The intricate network of bilateral trade relationships among Pacific Rim countries(PRCs),along with the associated embodied carbon flows plays a pivotal role in shaping global carbon emission patterns and dynamics.Thi...The intricate network of bilateral trade relationships among Pacific Rim countries(PRCs),along with the associated embodied carbon flows plays a pivotal role in shaping global carbon emission patterns and dynamics.This study employs a multi-regional inputoutput analysis and a symbiotic degree model to explore the symbiotic effects of trade-embodied carbon flows between China and PRCs.We show that between 2009 and 2021,China's trade-embodied carbon exports to PRCs surged from 214.20 million tons to 614.80 million tons,driven largely by mechanical and electronic equipment.The share of the United States,Japan,and South Korea in China's total embodied carbon exports to PRCs has declined,whereas Southeast Asian countries have emerged as the primary source of China's embodied carbon imports.The degree of symbiosis in trade-embodied carbon between China and PRCs shifted from negative to positive,indicating a gradual trend toward positive asymmetric symbiosis.Moreover,China's role in regional trade-embodied carbon flows has transitioned from passive to active,with its influence particularly pronounced in countries such as Vietnam,Thailand,Japan,South Korea,and Russia.展开更多
The development of gas condensate reservoirs with a large gas cap,thin oil rim,strong bottom water,and natural barriers faces numerous challenges,including reservoir heterogeneity,coning effects,phase changes,and mult...The development of gas condensate reservoirs with a large gas cap,thin oil rim,strong bottom water,and natural barriers faces numerous challenges,including reservoir heterogeneity,coning effects,phase changes,and multiphase flow dynamics.The influx of gas and water may lead to a low recovery of the oil rim,while reservoir heterogeneity and natural barriers further exacerbate the uneven distribution of reservoir fluid,complicating development strategies.This paper aims to investigate innovative and effective development strategies for this type of reservoir.A detailed,proportionally scaled numerical simulation is performed based on the experimental results of an artificial sand-filled model,providing novel insights into the dynamic behavior of these reservoirs.By understanding the phase behavior and fluid flow characteristics of the reservoir,the study simulates various strategies for the rational and efficient development of the gas condensate reservoir.These strategies include well patterns and completions,the decision to develop the oil rim or gas cap,depletion rates,the bottom water control,and gas injection.The results show that horizontal wells or highly deviated wells are more suitable for the development of the oil rim,as they provide larger control ranges.The presence of strong bottom water is advantageous for displacement energy supply and pressure maintenance,but it intensifies water coning effects,leading to an earlier breakthrough and a sharp production decline.Therefore,it is preferable to apply highly deviated wells at the oil-gas contact,developing the oil rim at lower rates and smaller pressure gradients,followed by developing the gas cap.This approach can reduce water coning effects and improve recovery,with oil and gas recovery reaching 24.4%and 67.95%,respectively,which is an increase of 16.74%and 17.84%compared to direct depletion development of the gas cap.Due to the strong water bottom,continuous gas injection at the top of the reservoir becomes challenging.This study introduces gas assisted gravity drainage with water control technology,a novel and highly effective approach that addresses the impact of bottom water coning effects on the oil and gas zones and overcomes the limitations of gas flooding in reservoirs with strong bottom water.This method can significantly improve oil and gas recovery,achieving recovery of 39.74%and 84.50%,respectively.Compared to the conventional depletion strategy of sequential oil rim and gas cap development,this method achieves additional improvements of 15.33%and 16.55%in oil and gas recovery,respectively.展开更多
Rim101是一个具有锌指结构的转录因子,在调控酿酒酵母细胞耐受碱性和高盐环境、钙离子稳态、细胞分裂以及硒毒性方面起作用。前人研究结果显示,细胞周期依赖性激酶基因PHO85的缺失,导致Rim101蛋白在细胞核内积累。为了探索Rim101亚细胞...Rim101是一个具有锌指结构的转录因子,在调控酿酒酵母细胞耐受碱性和高盐环境、钙离子稳态、细胞分裂以及硒毒性方面起作用。前人研究结果显示,细胞周期依赖性激酶基因PHO85的缺失,导致Rim101蛋白在细胞核内积累。为了探索Rim101亚细胞定位的新调节因子,通过荧光显微镜技术对酿酒酵母细胞基因组中编码磷酸酶的73个非必需基因缺失株和编码激酶的139个非必需基因缺失株进行了筛选,发现编码磷脂酰肌醇磷酸(Ptd Ins P)的磷酸酶Sac1调控Rim101的亚细胞定位。展开更多
基金National Natural Science Foundation of China,No.42201258,No.42571214Ministry of Education Humanities and Social Sciences Research Youth Fund Project,No.22YJCZH057+2 种基金National Key Research and Development Program of China,No.2024YFE0214000The Project of Jinhua City’s Deepening of Local Cooperation between China and Africa in 2025,No.SXZF202548ZSpecial Major Project of National Influence Building Think Tank,No.ZKZD2024011。
文摘The intricate network of bilateral trade relationships among Pacific Rim countries(PRCs),along with the associated embodied carbon flows plays a pivotal role in shaping global carbon emission patterns and dynamics.This study employs a multi-regional inputoutput analysis and a symbiotic degree model to explore the symbiotic effects of trade-embodied carbon flows between China and PRCs.We show that between 2009 and 2021,China's trade-embodied carbon exports to PRCs surged from 214.20 million tons to 614.80 million tons,driven largely by mechanical and electronic equipment.The share of the United States,Japan,and South Korea in China's total embodied carbon exports to PRCs has declined,whereas Southeast Asian countries have emerged as the primary source of China's embodied carbon imports.The degree of symbiosis in trade-embodied carbon between China and PRCs shifted from negative to positive,indicating a gradual trend toward positive asymmetric symbiosis.Moreover,China's role in regional trade-embodied carbon flows has transitioned from passive to active,with its influence particularly pronounced in countries such as Vietnam,Thailand,Japan,South Korea,and Russia.
基金the support from the National Natural Science Foundation of China(NSFC Grant No.:52004032)。
文摘The development of gas condensate reservoirs with a large gas cap,thin oil rim,strong bottom water,and natural barriers faces numerous challenges,including reservoir heterogeneity,coning effects,phase changes,and multiphase flow dynamics.The influx of gas and water may lead to a low recovery of the oil rim,while reservoir heterogeneity and natural barriers further exacerbate the uneven distribution of reservoir fluid,complicating development strategies.This paper aims to investigate innovative and effective development strategies for this type of reservoir.A detailed,proportionally scaled numerical simulation is performed based on the experimental results of an artificial sand-filled model,providing novel insights into the dynamic behavior of these reservoirs.By understanding the phase behavior and fluid flow characteristics of the reservoir,the study simulates various strategies for the rational and efficient development of the gas condensate reservoir.These strategies include well patterns and completions,the decision to develop the oil rim or gas cap,depletion rates,the bottom water control,and gas injection.The results show that horizontal wells or highly deviated wells are more suitable for the development of the oil rim,as they provide larger control ranges.The presence of strong bottom water is advantageous for displacement energy supply and pressure maintenance,but it intensifies water coning effects,leading to an earlier breakthrough and a sharp production decline.Therefore,it is preferable to apply highly deviated wells at the oil-gas contact,developing the oil rim at lower rates and smaller pressure gradients,followed by developing the gas cap.This approach can reduce water coning effects and improve recovery,with oil and gas recovery reaching 24.4%and 67.95%,respectively,which is an increase of 16.74%and 17.84%compared to direct depletion development of the gas cap.Due to the strong water bottom,continuous gas injection at the top of the reservoir becomes challenging.This study introduces gas assisted gravity drainage with water control technology,a novel and highly effective approach that addresses the impact of bottom water coning effects on the oil and gas zones and overcomes the limitations of gas flooding in reservoirs with strong bottom water.This method can significantly improve oil and gas recovery,achieving recovery of 39.74%and 84.50%,respectively.Compared to the conventional depletion strategy of sequential oil rim and gas cap development,this method achieves additional improvements of 15.33%and 16.55%in oil and gas recovery,respectively.
文摘Rim101是一个具有锌指结构的转录因子,在调控酿酒酵母细胞耐受碱性和高盐环境、钙离子稳态、细胞分裂以及硒毒性方面起作用。前人研究结果显示,细胞周期依赖性激酶基因PHO85的缺失,导致Rim101蛋白在细胞核内积累。为了探索Rim101亚细胞定位的新调节因子,通过荧光显微镜技术对酿酒酵母细胞基因组中编码磷酸酶的73个非必需基因缺失株和编码激酶的139个非必需基因缺失株进行了筛选,发现编码磷脂酰肌醇磷酸(Ptd Ins P)的磷酸酶Sac1调控Rim101的亚细胞定位。
