The Tianshan range,a Paleozoic orogenic belt in Central Asia,has undergone multiple phases of tectonic activities characterized by the N-S compression after the early Mesozoic,including the far-field effects of the Ce...The Tianshan range,a Paleozoic orogenic belt in Central Asia,has undergone multiple phases of tectonic activities characterized by the N-S compression after the early Mesozoic,including the far-field effects of the Cenozoic Indian-Asian collision.However,there are limited reports on the tectonic deformation and initiation of Triassic intracontinental deformation in the Tianshan range.Understanding this structural context is crucial for interpreting the early intracontinental deformation history of the Eurasian continent during the early Mesozoic.Growth strata and syn-tectonic sediments provide a rich source of information on tectonic activities and have been extensively used in the studies of orogenic belts.Based on detail fieldwork conducted in this study,the middle-late Triassic Kelamayi Formation of the northern Kuqa Depression in the southern Tianshan fold-thrust belt has been identified as the typical syn-tectonic growth strata.The youngest detrital zircon component in two lithic sandstone samples from the bottom and top of the Kelamayi growth strata yielded U-Pb ages of 223.4±3.1 and 215.5±2.9 Ma,respectively,indicating that the maximum depositional age of the bottom and top of the Kelamayi growth strata is 226-220 and 218-212 Ma.The geochronological distribution of detrital samples from the Early-Middle Triassic and Late Triassic revealed abrupt changes,suggesting a new source supply resulting from tectonic activation in the Tianshan range.The coupling relationship between the syn-tectonic sedimentation of the Kelamayi Formation and the South Tianshan fold-thrust system provides robust evidence that the Triassic intracontinental deformation of the South Tianshan range began at approximately 226-220 Ma(during the Late Triassic)and ended at approximately 218-212 Ma.These findings provide crucial constraints for understanding the intraplate deformation in the Tianshan range during the Triassic.展开更多
This work systematically reviews the complex mechanisms of CO_(2)-water-rock interactions,microscopic simulations of reactive transport(dissolution,precipitation and precipitate migration)in porous media,and microscop...This work systematically reviews the complex mechanisms of CO_(2)-water-rock interactions,microscopic simulations of reactive transport(dissolution,precipitation and precipitate migration)in porous media,and microscopic simulations of CO_(2)-water-rock system.The work points out the key issues in current research and provides suggestions for future research.After injection of CO_(2) into underground reservoirs,not only conventional pressure-driven flow and mass transfer processes occur,but also special physicochemical phenomena like dissolution,precipitation,and precipitate migration.The coupling of these processes causes complex changes in permeability and porosity parameters of the porous media.Pore-scale microscopic flow simulations can provide detailed information within the three-dimensional pore and throat space and explicitly observe changes in the fluid-solid interfaces of porous media during reactions.At present,the research has limitations in the decoupling of complex mechanisms,characterization of differential multi-mineral reactions,precipitation generation mechanisms and characterization(crystal nucleation and mineral detachment),simulation methods for precipitation-fluid interaction,and coupling mechanisms of multiple physicochemical processes.In future studies,it is essential to innovate experimental methods to decouple“dissolution-precipitation-precipitate migration”processes,improve the accuracy of experimental testing of minerals geochemical reaction-related parameters,build reliable characterization of various precipitation types,establish precipitation-fluid interaction simulation methods,coordinate the boundary conditions of different physicochemical processes,and,finally,achieve coupled flow simulation of“dissolution-precipitation-precipitate migration”within CO_(2)-water-rock systems.展开更多
目的:研究阿替普酶修复急性缺血性脑卒中(AIS)后T淋巴细胞介导的脑组织免疫炎症损伤。方法:选取2022年6月至2023年6月衡水市人民医院收治的AIS患者100例,分为常规组、阿替普酶组,每组50例,入组后常规组行常规措施干预治疗,阿替普酶组加...目的:研究阿替普酶修复急性缺血性脑卒中(AIS)后T淋巴细胞介导的脑组织免疫炎症损伤。方法:选取2022年6月至2023年6月衡水市人民医院收治的AIS患者100例,分为常规组、阿替普酶组,每组50例,入组后常规组行常规措施干预治疗,阿替普酶组加用阿替普酶溶栓治疗。比较两组患者神经功能、脑血管储备功能、脑部血流动力学、T淋巴细胞介导脑组织免疫炎症损伤指标CD4^(+)T细胞亚群[促炎细胞(Th1、Th17)、抗炎细胞(Th2、Treg细胞)]及其相关细胞因子水平变化,评价临床疗效及预后转归情况。结果:治疗后阿替普酶组神经功能NIHSS评分低于常规组[(6.57±0.79)分vs (9.34±1.23)分,t=13.400,P<0.05]。阿替普酶组脑血管储备功能CVR、BHI高于常规组[(34.54±4.35)%vs (29.89±2.31)%、1.00±0.23 vs 0.92±0.08,t=6.676、2.323,P<0.05],PI低于常规组(0.60±0.07 vs 0.72±0.08,t=7.982,P<0.05)。阿替普酶组脑部血流动力学CBF高于常规组[(49.89±9.76) ml/(100 g/min) vs (40.34±7.86) ml/(100 g/min),t=5.389,P<0.05],MTT、TTP短于常规组[(6.45±0.78) s vs(9.78±1.02) s、(24.45±2.16) s vs (26.78±3.25) s,t=18.340、4.222,P<0.05]。阿替普酶组Th1、Th17细胞比例及相关细胞因子IFN-γ、IL-17水平低于常规组[(3.27±0.59)%vs (5.64±0.52)%、(2.34±0.25)%vs (4.35±0.38)%、(3.24±0.45) pg/ml vs (4.90±0.65) pg/ml、(10.23±1.43) pg/ml vs (14.35±2.14) pg/ml,t=21.310、31.250、14.850、11.320,P<0.05],Th2、Treg细胞比例及相关细胞因子IL-4、TGF-β水平高于常规组[(8.75±0.54)%vs (7.02±0.37)%、(7.24±2.13)%vs (5.88±1.67)%、(13.24±2.16) pg/ml vs(10.26±1.29) pg/ml、(90.32±9.02) pg/ml vs (81.45±8.97) pg/ml,t=18.690、3.553、8.375、4.930,P<0.05]。阿替普酶组总有效率、预后良好率高于常规组(94.00%vs 80.00%、80.00%vs 62.00%,χ^(2)=4.332、3.934,P<0.05)。结论:阿替普酶在AIS治疗中具有修复T淋巴细胞介导的脑组织免疫炎症损伤的作用,可减轻脑损伤,改善脑血管储备功能和神经功能,预后转归良好。展开更多
基金supported by the National Key Research and Development Project(Grant No.2018YFC0603700)research grants from the China Geological Survey(Grant Nos.DD20230408,DD20190011,DD20191011 and DD20221824)+1 种基金the Fundamental Research Funds from the Chinese Academy of Geological Sciences(Grant No.JKY202011)the Key Laboratory of Airborne Geophysics and Remote Sensing Geology Ministry of Natural Resources(Grant No.2023YFL23)。
文摘The Tianshan range,a Paleozoic orogenic belt in Central Asia,has undergone multiple phases of tectonic activities characterized by the N-S compression after the early Mesozoic,including the far-field effects of the Cenozoic Indian-Asian collision.However,there are limited reports on the tectonic deformation and initiation of Triassic intracontinental deformation in the Tianshan range.Understanding this structural context is crucial for interpreting the early intracontinental deformation history of the Eurasian continent during the early Mesozoic.Growth strata and syn-tectonic sediments provide a rich source of information on tectonic activities and have been extensively used in the studies of orogenic belts.Based on detail fieldwork conducted in this study,the middle-late Triassic Kelamayi Formation of the northern Kuqa Depression in the southern Tianshan fold-thrust belt has been identified as the typical syn-tectonic growth strata.The youngest detrital zircon component in two lithic sandstone samples from the bottom and top of the Kelamayi growth strata yielded U-Pb ages of 223.4±3.1 and 215.5±2.9 Ma,respectively,indicating that the maximum depositional age of the bottom and top of the Kelamayi growth strata is 226-220 and 218-212 Ma.The geochronological distribution of detrital samples from the Early-Middle Triassic and Late Triassic revealed abrupt changes,suggesting a new source supply resulting from tectonic activation in the Tianshan range.The coupling relationship between the syn-tectonic sedimentation of the Kelamayi Formation and the South Tianshan fold-thrust system provides robust evidence that the Triassic intracontinental deformation of the South Tianshan range began at approximately 226-220 Ma(during the Late Triassic)and ended at approximately 218-212 Ma.These findings provide crucial constraints for understanding the intraplate deformation in the Tianshan range during the Triassic.
基金Supported by the National Natural Science Foundation of China(52234003,52222402,52304044).
文摘This work systematically reviews the complex mechanisms of CO_(2)-water-rock interactions,microscopic simulations of reactive transport(dissolution,precipitation and precipitate migration)in porous media,and microscopic simulations of CO_(2)-water-rock system.The work points out the key issues in current research and provides suggestions for future research.After injection of CO_(2) into underground reservoirs,not only conventional pressure-driven flow and mass transfer processes occur,but also special physicochemical phenomena like dissolution,precipitation,and precipitate migration.The coupling of these processes causes complex changes in permeability and porosity parameters of the porous media.Pore-scale microscopic flow simulations can provide detailed information within the three-dimensional pore and throat space and explicitly observe changes in the fluid-solid interfaces of porous media during reactions.At present,the research has limitations in the decoupling of complex mechanisms,characterization of differential multi-mineral reactions,precipitation generation mechanisms and characterization(crystal nucleation and mineral detachment),simulation methods for precipitation-fluid interaction,and coupling mechanisms of multiple physicochemical processes.In future studies,it is essential to innovate experimental methods to decouple“dissolution-precipitation-precipitate migration”processes,improve the accuracy of experimental testing of minerals geochemical reaction-related parameters,build reliable characterization of various precipitation types,establish precipitation-fluid interaction simulation methods,coordinate the boundary conditions of different physicochemical processes,and,finally,achieve coupled flow simulation of“dissolution-precipitation-precipitate migration”within CO_(2)-water-rock systems.
文摘目的:研究阿替普酶修复急性缺血性脑卒中(AIS)后T淋巴细胞介导的脑组织免疫炎症损伤。方法:选取2022年6月至2023年6月衡水市人民医院收治的AIS患者100例,分为常规组、阿替普酶组,每组50例,入组后常规组行常规措施干预治疗,阿替普酶组加用阿替普酶溶栓治疗。比较两组患者神经功能、脑血管储备功能、脑部血流动力学、T淋巴细胞介导脑组织免疫炎症损伤指标CD4^(+)T细胞亚群[促炎细胞(Th1、Th17)、抗炎细胞(Th2、Treg细胞)]及其相关细胞因子水平变化,评价临床疗效及预后转归情况。结果:治疗后阿替普酶组神经功能NIHSS评分低于常规组[(6.57±0.79)分vs (9.34±1.23)分,t=13.400,P<0.05]。阿替普酶组脑血管储备功能CVR、BHI高于常规组[(34.54±4.35)%vs (29.89±2.31)%、1.00±0.23 vs 0.92±0.08,t=6.676、2.323,P<0.05],PI低于常规组(0.60±0.07 vs 0.72±0.08,t=7.982,P<0.05)。阿替普酶组脑部血流动力学CBF高于常规组[(49.89±9.76) ml/(100 g/min) vs (40.34±7.86) ml/(100 g/min),t=5.389,P<0.05],MTT、TTP短于常规组[(6.45±0.78) s vs(9.78±1.02) s、(24.45±2.16) s vs (26.78±3.25) s,t=18.340、4.222,P<0.05]。阿替普酶组Th1、Th17细胞比例及相关细胞因子IFN-γ、IL-17水平低于常规组[(3.27±0.59)%vs (5.64±0.52)%、(2.34±0.25)%vs (4.35±0.38)%、(3.24±0.45) pg/ml vs (4.90±0.65) pg/ml、(10.23±1.43) pg/ml vs (14.35±2.14) pg/ml,t=21.310、31.250、14.850、11.320,P<0.05],Th2、Treg细胞比例及相关细胞因子IL-4、TGF-β水平高于常规组[(8.75±0.54)%vs (7.02±0.37)%、(7.24±2.13)%vs (5.88±1.67)%、(13.24±2.16) pg/ml vs(10.26±1.29) pg/ml、(90.32±9.02) pg/ml vs (81.45±8.97) pg/ml,t=18.690、3.553、8.375、4.930,P<0.05]。阿替普酶组总有效率、预后良好率高于常规组(94.00%vs 80.00%、80.00%vs 62.00%,χ^(2)=4.332、3.934,P<0.05)。结论:阿替普酶在AIS治疗中具有修复T淋巴细胞介导的脑组织免疫炎症损伤的作用,可减轻脑损伤,改善脑血管储备功能和神经功能,预后转归良好。
