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参与式学习在社区教育教师培训中的应用探究——以“家庭教育指导师资能力提升”培训项目为例

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科教文汇 2024年第4期 175-178页

作者：邬尔娜万建国衡阳开放大学湖南衡阳421001

实施社区教育教师培训是促进社区教育教师专业成长的重要途径之一。衡阳开放大学根据本市社区学院的师资队伍培训现状、存在问题与需求的调研情况,依托“家庭教育指导师资能力提升”培训项目,将参与式学习的理念运用到社区教师培训中,... 详细信息

实施社区教育教师培训是促进社区教育教师专业成长的重要途径之一。衡阳开放大学根据本市社区学院的师资队伍培训现状、存在问题与需求的调研情况,依托“家庭教育指导师资能力提升”培训项目,将参与式学习的理念运用到社区教师培训中,以期提升培训成效,满足社区教育教师专业发展诉求,同时拓宽参与式教师培训理论的应用领域。

关键词：参与式学习社区教育教师培训应用

Plasmonic evolution of atomically size-selected Au clusters by electron energy loss spectrum

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National Science Review 2021年第12期8卷 20-28页

作者： Siqi Lu Lin Xie Kang Lai Runkun Chen Lu Cao Kuojuei Hu Xuefeng wang Jinsen Han Xiangang wan jianguo wan Qing Dai Fengqi Song Jiaqing He Jiayu Dai Jianing Chen Zhenlin wang Guanghou wang National Laboratory of Solid State Microstructures Collaborative Innovation Center of Advanced Microstructures and School of PhysicsNanjing University Department of Physics Southern University of Science and Technology Department of Physics National University of Defense Technology Institute of Physics Chinese Academy of Sciences and Beijing National Laboratory for Condensed Matter Physics School of Physical Sciences University of Chinese Academy of Sciences School of Electronic Science and Engineering and Collaborative Innovation Center of Advanced Microstructures Nanjing University Division of Nanophotonics CAS Center for Excellence in Nanoscience National Center for Nanoscience and Technology Songshan Lake Materials Laboratory

The plasmonic response of gold clusters with atom number(N) = 100–70 000 was investigated using scanning transmission electron microscopy-electron energy loss spectroscopy. For decreasing N, the bulk plasmon remains unchanged above N = 887 but then disappears, while the surface plasmon firstly redshifts from 2.4 to 2.3 e V above N = 887 before blueshifting towards 2.6 e V down to N = 300, and finally splitting into three fine features. The surface plasmon’s excitation ratio is found to follow N0.669, which is essentially R2. An atomically precise evolution picture of plasmon physics is thus demonstrated according to three regimes: classical plasmon(N = 887–70 000), quantum confinement corrected plasmon(N = 300–887)and molecule related plasmon(N < 300).

关键词： atomically precise gold cluster plasmonic response electron energy loss spectroscopy full-scale evolution

磁有序CoH_(2)SeO_(4)薄片中的室温铁电性

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Science China Materials 2024年第5期67卷 1654-1660页

作者：陈璐秋余冰沈阳刘逸飞王号南冯光迪朱秋香罗卫东刘俊明万建国赵庆彪田博博褚君浩段纯刚 Key Laboratory of Polar Materials and Devices(MOE) Shanghai Center of Brain-inspired Intelligent Materials and Devicesand Department of ElectronicsEast China Normal UniversityShanghai200241China Zhejiang Lab Hangzhou310000China Laboratory of Solid State Microstructures and Innovation Center of Advanced Microstructures Nanjing UniversityNanjing210093China Key Laboratory of Artificial Structures and Quantum Control School of Physics and AstronomyShanghai Jiao Tong UniversityShanghai200240China School of Chemistry and Environmental Engineering Wuhan Institute of TechnologyWuhan430205China State Key Laboratory of Infrared Physics Shanghai Institute of Technical PhysicsChinese Academy of SciencesShanghai200083China Institute of Optoelectronics Fudan UniversityShanghai200433China Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuan030006China

本文通过第一性原理计算和实验表征证明了二维CoH_(2)SeO_(4)薄膜的磁有序和滑移铁电性.首先,实验结果证实了粉末CoH_(2)SeO_(4)样品的反铁磁序.同时,第一性原理计算表明单层CoH_(2)SeO_(4)具有反铁磁(AFM-I)基态(TN≈75 K),且预测了二... 详细信息

本文通过第一性原理计算和实验表征证明了二维CoH_(2)SeO_(4)薄膜的磁有序和滑移铁电性.首先,实验结果证实了粉末CoH_(2)SeO_(4)样品的反铁磁序.同时,第一性原理计算表明单层CoH_(2)SeO_(4)具有反铁磁(AFM-I)基态(TN≈75 K),且预测了二维CoH_(2)SeO_(4)薄膜具有以不对称的三重势阱态为特征的滑移铁电性,并在实验中测得了180°压电滞回线、可反转铁电畴和二次谐波信号.此外,在基于二维CoH_(2)SeO_(4)薄膜的电容器中获得铁电材料所特有的电滞回线和蝴蝶状的电容曲线.介电温谱测试表明二维CoH_(2)SeO_(4)薄膜的铁电转变温度约为370 ***_(2)SeO_(4)中滑移铁电性和反铁磁性的出现为获得低维多铁材料指出了一条新的途径.

关键词： two-dimensional materials sliding ferroelectricity multiferroic materials

Magnesium fertilizer application increases peanut growth and pod yield under reduced nitrogen application in southern China

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The Crop Journal 2024年第3期12卷 915-926页

作者： Yu Gao Ruier Zeng Suzhe Yao Ying wang jianguo wang Shubo wan Wei Hu Tingting Chen Lei Zhang Guangdong Provincial Key Laboratory of Plant Molecular Breeding College of AgricultureSouth China Agricultural UniversityGuangzhou 510642GuangdongChina Shandong Academy of Agricultural Sciences Jinan 250100ShandongChina College of Agriculture Nanjing Agricultural UniversityNanjing 210095JiangsuChina

This study investigated the effect of magnesium application on peanut growth and yield under two nitrogen(N)application rates in acidic soil in southern *** chlorophyll content,net photosynthetic rate and dry matter accumulation of the N-sensitive cultivar decreased under reduced N treatments,whereas no effect was observed on the relevant indicators in the N-insensitive variety *** application increased the net photosynthetic rate by increasing the expression of genes involved in chlorophyll synthesis and Rubisco activity in the leaves during the pegging stage under 50%N treatment,while no effect on the net photosynthetic rate was observed under the 100%N *** rate of dry matter accumulation at the early growth stage,total dry matter accumulation and pod yield at harvest increased after Mg application under 50%N treatment by increasing the transportation of assimilates from stems and leaves to pods in both peanut varieties,whereas no effect was found under 100%N ***,Mg application increased the NUE under 50%N *** improvement of NUE in either peanut variety was found under 100%N treatment,while Mg application under the 50%N treatment can obtain a higher economic benefit than the 100%N *** acidic soil,application of 307.5 kg ha^(-1)of Mg sulfate fertilizer under 50%reduced nitrogen application is a suitable fertilizer management measure for improving carbon assimilation,NUE and achieve high peanut yields in southern China.

关键词： Peanut Magnesium Yield Reduced nitrogen application rate

General and specialized metabolites in peanut roots regulate arbuscular mycorrhizal symbiosis

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Journal of Integrative Agriculture 2024年第8期23卷 2618-2632页

作者： Li Cui jianguo wang Zhaohui Tang Zheng Zhang Sha Yang Feng Guo Xinguo Li Jingjing Meng Jialei Zhang Yakov Kuzyakov Shubo wan Institute of Crop Germplasm Resources Shandong Academy of Agricultural Sciences/Scientific Observing and Experimental Station of Crop Cultivation in East ChinaMinistry of Agriculture and Rural AffairsJinan 250100China Shandong Academy of Agricultural Sciences Jinan 250100China Department of Soil Science of Temperate Ecosystems Department of Agricultural Soil ScienceUniversity of GöttingenGöttingen 37077Germany Peoples Friendship University of Russia(RUDN University) Miklukho-Maklaya StMoscow 117198Russia Institute of Environmental Sciences Kazan Federal University420049 KazanRussia

Arbuscular mycorrhizae(AM)fungi form symbiotic associations with plant roots,providing nutritional benefits and promoting plant growth and defenses against various *** changes in the roots during AM fungal colonization are key to understanding the development and maintenance of these ***,we investigated metabolic changes in the roots of peanut(Arachis hypogaea L.)plants during the colonization and development of AM symbiosis,and compared them to uncolonized *** primary changes during the initial stage of AM colonization were in the contents and compositions of phenylpropanoid and flavonoid *** compounds function in signaling pathways that regulate recognition,interactions,and pre-colonization between roots and AM *** compounds decreased by 25%when the symbiosis was fully established compared to the initial colonization *** AM symbiosis was established,general metabolism strongly shifted toward the formation of lipids,amino acids,carboxylic acids,and *** compounds increased by 8.5%from the pre-symbiotic stage to well-established ***-phosphatidylcholines,which are signaling compounds,were only present in AM roots,and decreased in content after the symbiosis was *** the initial stage of AM establishment,the content of salicylic acid increased two-fold,whereas jasmonic acid and abscisic acid decreased compared to uncolonized *** jasmonic acid content decreased in roots after the symbiosis was well *** symbiosis was associated with high levels of calcium,magnesium,and D-(+)-mannose,which stimulated seedling ***,specific metabolites that favor the establishment of AM symbiosis were common in the roots,primarily during early colonization,whereas general metabolism was strongly altered when AM symbiosis was *** conclusion,specialized metabolites function as signaling compounds to establish AM *** compounds are no longe

关键词： Arachis hypogaea L. arbuscular mycorrhizae fungi metabolites symbiotic association

我国寒区山岭交通隧道防冻技术综述与研究展望

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隧道建设（中英文） 2021年第7期41卷 1115-1131页

作者：万建国中铁二院工程集团有限责任公司四川成都610031

首先,回顾我国不同时期典型寒区山岭交通隧道的气象条件、建设与运营期冻害现象及防治技术,展现我国寒区山岭交通隧道防冻技术的发展历程;其次,梳理寒区山岭交通隧道冻害发生的影响因素,从现场测试和耦合理论研究2个方面总结目前国内寒... 详细信息

首先,回顾我国不同时期典型寒区山岭交通隧道的气象条件、建设与运营期冻害现象及防治技术,展现我国寒区山岭交通隧道防冻技术的发展历程;其次,梳理寒区山岭交通隧道冻害发生的影响因素,从现场测试和耦合理论研究2个方面总结目前国内寒区山岭交通隧道温度场时空分布规律研究现状,分析列车活塞风和自然风对寒区铁路隧道温度场的不同影响,得出寒区铁路隧道温度场的分布规律;然后,从微观、细观和宏观层面深入论述土体、岩体和混凝土在水冰相变和水分渗透、迁移条件下发生的冻害损伤机制及研究现状,得出冻害防治应遵循减少地下水和控制洞内温度场2大技术原则和采取主动与被动2类冻害防治措施的结论;最后,展望我国寒区山岭交通隧道防冻技术在温度场规律、冻害机制、短周期冻融、防冻材料和清洁能源利用研究等方面的发展方向。

关键词：寒区山岭交通隧道防冻技术发展历程冻害机制研究展望

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鹧鸪山隧道设计和施工中若干问题的处理

现代隧道技术 2005年第2期42卷 40-44页

作者：万建国铁道第二勘察设计院成都610031

鹧鸪山隧道全长4 448m,是我国目前海拔最高的特长公路隧道,具有高海拔、高寒、地质复杂、运营通风困难等特点。文章主要介绍了设计和施工阶段对冻胀冻融、运营通风、复杂地质、变形及坍方等采用的主要工程技术措施。

关键词：公路隧道冻胀冻融运营通风病害处理

A lateral AlGaN/GaN Schottky barrier diode with 0.36-V turn-on voltage and 10-kV breakdown voltage by using double-barrier anode structure

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Chip 2024年第1期3卷 35-42页

作者： Ru Xu Peng Chen Xiancheng Liu jianguo Zhao Tinggang Zhu Dunjun Chen Zili Xie Jiandong Ye Xiangqian Xiu Fayu wan Jianhua Chang Rong Zhang Youdou Zheng The Key Laboratory of Advanced Photonic and Electronic Materials School of Electronic Science and EngineeringNanjing UniversityNanjing 210023China School of Electronic and Information Engineering Nanjing University of Information Science and TechnologyNanjing 210044China Corenergy Semiconductor Incorporation Suzhou 215600China

GaN power electronic devices,such as the lateral AlGaN/GaN Schottky barrier diode(SBD),have received significant attention in recent *** studies have focused on optimizing the breakdown voltage(BV)of the device,with a particular emphasis on achieving ultra-high-voltage(UHV,>10 kV)***,another important question arises:can the device maintain a BV of 10 kV while having a low turn-on voltage(V_(on))?In this study,the fabrication of UHV AlGaN/GaN SBDs was demonstrated on sapphire with a BV exceeding 10 ***,by utilizing a doublebarrier anode(DBA)structure consisting of platinum(Pt)and tantalum(Ta),a remarkably low Von of 0.36 V was *** achievement highlights the great potential of these devices for UHV applications.

关键词： AlGaN/GaN Schottky barrier diode Double-barrier anode Turn-on voltage Ultra-high-voltage

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公路隧道营运通风节能优化设计探讨

现代隧道技术 2019年第S2期56卷 471-477页

作者：万建国彭劲松中铁二院工程集团有限责任公司成都610031

随着我国高速公路建设的快速发展,长大公路隧道(尤其是5 km以上隧道)越来越多,由此带来的隧道通风土建与机电工程投资大、能耗大、运营费用高等问题日益突出,而公路隧道通风节能降耗是一个复杂工程,涉及多个领域,同时也是公路工程可持... 详细信息

随着我国高速公路建设的快速发展,长大公路隧道(尤其是5 km以上隧道)越来越多,由此带来的隧道通风土建与机电工程投资大、能耗大、运营费用高等问题日益突出,而公路隧道通风节能降耗是一个复杂工程,涉及多个领域,同时也是公路工程可持续发展过程中急需解决的问题。文章通过开展通风计算参数取值和通风方式优化讨论,期望从设计源头开始合理控制通风系统规模、减少通风土建和机电工程投资、降低隧道营运费用,达到节约能源的目的。

关键词：公路隧道节能优化参数取值通风方式