In the terraced fields in Honghe Hani and Yi Autonomous Prefecture,southwest China’s Yunnan Province,the morning mist drifts up from the valleys while the tiered ridges spread like the fingerprints of the earth.
The regulatory processes in developmental biology research are significantly influenced by long non-coding RNAs(lncRNAs).However,the dynamics of lncRNA expression during human tooth development remain poorly understoo...The regulatory processes in developmental biology research are significantly influenced by long non-coding RNAs(lncRNAs).However,the dynamics of lncRNA expression during human tooth development remain poorly understood.In this research,we examined the lncRNAs present in the dental epithelium(DE)and dental mesenchyme(DM)at the late bud,cap,and early bell stages of human fetal tooth development through bulk RNA sequencing.Developmental regulators co-expressed with neighboring lncRNAs were significantly enriched in odontogenesis.Specific lncRNAs expressed in the DE and DM,such as PANCR,MIR205HG,DLX6-AS1,and DNM3OS,were identified through a combination of bulk RNA sequencing and single-cell analysis.Further subcluster analysis revealed lncRNAs specifically expressed in important regions of the tooth germ,such as the inner enamel epithelium and coronal dental papilla(CDP).Functionally,we demonstrated that CDP-specific DLX6-AS1 enhanced odontoblastic differentiation in human tooth germ mesenchymal cells and dental pulp stem cells.These findings suggest that lncRNAs could serve as valuable cell markers for tooth development and potential therapeutic targets for tooth regeneration.展开更多
The World Telecommunication Development Conference 2025(WTDC-25)will be hosted by the Government of Azerbaijan in Baku on November 17-28,2025.World Telecommunication Development Conferences(WTDCs)are convened in the p...The World Telecommunication Development Conference 2025(WTDC-25)will be hosted by the Government of Azerbaijan in Baku on November 17-28,2025.World Telecommunication Development Conferences(WTDCs)are convened in the period between two Plenipotentiary Conferences to consider topics,projects and programmes relevant to telecommunication development.WTDCs set the strategies and objectives for the development of telecommunication/ICT,providing direction and guidance to the ITU Telecommunication Development Sector(ITU-D).展开更多
Developing deep fragmented soft coalbed methane(CBM)can significantly enhance domestic natural gas supplies,reduce reliance on imported energy,and bolster national energy security.This manuscript provides a comprehens...Developing deep fragmented soft coalbed methane(CBM)can significantly enhance domestic natural gas supplies,reduce reliance on imported energy,and bolster national energy security.This manuscript provides a comprehensive review of commonly employed coalbed methane extraction technologies.It then delves into several critical issues in the current stage of CBM exploration and development in China,including the compatibility of existing technologies with CBM reservoirs,the characteristics and occurrence states of CBM reservoirs,critical desorption pressure,and gas generation mechanisms.Our research indicates that current CBM exploration and development technologies in China have reached an internationally advanced level,yet the industry is facing unprecedented challenges.Despite progress in low-permeability,high-value coal seams,significant breakthroughs have not been achieved in exploring other types of coal seams.For different coal reservoirs,integrated extraction technologies have been developed,such as surface pre-depressurisation and segmented hydraulic fracturing of coal seam roof strata.Additionally,techniques like large-scale volume fracturing in horizontal wells have been established,significantly enhancing reservoir stimulation effects and coalbed methane recovery rates.However,all of these technologies are fundamentally based on permeation.These technologies lack direct methods aimed at enhancing the diffusion rate of CBM,thereby failing to fully reflect the unique characteristics of CBM.Current CBM exploration and development theories and technologies are not universally applicable to all coal seams.They do not adequately account for the predominantly adsorbed state of CBM,and the complex and variable gas generation mechanisms further constrain CBM development in China.Finally,continuous exploration of new deep CBM exploration technologies is necessary.Integrating more effective reservoir stimulation technologies is essential to enhance technical adaptability concerning CBM reservoir characteristics,gas occurrence states,and gas generation mechanisms,ultimately achieving efficient CBM development.We conclude that while China possesses a substantial foundation of deep fractured CBM resources,industry development is constrained and requires continuous exploration of new CBM exploration and development technologies to utilize these resources effectively.展开更多
Urban areas’performance in water,energy,infrastructure,and socio-economic sectors is intertwined and measurable through Sustainable Development Goals(SDGs)6–13.Effective synergy among these is critical for sustainab...Urban areas’performance in water,energy,infrastructure,and socio-economic sectors is intertwined and measurable through Sustainable Development Goals(SDGs)6–13.Effective synergy among these is critical for sustainability.This study constructs an indicator framework that reflects progress towards these urban SDGs in China.Findings indicate underperformance in SDGs 8–11,suggesting the need for transformative actions.Through network analysis,the research reveals complementarities among these SDGs.Notably,the SDG space divides into socio-economic and ecological clusters,with SDG 6(Clean Water and Sanitation)central to both.Additionally,SDG 8(Decent Work and Economic Growth)and SDG 9(Industry,Innovation,and Infrastructure)act as bridges,while greater synergies exist between SDG 12(Responsible Consumption and Production)and SDG 13(Climate Action).An in-depth view at the indicator-level shows a core-periphery structure,emphasizing indicators like SDG 6.2(Wastewater Treatment Rate)and SDG 6.6(Recycled Water Production Capacity per capita)as pivotal.This study confirms the urban SDG space’s stability and predictiveness,underscoring its value in steering well-aligned policy decisions for sustainable growth.展开更多
Economic growth and fair distribution are two major goals pursued in economic development.Through a comparative analysis of economies such as those in Europe and the United States,it is found that:Economic growth does...Economic growth and fair distribution are two major goals pursued in economic development.Through a comparative analysis of economies such as those in Europe and the United States,it is found that:Economic growth does not have to be conditional on the expansion of income gap;growth will not automatically lead to fair distribution;efficiency and fairness can occur simultaneously;the transformation of the economic development mode can be achieved through income distribution.A shared development model that takes into account both growth and fairness is the choice to achieve sustained and stable economic growth.It is necessary to deepen the reform of the income distribution system,improve social security and other measures to promote the development achievements to benefit the majority of workers more,and achieve both efficiency and fairness at the same time.展开更多
Against the background of energy conservation and emission reduction,green construction and intelligent buildings have become an inevitable trend in the transformation of the construction industry.They effectively red...Against the background of energy conservation and emission reduction,green construction and intelligent buildings have become an inevitable trend in the transformation of the construction industry.They effectively reduce environmental damage and pollution caused by construction projects during the construction process,improve the comfort and health of buildings,and are conducive to promoting the sustainable development of China’s construction industry.This paper analyzes the relationship between green construction and intelligent buildings,examines the dilemmas faced by the integrated development of green construction and intelligent buildings,and proposes measures such as optimizing architectural design schemes,advancing technological innovation,improving energy utilization efficiency,actively applying BIM technology,and strengthening building lifecycle management,so as to promote the sustainable development of China’s construction industry.展开更多
Global climate change has created substantial difficulties in the areas of sustainability,development,and environmental conservation due to the widespread dependence on fossil fuels for energy production.Nevertheless,...Global climate change has created substantial difficulties in the areas of sustainability,development,and environmental conservation due to the widespread dependence on fossil fuels for energy production.Nevertheless,the promotion of renewable energy programs has the potential to significantly expedite endeavors aimed at tackling climate change.Thus,it is essential to conduct a thorough analysis that considers the financial aspects to fully understand the main hurdles that are preventing the advancement of renewable energy initiatives.Italy is a leading country in the worldwide deployment of renewable energy.The objective of this research is to assess the impact of financial growth,economic progress,and energy expenses on Italy’s adoption of renewable energy sources.By employing the Auto-Regressive Distributed Lag(ARDL)technique,we analyzed annual data spanning from1990 to 2022.Findings revealed that a 1%increase in financial and economic development would boost renewable energy consumption in the long run by 0.29%and 0.48%,respectively.Instead,a 1%increase in energy prices might reduce consumption of renewable energy by 0.05%in the long run.This study’s primary significance lies in furnishing actionable strategies for Italy to augment green finance for renewable energy,fostering sustained social and economic progress.Moreover,the analytical insights gleaned from this research offer valuable insights for energy-importing nations worldwide.展开更多
The Chinese government promises to reach the carbon emission peak by 2030 and achieve the carbon neutrality by 2060.Renewable energy development is important for achieving this target.Local governments’behaviors and ...The Chinese government promises to reach the carbon emission peak by 2030 and achieve the carbon neutrality by 2060.Renewable energy development is important for achieving this target.Local governments’behaviors and attitudes might be influenced by neighbors.Therefore,this study uses simultaneous autoregressive models(SAR)to examine the peer effects on renewable energy development across China’s provinces and explain the imbalanced renewable energy developments across regions in China.The results exemplified:①The peer effects exist in China and the endogenous interaction is the main cause.②The interaction between geographically adjacent provinces have greatest peer effects.③Both competition mechanism and learning mechanism induce the peer effects and the imbalanced development.This research introduces energy-related peer effects at the provincial level to reflect the preferences of governments and reveal the underlying mechanisms involved.It also provides suggestions to policy makers:①Select developed provinces as the frontrunner to promote the renewable energy development in neighboring areas.②Regional renewable energy development policies need to be considered.③Central government should consider adding“green growth indicators”into evaluation system to avoid the asymmetrical incentives policies between economic growth and environmental protection.展开更多
Creative tourism is a dynamic and innovative approach to tourism,which points out the importance of people's active participation and their immersion in such experiences.In a vernacular context,it should attract p...Creative tourism is a dynamic and innovative approach to tourism,which points out the importance of people's active participation and their immersion in such experiences.In a vernacular context,it should attract people(local and tourists)attention to accomplish its main goals.Despite its rich cultural and natural assets,Kurdistan province faces several challenges that impact its tourism potential.To achieve that,the study uses quantitative approach to thoroughly analyze and evaluate the components of creative tourism in this province.The research focuses on tourists who visited the province's ten towns during the spring and summer of 2023.Data collection utilized a Likert-scale questionnaire ranging from"very good"to"very poor".The study employed a semistructured questionnaire developed through qualitative interviews alongside a researcher-made questionnaire validated by experts from the University of Kurdistan.The qualitative questionnaire achieved a high-reliability score of 93%using Cronbach's alpha coefficient.In-depth interviews and literary research were conducted to identify creative tourism components and indicators,informing the development of a quantitative questionnaire.Data analysis was performed using SPSS 20 and AMOS software to scrutinize the survey findings,providing insights into enhancing creative tourism strategies in Kurdistan province.The results reveal the varying significance of these dimensions,with the cultural dimension identified as the most crucial(factor loading:0.95),followed by the social(0.92),economic(0.88),and managerial/political dimensions(0.83).The study highlights the importance of cultural planning,community engagement,and infrastructural support in fostering creative tourism.Furthermore,it explores the impact of creative industries,such as music and arts rooted in Kurdish culture,on tourism development.Economic diversification and spatialphysical considerations are critical factors in enhancing Kurdistan's appeal as a creative tourism destination,emphasizing sustainable growth and cultural preservation.展开更多
Autism Spectrum Disorder(ASD)is marked by early-onset neurodevelopmental anomalies,yet the tem-poral dynamics of genetic contributions to these processes remain insufficiently understood.This study aimed to elu-cidate...Autism Spectrum Disorder(ASD)is marked by early-onset neurodevelopmental anomalies,yet the tem-poral dynamics of genetic contributions to these processes remain insufficiently understood.This study aimed to elu-cidate the role of the Shank3 gene,known to be associated with monogenic causes of autism,in early developmental processes to inform the timing and mechanisms for poten-tial interventions for ASD.Utilizing the Shank3B knockout(KO)mouse model,we examined Shank3 expression and its impact on neuronal maturation through Golgi staining for dendritic morphology and electrophysiological recordings to measure synaptic function in the anterior cingulate cortex(ACC)across different postnatal stages.Our longitudinal analysis revealed that,while Shank3B KO mice displayed normal neuronal morphology at one week postnatal,signifi-cant impairments in dendritic growth and synaptic activity emerged by two to three weeks.These findings highlight the critical developmental window during which Shank3 is essential for neuronal and synaptic maturation in the ACC.展开更多
Since arriving in Singapore in 1993,William Yang,a visiting professor at the National University of Singapore(NUS),has spent over three decades immersed in the city-state’s vibrant landscape.Throughout these 32 years...Since arriving in Singapore in 1993,William Yang,a visiting professor at the National University of Singapore(NUS),has spent over three decades immersed in the city-state’s vibrant landscape.Throughout these 32 years,he has not only witnessed but also actively contributed to the flourishing friendship and dynamic cooperation between China and Singapore.“I was deeply struck when I first arrived in Singapore,”recalled Yang.“This country was ahead of China in terms of material living standards,economic development,and international outlook.”He describes this period as a“journey of learning.”展开更多
This study systematically reviews the development history and key technological breakthroughs of large gas fields in the Ordos Basin,and summarizes the development models of three gas reservoir types,low-permeability ...This study systematically reviews the development history and key technological breakthroughs of large gas fields in the Ordos Basin,and summarizes the development models of three gas reservoir types,low-permeability carbonate,low-permeability sandstone and tight sandstone,as well as the progress in deep coal-rock gas development.The current challenges and future development directions are also discussed.Mature development models have been formed for the three representative types of gas reservoirs in the Ordos Basin:(1)Low-permeability carbonate reservoir development model featuring groove fine-scale characterization and three-dimensional vertical succession between Upper and Lower Paleozoic formations.(2)Low-permeability sandstone reservoir development model emphasizing horizontal well pressure-depletion production and vertical well pressure-controlled production.(3)Tight sandstone gas reservoir development model focusing on single-well productivity enhancement and well placement optimization.In deep coal-rock gas development,significant progress has been achieved in reservoir evaluation,sweet spot prediction,and geosteering of horizontal wells.The three types of reservoirs have entered the mid-to-late stages of the development,when the main challenge lies in accurately characterizing residual gas,evaluating secondary gas-bearing layers,and developing precise potential-tapping strategies.In contrast,for the early-stage development of deep coal-rock gas,continuous technological upgrades and cost reduction are essential to achieving economically viable large-scale development.Four key directions of future research and technological breakthroughs are proposed:(1)Utilizing dual-porosity(fracture-matrix)modeling techniques in low-permeability carbonate reservoirs to delineate the volume and distribution of remaining gas in secondary pay zones,supporting well pattern optimization and production enhancement of existing wells.(2)Integrating well-log and seismic data to characterize reservoir spatial distribution of successive strata,enhancing drilling success rates in low-permeability sandstone reservoirs.(3)Utilizing the advantages of horizontal wells to penetrate effective reservoirs laterally,achieving meter-scale quantification of small-scale single sand bodies in tight gas reservoirs,and applying high-resolution 3D geological models to clarify the distribution of remaining gas and guide well placement optimization.(4)Further strengthening the evaluation of deep coal-rock gas in terms of resource potential,well type and pattern,reservoir stimulation,single-well performance,and economic viability.展开更多
China has achieved the poverty reduction goal of the United Nations 2030 Agenda for Sustainable Development 10 years ahead of schedule,contributing significantly to global poverty reduction.Despite extended efforts in...China has achieved the poverty reduction goal of the United Nations 2030 Agenda for Sustainable Development 10 years ahead of schedule,contributing significantly to global poverty reduction.Despite extended efforts in poverty elimination,there is a lack of quantitative studies categorizing and comparing poverty-elimination counties(PECs)based on their processes.This study proposes an innovative framework for analyzing PECs’development paths from the perspective of population-land-industry(PLI).We quantify the PLI matching degree of PECs in China during the critical phase of the battle against poverty through a multivariate matching model,classify PECs via K-means clustering according to the consistency in PLI matching degree evolution,and summarize the typical development patterns of PECs.Results indicate that the PLI matching degree of PECs in China increased substantially from 2015 to 2020,particularly in eastern areas,while the western region,including the Qinghai-Xizang Plateau and southwestern Xinjiang,shows untapped potential for improvement.Five types of PECs are identified,with the majority(30.1%)showing sustained moderate PLI matching and a minority(9.6%)experiencing long-term PLI mismatch.Industry is the shortfall of various PECs,and effective strategies to facilitate all types of PECs include the development of emerging businesses and the expansion of secondary and tertiary industries.Additionally,enriching rural labor force and increasing farmland use efficiency are essential for optimal PLI matching and positive interaction,ultimately ensuring poverty elimination and sustainable development.展开更多
SHANGHAI is blazing a new development track powered by dual engines:one is intelligent manufacturing empowered by cutting-edge technologies,and the other is green development driven by lowcarbon and energy-saving solu...SHANGHAI is blazing a new development track powered by dual engines:one is intelligent manufacturing empowered by cutting-edge technologies,and the other is green development driven by lowcarbon and energy-saving solutions.On September 10,China Today visited two enterprises in Shanghai–Shanghai Schneider Electric Industrial Control Co.,Ltd.and Huaqin Technology Co.,Ltd.–to observe firsthand how global investment and local innovation are jointly shaping Shanghai’s future of high-quality development.展开更多
On June 3,Scopus,a database owned by Elsevier,released CiteScore 2024 metrics for academic journal evaluation.Both the Chinese and English editions of Petroleum Exploration and Development achieved record highs in the...On June 3,Scopus,a database owned by Elsevier,released CiteScore 2024 metrics for academic journal evaluation.Both the Chinese and English editions of Petroleum Exploration and Development achieved record highs in the past year,ranking among the top in various categories.The CiteScore of the Chinese edition increased to 9.9 in 2024 from 8.4 in 2023,ranking 13th out of 330 journals in the Earth and Planetary Sciences:Geology category and 2lst out of 239 journals in the Earth and Planetary Sciences:Geotechnical Engineering and Engineering Geology category.展开更多
The ecdysone-induced transcription factor E93 in model insects plays multiple roles in the insect metamorphosis processes,such as remodeling larval tissues and determining adult tissue formation.The knockdown of E93in...The ecdysone-induced transcription factor E93 in model insects plays multiple roles in the insect metamorphosis processes,such as remodeling larval tissues and determining adult tissue formation.The knockdown of E93in insects leads to incomplete metamorphosis,suggesting that E93 is a potential target for pest control.In this study,the HaE93 gene in the cotton bollworm Helicoverpa armigera,a polyphagous pest of various commercial crops worldwide,was identified and found to have high expression in the egg,prepupal,and pupal stages.The injection of ds HaE93 induced about 60%mortality in H.armigera at the larval-pupal stage.About 30%survived but showed delayed pupation and abnormal wings,and the females developed reduced ovaries.Therefore,about 90%of the HaE93 knockdown individuals failed to reproduce before they died.The results of qRT-PCR showed that the expression levels of ecdysone primary-response genes,chitin synthesis-related genes,and wing and ovary development-related genes were reduced in HaE93 knockdown H.armigera.These results indicated that HaE93plays a critical role in larva-pupa-adult metamorphosis and the development of the cuticle,wing,and ovary in female H.armigera by regulating the expression of the associated genes.Bioassays of ds HaE93 administered by either oral delivery or injection showed similar knockdown results,which suggested that HaE93 can be used as a target gene for the RNAi control of the pest H.armigera.展开更多
Exploring the specific environmental impacts and mechanisms of China’s sustainable development pilot policy can enrich and expand China’s institutional and practical experiences,offering valuable insights and refere...Exploring the specific environmental impacts and mechanisms of China’s sustainable development pilot policy can enrich and expand China’s institutional and practical experiences,offering valuable insights and references for advancing global environmental sustainability.This study selects the National Innovation Demonstration Zone for Sustainable Development Agenda(NIDZSDA)as the sample and empirically evaluates the effects of the policy on urban environmental quality,using panel data from 74 prefecture-level cities in China between 2006 and 2020.The findings indicate that the sustainable development policy significantly improves urban environmental quality.Two key mechanisms identified are the aggregation of high-quality talent and the enhancement of technological innovation capabilities.Furthermore,the policy exhibits heterogeneous effects across different types of cities,with more pronounced improvements observed in mega and super cities,as well as in resource-based cities.展开更多
Dongyuemiao Member shale in the Sichuan Basin,China,is characterized by organic-rich shale intervals with different types of interbeds and accumulation modes.The aim of this study is to elucidate the impact of paleoen...Dongyuemiao Member shale in the Sichuan Basin,China,is characterized by organic-rich shale intervals with different types of interbeds and accumulation modes.The aim of this study is to elucidate the impact of paleoenvironmental indicators on interbed development.With this aim in mind,we established an interbed classification scheme and quantified the development of different types of interbeds and their frequencies.We categorized the shale interbeds into three types based on interbed type:silt interbeds(SIs),shell fragment interbeds(SFIs),and shell skeleton interbeds(SSIs).The SIs,SFIs,and SSIs are respectively the products of extrabasinal low-density turbidity currents,intrabasinal debris flow,and intrabasinal low-density turbidity currents.We propose that variations in paleoenvironmental conditions primarily influenced the types of interbeds that developed but had minimal impact on the frequency of their development.Models depicting the interbed development within the 1st Submember of Dongyuemiao Member indicate that during the early Dongyuemiao depositional period,under conditions of relatively aridity,weak weathering,high terrigenous input,and strong hydrodynamic activity,SSIs were well developed.In the middle depositional period,as the climate gradually transitioned to more humid conditions,and the weathering intensity and amount of terrestrial input increased,the development of SIs and SFIs significantly increased.During the late depositional period,with a continuous decrease in terrestrial inputs and sedimentation rates,the development of SIs decreased while that of SSIs increased.展开更多
As decarbonization pressure on traditional fossil fuel-related industries gradually intensifies,CCUS has been increasingly incorporated into energy transition strategies by various oil companies.From a development opp...As decarbonization pressure on traditional fossil fuel-related industries gradually intensifies,CCUS has been increasingly incorporated into energy transition strategies by various oil companies.From a development opportunity perspective,oil companies possess four key advantages in developing the CCUS industry:exploration and development technology advantages;geological resource advantages;capital advantages;source-sink matching advantages.In terms of challenges,oil companies face numerous issues in developing the CCUS industry,including technological development,economic viability,and policy and legal aspects.At the national level,China’s oil companies should advocate for improving and optimizing relevant laws and regulations,enhancing the policy support system,incorporating CCUS into the carbon trading market,and strengthening top-level design and medium-to long-term planning;at the enterprise level,they should continuously advance full industrial chain technologies and reduce CCUS project operating costs,selectively participate in industrial segments that suit their capabilities,strengthen CCUS full industrial chain operational capabilities,and enhance talent development and strengthen international exchange and cooperation.展开更多
文摘In the terraced fields in Honghe Hani and Yi Autonomous Prefecture,southwest China’s Yunnan Province,the morning mist drifts up from the valleys while the tiered ridges spread like the fingerprints of the earth.
基金supported by the National Key Research and Development Program(2022YFA1104401)Beijing Municipal Government grant(Beijing Laboratory of Oral Health,PXM2021-014226-000041)+3 种基金Beijing Municipal Govemment(Beijing Scholar Program,PXM2021-014226-000020)National Natural Science Foundation of China(82030031,92149301,81991504,L2224038,82270945)Innovation Research Team Project of Beijing Stomatological Hospital,Capital Medical University(CXTD202201)Chinese Research Unit of Tooth Development and Regeneration,Academy of Medical Sciences(2019-12M-5-031).
文摘The regulatory processes in developmental biology research are significantly influenced by long non-coding RNAs(lncRNAs).However,the dynamics of lncRNA expression during human tooth development remain poorly understood.In this research,we examined the lncRNAs present in the dental epithelium(DE)and dental mesenchyme(DM)at the late bud,cap,and early bell stages of human fetal tooth development through bulk RNA sequencing.Developmental regulators co-expressed with neighboring lncRNAs were significantly enriched in odontogenesis.Specific lncRNAs expressed in the DE and DM,such as PANCR,MIR205HG,DLX6-AS1,and DNM3OS,were identified through a combination of bulk RNA sequencing and single-cell analysis.Further subcluster analysis revealed lncRNAs specifically expressed in important regions of the tooth germ,such as the inner enamel epithelium and coronal dental papilla(CDP).Functionally,we demonstrated that CDP-specific DLX6-AS1 enhanced odontoblastic differentiation in human tooth germ mesenchymal cells and dental pulp stem cells.These findings suggest that lncRNAs could serve as valuable cell markers for tooth development and potential therapeutic targets for tooth regeneration.
文摘The World Telecommunication Development Conference 2025(WTDC-25)will be hosted by the Government of Azerbaijan in Baku on November 17-28,2025.World Telecommunication Development Conferences(WTDCs)are convened in the period between two Plenipotentiary Conferences to consider topics,projects and programmes relevant to telecommunication development.WTDCs set the strategies and objectives for the development of telecommunication/ICT,providing direction and guidance to the ITU Telecommunication Development Sector(ITU-D).
基金supported by the National Natural Science Foundation of China(52074045,52274074)the Science Fund for Distinguished Young Scholars of Chongqing(CSTB2022NSCQ-JQX0028).
文摘Developing deep fragmented soft coalbed methane(CBM)can significantly enhance domestic natural gas supplies,reduce reliance on imported energy,and bolster national energy security.This manuscript provides a comprehensive review of commonly employed coalbed methane extraction technologies.It then delves into several critical issues in the current stage of CBM exploration and development in China,including the compatibility of existing technologies with CBM reservoirs,the characteristics and occurrence states of CBM reservoirs,critical desorption pressure,and gas generation mechanisms.Our research indicates that current CBM exploration and development technologies in China have reached an internationally advanced level,yet the industry is facing unprecedented challenges.Despite progress in low-permeability,high-value coal seams,significant breakthroughs have not been achieved in exploring other types of coal seams.For different coal reservoirs,integrated extraction technologies have been developed,such as surface pre-depressurisation and segmented hydraulic fracturing of coal seam roof strata.Additionally,techniques like large-scale volume fracturing in horizontal wells have been established,significantly enhancing reservoir stimulation effects and coalbed methane recovery rates.However,all of these technologies are fundamentally based on permeation.These technologies lack direct methods aimed at enhancing the diffusion rate of CBM,thereby failing to fully reflect the unique characteristics of CBM.Current CBM exploration and development theories and technologies are not universally applicable to all coal seams.They do not adequately account for the predominantly adsorbed state of CBM,and the complex and variable gas generation mechanisms further constrain CBM development in China.Finally,continuous exploration of new deep CBM exploration technologies is necessary.Integrating more effective reservoir stimulation technologies is essential to enhance technical adaptability concerning CBM reservoir characteristics,gas occurrence states,and gas generation mechanisms,ultimately achieving efficient CBM development.We conclude that while China possesses a substantial foundation of deep fractured CBM resources,industry development is constrained and requires continuous exploration of new CBM exploration and development technologies to utilize these resources effectively.
基金supported by the Excellent Young Scientists Fund from the National Natural Science Foundation of China(No.72022004)the National Key Scientific Research Project(No.2021YFC3200200).
文摘Urban areas’performance in water,energy,infrastructure,and socio-economic sectors is intertwined and measurable through Sustainable Development Goals(SDGs)6–13.Effective synergy among these is critical for sustainability.This study constructs an indicator framework that reflects progress towards these urban SDGs in China.Findings indicate underperformance in SDGs 8–11,suggesting the need for transformative actions.Through network analysis,the research reveals complementarities among these SDGs.Notably,the SDG space divides into socio-economic and ecological clusters,with SDG 6(Clean Water and Sanitation)central to both.Additionally,SDG 8(Decent Work and Economic Growth)and SDG 9(Industry,Innovation,and Infrastructure)act as bridges,while greater synergies exist between SDG 12(Responsible Consumption and Production)and SDG 13(Climate Action).An in-depth view at the indicator-level shows a core-periphery structure,emphasizing indicators like SDG 6.2(Wastewater Treatment Rate)and SDG 6.6(Recycled Water Production Capacity per capita)as pivotal.This study confirms the urban SDG space’s stability and predictiveness,underscoring its value in steering well-aligned policy decisions for sustainable growth.
基金2024 Annual Project of Philosophy and Social Sciences Planning of Shenzhen(Project No.:SZ2024B011)2025 Special Research Project of Shenzhen Academy of Social Sciences:Institutional Mechanisms for Promoting Deep Integration Between Manufacturing and Digital Economy in Shenzhen,School-level Quality Engineering Project of Shenzhen Polytechnic(Project No.:10018021310011Z)School-level Scientific Research Project of Shenzhen Polytechnic(Project No.:6025310012S)。
文摘Economic growth and fair distribution are two major goals pursued in economic development.Through a comparative analysis of economies such as those in Europe and the United States,it is found that:Economic growth does not have to be conditional on the expansion of income gap;growth will not automatically lead to fair distribution;efficiency and fairness can occur simultaneously;the transformation of the economic development mode can be achieved through income distribution.A shared development model that takes into account both growth and fairness is the choice to achieve sustained and stable economic growth.It is necessary to deepen the reform of the income distribution system,improve social security and other measures to promote the development achievements to benefit the majority of workers more,and achieve both efficiency and fairness at the same time.
文摘Against the background of energy conservation and emission reduction,green construction and intelligent buildings have become an inevitable trend in the transformation of the construction industry.They effectively reduce environmental damage and pollution caused by construction projects during the construction process,improve the comfort and health of buildings,and are conducive to promoting the sustainable development of China’s construction industry.This paper analyzes the relationship between green construction and intelligent buildings,examines the dilemmas faced by the integrated development of green construction and intelligent buildings,and proposes measures such as optimizing architectural design schemes,advancing technological innovation,improving energy utilization efficiency,actively applying BIM technology,and strengthening building lifecycle management,so as to promote the sustainable development of China’s construction industry.
文摘Global climate change has created substantial difficulties in the areas of sustainability,development,and environmental conservation due to the widespread dependence on fossil fuels for energy production.Nevertheless,the promotion of renewable energy programs has the potential to significantly expedite endeavors aimed at tackling climate change.Thus,it is essential to conduct a thorough analysis that considers the financial aspects to fully understand the main hurdles that are preventing the advancement of renewable energy initiatives.Italy is a leading country in the worldwide deployment of renewable energy.The objective of this research is to assess the impact of financial growth,economic progress,and energy expenses on Italy’s adoption of renewable energy sources.By employing the Auto-Regressive Distributed Lag(ARDL)technique,we analyzed annual data spanning from1990 to 2022.Findings revealed that a 1%increase in financial and economic development would boost renewable energy consumption in the long run by 0.29%and 0.48%,respectively.Instead,a 1%increase in energy prices might reduce consumption of renewable energy by 0.05%in the long run.This study’s primary significance lies in furnishing actionable strategies for Italy to augment green finance for renewable energy,fostering sustained social and economic progress.Moreover,the analytical insights gleaned from this research offer valuable insights for energy-importing nations worldwide.
基金supported by the National Natural Science Foundation of China[Grant No.71834003,72204111]the Major Program of National Social Science Foundation of China[Grant No.21&ZD110,22ZDA113].
文摘The Chinese government promises to reach the carbon emission peak by 2030 and achieve the carbon neutrality by 2060.Renewable energy development is important for achieving this target.Local governments’behaviors and attitudes might be influenced by neighbors.Therefore,this study uses simultaneous autoregressive models(SAR)to examine the peer effects on renewable energy development across China’s provinces and explain the imbalanced renewable energy developments across regions in China.The results exemplified:①The peer effects exist in China and the endogenous interaction is the main cause.②The interaction between geographically adjacent provinces have greatest peer effects.③Both competition mechanism and learning mechanism induce the peer effects and the imbalanced development.This research introduces energy-related peer effects at the provincial level to reflect the preferences of governments and reveal the underlying mechanisms involved.It also provides suggestions to policy makers:①Select developed provinces as the frontrunner to promote the renewable energy development in neighboring areas.②Regional renewable energy development policies need to be considered.③Central government should consider adding“green growth indicators”into evaluation system to avoid the asymmetrical incentives policies between economic growth and environmental protection.
基金supported by Exploring Visitor Satisfaction at Hunan's National Eco-Tourism Demonstration Zone in the Post-Pandemic Era:A Study(20YBA188)a project titled"Ecological and Limnological Study of the Zayibar International Wetland,Aiming to Provide Restoration Solutions"(S/01/9/10225),conducted at the Kurdistan Studies Research Institute,University of Kurdistan,in 2024。
文摘Creative tourism is a dynamic and innovative approach to tourism,which points out the importance of people's active participation and their immersion in such experiences.In a vernacular context,it should attract people(local and tourists)attention to accomplish its main goals.Despite its rich cultural and natural assets,Kurdistan province faces several challenges that impact its tourism potential.To achieve that,the study uses quantitative approach to thoroughly analyze and evaluate the components of creative tourism in this province.The research focuses on tourists who visited the province's ten towns during the spring and summer of 2023.Data collection utilized a Likert-scale questionnaire ranging from"very good"to"very poor".The study employed a semistructured questionnaire developed through qualitative interviews alongside a researcher-made questionnaire validated by experts from the University of Kurdistan.The qualitative questionnaire achieved a high-reliability score of 93%using Cronbach's alpha coefficient.In-depth interviews and literary research were conducted to identify creative tourism components and indicators,informing the development of a quantitative questionnaire.Data analysis was performed using SPSS 20 and AMOS software to scrutinize the survey findings,providing insights into enhancing creative tourism strategies in Kurdistan province.The results reveal the varying significance of these dimensions,with the cultural dimension identified as the most crucial(factor loading:0.95),followed by the social(0.92),economic(0.88),and managerial/political dimensions(0.83).The study highlights the importance of cultural planning,community engagement,and infrastructural support in fostering creative tourism.Furthermore,it explores the impact of creative industries,such as music and arts rooted in Kurdish culture,on tourism development.Economic diversification and spatialphysical considerations are critical factors in enhancing Kurdistan's appeal as a creative tourism destination,emphasizing sustainable growth and cultural preservation.
基金supported by the Natural Science Foundation of China(32394032,82201699,and 82221001)the Natural Science Foundation of Zhejiang Province(LTGD24H250001)+1 种基金the Kay R&D Program of Shaanxi Province(2023-YBSF-093),the Young Talent Fund of University Association for Science and Technology in Shaanxi(20220306)the Joint Founding Project of Innovation Research Institute,Xijing Hospital(LHJJ24JH02).
文摘Autism Spectrum Disorder(ASD)is marked by early-onset neurodevelopmental anomalies,yet the tem-poral dynamics of genetic contributions to these processes remain insufficiently understood.This study aimed to elu-cidate the role of the Shank3 gene,known to be associated with monogenic causes of autism,in early developmental processes to inform the timing and mechanisms for poten-tial interventions for ASD.Utilizing the Shank3B knockout(KO)mouse model,we examined Shank3 expression and its impact on neuronal maturation through Golgi staining for dendritic morphology and electrophysiological recordings to measure synaptic function in the anterior cingulate cortex(ACC)across different postnatal stages.Our longitudinal analysis revealed that,while Shank3B KO mice displayed normal neuronal morphology at one week postnatal,signifi-cant impairments in dendritic growth and synaptic activity emerged by two to three weeks.These findings highlight the critical developmental window during which Shank3 is essential for neuronal and synaptic maturation in the ACC.
文摘Since arriving in Singapore in 1993,William Yang,a visiting professor at the National University of Singapore(NUS),has spent over three decades immersed in the city-state’s vibrant landscape.Throughout these 32 years,he has not only witnessed but also actively contributed to the flourishing friendship and dynamic cooperation between China and Singapore.“I was deeply struck when I first arrived in Singapore,”recalled Yang.“This country was ahead of China in terms of material living standards,economic development,and international outlook.”He describes this period as a“journey of learning.”
文摘This study systematically reviews the development history and key technological breakthroughs of large gas fields in the Ordos Basin,and summarizes the development models of three gas reservoir types,low-permeability carbonate,low-permeability sandstone and tight sandstone,as well as the progress in deep coal-rock gas development.The current challenges and future development directions are also discussed.Mature development models have been formed for the three representative types of gas reservoirs in the Ordos Basin:(1)Low-permeability carbonate reservoir development model featuring groove fine-scale characterization and three-dimensional vertical succession between Upper and Lower Paleozoic formations.(2)Low-permeability sandstone reservoir development model emphasizing horizontal well pressure-depletion production and vertical well pressure-controlled production.(3)Tight sandstone gas reservoir development model focusing on single-well productivity enhancement and well placement optimization.In deep coal-rock gas development,significant progress has been achieved in reservoir evaluation,sweet spot prediction,and geosteering of horizontal wells.The three types of reservoirs have entered the mid-to-late stages of the development,when the main challenge lies in accurately characterizing residual gas,evaluating secondary gas-bearing layers,and developing precise potential-tapping strategies.In contrast,for the early-stage development of deep coal-rock gas,continuous technological upgrades and cost reduction are essential to achieving economically viable large-scale development.Four key directions of future research and technological breakthroughs are proposed:(1)Utilizing dual-porosity(fracture-matrix)modeling techniques in low-permeability carbonate reservoirs to delineate the volume and distribution of remaining gas in secondary pay zones,supporting well pattern optimization and production enhancement of existing wells.(2)Integrating well-log and seismic data to characterize reservoir spatial distribution of successive strata,enhancing drilling success rates in low-permeability sandstone reservoirs.(3)Utilizing the advantages of horizontal wells to penetrate effective reservoirs laterally,achieving meter-scale quantification of small-scale single sand bodies in tight gas reservoirs,and applying high-resolution 3D geological models to clarify the distribution of remaining gas and guide well placement optimization.(4)Further strengthening the evaluation of deep coal-rock gas in terms of resource potential,well type and pattern,reservoir stimulation,single-well performance,and economic viability.
基金supported by the National Natural Science Foundation of China(Grants No.41931293,42271279,42293271,and 41801175).
文摘China has achieved the poverty reduction goal of the United Nations 2030 Agenda for Sustainable Development 10 years ahead of schedule,contributing significantly to global poverty reduction.Despite extended efforts in poverty elimination,there is a lack of quantitative studies categorizing and comparing poverty-elimination counties(PECs)based on their processes.This study proposes an innovative framework for analyzing PECs’development paths from the perspective of population-land-industry(PLI).We quantify the PLI matching degree of PECs in China during the critical phase of the battle against poverty through a multivariate matching model,classify PECs via K-means clustering according to the consistency in PLI matching degree evolution,and summarize the typical development patterns of PECs.Results indicate that the PLI matching degree of PECs in China increased substantially from 2015 to 2020,particularly in eastern areas,while the western region,including the Qinghai-Xizang Plateau and southwestern Xinjiang,shows untapped potential for improvement.Five types of PECs are identified,with the majority(30.1%)showing sustained moderate PLI matching and a minority(9.6%)experiencing long-term PLI mismatch.Industry is the shortfall of various PECs,and effective strategies to facilitate all types of PECs include the development of emerging businesses and the expansion of secondary and tertiary industries.Additionally,enriching rural labor force and increasing farmland use efficiency are essential for optimal PLI matching and positive interaction,ultimately ensuring poverty elimination and sustainable development.
文摘SHANGHAI is blazing a new development track powered by dual engines:one is intelligent manufacturing empowered by cutting-edge technologies,and the other is green development driven by lowcarbon and energy-saving solutions.On September 10,China Today visited two enterprises in Shanghai–Shanghai Schneider Electric Industrial Control Co.,Ltd.and Huaqin Technology Co.,Ltd.–to observe firsthand how global investment and local innovation are jointly shaping Shanghai’s future of high-quality development.
文摘On June 3,Scopus,a database owned by Elsevier,released CiteScore 2024 metrics for academic journal evaluation.Both the Chinese and English editions of Petroleum Exploration and Development achieved record highs in the past year,ranking among the top in various categories.The CiteScore of the Chinese edition increased to 9.9 in 2024 from 8.4 in 2023,ranking 13th out of 330 journals in the Earth and Planetary Sciences:Geology category and 2lst out of 239 journals in the Earth and Planetary Sciences:Geotechnical Engineering and Engineering Geology category.
基金supported by the National Natural Science Foundation of China(32001912 and 32370525)the Henan Provincial Natural Science Foundation,China(232300420012)。
文摘The ecdysone-induced transcription factor E93 in model insects plays multiple roles in the insect metamorphosis processes,such as remodeling larval tissues and determining adult tissue formation.The knockdown of E93in insects leads to incomplete metamorphosis,suggesting that E93 is a potential target for pest control.In this study,the HaE93 gene in the cotton bollworm Helicoverpa armigera,a polyphagous pest of various commercial crops worldwide,was identified and found to have high expression in the egg,prepupal,and pupal stages.The injection of ds HaE93 induced about 60%mortality in H.armigera at the larval-pupal stage.About 30%survived but showed delayed pupation and abnormal wings,and the females developed reduced ovaries.Therefore,about 90%of the HaE93 knockdown individuals failed to reproduce before they died.The results of qRT-PCR showed that the expression levels of ecdysone primary-response genes,chitin synthesis-related genes,and wing and ovary development-related genes were reduced in HaE93 knockdown H.armigera.These results indicated that HaE93plays a critical role in larva-pupa-adult metamorphosis and the development of the cuticle,wing,and ovary in female H.armigera by regulating the expression of the associated genes.Bioassays of ds HaE93 administered by either oral delivery or injection showed similar knockdown results,which suggested that HaE93 can be used as a target gene for the RNAi control of the pest H.armigera.
基金fund support was received from National Social Science Fund of China[Grant No.23BJL010].
文摘Exploring the specific environmental impacts and mechanisms of China’s sustainable development pilot policy can enrich and expand China’s institutional and practical experiences,offering valuable insights and references for advancing global environmental sustainability.This study selects the National Innovation Demonstration Zone for Sustainable Development Agenda(NIDZSDA)as the sample and empirically evaluates the effects of the policy on urban environmental quality,using panel data from 74 prefecture-level cities in China between 2006 and 2020.The findings indicate that the sustainable development policy significantly improves urban environmental quality.Two key mechanisms identified are the aggregation of high-quality talent and the enhancement of technological innovation capabilities.Furthermore,the policy exhibits heterogeneous effects across different types of cities,with more pronounced improvements observed in mega and super cities,as well as in resource-based cities.
基金sponsored by the National Natural Science Foundation of China,China(No.42272171)National Science and Technology Major Project of China,China(No.2017ZX05036).
文摘Dongyuemiao Member shale in the Sichuan Basin,China,is characterized by organic-rich shale intervals with different types of interbeds and accumulation modes.The aim of this study is to elucidate the impact of paleoenvironmental indicators on interbed development.With this aim in mind,we established an interbed classification scheme and quantified the development of different types of interbeds and their frequencies.We categorized the shale interbeds into three types based on interbed type:silt interbeds(SIs),shell fragment interbeds(SFIs),and shell skeleton interbeds(SSIs).The SIs,SFIs,and SSIs are respectively the products of extrabasinal low-density turbidity currents,intrabasinal debris flow,and intrabasinal low-density turbidity currents.We propose that variations in paleoenvironmental conditions primarily influenced the types of interbeds that developed but had minimal impact on the frequency of their development.Models depicting the interbed development within the 1st Submember of Dongyuemiao Member indicate that during the early Dongyuemiao depositional period,under conditions of relatively aridity,weak weathering,high terrigenous input,and strong hydrodynamic activity,SSIs were well developed.In the middle depositional period,as the climate gradually transitioned to more humid conditions,and the weathering intensity and amount of terrestrial input increased,the development of SIs and SFIs significantly increased.During the late depositional period,with a continuous decrease in terrestrial inputs and sedimentation rates,the development of SIs decreased while that of SSIs increased.
文摘As decarbonization pressure on traditional fossil fuel-related industries gradually intensifies,CCUS has been increasingly incorporated into energy transition strategies by various oil companies.From a development opportunity perspective,oil companies possess four key advantages in developing the CCUS industry:exploration and development technology advantages;geological resource advantages;capital advantages;source-sink matching advantages.In terms of challenges,oil companies face numerous issues in developing the CCUS industry,including technological development,economic viability,and policy and legal aspects.At the national level,China’s oil companies should advocate for improving and optimizing relevant laws and regulations,enhancing the policy support system,incorporating CCUS into the carbon trading market,and strengthening top-level design and medium-to long-term planning;at the enterprise level,they should continuously advance full industrial chain technologies and reduce CCUS project operating costs,selectively participate in industrial segments that suit their capabilities,strengthen CCUS full industrial chain operational capabilities,and enhance talent development and strengthen international exchange and cooperation.
