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1960—2020年南水北调区域极端气象要素变化分析

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水资源与水工程学报 2024年第1期35卷 1-8页

作者：张金萍段德润李杜白李学淳苏少辉郑州大学水利与交通学院河南郑州450001 郑州大学黄河生态保护与区域协调发展研究院河南郑州450001

南水北调工程会引起所涉区域极端气候发生变化,同时极端气候事件对调水工程运行也存在影响。研究以1960—2020年气象观测数据为基础构建极端气象要素指标体系,采用变化范围法(RVA)与集对分析法(SPA)对南水北调影响区极端气象要素的改变... 详细信息

南水北调工程会引起所涉区域极端气候发生变化,同时极端气候事件对调水工程运行也存在影响。研究以1960—2020年气象观测数据为基础构建极端气象要素指标体系,采用变化范围法(RVA)与集对分析法(SPA)对南水北调影响区极端气象要素的改变程度进行量化计算,揭示了经济发展、气候变化与南水北调工程影响下区域极端气象要素的演变规律。结果表明:在经济发展与气候变化影响下,1960—2020年南水北调影响区极端气象要素指标综合改变度总体为上升趋势,并出现了明显的区域差异性,中线地区极端气候改变度显著大于东线,而两线水源区变化程度低于输水区和受水区;调水前后对比分析表明,工程调水对中线的影响大于东线,且受水区极端气象要素变化程度更为明显;对极端气象要素分析发现,极端蒸发受气候变化与经济发展影响显著,极端气温受调水工程影响变化较大,极端降水受外界扰动变化不明显。

关键词：极端气象要素变化范围法集对分析法综合改变度南水北调工程

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高职班主任德育实践路径的优化

宿州教育学院学报 2024年第3期27卷 52-56页

作者：王志强苏绍辉宿州职业技术学院农业科学系安徽宿州234101

高职院校承担着为社会培养高素质技术技能型人才的重任,因此必须把德育工作放在首位,使培养的学生不仅掌握扎实的专业技能,还具备良好的职业道德,以满足各类企业的需求。在德育实施的过程中,班主任是主要组织者和参与者,但由于受到传统... 详细信息

高职院校承担着为社会培养高素质技术技能型人才的重任,因此必须把德育工作放在首位,使培养的学生不仅掌握扎实的专业技能,还具备良好的职业道德,以满足各类企业的需求。在德育实施的过程中,班主任是主要组织者和参与者,但由于受到传统教育理念的影响,仍存在德育工作重视不够、德育能力有待提升等问题。在对高职班主任德育工作的重要性及其现状分析的基础上,探究德育工作实践路径优化策略,旨在为高职德育工作的有效开展提供参考。

关键词：高职班主任德育工作现状分析实践路径优化

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反刍动物冷应激及智能监测研究进展

中国畜牧杂志 2024年第5期60卷 34-42页

作者：苏少晖胡宇超王园安晓萍齐景伟内蒙古农业大学动物科学学院内蒙古呼和浩特010018 智慧畜牧自治区高等学校重点实验室内蒙古自治区高校智慧畜牧集成攻关大平台内蒙古自治区草食家畜饲料技术研究中心国家乳业技术创新中心奶牛繁育与养殖技术研究中心内蒙古呼和浩特010018

在低温寒冷环境下,反刍动物的冷应激时有发生,冷应激影响动物机体的多项指标与功能,在降低动物健康水平与动物福利的同时,还严重影响到养殖场的经济效益。随着反刍动物规模化健康养殖的快速发展,具有高效率、低人工优点的动物智能监测... 详细信息

在低温寒冷环境下,反刍动物的冷应激时有发生,冷应激影响动物机体的多项指标与功能,在降低动物健康水平与动物福利的同时,还严重影响到养殖场的经济效益。随着反刍动物规模化健康养殖的快速发展,具有高效率、低人工优点的动物智能监测手段愈加成熟。本文结合国内外现有研究,综述了冷应激对反刍动物的影响以及对冷应激智能监测的研究进展,为保障恶劣环境下动物的健康福利,提高养殖场的经济效益,以及未来的反刍动物冷应激研究提供参考。

关键词：冷应激反刍动物应激影响智能监测

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Multidisciplinary Modeling and Optimization Method of Remote Sensing Satellite Parameters Based on SysML-CEA

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Computer Modeling in Engineering & Sciences 2023年第5期135卷 1413-1434页

作者： Changyong Chu Chengfang Yin Shuo Shi shaohui su Chang Chen School of Mechanical Engineering Hangzhou Dianzi UniversityHangzhou310018China State Key Laboratory of Digital Manufacturing Equipment and Technology Huazhong University of Science and TechnologyWuhan430074China

To enhance the efficiency of system modeling and optimization in the conceptual design stage of satellite parameters,a system modeling and optimization method based on System Modeling Language and Co-evolutionary Algorithm is *** first,the objectives of satellite mission and optimization problems are clarified,and a design matrix of discipline structure is constructed to process the coupling relationship of design variables and constraints of the orbit,payload,power and quality *** order to solve the problem of increasing nonlinearity and coupling between these disciplines while using a standard collaborative optimization algorithm,an improved genetic algorithm is proposed and applied to system-level and discipline-level ***,the CO model of satellite parameters is solved through the collaborative simulation of Cameo Systems Modeler(CSM)and *** result obtained shows that the method proposed in this paper for the conceptual design phase of satellite parameters is efficient and *** can shorten the project cycle effectively and additionally provide a reference for the optimal design of other complex projects.

关键词： SysML remote sensing satellite multidisciplinary design optimization collaborative optimization

SPECT与MCE在STEMI术后冠脉微循环灌注的相关性研究

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长春中医药大学学报 2024年第4期40卷 442-445页

作者：林玉萍黄锦杭张海林李盛卫展扬苏少辉南方医科大学第十附属医院/东莞市人民医院心血管内科广东东莞523000 南方医科大学第十附属医院/东莞市人民医院超声科广东东莞523000

目的探究单光子发射计算机断层成像术(SPECT)与心肌声学造影(MCE)评估急性ST段抬高型心肌梗死(STEMI)介入术后冠脉微循环灌注的相关性研究。方法选择经皮冠状动脉介入术(PCI)术后的STEMI患者80例,采用随机数表法分为SPECT组和MCE组,各4... 详细信息

目的探究单光子发射计算机断层成像术(SPECT)与心肌声学造影(MCE)评估急性ST段抬高型心肌梗死(STEMI)介入术后冠脉微循环灌注的相关性研究。方法选择经皮冠状动脉介入术(PCI)术后的STEMI患者80例,采用随机数表法分为SPECT组和MCE组,各40例。SPECT组采用SPECT检测,MCE组采用MCE检测。比较2组心功能、影像学诊断效果、冠脉功能、不良心血管事件(MACE)以及出血事件发生率。结果术后,2组LVEF、LVESD、LVEDD、FFR、CFR均得到改善(P0.05)。SPECT组真阳性率(TPR)、真阴性率(TNR)、阳性预测值、阴性预测值与MCE组TPR、TNR、阳性预测值、阴性预测值比较,差异均无统计学意义(P>0.05);SPECT组MACE发生率、出血事件发生率与MCE组比较,差异均无统计学意义(P>0.05)。结论SPECT与MCE影像学检查手段评估PCI术后STEMI患者的冠脉微循环灌注情况有很高的应用价值,可提高评估心功能准确度,减少有创操作身体损害。

关键词：冠心病经皮冠状动脉介入术急性ST段抬高型心肌梗死单光子发射计算机断层成像术声学造影

A projected Newton algorithm based on chemically allowed interval for chemical equilibrium computations

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Frontiers of Chemical Science and Engineering 2024年第3期18卷 25-37页

作者： Hongbin Lu shaohui Tao Xiaoyan sun Li Xia Shuguang Xiang Institute of Process Systems Engineering College of Chemical EngineeringQingdao University of Science and TechnologyQingdao266042China

The chemical equilibrium equations utilized in reactive transport modeling are complex and nonlinear,and are typically solved using the Newton-Raphson *** this algorithm is known for its quadratic convergence near the solution,it is less effective far from the solution,especially for ill-conditioned *** such cases,the algorithm may fail to converge or require excessive *** address these limitations,a projected Newton method is introduced to incorporate the concept of *** method constrains the Newton step by utilizing a chemically allowed interval that generates feasible descending ***,we utilize the positive continuous fraction method as a preconditioning technique,providing reliable initial values for solving the *** numerical results are compared with those derived using the regular Newton-Raphson method,the Newton-Raphson method based on chemically allowed interval updating rules,and the bounded variable least squares method in six different test *** numerical results highlight the robustness and efficacy of the proposed algorithm.

关键词： chemical equilibrium reactive transport modeling numerical methods projected Newton method

Chemical Scissors Tailored Nano‑Tellurium with High‑Entropy Morphology for Efficient Foam‑Hydrogel‑Based Solar Photothermal Evaporators

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Nano-Micro Letters 2024年第3期16卷 149-168页

作者： Chenyang Xing Zihao Li Ziao Wang shaohui Zhang Zhongjian Xie Xi Zhu Zhengchun Peng State Key Laboratory of Radio FrequencyHeterogeneous Integration Shenzhen UniversityShenzhen 518060People’s Republic of China Center for Stretchable Electronics and NanoSensors College of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhen 518060People’s Republic of China School of Science and Engineering The Chinese University of Hong KongShenzhenShenzhen 518172People’s Republic of China Institute of Pediatrics Shenzhen Children’s HospitalShenzhen 518038GuangdongPeople’s Republic of China International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education Institute of Microscale OptoelectronicsShenzhen UniversityShenzhen 518060People’s Republic of China

The development of tellurium(Te)-based semiconductor nanomaterials for efficient light-to-heat conversion may offer an effective means of harvesting sunlight to address global energy ***,the nanosized Te(nano-Te)materials reported to date suffer from a series of drawbacks,including limited light absorption and a lack of surface ***,we report the preparation of nano-Te by electrochemical exfoliation using an electrolyzable room-temperature ionic ***,cations,and their corresponding electrolytic products acting as chemical scissors can precisely intercalate and functionalize bulk *** resulting nano-Te has high morphological entropy,rich surface functional groups,and broad light *** also constructed foam hydrogels based on poly(vinyl alcohol)/nano-Te,which achieved an evaporation rate and energy efficiency of 4.11 kg m^(−2)h^(−1)and 128%,respectively,under 1 sun ***,the evaporation rate was maintained in the range 2.5-3.0 kg m^(−2)h^(−1)outdoors under 0.5-1.0 sun,providing highly efficient evaporation under low light conditions.

关键词： Tellurium High entropy Electrochemical modification Solar absorption Evaporation rate

Experimental study on the influences of cutter geometry and material on scraper wear during shield TBM tunnelling in abrasive sandy ground

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Journal of Rock Mechanics and Geotechnical Engineering 2024年第2期16卷 410-425页

作者： shaohui Tang Xiaoping Zhang Quansheng Liu Qi Zhang Xinfang Li Haojie Wang Key Laboratory of Safety for Geotechnical and Structural Engineering of Hubei Province School of Civil EngineeringWuhan UniversityWuhan430072China State Key Laboratory of Water Resources and Hydropower Engineering Science Wuhan UniversityWuhan430072China

When shield TBM tunnelling in abrasive sandy ground,the rational design of cutter parameters is critical to reduce tool wear and improve tunnelling ***,the influence mechanism of cutter parameters on scraper wear remains unclear due to the lack of a reliable test *** and material optimisation are often based on subjective experience,which is unfavourable for improving scraper geological *** the present study,the newly developed WHU-SAT soil abrasion test was used to evaluate the variation in scraper wear with cutter geometry,material and *** influence mechanism of cutter parameters on scraper wear has been revealed according to the scratch characteristics of the scraper *** geometry and material parameters have been optimised to reduce scraper *** results indicate that the variation in scraper wear with cutter geometry is related to the cutting resistance,frictional resistance and stress *** appropriate increase in the front angle(or back angle)reduces the cutting resistance(or frictional resistance),while an excessive increase in the front angle(or back angle)reduces the edge angle and causes stress *** optimal front angle,back angle and edge angle for quartz sand samples areα=25°,β=10°andγ=55°,*** wear resistance of the modelled scrapers made of different metal materials is related to the chemical elements and *** wear resistances of the modelled scrapers made of 45#,06Cr19Ni10,42CrMo4 and 40CrNiMoA are 0.569,0.661,0.691 and 0.728 times those made of WC-Co,*** the alloy hardness is less than 47 HRC(or greater than 58 HRC),scraper wear decreases slowly with increasing alloy hardness as the scratch depth of the particle asperity on the metal surface stabilizes at a high(or low)***,when the alloy hardness is between 47 HRC and 58 HRC,scraper wear decreases rapidly with increasing alloy hardness as the scratch depth transitions

关键词： Shield TBM Scraper wear Cutter shape Metal material Alloy hardness

Two-Dimensional Metallophthalocyanine Nanomaterials for Electrocatalytic Energy Conversion

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Energy & Environmental Materials 2024年第4期7卷 364-385页

作者： Xinqi Wang shaohui sun Jiahao Yao Hao Wan Renzhi Ma Wei Ma School of Chemical Engineering and Zhongyuan Critical Metals Laboratory Zhengzhou University Research Center for Materials Nanoarchitectonics (MANA) National Institute for Materials Science (NIMS)

Crowing energy demand drives the rapid development of clean and reliable energy *** the past years,the exploration of novel materials with considerable efficiency and durability has drawn attention in the area of elec... 详细信息

关键词： conjugated nanostructure electrocatalysis 2D metallophthalocyanines