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Using petroleum/biomass refineryconcepts to develop technologies for in-situ upgrading of heavy petroleum 认领 引用
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作者 Vicente Samano Jorge Ancheyta +2 位作者 Guillermo Felix Alexis Tirado Mikhail A.Varfolomeev 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2026年第2期372-379,共8页
New opportunities to use ex-situ upgrading technologies currently in commercial application or in development for petroleum refineriesand biomass conversion were identifiedto be applied for in situ upgrading of heavy ... New opportunities to use ex-situ upgrading technologies currently in commercial application or in development for petroleum refineriesand biomass conversion were identifiedto be applied for in situ upgrading of heavy crude oils.The following technologies were recognized:in situ catalytic gasification to produce hydrogen uses similar concept than catalytic gasificationof biomass,catalytic aquathermolysis with hydrogen donors mimics the visbreaking of petroleum residue with hydrogen donors,and the use of supercritical water with or without catalyst for in situ applications is based on hydrogenation reactions with supercritical fluids.The viscosity reduction of heavy oils through catalytic aquathermolysis varies depending on the catalysts used and reaction conditions,which has been reported to be of up to 74%,and adding hydrogen donor can further increase to 85%.Various advantages and disadvantages were identifiedand discussed for in situ technologies,particularly the inhibition of coke formation,the degree of heavy crude oil upgrading,the requirement of surface facilities,the design of catalysts,and the investment and operating costs. 展开更多
关键词 In-situ upgrading Ex-situ upgrading Heavy crude oil
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Plasma promotion of CO2methanation at low temperature:Validation of nonthermal effect on large-scale biogas upgrading 认领 引用
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作者 Wenjun Zhang Takehisa Mimbu +3 位作者 Dae-Yeong Kim Shinya Furukawa Hyun-Ha Kim Tomohiro Nozaki 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2026年第4期858-867,I0020,共10页
Methanation of CO2in biogas offers an efficient and sustainable pathway compared to the carbon sources from carbon capture and utilization/storage(CCU/CCS)technologies,as it avoids a separate CO2capture step.Mor... Methanation of CO2in biogas offers an efficient and sustainable pathway compared to the carbon sources from carbon capture and utilization/storage(CCU/CCS)technologies,as it avoids a separate CO2capture step.Moreover,CO2from biogas combustion does not need to be recycled,owing to the carbon-neutral nature of biogas as a renewable energy source.Herein,we report biogas methanation using plasma catalysis for the first time in a packed-bed dielectric barrier discharge(DBD)reactor over 6 wt%-Ni/γ-Al2O3.The total gas flow rate reached up to 3000 mL min-1(CH4/CO2=60/40,CO2/H2=1/4),representing a large-scale study.The respective contributions of nonthermal plasma and methanation reaction heat were clarified.We observed that plasma-generated reactive species—vibrationally excited CO2and plasma-derived atomic hydrogen(PDAH)—play a crucial role.These species enhance CH4yield at low temperature and decrease reaction onset temperature(Ton)compared to thermal catalysis.Also,pseudo-autonomous operation was confirmed at a total gas flow of 3000 mL min-1and DBD power of 11 W with CO2conversion of 77%,CH4selectivity>98%,and energy efficiency of 75%.Moreover,pulsed CH4injection experiments demonstrated that they endow the reaction system with the ability to withstand external disturbances,such as fluctuation of CH4content in biogas.These results demonstrate the feasibility and high efficiency of plasma-catalyzed biogas methanation.Moreover,a high flexibility of DBD makes it particularly suitable for upgrading decentralized or stranded biogas resources. 展开更多
关键词 Biogas upgrading Methanation Plasma catalysis Dielectric barrier discharge Transient reaction analysis Autonomous reaction
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Highly efficient upgrading of 1-butanol into 2-ethyl-1-hexanol catalyzed by nickel pincer complexes 认领 引用
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作者 Xintao Zhu Qiuling Xia +1 位作者 Yue Hu Yinjun Xie 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 2026年第5期368-374,共7页
The Guerbet reaction of biomass-derived 1-butanol offers a sustainable route to valuable 2-ethyl-1-hexanol(2-EH),yet faces significant challenges,including low conversions,poor selectivity and reliance on noble metal ... The Guerbet reaction of biomass-derived 1-butanol offers a sustainable route to valuable 2-ethyl-1-hexanol(2-EH),yet faces significant challenges,including low conversions,poor selectivity and reliance on noble metal catalysts and additional solvents.Herein,we report a highly efficient nickel pincer-catalyzed system that achieves new records of 86%1-butanol conversion and 80%2-EH yield.This constitutes the first homogeneous non-noble metal catalyst for 1-butanol upgrading to higher alcohols with both high conversion and high TON.Furthermore,the protocol demonstrates broad applicability,enabling selective valorization of diverse alcohol feedstocks to their elongated counterparts. 展开更多
关键词 1-Butanol upgrading Nickel pincer complex 2-Ethyl-1-hexanol Guerbet process Homogeneous catalysis
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Risk factors for pathological upgrading pre-and post-endoscopic resection of colorectal adenoma:A retrospective study 认领 引用
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作者 Xu-Lin Zheng Tao Chen +6 位作者 Yang Yu Neng Wang Biao Jiang Yao Yao Yun-Fei Zhao Xin-Xin Yu Chun-Lin Su 《World Journal of Translational Medicine》 2026年第2期79-86,共8页
BACKGROUND Colorectal adenoma(CRA)is a precancerous lesion of colorectal cancer.Pathological upgrading often occurs when comparing preoperative endoscopic biopsy results with postoperative pathological findings in cer... BACKGROUND Colorectal adenoma(CRA)is a precancerous lesion of colorectal cancer.Pathological upgrading often occurs when comparing preoperative endoscopic biopsy results with postoperative pathological findings in certain adenomas.AIM To investigate the risk factors associated with pathological upgrading after endoscopic resection of CRAs.METHODS This retrospective study collected 200 cases of CRAs between January 2023 and December 2025.All adenomas underwent complete endoscopic resection and were divided into pathological upgrading and non-upgrading groups according to postoperative pathological findings.Baseline clinical data and endoscopic features of the adenomas were compared between the two groups to identify factors correlated with pathological upgrading.RESULTS Pathological upgrading was observed in 49 of the 200 included CRAs.No statistically significant differences were found between the two groups in age,gender,body mass index,smoking history,drinking history,diabetes history,personal tumor history,fasting blood glucose level,total cholesterol level,triglyceride level,platelet count,carcinoembryonic antigen level,and adenoma location.Significant intergroup differences were observed in hemoglobin level,adenoma diameter,Yamada classification,and mucosal hyperemia.Multivariate logistic regression analysis demonstrated that pathological upgrading incidence was significantly higher in adenomas with a diameter>20 mm than in those≤20 mm(odds ratio=23.237,95%CI:5.868-92.018,P20 mm are more susceptible to pathological upgrading and carry an elevated risk of undetected high-grade dysplasia or early carcinoma missed by preoperative biopsy. 展开更多
关键词 Colorectal adenoma Colorectal cancer Pathological upgrading Endoscopic resection Risk factor Retrospective study
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Digital Economy Enabling Industrial Structure Upgrading:The Mediating Role of Human Capital and Regional Heterogeneity 认领 引用
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作者 Yue Deng 《Proceedings of Business and Economic Studies》 2026年第6期211-223,共13页
As a key driver of high-quality economic development in the new era,the mechanism through which the digital economy influences industrial structure upgrading warrants in-depth investigation.Based on panel data from 31... As a key driver of high-quality economic development in the new era,the mechanism through which the digital economy influences industrial structure upgrading warrants in-depth investigation.Based on panel data from 31 provinces,autonomous regions,and municipalities directly under the central government in China from 2011 to 2021,this study employs a two-way fixed effects model to systematically examine the impact of the digital economy on the advancement and rationalization of industrial structure,with a particular focus on the mediating role of human capital and regional heterogeneity.The main findings are as follows:(1)The development of the digital economy significantly promotes both the advancement and rationalization of industrial structure.This conclusion remains robust after a series of robustness checks,including variable substitution.(2)Human capital accumulation serves as an important transmission channel through which the digital economy drives industrial structure upgrading,exhibiting a significant partial mediating effect.Specifically,the digital economy indirectly facilitates industrial structure optimization by enhancing the level of human capital.(3)There is notable regional heterogeneity in the impact of the digital economy on industrial structure upgrading.Compared with the eastern region,the digital economy exerts a more pronounced positive effect on industrial structure upgrading in the central and western regions,suggesting that these regions possess greater potential for industrial structure optimization through digital empowerment.This study provides novel empirical evidence for understanding the intrinsic relationship between the digital economy and industrial structure upgrading,and offers policy insights for tailoring digital economy development strategies to local conditions to accelerate industrial structure optimization and upgrading. 展开更多
关键词 Digital economy Industrial structure upgrading Human capital Mediating effect Regional heterogeneity
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Research on China’s Export Upgrading Path Under the Reconstruction of Global Value Chains 认领 引用
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作者 Meiyun Wang 《Proceedings of Business and Economic Studies》 2026年第4期19-26,共8页
Against the backdrop of deglobalization,intensifying geopolitical conflicts,the digital technology revolution and the deep advancement of the green transition,the global value chain(GVC)is undergoing profound“re-glob... Against the backdrop of deglobalization,intensifying geopolitical conflicts,the digital technology revolution and the deep advancement of the green transition,the global value chain(GVC)is undergoing profound“re-globalization”restructuring.It is shifting from“efficiency first”toward resilience,sustainability and inclusiveness,with increasingly prominent features of regionalization,digitalization and greening.As the world’s largest trading nation in goods,China’s exports have long been locked in the low-and mid-end segments of GVCs,facing multiple challenges,including core technology bottlenecks,insufficient adaptation to trade rules,and weak industrial and supply chain resilience.This paper systematically analyzes the core characteristics and driving forces of GVC reconstruction,examines the current status,achievements and prominent bottlenecks of China’s export upgrading,and proposes targeted export upgrading paths from five dimensions.It aims to provide theoretical references and practical guidance for China’s exports to break through low-end lock-in,achieve high-quality development,and deeply integrate into GVC restructuring. 展开更多
关键词 Reconstruction of global value chains Export upgrading Value chains Digital trade
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Pathways for Transforming and Upgrading the Tourism Economy in Zhejiang Province under the Innovative Development Initiative of the Cultural Tourism Market 认领 引用
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作者 Zhenzi GUO 《Asian Agricultural Research》 2026年第5期15-18,22,共4页
This paper examines the tourism economy of Zhejiang Province,exploring the pathways and mechanisms for its transformation and upgrading under the initiative of innovative development in the cultural and tourism market... This paper examines the tourism economy of Zhejiang Province,exploring the pathways and mechanisms for its transformation and upgrading under the initiative of innovative development in the cultural and tourism market.In 2024,Zhejiang's tourism revenue reached 827.5 billion yuan,surpassing that of Hunan Province,the second-ranked region,by 1.3 billion yuan,ranking first in China.The study finds that despite its leading scale,Zhejiang's tourism economy still faces challenges such as product homogenization,insufficient digital integration,and inadequate regional coordination.Guided by the concepts of cultural-tourism integration and innovation-driven development,this paper proposes an integrated transformation framework based on four dimensions:digital empowerment,business convergence,policy synergy,and brand enhancement.Specific strategies are also outlined,including the development of smart cultural tourism,cultural-tourism IP creation,cross-regional cooperation,and international marketing.The research provides theoretical insights and practical references for promoting high-quality development of the tourism economy in Zhejiang Province and across China. 展开更多
关键词 Cultural tourism market Innovative development Tourism economy Transformation and upgrade Zhejiang Province
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Metallic cobalt mediated molybdenum nitride for efficient glycerol upgrading with water electrolysis 认领 引用 被引量：2
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作者 Yiming Guo Zhouhong Yu +1 位作者 Bin He Pengzuo Chen 《Chinese Chemical Letters》 SCIE CAS CSCD 2025年第9期589-594,共6页
Integrating electrochemical upgrading of glycerol and water electrolysis is regarded as a promising and energy-saving approach for the co-production of chemicals and hydrogen.However,developing efficient electrocataly... Integrating electrochemical upgrading of glycerol and water electrolysis is regarded as a promising and energy-saving approach for the co-production of chemicals and hydrogen.However,developing efficient electrocatalyst towards this technology remains challenging.Herein,a metallic cobalt mediated molybdenum nitride heterostructural material has been exploited on nickel foam(Co@Mo2N/NF)for the glycerol oxidation reaction(GOR)and hydrogen evolution reaction(HER).Remarkably,the obtained Co@Mo2N/NF realizes eminent performance with low overpotential of 49 mV at 50 mA/cm2for HER and high Faradaic efficiency of formate of 95.03%at 1.35 V vs.RHE for GOR,respectively.The systematic in-situ experiments reveal that the Co@Mo2N heterostructure promotes the cleavage of C-C bond in glycerol by active CoOOH species and boosts the conversion of glycerol to aldehyde intermediates to formate product.Moreover,the density functional theory(DFT)calculations confirm the strong interaction at Co@Mo2N interface,which contributes to the optimized water dissociation and the transformation of H*to H2.Benefiting from those advantages,the built HER||GOR electrolyzer delivers a low voltage of 1.61 V at 50 mA/cm2,high Faradaic efficiency,and robust stability over 120 h for sustained and stable electrolysis. 展开更多
关键词 Metallic Co Molybdenum nitride Heterostructure Glycerol upgrading Water electrolysis
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Impact of heterogeneity of sanitary and phytosanitary measures on the upgrading of agricultural global value chains 认领 引用
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作者 DONG Yin-guo YANG Zun-rong SHAN Zhan-yao 《Ecological Economy》 2025年第3期202-213,共12页
With the deepening of international agricultural division of labor,trade methods have shifted from traditional bilateral trade to agricultural global value chain(AGVC)trade.Sanitary and Phytosanitary(SPS)measures are ... With the deepening of international agricultural division of labor,trade methods have shifted from traditional bilateral trade to agricultural global value chain(AGVC)trade.Sanitary and Phytosanitary(SPS)measures are a crucial factor affecting agricultural trade and a key variable in AGVC governance.This paper,based on the 2012-2020 University of International Business and Economics Global Value Chain Index(UIBE GVC Index)and the United Nations Conference on Trade and Development Non-Tariff Measures Database(UNCTAD NTMs Database),measures the structural heterogeneity and breadth heterogeneity of SPS measures.It also constructs mathematical models and fixed-effects models to explore the impact of SPS heterogeneity on AGVC upgrading.The findings reveal that the heterogeneity of SPS measures exerts a significant inhibitory effect on the upgrading of agricultural global value chains.Moreover,compared to developed countries,a reduction in SPS measures’heterogeneity demonstrates a more pronounced positive impact on AGVC upgrading in developing countries. 展开更多
关键词 Sanitary and Phytosanitary measures heterogeneity agriculture domestic value added in exports agricultural global value chain upgrading
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Recent developments in the utilization of unconventional resources:A focus on partial upgrading techniques and sustainability of Canadian Oil sand bitumen 认领 引用 被引量：4
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作者 Moataz K.Abdrabou Xue Han +1 位作者 Yimin Zeng Ying Zheng 《Resources Chemicals and Materials》 2025年第1期88-109,共22页
To satisfy the increasing global energy demand,while searching for new energy sources,it’s important to take a closer look at the resources already at our disposal and optimize their use.This comprehensive review exp... To satisfy the increasing global energy demand,while searching for new energy sources,it’s important to take a closer look at the resources already at our disposal and optimize their use.This comprehensive review explores the evolving landscape of unconventional oil resources,focusing on the environmental and economic implica-tions of bitumen partial upgrading technologies,particularly within the Canadian context.With over 55%of the world’s oil reserves comprising of unconventional oil,which includes extra-heavy oil and oil sand bitumen,there is a growing trend to shift from traditional oil sources to these abundant yet under-utilized reserves.This review delves into the challenges and advancements in bitumen partial upgrading,highlighting the latest technologies in thermal cracking,hydrocracking,catalytic cracking,and innovative methods like surfactant integration,cavi-tation,microwave,and plasma-assisted upgrading.It also discusses the environmental implications and eco-nomic feasibility of these technologies,emphasizing the necessity for sustainable and cost-effective solutions at petroleum field sites.Furthermore,the report introduces the transformative concept of Bitumen Beyond Com-bustion(BBC),which explores the non-combustion uses of bitumen and its asphaltene fraction in manufacturing high-value carbon-based products.These novel approaches align with global sustainability goals,offering the potential for significant reductions in greenhouse gas emissions and new routes to diversify the economic ap-plications of bitumen.The review then concludes with an assessment of current challenges and future research directions,advocating for a balanced approach that harmonizes technological innovation,environmental stewardship,and economic viability in the field of bitumen upgrading. 展开更多
关键词 Bitumen upgrading Unconventional oil resources Environmental sustainability Advanced material production
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Atomic vacancy engineering of Co(OH)F nanoarray toward high-performance ammonia electrosynthesis with waste plastics upgrading 认领 引用 被引量：1
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作者 Mingdan Wang Qianyu Zhang +4 位作者 Kun Chen Cong Lin Huigang Wang Yanying Zhao Pengzuo Chen 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2025年第10期558-565,共8页
Developing energy-efficient nitrite-to-ammonia(NO2RR)conversion technologies while simultaneously enabling the electrochemical upcycling of waste polyethylene terephthalate(PET)plastics into highvalue-added chemica... Developing energy-efficient nitrite-to-ammonia(NO2RR)conversion technologies while simultaneously enabling the electrochemical upcycling of waste polyethylene terephthalate(PET)plastics into highvalue-added chemicals is of great significance.Herein,an atomic oxygen vacancy(Vo)engineering is developed to optimize the catalytic performance of Vo2-Co(OH)F nanoarray towards the NO2RR and PET-derived ethylene glycol oxidation reaction(EGOR).The optimal Vo2-Co(OH)F achieves an ultralow operating potential of -0.03 V vs.RHE at -100 mA cm-2and a remarkable NH3Faradaic efficiency(FE)of 98.4% at -0.2 V vs.RHE for NO2RR,and a high formate FE of 98.03% for EGOR.Operando spectroscopic analysis and theoretical calculations revealed that oxygen vacancies play a crucial role in optimizing the electronic structure of Vo2-Co(OH)F,modulating the adsorption free energies of key reaction intermediates,and lowering the reaction energy barrier,thereby enhancing its overall catalytic performance.Remarkably,the Vo2-Co(OH)F-based NO2RR||EGOR electrolyzer realized high NH3and formate yield rates of 33.9 and 44.9 mg h-1cm-2at 1.7 V,respectively,while demonstrating outstanding long-term stability over 100 h.This work provides valuable insights into the rational design of advanced electrocatalysts for co-electrolysis systems. 展开更多
关键词 Atomic vacancy Co(OH)F Nanoarray Ammonia electrosynthesis Waste plastics upgrading Co-electrolysis system
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Rational design of oxygen vacancy-rich self-supporting NiCo(OH)2electrode for efficient biomass upgrading 认领 引用
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作者 Diexin Xie Jiabin Chen +4 位作者 Jingxin Hou Fangfang Yang Runping Feng Changsheng Cao Zailai Xie 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2025年第9期558-566,I0015,共9页
Transition metal-based electrocatalysts are a promising alternative to noble metal catalysts for electrochemical upgrading of biomass-derived 5-hydroxymethylfurfural(HMF)into high-value 2,5-furandicarboxylic acid(FDCA... Transition metal-based electrocatalysts are a promising alternative to noble metal catalysts for electrochemical upgrading of biomass-derived 5-hydroxymethylfurfural(HMF)into high-value 2,5-furandicarboxylic acid(FDCA).However,the rational design of efficient electrocatalysts with precisely tailored structure-activity correlations remains a critical challenge.Herein,we report a hierarchically structured self-supporting electrode(Vo-NiCo(OH)2-NF)synthesized through in situ electrochemical reconstruction of NiCo-Prussian blue analogue(NiCo-PBA)precursor,in which oxygen vacancy(Vo)-rich Co-doped Ni(OH)2nanosheet arrays are vertically aligned on nickel foam(NF),creating an interconnected conductive network.When evaluated for the HMF oxidation reaction(HMFOR),Vo-NiCo(OH)2-NF exhibits exceptional electrochemical performance,achieving near-complete HMF conversion(99%),ultrahigh FDCA Faradaic efficiency(97.5%),and remarkable product yield(96.2%)at 1.45 V,outperforming conventional Co-doped Ni(OH)2(NiCo(OH)2-NF)and pristine Ni(OH)2(Ni(OH)2-NF)electrodes.By combining in situ spectroscopic characterization and theoretical calculations,we elucidate that the synergistic effects of Co-doping and oxygen vacancy engineering effectively modulate the electronic structure of Ni active centers,favor the formation of high-valent Ni3+species,and optimize HMF adsorption,thereby improving the HMFOR performance.This work provides valuable mechanistic insights for catalyst design and may inspire the development of advanced transition metal-based electrodes for efficient biomass conversion systems. 展开更多
关键词 Biomass upgrading Hierarchical structure Oxygen vacancy Transition metal-based electrodes Electrolysis
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Steering K/C dual sites to orient Lewis acid/oxygen species for photo-upgrading of biomass sugars into lactic acid 认领 引用
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作者 Qi-Zhi Luo Jin-Shu Huang +5 位作者 Teng-Yu Liu Ji-Li Yuan Artem S.Belousov Sheng-Kun Li Song Yang Hu Li 《Rare Metals》 SCIE EI CAS CSCD 2025年第5期3218-3233,共16页
Photocatalytic selective synthesis of lactic acid(LA)from biomass sugars with a single heterogeneous catalyst is promising but challenging due to the multiple reaction steps involved.Herein,a K-doped C-rich red polyme... Photocatalytic selective synthesis of lactic acid(LA)from biomass sugars with a single heterogeneous catalyst is promising but challenging due to the multiple reaction steps involved.Herein,a K-doped C-rich red polymerized carbon nitride(RPCN)photocatalyst with uniform K/C dual sites was constructed by a molten salt template method,which was highly efficient for cascade isomerization dehydration of glucose to LA with>90%selectivity under visible light and gentle conditions.Control experiments and theoretical calculations expounded that the introduced K/C dual sites could improve the light capture ability and photogenerated charge separation efficiency,while the K species provided sufficient Lewis acid sites(adsorption sites)for the isomerization of glucose to fructose.Meanwhile,the introduced C sites that substitute N atoms could promote electrons to be captured by adsorbed oxygen for selective generation of superoxide radicals,which was highly efficient for the scission of the C3-C4 bond in fructose,exclusively furnishing LA.Importantly,the RPCN photocatalyst was also suitable for the photocatalytic upgrading of various biomass saccharides into LA with high yields of 81.3%-95.3%and could be recycled for five consecutive cycles.The tailored construction of dual sites by localization of space charge lightens an avenue for multi-step conversion of biomass with pronounced selectivity. 展开更多
关键词 K-doped carbon nitride Biomass conversion Photocatalytic upgrading Lactic acid Tandem reaction
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Sensation-thinking-simulacrum-construction:Upgrading path of sustainable design driven by modern artificial intelligence 认领 引用
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作者 GAO Yun-ting 《Ecological Economy》 2025年第4期380-400,共21页
Artificial intelligence(AI)is moving toward a new stage in its generalized development.To explain the upgrading path of sustainable design driven by AI can provide a certain basis and support for its application in de... Artificial intelligence(AI)is moving toward a new stage in its generalized development.To explain the upgrading path of sustainable design driven by AI can provide a certain basis and support for its application in design.Based on research into modern intelligence technology and design practices,this article(1)focuses on AI+,by means of relational comparisons and hierarchical structure analysis;(2)studies the value-added effect and new characteristics exhibited by the content,method,process,form,effect,and other aspects of design under the concept of sustainability;and(3)explores the upgrading mode and technological application of sustainable design,whose development is obviously influenced by the new generation of intelligence technology,through the upgrading paths of sensation,thinking,simulacrum,and construction.The continuous integration of sustainable design and AI is a trend that will endow the design process and designed objects with intelligent functions and multiple characteristics from the dimensions of cognition,thought,expression,and action.New tools and subjects will profoundly affect the value creation of design in the dimensions of environment,economy,and society. 展开更多
关键词 sustainable design artificial intelligence technology application upgrading
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ESG rating and transformation upgrading of enterprises:An empirical test based on the heterogeneity of listed A-share enterprises 认领 引用
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作者 WEI Yu-xin LI Peng-yu +1 位作者 LI Yan CHEN Xi-meng 《Ecological Economy》 2025年第1期48-65,共18页
ESG(Environmental,Social,and Governance)performance has emerged as a central metric in assessing corporate sustainability.Utilizing ESG rating data for A-share listed companies on the Shanghai Stock Exchange spanning ... ESG(Environmental,Social,and Governance)performance has emerged as a central metric in assessing corporate sustainability.Utilizing ESG rating data for A-share listed companies on the Shanghai Stock Exchange spanning from 2019 to 2022,coupled with measures of corporate transformation and upgrading,this study introduces green innovation as a mediating variable to dissect the impact of ESG ratings on corporate transformation and upgrading.The key findings of this research are as follows:(1)ESG ratings positively influence corporate transformation and upgrading,a conclusion that retains robustness after a comprehensive series of tests and discussions on endogeneity.(2)Mechanism analysis reveals that ESG ratings foster corporate transformation and upgrading by enhancing corporate green innovation.(3)In comparison with other industries,the influence of ESG ratings on corporate transformation and upgrading is notably more pronounced among heavily polluting industries among listed companies in China.Additionally,ESG ratings exhibit a more significant promotional effect on non-state-owned enterprises compared to state-owned enterprises.Larger enterprises play a more substantial role in transformation and upgrading than small and medium-sized enterprises.The promotional effect of ESG ratings is more evident in enterprises with poor information disclosure quality.Furthermore,as media attention increases,so does the impact of ESG ratings on corporate transformation.This study offers valuable policy insights from the ESG rating perspective,aiming to propel corporate transformation and upgrading,thereby contributing to economic high-quality and sustainable development. 展开更多
关键词 ESG rating enterprise transformation and upgrading heterogeneity analysis
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Mechanism and Implementation Panths of Low-Altitude Economy in Promoting Transformation and Upgrading of Tourism Industry in Zhejiang Province 认领 引用
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作者 Zhenzi GUO 《Asian Agricultural Research》 2025年第8期13-15,26,共3页
Taking Zhejiang Province as an example,this paper explores the mechanisms and implementation pathways through which the low-altitude economy drives the transformation and upgrading of the tourism industry.It finds tha... Taking Zhejiang Province as an example,this paper explores the mechanisms and implementation pathways through which the low-altitude economy drives the transformation and upgrading of the tourism industry.It finds that the low-altitude economy can effectively promote the development of high-end and diversified tourism in Zhejiang by innovating tourism formats,optimizing resource allocation,and enhancing tourist experiences.Besides,it analyzes the current development status of the low-altitude economy in Zhejiang and its potential for integration with tourism,revealing specific enabling pathways for tourism transformation,including low-altitude sightseeing,aviation tourism,and low-altitude sports.Finally,it proposes policy recommendations such as strengthening policy support,enhancing infrastructure development,and cultivating market entities.The findings aim to provide theoretical references and practical guidance for the high-quality development of tourism in Zhejiang Province. 展开更多
关键词 Low-altitude economy Transformation and upgrading of the tourism industry Action mechanism Implementation path Zhejiang Province
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Transcript of Central and Eastern European Agricultural Products Entering China:Steady Growth in Scale,Structural Upgrading and Potential 认领 引用
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作者 Qiu Liping Gu Wenbo 《China's Foreign Trade》 2025年第6期28-29,共2页
Agriculture is one of the core areas of economic development in Central and Eastern European countries(CEEC).Since the launch of the cooperation between China and Central and Eastern European countries(China-CEEC Coop... Agriculture is one of the core areas of economic development in Central and Eastern European countries(CEEC).Since the launch of the cooperation between China and Central and Eastern European countries(China-CEEC Cooperation)in 2012,agricultural trade has become a pillar of bilateral pragmatic cooperation.Expanding agricultural exports to China has always been the key demand of CEEC. 展开更多
关键词 agricultural exports economic development China CEEC cooperation structural upgrading central eastern european countries agricultural trade
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Comprehensive Evaluation of RDV® Technology for Enhanced Oil Recovery (EOR) and In-situ Upgrading of Extra-Heavy Crude in the Boscán Field, Venezuela 认领 引用
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作者 William Jiménez C. David Martucci U. 《Journal of Energy and Power Engineering》 2025年第5期180-190,共11页
The chemical technology RDV®(Vasoactive Dynamic Reactor)demonstrated a highly effective dual mechanism for the treatment of extra-heavy crude oils,combining in-situ upgrading and EOR(enhanced oil recovery).Applie... The chemical technology RDV®(Vasoactive Dynamic Reactor)demonstrated a highly effective dual mechanism for the treatment of extra-heavy crude oils,combining in-situ upgrading and EOR(enhanced oil recovery).Applied to the Boscán Field(API 9.6°),characterized by extreme viscosities(>25,000 cP),RDV®achieved a 74%reduction in viscosity(down to 6,500 cP),a 50%increase in API gravity(up to 14.4°),and an additional oil recovery of 12.2-15%,along with a 20%increase in effective oil permeability.The mechanism is based on protonation and carbocation formation,following the principles of Olah(Nobel Prize 1993)and quantum proton tunneling effects,inducing an irreversible molecular transformation via selectiveβ-scission.Chromatographic analysis revealed a significant reduction in heavy fractions(C36+),confirming preferential molecular cracking.Core flooding tests validated the complete preservation of reservoir mineralogy(XRD(X-Ray Diffraction))and intermediate wettability(stable Amott index),confirming the safety of field-scale application.The operational benefits,in comparative terms,include an approximate 40%reduction in steam-assisted pumping temperature-when steam is used-which decreases surface thermal demand and improves energy efficiency,as well as an approximate 60%reduction in diluent consumption,when diluent is required.These benefits,together with the ROI(return on investment),position RDV®as a disruptive,scalable,and environmentally sustainable solution for the transformation of extra-heavy crude oils. 展开更多
关键词 EOR extra-heavy crude Boscán Field RDV®technology carbocations in-situ upgrading quantum tunneling reservoir integrity
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Development and validation of a predictive model for the pathological upgrading of gastric low-grade intraepithelial neoplasia 认领 引用 被引量：2
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作者 Kun-Ming Lyu Qian-Qian Chen +4 位作者 Yi-Fan Xu Yao-Qian Yuan Jia-Feng Wang Jun Wan En-Qiang Ling-Hu 《World Journal of Gastroenterology》 SCIE CAS 2025年第11期63-73,共11页
BACKGROUND The discrepancy between endoscopic biopsy pathology and the overall pathology of gastric low-grade intraepithelial neoplasia(LGIN)presents challenges in developing diagnostic and treatment protocols.AIM To ... BACKGROUND The discrepancy between endoscopic biopsy pathology and the overall pathology of gastric low-grade intraepithelial neoplasia(LGIN)presents challenges in developing diagnostic and treatment protocols.AIM To develop a risk prediction model for the pathological upgrading of gastric LGIN to aid clinical diagnosis and treatment.METHODS We retrospectively analyzed data from patients newly diagnosed with gastric LGIN who underwent complete endoscopic resection within 6 months at the First Medical Center of Chinese People’s Liberation Army General Hospital between January 2008 and December 2023.A risk prediction model for the pathological progression of gastric LGIN was constructed and evaluated for accuracy and clinical applicability.RESULTS A total of 171 patients were included in this study:93 patients with high-grade intraepithelial neoplasia or early gastric cancer and 78 with LGIN.The logistic stepwise regression model demonstrated a sensitivity and specificity of 0.868 and 0.800,respectively,while the least absolute shrinkage and selection operator(LASSO)regression model showed sensitivity and specificity values of 0.842 and 0.840,respectively.The area under the curve(AUC)for the logistic model was 0.896,slightly lower than the AUC of 0.904 for the LASSO model.Internal validation with 30%of the data yielded AUC scores of 0.908 for the logistic model and 0.905 for the LASSO model.The LASSO model provided greater utility in clinical decision-making.CONCLUSION A risk prediction model for the pathological upgrading of gastric LGIN based on white-light and magnifying endoscopic features can accurately and effectively guide clinical diagnosis and treatment. 展开更多
关键词 Endoscopic resection Gastric low-grade intraepithelial neoplasia Early gastric cancer Pathological upgrade Prediction model
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Research on the Pathways and Countermeasures for Accelerating the Transformation and Upgrading of the Sci-Tech Economy in Xiaogan City 认领 引用
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作者 Dan Guo 《Proceedings of Business and Economic Studies》 2025年第8期48-56,共9页
In recent years,Xiaogan City has vigorously implemented an innovation-driven development strategy.However,there is still considerable room for improvement in its scientific and technological innovation level and compr... In recent years,Xiaogan City has vigorously implemented an innovation-driven development strategy.However,there is still considerable room for improvement in its scientific and technological innovation level and comprehensive capabilities.Against this backdrop,based on thorough research,this paper analyzes the characteristics of industrial structure changes and the current situation of sci-tech economic development in Xiaogan City.It summarizes the shortcomings and bottlenecks in promoting sci-tech economic development and industrial transformation and upgrading.The paper proposes targeted policy suggestions regarding financial support for scientific and technological innovation,the positioning of industrial chains and innovation chains,coordinated regional development of the sci-tech economy,the cultivation of“Specialized,Refined,Characteristic,and Innovative”enterprises,and the building of R&D and innovation talent teams. 展开更多
关键词 Sci-tech economy Industrial upgrading Pathways Countermeasures
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