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Researching the Impact of the Quality of Village Governance on Farmers’Well-Being:From the Perspectives of Income and Occupational Differentiation

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Contemporary Social Sciences 2024年第4期9卷 17-40页

作者： Chen Qiulin peng ziwei Fu Gang Sichuan Vocational College of Finance and Economics College of Management Sichuan Agricultural University Sichuan Agricultural University Chengdu 611134China

The goal of village governance is to improve the well-being of farmers,so this study aims to measure the impact the quality of village governance on the well-being of *** also examines the heterogeneity of this impact across different farmer groups from the perspectives of income levels and occupational *** this end,this study developed an indicator system based on survey data collected from 1,442 farmers in the Sichuan,Shaanxi,and Gansu provinces,as well as the Ningxia Hui autonomous *** linear regression models were then used to analyze this data,and the findings revealed that improvements in the quality of village governance significantly increased the well-being of ***,primary-level empowerment and capacity building were shown to contribute the most to the enhancement of the farmers’well-being,followed by social inclusion,and social cohesion was found to have only a minimal *** terms of income levels,improving the quality of village governance benefited middle-income farmers the most,followed by low-income farmers,and it had the least effect on high-income *** terms of occupations,full-time farmers gained the most from improvements in the quality of village governance,followed by off-farm farmers,with part-time farmers benefiting the *** on these findings,this study suggests that policymakers should improve the quality of village governance to enhance the well-being of farmers,focusing on the impact that level of income and occupational differentiation have on village governance.

关键词： quality of village governance farmers’well-being differentiation

HPLC combined with chemometrics for quality control of Huamoyan Granules or Capsules

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Chinese Herbal Medicines 2024年第3期16卷 449-456页

作者： Minhang Dou Jiayi Huang Mimi Yu Huahua Li Yang Song ziwei peng Shouying Du Jie Bai School of Chinese Materia Medica Beijing University of Chinese Medicine Beijing Institute for Drug Control NMPA Key Laboratory for Quality Evaluation of Traditional Chinese Medicine (Traditional Chinese Patent Medicine)Beijing Key Laboratory of Analysis and Evaluation on Chinese Medicine

Objective:Huamaoyan Granules(HMYG) and Huamaoyan Capsules(HMYC) are Chinese patent medicines with different dosage forms of the same *** to the different preparation process,the chemical composition of these Chinese patent medicines varies greatly among different forms,but there were few studies on the difference comparison and quality control of *** order to improve the effectiveness and safety in its clinical application,an idea combining high performance liquid chromatogra p hy(HPLC) and chemometrics was put forward to study the quality control of Chinese patent medicines in different dosage forms of the same ***:The differential markers of HMYG and HMYC were explored based on HPLC fingerprint and chemometrics including orthogonal projections to latent structures-discriminant analysis(OPLS-DA),principal component analysis(PCA),and hierarchical cluster analysis(HCA).Finally,the quantitative analysis method of related components was established by ***:A quality control method for HMYG and HMYC was ***,the chemical components of HMYG and HMYC were systematically analyzed by HPLC *** exploration showed that there were 20 characteristic peaks and 57 common ***,the potential differential markers between HMYG and HMYC were explored by chemometrics,and the differential markers were screened after intersection with the 20 characteristic ***,HPLC quantitative analysis methods for nine components were established,including seven differential markers(neochlorogenic acid,protocatechualdehyde,chlorogenic acid,cryptochlorogenic acid,caffeic acid,rosmarinic acid and salvianolic acid A).The results of HPLC quantitative analysis showed that the contents of eight components in HMYG and HMYC samples were significantly *** to the above results,the differential markers between HMYG and HMYC screened based on HPLC fingerprint and chemometrics can effectively characterize the d

关键词： chemometrics Chinese patent medicine high performance liquid chromatography fingerprint Huamoyan Granules/Capsules quality control synovitis

高铁建设是否缩小了区域创新差距?——基于多期差分法和社会网络分析

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合肥工业大学学报（社会科学版） 2024年第1期38卷 70-81页

作者：胡艳彭紫薇李彦安徽大学经济学院安徽合肥230039 安徽大学创新发展战略研究院安徽合肥230039

基于我国2005-2019年的城市面板数据,从高铁开通和高铁网络两个视角,实证检验高铁建设对区域创新差距的影响。结果显示,高铁开通对区域创新差距具有显著的缩小效应。区域异质性分析发现,高铁开通对区域创新差距的缩小效应对西部地区的... 详细信息

基于我国2005-2019年的城市面板数据,从高铁开通和高铁网络两个视角,实证检验高铁建设对区域创新差距的影响。结果显示,高铁开通对区域创新差距具有显著的缩小效应。区域异质性分析发现,高铁开通对区域创新差距的缩小效应对西部地区的作用更大,且在二线以上城市更为明显;机制分析表明,人力资本和物质资本是高铁建设影响区域创新差距的中介路径,且后者的作用更大;社会网络分析则认为,城市在高铁网络中的联系广度和中心性越高,高铁对区域创新差距的缩小效应越强。基于此,文章从优化高铁网络配置、改善要素流动机制和制定区域创新发展策略三方面提出了相应的政策建议。

关键词：高铁建设创新差距社会网络分析中心度

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三头挤出成形氧化铝基陶瓷的精度研究

中国机械工程 2024年第3期35卷 481-486页

作者：彭子伟王寅成杨力樊自田华中科技大学材料科学与工程学院武汉430074

在自主构建的三头分层挤出成形装备的基础上,研究了单头挤出时挤出头直径d、挤出头移动速度v_(s)、挤出层高h对成形的氧化铝基陶瓷表面粗糙度及尺寸精度的影响;然后研究了双头和三头协同挤出时陶瓷坯体试样的配合精度。实验结果表明:单... 详细信息

在自主构建的三头分层挤出成形装备的基础上,研究了单头挤出时挤出头直径d、挤出头移动速度v_(s)、挤出层高h对成形的氧化铝基陶瓷表面粗糙度及尺寸精度的影响;然后研究了双头和三头协同挤出时陶瓷坯体试样的配合精度。实验结果表明:单头挤出时,d为0.41 mm,v_(s)为10 mm/s,h/d为0.85条件下,陶瓷侧表面粗糙度较低(为24.423μm),尺寸偏差最小为0.67%;双头协同挤出成形时,双头定位配合误差为1.03%,侧表面尺寸粗糙度为30.671μm;三头协同挤出成形时,三头定位配合误差为1.15%,侧表面尺寸粗糙度为30.671μm。最后,采用双头与三头挤出成形工艺方法制备出氧化铝基陶瓷试样,验证了多头多材料协同挤出的可行性。

关键词：三头挤出成形氧化铝基陶瓷多头协同多材料精度

Flexible electrochemical fiber sensor for intracranial nitric oxide monitoring

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Science China Chemistry 2024年第8期67卷 2431-2433页

作者： ziwei Liu Huisheng peng State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular ScienceInstitute of Fiber Materials and Devicesand Laboratory of Advanced MaterialsFudan UniversityShanghai 200438China

Real-time and accurate monitoring of vital biomarkers in vivo forms a crucial foundation for health assessment,early intervention,and disease ***,continuous monitoring of intracranial nitric oxide(NO)levels plays a pivotal role in promptly assessing immune responses,neurovirulence,and cerebrovascular diseases[1].Differing from non-real-time monitoring methods like chemiluminescence[2]and fluorescent probes[3],implantable electrochemical sensors excel in simultaneously high temporal resolution,sensitivity,and cost-effectiveness[4].

关键词： prompt electrochemical monitoring

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Covalency competition induced selective bond breakage and surface reconstruction in manganese cobaltite towards enhanced electrochemical charge storage

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Green Energy & Environment 2024年第5期9卷 909-918页

作者： peng Gao Pei Tang Ying Mo Peitao Xiao Wang Zhou Shi Chen Hongliang Dong ziwei Li Chaohe Xu Jilei Liu College of Materials Science and Engineering Hunan Joint International Laboratory of Advanced Materials and Technology for Clean EnergyHunan Province Key Laboratory for Advanced Carbon Materials and Applied TechnologyHunan UniversityChangshaHunan410082China Department of Materials Science and Engineering National University of Defense TechnologyChangshaHunan410073China Joint Key Laboratory of the Ministry of Education Institute of Applied Physics and Materials EngineeringUniversity of MacaoAvenida da UniversidadeTaipaMacao999078China Center for High Pressure Science and Technology Advanced Research PudongShanghai201203China College of Aerospace Engineering Chongqing UniversityChongqing400044China

Manganese cobaltite(MnCo_(2)_(4))is a promising electrode material because of its attractive redox chemistry and excellent charge storage *** previous work demonstrated that the octahedrally-coordinated Mn are prone to react with the hydroxyl ions in alkaline electrolyte upon electrochemical cycling and separates on the surface of spinel to reconstruct into d-MnO_(2) nanosheets irreversibly,thus results in a change of the reaction mechanism with Kþion ***,the low capacity has greatly limited its practical ***,we found that the tetrahedrally-coordinated Co_(2) þions were leached when MnCo_(2)_(4) was equilibrated in 1 mol L^(-1) HCl solution,leading to the formation of layered CoOOH on MnCo_(2)_(4) surface which is originated from the covalency competition induced selective breakage of the CoT–O bond in CoT–O–CoO and subsequent rearrangement of free Co_(6) *** as-formed CoOOH is stable upon cycling in alkaline electrolyte,exhibits conversion reaction mechanism with facile proton diffusion and is free of massive structural evolution,thus enables utilization of the bulk electrode material and realizes enhanced speciﬁc capacity as well as facilitated charge transfer and ion *** general,our work not only offers a feasible approach to deliberate modiﬁcation of MnCo_(2)_(4)'s surface structure,but also provides an in-depth understanding of its charge storage mechanism,which enables rational design of the spinel oxides with promising charge storage properties.

关键词： Manganese cobaltite Tetrahedrally-coordinated Co^(2+)leaching Selective bond breakage Surface reconstruction Charge storage mechanisms

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区域畜禽环境承载力核算方法研究与应用

农业环境科学学报 2023年第4期42卷 769-777页

作者：彭紫微吴根义黄杰戴诗琴湖南农业大学资源环境学院长沙410128

针对畜禽养殖区域布局不合理,科学、实用的环境承载力核算方法欠缺的问题,本研究在畜禽土地承载力核算方法的基础上,综合考虑水环境容量和经济社会发展等因素,构建了基于作物养分需求及水土环境多要素的畜禽环境承载力核算模型,确定了... 详细信息

针对畜禽养殖区域布局不合理,科学、实用的环境承载力核算方法欠缺的问题,本研究在畜禽土地承载力核算方法的基础上,综合考虑水环境容量和经济社会发展等因素,构建了基于作物养分需求及水土环境多要素的畜禽环境承载力核算模型,确定了模型参数取值,形成了畜禽环境承载力核算方法。以湖南省为例对核算方法进行应用验证,核算出湖南省畜禽环境承载力为6113.16万头当量生猪。经与相关研究成果比对分析,认为该核算方法优于我国当前广泛采用的土地承载力核算方法,表明该核算方法具有较强的科学性与实用性,对各地科学合理的测算畜禽养殖环境承载力,确保畜牧业与环境协调发展具有指导意义。

关键词：畜禽养殖环境承载能力水环境容量环境质量目标

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淮河模型试验大厅大跨度钢结构分析计算方法

水利水电技术 2013年第1期44卷 50-52,55页

作者：彭紫薇河海大学水利水电学院江苏南京210098

淮河模型试验大厅工程为大跨度异型空间管桁架结构,下部支撑结构为矩形钢管混凝土排架结构。通过对淮河模型试验大厅工程的结构分析,介绍了该结构的结构方案,荷载取值,并分别采用SAP2000和Midas对上部屋盖及下部矩形钢管混凝土排架结构... 详细信息

淮河模型试验大厅工程为大跨度异型空间管桁架结构,下部支撑结构为矩形钢管混凝土排架结构。通过对淮河模型试验大厅工程的结构分析,介绍了该结构的结构方案,荷载取值,并分别采用SAP2000和Midas对上部屋盖及下部矩形钢管混凝土排架结构进行了整体模态分析。为了考察该结构的薄弱部位,并进一步对该结构做了三方向的推覆分析。计算表明,结构受力合理,能满足规范要求。

关键词：空间钢管桁架矩形钢管混凝土结构弹性静力分析屈曲分析弹塑性分析

Li(Sc,M)Si_(2)O_(6)∶Cr^(3+)(M=Ga^(3+)/Lu^(3+)/Y^(3+)/Gd^(3+))的近红外发光性能

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发光学报 2024年第3期45卷 407-414页

作者：卢紫微刘永福罗朝华孙鹏蒋俊宁波大学材料科学与化学工程学院浙江宁波315211 中国科学院宁波材料技术与工程研究所浙江宁波315201

荧光转换型近红外发光二极管(NIR pc-LED)具有体积小、谱带宽、峰位易调谐等优点,是新一代NIR光源发展的前沿,其关键在于研发可被蓝光有效激发的高效率宽带近红外荧光粉。LiScSi_(2)O_(6)∶Cr^(3+)荧光材料的激发波长为460 nm,发射峰位... 详细信息

荧光转换型近红外发光二极管(NIR pc-LED)具有体积小、谱带宽、峰位易调谐等优点,是新一代NIR光源发展的前沿,其关键在于研发可被蓝光有效激发的高效率宽带近红外荧光粉。LiScSi_(2)O_(6)∶Cr^(3+)荧光材料的激发波长为460 nm,发射峰位在845 nm,光谱带宽为156 nm,内量子效率为64.4%。基于该体系,本文通过M离子(M=Ga^(3+),Lu^(3+),Y^(3+),Gd^(3+))取代Sc^(3+)的方式对其性能进行调控。结果表明,引入M离子易生成杂相或发生相变,降低了材料的发光性能。本文从晶体结构出发对其调控过程进行了分析。

关键词： LiScSi_(2)O_(6)∶Cr^(3+) 阳离子取代晶体结构