173581 research outputs found
Sort by
AIDA directly connects sympathetic innervation to adaptive thermogenesis by UCP1
Full text linkAIDA最早是由林圣彩教授团队首先鉴定和命名的。2007年林圣彩教授团队与孟安明院士团队合作发现AIDA在斑马鱼体轴发育中的功能(Rui, 2007)。2018年，林圣彩教授团队首次发现了AIDA在哺乳动物中的功能，即AIDA介导的内质网降解途径通过降解脂肪合成途径中的关键酶，而限制膳食脂肪在肠道的吸收这一内在抵御肥胖(Luo, 2018)。而本次成果揭示了AIDA在棕色脂肪组织中特定的功能。这些工作将AIDA引入了脂质应激代谢的重要环节，包括脂质吸收和依赖于脂质的产热过程。该论文的共同第一作者为生命科学学院博士生史猛和硕士生黄晓羽，林圣彩教授和林舒勇教授则为共同通讯作者。【Abstract】The sympathetic nervous system–catecholamine–uncoupling protein 1 (UCP1) axis plays an essential role in non-shivering adaptive thermogenesis. However, whether there exists a direct effector that physically connects catecholamine signalling to UCP1 in response to acute cold is unknown. Here we report that outer mitochondrial membrane-located AIDA is phosphorylated at S161 by the catecholamine-activated protein kinase A (PKA). Phosphorylated AIDA translocates to the intermembrane space, where it binds to and activates the uncoupling activity of UCP1 by promoting cysteine oxidation of UCP1.Adipocyte-specific depletion of AIDA abrogates UCP1-dependent thermogenesis, resulting in hypothermia during acute cold exposure. Re-expression of S161A-AIDA, unlike wild-type AIDA, fails to restore the acute cold response in Aida-knockout mice.The PKA–AIDA–UCP1 axis is highly conserved in mammals, including hibernators. Denervation of the sympathetic postganglionic fibres abolishes cold-induced AIDA-dependent thermogenesis. These findings uncover a direct mechanistic link between sympathetic input and UCP1-mediated adaptive thermogenesis.We thank Y. Li, E. Gnaiger, T. Kuwaki, J. R. B. Lighton, E. T. Chouchani and D. Jiang for technical instruction; X. Li and X.-D. Jiang (Core Facility of Biomedical, Xiamen University) for raising the p-S161-AIDA antibody; the Xiamen University Laboratory Animal Center for the mouse in vitro fertilization service and all the other members of S.C.L. laboratory for their technical assistance. This work was supported by grants from the National Key Research and Development Project of China (grant no. 2016YFA0502001) and the National Natural Science Foundation of China (grant nos 31822027, 31871168, 31690101, 91854208 and 82088102), the Fundamental Research Funds for the Central Universities (grant nos 20720190084 and 20720200069), Project ‘111’ sponsored by the State Bureau of Foreign Experts and Ministry of Education of China (grant no. BP2018017), the Youth Innovation Fund of Xiamen (grant no. 3502Z20206028), the Natural Science Foundation of Fujian Province of China (grant no. 2017J01364) and XMU Training Program of Innovation and Entrepreneurship for Undergraduates (grant no. 2019×0666).
该工作得到了厦门大学实验动物中心和生物医学学部仪器平台的重要协助和国家重点研究和发展项目，国家自然科学基金，厦门大学校长基金等的支持
Sulfur vacancy-rich MoS2 as a catalyst for the hydrogenation of CO2 to methanol
No full text近日，能源材料化学协同创新中心（iChEM）邓德会研究员团队与化学化工学院王野教授团队合作在二氧化碳（CO2）催化加氢制甲醇研究中取得重要突破，首次利用富含硫空位的少层二硫化钼（MoS2）实现了低温、高效、长寿命催化CO2加氢制甲醇，其活性与选择性均显著优于商品Cu/ZnO/Al2O3催化剂，并显示了优异的稳定性。该催化剂为实现低能耗、高效率的CO2转化利用开辟了新途径。
能源材料化学协同创新中心（iChEM）2016级博士生胡景庭和中科院大连化物所于良副研究员为论文的共同第一作者【Abstract】Low-temperature hydrogenation of CO2 to methanol is of great significance for the recycling of this greenhouse gas to valuable products, however, remains a great challenge due to the trade-off between catalytic activity and selectivity. Herein, we report that sulphur vacancies on MoS2 nanosheets can directly dissociate CO2 to surface bound CO and O at room temperature, thus enabling an excellent low-temperature hydrogenation of CO2 to methanol. Multiple in-situ spectroscopic and microscopic characterizations combined with theoretical calculations demonstrate that in-plane sulphur vacancies drive the selective hydrogenation of CO2 to methanol by inhibiting deep hydrogenolysis to methane, while edge vacancies facilitate excessive hydrogenation to methane. At 180℃, the catalyst achieves a 94.3% methanol selectivity at a CO2 conversion of 12.5% over the in-plane sulphur vacancies-rich MoS2 nanosheets, which significantly surpasses those of previously reported catalysts. This catalyst exhibits a high stability for over 3000 hours without any deactivation, rendering it a promising candidate for industrial application.We acknowledge the financial support from the Ministry of Science and Technology of China (Nos. 2016YFA0204100, 2016YFA0200200, 2017YFA0402800 and 2017YFB0602201), the National Natural Science Foundation of China (Nos. 21890753, 21988101, 91545203 and 21433008), the Key Research Program of Frontier Sciences of the Chinese Academy of Sciences (No. QYZDB-SSW-JSC020), the Strategic Priority Research Program of the Chinese Academy of Sciences (No. XDB36030200) and the DNL Cooperation Fund, CAS (No. DNL180201). We thank the staff at the BL14W1 beamline of the Shanghai Synchrotron Radiation Facilities for assistance with the EXAFS and XANES measurements. We also thank H. Su for assistance in the DFT calculations.
工作得到国家重点研发计划（批准号：2016YFA0204100、2016YFA0200200、2017YFA0402800、2017YFB0602201）、国家自然科学基金（批准号：21890753、21988101、91545203、21433008）、中国科学院战略性先导科技专项（B类）、能源材料化学协同创新中心（iChEM）等的资助
The Impact of the Follow-up Audit of the Administrative Approval Reform on Enterprise Investment Efficiency
No full text王光远，厦门大学管理学院教授、博士生导师，管理学博士；郑晓宇，厦门大学管理学院博士研究生。【中文摘要】国家审计需要在全面深化改革和转变政府职能过程中发挥作用,跟踪审计制度有助于实现这一目标。以2013—2018年中国A股上市公司为研究对象,分析行政审批改革跟踪审计的治理效果,实证结果表明,跟踪审计治理后地区的企业，其投资效率提高程度显著大于其他地区的企业。进一步研究表明,跟踪审计能够通过降低企业寻租成本和环境不确定性来缓解企业投资偏离问题;跟踪审计对企业投资效率的改善作用仅显著体现在非国有企业和位于法治环境更好地区的企业。研究结果对国家审计服务国家治理、促进地方经济发展具有一定的现实指导意义。
【Abstract】National auditing should play a role in the process of comprehensively deepening reforms and transforming government functions，and the follow-up audit system can help achieve this goal. Taking China's A-share listed compa¬nies from 2013 to 2018 as the research object，this paper analyzes the governance effect of the follow-up audit of the administrative approval reform. The empirical results show that the improvement of investment efficiency of the enterprises in the areas after the follow-up audit governance is significantly greater than that of the enterprises in the non-problematic areas. Further research shows that follow-up auditing can alleviate the problem of inefficient investment by enterprises by reducing rent-seeking costs and environmental uncertainty，and that the effect of follow-up auditing on the improvement of corporate investment efficiency is only significantly reflected in non - state - owned enterprises and areas with a better legal environment.The research results have considerable practical guiding significance for the national audit to serve national governance and promote local economic development
Preparation of CoO/RGO@Ni Foam Electrode and Its Electrocatalytic Reduction of CO2
No full text本文以氧化石墨烯包覆泡沫镍电极(GO@NF)作为基底,采用水热法在GO@NF基底上原位生长CoO纳米花,同时GO在水热过程中被同步热还原为还原氧化石墨烯(RGO),从而一步制得还原氧化石墨烯包覆泡沫镍负载CoO纳米花电极(CoO/RGO@NF)。使用XRD和SEM对CoO/RGO@NF电极进行表征,发现CoO纳米花均匀生长在泡沫镍三维网络结构上,CoO纳米花为大量针状纳米棒围绕一个中心而成的花状结构,纳米棒的长度约为10 ~ 15 μm,直径约为100 ~ 200 nm。使用循环伏安和线性扫描法测试了CoO/RGO@NF电极电催化CO2的还原性能,在-0.76 V（vs. SHE）电位下,CoO/RGO@NF电极电催化CO2还原的电流效率达到70.9%,产甲酸法拉第效率达到65.2%,甲酸产率为59.8 μmol·h-1·cm-2,且电极可持续稳定电催化还原CO2 4 h,表明CoO/RGO@NF电极对CO2电还原有着优良的催化活性、选择性和稳定性。The worldwide extensive release of carbon dioxide (CO2) has caused serious environmental pollution and unprecedented climate change problems. Thus, for the sustainable development of human society, it is very necessary to convert CO2 to renewable fuels through clean and economical processes. The electrochemical CO2 reduction reaction (CO2RR) is regarded as a promising approach for the recycling of carbon resource and the generation of sustainable fuels. However, the slow kinetics and formation of multiple products in CO2RR hinder its large-scale application. Hence, great research efforts are made to develop electrocatalysts with high product selectivity at low overpotential. Recently, nanostructured transition metal oxide based electrocatalysts have displayed quite exciting performances for the CO2RR, in terms of fast kinetics, selectivity and durability. Among the various metal oxides, cobalt oxides show high CO2RR activity, and selective for the formation of formic acid. In this paper, a hybrid of CoO nanoflowers grown onto three-dimensional (3D) reduced graphene oxide (RGO)@Ni foam (CoO/RGO@NF) was synthesized by a facile hydrothermal method. The composite electrode of CoO/RGO@NF was characterized by XRD and SEM. It is found that the CoO nanoflowers grew uniformly on the 3D network of RGO@NF electrode. The CoO nanoflowers were formed by a large number of nanorods around a center. The length of the nanorods was about 10 ~ 15 μm, and the diameter was about 100 ~ 200 nm. The electrocatalytic performance of CoO/RGO@NF composite electrode for CO2 reduction was studied by cyclic voltammetry and linear scanning voltammetry. The results showed that the current efficiency of CoO/RGO@NF electrode for electrocatalytic reduction of CO2 was 70.9% and the Faraday efficiency for formic acid production was 65.2%. In addition, the yield of formic acid on the electrode was 59.8 μmol·h-1·cm-2 at -0.76 V(vs. SHE) after 4 h of electrolysis. Furthermore, the current density was stable at about 90%. These data indicated that the as-prepared CoO/RGO@NF composite electrode had achieved excellent catalytic activity, selectivity and stability for CO2 electroreduction.江苏省大学生创新训练项目;江苏省科技厅面上项目(BK20181485);连云港市“521”项目(LYG52105-2018038);“江苏省高校一流本科专业建设项目”;“江苏省重点学科建设项目”;江苏省高校优势学科建设工程资助项目通讯作者:王明艳E-mail:[email protected]:Ming-YanWangE-mail:[email protected]江苏海洋大学环境与化学工程学院,江苏 连云港 222005College of Environment and Chemical Engineering Jiangsu Ocean University, Lianyungang 222005, Jiangsu, Chin
A Comparison in Structural Transformation of Li[NixCoyMnz]O2 (x = 0.6, 0.85) Cathode Materials in Lithium-Ion Batteries
No full text本文主要对高镍三元材料（Li(Ni0.85Co0.1Mn0.05)O2,Ni85）和常规低镍三元材料（Li(Ni0.6Co0.2Mn0.2)O2,Ni60）两种三元材料的相变电压范围进行了划分和测定,以研究两种材料相变规律的区别,并进一步分析得出高镍材料在充电过程中的结构稳定性相对较弱的原因。本文主要采用了XRD、dQ·dV-1以及SEM的表征方式对两种材料的相变、结构变化及颗粒表面的形貌进行分析。并得出以下结论,高镍正极在3.0 V ~ 4.2 V范围内充电时经历了H1→M→H2→H3的三次相变过程,最终产物为H3相。而传统Ni60材料在相同电压范围内只经历了H1→M的相变过程,当过充至4.550 V时,Ni60材料可达到H2相,继续过充至5.000 V后,可完成H3相的转变。因此,高镍正极材料在正常充电电压范围内即完成了H3相的相转变过程,其较低的相变电压阈值是其结构稳定性较差的原因。In this paper, the phase transformation voltage ranges of two layered oxide ternary cathode materials, namely, Li(Ni0.85Co0.10Mn0.05)O2 (referred to Ni85, presenting high Ni content) and Li(Ni0.6Co0.2Mn0.2)O2 (referred to Ni60, presenting common low Ni content), were classified and determined. The structural differences between high Ni and common low Ni ternary materials were studied in order to understand the structure instability of high nickel material during the charging process. At the same time, the differential capacity (dQ·dV-1) curves of Ni85 and Ni60 positive electrodes during the charging process were obtained to characterize phase regions, and the corresponding relationship between the cathode and anode phase transfermations was studied. In addition, the phase transformation and surface morphology of Ni85 and Ni60 materials were analyzed by X-Ray diffraction (XRD) and field emission scanning electron microscopy (SEM). It is concluded that the high Ni positive electrode underwent three phase transformations of H1→M→H2→H3 within the normal charging range of 3.0 V ~ 4.2 V, through which the final product was H3 phase, which is relatively unstable. In the same charging voltage range, the traditional Ni60 material only experienced the phase transition from H1 phase to M phase. When overcharged to 4.550 V, Ni60 material could reach H2 phase, and after overcharging to 5.000 V, H3 phase transformation could be completed. The dQ·dV-1 curve reflects the above phase transformation processes, and the variations of characteristic diffraction peaks can be observed on XRD. The cross section SEM images of fresh and fully charged cathodes showed that, the particle crushing degree of Ni85 material was obviously greater than that of Ni60 material under the full charge state. According to the above experimental results, it can be concluded that the H3 phase transformation could be completed within the normal charging voltage range for Ni85 material. Therefore, the lower phase transformation voltage threshold of high Ni material accounts mainly for the poor structure stability.国家重点研发计划项目(2016YFB0100304)通讯作者:李丽娟E-mail:[email protected]:Li-JuanLiE-mail:[email protected]合肥国轩高科动力能源有限公司,安徽 合肥 230012Hefei Gotion High-Tech Power Energy Co., Ltd. Hefei 230012, Anhui, Chin
Impact of Environmental Regulation on China's Industrial Energy Efficiency:An Empirical study Based on the Data of Micro-enterprises
No full text林伯强，厦门大学管理学院中国能源政策研究院教授、博士生导师，长江学者特聘教授，经济学博士；王喜枝,厦门大学管理学院中国能源政策研究院研究助理；杜之利，厦门大学管理学院中国能源政策研究院助理教授，经济学博士。【中文摘要】中国工业发展初期沿用高能耗、高排放、低效率的粗放型经济模式造成一系列环境问题,提高能源效率是解决当前环境污染与能源短缺双重困境、实现碳达峰与碳中和的必然选择。环境污染的负外部性催生了政府环境规制。现有理论分析表明，环境规制通过成本效应和技术创新作用于能源效率，但相关研究多集中于考察地区特征对能源效率的影口向,可宏观数据往往会忽略企业异质性的影响。基于2003—2011年中国工业企业能源环境数据，可考察环境规制对企业能源效率的影响及传导机制。研究结果表明：中国工业能源效率存在发展不平衡现象。环境规制通过增加污染末端治理成本和倒逼技术创新对工业能源效率产生正向影响。同时,环境规制对能源效率的影响存在异质1性：由于存在污染避难所效应，环境规制对重度污染企业的能源效率影响并不明显，并且对高资源禀赋地区的能源效率具有更明显的改善作用。
【Abstract】The extensive economic model with high energy consumption，high emission and low efficiency adopted in the early stage of China's industrial development caused a series of environmental problems. Improving energy efficiency is an inevitable choice to solve the dilemma between energy shortage and environmental pollution and to achieve peak carbon dioxide emissions and carbon neutrality. The negative externality of environmental pollution has given birth to government environmental regulation. The existing theoretical analysis shows that environmental regulation can affect energy efficiency through cost effect and technological innovation，but it only focuses on the impact of regional characteristics on energy efficiency by using macro data which neglects the impact of enterprise heterogeneity. Based on the energy and environmental data of Chinese industrial enterprises from 2003 to 2011，the impact of environmental regulation on enterprise energy efficiency and its transmission mechanism was investigated. The results show that there is an imbalance of industrial energy efficiency in China. Environmental regulation can positively afect Chinese industrial energy efficiency by increasing the cost of environment pollution end treatment and driving technological innovation. The impact of environmental regulation on energy efficiency is heterogeneous. Larger-scale enterprises are more sensitive to environmental regulation. The impact of environmental regulation on energy efficiency of heavily polluting enterprises is not obvious due to the existence of a certain “pollution haven effect”. And it can dramatically improve the energy efficiency in high resource endowment areas.中央高校基本科研业务费专项资金资助项目“汽车能源消费核算指标体系设计”（20720201023
Large-scale and high-resolution mass spectrometry-based proteomics profiling defines molecular subtypes of esophageal cancer for therapeutic targeting
No full text食管癌是我国高发的恶性肿瘤。近十多年来，基因组、转录组层面的研究促进了食管癌分子机制的解析，但与其它癌症类型相比，食管癌基于基因组和转录组数据的分子分型、预后标记物及靶向治疗靶点仍颇为局限。蛋白组学分析能更深层次揭示基因组和转录组无法解密的肿瘤生物学密码，为癌症临床治疗研究开辟新方向。药学院刘文教授课题组和汕头大学医学院李恩民教授、许丽艳研究员课题组从多维组学层面全面揭示了食管癌中失调蛋白、磷酸化修饰位点及相关信号通路，发现了食管癌中具有显著生存差异的两个蛋白质组亚型，预测了针对高风险亚型的药物，并验证了药物的有效性，为指导食管癌患者的治疗决策和药物开发提供了新的思路。Esophageal cancer (EC) is a type of aggressive cancer without clinically relevant molecular subtypes, hindering the development of effective strategies for treatment. To define molecular subtypes of EC, we perform mass spectrometry-based proteomic and phosphoproteomics profiling of EC tumors and adjacent non-tumor tissues, revealing a catalog of proteins and phosphosites that are dysregulated in ECs. The EC cohort is stratified into two molecular subtypes—S1 and S2—based on proteomic analysis, with the S2 subtype characterized by the upregulation of spliceosomal and ribosomal proteins, and being more aggressive. Moreover, we identify a subtype signature composed of ELOA and SCAF4, and construct a subtype diagnostic and prognostic model. Potential drugs are predicted for treating patients of S2 subtype, and three candidate drugs are validated to inhibit EC. Taken together, our proteomic analysis define molecular subtypes of EC, thus providing a potential therapeutic outlook for improving disease outcomes in patients with EC.This work was supported by the Natural Science Foundation of China-Guangdong Joint Fund (U1601229), 2020 Li Ka Shing Foundation Cross-Disciplinary Research Grant (2020LKSFG07B) to E.L., the National Cohort of Esophageal Cancer of China (2016YFC0901400), the National Natural Science Foundation of China (81772532) to Li-Yan Xu, and the Ministry of Science and Technology of the People’s Republic of China (2020YFA0112300), National Natural Science Foundation of China (91953114, 81761128015, 81861130370, 31871319), Fujian Province Health Education Joint Research Project (WKJ2016-2-09), Xiamen Science and Technology Project (2017S0091), and the Fundamental Research Funds for the Central University (20720200002 and 20720190145) to W.L. (Wen Liu), and the Natural Science Foundation of Heilongjiang Province, China (LH2021F048) to W.L. (Wei Liu). We would like to acknowledge Rong Ding, Lei Zhang, Ya-ying Wu, Bao-ying Xie, and Jing-Ru Huang in the mass spectrometry facility of Xiamen University for providing technical assistance.该研究工作得到了科技部国家重点研发计划、国家自然科学基金-广东省联合基金重点项目以及国家自然科学基金面上项目等项目支持
Engineering Na+-layer spacings to stabilize Mnbased layered cathodes for sodium-ion batteries
No full text钠离子电池（NIBs）具有原料储量丰富、成本低廉等优势，更有望应用于大规模储能器件，如静态储能基站和智能电网等。层状过渡金属氧化物（LiTmO2和NaxTmO2）材料目前仍然是锂离子电池（LIBs）和NIBs的主要正极材料，其晶体结构由碱金属(Li+/Na+)层和过渡金属(TmO2)层的有序堆叠组成。然而，LiTmO2和NaxTmO2材料在充放电过程中，Li+/Na+的嵌入和脱出会引起结构相变，导致电极材料容量快速衰退。杨勇课题组提出了一种简单而有效的水介导改性策略，即在Na0.67MnO2材料的Na+层中插入水分子，再通过高温脱水获得页岩状钠氧化物。该策略有效地扩大了P2型Na0.67MnO2的Na+层间距，并将颗粒转变为页岩状形态。课题组在钠离子电池层状氧化物正极材料构效关系的研究中取得重要进展。该研究工作得到美国国家强磁场实验室傅日强教授、厦门大学王鸣生教授（共同通讯）以及吴顺情教授的支持和帮助。论文第一作者为化学化工学院2017级博士研究生左文华（已毕业）。Layered transition metal oxides are the most important cathode materials for Li/Na/K ion batteries. Suppressing undesirable phase transformations during charge-discharge processes is a critical and fundamental challenge towards the rational design of high-performance layered oxide cathodes. Here we report a shale-like NaxMnO2 (S-NMO) electrode that is derived from a simple but effective water-mediated strategy. This strategy expands the Na+
layer spacings of P2-type Na0.67MnO2 and transforms the particles into accordion-like morphology. Therefore, the S-NMO electrode exhibits improved Na+ mobility and near-zerostrain property during charge-discharge processes, which leads to outstanding rate capability (100 mAh g−1 at the operation time of 6 min) and cycling stability (>3000 cycles). In addition, the water-mediated strategy is feasible to other layered sodium oxides and the
obtained S-NMO electrode has an excellent tolerance to humidity. This work demonstrates that engineering the spacings of alkali-metal layer is an effective strategy to stabilize the structure of layered transition metal oxides.This work was financially supported by the National Key Research and Development Program of China (grant nos 2018YFB0905400, 2016YFB0901502), National Natural Science Foundation of China (grant nos 21761132030, 21935009, U1932201), the Fundamental Research Funds for the Central Universities (grant no. 20720200075), and the “Double-First Class” Foundation of Materials and Intelligent Manufacturing Discipline of Xiamen University. The authors thank Dr. Dong Su for the kind help and insightful discussions. W.Z. acknowledges the research fellowship from the Alexander von Humboldt Foundation. G.F.O. acknowledges the financial support from Spanish ministry of science and innovation (project nº MAT2017-84002-C2-1-R). R.F. acknowledges the support from the National High Magnetic Field Laboratory which is supported by NSF Cooperative Agreement DMR-1644779 and the State of Florida. The authors gratefully acknowledge the valuable beamtime from beamline BL14B1 of the SSRF.研究工作得到了国家自然科学基金（21761132030、21935009、 U1932201）和国家重点研发计划（2016YFB0901502）的资助
The Nostalgic Writing of Poetry in the New Century
No full text杨建军，兰州大学文学院教授、博士生导师；赵智行，中山大学中文系（珠海）博士研究生。【中文摘要】新世纪诗歌的乡愁书写，具有“复数”的多面与多变。乡愁书写宏观呈现为“城乡共愁”，中观体现为“地域狂欢”，微观体现为“雅俗交杂”，多种样态的乡愁表达形成了复调争鸣式的“众声喧愁”。乡愁诗歌的“复数”，开启了诗歌个性化的“再度寻根”，可纾解当前人类社会的现代焦虑,可疗愈当代人的身份断裂与认同创伤,为新世纪乡愁诗歌探索新生之路。乡愁诗歌“复数”的记忆铭刻，呼应了“记住乡愁”的时代思潮，从个人记忆、社会记忆、生态记忆等方面体现了新的精神探索。新世纪乡愁诗歌的“复数”，也为海内外华语诗歌跨域对话提供了可能,乡愁是华语文学场域内的一种共识性情感。相较于台湾地区文学和海外华语文学，中国大陆的乡愁诗歌书写能够重启风尚推动对话，通过诗人诗作间的跨域交流，形成海内外诗人间乡愁书写的相互照亮，进而 助力华语诗歌乡愁书写走向彼此成就。
【Abstract】The nostalgic writing of poetry has “plural”facets and changes in the new century，manifested macroscopi-
cally as “shared urban-rural nostalgia”，mesoscopically as “region-specific carnival”，and microscopically as a “hybrid of the refined and the popular”. The “plural” significances of nostalgia opens up new，personalized root-searching in poetry. It can relieve the modern anxiety of current human society，heal the identity fracture and identity trauma of contemporary people，and carve out a new path for nostalgic poetry in the new century- The “plural” engraved memories in nostalgic poetry echo the Zeitgeist of “remembering nostalgia”，and reflects a new spirit of exploration in personal，social and ecological memories. The “plurality” of nostalgic poetry in the new century also provides the possibility for cross-domain dialogue between Chinese poetry at home and abroad. Nostalgia is a consensus emotion in the field of Chinese literature. Nostalgic poetry writing in the Chinese Mainland can restart fashion and promote dialogue. In the cross-regional exchanges of poets and poems，the nostalgic writing of poets at home and abroad can be mutually illuminated，which is also conducive to the common prosperity of the nostalgic writing of Chinese poetry