisfactory performance in terms of solution quality and computational *** resolve this problem,we herein first reformulate the district heating network model through an equivalent transformation and variable *** reformulated model has only one set of nonconvex constraints with reduced bilinear terms,and the remaining constraints are *** a reformulation not only ensures optimality,but also accelerates the solving *** relax the remaining bilinear constraints,we then apply McCormick envelopes and obtain an objective lower bound of the reformulated *** improve the quality of the McCormick relaxation,we employ a piecewise McCormick technique that partitions the domain of one of the variables of the bilinear terms into several disjoint regions in order to derive strengthened lower and upper bounds of the partitioned *** propose a heuristic tightening method to further constrict the strengthened bounds derived from the piecewise McCormick technique and recover a nearby feasible *** studies show that,compared with the interior point method and the method implemented in a global bilinear solver,the proposed tightening McCormick method quickly solves the heat–electricity operation problem with an acceptable feasibility check and optimality.

关键词： Integrated heat and electricity system Convex relaxation Operation McCormick envelopes

Synthesis and Evaluation of Novel N-（4＇-Arylpyrimidin-2＇-yl） Sulfonylurea Derivatives as Potential Antifungal Agents

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Chemical Research in Chinese Universities 2015年第2期31卷 218-223页

作者： CHEN Wei li Yuxin SHI Yanxia WEI Wei CHEN Youwei li Yonghong liU Jingbo li baoju li Zhengmmg State Key Laboratory of Elemento-Organie Chemistry Collaborative Innovation Center of Chemical Science and Engineering(Tianjin) Nankai University Tianjin 300071 P. R. China Institute of Vegetables and Flowers Chinese Academy of Agricultural Sciences Beijing 100081 P. R. China

Sulfonylureas（SUs） are potent and selective inhibitors of acetohydroxyacid synthase and has been used as herbicides. Some SUs also displayed other biological activities. In order to discuss the antifungal activity of SUs, a series of novel SUs containing aryl-substituted pyrimidine moieties was designed and synthesized. The preliminary bioassay showed that the title compounds exhibited moderate to favorable fungicidal activities in vivo. Especially, compound 9b exhibited more efficacy than the controls against five fungi at 25 mg/L. These promising results indicate that an aryl group on pyrimidine ring is favorable for antifungal activity and SUs are potential inhibitors for some phytopathogenic fungi.

关键词： Acetohydroxyacid synthase Sulfonylurea Fungicidal activity Substituted pyrimidine

Robustness Assessment of Wind Power Generation Considering Rigorous Security Constraints for Power System: A Hybrid RLO-IGDT Approach

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CSEE Journal of Power and Energy Systems 2024年第2期10卷 518-529页

作者： lianyong Zuo Shengshi Wang Yong Sun Shichang Cui Jiakun Fang Xiaomeng Ai baoju li Chengliang Hao Jinyu Wen State Key Laboratory of Advanced Electromagnetic Technology School of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430073China State Grid Jilin Electric Power Company Changchun 130021China

Fossil fuel depletion and environmental pollution problems promote development of renewable energy(RE)*** increasing penetration of RE,operation security and economy of power systems(PS)are greatly impacted by fluctuation and intermittence of renewable *** this paper,information gap decision theory(IGDT)is adapted to handle uncertainty of wind power *** on conventional IGDT method,linear regulation strategy(LRS)and robust linear optimization(RLO)method are integrated to reformulate the model for rigorously considering security *** a robustness assessment method based on hybrid RLO-IGDT approach is proposed for analyzing robustness and economic performance of ***,a risk-averse linearization method is adapted to convert the proposed assessment model into a mixed integer linear programming(MILP)problem for convenient optimization without robustness ***,results of case studies validate superiority of proposed method in guaranteeing operation security rigorously and effectiveness in assessment of RSR for PS without *** Terms-Hybrid RLO-IGDT approach,information gap decision theory(IGDT),operation security,robustness assessment,robustness security region(RSR).

关键词： IGDT approach information gap decision theory(IGDT) operation security robustness assessment robustness security region(RSR)

Synthesis and Biological Activity of Novel Furan/Thiophene and Piperazine-Containing （Bis）1,2,4-triazole Mannich Bases

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Chinese Journal of Chemistry 2015年第10期33卷 1124-1134页

作者： Baolei Wang Yanxia Shi Yizhou Zhan liyuan Zhang Yan Zhang lizhong Wang Xiao Zhang Yonghong li Zhengming li baoju li State-Key Laboratory of Elemento-Organic Chemistry Collaborative Innovation Center of Chemical Science and Engineering Nankai University Tianjin 300071 China Institute of Vegetables and Flowers Chinese Academy of Agricultural Sciences Beijing 100081 China

A series of novel furan/thiophene and piperazine-containing 1,2,4-triazole Mannich bases and bis（1,2,4-triazole） Mannich bases have been conveniently synthesized via Mannich reaction with triazole Schiff bases, various pipera- zinc derivatives, and formaldehyde as intermediates in good yields. Their structures were characterized by melting points, ~H NMR, 13C NMR, IR and elemental analysis. The preliminary bioassay showed that most compounds ex- hibited significant in vitro and in vivo fungicidal activity against several test plant fungi. Among 32 new compounds, the trifluoromethyl-containing compounds showed superior activity than the methyl-containing ones. Several com- pounds, such as FS, F9, F10, G5, HT, 118, 13 and 14, were comparable with some commercial fungicides against different fungi during the present study and could be further structurally optimized. Meanwhile, several compounds showed good herbicidal activity against Brassica campestris at 100 ~tg/mL and KARl inhibitory activity at 200 μg/mL. However, compounds exhibited poor insecticidal activity against oriental armyworm at 200 μg/mL in the preliminary studies. The research results will provide useful information for the design and discovery of new agro- chemicals with novel heterocyclic structures.

关键词： 1,2,4-triazole Mannich base piperazine derivative biological activity

Effect of cypermethrin insecticide on the microbial community in cucumber phyllosphere

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Journal of Environmental Sciences 2008年第11期20卷 1356-1362页

作者： ZHANG Baoguo ZHANG Hongxun JIN Bo TANG ling YANG Jianzhou li baoju ZHUANG Guoqiang BAI Zhihui Research Centre for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085 China School of Earth and Environmental Science University of Adelaide Adelaide SA 5005 Australia Graduate University of Chinese Academy of Sciences Beijing 100085 China Institute of Vegetables and Flowers Chinese Academy of Agricultural Sciences Beijing 100081 China

Cucumber (Cucumis sativus) is one of the most widely used vegetable in the world,and different pesticides have been extensively used for controlling the insects and disease pathogens of this ***,little is known about how the pesticides affect the microbial community in cucumber *** study was the first attempt to assess the impact of pyrethroid insecticide cyperemethrin on the microbial communities of cucumber phyllosphere using biochemical and genetic *** fatty ac...

关键词： cucumber cypermethrin insecticide microbial community phyllosphere phospholipid fatty acid (PLFA) T-RFLP

Genome-wide association study reveals candidate genes for gummy stem blight resistance in cucumber

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Horticultural Plant Journal 2023年第2期9卷 261-272页

作者： Jianan Han Shaoyun Dong Yanxia Shi Zhuonan Dai Han Miao baoju li Xingfang Gu Shengping Zhang Institute of Vegetables and Flowers Chinese Academy of Agricultural SciencesBeijing 100081China

Gummy stem blight(GSB),caused by Didymella bryoniae,is a serious fungal disease that leads to decline in cucumber yield and *** molecular mechanism of GSB resistance in cucumber remains ***,we investigated the GSB resistance of cucumber core germplasms from four geographic groups at the seedling and adult stages.A total of 9 SNPs related to GSB resistance at the seedling stage and 26 SNPs at the adult stage were identified,of which some are co-localized to previously mapped Quantitative trait loci(QTLs)for GSB resistance(gsb3.2/gsb3.3,gsb5.1,and gsb-s6.2).Based on haplotype analysis and expression levels after inoculation,four candidate genes were identified within the region identified by both Genome-wide association study(GWAS)and previous identified QTL mapping,including Csa3G129470 for gsb3.2/gsb3.3,Csa5G606820 and Csa5G606850 for gsb5.1,and Csa6G079730 for *** novel GSB resistant accessions,significant SNPs,and candidate genes facilitate the breeding of GSB resistant cucumber cultivars and provide a novel idea for understanding GSB resistance mechanism in cucumber.

关键词： Cucumber(Cucumis sativus L.) GSB GWAS Quantitative trait loci QTL Candidate genes

Development and Evaluation of a Loop-mediated Isothermal Amplification Assay for the Rapid Detection and Identification of Pectobacterium carotovorum on Celery in the Field

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Horticultural Plant Journal 2020年第5期6卷 313-320页

作者： Yanxia Shi Zhiwen Jin Xianglong Meng lixue Wang Xuewen Xie Ali Chai baoju li Institute of Vegetables and Flowers Chinese Academy of Agricultural SciencesBeijing 100081China

Pectobacterium carotovorum is the causal agent of bacterial soft rot in a wide range of vegetable host *** *** infects the plant,the spread of the disease is difficult to *** this study,a rapid and sensitive method based on loop-mediated isothermal amplification(LAMP)was developed for detecting *** in celery with soft rot using a primer set designed from the pmrA conserved sequence of *** specificity of the LAMP primer set for *** was extensively validated on both *** strains and nontarget *** sensitivity was 1 pg of *** genomic DNA,which demonstrated 10 times more sensitive than the conventional PCR *** was also used to detect *** in bacterial *** lowest detection concentration was 104 CFU·mL^−*** addition,a LAMP assay,in conjunction with a crude DNA extraction method,was successfully performed on ***-infected samples derived from both artificially and naturally infected *** summary,the LAMP assay established in this study constitutes a simple,sensitive,and rapid method for the detection of ***,and has potential application in the control of celery soft rot disease through early detection.

关键词： Bacterial soft rot P.carotovorum Loop-mediated isothermal amplification(LAMP) celery pmrA gene field detection

Dry Heat Treatment Reduces the Occurrence of Cladosporium cucumerinum, Ascochyta citrullina, and Colletotrichum orbiculare on the Surface and Interior of Cucumber Seeds

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Horticultural Plant Journal 2016年第1期2卷 35-40页

作者： SHI Yanxia MENG Shanshan XIE Xuewen CHAI Ali li baoju Institute of Vegetables and Flowers Chinese Academy of Agricultural Sciences Key Laboratory of Biology and Genetic Improvement of Horticultural Crops of the Ministry of Agriculture

Dry heat treatment has been identifie as a method for disinfecting seed-borne pathogens in vegetable seeds. This study demonstrated that three seed-borne pathogens of cucumber(Cladosporium cucumerinum that causes scabs, Ascochyta citrullina that results in gummy stem blight,and Colletotrichum orbiculare that induces anthracnose) could be effectively eradicated from cucumber seeds by dry heat treatment. In vitro growth of these three pathogens was inhibited by dry heat treatment at 70 °C for 40 min. These pathogens were inactivated after exposing infected seeds to 70 °C dry heat for at least 90 min. Seed infection was significant y reduced by exposing the seeds to 70 °C dry heat for at least 40 min. Seed moisture content and germination were slightly reduced after 70 °C heat treatment for 40–120 min. Seed vigor remained at a high level after dry heat treatment at 70 °C for 90 min. In conclusion, 70 °C dry heat treatment for 90 min was determined to be the optimal method for eradication of C. cucumerinum, Didymella bryoniae, and C. orbiculare from cucumber seeds.

关键词： dry heat treatment Cladosporium cucumerinum Ascochyta citrullina Colletotrichum orbiculare scab gummy stem blight anthracnose

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内蒙古普通菜豆枯萎病病原菌鉴定

植物病理学报 2023年第1期53卷 133-136页

作者：柴阿丽杨红敏李欣石延霞谢学文李磊范腾飞李宝聚中国农业科学院蔬菜花卉研究所北京100081 沈阳农业大学沈阳110000

普通菜豆(Common bean),俗称芸豆(Kidney bean),为豆科(Fabaceae)菜豆属一年生草本植物,营养丰富,蛋白质含量高,既是蔬菜又是粮食,是重要的农副产品。内蒙古自治区是我国种植普通菜豆的主要地区之一。随着普通菜豆栽培面积以及连作年限... 详细信息

普通菜豆(Common bean),俗称芸豆(Kidney bean),为豆科(Fabaceae)菜豆属一年生草本植物,营养丰富,蛋白质含量高,既是蔬菜又是粮食,是重要的农副产品。内蒙古自治区是我国种植普通菜豆的主要地区之一。随着普通菜豆栽培面积以及连作年限不断增加,病虫害问题日益突出,尤其是枯萎病,严重影响了普通菜豆的产量和品质,已成为限制普通菜豆产业可持续发展的主要因素之一。

关键词： Phaseolus vulgaris wilt Fusarium oxysporum pathogen identification