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在户外体育游戏中发展幼儿情绪表达与沟通能力

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福建教育学院学报 2024年第2期25卷 93-95页

作者：王雅瑜南安市教师进修学校福建南安362300

良好的情绪表达与沟通能力有助于幼儿的心理健康成长和社会适应能力。当前户外体育游戏中,幼儿情绪表达与沟通能力发展存在的问题包括幼儿对情绪的认识不足、情绪表达能力不足、游戏材料单一等。教师应积极引导幼儿之间的合作,鼓励幼儿... 详细信息

良好的情绪表达与沟通能力有助于幼儿的心理健康成长和社会适应能力。当前户外体育游戏中,幼儿情绪表达与沟通能力发展存在的问题包括幼儿对情绪的认识不足、情绪表达能力不足、游戏材料单一等。教师应积极引导幼儿之间的合作,鼓励幼儿积极交流,运用多种方式引导幼儿正确地表达自己的情绪,开展丰富多样的户外体育游戏,帮助幼儿掌握正确的沟通技巧。另外,教师应重视游戏规则的制定,为幼儿创设良好的游戏环境,利用游戏引导幼儿交流。

关键词：户外体育游戏情绪表达沟通能力

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不同年份柑普茶的微生物群落差异

亚热带植物科学 2024年第3期53卷 191-200页

作者：洪培玉王亚玉吴鸿华南农业大学药用植物研究中心广东广州510642 深圳华大生命科学研究院广东深圳518083 华南农业大学生命科学学院广东广州510642

柑普茶是由新鲜的茶枝柑Citrus reticulata'Chachiensis'果实挖去果肉,将云南普洱茶填入其中所制成的,既有广陈皮的香味又有普洱茶香气。本研究针对不同陈化时间的柑普茶,将柑普茶的茶叶和果皮分别进行研究,发现果皮与茶叶的微生物组成... 详细信息

柑普茶是由新鲜的茶枝柑Citrus reticulata'Chachiensis'果实挖去果肉,将云南普洱茶填入其中所制成的,既有广陈皮的香味又有普洱茶香气。本研究针对不同陈化时间的柑普茶,将柑普茶的茶叶和果皮分别进行研究,发现果皮与茶叶的微生物组成在陈化早期较相似,而随着陈化时间的延长其物种组成差异越显著。在不同陈化时间的柑普茶茶叶中,其优势菌属有芽孢杆菌属Bacillus、葡萄球菌属Staphylococcus和芽生葡萄孢酵母菌属Blastobotrys等。而在不同陈化时间的柑普茶果皮中,陈化0~1年的优势细菌有葡萄球菌属等,其余三个陈化时间的优势细菌是不动杆菌属Acinetobacter等。在真菌群落中,陈化0、1、5年的果皮以及五个不同陈化时间的柑普茶茶叶的优势菌属均为芽生葡萄孢酵母菌属,陈化7年和9年的柑普茶果皮的优势真菌为耐干霉菌属Xeromyces。在柑普茶茶叶或果皮中,不同陈化时间共有的ASV丰度占绝大多数样本丰度的75%以上,对共有ASV进行相关性分析发现,曲霉属Aspergillus在关系网中与其他微生物呈显著正相关,但在不同陈化时间的柑普茶中其丰度并不高。

关键词：柑普茶扩增子微生物

One more step to realistic CO_(2) reduction reactions——geometric structures evolutions at gas-solid interface

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Rare Metals 2024年第2期43卷 849-852页

作者： ya-Qiang Xie Xin yu Ting wang College of the Environment and Ecology Xiamen UniversityXiamen361102China

A rational design of copper(Cu)nanocatalyst is critical to the efficient carbon dioxide(CO_(2))conversion toward C1/C2 chemical ***,the lack of actual information on the vicinal Cu interfaces hinders the intrinsic activitystructure correlation *** with atomic-scale in situ characterizations(AP-STM and synchrotron-based AP-XPS),Park and co-workers study and identify the adsorbate-driven morphological evolution of Cu nanoclusters on the Cu(997)surface,providing real-space evidence for the critical role of vicinal structures on Cu *** observed surface roughening trends caused by dissociated atomic oxygen and CO adsorbates subsequently affect the result of successive catalytic reactions to produce critical intermediates,such as carbonate and formate,during the CO_(2)reduction reaction.

关键词： reaction critical rational

The Assessment and Utilization of Straw Resources in China

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Agricultural Sciences in China 2010年第12期9卷 1807-1815页

作者： wang ya-jing, BI yu-yun and GAO Chun-yu Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R.China Institute of Agricultural Resources and Regional Planning Chinese Academy of Agricultural Sciences Beijing 100081 P.R.China

The study was undertaken to evaluate the collectable and usable volume of existing straw resources, its suitability for different ways of utilization and fully reorganization of its development potential in China. Based on the results on the stubble heights of major crops in the Huang-Huai-Hai area （the area along the Yellow River, Huai River, and Hai River）, the evaluation of the collectable and usable coefficients, and the collectable and usable volumes of various straw resources in China were worked out during 2005. The respective collectable and usable volumes of straw resources were worked out on the basis of suitability as fuel, feed, fertilizer, and base material for edible mushrooms. The total collectable and utilizable quantity of straw in China was 685 950 000 t, and the mean collection coefficient was 0.81 during 2005. The quantity of straw residue and wasted straw accounted for 19%. The collectable and utilizable quantities of grain, cash crop, and other crop straw were 492 310 000, 162 610 000, and 31 030 000 t which accounted for 71.77, 23.71, and 4.52%, respectively of the total collectable and utilizable quantity of straw. The quantity of straw which could be used as fuel was 635 000 000 t, which accounted for 92.63% of total quantity of the straw in the country during 2005. Among the total quantity of collectable and utilizable straw in China during 2005, the quantities of straw suitable and unsuitable for being processed as feedstuff were 587 640 000 and 98 310 000 t, which accounted for 85.67 and 14.33%, respectively. The quantity of straw residue returned to the field and collectable and utilizable straw for direct field restoration was 616 000 000 t, which accounted for about three-fourths of the total straw yield, while the quantity of straw for cultivation of edible mushrooms and industrial processing was about 587 000 000 t, which accounted for more than 85% of the total collectable and utilizable straw. The evaluation results indicate that t

关键词： China straw resources collectable and utilizable quantity suitability assessment

Numerical design of an efficient Ho^(3+)-doped InF3 fiber laser at~3.2μm

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Journal of Electronic Science and Technology 2024年第3期22卷 35-46页

作者： Shi-yuan Zhou Hong-yu Luo ya-Zhou wang Yong Liu State Key Laboratory of Electronic Thin Films and Integrated Devices School of Optoelectronic Science and EngineeringUniversity of Electronic Science and Technology of ChinaChengdu611731China DTU Electro Technical University of DenmarkKongens Lyngby2800Denmark

In this work,we theoretically unlock the potential of Ho^(3+)-doped InF3 fiber for efficient~3.2μm laser generation(from the 5F4,5S2→5F5 transition),by employing a novel dual-wavelength pumping scheme at 1150 nm and 980 nm,for the first *** clad-coupled 1150 nm pumping of 5 W,~3.2μm power of 3.6 W has been predicted with the optical-to-optical efficiency of 14.4%.Further efficient power scaling,however,is blocked by the output saturation with 980 nm *** alleviate this behavior,the cascaded 5I5→5I6 transition,targeting~3.9μm,has been activated simultaneously,therefore accelerating the population circulation between the laser upper level 5F4,5S2 and long-lived 5I6 level under 980 nm *** a result,enhanced~3.2μm power of 4.68 W has been obtained with optical-to-optical efficiency of 15.6%.Meanwhile the~3.9μm laser,yielding power of 2.76 W with optical-to-optical efficiency of 9.2%,is theoretically achievable as well with a moderate heat load,of which the performance is even better than the prior experimentally and theoretically reported Ho^(3+)-doped InF3 fiber lasers emitting at~3.9μm *** work demonstrates a versatile platform for laser generation at~3.2μm and~3.9μm,thus providing the new opportunities for many potential applications,e.g.,polymer processing,infrared countermeasures,and free-space communications.

关键词： Cascaded Fiber laser Holmium Mid-infrared

Hydrazone derivatives in agrochemical discovery and development

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Chinese Chemical Letters 2024年第3期35卷 104-113页

作者： ya wang Shengxin Guo Lijiao yu Wei Zhang Zhenchao wang Yonggui Robin Chi Jian Wu National Key Laboratory of Green Pesticide Key Laboratory of Green Pesticide and Agricultural BioengineeringMinistry of EducationGuizhou UniversityHuaxi DistrictGuiyang 550025China Division of Chemistry&Biological Chemistry School of Physical&Mathematical SciencesNanyang Technological UniversitySingapore 637371Singapore

As a common active substructure,hydrazone has attracted increasing attention and is considered essential for pesticide *** has been widely regarded as a potential insecticidal,antibacterial,antifungal,antiviral,and herbicidal *** this review,we highlight the pesticide versatility of hydrazone fragments and provide a comprehensive summary of the biological activity,structure-activity relationship analysis(SARs),and primary mechanism of their *** profile is expected to give valuable information for discovering new pesticides.

关键词： Hydrazone Agrochemicals Biological activity Structure-activity relationship Preliminary mechanism

Morphology and valence state evolution of Cu:Unraveling the impact on nitric oxide electroreduction

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Journal of Energy Chemistry 2024年第4期91卷 276-286页

作者： Ting Sun Fengyu Gao ya wang Honghong Yi Qingjun yu Shunzheng Zhao Xiaolong Tang School of Energy and Environmental Engineering University of Science and Technology BeijingBeijing 100083China

Ammonia(NH3)serves as a critical component in the fertilizer industry and fume gas ***,the conventional NH3production process,namely the Haber-Bosch process,leads to considerable energy consumption and waste gas *** address this,electrocatalytic nitric oxide reduction reaction(NORR)has emerged as a promising strategy to bridge NH3consumption to NH3production,harnessing renewable electricity for a sustainable ***(Cu)stands out as a prominent electrocatalyst for NO reduction,given its exceptional NH3yield and ***,a crucial aspect that remains insufficiently explored is the effects of morphology and valence states of Cu on the NORR *** this investigation,we synthesized CuO nanowires(CuO-NF)and Cu nanocubes(Cu-NF)as cathodes through an in situ growth ***,CuO-NF exhibited an impressive NH3yield of 0.50±0.02 mg cm^(-2)h^(-1)at-0.6 V *** hydrogen electrode(RHE)with faradaic efficiency of29,68%±1,35%,surpassing that of Cu-NF(0.17±0.01 mg cm^(-2)h^(-1),16.18%±1.40%).Throughout the electroreduction process,secondary cubes were generated on the CuO-NF surface,preserving their nanosheet cluster morphology,sustained by an abundant supply of subsurface oxygen(s-O)even after an extended duration of 10 h,until s-O depletion ***,Cu-NF exhibited inadequate s-O content,leading to rapid crystal collapse within the same *** distinctive current-potential relationship,akin to a volcano-type curve,was attributed to distinct NO hydrogenation *** Tafel analysis revealed the exchange current density(i0)and standard heterogeneous rate constant(k0)for CuO-NF,yielding 3.44×10^(-6)A cm^(-2)and 3.77×10^(-6)cm^(-2)s^(-1)when NORR was driven by *** findings revealed the potential of CuO-NF for NO reduction and provided insights into the intricate interplay between crystal morphology,valence states,and electrochemical performance.

关键词： NORR Ammonia Synthesis Copper Morphology Valence States Mechanism

Linear-Quadratic Pareto Cooperative Game for Mean-Field Backward Stochastic System

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Journal of Systems Science & Complexity 2024年第3期37卷 947-964页

作者： wang yu School of Control Science and Engineering Shandong UniversityJinan 250061China

This paper focuses on a Pareto cooperative differential game with a linear mean-field backward stochastic system and a quadratic form cost functional. Based on a weighted sum optimality method, the Pareto game is equivalently converted to an optimal control problem. In the first place,the feedback form of Pareto optimal strategy is derived by virtue of decoupling technology, which is represented by four Riccati equations, a mean-field forward stochastic differential equation(MF-FSDE),and a mean-field backward stochastic differential equation(MF-BSDE). In addition, the corresponding Pareto optimal solution is further obtained. Finally, the author solves a problem in mathematical finance to illustrate the application of the theoretical results.

关键词： Backward stochastic differential equation linear-quadratic control mean-field Pareto optimality

Deciphering dynamic surface of PtRu alloy nanocatalysts to revisit their synergistic effects during the electrooxidation

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Science China Chemistry 2024年第7期67卷 2224-2233页

作者： Xiao-Chong Li Bo wang Zhou yu Qiang Wan Ju-Fang Zheng Emmanuel Maisonhaute Xiao-Shun Zhou ya-Hao wang Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Institute of Physical ChemistryZhejiang Normal UniversityJinhua 321004China Laboratoire Interface et Systèmes Electrochimiques CNRS UMR 8235Sorbonne UniversitéF-75252 Paris cedex 5France

Correlating dynamic structural transformation of catalysts with the surface intermediate species under operating conditions is critical for updating the understanding of structure–performance ***,we probe the electrochemical potentialdependent surface structures and adsorbed intermediates on PtRu binary alloy nanocatalysts to revisit its synergistic mechanisms for CO electrooxidation enhanced ***-situ spectral characteristics by using modified shell-isolated nanoparticle-enhanced Raman spectroscopy,show that in acidic solution,when the potential is positively scanned from 0.1 V to 1.5 V relative to reversible hydrogen electrode(RHE),the surface of the alloy catalyst evolves from metallic PtRu to adsorbed oxygen gradually covering and accumulating on Ru sites(denoted as PtRuO_(x),x≤2),forming segregated RuO_(2),and finally forming a threedimensional oxide layer(denoted as 3D PtRuO_(4)).Moreover,molecular evidence associated with periodic density functional theory calculations reveals that electronic effects promote ruthenium to become more oxidizable and *** particular,we found here that ^(*)O and ^(*)OH at surface RuO_(x) sites are highly efficient CO oxidation active species in comparison to the same entities adsorbed on metallic Ru *** work sheds light on the complex surface dynamic process of practical Pt-based binary nanocatalysts and improves the understanding of synergistic mechanism for the development of fuel cell devices.

关键词： in-situ Raman spectroscopy surface evolution bifunctional mechanism PtRu electrooxidation