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Transient Analysis of a Reactor Coolant Pump Rotor Seizure Nuclear Accident

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Fluid Dynamics & Materials Processing 2024年第6期20卷 1331-1349页

作者： Mengdong An Weiyuan Zhong Wei Xu xiuli wang Research Center of Fluid Machinery Engineering and Technology Zhenjiang212013China School of Energy and Power Engineering Jiangsu UniversityZhenjiang212013China

The reactor coolant pump(RCP)rotor seizure accident is defined as a short-time seizure of the RCP *** event typically leads to an abrupt flow decrease in the corresponding loop and an ensuing reactor and turbine *** significant reduction of core coolant flow while the reactor is being operated at full load can have very negative *** potentially dangerous event is typically characterized by a complex transient behavior in terms of flow conditions and energy transformation,which need to be analyzed and *** study constructed transient flow and rotational speed mathematical models under various degrees of rotor seizure using the test data collected from a dedicated transient rotor seizure test ***,bidirectional fluid-solid coupling simulations were conducted to investigate the flow evolution *** is found that the influence of the impeller structure size and transient braking acceleration on the unsteady head(Hu)is dominant in rotor seizure accident ***,the present results also show that the rotational acceleration additional head(Hu1)is much higher than the instantaneous head(Hu2).

关键词： Reactor coolant pump bidirectional fluid-solid coupling rotor seizure nuclear accident

Experimental and Numerical Evaluation of the Cavitation Performances of Self-Excited Oscillating Jets

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Fluid Dynamics & Materials Processing 2024年第8期20卷 1883-1901页

作者： Yuanyuan Zhao Fujian Zhao Guohui Li Wei Xu xiuli wang School of the Environment and Safety Engineering Jiangsu UniversityZhenjiang212013China Research Center of Fluid Machinery Engineering and Technology Jiangsu UniversityZhenjiang212013China GongQing Institute of Science and Technology Jiujiang332020China School of Energy and Power Engineering Jiangsu UniversityZhenjiang212013China

Self-excited oscillating jets(SOJ)are used in several practical *** performances are significantly affected by structural parameters and the target *** this study,a geometric model of the SOJ nozzle accounting for multiple structural parameters is introduced,then the related cavitation performances and the optimal target distance are investigated using a Large-Eddy Simulation(LES)*** are also provided about an experiment,which was conducted to validate the simulation *** analyzing the evolution of the vapor volume fraction at the nozzle outlet,a discussion is presented about the effect of the aforementioned structural parameters on the cavitation performances and the target *** is shown that the distribution of cavitation clouds at the outlet of the SOJ nozzle displays a non-monotonic trend(first increasing,then decreasing).Under working conditions with an inlet pressure of 4 MPa,a SOJ nozzle outlet/inlet diameter ratio(D_(1)/D_(2))of 1.2,and a chamber diameter ratio(D/L)close to 1.8,the nozzle outlet cavitation performance attains a *** optimal structural parameters correspond to the optimal target distance,which is near 50 *** experiments have revealed that the SOJ nozzle with the above parameters displays a good cavitation erosion effect at the target distance of 50 mm,in satisfactory agreement with the numerical simulation results.

关键词： Self-excited oscillating nozzle cavitating jet target distant LES cavitation

Microplastic and Heavy Metals Distributions in Urban Rivers Sediments,China

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Journal of Ocean University of China 2024年第4期23卷 1015-1025页

作者： SONG Dandan SHANG Yujun wang xiuli ZHUANG Yuwei GUO Hui BI Shuping HU Jianjun High and New Technology Research Center of Henan Academy of Sciences Zhengzhou 450002China Henan Provincial Cartographic Institute Zhengzhou 450008China

This study investigated the distribution of microplastics and heavy metals,along with the interaction between the two in the sediments of urban rivers in *** showed that the abundance of microplastics ranged from 2412±187.5 to 7638±1312items kg^(-1)dry sediment across different survey stations,with an average abundance at(4388±713)items kg^(-1)dry *** further categorization,it was found that transparent fragments were the primary color and type of microplastics *** potential ecological risk index(RI)of heavy metals in sediments suggested a low level of ecological risk within a majority of the urban rivers *** was identified as the main potential ecological risk factor in the sediments of the studied *** was a relatively good significant linear relationship between the RI of heavy metals and the abundance of microplastics,bolstering the linkage between these two environmental ***,the concentrations of heavy metals in microplastics were not dependent on their corresponding contents in *** fact,the concentration of Cu,Cd,and As in microplastics were higher than those in the *** finding confirmed that microplastics could serve as carriers of heavy metals and introduce potential risks to aquatic wildlife and human through the food chain.

关键词： microplastic heavy metals risk assessment river sediments

A new Keggin-type polyoxometallate-based bifunctional catalyst for trace detection and pH-universal photodegradation of phenol

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Chinese Chemical Letters 2024年第8期35卷 335-340页

作者： Shuang Li Jiayu Sun Guocheng Liu Shuo Zhang Zhong Zhang xiuli wang College of Chemistry and Materials Engineering Professional Technology Innovation Center of Liaoning Province for Conversion Materials of Solar CellBohai UniversityJinzhou 121013China

The widespread application of phenolic substances in the field of food,medicine and industry,is harmful to the environment and human ***,it is very important to develop a con-venient and effective method to detect and degrade phenolic ***,we report a new keggin-type polyoxometallate-based metal-organic complex self-assembled under solvothermal condition,{[Cu(dap)(3-PA)]4(SiW_(12)O_(40))(H_(2)O)_(2)}·2H_(2)O(1,dap=1,2-diaminopropane,3-HPA=3-pyridineacrylic acid).1 shows an interesting 1D ladder-like *** a bifunctional catalyst,1 can be employed as a colori-metric sensor toward phenol with the relatively low detection limit(LOD)of 0.36μmol/L(S/N=3)in the wide range(0.001-0.1 mmol/L).The title colorimetric sensor is applied to determine phenol in various water environment with good recoveries ranging from 95%-105%.In addition,1 also exhibits excellent photocatalytic degradation toward phenol under visible light with the highest removal efficiency at 96%for 100 min and wide pH *** selectivity,stability and reliability of the detection of 1 towards phenol,as well as the detection for 4-chlorophenol,o-cresol,4-nitrophenol and phloroglucinol were ***,the photocatalytic reaction kinetics and the mechanisms of photodegradation of phenol were also investigated in detail.

关键词： POM-based metal-organic complex Bifunctional catalyst Phenolic colorimetric sensor Low detection limit pH-universal photocatalysis Photodegraded phenol

Cross Validation Based Model Averaging for Varying-Coefficient Models with Response Missing at Random

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Journal of Applied Mathematics and Physics 2024年第3期12卷 764-777页

作者： Huixin Li xiuli wang School of Mathematics and Statistics Shandong Normal University Jinan China

In this paper, a model averaging method is proposed for varying-coefficient models with response missing at random by establishing a weight selection criterion based on cross-validation. Under certain regularity conditions, it is proved that the proposed method is asymptotically optimal in the sense of achieving the minimum squared error.

关键词： Response Missing at Random Model Averaging Asymptotic Optimality B-Spline Approximation

GhWRKY75 positively regulates GhPR6-5b via binding to a W-box TTGAC(C/T) to orchestrate cotton resistance to Verticillium dahliae

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Journal of Integrative Agriculture 2024年第10期 3343-3357页

作者： Qichao Chai Meina Zheng Yanli Li Mingwei Gao Yongcui wang xiuli wang Chao Zhang Hui Jiang Ying Chen Jiabao wang Junsheng Zhao Institute of Industrial Crops Shandong Academy of Agricultural Sciences College of Life Sciences Shandong Normal University

Verticillium dahliae is an important fungal pathogen affecting cotton yield and quality. Therefore, the mining of V. dahlia-resistance genes is urgently needed. Proteases and protease inhibitors play crucial roles in plant defense responses. However, the functions and regulatory mechanisms of the protease inhibitor PR6 gene family remain largely unknown. This study provides a comprehensive analysis of the PR6 gene family in the cotton *** performed genome-wide identification and functional characterization of the cotton GhPR6 gene family, which belongs to the potato protease inhibitor I family of inhibitors. Thirty-nine PR6s were identified in Gossypium arboreum, G. raimondii, G. barbadense, and G. hirsutum, and they were clustered into four groups. Based on the analysis of pathogen-induced and Ghlmm transcriptome data, Gh PR6-5b was identified as the key gene for V. dahliae resistance. Virus-induced gene silencing experiments revealed that cotton was more sensitive to V. dahliae V991after PR6-5b silencing. The present study established that GhWRKY75 plays an important role in resistance to Verticillium wilt in cotton by positively regulating GhPR6-5b expression by directly binding to the W-box TTGAC(T/C). Our findings established that GhWRKY75 is a potential candidate for improving cotton resistance to V. dahliae,and provide primary information for further investigations and the development of specific strategies to bolster the defense mechanisms of cotton against V. dahliae.

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基于ABCB1(2677T>G)基因多态性指导阿托伐他汀与瑞舒伐他汀个体化用药的临床研究

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药物评价研究 2024年第3期47卷 605-610页

作者：杨航王秀丽河南理工大学第一附属医院药学三部河南焦作454000

目的研究是否采纳基于ABCB1(2677T>G)基因多态性所给出的个体化用药建议对患者调脂疗效的影响。方法回顾性选取2020年12月—2022年12月河南理工大学第一附属医院住院高脂血症患者85例作为研究对象,患者均经过阿托伐他汀或瑞舒伐他汀连... 详细信息

目的研究是否采纳基于ABCB1(2677T>G)基因多态性所给出的个体化用药建议对患者调脂疗效的影响。方法回顾性选取2020年12月—2022年12月河南理工大学第一附属医院住院高脂血症患者85例作为研究对象,患者均经过阿托伐他汀或瑞舒伐他汀连续治疗4周,采用荧光原位杂交法测定ABCB1(2677T>G)基因多态性。按照是否采纳基于ABCB1(2677T>G)基因多态性所给出的个体化用药建议将85例患者分为采纳建议组和未采纳建议组,采纳建议组中TT、GT型患者均服用瑞舒伐他汀,GG型患者均服用阿托伐他汀;未采纳建议组中TT、GT型患者均服用阿托伐他汀,GG型患者均服用瑞舒伐他汀。比较两组患者治疗前后的血脂变化率,观察是否采纳基于ABCB1(2677T>G)基因多态性所给出的个体化用药建议对患者调降脂治疗的影响。结果85例患者中ABCB1(2677T>G)基因频率分别为GG(25例)29.41%、GT(33例)38.82%、TT(27例)31.77%,ABCB1(2677T>G)基因型分布符合Hardy-Weinberg遗传平衡。治疗前,采纳建议组与未采纳建议组患者的总胆固醇(TC)、低密度脂蛋白-胆固醇(LDL-C)、高密度脂蛋白-胆固醇(HDL-C)没有显著差异。治疗后,两组患者的TC、LDL-C变化率有极显著差异(P0.05)。TT型患者治疗后的HDL-C变化率有显著差异(P0.05)。结论采纳基于ABCB1(2677T>G)基因多态性所给出的个体化用药建议的患者,其在降低TC、LDL-C水平方面的效果明显优于未采纳建议的患者。

关键词： ABCB1(2677T>G) 基因多态性阿托伐他汀瑞舒伐他汀调脂疗效个体化用药

电力-绿证点对点交易下基于多产消者博弈均衡的分布式资源扩展规划

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中国电机工程学报 2024年第6期44卷 2144-2156,I0005页

作者：肖云鹏朱玥荣王秀丽王锡凡西安交通大学电气工程学院陕西省西安市710049

点对点(peer-to-peer,P2P)交易是近年来快速发展建立的配网内新型市场机制。由于投资建设周期较短,分布式资源的扩展规划将受P2P交易的显著影响。考虑多产消者间的博弈互动,该文建立基于多产消者博弈均衡的分布式资源扩展规划模型,并结... 详细信息

点对点(peer-to-peer,P2P)交易是近年来快速发展建立的配网内新型市场机制。由于投资建设周期较短,分布式资源的扩展规划将受P2P交易的显著影响。考虑多产消者间的博弈互动,该文建立基于多产消者博弈均衡的分布式资源扩展规划模型,并结合模型特征与求解需求构建基于Lp-BoxADMM的分布式求解算法。进一步通过基于IEEE标准测试系统的算例分析,验证所提模型及算法的有效性。分析P2P交易与多产消者间博弈互动行为对分布式资源扩展规划、新能源消纳、产消者成本收益的影响。

关键词：点对点交易产消者分布式资源扩展规划绿证 Lp-Box ADMM

考虑灵活调节需求的容量市场出清模型与定价方法

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电力系统自动化 2024年第11期48卷 64-76页

作者：瞿颖肖云鹏张臣王秀丽西安交通大学电气工程学院陕西省西安市710049

新能源占比的提升使得电力系统对灵活调节资源的需求显著增加,而传统容量市场仅以保障负荷峰值时段的系统充裕度为目标,仍可能存在因灵活调节能力不足而导致电力供应短缺的情况。为此,提出考虑灵活调节需求的容量市场鲁棒优化出清模型... 详细信息

新能源占比的提升使得电力系统对灵活调节资源的需求显著增加,而传统容量市场仅以保障负荷峰值时段的系统充裕度为目标,仍可能存在因灵活调节能力不足而导致电力供应短缺的情况。为此,提出考虑灵活调节需求的容量市场鲁棒优化出清模型与定价方法,给出不同类型资源的结算规则,并验证所提出的容量市场机制能够满足社会效率、收支平衡、个体理性、激励相容等性质。最后,采用IEEE 118节点系统进行算例验证。结果表明,所提出的容量市场机制能够同时保障负荷峰值时段系统充裕度与灵活调节能力的充裕度,合理刻画灵活调节资源的容量价值,有效区分不同类型资源的有效容量贡献与引起灵活调节需求的责任,有助于引导新能源机组平抑出力不确定性波动,激励灵活性资源提供容量满足系统灵活调节需求。

关键词：容量市场电力系统灵活性定价机制鲁棒优化激励相容