This paper elaborates the chemical constituent change principles of deep geothermal fluid during the process of upward movement. It summarizes research methods of hydrochemistry, isotope and numerical modelling techni...This paper elaborates the chemical constituent change principles of deep geothermal fluid during the process of upward movement. It summarizes research methods of hydrochemistry, isotope and numerical modelling technique for the physiochemical processes such as decreasing temperature, shallow groundwater infusion, and degassing. The multi-component chemical geothermometry methods including gas geochemical method are discussed. High-temperature geothermal fields in China are mostly located in the southwest with frequent new tectonic movements, especially in Tibet high-temperature geothermal areas. Therefore the paper also focuses the status of high-temperature geothermal fluid research. At last, it's pointed out in the paper that in the future we can start from typical high-temperature geothermal zones and geothermal fields to explore optimization of the multi-component geothermometry method and use it in the reconstruction and analogue of the formation mechanism and internal relevancy of regional geothermal systems.展开更多
In the context of territorial spatial planning,the overall coordinated protection has become a consensus in the field of cultural heritage protection,and the study on the spatial and temporal pattern of trans-regional...In the context of territorial spatial planning,the overall coordinated protection has become a consensus in the field of cultural heritage protection,and the study on the spatial and temporal pattern of trans-regional cultural heritage is of great significance to the overall protection.Based on the cultural relics protection units in Jingzhou area of national great site protection,the temporal and spatial distribution characteristics and influencing factors of cultural heritage resources were studied with the help of ArcGIS.The data show that on the whole,the cultural heritage in Jingzhou area of national great site protection presented the time series of “a large span,more at two ends” and the spatial distribution pattern of “one main,two secondary and three cores”.Cultural heritage in different historical periods had the characteristics of differentiated regional aggregation.The formation of the spatial pattern of different types of cultural heritage was closely related to the local historical and cultural background.Cultural heritage was affected by rivers,terrain,transportation,land,culture and other factors.It was mainly distributed along rivers in areas with little topographic fluctuation and low altitudes.The development and construction of cultural heritage sites were weak,and the ecological foundation was poor.However,the traffic accessibility was good,and the cultural heritage was deep.The research results are expected to provide a scientific basis for guiding the large site protection area to strengthen the integrated protection of cultural resources.展开更多
目的探讨辛伐他汀联合雌二醇对大鼠骨质疏松的影响。方法75只雌性SD大鼠随机分为5组:假手术组、去势组、辛伐他汀组、雌二醇组、联合药物组,15只/组,构建去卵巢大鼠骨质疏松模型,给予不同药物干预。检测骨代谢相关生化指标及骨生物力学...目的探讨辛伐他汀联合雌二醇对大鼠骨质疏松的影响。方法75只雌性SD大鼠随机分为5组:假手术组、去势组、辛伐他汀组、雌二醇组、联合药物组,15只/组,构建去卵巢大鼠骨质疏松模型,给予不同药物干预。检测骨代谢相关生化指标及骨生物力学指标,测定骨组织骨密度(bone mineral density,BMD)和骨矿物含量(bone mineral content,BMC),HE染色观察骨组织形态结构。结果去势组血清骨代谢相关生化指标(ALP、BGP、PICP、TRAP)水平较假手术组均显著增高(P<0.05),辛伐他汀组、雌二醇组、联合药物组较去势组均降低,尤以联合用药组降低最显著(P<0.05)。去势组骨组织BMD和BMC、骨生物力学指标(最大载荷、最大应力、最大位移和刚度)较假手术组显著降低(P<0.05),辛伐他汀组、雌二醇组、联合药物组较去势组均增高,尤以联合药物组增高最显著(P<0.05)。去势组骨组织骨小梁减少稀疏,排列紊乱,网状结构破坏,大量纤维组织,髓腔内大量空泡状脂肪细胞。联合药物组骨组织结构较完整,骨小梁数目增多,致密均匀粗壮,连接成网状结构,脂肪细胞明显减少。结论辛伐他汀联合雌二醇可调节大鼠骨代谢,增加骨密度和骨矿物质,改善骨生物力学和骨组织形态学,起到抗骨质疏松疗效和骨保护作用。展开更多
基金supported by the Chinese Academy of Geological Sciences Fund (No.YK201611)the Chinese Academy of Geological Sciences Hydrogeological Environment Geology Institute Fund (No. SK201408)
文摘This paper elaborates the chemical constituent change principles of deep geothermal fluid during the process of upward movement. It summarizes research methods of hydrochemistry, isotope and numerical modelling technique for the physiochemical processes such as decreasing temperature, shallow groundwater infusion, and degassing. The multi-component chemical geothermometry methods including gas geochemical method are discussed. High-temperature geothermal fields in China are mostly located in the southwest with frequent new tectonic movements, especially in Tibet high-temperature geothermal areas. Therefore the paper also focuses the status of high-temperature geothermal fluid research. At last, it's pointed out in the paper that in the future we can start from typical high-temperature geothermal zones and geothermal fields to explore optimization of the multi-component geothermometry method and use it in the reconstruction and analogue of the formation mechanism and internal relevancy of regional geothermal systems.
基金Sponsored by the Project for the Philosophy and Social Science Research of Hubei Provincial Department of Education in 2021 (21Q049)Innovation and Entrepreneurship Project for University Students of Changjiang University in 2021 (Yz2021325)。
文摘In the context of territorial spatial planning,the overall coordinated protection has become a consensus in the field of cultural heritage protection,and the study on the spatial and temporal pattern of trans-regional cultural heritage is of great significance to the overall protection.Based on the cultural relics protection units in Jingzhou area of national great site protection,the temporal and spatial distribution characteristics and influencing factors of cultural heritage resources were studied with the help of ArcGIS.The data show that on the whole,the cultural heritage in Jingzhou area of national great site protection presented the time series of “a large span,more at two ends” and the spatial distribution pattern of “one main,two secondary and three cores”.Cultural heritage in different historical periods had the characteristics of differentiated regional aggregation.The formation of the spatial pattern of different types of cultural heritage was closely related to the local historical and cultural background.Cultural heritage was affected by rivers,terrain,transportation,land,culture and other factors.It was mainly distributed along rivers in areas with little topographic fluctuation and low altitudes.The development and construction of cultural heritage sites were weak,and the ecological foundation was poor.However,the traffic accessibility was good,and the cultural heritage was deep.The research results are expected to provide a scientific basis for guiding the large site protection area to strengthen the integrated protection of cultural resources.
文摘目的探讨辛伐他汀联合雌二醇对大鼠骨质疏松的影响。方法75只雌性SD大鼠随机分为5组:假手术组、去势组、辛伐他汀组、雌二醇组、联合药物组,15只/组,构建去卵巢大鼠骨质疏松模型,给予不同药物干预。检测骨代谢相关生化指标及骨生物力学指标,测定骨组织骨密度(bone mineral density,BMD)和骨矿物含量(bone mineral content,BMC),HE染色观察骨组织形态结构。结果去势组血清骨代谢相关生化指标(ALP、BGP、PICP、TRAP)水平较假手术组均显著增高(P<0.05),辛伐他汀组、雌二醇组、联合药物组较去势组均降低,尤以联合用药组降低最显著(P<0.05)。去势组骨组织BMD和BMC、骨生物力学指标(最大载荷、最大应力、最大位移和刚度)较假手术组显著降低(P<0.05),辛伐他汀组、雌二醇组、联合药物组较去势组均增高,尤以联合药物组增高最显著(P<0.05)。去势组骨组织骨小梁减少稀疏,排列紊乱,网状结构破坏,大量纤维组织,髓腔内大量空泡状脂肪细胞。联合药物组骨组织结构较完整,骨小梁数目增多,致密均匀粗壮,连接成网状结构,脂肪细胞明显减少。结论辛伐他汀联合雌二醇可调节大鼠骨代谢,增加骨密度和骨矿物质,改善骨生物力学和骨组织形态学,起到抗骨质疏松疗效和骨保护作用。
