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Journal of Energy Chemistry 2022年第11期31卷 404-411,I0011页

作者： Weijian Wu Zhen Gao Qun Li Zhiya Wang Shiyin Liu Hongbo Wu yuanchun zhao Yalong Jiao Xiaojia zhao Hebei Key Laboratory of Inorganic Nano-materials College of Chemistry and Materials ScienceHebei Normal UniversityShijiazhuang 050024HebeiChina Hebei Key Laboratory of Photophysics Research and Application College of PhysicsHebei Normal UniversityShijiazhuang 050024HebeiChina State Key Laboratory of Metastable Materials Science and Technology Yanshan UniversityQinhuangdao 066004HebeiChina

A mixture of Ni and Fe oxides is among the most commonly active catalysts for the oxygen evolution reaction(OER)during the water oxidation process.In particular,Ni oxide incorporated with even a small amount of Fe leads to substantively enhanced OER activity.However,the critical role of Fe species during the electrocatalytic process is still under evaluation.Herein,we report nickel(oxy)hydroxide incorporated with Fe through the surface reconstruction of a bimetallic metal-organic framework(NiFe-MOF)during the water oxidation process.The spectroscopic investigations with theoretical calculations reveal the critical role of Fe in promoting the formation of highly oxidized Ni^(4+),which directly correlates with an enhanced OER activity.Both the geometric and electronic structu res of the as-reconstructed Ni_(1-x)Fe_(x)OOH electrocatalysts can be delicately tuned by the Ni-Fe ratio of the bimetallic NiFe-MOF,further affecting the catalytic activity.As a result,the Ni_(1-x)Fe_(x)OOH derived from Ni_(0.9)Fe_(0.1)-MOF delivers low overpotentials of 260 mV at 10 mA cm^(-2)and 400 mV at 300 mA cm^(-2).

关键词： Structural transformation Bimetallic metal-organic framework Oxygen evolution reaction In-situ Raman spectroscopy High-valence metal sites

Bayesian Network Based Imprecise Probability Estimation Method for Wind Power Ramp Events

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Journal of Modern Power Systems and Clean Energy 2021年第6期9卷 1510-1519页

作者： yuanchun zhao Wenli Zhu Ming Yang Mengxia Wang Key Laboratory of Power System Intelligent Dispatch and Control Shandong University State Grid Jinan Power Company

Although wind power ramp events(WPREs)are relatively scarce,they can inevitably deteriorate the stability of power system operation and bring risks to the trading of electricity market.In this paper,an imprecise conditional probability estimation method for WPREs is proposed based on the Bayesian network(BN)theory.The method uses the maximum weight spanning tree(MWST)and greedy search(GS)to build a BN that has the highest fitting degree with the observed data.Meanwhile,an extended imprecise Dirichlet model(IDM)is developed to estimate the parameters of the BN,which quantificationally reflect the ambiguous dependencies among the random ramp event and various meteorological variables.The BN is then applied to predict the interval probability of each possible ramp state under the given meteorological conditions,which is expected to cover the target probability at a specified confidence level.The proposed method can quantify the uncertainty of the probabilistic ramp event estimation.Meanwhile,by using the extracted dependencies and Bayesian rules,the method can simplify the conditional probability estimation and perform reliable prediction even with scarce samples.Test results on a real wind farm with three-year operation data illustrate the effectiveness of the proposed method.

关键词： Bayesian network(BN) conditional probability imprecise Dirichlet model(IDM) imprecise probability wind power ramp events

Improved photoconductive properties of composite nanofibers based on aligned conjugated polymer and single-walled carbon nanotubes

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Nano Research 2013年第2期6卷 149-158页

作者： Florian Massuyeau yuanchun zhao Abdel Aziz El Mel Abu Yaya Frederic Geschier Eric Gautron Serge Lefrant Jean Yves Mevellec Chris Ewels Chain-Shu Hsu Eric Faulques Jany Wery Jean Luc Duvail fnstitut des Materiaux Jean Rouxel UMR6502 CNRS Universite de Nantes 2 rue de la Houssiniere F-44322 Nantes France Department of Applied Chemistry Chiao Tung University 1001 Ta Hsueh Road Hsin-Chu 30010 Taiwan China

We successfully address the challenge of aligning single-walled carbon nanotubes (SWNTs) and conjugated polymer chains in composite nanofibers for enhancing their opto-electrical properties. A pore-filling template strategy has been developed to prepare such nanocomposites from SWNTs and poly(para-phenylene vinylene) (PPV) chains, with both species well-oriented aligned along the pore axis. Addition of the SWNTs leads to a remarkable increase in photocurrent of four orders of magnitude as compared to equivalent pristine PPV nanofibers. Further analysis indicates that the strong photocurrent enhancement is not simply an effect of alignment, but additionally benefits from alignment-enhanced interaction of polymer chains with SWNTs, as supported by density functional theory (DFT) calculations.

关键词：单壁碳纳米管复合纳米纤维共轭聚合物光导性能排列聚合物链纳米复合材料密度泛函理论

The Structure and Dynamics of Ions in Confined Water Environment Investigated by Infrared Spectroscopy

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The Structure and Dynamics of Ions in Confined Water Environ...

Sanhua Tang(三化汤) protects against ischemic stroke by preventing blood-brain barrier injury: a network pharmacology and in vivo experiments

第十五届全国化学动力学会议

作者：周德霞 yuanchun zhao Hongtao Bian Key Laboratory of Applied Surface and Colloid Chemistry Ministry of EducationSchool of chemistry and Chemical EngineeringShaanxi Normal University

Water science has been the frontier of physics, chemistry, environmental science and biology studies. The hydrogen bond network of water molecule is crucial for its peculiar physical and chemical properties. However, in most of the biological related living systems, the hydrogen bond of water molecule is encountered by the biomolecules and separated in the confined environment. The water molecules confined in nanometer scale confinement showed distinct behavior compared with bulk water. The reverse micelles（RMs） provides a model systems for investigating the structure and dynamics of water molecule in confined environment. Here, we utilize the Infrared spectroscopy to study the structure and dynamics of azide（N3-） and thiocyanate（SCN-） anions in different reverse micelle systems where the anions were used as a vibrational probe to report the local structure of water molecules. At the same time, the diameter of the waterpool in different reverse micelles is measured by DLS. The Infrared spectroscopy results demonstrated that RMs exhibit reduced polarity and a reduced and disrupted hydrogen bonding network compared to the bulk water. And Dynamic Light Scattering results showed that with the increase of ω0, the diameter of the waterpool in the reverse micelles increases. And after adding ions, the diameter of the pool in the reverse micelle has increased slightly compared to the reverse micelles without the addition of ions. The location and structure of the ions in the reverse micelle is the focus of our next study.

关键词： confined water environment reverse micelle system IR（infra-red spectrum） SCN-and N3-ions DLS

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Journal of Traditional Chinese Medicine 2024年第4期 794-803页

作者： LUO Shan YANG Fan CHEN yuanchun zhao Ruoxi LIU Haiye GAO Fei MA Wencan GAO Weijuan YU Wentao College of Basic Medicine Hebei University of Chinese Medicine Graduate School Hebei University of Chinese Medicine College of Acupuncture and Massage Hebei University of Chinese Medicine Hebei Key Laboratory of Chinese Medicine Research on Cardio-Cerebrovascular Diseases Hebei International Joint Research Centre for Acupuncture and Moxibustion of Traditional Chinese Medicine

OBJECTIVE: To assess the effect and mechanism of Sanhua Tang(三化汤, SHT) in treating ischemic stroke(IS) through the "Kaitong Xuanfu" theory by using network pharmacology and animal experiments. METHODS: The active ingredients and targets of SHT and IS were screened by public databases such as Traditional Chinese Medicine systems pharmacology, GeneCards, and online mendelian inheritance in man. Visual network topographies were constructed using R, Cytoscape 3.6.0, AutoDockTools, a user-sponsored molecular visualization system on an open-source foundation, and other software to analyze the correlation between targets and active ingredients. The middle cerebral artery occlusion(MCAO) model was established by operation. Animals were divided into the Sham group, MCAO group(M group), aloe-emodin(AE) group(MCAO rats treated with aloe-emodin), SHT at low dosage(SL group)(MCAO rats treated with SL), SHT at medium dosage(SM group), and SHT at high dosage(SH group). 2,3,5-triphenyl tetrazolium chloride staining was used to detect the volume of cerebral infarction; Nissl staining was used to observe the morphology of neuronal cells; transmission electron microscopy was used to observe the integrity of the blood-brain barrier(BBB); enzymelinked immunosorbent assay was used to detect the content of interleukin-6(IL-6), IL-10, tumor necrosis factor α(TNF-α) in serum. Western blot was used to detect the expression of vascular endothelial growth factor A(VEGFA) protein in the cerebral ischemic penumbra. RESULTS: Using network pharmacology and molecular docking validation, four active ingredients(lignan, naringenin, aloe-rhodopsin, and β-sitosterol), seven target proteins(protein kinase b 1, IL-6, TNF, VEGFA, TP53, jun proto-oncogene, and cysteinyl aspartate specific proteinase 3), and inflammatory signaling pathways were identified. Animal experiments showed that the SH and AE groups had fewer neurological deficits, reduced brain infarct volumes, decreased serum inflammatory factor levels, increased expression of VEGFA protein, an

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地方政府竞争促进了地区碳排放强度吗?

经济与管理评论 2022年第2期38卷 136-146页

作者：李治国杨雅涵赵园春中国石油大学(华东)经济管理学院山东青岛266580 悉尼大学商学院新南威尔士州悉尼2006

碳排放强度是低碳发展模式的重要衡量标准之一,降低碳强度已成为中国亟待解决的重要问题,政府干预是解决这一问题的重要手段。通过构建“古诺竞争模型”,运用数理模型提出假说,进一步基于我国2006-2019年的省级面板数据,运用中介效应与... 详细信息

碳排放强度是低碳发展模式的重要衡量标准之一,降低碳强度已成为中国亟待解决的重要问题,政府干预是解决这一问题的重要手段。通过构建“古诺竞争模型”,运用数理模型提出假说,进一步基于我国2006-2019年的省级面板数据,运用中介效应与门槛效应分析地方政府竞争对碳排放强度的影响。研究发现:地方政府竞争直接导致了地区碳排放强度的增加,且通过环境规制影响碳强度的传导路径存在,地方政府竞争通过降低环境规制强度从而增加了地区碳排放强度;随着地方政府竞争水平的降低,环境规制对碳排放强度的影响呈倒N型关系。

关键词：地方政府竞争环境规制碳排放强度中介效应门槛回归

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企业预算业绩目标设定的理论主张与实操要点

管理会计研究 2023年第1期 36-44页

作者：谢素娟赵园春王淇中国海洋大学管理学院

预算业绩目标设定,是预算管理、业绩评价、经理人激励机制中的重要内容。如何科学合理实施业绩目标设定,一直是管理会计的热点和管理实践的难点。本文首先梳理业绩目标设定理论研究中经济学、心理学和社会学的理论基础;其次,总结业绩目... 详细信息

预算业绩目标设定,是预算管理、业绩评价、经理人激励机制中的重要内容。如何科学合理实施业绩目标设定,一直是管理会计的热点和管理实践的难点。本文首先梳理业绩目标设定理论研究中经济学、心理学和社会学的理论基础;其次,总结业绩目标设定在实践中比较常见的几类难点问题,包括财务指标与非财务指标的选择、预算业绩目标设定中的经理人自利行为及其治理、企业VUCA经营环境与固化的预算业绩目标的严重不匹配三大问题;再次,本文提出有效实施业绩目标设定的四项实操要点,包括VUCA时代实施动态的预算业绩目标的设定机制、匹配性使用绝对数与相对数目标、导入多重目标值或多期业绩目标、优化预算业绩目标的考核频率。

关键词：预算业绩目标设定绝对值目标多期业绩目标

考虑日周期性影响的光伏功率爬坡事件非精确概率预测

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电力系统自动化 2019年第20期43卷 31-38页

作者：朱文立张利杨明王勃赵元春电网智能化调度与控制教育部重点实验室(山东大学) 山东省济南市250061 新能源与储能运行控制国家重点实验室中国电力科学研究院有限公司北京市100192

光伏功率爬坡事件的可靠预测对电力系统运行决策至关重要。针对现有光伏发电功率爬坡事件预测存在误报与漏报的问题,提出了一种考虑日周期性影响的光伏功率爬坡事件非精确概率预测方法。首先,定义了新的光伏爬坡特征量,以有效剔除光伏... 详细信息

光伏功率爬坡事件的可靠预测对电力系统运行决策至关重要。针对现有光伏发电功率爬坡事件预测存在误报与漏报的问题,提出了一种考虑日周期性影响的光伏功率爬坡事件非精确概率预测方法。首先,定义了新的光伏爬坡特征量,以有效剔除光伏发电功率中的日趋势性变化。进而,为了避免光伏爬坡样本数据有限可能引发的预测误差,通过结构学习构建了最优信度网络,对光伏功率爬坡事件进行非精确概率预测;其中,信度网络节点关联的非精确条件概率由多状态随机变量的非精确狄利克雷模型统计得到。最后,根据给定气象条件,推理计算各爬坡状态发生的概率区间。基于某光伏电站数据的算例仿真验证了所述方法的有效性,表明所提方法可有效捕捉光伏发电功率变动中由气象条件引发的突变事件。

关键词：光伏功率爬坡事件日周期性非精确概率条件概率信度网络

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布氏田鼠哺乳期低温经历抑制成年期神经再生

兽类学报 2019年第5期39卷 485-495页

作者：赵园春张学英王德华中国科学院动物研究所农业虫害鼠害综合治理研究国家重点实验室北京100101 中国科学院大学北京100049

哺乳动物在出生前后所经历的环境条件对其成年后的行为和生理等具有重要影响。环境温度是影响动物后代表型的重要因素之一。本研究将分娩当天的布氏田鼠母体和幼仔在常温(23℃±1℃)或低温(4℃±1℃)饲养,断乳(21日龄)时转至常温环境,至... 详细信息

哺乳动物在出生前后所经历的环境条件对其成年后的行为和生理等具有重要影响。环境温度是影响动物后代表型的重要因素之一。本研究将分娩当天的布氏田鼠母体和幼仔在常温(23℃±1℃)或低温(4℃±1℃)饲养,断乳(21日龄)时转至常温环境,至第63日龄时再随机将两组动物各分为常温组和低温暴露组,期间检测体重、摄食量、静止代谢率、认知能力和神经细胞增殖和存活等,以验证哺乳期的低温经历可影响成年动物的代谢生理、行为表型和相关脑区神经再生的假说。结果发现:哺乳期低温经历导致成年布氏田鼠摄食量显著降低,与代谢有关的下丘脑以及学习记忆有关的海马区细胞增殖和存活数量减少。当动物在成年期面临冷暴露时,与哺乳期常温经历的动物相比,哺乳期低温经历的动物摄食量较低,在Y迷宫新异臂中的穿梭次数和停留时间显著降低,但海马和下丘脑部分核团的细胞增殖以及海马CA的细胞存活明显升高。这表明哺乳期低温经历对布氏田鼠的能量代谢、行为和相关脑区的成体神经再生产生了持久的抑制效应,但成年后再次面对低温时,动物的代谢能力和代谢及学习记忆相关脑区的神经细胞可塑性优于哺乳期未曾经历低温的动物。

关键词：布氏田鼠哺乳期低温经历能量代谢行为神经再生

再造传统:英属印度1877年帝国杜尔巴仪式

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全球史评论 2021年第2期 108-124,330页

作者：赵媛春北京师范大学历史学院

1876年4月27日,英国议会通过了《女皇称号》法案,宣布维多利亚女王加冕为印度女皇,并于1877年1月1日在印度德里举行了盛大的加冕礼仪式。为了借机拉拢印度土邦王公、巩固英属印度的稳定,英印政府对印度传统政治文化中的“杜尔巴”(Durb... 详细信息

1876年4月27日,英国议会通过了《女皇称号》法案,宣布维多利亚女王加冕为印度女皇,并于1877年1月1日在印度德里举行了盛大的加冕礼仪式。为了借机拉拢印度土邦王公、巩固英属印度的稳定,英印政府对印度传统政治文化中的“杜尔巴”(Durbar)进行再造,结合游行、致敬礼、授勋、阅兵式等西方仪式,打造出一整套宣扬帝国权威、巩固印度本土贵族在英帝国荣誉体系中的附属关系的帝国仪式,此后帝国杜尔巴成为英王加冕印度皇帝时最重要的仪式,杜尔巴式的政治集会也成为印度社会的“新传统”。这一看似简单的文化现象,实际上是英国宣告对印度的权威、展示英帝国的一致性和永恒性的公开发声,映射出19世纪下半叶英国人的帝国文化心态。帝国杜尔巴虽然在英国国内引起了对帝国典礼的狂热情绪,在印度却因为知识界的觉醒逐渐遭遇阻力,并为印度民族主义提供了批判发声的平台。

关键词：英帝国印度加冕礼杜尔巴