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财政分权的绿色技术创新效应研究

工业技术经济 2024年第2期43卷 79-87页

作者：孙玉阳薛程辽宁大学经济学部经济学院沈阳110036 辽宁省生态环境监测中心沈阳110161

绿色技术创新是实现绿色低碳发展的核心驱动力,明确财政分权在绿色技术创新过程中发挥的作用具有十分重要的现实意义。本文基于中国省级面板数据,运用固定效应模型等多种数据分析方法,实证考察了财政分权对绿色技术创新的影响。研究发现... 详细信息

绿色技术创新是实现绿色低碳发展的核心驱动力,明确财政分权在绿色技术创新过程中发挥的作用具有十分重要的现实意义。本文基于中国省级面板数据,运用固定效应模型等多种数据分析方法,实证考察了财政分权对绿色技术创新的影响。研究发现,财政分权抑制了绿色技术创新。财政科学技术支出和环境规制是财政分权抑制绿色技术创新的主要渠道;在低收入地区,财政分权抑制了绿色技术创新,而在中高收入地区,财政分权促进了绿色技术创新。本文为深化我国财政分权体制改革,加快推进绿色技术创新提供了政策启示。

关键词：财政分权绿色技术创新环境规制财政科学技术支出区域异质性财政分权体制改革

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基于GBS测序对无芒雀麦资源群体的解析

草业科学 2024年第5期41卷 1149-1160页

作者：孙雪孙强周乐朝木力嘎孙宇阳张延辉西部干旱荒漠区草地资源与生态教育部重点实验室新疆乌鲁木齐830052 新疆草地资源与生态实验室新疆乌鲁木齐830052 新疆农业大学草业学院新疆乌鲁木齐830052 新疆维吾尔自治区草原总站新疆乌鲁木齐830049 新疆喀什地区草原站新疆喀什844599

无芒雀麦(Bromus inermis)是一种重要的牧草,但目前还缺乏从分子水平对于种质资源的亲缘关系的解析。本研究基于GBS测序技术,对采自不同区域的67份无芒雀麦种质资源亲缘关系和遗传结构进行分析。结果表明:1)无芒雀麦表型存在丰富的多样... 详细信息

无芒雀麦(Bromus inermis)是一种重要的牧草,但目前还缺乏从分子水平对于种质资源的亲缘关系的解析。本研究基于GBS测序技术,对采自不同区域的67份无芒雀麦种质资源亲缘关系和遗传结构进行分析。结果表明:1)无芒雀麦表型存在丰富的多样性,比较21个表型指标变异特征,变异系数为12.67%~54.17%。2)基于表型特征将67份材料可分为4个类群,类群Ⅰ、Ⅱ和Ⅲ均为单一材料,分别为N06(新疆)、M09(内蒙古)和QG07(甘肃)。类群Ⅳ包含64份材料,各地区均有。基于SNP位点信息构建的系统发育进化树和主成分分析,将67份无芒雀麦种质资源分成4个类群:类群Ⅰ,N08,属于新疆北部山地;类群Ⅱ为5份亲缘关系密切的疆外区域种质;类群Ⅲ为39份与其他类群种质亲缘关系较远的材料组成;类群Ⅳ由22份新疆区域种质组成。两种方法对材料的划分具有相似性。3)根据GBS测序序列,发现SNP的变异类型主要为碱基转换,且转换占比高于颠换,转换占76.02%,颠换占23.98%。4)基于不同材料SNP的分布特征,通过群体遗传结构分析将无芒雀麦材料划分为两个类群,类群Ⅰ主要来自于新疆,类群Ⅱ包含全国各地材料,67份材料存在群体结构。以上结果为无芒雀麦种质资源的鉴定评价、关联分析、系统分类及品种选育等奠定了基础。

关键词：无芒雀麦简化基因组测序种质资源群体结构亲缘关系表型性状

双碳目标约束下电力行业低碳转型的制度门槛效应研究

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工业技术经济 2024年第8期43卷 110-117页

作者：孙玉阳汪海悦吕向楠辽宁大学经济学部经济学院沈阳110036 沈阳城市建设学院艺术与传媒系沈阳110167

电力行业低碳转型不仅关系本行业碳达峰、碳中和目标的达成,也影响着中国总体碳达峰、碳中和目标的实现,对于促进经济社会低碳转型具有十分重要的现实意义。本文采用中国省级面板数据实证检验了碳排放规制对电力行业低碳转型的影响效果... 详细信息

电力行业低碳转型不仅关系本行业碳达峰、碳中和目标的达成,也影响着中国总体碳达峰、碳中和目标的实现,对于促进经济社会低碳转型具有十分重要的现实意义。本文采用中国省级面板数据实证检验了碳排放规制对电力行业低碳转型的影响效果。研究发现,碳排放规制促进了电力行业低碳转型,并且通过了稳健性检验。受财政分权程度与市场化程度影响,碳排放规制对中国电力行业低碳转型具有门槛效应。随着财政分权程度的提升,碳排放规制对电力行业低碳转型促进作用呈现边际递减趋势。而随着市场化程度的提升,碳排放规制对电力行业低碳转型促进作用呈现边际递增趋势。本文为“双碳目标”约束下,加快推进电力行业低碳转型提供了经验证据和政策启示。

关键词：双碳目标电力行业低碳转型碳排放规制财政分权市场化程度绿色技术创新门槛效应

面源污染时空格局动态演变预测与防治分区研究

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环境科学与管理 2024年第5期49卷 64-67页

作者：谭涛孙玉阳阳谷县环境监控中心山东聊城252300 阳谷县生态环境保护综合执法大队山东聊城252300

为对面源污染时空格局精准预测,改善其污染情况,此次研究以某研究区域为例,开展面源污染时空格局演变并提出一定的防治策略。以研究范围内不同区域为实例,对20年来的面源污染排放强度进行核算,建立数据统计模型,并利用EKC预测模型获取... 详细信息

为对面源污染时空格局精准预测,改善其污染情况,此次研究以某研究区域为例,开展面源污染时空格局演变并提出一定的防治策略。以研究范围内不同区域为实例,对20年来的面源污染排放强度进行核算,建立数据统计模型,并利用EKC预测模型获取空间自相关关系,获取研究区内时空格局动态演变情况。研究区分析结果表明:各区域污染数值均超过1%的置信水平,且空间相关测度GMI指数大于0.20;研究区域D及F为热点区域,区域A和G为过渡区域,区域B和E为冷点区域,可依据此进行分区治理。

关键词：面源污染时空格局动态演变流失系数冷热点分析

Sulforaphane attenuates dextran sodium sulphate induced intestinal inflammation via IL-10/STAT3 signaling mediated macrophage phenotype switching

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Food Science and Human Wellness 2022年第1期11卷 129-142页

作者： yuyang sun Jiqing Tang Cui Li Jun Liu Haijie Liu College of Food Science and Nutritional Engineering China Agricultural UniversityBeijing 100083China Beijing Advanced Innovation Center for Food Nutrition and Human Health Beijing Technology and Business UniversityBeijing 100048China

Innate immunity,particularly macrophages,is critical for intestinal ***,a dietary isothiocyanate from cruciferous vegetables,has been reported to protect against intestinal ***,the role of macrophages in sulforaphane mediated intestinal inflammation and the underlying molecular mechanisms have not been studied *** this study,sulforaphane effectively attenuated dextran sodium sulphate(DSS)induced intestinal inflammation in murine *** note,sulforaphane skewed the switching from classically(M1)to alternatively(M2)activated phenotype both in intestinal and bone marrow-derived macrophages(BMDMs).The expression levels of M1 associated maker genes induced by DSS or lipopolysaccharide(LPS)plus interferon gamma-γ(IFN-γ)were suppressed by sulforaphane while M2 marker gene expression levels were *** resulted in alteration of inflammatory mediators,particularly interleukin-10(IL-10),both in colon tissues and culture medium of ***,IL-10 was found to mediate the sulforaphane induced M2 phenotype switching of BMDMs through the activation of STAT3 *** was confirmed by immunofluorescence analysis with increased number of p-STAT3-positive cells in the colon ***,anti-IL-10 neutralizing antibody significantly interfered M2 phenotyping of BMDMs induced by sulforaphane with reduced STAT3 *** here introduced a potential utilization of sulforaphane for intestinal inflammation treatment with macrophages as the therapeutic targets.

关键词： BMDMs Intestinal inflammation IL-10 Macrophage phenotype STAT3 Sulforaphane

Adaptive Dead-Time Modulation Scheme for Bidirectional LLC Resonant Converter in Energy Router

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CSEE Journal of Power and Energy Systems 2024年第4期10卷 1710-1721页

作者： Chenghao sun Qiuye sun Rui Wang yuyang Li Dazhong Ma College of Information Science and Engineering Northeastern UniversityShenyang 110819China

Although the dead-time optimization design of resonant converters has been widely researched,classical design methods focus more on achieving zero-voltage switching(ZVS)*** body diode loss is always ignored,which results in low-efficiency of the converter,especially,in energy router(ER).To deal with this problem,this paper proposes an adaptive deadtime modulation scheme for bidirectional LLC resonant converters in ***,the power loss of the MOSFET is analyzed based on the ***,a novel dead-time optimization modulation principle is *** can eliminate the body diode loss of MOSFET compared with existing *** on the optimization modulation principle,this paper proposes an adaptive dead-time modulation *** this end,the converter adopting the scheme no longer needs to calculate dead-time,which simplifies the parameter design ***,this scheme enables dead-time to dynamically change with working conditions according to the dead-time optimization modulation *** these effects,the ZVS operation is achieved,and the body diode loss of MOSFET is also ***,a digital implementation method is designed to make the proposed modulation scheme have fast-transient ***,experimental results show that the proposed dead-time modulation scheme enables converters to achieve ZVS operation in all working conditions,and has higher efficiency than classical dead-time design methods.

关键词： Adaptive modulation bidirectional LLC body diode loss dead-time energy router ZVS

The risk of mpox importation and subsequent outbreak potential in Chinese mainland: a retrospective statistical modelling study

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Infectious Diseases of Poverty 2024年第1期13卷 63-73页

作者： Xiaowei Deng yuyang Tian Junyi Zoul Juan Yang Kaiyuan sun Hongjie Yu School of Public Health Key Laboratory of Public Health SafetyMinistry of EducationFudan UniversityShanghai 200032China Division of International Epidemiology and Population Studies Fogarty International CenterNational Institutes of HealthBethesdaMDUSA

Background The 2022-2023 mpox(monkeypox)outbreak has spread rapidly across multiple countries in the non-endemic region,mainly among men who have sex with men(MSM).In this study,we aimed to evaluate mpox's importation risk,border screening effectiveness and the risk of local outbreak in Chinese *** We estimated the risk of mpox importation in Chinese mainland from April 14 to September 11,2022 using the number of reported mpox cases during this multi-country outbreak from *** and the international air-travel data from Official Aviation *** constructed a probabilistic model to simulate the effectiveness of a border screening scenario during the mpox outbreak and a hypothetical scenario with less stringent quarantine *** we further evaluated the mpox outbreak potential given that undetected mpox infections were introduced into men who have sex with men,considering different transmissibility,population immunity and population *** We found that the reduced international air-travel volume and stringent border entry policy decreased about 94% and 69% mpox importations *** the quarantine policy,15-19% of imported infections would remain *** a case of mpox is introduced into active MSM population with almost no population immunity,the risk of triggering local transmission is estimated at 42%,and would rise to>95% with over six *** Our study demonstrates that the reduced international air-travel volume and stringent border entry policy during the COvID-19 pandemic reduced mpox importations ***,the risk could be sub-stantially higher with the recovery of air-travel volume to pre-pandemic *** could emerge as a public health threat for Chinese mainland given its large MSM community.

关键词： Mpox(Monkeypox) Importation risk International air travel Statistical modelling Men who have sex with men

Interparticle energy transfer between NaNdF_(4) and NaYbF_(4) in self-assembled nanostructures

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Journal of Rare Earths 2024年第6期42卷 1029-1035,I0001页

作者： Xinyu Chen Haoze Yang yuyang Gu Chenqing Wen Yishuo sun Jiaming Ke Wei Feng Department of Chemistry and State Key Laboratory of Molecular Engineering of Polymers Fudan University Shanghai200433China

Forster resonance energy transfer(FRET)is a widely used spectroscopic *** development of donor-acceptor combinations is essential to advance this *** make the energy transfer efficiency independent of the external environment,we explored the potential of constructing donor—acceptor combinations with lanthanide ion-doped nanoparticles(LNPs),in which the 4f electrons of the lanthanide ions are shielded by the 5s and 6p ***-radiative energy transfer between LNPs was demonstrated in self-assembled nanostructures and core-shell structure of LNPs was used to control the distance between donor and acceptor in self-assembled *** emission intensity ratio of donor and acceptor illustrates that the energy transfer efficiency decreases significantly with increasing distance and the effective energy transfer distance is 8.5 nm,showing the potential of using LNPs as donor-acceptor pairs in the construction of distance-dependent energy transfer system.

关键词： Lanthanide nanoparticles Self-assembly Energy transfer Distance Epitaxialgrowth Rare earths

Electronic structures and Mott state of epitaxial TaS_(2) monolayers

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Science China(Physics,Mechanics & Astronomy) 2024年第5期67卷 91-97页

作者： Qichao Tian Chi Ding Xiaodong Qiu Qinghao Meng Kaili Wang Fan Yu yuyang Mu Can Wang Jian sun Yi Zhang National Laboratory of Solid State Microstructure School of PhysicsNanjing UniversityNanjing 20093China Collaborative Innovation Center of Advanced Microstructures Nanjing UniversityNanjing 210093China School of Physics and Electronic Sciences Changsha University of Science and TechnologyChangsha 410114China Hefei National Laboratory Hefei 230088China

Layered material TaS2hosts multiple structural phases and exotic correlated quantum states,including charge density wave(CDW),superconductivity,quantum spin liquid,and Mott insulating ***,we synthesized TaS_(2)monolayers in H and T phases using the molecular beam epitaxial(MBE)method and studied their electronic structures via angle-resolved photoemission spectroscopy(ARPES).We found that the H phase TaS_(2)(H-TaS_(2))monolayer is metallic,with an energy band crossing the Fermi *** contrast,the T phase TaS_(2)(T-TaS_(2))monolayer shows an insulated energy gap at the Fermi level,while the normal calculated band structure implies it should be metallic without any band ***,by considering Hubbard interaction potential U,further density functional theory(DFT)calculation suggests that monolayer T-TaS_(2)could be a CDW Mott insulator,and the DFT+U calculation matches well with the ARPES *** significantly,the temperature-dependent ARPES result indicates that the CDW Mott state in the T-TaS_(2)monolayer is more robust than its bulk counterpart and can persist at room *** results reveal that the dimensional effect can enhance the CDW Mott state and provide valuable insights for further exploring the exotic properties of monolayer TaS2.

关键词： temperature monolayer state