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Comparative Study on Status and Demands of Kindergarten Teacher Training——Based on the Perspective of Adaptability of Development of Kinde rgarten Curriculum Resources

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学术界 2014年第12期 285-290页

作者： Cheng Zhilong xu xuelian Chinese and Education Department Bengbu College

Kindergarten teachers' professional development is directly related to the care and teaching quality. Kindergarten teacher training is an important task of continuing education,and also is the basic way to implement the concept of lifelong education,to improve the quality of kindergarten teachers,to promote the professional development of teachers and the care and teaching quality. However,there is a gap between the status and the demands of trainings. Some trainings lack pertinence,practicability and effectiveness. Therefore,it is very important to carry on the contrast to the kindergarten teacher training status and demands and to explore the mode of the development of curriculum resources in kindergarten.

关键词： kindergarten teacher status of training training demand curriculum resources development adaptability

Cooperative effect between copper species and oxygen vacancy in Ce_(0.7−x)Zr_(x)Cu_(0.3)O_(2) catalysts for carbon monoxide oxidation

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Frontiers of Chemical Science and Engineering 2021年第6期15卷 1524-1536页

作者： Shan Wang xuelian xu Ping Xiao Junjiang Zhu Xinying Liu Institute for the Development of Energy for African Sustainability College of ScienceEngineering and TechnologyUniversity of South AfricaJohannesburg1710South Africa Hubei Key Laboratory of Biomass Fibers and Eco-dyeing&Finishing College of Chemistry and Chemical EngineeringWuhan Textile UniversityWuhan430200China

The effects of Zr doping on the existence of Cu and the catalytic performance of Ce_(0.7−x)Zr_(x)Cu_(0.3)O_(2)for CO oxidation were *** characterization results showed that all samples have a cubic structure,and a small amount of Zr doping facilitates Cu^(2+) ions entering the CeO2 lattice,but excessive Zr doping leads to the formation of surface CuO crystals ***,the number of oxygen vacancies caused by the Cu^(2+) entering the lattice(e.g.,Cu^(2+)-□-Ce^(4+);□:oxygen vacancy),and the amount of reducible copper species caused by CuO crystals,varies with the Zr *** CO oxidation tests indicated that the oxygen vacancy and the reducible copper species were the adsorption and activation sites of O_(2)and CO,respectively,and the cooperative effects between them accounted for the high CO oxidation ***,the samples x=0.1 and 0.3,which possessed the most oxygen vacancy or reducible copper species,showed the best activity for CO oxidation,with full CO conversion obtained at 110℃.The catalyst is also stable and has good resistance to water during the reaction.

关键词： Ce-Zr-Cu-O CO oxidation reducible copper species oxygen vacancy cooperative effect

Effect of preparation method on physicochemical properties and catalytic performances of LaCoO3 perovskite for CO oxidation

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Journal of Rare Earths 2019年第9期37卷 970-977,I0003页

作者： Shan Wang xuelian xu Junjiang Zhu Duihai Tang Zhen Zhao Institute of Catalysis for Energy and Environment College of Chemistry and Chemical EngineeringShenyang Normal University Shenyang 110034China College of Chemistry and Chemical Engineering Wuhan Textile UniversityWuhan 430200China Hubei Key Laboratory of Biomass Fibers and Eco-dyeing & Finishing Wuhan Textile UniversityWuhan 430200China

Perovskite oxides LaCoO3 prepared by templating,co-precipitation and sol-gel method with different complexants were systematically characterized and its catalytic performances for CO oxidation were *** samples were characterized by X-ray diffraction,thermogravimetry analysis and differential scanning calorimetry,N2 physisorption,transmission electron microscopy,temperature program reduction of hydrogen,temperature program desorption of oxygen and X-ray photoelectron spectroscopy measurement,results of which show that the properties of LaCoO3,such as surface morphology,surface area,surface compositions,redox capability,oxygen vacancy,as well as the calcination temperature and formation mechanism,depend intimately on the preparation *** tests indicate that the sample prepared by carbon templating method shows the best activity for CO oxidation,with full CO conversion obtained at 135℃.In particular,the catalyst can be activated and significant increase of activity can be obtained with the increase of reaction *** cyclic and longterm stability of catalysts were discussed and compared.

关键词： Perovskite oxides IaCoO3 Preparation method Physicochemical properties CO oxidation Rare earths

STUDY OF CH_4 AND CO OXIDATION FROM ELECTROCHEMICAL METHOD

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Chinese Science Bulletin 2006年第3期51卷 374-376页

作者： ZHU Junjiang YANG Xiangguang xu xuelian WEI Kemei National Research Center of Chemical Fertilizer Catalysts Fuzhou University Fuzhou 350002 China Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 China College of Chemistry & Chemical Engineering Fuzhou University Fuzhou 350002 China

CH4 and CO oxidation reaction on perovskite-like oxides La2-xSrxMO4 (0.0=x=1.0; M = Cu, Ni) was investigated from cyclic voltammetry method, finding that for suprafacial CO oxidation reaction, the catalyst activity has a close correlation to the area of redox peaks measured in the cyclic voltammetry, the larger the peak area is, the higher the activity will be, while for interfacial CH4 oxidation reaction, the activity depends mainly on the difference in redox potentials (?E), and the smaller the difference in redox potentials is, the higher the activity will be.

关键词：甲烷一氧化碳氧化反应电化学法钙钛矿氧化物催化剂

不同剂量阿芬太尼在B超引导下经阴道取卵术中麻醉效果的比较

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妇儿健康导刊 2024年第18期3卷 95-98页

作者：徐雪莲朱志威李波孟庆香山东大学附属生殖医院麻醉科山东济南250001 山东省精神卫生中心麻醉科山东济南250014

目的比较不同剂量阿芬太尼在B超引导下经阴道取卵术中的麻醉效果。方法选取2023年1月1日至11月30日于山东大学附属生殖医院实施B超引导下经阴道取卵术的180例患者作为研究对象,采用抽签法分为N1组、N2组与N3组,每组各60例。三组均静脉... 详细信息

目的比较不同剂量阿芬太尼在B超引导下经阴道取卵术中的麻醉效果。方法选取2023年1月1日至11月30日于山东大学附属生殖医院实施B超引导下经阴道取卵术的180例患者作为研究对象,采用抽签法分为N1组、N2组与N3组,每组各60例。三组均静脉注射阿芬太尼,剂量分别为3、5、7μg/kg,复合环泊酚0.4mg/kg。比较三组血流动力学指标、环泊酚总用量、术中肢体活动及呼吸抑制发生情况、苏醒时间、术后30min疼痛评分、术后不良反应发生情况。结果N3组术中心率、血氧饱和度(SpO_(2))、平均动脉压均较N1组低,术中SpO_(2)较N2组低,差异有统计学意义(P0.05)。N2组、N3组数字分级评分法评分低于N1组,差异有统计学意义(P<0.05)。三组均未见明显不良反应。结论5μg/kg阿芬太尼具有良好的镇痛效果,环泊酚用量较少,患者术中肢体活动及呼吸抑制发生率低,较其他剂量更适合应用于B超引导下经阴道取卵术。

关键词：阿芬太尼 B超引导下经阴道取卵术麻醉效果环泊酚

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2016—2020年格尔木市气温和降水日变化特征

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青海环境 2024年第1期34卷 28-33页

作者：许学莲冶云娟李向涛李淑萍李纳新王永福青海省格尔木市气象局青海格尔木816099

利用2016—2020年格尔木国家基准气候站逐小时气温和降水资料,分析了格尔木市年和四季气温及降水日变化特征。结果表明:(1)格尔木市气温日变化趋势呈“单峰单谷型”,08∶00—17∶00h为气温上升阶段,18∶00—次日07∶00h为气温下降阶段... 详细信息

利用2016—2020年格尔木国家基准气候站逐小时气温和降水资料,分析了格尔木市年和四季气温及降水日变化特征。结果表明:(1)格尔木市气温日变化趋势呈“单峰单谷型”,08∶00—17∶00h为气温上升阶段,18∶00—次日07∶00h为气温下降阶段。春季和夏季08∶00—17∶00h为气温上升阶段,18∶00—次日07∶00h为气温下降阶段;秋季09∶00—16∶00h为气温上升阶段,17∶00—次日08∶00h为气温下降阶段;冬季10∶00—17∶00h为气温上升阶段,18∶00—次日09∶00h为气温下降阶段。1h、3h和6h最大正变温出现在8∶00—11∶00h,负变温出现在17∶00—20∶00h。(2)年和四季最高气温出现时次在16∶00—17∶00h,出现概率在30.4%~46.5%之间,最低气温出现时次在07∶00—08∶00h,出现概率在28.9%~37.2%之间。(3)降水量高值时段集中在0∶00—12∶00h,5∶00h出现最大降水量(25.7mm),低值时段集中在13∶00—23∶00h,21∶00h出现最小降水量(3.1mm);四季降水量高值时段出现时间略有差异。(4)年和夏季累计降水频次的高值时段主要出现在21∶00—次日11∶00h;春、秋、冬季傍晚至次日清晨为低值时段,高值时段主要出现在08∶00—12∶00h。

关键词：气温降水日变化特征降水频次格尔木市

Current progress in glass-based nanochannels

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International Journal of Smart and Nano Materials 2024年第1期15卷 222-237页

作者： Yixin Ling xuelian Yang Lei Zhou Zhenkang Lei Yaqi Hou xu Hou state Key Laboratory of Physical Chemistry of Solid Surfaces and Department of ChemistryCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamenChina Institute of Flexible Electronics(IFE Future Technologies)Xiamen UniversityXiamenChina Institute of Artificial Intelligence Xiamen UniversityXiamenChina Department of Physics Research Institute for Biomimetics and Soft MatterFujian Provincial Key Laboratory for Soft Materials ResearchJiujiang Research InstituteCollege of Physical Science and TechnologyXiamen UniversityXiamenChina

Glass-based nanochannels have become powerful tools for chemi-cal and biological sensing due to their advantages of easy prepara-tion,flexible modification,and high ***,research on ion transport behaviors in glass-based nanochannels and their applications in nanofluidic iontronics has gradually become a focus,including various ion transport behaviors such as resistive-pulse,ion rectification,ionic current memory,*** this review,we summarize the progress of manufacturing methods for glass-based nanochannels and discuss several typical ion transport behaviors of glass-based nanochannels,as well as the main application scenarios of glass-based nanochannels in terms of biosensing,detection,and neuromorphic *** enormous assistance of artificial intel-ligence in the standardized manufacturing process of glass-based nanochannels was anticipated,and the potential development of glass-based nanochannels in achieving neuromorphic functions was expected.

关键词： Glass-based nanochannels biosensing ionic rectification ionic memristive effect nanofluidic neuromorphic functions

Molecular genetic analysis of Dongzhou-period ancient human of Helingeer in Inner Mongolia,China

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Frontiers in Biology 2008年第1期3卷 9-12页

作者： Yuqin FU Chengzhi XIE Han ZHAO xuelian xu Yinqiu CUI Quanchao ZHANG Hui ZHOU Hong ZHU Ancient DNA Laboratory Research Center for Chinese Frontier ArchaeologyJilin UniversityChangchun 130012China College of Life Science Jilin UniversityChangchun 130023China College of Life Science Jilin Agricultural UniversityChangchun 130118China

The mtDNA hypervariable region I(HVR-I)of 10 ancient individuals from Dongzhou-period ancient human populations in Helingeer county of Inner Mongolia were amplified and sequenced to investigate the genetic *** relationships between the ancient population and related extant populations,as well as its possible origin at the molecular level,were also ***,phylogenetic analysis and multi-dimensional scaling analysis were also performed based on the mtDNA data of the ancient population in Helingeer and the related Eurasian *** results showed that the ancient population in Helingeer were closer to the northern Asian populations than to the other compared populations in matrilineal *** the research results of archaeology and anthropology as well as molecular biology,we inferred that they were nomads who migrated from Mongolia plateau and cis-Baikal region to Helingeer in Inner Mongolia,China.

关键词： ancient DNA mtDNA genetic structure phylogenetic analysis

核电新燃料运输容器聚氨酯泡沫填充材料寿命预测

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工程塑料应用 2024年第2期52卷 130-135页

作者：李荣博邵长磊张振雨刘晓强程凡沈光耀龚嶷沈勇坚帅明坤石秀强徐雪莲上海核工程研究设计院股份有限公司上海200233 四川大学成都610065 上海交通大学上海200240 复旦大学材料科学系上海200433

核电新燃料运输容器长期服役寿命主要受限于填充在壳体中起防震和隔热作用且不可更换的硬质聚氨酯泡沫材料。为评估填充在新燃料运输容器中的硬质聚氨酯泡沫材料的老化寿命,分别在不同温度条件下对硬质聚氨酯泡沫材料进行加速热氧老化试... 详细信息

核电新燃料运输容器长期服役寿命主要受限于填充在壳体中起防震和隔热作用且不可更换的硬质聚氨酯泡沫材料。为评估填充在新燃料运输容器中的硬质聚氨酯泡沫材料的老化寿命,分别在不同温度条件下对硬质聚氨酯泡沫材料进行加速热氧老化试验,定期监测其压缩性能、颜色及微观形貌变化规律,分析其热氧老化行为。根据聚氨酯泡沫材料在不同温度下的压缩强度变化规律,获得聚氨酯泡沫材料在不同温度条件下的老化失效时间,采用阿伦尼乌斯方程外推法预测其在实际服役温度条件下的老化寿命。结果表明,聚氨酯泡沫材料适宜的热氧老化试验温度区间为100~120℃。经微观形貌观察,新燃料运输容器聚氨酯泡沫填充材料在热氧老化试验期间发生泡孔塌陷和泡孔壁破裂的现象,导致压缩强度下降。通过计算分析,在新燃料运输容器设计最高使用温度38℃条件下,预测聚氨酯泡沫材料服役寿命为54 a,能够满足30 a的设计要求。

关键词：核燃料运输容器硬质聚氨酯泡沫压缩强度寿命预测