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Assessing the impact of marketization on energy poverty

ENVIRONMENT DEVELOPMENT AND SUSTAINABILITY 2025年第4期27卷 9257-9286页

作者： Shi, Xinjie Zeng, Pei Cui, Liu Gao, xuwen Qiu, Tongwei jiang, Qiang Fu, Linlin China Acad Rural Dev Zhejiang Univ Sch Publ Affairs Hangzhou Peoples R China Zhejiang Univ Res Ctr Common Prosper Innovat Ctr Yangtze River Delta Future Reg Dev Lab Jiaxing Peoples R China Zhejiang Univ & Huzhou City Ctr Common Prosper Huzhou Peoples R China Zhejiang Univ Inst Common Prosper & Dev Hangzhou Peoples R China Nanjing Agr Univ Coll Econ & Management Nanjing Peoples R China Guangxi Univ Sci & Technol Sch Econ & Management Liuzhou Peoples R China Zhejiang Acad Agr Sci Inst Rural Dev Hangzhou Peoples R China

In conjunction with economic growth, improving the quality of life for its citizens is a central concern for the Chinese government. Energy poverty, a topic closely linked to people's quality of life, has garnered global attention. This study examines the relationship between marketization and energy poverty by constructing provincial-level panel data using the fixed effect model. To address endogeneity, the instrumental variable method is further employed. The study obtains two major findings. First, the study reveals a significant upward trend in marketization in China in recent years, with a concomitant decrease in energy poverty. Here, the causal (and negative) effects of marketization on energy poverty are identified. Second, the mechanism analysis shows that this effect operates through (i) improvements in the quantity of energy supply (rather than energy supply efficiency), (ii) the accumulation of human capital that promotes the use of clean energy, and (iii) an increase in people's income. This study makes three key contributions. First, it empirically analyzes the impact of marketization on energy poverty from a macro-perspective. Second, it systematically discusses the pathways through which marketization operates. Third, drawing on several theories, it provides a deeper understanding of the theoretical connection between marketization and energy poverty.

关键词： Energy poverty Marketization Instrumental variable China

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Cocrystals of axially N-embedded quasi-carbon nanohoops via modulating the electron affinity of guest acceptors

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SCIENCE CHINA-CHEMISTRY 2025年 1-8页

作者： Zhang, Li Qiu, Shuhai Hu, Shunlong Xu, Hanren Sun, xuwen jiang, Wei Qu, Da-Hui Wang, Zhaohui East China Univ Sci & Technol Feringa Nobel Prize Scientist Joint Res Ctr Key Lab Adv Mat & Joint Int Res Lab Precis Chem & Sch Chem & Mol EngnInst Fine ChemFrontiers Sci C Shanghai 200237 Peoples R China Tsinghua Univ Dept Chem Key Lab Organ Optoelect & Mol Engn Beijing 100084 Peoples R China

Organic donor-acceptor cocrystals of pi-conjugated molecues have shown diverse applications in materials science. However, most cocrystals exist in neutral forms dominated by pi-pi interactions, while the ionic congeners and corresponding properties are rarely studied due to difficulties in harnessing the degree of charge transfer. Herein, we report cocrystals of axially N-embedded quasi-carbon nanohoops (DPP-D and DPP-T) with electron deficient guests. By modulating the electron affinity of the acceptor guests, the electronic structures of the complexes can be tuned from neutral to ionic states. Specifically, DPP-D interacts with TCNB molecules to form neutral superstructures via intermolecular pi-pi interactions, giving rise to a deep-red emission in the solid state. In contrast, an ionic complex showing near-infrared region absorptions and paramagnetic character on account of strong charge-transfer interactions is generated when DDQ molecules are involved. Their unique properties can be explained by different degrees of charge transfer and assembly modes, which have clearly been manifested by crystal structures and theoretical calculations. Our studies provide rare examples of pi-conjugated macrocycle-based donor-acceptor cocrystals in both neutral and ionic forms, and give insight to the design of multicomponent carbon nanomaterials.

关键词： n-doped carbon nanohoop donor-acceptor cocrystal charge transfer interaction ionic state

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《齐民要术》所载传统种业技术分析

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中国科技史杂志 2017年第4期38卷 411-419页

作者：江绪文王宝卿青岛农业大学农学院青岛农业大学齐民书院

《齐民要术》是中国现存最早、保存最完整的古代农学巨著,也是世界农学史上最早、最有价值的专著之一,它的内容包含了大量的种业文化知识和技术经验。本文以其为标本,结合现代种业科技理论,较为全面地归纳、梳理了书中所载的传统种业知... 详细信息

《齐民要术》是中国现存最早、保存最完整的古代农学巨著,也是世界农学史上最早、最有价值的专著之一,它的内容包含了大量的种业文化知识和技术经验。本文以其为标本,结合现代种业科技理论,较为全面地归纳、梳理了书中所载的传统种业知识。借鉴先人种业技术经验,依托现代先进科技,对促进现代种业快速发展具有重要意义。

关键词：齐民要术种业技术种子质量

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植物内生菌防治植物寄生线虫的研究进展

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生物技术通报 2014年第9期30卷 7-12页

作者：江绪文李贺勤青岛农业大学农学与植物保护学院青岛266109

植物内生菌作为生物防治中的天然资源菌,已引起越来越多研究者的关注。从植物内生菌的分布和种类、分离培养、活性筛选、活性物质成分以及防治植物寄生线虫的作用机理几方面内容进行综述,并对植物内生菌防治植物寄生线虫的相关问题及发... 详细信息

植物内生菌作为生物防治中的天然资源菌,已引起越来越多研究者的关注。从植物内生菌的分布和种类、分离培养、活性筛选、活性物质成分以及防治植物寄生线虫的作用机理几方面内容进行综述,并对植物内生菌防治植物寄生线虫的相关问题及发展趋势进行探讨,以期为今后深入开展相关研究提供参考。

关键词：植物内生菌植物寄生线虫生物防治

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Biosynthesis and signal transduction of plant growth regulators and their effects on bioactive compound production in Salvia miltiorrhiza (Danshen)

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CHINESE MEDICINE 2024年第1期19卷 102页

作者： Li, Heqin jiang, xuwen Mashiguchi, Kiyoshi Yamaguchi, Shinjiro Lu, Shanfa Qingdao Agr Univ Coll Agron 700 Changcheng Rd Qingdao 266109 Shandong Peoples R China Kyoto Univ Inst Chem Res Uji Kyoto 6110011 Japan Chinese Acad Med Sci & Peking Union Med Coll Inst Med Plant Dev 151 Malianwa North Rd Beijing 100193 Peoples R China Shandong Bairuijia Food Co Ltd 8008 Yi Rd Yantai 261400 Shandong Peoples R China

Plant growth regulators (PGRs) are involved in multiple aspects of plant life, including plant growth, development, and response to environmental stimuli. They are also vital for the formation of secondary metabolites in various plants. Salvia miltiorrhiza is a famous herbal medicine and has been used commonly for > 2000 years in China, as well as widely used in many other countries. S. miltiorrhiza is extensively used to treat cardiovascular and cerebrovascular diseases in clinical practices and has specific merit against various diseases. Owing to its outstanding medicinal and commercial potential, S. miltiorrhiza has been extensively investigated as an ideal model system for medicinal plant biology. Tanshinones and phenolic acids are primary pharmacological constituents of S. miltiorrhiza. As the growing market for S. miltiorrhiza, the enhancement of its bioactive compounds has become a research hotspot. S. miltiorrhiza exhibits a significant response to various PGRs in the production of phenolic acids and tanshinones. Here, we briefly review the biosynthesis and signal transduction of PGRs in plants. The effects and mechanisms of PGRs on bioactive compound production in S. miltiorrhiza are systematically summarized and future research is discussed. This article provides a scientific basis for further research, cultivation, and metabolic engineering in S. miltiorrhiza.

关键词： Plant growth regulators Phenolic acids Tanshinones Salvia miltiorrhiza Danshen

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Metal-Organic Frameworks-Derived Cobalt Catalyst Supported on Biochar for Efficient Deoxygenation of Stearic Acid

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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 2025年第4期64卷 2049-2060页

作者： Zhang, xuwen Dong, Xuexue Wang, Youting Bian, Juanjuan Ali, Sajid Cai, Dongren Sun, Kang Rao, Xiaoping jiang, Jianchun Zhan, Guowu Huaqiao Univ Acad Adv Carbon Convers Technol Coll Chem Engn Xiamen 361021 Fujian Peoples R China Huaqiao Univ Fujian Prov Key Lab Biomass Low Carbon Convers Xiamen 361021 Fujian Peoples R China Chinese Acad Forestry CAF Inst Chem Ind Forest Prod Nanjing 210042 Jiangsu Peoples R China

The conversion of stearic acid into linear hydrocarbons is a crucial step in advancing sustainable biofuels and biochemicals. Herein, we developed a series of cobalt-based catalysts (referred to as Co/C@TSC) using metal-organic frameworks (MOFs) as precursors and supporting them on biochar derived from natural tung shells (TSC). Tung shells, a byproduct of the tung oil extraction process, are widely available. The as-designed Co/C@TSC catalyst effectively deoxygenated stearic acid via decarbonylation/decarboxylation (DCO x ) processes, achieving a conversion of 78.5% and hydrocarbon product selectivity of 90%, specifically heptadecane and heptadecene. Our detailed analysis showed that the addition of biochar support improved the spatial distribution of cobalt species (with a high surface concentration of Co0) and enhanced the adsorption of reactants, thus boosting catalytic activity. Additionally, in situ DRIFTS analysis confirmed that the stearic acid deoxygenation process involved the intermolecular dehydration of stearic acid molecules. Experiments with different reaction substrates revealed that the stearic anhydride was a key reaction intermediate during the deoxygenation process. This study introduces a novel catalyst made from dual carbon-supported nonprecious metals, presenting a promising method for transforming stearic acid into valuable hydrocarbon products.

关键词： Reaction intermediates

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Optimizing planting density and nitrogen application to enhance profit and nitrogen use of summer maize in Huanghuaihai region of China

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SCIENTIFIC REPORTS 2022年第1期12卷 1-9页

作者： Zhang, HaiYan Zhang, ChengRan Sun, Peng jiang, xuwen Xu, GuangHai Yang, JinZhong Qingdao Agr Univ Qingdao Peoples R China

Low planting density and irrational nitrogen (N) fertilization are two common practices in conventional cropping of smallholder maize production in Huanghuaihai region of China. A 2-year field experiment was carried out to study the effects of N application and planting density on maize phenology, dry matter accumulation, profit, yield, N uptake and efficiency indices. The experiments included three N application levels (120 kg ha(-1), N1;180 kg ha(-1), N2;240 kg ha(-1), N3) and three planting densities (60,000 plants ha(-1), D1;75,000 plants ha(-1), D2;90,000 plants ha(-1), D3). Increasing N input and planting density delayed the physiological maturity and enhanced dry matter accumulation. Comparing with the traditional N3 level, grain yield and profit were kept stable at N2 level and decreased at N1 level, partial factor productivity of applied N (PFPN) and nitrogen efficiency ratio (NER) were increased with the decreasing of N level. Comparing with the traditional D1 density, grain yield, profit and PFPN were increased at D2 density and then kept stable at D3 density, NER was kept stable at D2 density and then decreased at D3 density. Based on the predicted maximum profit, the optimal combinations of N application and planting density were 199 kg ha(-1) and 81,081 plants ha(-1) in 2017, and 205 kg ha(-1) and 84,782 plants ha(-1) in 2018. The two optimal combinations had an increase of 17.6% for grain yield, 39.8% for PEPN, 3.6% for NRE than the traditional N3D1 treatment. Therefore, an appropriate combination of increased planting density with reduced N application could enhance profit and nitrogen use of summer maize in Huanghuaihai region of China.

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Size and Charge Dual-Switchable Nanoparticles for Achieving Chemosensitization and Immune Infiltration against Pancreatic Ductal Adenocarcinoma

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ADVANCED FUNCTIONAL MATERIALS 2025年第1期35卷

作者： Song, Haolin Chen, Hongyi Chen, Qinjun Fan, Hongrui Li, Chufeng Wang, Yu Zhang, Shilin Li, xuwen Su, Boyu Sun, Tao jiang, Chen Fudan Univ Sch Pharm Dept Pharmaceut Key Lab Smart Drug DeliveryMinist EducState Key Shanghai 201203 Peoples R China MOE Frontiers Ctr Brain Sci Shanghai 201203 Peoples R China Fujian Med Univ Affiliated Hosp 1 Natl Reg Med Ctr Dept Digest Dis Binhai Campus Fuzhou 350212 Peoples R China

Pancreatic ductal adenocarcinoma (PDAC), one of the most challenging cancers, is uniquely characterized by a biological barrier composed of multiple components in the extracellular matrix, preventing penetration of chemotherapeutic agents and hindering clinical drug treatment. Collagen I arrangement is critical. In this study, gemcitabine is chosen as the chemotherapeutic agent and dasatinib as the collagen-I-disrupting agent. When collagen I arrangement is disrupted, not only the chemotherapeutic drug enters the tumor area better, but the infiltration of CD8+ T cells into the tumor also increases. Therefore, a hypoxia-responsive linker-crosslinked polymer, DGD/L@GBI, is designed, which can be simultaneously loaded with two therapeutic agents, gemcitabine and dasatinib. The polymer is encapsulated by nucleic acid aptamers that target the PDAC stromal microenvironment and shield the surface. The aptamer is removed upon arrival at the PDAC hypoxic microenvironment, exposing the positively charged core to achieve charge reversal. Particle size transformation is achieved using linkers that respond to a hypoxic microenvironment. Increased intratumoral penetration is achieved using the dual transformation capabilities of the formulation. Pairing these two agents can result in a powerful efficacy in chemotherapy sensitization and immune infiltration.

关键词： charge reversal chemosensitization immune infiltration pancreatic ductal adenocarcinoma size reduction

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城市绿化工程苗木种植与养护技术研究

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现代工程科技 2023年第3期2卷 70-73页

作者：蒋绪稳湖南松雅建设集团有限公司湖南长沙410000

城市绿化是优化城市生态环境,提升城市形象,创建美好宜居环境的一项重要举措。落实高标准建设,高效能管理,应采用科学的方法进行绿化苗木的种植与养护管理。基于经验总结和实地考察,分析当下城市绿化施工与养护管理现状,并通过绿化苗木... 详细信息

城市绿化是优化城市生态环境,提升城市形象,创建美好宜居环境的一项重要举措。落实高标准建设,高效能管理,应采用科学的方法进行绿化苗木的种植与养护管理。基于经验总结和实地考察,分析当下城市绿化施工与养护管理现状,并通过绿化苗木种植与后期养护管理技术进行分析与整理。阐述城市绿化工程从施工准备阶段、苗木栽植阶段及后期管养阶段实施质量控制要点与保障措施,旨在为关注行业领域的人士提供一些可行性较高的参考意见。

关键词：市政工程城市绿化苗木种植养护管理

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抗坏血酸对铜胁迫下广藿香幼苗生长、铜积累和抗氧化酶活性的影响

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环境化学 2016年第7期35卷 1431-1437页

作者：李贺勤王维华江绪文青岛农业大学农学与植物保护学院/山东省旱作农业技术重点实验室青岛266109

通过室内水培试验,研究了外源添加抗坏血酸(Ascorbic acid,As A)对铜(Copper,Cu)胁迫下广藿香(Pogostemon cablin(Blanco)Benth.)幼苗生长、Cu^(2+)积累和抗氧化酶活性的影响.结果显示,与对照相比,10—80μmol·L-1Cu^(2+)降低了广... 详细信息

通过室内水培试验,研究了外源添加抗坏血酸(Ascorbic acid,As A)对铜(Copper,Cu)胁迫下广藿香(Pogostemon cablin(Blanco)Benth.)幼苗生长、Cu^(2+)积累和抗氧化酶活性的影响.结果显示,与对照相比,10—80μmol·L-1Cu^(2+)降低了广藿香幼苗的苗长、根长、植株生物量和根系耐性指数,且随Cu^(2+)浓度增大抑制作用增强.与Cu^(2+)胁迫相比,外源添加0.10—0.50 mmol·L^(-1)As A提高了广藿香幼苗的苗长、根长、植株生物量、根系耐性指数、根系活力以及SOD、POD、CAT和APX酶活性,降低其根系相对电导率、MDA含量和Cu^(2+)含量;随As A浓度的增加,苗长、根长、植株生物量、根系耐性指数、根系活力以及POD和CAT活性先升高后下降,相对电导率、MDA含量和Cu^(2+)含量先下降后上升,SOD和APX活性则一直增加.结果显示,外源添加0.25 mmol·L^(-1)的As A能提高广藿香幼苗细胞清除活性氧的能力,一定程度上缓解40μmol·L^(-1)Cu^(2+)胁迫对膜系统的伤害,减轻Cu^(2+)胁迫对广藿香幼苗生长的毒害作用.

关键词：广藿香铜胁迫抗坏血酸幼苗生长抗氧化酶

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