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Journal of Modern Power Systems and Clean Energy 2021年第1期9卷 138-147页

作者： Saniye Maihemuti Weiqing wang haiyun wang Jiahui Wu Xinjiang University UrumqiChina

Large-scale voltage collapse incidences, which result in power outages over large regions and extensive economic losses, are presently common occurrences worldwide. To avoid voltage collapse and operate more safely and reliably, it is necessary to analyze the voltage security operation region(VSOR) of power systems, which has become a topic of increasing interest lately. In this paper, a novel improved particle swarm optimization and recursive least square(IPSO-RLS) hybrid algorithm is proposed to determine the VSOR of a power system. Also, stability analysis on the proposed algorithm is carried out by analyzing the errors and convergence accuracy of the obtained results. Firstly, the voltage stability and VSOR-surface of a power system are analyzed in this paper. Secondly, the two algorithms,namely IPSO and RLS algorithms, are studied *** on this understanding, a novel IPSO-RLS hybrid algorithm is proposed to optimize the active and reactive power,and the voltage allowed to identify the VSOR-surface accurately. Finally, the proposed algorithm is validated by using a simulation case study on three wind farm regions of actual Hami Power Grid of China in DIg SILENT/Power Factory *** error and accuracy of the obtained simulation results are analyzed and compared with those of the particle swarm optimization(PSO), IPSO and IPSO-RLS hybrid algorithms.

关键词： Voltage stability renewable energy improved particle swarm optimization(IPSO) recursive least square(RLS) voltage security operation region(VSOR)

食欲素系统在睡眠剥夺损伤学习记忆功能中的研究进展

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国际麻醉学与复苏杂志 2024年第4期45卷 439-443页

作者：刘欢王海云天津医科大学三中心临床学院南开大学附属第三中心医院天津市重症疾病体外生命支持重点实验室天津市人工细胞工程技术研究中心天津市肝胆疾病研究所天津300170

睡眠剥夺(SD)是指由外界或自身原因导致的睡眠缺乏状态。SD对人的身心健康产生深远的影响,人们也越发关注其对认知功能的影响,但其相关机制尚不明确,且缺乏安全、有效的治疗手段。食欲素(orexin)是由下丘脑产生的主要在中枢系统起作用... 详细信息

睡眠剥夺(SD)是指由外界或自身原因导致的睡眠缺乏状态。SD对人的身心健康产生深远的影响,人们也越发关注其对认知功能的影响,但其相关机制尚不明确,且缺乏安全、有效的治疗手段。食欲素(orexin)是由下丘脑产生的主要在中枢系统起作用的神经肽,近年来已发现其对调节摄食、睡眠周期、认知等多方面有广泛作用,文章对orexin在睡眠与学习记忆中的可能机制进行综述,为SD相关认知功能障碍的机制探索和临床治疗提供新的角度。

关键词：睡眠剥夺食欲素睡眠-觉醒周期

时尚元素在高校健美操课堂教学改革中的作用探究

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冰雪体育创新研究 2024年第3期 67-69页

作者：陈抗王海云广州商学院体育学院广东广州511363

该文运用文献资料法、访谈法对部分高校健美操课程开展现状进行研究,发现传统健美操强调操化动作,教学内容落后,教学方式单一,观赏性不强,视觉效果差,已经满足不了新时期大学生的学习需求。而时尚元素的动作比较时尚、多样、灵活,并具... 详细信息

该文运用文献资料法、访谈法对部分高校健美操课程开展现状进行研究,发现传统健美操强调操化动作,教学内容落后,教学方式单一,观赏性不强,视觉效果差,已经满足不了新时期大学生的学习需求。而时尚元素的动作比较时尚、多样、灵活,并具有社交性、休闲性、审美性、团体性、表演性及观赏性,且形式相对活泼,内容不拘一格,音乐流行,紧跟潮流,节奏明快,容易让人引起共鸣,增加学生之间的交流与师生互动。因此有必要在高校健美操课堂教学中融入时尚元素,激发学生的学习兴趣和积极性,让更多的学生选择该课程以提升课堂教学质量,并达成课程目标。研究结果发现,提高健美操课堂教学质量应该做到融入时尚元素,优化教学内容;改变教学方法,营造良好课堂气氛;线上线下混合教学,完美互补与衔接;突出学生的主体地位;改善课程评价方法,注重终结性评价和过程性评价。

关键词：时尚元素高校健美操教学质量

维普期刊数据库博看期刊

一种基于并充串放电变换的新型直流风电机组及其控制技术

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电网技术 2024年第4期48卷 1487-1497,I0034,I0035,I0036页

作者：韩海洋李战龙王海云冯其塔艾斯卡尔郭锐刘香苹可再生能源发电与并网控制教育部工程研究中心(新疆大学) 新疆维吾尔自治区乌鲁木齐市830017 北京金风科创风电设备有限公司北京市通州区100176

直流风电机组(DC wind turbine,DCWT)作为全直流风力发电系统的关键基础设备,其高效的拓扑结构和稳定的控制策略对于全直流风力发电系统的运行有着重要的影响。为解决目前DCWT电能变换环节过多造成的效率较低、自启动控制难度高以及故... 详细信息

直流风电机组(DC wind turbine,DCWT)作为全直流风力发电系统的关键基础设备,其高效的拓扑结构和稳定的控制策略对于全直流风力发电系统的运行有着重要的影响。为解决目前DCWT电能变换环节过多造成的效率较低、自启动控制难度高以及故障穿越时对辅助电路依赖造成的可靠性较低等问题,提出了一种基于并充串放电变换的新型直流风电机组的拓扑结构。基于该拓扑中所采用的新型直流变换器中半桥桥臂与全桥桥臂在低压侧并联、高压侧串联的动态连接方式的特点,设计了该DCWT在不同工况下的运行控制策略;并分析了DCWT在损耗、自启动、直流故障处理等方面的运行特性。通过对比计算,验证了所提新型DCWT拓扑在通过减少电能变换环节,可有效提高能量传输效率;另通过PSCAD/EMTDC搭建了基于新型DCWT的并联型全直流发电系统仿真模型,经风电系统内DCWT在稳态、动态等正常运行工况以及故障DCWT动态切入切出、直流短路等故障运行工况下的仿真,验证了该新型DCWT在具有可行性的前提下,具备较低控制难度的自启动方式以及高可靠性的故障穿越能力。

关键词：新型直流风电机组新型直流变换器拓扑结构控制策略自启动故障穿越

Performance evaluation for sustainability of wind energy project using improved multi-criteria decision-making method

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现代电力系统与清洁能源学报（英文） 2019年第5期7卷 1165-1176页

作者： Jiahui WU haiyun wang Weiqing wang Qiang ZHANG College of Electrical Engineering Xinjiang UniversityUrumqi 830047China State Grid Xinjiang Electric Power Research Institute Urumqi 830011China

Wind power can be an efficient way to alleviate energy shortage and environmental pollution,and to realize sustainable development in terms of energy *** sustainability assessment of a wind project among its alternatives is a complex task that cannot be solely simplified to environmental or economic *** requires the consideration of its technological and social aspects as well as other *** paper proposes a new method for selecting the most sustainable wind *** method is based on multi-criteria decision-making *** analytic hierarchy process and entropy weight method are combined to determine the weights of evaluation indexes,and an innovative index-weight optimization method based on the Lagrange conditional extremum *** fuzzy technique for order preference by similarity to the ideal solution is applied to rank wind project alternatives considering functionality and proportionality of the ***,the sensitive analysis is applied to verify the robustness of the proposed *** applicability of the method is demonstrated on a case study from China,where three main wind projects are analytically compared and *** results indicated that the sustainable level of calculated wind power can provide a reference point for the planning and operation of the wind *** results show that the proposed method is of both theoretical significance and practical application in engineering.

关键词： Analytic hierarchy process Comprehensive evaluation index Entropy method Fuzzy technique Order preference Wind power sustainability level

Site response in the Qionghai Basin in the Wenchuan earthquake

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Earthquake Engineering and Engineering Vibration 2013年第2期12卷 195-199页

作者： wang haiyun Xie Lili wang Suyang Ye Peng Key Laboratory of Earthquake Engineering and Engineering Vibration Institute of Engineering MechanicsChina Earthquake Administration

Amplification effects of soil site response can significantly impact ground motions, and must be considered in the seismic fortification of buildings/structures to prevent or mitigate this potential seismic hazard. Utilizing acceleration time histories from the main shock of the Wenchuan earthquake recorded at four stations （i.e., one on bedrock and three on soil） in the Qionghai Basin, the site responses from three soil sites are studied by using the traditional spectral ratio method. The bedrock site is selected as a reference site. This study found that peak ground accelerations （PGAs） on the soil sites are much larger than on bedrock, with EW, NS and UD components of 3.96-6.58, 6.27-10.98, and 3.17-6.66 times those of the bedrock site, respectively. The amplification effects of the soil sites on ground motions in the frequency range of 0.1 Hz to 10 Hz are significant, depending on the thickness of the soil layer and the frequency content of the site. A significant amplification occurs with high frequency components of ground motion at shallow soil sites, and low and high frequency components of ground motion at intermediate soil sites.

关键词： site response traditional spectral ratio method acceleration time history Qionghai Basin Wenchuan earthquake

BCRP-BBB与右美托咪定改善轻度高胆红素血症患者术后认知功能的关系

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中华麻醉学杂志 2024年第8期44卷 927-931页

作者：孙熠王海云赵茗姝李青王一珍天津医科大学三中心临床学院天津市第三中心医院麻醉科天津市重症疾病体外生命支持重点实验室天津市人工细胞工程技术研究中心天津市肝胆疾病研究所天津300170

目的评价乳腺癌耐药蛋白(BCRP)-血脑屏障(BBB)与右美托咪定改善轻度高胆红素血症患者术后认知功能的关系。方法本研究为前瞻性研究。选择天津市第三中心医院2022年12月至2023年8月择期行胆囊切除术、胆总管探查取石术和T管引流术的胆总... 详细信息

目的评价乳腺癌耐药蛋白(BCRP)-血脑屏障(BBB)与右美托咪定改善轻度高胆红素血症患者术后认知功能的关系。方法本研究为前瞻性研究。选择天津市第三中心医院2022年12月至2023年8月择期行胆囊切除术、胆总管探查取石术和T管引流术的胆总管结石轻度高胆红素血症患者90例,性别不限,年龄55~69岁,BMI 22~28 kg/m^(2),ASA分级Ⅱ或Ⅲ级,术前简易智力状态检查量表(MMSE)评分≥20分。采用随机数字表法将患者分为2组(n=45):对照组(C组)和右美托咪定组(D组)。D组麻醉诱导后经10 min静脉输注右美托咪定负荷剂量0.5μg/kg,随后以0.6μg·kg^(-1)·h^(-1)的速率静脉输注至术毕;C组给予等容量生理盐水。于术前2 d和术后1、3、5、7、14 d时采用MMSE和蒙特利尔认知评估量表(MoCA)评估认知功能,采用ELISA法检测血清BCRP浓度、认知功能血清学指标[血清S100β、β淀粉样蛋白42(Aβ42)、MDA浓度]、BBB血清学指标[血清胶质纤维酸性蛋白(GFAP)、血小板反应蛋白1(TSP-1)和闭合蛋白5(claudin-5)浓度]。结果与C组比较,D组MMSE评分和MoCA评分升高,认知功能障碍发生率下降,血清S100β、Aβ42和MDA浓度降低,血清BCRP浓度升高,血清GFAP、claudin-5和TSP-1浓度降低(P<0.05)。结论右美托咪定改善轻度高胆红素血症患者术后认知功能的机制,可能与上调BCRP水平,改善BBB功能有关。

关键词：右美托咪啶 ATP结合盒转运体,亚家族G,成员2 血脑屏障术后认知并发症高胆红素血症胆结石

Adsorption behavior of ammonium by a bioadsorbent-Boston ivy leaf powder

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Journal of Environmental Sciences 2010年第10期22卷 1513-1518页

作者： Haiwei Liu Yuanhua Dong haiyun wang Yun Liu State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil Science Chinese Academy of Sciences Nanjing 210008 China. Tobacco Research Institute Chinese Academy of Agricultural Sciences Qingdao 266101 China Graduate University of Chinese Academy of Sciences Beijing 100049 China

The adsorption behaviors of ammonium ions from aqueous solution by a novel bioadsorbent, the Boston ivy （Parthenocissus tricuspidata） leaf powder （BPTL） were investigated. The SEM images and FT-IR spectra were used to characterize BPTL. The mathematical models were used to analyze the adsorption kinetics and isotherms. The optimum pH range for ammonium adsorption by BPTL was found to be 5-10. The adsorption reached equilibrium at 14 b.r, and the kinetic data were well fitted by the Logistic model. The intraparticle diffusion was the main rate-controlling step of the adsorption process. The high temperature was favorable to the ammonium adsorption by BPTL, indicating that the adsorption was endothermic. The adsorption equilibrium fitted well to both the Langmuir model and Freundlich model, and the maximum monolayer adsorption capacities calculated from Langmuir model were 3.37, 5.28 and 6.59 mg N/g at 15, 25 and 35~C, respectively, which were comparable to those by reported minerals. Both the separation factor （RL） from the Langmuir model and Freundiich exponent （n） suggested that the ammonium adsorption by BPTL was favorable. Therefore, the Boston ivy leaf powder could be considered a novel bioadsorbent for ammonium removal from aqueous solution.

关键词： ammonium ion bioadsorbent isotherm kinetics plant material

Differentiation of human embryonic stem cells along a hepatocyte lineage and its application in liver regeneration

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Chinese Science Bulletin 2008年第1期53卷 1-7页

作者： PEI haiyun wang YunFang PEI XueTao Department of Stem Cell and Regenerative Medicine Beijing Institute of Transfusion Medicine Beijing 100850 China

Hepatocyte transplantation and bioartificial liver (BAL) as alternatives to liver transplantation offer the possibility of effective treatment for many inherited and acquired hepatic disorders. Unfortunately, the limited availability of donated livers and the variability of their derived hepatocytes make it difficult to obtain enough viable human hepatocytes for the hepatocyte-based therapies. Embryonic stem cells (ESCs), which could be isolated directly from the blastocyst inner cell mass, have permanent self-renewal capability and developmental pluripotency and therefore might be an ideal cell source in the treatment of hepatic discords. However, differentiation of hESCs into hepatocytes with significant numbers remains a challenge. This review updates our current understanding of differentiation of ESCs into hepatic lineage cells, their future therapeutic uses and problems in liver regeneration.

关键词：胚胎干细胞肝细胞分化肝再生

数据交易企业策略及政府监管激励——基于三方演化博弈模型分析

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科技和产业 2024年第15期24卷 187-196页

作者：王珊珊王海芸姚怡帆北京市科学技术研究院创新发展战略研究所北京100089 陕西师范大学国家安全学院(政法与公共管理学院) 西安710119

识别数据交易实践的薄弱环节,推动数据要素市场发展,构建“企业-企业-政府”三方演化博弈模型,模拟演化稳定策略,识别影响数据交易的关键因素及其作用机制。研究发现:数据交易会因数据异质性、数据转化能力、市场信任度而增加,因交易成... 详细信息

识别数据交易实践的薄弱环节,推动数据要素市场发展,构建“企业-企业-政府”三方演化博弈模型,模拟演化稳定策略,识别影响数据交易的关键因素及其作用机制。研究发现:数据交易会因数据异质性、数据转化能力、市场信任度而增加,因交易成本、竞争力减损而减少;违约金具有“奖优罚劣”的双重作用,但需设置科学的赔偿力度才能发挥制度优势;政府监管的影响较小,政府补贴的作用更突出,二者相互配合更有利于发挥政策引导作用;促进数据交易的有效方法是提高数据质量和数据转化能力、加强企业互信、防范合同风险、保障数据安全、完善监管激励机制。

关键词：数据交易演化博弈数据基础制度数据要素市场数字经济