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Journal of Geographical Sciences 2025年第1期 65-87页

作者： CHEN Meng ZHOU Qiuwen peng dawei YAN Weihong School of Geography and Environmental Science Guizhou Normal University Huanjiang Observation and Research Station for Karst Ecosystem Guangxi Key Laboratory of Karst Ecological Processes and Services Institute of Subtropical Agriculture CAS University of Chinese Academy of Sciences Faculty of Geographical Science Beijing Normal University Forestry Bureau of Shibing County

Terrestrial ecosystems heavily depend on vegetation,which responds to carbon dioxide （CO2） fertilization in hot and humid *** subtropical humid karst region is a hot and humid region;whether and to what extent CO2fertilization affects vegetation changes in such regions remains *** this study,we investigated the degree to which CO2fertilization influences vegetation changes,along with their spatial and temporal differences,in the subtropical humid karst region using time-lag effect analysis,a random forest model,and multiple regression *** showed that CO2fertilization plays an important role in vegetation changes,exhibiting clear spatial variations across different geomorphological zones,with its degree of influence ranging mainly between 11%and 25%.The highest contribution of CO2fertilization was observed in the karst basin and non-karstic region,whereas the lowest contribution was found in the karst plateau *** studies have primarily attributed vegetation changes in subtropical humid karst region to ecological engineering,leading to an overestimation of its contribution to these *** findings of this study enhance the understanding of the mechanism of vegetation changes in humid karst region and provide theoretical and practical insights for ecological and environmental protection in these regions.

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Vegetation dynamics and its response to driving factors in typical karst regions,Guizhou Province,China

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Frontiers of Earth Science 2021年第1期15卷 167-183页

作者： Xiaocha WEI Qiuwen ZHOU Ya LUO Mingyong CAI Xu ZHOU Weihong YAN dawei peng Ji ZHANG School of Geography and Environmental Science Guizhou Normal UniversityGuiyang 550025China Satellite Environment Center of MEP Beijing 100094China

Analyzing the vegetation dynamics and its response to driving factors provides a vital reference for understanding regional ecological processes and ecosystem ***,this issue has been poorly understood in karst *** Guizhou Province as a case study,based on the Normalized-Difference Vegetation Index of the Global Inventory Modeling and Mapping Studies and on meteorological data sets during 1982-2015,we evaluated vegetation dynamics and its response to climatic factors and human *** used several methods:the Mann-Kendall test,rescaled range analysis,partial correlation analysis,and residual *** results are as follows:1)the mean annual Normalized-Difference Vegetation Index was 0.46 and exhibited a significant increasing trend with a variation rate of 0.01/10a during 1982-2015 in Guizhou *** vegetation cover showed was spatially heterogeneous:High vegetation cover was distributed mainly in the center and western margin of the study area,while the other parts of the study area mainly distributed with low vegetation cover,although the vegetation cover was higher in the nonkarst areas than in the karst areas;2)in general,the climate was getting warmer and drier in Guizhou Province during *** cover was positively correlated with temperature and negatively correlated with *** to precipitation,temperature was the dominant climatic factor impacting vegetation dynamics;3)'large-scale ecological restoration projects have obviously increased vegetation cover in Guizhou Province in recent *** contribution of human activities to vegetation changes was 76%,while the contribution of climatic factors was 24%.In summary,compared to natural forces such as climatic factors and geographic parameters,human activities were the main factor driving the vegetation dynamics in Guizhou Province.

关键词： vegetation dynamics climate change human activities karst area

The Significance of Inter-Cultural Communication of“Panda Fever”——-A Case Study of “Meng Meng” and “Jiao Qing” in Berlin

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Contemporary Social Sciences 2021年第5期6卷 83-98页

作者： peng dawei China News Service

From the perspective of inter-cultural communication,this paper analyzed the framework and content of dozens of reports written by five mainstream media organizations in Germany on the arrival of two Chinese giant pandas,their daily activities,and giving birth from 2017 to *** results show that the mainstream media reports in Germany on the birth of twin cubs of the Sichuan giant pandas before and after their arrival in Germany were predominantly based on a cultural *** addition,these reports had positive or neutral *** shows that the giant panda international scientific research cooperation between China and foreign countries also has great significance in inter-cultural communication and people-to-people exchanges.

关键词： inter-cultural communication panda Chinese foreign affairs

Effect of cross-flow direction of coolant on film cooling effectiveness with one inlet and double outlet hole injection

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Propulsion and Power Research 2012年第1期1卷 71-77页

作者： Guangchao Lin Chaolin Wu Wei Zhang Zhihai Kou dawei peng Liaoning Key Laboratory of Advanced Technology for Aeronautical Propulsion System Aeroengine and Energy Engineering CollegeShenyang Aerospace UniversityShenyangLiaoning 110136China

In order to study the effect of cross-flow directions of an internal coolant on film cooling performance,the discharge coefficients and film cooling effectiveness with one inlet and double outlet hole injections were *** numerical results show that two different cross-flow directions of the coolant cause the same decrease in the discharge coefficients as that in the case of supplying coolant by a *** different proportion of the mass flow out of the two outlets of the film hole results in different values of the film cooling effectiveness for three different cases of coolant *** film cooling effectiveness is the highest for the case of supplying coolant by the *** a lower blowing ratio of 1.0,the film cooling effectiveness with coolant injection from the right entrance of the passage is higher than that from the left entrance of the *** a higher blowing ratio of 2.0,the opposite result is found.

关键词： Aerospace propulsion system Turbine blade Film cooling Cross-flow Numerical simulation

Climate Change: Carbon Decoupling

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China Weekly 2022年第1期 34-35页

作者： peng dawei 不详

The 2021United Nations Climate Change Conference(COP26)was held in Glasgow 1-13 *** than 190 countries agreed the Glasgow Climate Pact,after six years of negotiations on finalizing the Paris Agreement Rulebook,a techn... 详细信息

关键词： Glasgow agreed Paris

Climate Cooperation:High Hopes for Hydrogen

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China Weekly 2022年第7期 56-57页

作者： peng dawei 不详

China and Germany have a lot to do together on production and application of hydrogen to achieve their ambitious goals of carbon neutrality,Cooperation between China and Germany and Europe on climate change,especially the development of hydrogen energy,could set an excellent model for China-EU *** is the message from guests at the China-Germany Dialogue on Climate Change in early April hosted by China News Service and the German Federal Association for Economic Development and Foreign Trade(BWA).

关键词： Trade neutral goals

乳腺癌局部复发肿瘤组织受体表达变化对患者临床结局的影响

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中国肿瘤生物治疗杂志 2015年第3期22卷 358-362页

作者：梁倩影彭大为海口市人民医院肿瘤化疗科海南海口570208

目的:探讨乳腺癌局部复发肿瘤组织受体表达变化对乳腺癌患者预后的影响。方法:收集2005年1月至2008年12月本院肿瘤科收治的乳腺原发癌经治疗后再次复发的患者56例,采用免疫组化SP法检测患者原发肿瘤组织和复发组织中的雌激素受体(ER)、... 详细信息

目的:探讨乳腺癌局部复发肿瘤组织受体表达变化对乳腺癌患者预后的影响。方法:收集2005年1月至2008年12月本院肿瘤科收治的乳腺原发癌经治疗后再次复发的患者56例,采用免疫组化SP法检测患者原发肿瘤组织和复发组织中的雌激素受体(ER)、孕激素受体(PR)和人表皮生长因子受体2(Her-2)中的表达变化,并分析受体表达变化对患者总生存期(OS)的影响。结果:(1)原发灶和复发肿瘤灶中ER阳性率分别为60.71%(34/56)和55.36%(31/56),PR阳性率分别为57.14%(32/56)和51.79%(29/56),Her-2阳性率分别为44.64%(25/56)和42.86%(24/56);(2)ER在原发灶与复发灶的变化率为33.93%(19/56),PR变化率为37.50%(21/56),Her-2变化率为8.93%(5/56);(3)56例乳腺癌患者死亡22例(39.29%),中位生存时间为21.5个月,1~5年的生存率分别为87.23%、75.65%、70.11%、60.22%、42.86%;Kaplian-Meier分析显示,原发灶和复发灶中ER及PR表达的变化均对患者OS有明显影响,ER由(-→+)较(+→-)预后为好(P=0.0478),PR由(-→+)较(+→-)预后为好(P=0.0182),而Her-2的表达变化由于样本量太小无法评估其影响;(4)多因素分析表明,患者年龄、病理分型、肿瘤分期、是否转移及ER、PR均是影响乳腺癌患者OS的独立预测性因子。结论:乳腺癌患者原发灶与复发灶中ER、PR的表达变化对患者生存存在影响,检测患者肿瘤复发灶中这些受体表达情况,对患者的治疗及预后评估具有一定意义。

关键词：乳腺癌受体雌激素孕激素人表皮生长因子受体2 预后

金融动荡下针对中国银行危机和货币危机的前瞻性研究

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管理世界 2009年第12期25卷 174-175页

作者：陈虹彭大为武汉大学经济与管理学院

中国在当前金融危机中没有发生货币危机的迹象,但是如果不采用有效的控制风险的前瞻性措施,存在发生银行危机的可能性。

关键词：银行危机货币危机前瞻性研究

A23187联合IFN-γ诱导人外周血单个核细胞生成树突状细胞

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中南大学学报（医学版） 2012年第10期37卷 1003-1007页

作者：孟娟彭大为左学兰中南大学湘雅医学院附属海口医院肿瘤内科海口570208 武汉大学中南医院血液科武汉430071

目的:研究钙离子载体(calcium ionophore,CI)A23187联合γ-干扰素(IFN-γ)诱导健康人外周血单个核细胞(PBMNC)生成树突状细胞(DC),探索DC扩增的新方法。方法:分离健康人PBMNC,分别加入GM-CSF+IL-4,A23187,A23187+IFN-γ。体外培养72 h后,分别于光镜、电镜下观察细胞的形态,流式细胞仪检测细胞表面标志,MTT比色法检测其对同种异体T细胞的刺激增殖作用,ELISA检测IL-12和IFN-γ的水平。结果:健康人PBMNC在A23187+IFN-γ的条件下培养72 h后,与GM-CSF+IL-4组,A23187组比较,能迅速获得典型的树突状细胞形态;CD40,CD83,CD86分子的表达较均明显升高(P<0.01),但CD1a分子的表达明显下降(P<0.01);具有明显刺激同种异体T细胞增殖的能力;IL-12,IFN-γ的水平比其他组明显增高(P<0.01)。结论:A23187联合IFN-γ诱导健康人PBMNC能更快速、有效地诱导生成成熟的DC。

关键词：钙离子载体 γ-干扰素树突状细胞外周血单个核细胞

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调节性T细胞与肝癌的研究进展

中南大学学报（医学版） 2015年第4期40卷 433-437页

作者：蒋思卿彭大为何立香中南大学湘雅医学院附属海口医院肿瘤科海口570208

调节性T细胞(regulatory T lymphocytes,Treg)是一类具有独特免疫调节功能的T细胞亚群,可通过多种方式抑制肿瘤免疫,在肿瘤的发生、发展过程中发挥着极为重要的作用,越来越多的证据表明Treg通过多种机制参与了肝癌特别是肝细胞肝癌的形... 详细信息

调节性T细胞(regulatory T lymphocytes,Treg)是一类具有独特免疫调节功能的T细胞亚群,可通过多种方式抑制肿瘤免疫,在肿瘤的发生、发展过程中发挥着极为重要的作用,越来越多的证据表明Treg通过多种机制参与了肝癌特别是肝细胞肝癌的形成和发展,对Treg参与肝癌进展机制的研究从免疫学角度为肝癌治疗提供了新的思路。

关键词：调节性T细胞肝细胞肝癌免疫抑制