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中学开展铸牢中华民族共同体意识教育的实践路向——基于社会共情赋权的视角

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中南民族大学学报（人文社会科学版） 2024年第6期44卷 20-29,181页

作者：苏德陈启元中央民族大学教育学院北京100081

青少年阶段是铸牢中华民族共同体意识教育的关键时期,中学是铸牢中华民族共同体意识教育的核心阵地。基于社会共情赋权视角,探究个体共情、情境理解、社会责任感、技能建构、青少年赋权五个核心要素在中学阶段铸牢中华民族共同体意识教... 详细信息

青少年阶段是铸牢中华民族共同体意识教育的关键时期,中学是铸牢中华民族共同体意识教育的核心阵地。基于社会共情赋权视角,探究个体共情、情境理解、社会责任感、技能建构、青少年赋权五个核心要素在中学阶段铸牢中华民族共同体意识教育中的内在机理。在此基础上,为中学场域中铸牢中华民族共同体意识教育提出具体的实践路径:奠定“知情行”与共的共情基础、打造文化交往与人际融通的共情情境、构筑社会责任共担的家-校-社共情场域、培养青少年全面共情能力、推进以主体性激发为指向的共情行动。

关键词：铸牢中华民族共同体意识教育中学社会共情赋权家校社一体化

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生物质炭粉对水工透水混凝土性能的影响研究

东北水利水电 2024年第8期42卷 38-40页

作者：陈远奇辽宁泽峰水利工程规划设计有限公司辽宁沈阳110000

透水混凝土在水工建设,特别是河道整治工程中具有良好的应用前景,对其进行研究具有重要意义。此次研究利用室内试验的方式,探讨了生物质炭粉对透水混凝土性能的影响,为高性能水工透水混凝土的研究和工程应用提供了支持和借鉴。

关键词：透水混凝土生物质炭粉水利工程

氮添加对我国喀斯特农田和森林生态系统土壤有机碳及其组分影响的Meta分析

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环境科学 2024年第9期45卷 5406-5415页

作者：闫宇鹏张博涵周志东陈远其湖南科技大学地球科学与空间信息工程学院地理环境与双碳研究所湘潭411201 湖南科技大学生命科学与健康学院湘潭411201 中国林业科学研究院森林生态环境与自然保护研究所北京100091

近年来随着人类活动加剧,大气氮(N)沉降持续增加.氮沉降影响生态系统的碳(C)循环,尤其是喀斯特脆弱生态系统.喀斯特生态系统被认为是重要的碳库,为评估N沉降对其C组分的影响,通过收集整理截至2023年3月底已经发表的14篇英文文献,共460... 详细信息

近年来随着人类活动加剧,大气氮(N)沉降持续增加.氮沉降影响生态系统的碳(C)循环,尤其是喀斯特脆弱生态系统.喀斯特生态系统被认为是重要的碳库,为评估N沉降对其C组分的影响,通过收集整理截至2023年3月底已经发表的14篇英文文献,共460组实验数据,利用Meta分析研究方法,分析了不同水平的N添加对喀斯特生态系统土壤有机碳(SOC)及其组分[土壤可溶性有机碳(DOC)、土壤微生物生物量碳(MBC)、颗粒有机碳(POC)和土壤易氧化有机碳(ROC)]的影响.结果表明:①N添加水平[≤50 kg·(hm^(2)·a)^(-1)、50~100 kg·(hm^(2)·a)^(-1)和>100 kg·(hm^(2)·a)^(-1),以N计]影响农田和森林土壤SOC及活性组分含量对N添加的响应.低N和高N添加显著提高了农田土壤SOC含量,中N添加则显著增加森林土壤SOC含量;高N添加增加农田土壤活性碳含量;中、低N增加森林土壤活性碳含量.②不考虑N添加水平时,N添加显著提高农田和森林土壤有机质(SOM)矿化,并增加农田土壤SOC含量;不同活性组分的响应存在差异,农田土壤POC和ROC含量增加,但DOC没有显著变化;森林土壤DOC和POC含量增加,但对MBC无显著影响.③农田和森林土壤SOC及其组分对N添加的响应比(RR)受不同环境因子的影响.在农田系统中,土壤SOC的响应比受年平均气温和土壤pH的影响,DOC响应比则受年平均气温、年均降水量及施N量的影响,POC响应比仅与施N量有关;在森林系统中,年平均气温、年均降水量和土壤pH显著影响土壤SOC的响应比,对DOC、POC和MBC响应比的影响不显著.上述结果表明,N添加有利于喀斯特农田和森林土壤SOC含量的增加,促进其土壤碳汇能力提升,但该效应受施N量的影响.研究结果为预测未来气候变化背景下喀斯特农田和森林生态系统土壤碳汇功能提供了科学依据.

关键词：氮添加喀斯特生态系统碳循环农田土壤森林土壤碳汇

渍水和生物炭对紫花苜蓿幼苗生长和抗氧化酶活性的影响

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草地学报 2024年第4期32卷 1087-1093页

作者：周志东张煜李湘如杨世鉴杨菁谭婧刘莹成陈远其湖南科技大学生命科学与健康学院经济作物遗传改良与综合利用湖南省重点实验室湖南湘潭411201 湖南科技大学地球科学与空间信息工程学院煤炭资源清洁利用与矿山环境保护湖南省重点实验室湖南湘潭411201 湖南科技大学地理环境与双碳研究所湖南湘潭411201

豆科植物作为退化生态系统植被恢复的先锋物种在紫色土区的适应机理尚不清楚。本研究以紫花苜蓿‘三得利’(Medicago sativa L.‘Sanditi’)为研究对象,紫色土为基质,通过温室盆栽实验,进行渍水和生物炭添加(0.5%,质量比)处理,研究植物... 详细信息

豆科植物作为退化生态系统植被恢复的先锋物种在紫色土区的适应机理尚不清楚。本研究以紫花苜蓿‘三得利’(Medicago sativa L.‘Sanditi’)为研究对象,紫色土为基质,通过温室盆栽实验,进行渍水和生物炭添加(0.5%,质量比)处理,研究植物株高、根长、生物量和叶片过氧化氢酶(Catalase,CAT)与过氧化物酶(Peroxidase,POD)活性等。结果表明:渍水处理仅增加植物茎长和全长;生物炭添加处理增加植物株高、地上部分生物量和总生物量,降低植物根茎长度比、根冠比和CAT与POD活性,且上述效应在渍水条件下也同样存在;生物炭添加对CAT活性影响的时间长于POD。综上,紫花苜蓿能适应一定的渍水环境,生物炭可作为紫色土渍水环境的改良剂,并能够促进紫花苜蓿生长与生物量的累积。本研究为紫花苜蓿在南方湿热地区种植与管理提供了案例参考和数据支撑。

关键词：紫花苜蓿水分胁迫生物炭抗氧化酶生物量

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Massic Heat Capacities of Ammonium Penta-and Tetra-molybdates

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Journal of Central South University 2000年第4期12卷 216-218页

作者： YIN Zhou-lan chen qi-yuan ZHANG Ping-min YUE Wei College of Chemistry and Chemical Engineering Central South UniversityChangsha 410083China

Single phases of ammonium penta and tetra molybdates were prepared. The massic heat capacities at normal pre ssure below their decomposition temperatures were measured by drop method. The relationships of the massic heat capacities of ammonium molybdates with those of the decomposition products were also discussed. The results show that the massic heat capacities of ammonium molybdates can be estimated by adding together contributions from their decomposition products, and the less change of chemical bonds, the more accurate of the estimation.

关键词： massic heat capacity ammonium pentamolybdate ammonium tetramolybdate drop method

Separation and Determination of Sulfur with Different Valance in Polysulfide Mixture

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Journal of Central South University 2000年第3期12卷 149-151页

作者： ZHOU Ji-hong chen qi-yuan ZHANG Ping-min YIN Zhou-lan College of Chemistry and Chemical Engineering Central South UniversityChangsha 410083China

A new process of separating sulfur with different valance from polysulfide mixtures was developed. Sulfide, sulfite and sulfur were separated by adding acetic acid in one step. The polysulfide mixture, sulfite solution and sulfur were oxidized to sulfate by hydrogen peroxide. The products were measured by X ray Fluorescence Spectrometer(XRF) using filter method preparative specimen. The measurement needs only one set of standard *** effects of temperature and pH values on the separation were discussed. The results show that the recoveries range from 98.0% to 101.3% of sulfidic sulfur S( II), 97.0% to 103.0% for sulfite S(IV) and 98.4% to 100.4% for polysulfidic sulfur S(0).

关键词： polysulfide separation determination X ray fluorescence spectrum valance

Kinetic study of LiMn2O4 in process of lithium intercalation

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Journal of Central South University of Technology 2005年第Z1期12卷 72-75页

作者： XU Ming-fei LI Xing-hai chen qi-yuan School of Metallurgical Science and Engineering Central South University Changsha 410083China School of Chemistry and Chemical Engineering Central South University Changsha 410083China School of Metallurgical Science and Engineering Central South University Changsha 410083China School of Chemistry and Chemical Engineering Central South University Changsha 410083China

Exchange current density of spinel LiMn2 O4 was studied by linear polarization. The relationship of the kinetic property with the structure of spinel LiMn2 O4 was investigated by studying the effect of the doping and surface coating on the kinetic properties of electrode material. The results show that the exchange current density of spinel LiMn2 O4 electrode increases with the increase of the amount for lithium intercalation at first, and then decreases. The maximal exchange current density appeares at the 80%-90% lithium intercalation. The similar phenomenon was observed on the doped spinel LiMn2 O4 electrode. Doping can enhance the exchange current density of spinel LiMn2 O4 material. However, the degree of the doping effect varies with the doped element varying. Surface coating can also enhance the exchange current density of spinel material, and the increment of value is higher than that of doped ones.

关键词： kinetic exchange current density spinel LiMr2O4 doping surface coating

Hydrogen-rich surface of MoC catalysts for efficient CO_(2) hydrogenation induced by a coupled hydrogen donator

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Nano Research 2024年第8期17卷 7762-7767页

作者： Dong Xu Si-yuan Xia qi-yuan Li Jie-Sheng chen Xin-Hao Li School of Chemistry and Chemical Engineering Frontiers Science Center for Transformative MoleculesShanghai Jiao Tong UniversityShanghai 200240China

Direct CO_(2) hydrogenation offers an important strategy for promoting the global carbon balance,but high thermodynamic and kinetic stability of CO_(2) has restricted its applicability to only a handful of industrial ***,we introduce a proof-of-concept application of the electron-rich Pt surface to promote hydrogen donation for electron-rich MoC particles acting as hydrogen acceptors,thereby constructing hydrogen-rich surface of MoC active ***,the formed hydrogen-rich and electronrich surface could greatly decrease reaction activation energy to boost the efficient CO_(2) hydrogenation into formic acid over the MoC *** optimized MoC@NC/Pt-0.1(NC:nitrogen-doped carbon)catalyst exhibits a high turnover frequency(TOF)value of 1.2 h^(−1) at a lower temperature of 60℃and a TOF of 24.2 h^(−1) under standard reaction conditions widely used in the literature,exceeding 7 times of MoC@NC catalyst and surpassing the benchmark classical non-noble metal active center-based heterogeneous catalyst.

关键词： electron-rich Pt nanoparticles hydrogen donation hydrogen-rich MoC nanoparticles CO_(2) hydrogenation formic acid

Thermal behaviors of deactivation catalysts for synthesizing 2, 3, 5-trimethylhydroquinone

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Journal of Central South University of Technology 2005年第Z1期12卷 65-67页

作者： qiAN Dong SHI Ai-hua chen qi-yuan LIU Zhi-jian School of Chemistry and Chemical Engineering Central South University Changsha 410083 China State Key Laboratory of Powder Metallurgy Central South University Changsha 410083 China Sinopec Changling Catalyst Division Yueyang 414012 China School of Chemistry and Chemical Engineering Central South University Changsha 410083 China School of Chemistry and Chemical Engineering Central South University Changsha 410083 China State Key Laboratory of Powder Metallurgy Central South University Changsha 410083 China

The thermal behaviors of the deposits on supported noble metal catalysts for synthesizing 2, 3, 5-trimethylhydroquinone by DSC were studied. The results show that the supported Pd catalysts have two exothermic peaks at around 312 ℃ and 435 ℃ in the DSC thermograms, respectively, while the supported Pt catalysts have one exothermic peak at approximately 345 ℃. Therefore, it is supposed that the adsorptive states of deposits on supported Pt catalysts and supported Pd catalysts are different, which may be one reason leading to the stability difference between supported Pt catalysts and supported Pd catalysts.

关键词： deposit supported Pd catalysts supported Pt catalysts DSC