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Exploring social-ecological system resilience in South China Karst:Quantification,interaction and policy implication

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Geography and Sustainability 2024年第2期5卷 289-301页

作者： Tiantian Chen yuxi wang Li Peng Chongqing Key Laboratory of Surface Process and Ecological Restoration in the Three Gorges Reservoir Area Chongqing Normal UniversityChongqing 401331China Chongqing Field Observation and Research Station of Surface Ecological Process in the Three Gorges Reservoir Area Chongqing 401331China College of Geography and Resources Sichuan Normal UniversityChengdu 610066China

China’s Grain to Green Program(GTGP),which is one of the largest payments for ecosystem services(PES)in the world,has made significant ecological improvements to the ***,current understanding of its outcomes on the social-ecological system(SES)remains ***,taking the South China Karst as an example,a SES resilience evaluation index system was constructed followed by an exploratory spatial analysis,root mean square error,and Self-Organizing Feature Map to clarify the spatiotemporal changes and relationship of SES resilience,achieve the zoning of SES resilience and provide restoration *** results showed an upward trend in social resilience from 2000 to 2020,especially its subsystem of social *** ecological resilience was stable,owing to a slightly declined ecosystem services and increased landscape ***,nearly half of the counties exhibited a distribution mismatch in SES *** was an obvious inverted U-shaped relationship of SES resilience,indicating a clear threshold effect,and the constraint relation-ship of SES resilience eased over time,demonstrating the effectiveness of the ecological restoration *** played a positive role in reducing regional SES trade-off,but this positive effect was limited,reflecting the limitations of overemphasizing the conversion from farmland to forest and *** SES resilience can be divided into four clusters,which were the key optimization zone for social system,the SES resilience safety zone,the key restoration zone for SES resilience,and the key optimization zone for ecological *** adjustments for the GTGP in these zones should be taken to achieve maximum SES benefits in the future.

关键词： SES resilience Trade-off Clustering GTGP South China Karst

CmMYB3-like negatively regulates anthocyanin biosynthesis and flower color formation during the post-flowering stage in Chrysanthemum morifolium

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Horticultural Plant Journal 2024年第1期10卷 194-204页

作者： Lijie Zhou Shenhui Liu Yiguang wang yuxi wang Aiping Song Jiafu Jiang Sumei Chen Zhiyong Guan Fadi Chen State Key Laboratory of Crop Genetics and Germplasm Enhancement The Key Laboratory of LandscapingMinistry of Agriculture and Rural AffairsCollege of HorticultureNanjing Agricultural UniversityNanjingJiangsu 210095China

Color fading caused by a decrease in anthocyanin accumulation during the post-flowering stage significantly affects postharvest quality of ***,the underlying mechanism by which anthocyanin accumulation decreases during the post-flowering stage still unclear,which greatly restricts design of molecular breeding in ***,a chrysanthemum SG7 R2R3 MYB transcription factor(TF),CmMYB3-like,was identified to have a function in regulating anthocyanin biosynthesis during the post-flowering *** real time PCR(qRT-PCR)assays showed that the expression of CmMYB3-like was gradually downregulated when anthocyanin content increased during the flowering stage and was significantly upregulated during the post-flowering *** transformation of chrysanthemum and dual-luciferase assays in *** leaves showed that CmMYB3-like suppressed anthocyanin accumulation by inhibiting the transcription of CmCHS and CmANS directly and that of CmF3H ***,overexpression or suppression of CmMYB3-like did not affect the biosynthesis of flavones or *** transformation of chrysanthemum revealed that the overexpression of CmMYB3-like inhibited anthocyanin accumulation,but its suppression prevented the decrease in anthocyanin accumulation during the post-flowering *** results revealed a crucial role of CmMYB3-like in regulating the color of petals during the post-flowering stage and provided a target gene for molecular design breeding to improve the postharvest quality of chrysanthemum.

关键词： Post-flowering stage Color fading Anthocyanins CmMYB3-like Chrysanthemum Molecular breeding

Bisulfite-mediated base-free decarboxylative carbonylsulfination of alkenes:access to β-keto sultines

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Science China Chemistry 2024年

作者： Yongxin Zhang Pan Zhou Xinyue Ma Xiaoxiao Yang Xing Fang yuxi wang Chao Shu State Key Laboratory of Green Pesticide Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction CCNU-uOttawa Joint Research Centre College of Chemistry Central China Normal University (CCNU) Key Laboratory of Functional Molecular Solids Ministry of Education Anhui Normal University

A straightforward three-component decarboxylative cross-coupling of α-keto acids, alkenes and sodium bisulfite is established for the construction of otherwise challenging-to-access β-keto sultine derivatives. This reaction involves the photoinduced carbonylsulfination of alkenes and utilizes sodium bisulfite as both a sulfur dioxide surrogate and buffer agent for deprotonation of α-keto carboxylic acids. Of note, the practical procedure featured broad substrate scope and group tolerance for diverse biologically important molecules under mild and operationally simple conditions, using an organic photocatalyst. Mechanistic studies indicated that the transformation proceeds an apparent two-pronged radical addition/radical-polar crossover/SO2insertion/ionic cyclization relay process, distinct from traditional alkenes bifunctionalization.

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Application of Non-Fuel Power Generation Technology in Steel Industry

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Frontiers of Metallurgical Industry

Frontiers of Metallurgical Industry 2024年第2期2卷 1-4页

作者： Ganglie Zhu Sizhuo Cai yuxi wang Ma Steel Corporation Thermal Power Plant Shanxi Meijin Steel Co. Ltd. Shanxi Changping Iron and Steel Co. Ltd.

Through continuous equipment technology transformation and full utilization of Ma Steel's abundant gas,the boiler no longer relies on fuel oil for stable combustion during boiler startup,sliding parameter shutdown,and RB,thus achieving safe and stable operation of the boiler under any abnormal working conditions,and achieving good economic and social benefits.

关键词： fuel oil excess gas benefit

新兴立场标记“谁懂(啊)”的话语功能及形成探析

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湖南师范大学社会科学学报 2024年第1期53卷 150-156页

作者：王羽熙湖南师范大学文学院湖南长沙410081

新兴立场标记“谁懂(啊)”有话语组织、立场表达、人际互动等话语功能。具体来说,“谁懂(啊)”具有开启话题、衔接前后语篇等话语组织功能,能够表达认识、评价和情感三类主观立场,其立场的正面/负面性与触发事项的预期性有关;此外,其人... 详细信息

新兴立场标记“谁懂(啊)”有话语组织、立场表达、人际互动等话语功能。具体来说,“谁懂(啊)”具有开启话题、衔接前后语篇等话语组织功能,能够表达认识、评价和情感三类主观立场,其立场的正面/负面性与触发事项的预期性有关;此外,其人际功能主要是寻求受话人的认同,具有交互主观性。从形成机制来看,话语标记用法的“谁懂(啊)”由疑问用法发展而来,其发展轨迹可归纳为:询问表疑>反问否定>主观情态>立场标记。

关键词：立场标记话语功能语用推理交互主观性预期

SGRec:一种基于双层信息交互的会话推荐算法

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小型微型计算机系统 2024年第6期45卷 1392-1397页

作者：王誉熹彭敦陆上海理工大学光电信息与计算机工程学院上海200093

会话推荐是根据匿名用户的交互序列去推荐该用户下一个最有可能交互的项目.在现有的会话推荐模型中,大多数模型只学习了图的单层信息,这种学习方式会导致对交互序列的信息提取不完整.本文提出了一种结合项目的图级信息与序列级信息的推... 详细信息

会话推荐是根据匿名用户的交互序列去推荐该用户下一个最有可能交互的项目.在现有的会话推荐模型中,大多数模型只学习了图的单层信息,这种学习方式会导致对交互序列的信息提取不完整.本文提出了一种结合项目的图级信息与序列级信息的推荐算法.图级信息是将用户的交互序列映射为一个高维空间超图,通过超图神经网络去学习图中每个节点的信息;会话中项目的序列级信息采用深度序列提取器和注意力网络去获取,最终将两组信息融合并通过自注意力网络进行下一项推荐.通过这种方法可以获得会话序列中每个项目更完整的信息.本文在真实数据集Diginetica,Tmall,Nowplaying上设置对比实验验证了算法的有效性,该算法在MRR@N和P@N上有明显提升,有效地证明了本文算法的推荐性能.

关键词：会话推荐超图神经网络注意力网络循环神经网络

纳米炭黑的Steglich酯化反应制备及乙二醇分散性

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纺织学报 2024年第7期45卷 104-111页

作者：王玉玺唐春霞张丽平付少海江苏省纺织品数字喷墨印花工程技术研究中心江苏无锡214122 生态纺织教育部重点实验室(江南大学) 江苏无锡214122

为解决炭黑在乙二醇溶液中难分散的问题,确保炭黑在聚酯纤维原液着色中具有良好的分散性。先通过液相氧化法对炭黑表面进行改性,在炭黑表面引入反应性基团—羧基,并选取合适的氧化炭黑,通过Steglich酯化反应在氧化炭黑表面接枝乙二醇和... 详细信息

为解决炭黑在乙二醇溶液中难分散的问题,确保炭黑在聚酯纤维原液着色中具有良好的分散性。先通过液相氧化法对炭黑表面进行改性,在炭黑表面引入反应性基团—羧基,并选取合适的氧化炭黑,通过Steglich酯化反应在氧化炭黑表面接枝乙二醇和不同相对分子质量的聚乙二醇。对氧化炭黑和接枝炭黑的表面结构以及在乙二醇溶液中的分散性进行测试与分析。结果表明:氧化仅发生在炭黑表面并未对炭黑造成严重破坏,随氧化时间的延长,炭黑表面羧基含量显著提高,氧化8 h后,其表面羧基含量为0.616 mmol/g;PEG600接枝的氧化炭黑其接枝率在33%以上,最小平均粒径稳定在132.1 nm左右,其能在乙二醇溶液中分散均匀,无聚集体出现,且制备的接枝炭黑具有良好的分散稳定性,其储存稳定性在93%以上,耐热稳定性在92%以上。

关键词：纳米炭黑氧化分散性聚酯纤维原液着色酯化接枝聚乙二醇 Steglich酯化反应

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逆变型新能源场站送出线时域方向元件

电力系统自动化 2024年第16期48卷 184-191页

作者：文明浩陈玉王玉玺马睿智韩珂许继电气股份有限公司河南省许昌市461000 强电磁技术全国重点实验室(华中科技大学) 湖北省武汉市430074

逆变型新能源暂态故障特征可能导致送出线保护近区故障时现有距离保护方向元件不正确动作。基于逆变型新能源故障期间输出的正序无功电流特征,文中提出了适用于逆变型新能源场站送出线的故障方向判据,通过比较故障时保护安装处正序无功... 详细信息

逆变型新能源暂态故障特征可能导致送出线保护近区故障时现有距离保护方向元件不正确动作。基于逆变型新能源故障期间输出的正序无功电流特征,文中提出了适用于逆变型新能源场站送出线的故障方向判据,通过比较故障时保护安装处正序无功电流计算值与参考值之间的欧氏距离区分正、反向故障。仿真结果表明,提出的方向元件在各种故障场景下都能够准确地判断保护近区故障方向。

关键词：逆变型新能源线路保护距离保护方向元件无功电流欧氏距离

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成人社交焦虑问卷中文版的效度和信度评价

中国心理卫生杂志 2024年第8期38卷 730-736页

作者：王愉茜臧寅垠彭玉佳北京大学心理与认知科学学院北京市行为与健康重点实验室北京100871 北京大学人工智能研究院北京100871 跨媒体通用人工智能全国重点实验室北京通用人工智能研究院北京100080

目的:检验成人社交焦虑问卷中文版(CSAQ-A)的效度和信度。方法:选取555名成人[年龄18~60岁,平均(29±8)岁]完成CSAQ-A。采用Liebowitz社交焦虑量表(LSAS)、简版惧怕否定评价量表(BFNE)、宾州忧虑问卷(PSWQ)、特质焦虑量表(STAI-T)、贝... 详细信息

目的:检验成人社交焦虑问卷中文版(CSAQ-A)的效度和信度。方法:选取555名成人[年龄18~60岁,平均(29±8)岁]完成CSAQ-A。采用Liebowitz社交焦虑量表(LSAS)、简版惧怕否定评价量表(BFNE)、宾州忧虑问卷(PSWQ)、特质焦虑量表(STAI-T)、贝克抑郁量表第二版(BDI-II)为效标工具。间隔4周后143名成人完成重测。结果:5因子结构的拟合指数良好(χ^(2)/df=3.06,CFI=0.92,TLI=0.91,RMSEA=0.06,SRMR=0.05);CSAQ-A得分与LSAS、BFNE、PSWQ、STAI-T、BDI-II得分均呈正相关(ICC=0.40~0.67,均P<0.001)。CSAQ-A总量表的Cronbach α系数为0.96,重测信度为0.80。结论:成人社交焦虑问卷中文版评估成年人群社交焦虑症状的效度和信度良好。

关键词：社交焦虑成人效度信度测量等值性