With the accelerating aging process of China’s population,the demand for community elderly care services has shown diversified and personalized characteristics.However,problems such as insufficient total care service...With the accelerating aging process of China’s population,the demand for community elderly care services has shown diversified and personalized characteristics.However,problems such as insufficient total care service resources,uneven distribution,and prominent supply-demand contradictions have seriously affected service quality.Big data technology,with core advantages including data collection,analysis and mining,and accurate prediction,provides a new solution for the allocation of community elderly care service resources.This paper systematically studies the application value of big data technology in the allocation of community elderly care service resources from three aspects:resource allocation efficiency,service accuracy,and management intelligence.Combined with practical needs,it proposes optimal allocation strategies such as building a big data analysis platform and accurately grasping the elderly’s care needs,striving to provide operable path references for the construction of community elderly care service systems,promoting the early realization of the elderly care service goal of“adequate support and proper care for the elderly”,and boosting the high-quality development of China’s elderly care service industry.展开更多
Owing to the emergence of drug resistance and high morbidity,the need for novel antiviral drugs with novel targets is highly sought after.Marine-derived compounds mostly possess potent antiviral activity and serve as ...Owing to the emergence of drug resistance and high morbidity,the need for novel antiviral drugs with novel targets is highly sought after.Marine-derived compounds mostly possess potent antiviral activity and serve as a primary source for developing novel antiviral drugs,making the rapid discovery and evaluation of marine antiviral agents particularly crucial.Thus,future research should place greater emphasis on the identification of novel antiviral targets through the combination of artificial intelligence(AI)and structural pharmacology,as well as expanding the marine resource and target databases.展开更多
As a major source of freshwater in Central Asia,Tajikistan is endowed with abundant glaciers and water resources.However,the country faces multiple challenges,including accelerated glacier retreat,complex inter-govern...As a major source of freshwater in Central Asia,Tajikistan is endowed with abundant glaciers and water resources.However,the country faces multiple challenges,including accelerated glacier retreat,complex inter-government water resource management,and inefficient water use.Existing research has predominantly focused on individual hydrological processes,such as glacier retreat,snow cover change,or transboundary water issues,but it has yet to fully capture the overall complexity of water system.Tajikistan’s water system functions as an integrated whole from mountain runoff to downstream supply,but a comprehensive study of its water resource has yet to be conducted.To address this research gap,this study systematically examined the status,challenges,and sustainable management strategies of Tajikistan’s water resources based on a literature review,remote sensing data analysis,and case studies.Despite Tajikistan’s relative abundance of water resources,global warming is accelerating glacier melting and altering the hydrological cycles,which have resulted in unstable runoff patterns and heightened risks of extreme events.In Tajikistan,outdated infrastructure and poor management are primary causes of low water-use efficiency in the agricultural sector,which accounts for 85.00%of the total water withdrawals.At the governance level,Tajikistan faces challenges in balancing the water-energy-food nexus and transboundary water resource issues.To address these issues,this study proposes core paths for Tajikistan to achieve sustainable water resource management,such as accelerating technological innovation,promoting water-saving agricultural technologies,improving water resource utilization efficiency,and establishing a community participation-based comprehensive management framework.Additionally,strengthening cross-border cooperation and improving real-time monitoring systems have been identified as critical steps to advance sustainable water resource utilization and evidence-based decision-making in Tajikistan and across Central Asia.展开更多
Mineral resources in Asia continent and its mining industry play a significant role in the economic growth and industrialization of both Asia and the world.Asia continent boasts the most comprehensive kinds of mineral...Mineral resources in Asia continent and its mining industry play a significant role in the economic growth and industrialization of both Asia and the world.Asia continent boasts the most comprehensive kinds of minerals,with reserves of at least 38 of over 80 widely used minerals worldwide accounting for more than30%of the global total reserves.Asia continent experienced three main tectonic evolution and mineralization stages:The Precambrian,the Paleozoic,and the Mesozoic to Cenozoic.The abundant mineral resources in this continent can be divided into seven first-order metallogenic belts(metallogenic domains),18 second-order metallogenic belts(metallogenic provinces),61 third-order metallogenic belts(metallogenic zones),and nine main minerogenetic series.Asia continent exhibits the most significant metallogenic specialization among all continents.Specifically,granite belts of Asia continent manifest pronounced metallogenic specialization of tin,rare metals,and porphyry Cu-Au-Mo deposits.Its maficultramafic rock belts and ophiolite belts display notable metallogenic specialization of lateritic nickel deposits and magmatic type chromite deposits,while its Mesozoic to Cenozoic basalt belts show remarkable metallogenic specialization of lateritic bauxite deposits.Consequently,many giant metallogenic belts were formed,including the Southeast Asian tin belt,the Qinghai-Xizang Plateau rare metal metallogenic belt,the Tethyan porphyry Cu-Au-Mo metallogenic belt,the circum-Pacific porphyry Cu-Au-Mo metallogenic belt,the Southeast Asian lateritic bauxite metallogenic belt,the Deccan Plateau lateritic bauxite metallogenic belt in India,the Southeast Asian lateritic nickel metallogenic belt,and the Tethyan magmatic type chromite metallogenic belt—all of which are significant metallogenic belts in Asia continent.Future mineral exploration in Asia should focus primarily on the Precambrian mineralization of ancient cratons,the Paleozoic mineralization of the Central Asian-Mongolian orogenic belt,and the Mesozoic to Cenozoic mineralization of the Tethyan and circum-Pacific mobile belts.Asia's mining industry not only underpins its own economic growth but also propels global economic development and industrialization,contributing significantly to the world economy.Asia boasts the highest production value of minerals,the largest annual production of minerals,and the greatest trade value of mineral products among all the continents,having emerged as the trade center of global mineral products and the center of the mining industry economy.China is identified as one of the few countries that possess the most comprehensive kinds of minerals,and its mining industry has supported and driven the economic development and industrialization of Asia and even the world.Standing as the largest mineral producer worldwide,China ranked first in the production of 28 mineral commodities in the world in 2022.Besides,China exhibits the highest annual production value of minerals and the largest trade value of mineral products among all countries.Therefore,China's demand for global mineral products influences the global supply and demand patterns of minerals and the world economic situation.展开更多
Based on new understandings of the whole petroleum system theory for coal measures,and utilizing data from coal-rock gas wells and other oil and gas wells in numerous pilot test areas for key parameter validation,this...Based on new understandings of the whole petroleum system theory for coal measures,and utilizing data from coal-rock gas wells and other oil and gas wells in numerous pilot test areas for key parameter validation,this study conducted a national resource assessment of coal-rock gas widely developed in marine-continental transitional and continental strata in major petroliferous basins like Ordos,Sichuan and Junggar in China.The main achievements and understandings were obtained as follows.(1)A resource evaluation methodology for coal-rock gas was established,incorporating varying geological/data conditions.(2)Key parameter thresholds for deep coal-rock gas resource evaluation were defined,including the upper limits of critical depth(1500,2000,2500 m),lower limit of reservoir thickness(1 m),and lower limits of gas content in medium-low rank and medium-high rank coals(2,10 m^(3)/t),depending on varying geological conditions across basins.(3)Methods for determining key parameters such as gas content,porosity,and technical recovery factor were developed using the basic data from coal-rock gas experiments/tests and logging.(4)Evaluation results indicate that the geological resources of coal-rock gas in the 14 major basins of onshore China amount to 55.11×10^(12) m^(3).Resources at depths of 1500-3000,3000-5000,5000-6000 m account for 50.29%,43.11%,6.60%of the total,respectively.Resource classification shows that Class Ⅰ,Ⅱ,and Ⅲ resources constitute 21.80%,32.76%,45.44%,with the Class Ⅰ and Ⅱ technically recoverable resources of approximately 13.23×10^(12) m^(3).(5)The Ordos Basin remains the most favorable province,while the Sichuan,Junggar and Tarim basins are the promising targets,for future exploration and development of coal-rock gas in the country.Other basins including Bohai Bay,Qaidam,Tuha,Songliao and Hailar are considered as prospective options.Coal-rock gas production is expected to reach 500×10^(8) m^(3) annually within the next 10-15 years,positioning it as a major contributor to the natural gas production growth of China and a crucial alternative resource for ensuring the national gas supply.展开更多
The pivotal role of complex numbers in quantum mechanics underpins the resource theory of imaginarity.We investigate imaginarity dynamics in a single-qubit open system coupled to a non-Markovian environment.Crucially,...The pivotal role of complex numbers in quantum mechanics underpins the resource theory of imaginarity.We investigate imaginarity dynamics in a single-qubit open system coupled to a non-Markovian environment.Crucially,cavity field detuning emerges as the dominant regulator,driving continuous conversion between the real and imaginary components of coherence.Nonzero detuning induces characteristic non-periodic oscillations of imaginarity between zero and maximal values,preventing complete decoherence at specific times.We establish that imaginarity resources stem from both intrinsic system evolution and environmental feedback.Significantly,detuning-driven imaginarity generation persists even in Markovian regimes,demonstrating its origin beyond environmental memory effects.These insights offer new perspectives for understanding and harnessing quantum coherence.展开更多
The rich resources and unique environment of the Moon make it an ideal location for human expansion and the utilization of extraterrestrial resources.Oxygen,crucial for supporting human life on the Moon,can be extract...The rich resources and unique environment of the Moon make it an ideal location for human expansion and the utilization of extraterrestrial resources.Oxygen,crucial for supporting human life on the Moon,can be extracted from lunar regolith,which is highly rich in oxygen and contains polymetallic oxides.This oxygen and metal extraction can be achieved using existing metallurgical techniques.Furthermore,the ample reserves of water ice on the Moon offer another means for oxygen production.This paper offers a detailed overview of the leading technologies for achieving oxygen production on the Moon,drawing from an analysis of lunar resources and environmental conditions.It delves into the principles,processes,advantages,and drawbacks of water-ice electrolysis,two-step oxygen production from lunar regolith,and one-step oxygen production from lunar regolith.The two-step methods involve hydrogen reduction,carbothermal reduction,and hydrometallurgy,while the one-step methods encompass fluorination/chlorination,high-temperature decomposition,molten salt electrolysis,and molten regolith electrolysis(MOE).Following a thorough comparison of raw materials,equipment,technology,and economic viability,MOE is identified as the most promising approach for future in-situ oxygen production on the Moon.Considering the corrosion characteristics of molten lunar regolith at high temperatures,along with the Moon's low-gravity environment,the development of inexpensive and stable inert anodes and electrolysis devices that can easily collect oxygen is critical for promoting MOE technology on the Moon.This review significantly contributes to our understanding of in-situ oxygen production technologies on the Moon and supports upcoming lunar exploration initiatives.展开更多
[Objective]The channel straightening project of the Pinglu Canal has fragmented the river course,compromising the integrity of original river course and causing ecosystem patchiness.Understanding the current status of...[Objective]The channel straightening project of the Pinglu Canal has fragmented the river course,compromising the integrity of original river course and causing ecosystem patchiness.Understanding the current status of fish resources and the characteristics of their diversity is crucial for the ecological management of the Pinglu Canal.[Methods]During the spring and autumn in 2021 and 2022,a survey of fish resources and species diversity in the Pinglu Canal was conducted using multi-mesh gill nets.A total of 125 fish species were collected,belonging to 10 orders,34 families,and 89 genera.[Results]The result showed that the Pinglu Canal contained three nationally protected Class II species,two endemic species of the Qinjiang River,three anadromous/migratory species,and eight invasive species,accounting for 2.4%,1.6%,2.4%,and 6.4%of the total species,respectively.The fish community primarily consisted of mid-and bottom-dwelling,adhesive-egg-laying,and omnivorous species.The Shannon-Wiener,Simpson,Margalef,and Pielou indices of the fish community in the Pinglu Canal ranged from 2.347 to 2.757,0.081 to 0.151,3.493 to 4.382,and 0.812 to 0.892,respectively.These indices showed relatively uniform distribution across different river reaches.[Conclusion]The result indicate that the fish community structure in the Pinglu Canal is relatively uniform.The reach from the Yujiang River to the Shaping River shows higher stability,while other river reaches experience moderate or severe disturbances.This study provides supplementary baseline data on the fish community structure in the Pinglu Canal and explores the potential impact of inter-basin connectivity on fish resources,aiming to provide a scientific basis for habitat restoration assessments after the channel straightening project.展开更多
Multiparent advanced generation inter-cross(MAGIC)populations improve the accuracy of quantitative trait loci mapping compared to biparental populations by increasing diversity and reducing linkage disequilibrium betw...Multiparent advanced generation inter-cross(MAGIC)populations improve the accuracy of quantitative trait loci mapping compared to biparental populations by increasing diversity and reducing linkage disequilibrium between variants.Here we describe the development of two MAGIC populations derived from a cross of 11 founder lines from the INTA(National Institute for Agricultural Technology in Argentina)sunflower breeding program.The founder lines are fertility maintainer inbred lines that exhibit genetic diversity in several traits,including flowering cycle,plant architecture,disease resistance,oil content and oil quality.The crossing scheme applied follows the design of two-way,four-way and eight-way crosses with a modification to increase the number of recombinations and shorten the linkage disequilibrium.Phenotyping a subset of F_(2)families and F_5 lines for different traits shows an increase in the diversity of the analyzed traits compared to the parental lines.In addition,we identified lines with transgressive segregation for Sunflower Verticillium Wilt resistance.These results confirm that the MAGIC populations will serve as unique genetic and genomic resources to better characterize the genetics of complex traits and identify potentially superior alleles for sunflower breeding.It will also enrich the gene pool of fertility maintainers(A/B line)of the sunflower germplasm and facilitate the introduction of new breeding methods to select female parents for use in AxR combinations to obtain superior sunflower hybrids.展开更多
Plant germplasm resources is the material foundation and key point for agricultural production, crop breeding and bioengineering. China is one of the centers for the origin of the cultivated plants worldwide, as well ...Plant germplasm resources is the material foundation and key point for agricultural production, crop breeding and bioengineering. China is one of the centers for the origin of the cultivated plants worldwide, as well as one of the countries with most abundant plant resources and the highest biodiversity. Strengthening research in the conservation and utilization of plant germplasm resources is of significant value and importance. In this study, the present status of conservation, utilization, and existing problems of plant germplasm resources in China and around the world were reviewed; further, through analyzing measures taken by global countries for plant germplasm resources protection, countermeasures for plant germplasm resources conservation in China were also presented from three aspects, namely, collection and conservation, information network construction and national legislation and policies.展开更多
Due to its unique properties,helium is critical in scientific research and industrial innovation,particularly in cryogenics;however,its scarcity necessitates efficient resource utilization.Through a review of the hist...Due to its unique properties,helium is critical in scientific research and industrial innovation,particularly in cryogenics;however,its scarcity necessitates efficient resource utilization.Through a review of the historical development of the helium industry,this study comprehensively evaluates the value,sources,production methods,supply dynamics,and sustainability challenges of helium.The processes and mechanisms of helium enrichment,along with effective exploration methods,are systematically analyzed here.We recommend focusing on the development of technologies for helium preservation,recovery,and extraction,particularly the extraction technology for helium-poor fields.Market analysis indicates that no imminent crisis in the global helium supply is expected before 2060.Thus,enhancing helium resource protection technologies is essential to improve its economic utilization and management while providing a timely reference for the scientific community.展开更多
The polar regions host one of the harshest and most unique ecosystems on Earth.These habitats,encompassing the Arctic and the Antarctic and from deep-marine sediments to glacial ice/ice sheets,represent one of the fin...The polar regions host one of the harshest and most unique ecosystems on Earth.These habitats,encompassing the Arctic and the Antarctic and from deep-marine sediments to glacial ice/ice sheets,represent one of the final frontiers of terrestrial biological exploration.Traditionally viewed as desolate,ice-covered lands,polar regions are now recognized as vibrant,complex,and highly sensitive ecosystems.展开更多
Soybean(Glycine max)is a vital foundation of global food security,providing a primary source of highquality protein and oil for human consumption and animal feed.The rising global population has significantly increase...Soybean(Glycine max)is a vital foundation of global food security,providing a primary source of highquality protein and oil for human consumption and animal feed.The rising global population has significantly increased the demand for soybeans,emphasizing the urgency of developing high-yield,stresstolerant,and nutritionally superior cultivars.The extensive collection of soybean germplasm resources—including wild relatives,landraces,and cultivars—represents a valuable reservoir of genetic diversity critical for breeding advancements.Recent breakthroughs in genomic technologies,particularly highthroughput sequencing and multi-omics approaches,have revolutionized the identification of key genes associated with essential agronomic traits within these resources.These innovations enable precise and strategic utilization of genetic diversity,empowering breeders to integrate traits that improve yield potential,resilience to biotic and abiotic stresses,and nutritional quality.This review highlights the critical role of genetic resources and omics-driven innovations in soybean breeding.It also offers insights into strategies for accelerating the development of elite soybean cultivars to meet the growing demands of global soybean production.展开更多
Under the background of competency-based transformation of higher education,bioengineering major urgently needs to solve the problems such as the disconnect between practical teaching and industry needs and the lack o...Under the background of competency-based transformation of higher education,bioengineering major urgently needs to solve the problems such as the disconnect between practical teaching and industry needs and the lack of resources.This paper proposed supplementing traditional experimental teaching with video resources to construct a closed-loop model of"theoretical instruction,case analysis,video demonstration,and reflective application".Through the development of instructional videos covering core techniques such as PCR,Western blot,CRISPR-Cas9,cell culture,HPLC,GMP operations,and bioinformatics analysis,teaching costs can be reduced,spatiotemporal constraints can be overcome,and process visualization can be enhanced,thereby supporting students in mastering the entire workflow of modern biomanufacturing.The paper further explored resource development pathways,university-enterprise collaboration mechanisms,and curriculum integration strategies,offering actionable solutions for practical teaching reform.展开更多
The Polar Regions host one of the harshest and most unique ecosystems on Earth,harboring a diverse array of micro-and macro-organisms.These inhabitants showcase remarkable taxonomic and genetic originality,presenting ...The Polar Regions host one of the harshest and most unique ecosystems on Earth,harboring a diverse array of micro-and macro-organisms.These inhabitants showcase remarkable taxonomic and genetic originality,presenting unparalleled opportunities for bioprospecting,alongside demonstrating extraordinary adaptation mechanisms for survival.Furthermore,polar organisms play crucial roles in facilitating organic matter decomposition,carbon fixation and sequestration,and biogeochemical cycling.Moreover,these organisms serve as pivotal indicators of global climate shifts.Therefore,exploring the polar organisms and ecosystem holds profound and significant implications for gaining deeper insights into scientific frontiers such as global biodiversity,elementary cycling,climate change,resource utilization,and the awe of life in extreme environments.展开更多
This paper aims to investigate the effect of SME’s resources including,financial resources(FRR),financial literacy(FLR),managerial capacities(MCR)and market orientation(MKR)on SME’s sustainable growth(SG)in both fin...This paper aims to investigate the effect of SME’s resources including,financial resources(FRR),financial literacy(FLR),managerial capacities(MCR)and market orientation(MKR)on SME’s sustainable growth(SG)in both financial SG(FSGE)and non-financial SG(NFSGE)terms;and to identify the technological innovation awareness(TIR)mediates the effect of these resources on SGSMEs.Data were collected from 517 SMEs,using survey method and adopted a random sampling technique.Structure Equation Model(SEM)and the Baron,and Kenny(1986)mediation approach,Amos was applied to test hypotheses.The findings revealed the resources contributed 41.9 percent and 32.9 percent of the variance in FSGE and NFSGE,respectively,and confirmed the mediating role of TIR in the relationship between resources and SG.Notably,FRR had an indirect effect on FSGE through TIR,although TIR partially mediated the relationship between FRR and NFSGE,and between FLR and SG,both in FSGE and NFSGE terms.While,TIR fully mediated the relationship between MKR and SG,both in FSGE and NFSGE terms as well.This evidence informs the importance of business resources and competencies.In particular,TIR plays an important role in business operations to enhance and maintain sustainable growth.展开更多
Economic growth affects natural resources and the environment directly and indirectly;however,the exact role that natural resources play in environmental sustainability remains unknown.This paper revisits the relation...Economic growth affects natural resources and the environment directly and indirectly;however,the exact role that natural resources play in environmental sustainability remains unknown.This paper revisits the relationship between natural resources and CO_(2)emissions by considering the role of green finance vis-à-vis the aggregated and disaggregated analysis.Empirical panel data estimation analyzes a sample of emerging countries over the 2001-2019 period using the recently developed econometric cross-sectional auto-regressive distributed lag(CS-ARDL)technique.The findings show that natural resource components(natural gas,mineral rent,oil rent,and coal rent)are negatively associated with environmental pollution.In contrast,overall natural resource consumption helps reduce carbon emissions.However,we find that green finance contributes to carbon emission reduction.In contrast,education causes pollution by contributing to carbon emissions.We offer policy recommendations about the effectiveness of green financing for the sustainable use of natural resources in diminishing pollution.展开更多
This study focuses on the risks associated with the on-balance sheet recognition of data resources.At the legal level,disputes over ownership often arise due to unclear data property rights,while privacy protection,cy...This study focuses on the risks associated with the on-balance sheet recognition of data resources.At the legal level,disputes over ownership often arise due to unclear data property rights,while privacy protection,cybersecurity,and cross-border data flows create additional compliance challenges.In terms of recognition,the subjectivity of traditional valuation methods,the lack of active markets,and the rapid depreciation of data value caused by technological iteration hinder reliable measurement.With respect to disclosure,organizations face a dilemma between transparency and confidentiality.Collectively,these issues exacerbate audit risks.It is therefore imperative to establish an appropriate legal,accounting,and auditing framework to mitigate such risks and remove barriers to the proper recognition of data assets on balance sheets.展开更多
The integration of substantial renewable energy and controllable resources disrupts the supply-demand balance in distribution grids.Secure operations are dependent on the participation of user-side resources in demand...The integration of substantial renewable energy and controllable resources disrupts the supply-demand balance in distribution grids.Secure operations are dependent on the participation of user-side resources in demand response at both the day-ahead and intraday levels.Current studies typically overlook the spatial--temporal variations and coordination between these timescales,leading to significant day-ahead optimization errors,high intraday costs,and slow convergence.To address these challenges,we developed a multiagent,multitimescale aggregated regulation method for spatial--temporal coordinated demand response of user-side resources.Firstly,we established a framework considering the spatial--temporal coordinated characteristics of user-side resources with the objective to min-imize the total regulation cost and weighted sum of distribution grid losses.The optimization problem was then solved for two different timescales:day-ahead and intraday.For the day-ahead timescale,we developed an improved particle swarm optimization(IPSO)algo-rithm that dynamically adjusts the number of particles based on intraday outcomes to optimize the regulation strategies.For the intraday timescale,we developed an improved alternating direction method of multipliers(IADMM)algorithm that distributes tasks across edge distribution stations,dynamically adjusting penalty factors by using historical day-ahead data to synchronize the regulations and enhance precision.The simulation results indicate that this method can fully achieve multitimescale spatial--temporal coordinated aggregated reg-ulation between day-ahead and intraday,effectively reduce the total regulation cost and distribution grid losses,and enhance smart grid resilience.展开更多
文摘With the accelerating aging process of China’s population,the demand for community elderly care services has shown diversified and personalized characteristics.However,problems such as insufficient total care service resources,uneven distribution,and prominent supply-demand contradictions have seriously affected service quality.Big data technology,with core advantages including data collection,analysis and mining,and accurate prediction,provides a new solution for the allocation of community elderly care service resources.This paper systematically studies the application value of big data technology in the allocation of community elderly care service resources from three aspects:resource allocation efficiency,service accuracy,and management intelligence.Combined with practical needs,it proposes optimal allocation strategies such as building a big data analysis platform and accurately grasping the elderly’s care needs,striving to provide operable path references for the construction of community elderly care service systems,promoting the early realization of the elderly care service goal of“adequate support and proper care for the elderly”,and boosting the high-quality development of China’s elderly care service industry.
文摘Owing to the emergence of drug resistance and high morbidity,the need for novel antiviral drugs with novel targets is highly sought after.Marine-derived compounds mostly possess potent antiviral activity and serve as a primary source for developing novel antiviral drugs,making the rapid discovery and evaluation of marine antiviral agents particularly crucial.Thus,future research should place greater emphasis on the identification of novel antiviral targets through the combination of artificial intelligence(AI)and structural pharmacology,as well as expanding the marine resource and target databases.
基金supported by the National Natural Science Foundation of China(W2412135)the Youth Innovation Promotion Association of the Chinese Academy of Sciences.
文摘As a major source of freshwater in Central Asia,Tajikistan is endowed with abundant glaciers and water resources.However,the country faces multiple challenges,including accelerated glacier retreat,complex inter-government water resource management,and inefficient water use.Existing research has predominantly focused on individual hydrological processes,such as glacier retreat,snow cover change,or transboundary water issues,but it has yet to fully capture the overall complexity of water system.Tajikistan’s water system functions as an integrated whole from mountain runoff to downstream supply,but a comprehensive study of its water resource has yet to be conducted.To address this research gap,this study systematically examined the status,challenges,and sustainable management strategies of Tajikistan’s water resources based on a literature review,remote sensing data analysis,and case studies.Despite Tajikistan’s relative abundance of water resources,global warming is accelerating glacier melting and altering the hydrological cycles,which have resulted in unstable runoff patterns and heightened risks of extreme events.In Tajikistan,outdated infrastructure and poor management are primary causes of low water-use efficiency in the agricultural sector,which accounts for 85.00%of the total water withdrawals.At the governance level,Tajikistan faces challenges in balancing the water-energy-food nexus and transboundary water resource issues.To address these issues,this study proposes core paths for Tajikistan to achieve sustainable water resource management,such as accelerating technological innovation,promoting water-saving agricultural technologies,improving water resource utilization efficiency,and establishing a community participation-based comprehensive management framework.Additionally,strengthening cross-border cooperation and improving real-time monitoring systems have been identified as critical steps to advance sustainable water resource utilization and evidence-based decision-making in Tajikistan and across Central Asia.
基金funded by geological survey project of China Geological Survey(DD20211404)。
文摘Mineral resources in Asia continent and its mining industry play a significant role in the economic growth and industrialization of both Asia and the world.Asia continent boasts the most comprehensive kinds of minerals,with reserves of at least 38 of over 80 widely used minerals worldwide accounting for more than30%of the global total reserves.Asia continent experienced three main tectonic evolution and mineralization stages:The Precambrian,the Paleozoic,and the Mesozoic to Cenozoic.The abundant mineral resources in this continent can be divided into seven first-order metallogenic belts(metallogenic domains),18 second-order metallogenic belts(metallogenic provinces),61 third-order metallogenic belts(metallogenic zones),and nine main minerogenetic series.Asia continent exhibits the most significant metallogenic specialization among all continents.Specifically,granite belts of Asia continent manifest pronounced metallogenic specialization of tin,rare metals,and porphyry Cu-Au-Mo deposits.Its maficultramafic rock belts and ophiolite belts display notable metallogenic specialization of lateritic nickel deposits and magmatic type chromite deposits,while its Mesozoic to Cenozoic basalt belts show remarkable metallogenic specialization of lateritic bauxite deposits.Consequently,many giant metallogenic belts were formed,including the Southeast Asian tin belt,the Qinghai-Xizang Plateau rare metal metallogenic belt,the Tethyan porphyry Cu-Au-Mo metallogenic belt,the circum-Pacific porphyry Cu-Au-Mo metallogenic belt,the Southeast Asian lateritic bauxite metallogenic belt,the Deccan Plateau lateritic bauxite metallogenic belt in India,the Southeast Asian lateritic nickel metallogenic belt,and the Tethyan magmatic type chromite metallogenic belt—all of which are significant metallogenic belts in Asia continent.Future mineral exploration in Asia should focus primarily on the Precambrian mineralization of ancient cratons,the Paleozoic mineralization of the Central Asian-Mongolian orogenic belt,and the Mesozoic to Cenozoic mineralization of the Tethyan and circum-Pacific mobile belts.Asia's mining industry not only underpins its own economic growth but also propels global economic development and industrialization,contributing significantly to the world economy.Asia boasts the highest production value of minerals,the largest annual production of minerals,and the greatest trade value of mineral products among all the continents,having emerged as the trade center of global mineral products and the center of the mining industry economy.China is identified as one of the few countries that possess the most comprehensive kinds of minerals,and its mining industry has supported and driven the economic development and industrialization of Asia and even the world.Standing as the largest mineral producer worldwide,China ranked first in the production of 28 mineral commodities in the world in 2022.Besides,China exhibits the highest annual production value of minerals and the largest trade value of mineral products among all countries.Therefore,China's demand for global mineral products influences the global supply and demand patterns of minerals and the world economic situation.
基金Supported by the National Science and Technology Major Project(2025ZD1404200)Research Project of PetroChina Company Limited(2024DJ23)Scientific Research and Technology Development Project of PetroChina Research Institute of Petroleum Exploration&Development(2024vzz).
文摘Based on new understandings of the whole petroleum system theory for coal measures,and utilizing data from coal-rock gas wells and other oil and gas wells in numerous pilot test areas for key parameter validation,this study conducted a national resource assessment of coal-rock gas widely developed in marine-continental transitional and continental strata in major petroliferous basins like Ordos,Sichuan and Junggar in China.The main achievements and understandings were obtained as follows.(1)A resource evaluation methodology for coal-rock gas was established,incorporating varying geological/data conditions.(2)Key parameter thresholds for deep coal-rock gas resource evaluation were defined,including the upper limits of critical depth(1500,2000,2500 m),lower limit of reservoir thickness(1 m),and lower limits of gas content in medium-low rank and medium-high rank coals(2,10 m^(3)/t),depending on varying geological conditions across basins.(3)Methods for determining key parameters such as gas content,porosity,and technical recovery factor were developed using the basic data from coal-rock gas experiments/tests and logging.(4)Evaluation results indicate that the geological resources of coal-rock gas in the 14 major basins of onshore China amount to 55.11×10^(12) m^(3).Resources at depths of 1500-3000,3000-5000,5000-6000 m account for 50.29%,43.11%,6.60%of the total,respectively.Resource classification shows that Class Ⅰ,Ⅱ,and Ⅲ resources constitute 21.80%,32.76%,45.44%,with the Class Ⅰ and Ⅱ technically recoverable resources of approximately 13.23×10^(12) m^(3).(5)The Ordos Basin remains the most favorable province,while the Sichuan,Junggar and Tarim basins are the promising targets,for future exploration and development of coal-rock gas in the country.Other basins including Bohai Bay,Qaidam,Tuha,Songliao and Hailar are considered as prospective options.Coal-rock gas production is expected to reach 500×10^(8) m^(3) annually within the next 10-15 years,positioning it as a major contributor to the natural gas production growth of China and a crucial alternative resource for ensuring the national gas supply.
基金support of the Tianchi Talented Young Doctoral Fund Project and Huyang Talent Research Startup Fund Project of Tarim University(Project Number:TDZKSS202511).
文摘The pivotal role of complex numbers in quantum mechanics underpins the resource theory of imaginarity.We investigate imaginarity dynamics in a single-qubit open system coupled to a non-Markovian environment.Crucially,cavity field detuning emerges as the dominant regulator,driving continuous conversion between the real and imaginary components of coherence.Nonzero detuning induces characteristic non-periodic oscillations of imaginarity between zero and maximal values,preventing complete decoherence at specific times.We establish that imaginarity resources stem from both intrinsic system evolution and environmental feedback.Significantly,detuning-driven imaginarity generation persists even in Markovian regimes,demonstrating its origin beyond environmental memory effects.These insights offer new perspectives for understanding and harnessing quantum coherence.
基金financially supported by the National Natural Science Foundation of China(Nos.52404328,52274412,and 52374418)the China Postdoctoral Science Foundation(No.2024M753248)。
文摘The rich resources and unique environment of the Moon make it an ideal location for human expansion and the utilization of extraterrestrial resources.Oxygen,crucial for supporting human life on the Moon,can be extracted from lunar regolith,which is highly rich in oxygen and contains polymetallic oxides.This oxygen and metal extraction can be achieved using existing metallurgical techniques.Furthermore,the ample reserves of water ice on the Moon offer another means for oxygen production.This paper offers a detailed overview of the leading technologies for achieving oxygen production on the Moon,drawing from an analysis of lunar resources and environmental conditions.It delves into the principles,processes,advantages,and drawbacks of water-ice electrolysis,two-step oxygen production from lunar regolith,and one-step oxygen production from lunar regolith.The two-step methods involve hydrogen reduction,carbothermal reduction,and hydrometallurgy,while the one-step methods encompass fluorination/chlorination,high-temperature decomposition,molten salt electrolysis,and molten regolith electrolysis(MOE).Following a thorough comparison of raw materials,equipment,technology,and economic viability,MOE is identified as the most promising approach for future in-situ oxygen production on the Moon.Considering the corrosion characteristics of molten lunar regolith at high temperatures,along with the Moon's low-gravity environment,the development of inexpensive and stable inert anodes and electrolysis devices that can easily collect oxygen is critical for promoting MOE technology on the Moon.This review significantly contributes to our understanding of in-situ oxygen production technologies on the Moon and supports upcoming lunar exploration initiatives.
文摘[Objective]The channel straightening project of the Pinglu Canal has fragmented the river course,compromising the integrity of original river course and causing ecosystem patchiness.Understanding the current status of fish resources and the characteristics of their diversity is crucial for the ecological management of the Pinglu Canal.[Methods]During the spring and autumn in 2021 and 2022,a survey of fish resources and species diversity in the Pinglu Canal was conducted using multi-mesh gill nets.A total of 125 fish species were collected,belonging to 10 orders,34 families,and 89 genera.[Results]The result showed that the Pinglu Canal contained three nationally protected Class II species,two endemic species of the Qinjiang River,three anadromous/migratory species,and eight invasive species,accounting for 2.4%,1.6%,2.4%,and 6.4%of the total species,respectively.The fish community primarily consisted of mid-and bottom-dwelling,adhesive-egg-laying,and omnivorous species.The Shannon-Wiener,Simpson,Margalef,and Pielou indices of the fish community in the Pinglu Canal ranged from 2.347 to 2.757,0.081 to 0.151,3.493 to 4.382,and 0.812 to 0.892,respectively.These indices showed relatively uniform distribution across different river reaches.[Conclusion]The result indicate that the fish community structure in the Pinglu Canal is relatively uniform.The reach from the Yujiang River to the Shaping River shows higher stability,while other river reaches experience moderate or severe disturbances.This study provides supplementary baseline data on the fish community structure in the Pinglu Canal and explores the potential impact of inter-basin connectivity on fish resources,aiming to provide a scientific basis for habitat restoration assessments after the channel straightening project.
基金supported by a doctoral grant from the National Scientific and Technical Research Council(Consejo Nacional de Investigaciones Científicas y T ecnicas,CONICET)the National Institute of Agricultural Technology(INTA)+1 种基金by projects funded by INTA(CP_2019–2023 I-114,I-127,I-090/2023–2025 I-111,I-87)Agencia Nacional de Promocio n Científica y T ecnica(PICT 2017N?2523)。
文摘Multiparent advanced generation inter-cross(MAGIC)populations improve the accuracy of quantitative trait loci mapping compared to biparental populations by increasing diversity and reducing linkage disequilibrium between variants.Here we describe the development of two MAGIC populations derived from a cross of 11 founder lines from the INTA(National Institute for Agricultural Technology in Argentina)sunflower breeding program.The founder lines are fertility maintainer inbred lines that exhibit genetic diversity in several traits,including flowering cycle,plant architecture,disease resistance,oil content and oil quality.The crossing scheme applied follows the design of two-way,four-way and eight-way crosses with a modification to increase the number of recombinations and shorten the linkage disequilibrium.Phenotyping a subset of F_(2)families and F_5 lines for different traits shows an increase in the diversity of the analyzed traits compared to the parental lines.In addition,we identified lines with transgressive segregation for Sunflower Verticillium Wilt resistance.These results confirm that the MAGIC populations will serve as unique genetic and genomic resources to better characterize the genetics of complex traits and identify potentially superior alleles for sunflower breeding.It will also enrich the gene pool of fertility maintainers(A/B line)of the sunflower germplasm and facilitate the introduction of new breeding methods to select female parents for use in AxR combinations to obtain superior sunflower hybrids.
基金Supported by the Beijing Nova Program(2008B37)the Major Research Program of Beijing Municipal Commission of Science and Technology(D131100000413001)+2 种基金National Key Technologies R&D Program(2012BAK26B03)the Special Fund for Construction of Scientific and Technological Innovation Ability of Beijing Academy of Agriculture and Forestry Sciencesthe Special Research Fund for the Youth of Beijing Academy of Agriculture and Forestry Sciences(QNJJ201211)~~
文摘Plant germplasm resources is the material foundation and key point for agricultural production, crop breeding and bioengineering. China is one of the centers for the origin of the cultivated plants worldwide, as well as one of the countries with most abundant plant resources and the highest biodiversity. Strengthening research in the conservation and utilization of plant germplasm resources is of significant value and importance. In this study, the present status of conservation, utilization, and existing problems of plant germplasm resources in China and around the world were reviewed; further, through analyzing measures taken by global countries for plant germplasm resources protection, countermeasures for plant germplasm resources conservation in China were also presented from three aspects, namely, collection and conservation, information network construction and national legislation and policies.
基金the Strategic Pilot Science and Technology Projects of Chinese Academy of Sciences,China(No.XDC10040000).
文摘Due to its unique properties,helium is critical in scientific research and industrial innovation,particularly in cryogenics;however,its scarcity necessitates efficient resource utilization.Through a review of the historical development of the helium industry,this study comprehensively evaluates the value,sources,production methods,supply dynamics,and sustainability challenges of helium.The processes and mechanisms of helium enrichment,along with effective exploration methods,are systematically analyzed here.We recommend focusing on the development of technologies for helium preservation,recovery,and extraction,particularly the extraction technology for helium-poor fields.Market analysis indicates that no imminent crisis in the global helium supply is expected before 2060.Thus,enhancing helium resource protection technologies is essential to improve its economic utilization and management while providing a timely reference for the scientific community.
文摘The polar regions host one of the harshest and most unique ecosystems on Earth.These habitats,encompassing the Arctic and the Antarctic and from deep-marine sediments to glacial ice/ice sheets,represent one of the final frontiers of terrestrial biological exploration.Traditionally viewed as desolate,ice-covered lands,polar regions are now recognized as vibrant,complex,and highly sensitive ecosystems.
基金supported by the National Key Research and Development Program of China(2022YFF1003301,2023YFF1000101,2022YFE0130200)the Taishan Scholars Program。
文摘Soybean(Glycine max)is a vital foundation of global food security,providing a primary source of highquality protein and oil for human consumption and animal feed.The rising global population has significantly increased the demand for soybeans,emphasizing the urgency of developing high-yield,stresstolerant,and nutritionally superior cultivars.The extensive collection of soybean germplasm resources—including wild relatives,landraces,and cultivars—represents a valuable reservoir of genetic diversity critical for breeding advancements.Recent breakthroughs in genomic technologies,particularly highthroughput sequencing and multi-omics approaches,have revolutionized the identification of key genes associated with essential agronomic traits within these resources.These innovations enable precise and strategic utilization of genetic diversity,empowering breeders to integrate traits that improve yield potential,resilience to biotic and abiotic stresses,and nutritional quality.This review highlights the critical role of genetic resources and omics-driven innovations in soybean breeding.It also offers insights into strategies for accelerating the development of elite soybean cultivars to meet the growing demands of global soybean production.
基金Supported by Undergraduate Education and Teaching Reform Research Project of Chengdu University(XJJG-20242025228)Sichuan Genuine Medicinal Materials and Traditional Chinese Medicine Innovation Team(SCCXTD-2025-19)Sichuan Science and Technology Program(2021YFYZ0012).
文摘Under the background of competency-based transformation of higher education,bioengineering major urgently needs to solve the problems such as the disconnect between practical teaching and industry needs and the lack of resources.This paper proposed supplementing traditional experimental teaching with video resources to construct a closed-loop model of"theoretical instruction,case analysis,video demonstration,and reflective application".Through the development of instructional videos covering core techniques such as PCR,Western blot,CRISPR-Cas9,cell culture,HPLC,GMP operations,and bioinformatics analysis,teaching costs can be reduced,spatiotemporal constraints can be overcome,and process visualization can be enhanced,thereby supporting students in mastering the entire workflow of modern biomanufacturing.The paper further explored resource development pathways,university-enterprise collaboration mechanisms,and curriculum integration strategies,offering actionable solutions for practical teaching reform.
文摘The Polar Regions host one of the harshest and most unique ecosystems on Earth,harboring a diverse array of micro-and macro-organisms.These inhabitants showcase remarkable taxonomic and genetic originality,presenting unparalleled opportunities for bioprospecting,alongside demonstrating extraordinary adaptation mechanisms for survival.Furthermore,polar organisms play crucial roles in facilitating organic matter decomposition,carbon fixation and sequestration,and biogeochemical cycling.Moreover,these organisms serve as pivotal indicators of global climate shifts.Therefore,exploring the polar organisms and ecosystem holds profound and significant implications for gaining deeper insights into scientific frontiers such as global biodiversity,elementary cycling,climate change,resource utilization,and the awe of life in extreme environments.
文摘This paper aims to investigate the effect of SME’s resources including,financial resources(FRR),financial literacy(FLR),managerial capacities(MCR)and market orientation(MKR)on SME’s sustainable growth(SG)in both financial SG(FSGE)and non-financial SG(NFSGE)terms;and to identify the technological innovation awareness(TIR)mediates the effect of these resources on SGSMEs.Data were collected from 517 SMEs,using survey method and adopted a random sampling technique.Structure Equation Model(SEM)and the Baron,and Kenny(1986)mediation approach,Amos was applied to test hypotheses.The findings revealed the resources contributed 41.9 percent and 32.9 percent of the variance in FSGE and NFSGE,respectively,and confirmed the mediating role of TIR in the relationship between resources and SG.Notably,FRR had an indirect effect on FSGE through TIR,although TIR partially mediated the relationship between FRR and NFSGE,and between FLR and SG,both in FSGE and NFSGE terms.While,TIR fully mediated the relationship between MKR and SG,both in FSGE and NFSGE terms as well.This evidence informs the importance of business resources and competencies.In particular,TIR plays an important role in business operations to enhance and maintain sustainable growth.
基金supported by funding from the Wuhan Technology and Business University Doctoral Research Fund Project[Grant No.D2024007].
文摘Economic growth affects natural resources and the environment directly and indirectly;however,the exact role that natural resources play in environmental sustainability remains unknown.This paper revisits the relationship between natural resources and CO_(2)emissions by considering the role of green finance vis-à-vis the aggregated and disaggregated analysis.Empirical panel data estimation analyzes a sample of emerging countries over the 2001-2019 period using the recently developed econometric cross-sectional auto-regressive distributed lag(CS-ARDL)technique.The findings show that natural resource components(natural gas,mineral rent,oil rent,and coal rent)are negatively associated with environmental pollution.In contrast,overall natural resource consumption helps reduce carbon emissions.However,we find that green finance contributes to carbon emission reduction.In contrast,education causes pollution by contributing to carbon emissions.We offer policy recommendations about the effectiveness of green financing for the sustainable use of natural resources in diminishing pollution.
文摘This study focuses on the risks associated with the on-balance sheet recognition of data resources.At the legal level,disputes over ownership often arise due to unclear data property rights,while privacy protection,cybersecurity,and cross-border data flows create additional compliance challenges.In terms of recognition,the subjectivity of traditional valuation methods,the lack of active markets,and the rapid depreciation of data value caused by technological iteration hinder reliable measurement.With respect to disclosure,organizations face a dilemma between transparency and confidentiality.Collectively,these issues exacerbate audit risks.It is therefore imperative to establish an appropriate legal,accounting,and auditing framework to mitigate such risks and remove barriers to the proper recognition of data assets on balance sheets.
基金supported by Science and Technology Program of China Southern Power Grid Corporation under grant number 036000KK52222004(GDKJXM20222117)National Key R&D Program of China for International S&T Cooperation Projects(2019YFE0118700).
文摘The integration of substantial renewable energy and controllable resources disrupts the supply-demand balance in distribution grids.Secure operations are dependent on the participation of user-side resources in demand response at both the day-ahead and intraday levels.Current studies typically overlook the spatial--temporal variations and coordination between these timescales,leading to significant day-ahead optimization errors,high intraday costs,and slow convergence.To address these challenges,we developed a multiagent,multitimescale aggregated regulation method for spatial--temporal coordinated demand response of user-side resources.Firstly,we established a framework considering the spatial--temporal coordinated characteristics of user-side resources with the objective to min-imize the total regulation cost and weighted sum of distribution grid losses.The optimization problem was then solved for two different timescales:day-ahead and intraday.For the day-ahead timescale,we developed an improved particle swarm optimization(IPSO)algo-rithm that dynamically adjusts the number of particles based on intraday outcomes to optimize the regulation strategies.For the intraday timescale,we developed an improved alternating direction method of multipliers(IADMM)algorithm that distributes tasks across edge distribution stations,dynamically adjusting penalty factors by using historical day-ahead data to synchronize the regulations and enhance precision.The simulation results indicate that this method can fully achieve multitimescale spatial--temporal coordinated aggregated reg-ulation between day-ahead and intraday,effectively reduce the total regulation cost and distribution grid losses,and enhance smart grid resilience.
