A reasonable classification of deposits holds great significance for identifying prospecting targets and deploying exploration. The world ’s keen demand for lithium resources has expedited the discovery of numerous n...A reasonable classification of deposits holds great significance for identifying prospecting targets and deploying exploration. The world ’s keen demand for lithium resources has expedited the discovery of numerous novel lithium resources. Given the presence of varied classification criteria for lithium resources presently, this study further ascertained and classified the lithium resources according to their occurrence modes, obtaining 10 types and 5 subtypes of lithium deposits(resources) based on endogenetic and exogenetic factors. As indicated by surveys of Cenozoic exogenetic lithium deposits in China and abroad,the formation and distribution of the deposits are primarily determined by plate collision zones, their primary material sources are linked to the anatectic magmas in the deep oceanic crust, and they were formed primarily during the Miocene and Late Paleogene. The researchers ascertained that these deposits,especially those of the salt lake, geothermal, and volcanic deposit types, are formed by unique slightly acidic magmas, tend to migrate and accumulate toward low-lying areas, and display supernormal enrichment. However, the material sources of lithium deposits(resources) of the Neopaleozoic clay subtype and the deep brine type are yet to be further identified. Given the various types and complex origins of lithium deposits(resources), which were formed due to the interactions of multiple spheres, it is recommended that the mineralization of exogenetic lithium deposits(resources) be investigated by integrating tectono-geochemistry, paleoatmospheric circulation, and salinology. So far, industrialized lithium extraction is primarily achieved in lithium deposits of the salt lake, clay, and hard rock types. The lithium extraction employs different processes, with lithium extraction from salt lake-type lithium deposits proving the most energy-saving and cost-effective.展开更多
防刺服装属于个体装甲中的一类,随着近年来一些恐怖事件的发生,各类个体防护用品的开发和研究越来越受到人们的关注和重视。文章主要介绍了国际上常用的防刺服装的测试标准NIJ standard-0115.00和PSDB stab resistancestandard for body...防刺服装属于个体装甲中的一类,随着近年来一些恐怖事件的发生,各类个体防护用品的开发和研究越来越受到人们的关注和重视。文章主要介绍了国际上常用的防刺服装的测试标准NIJ standard-0115.00和PSDB stab resistancestandard for body armour,并对其进行了比较。同时介绍了防刺服开发中应用的主要高性能纤维材料以及增强防刺性能的主要技术手段。展开更多
目的探讨微波炮制方法对蜜炙黄芪中黄芪甲苷含量的影响,优化蜜炙黄芪微波炮制的工艺条件。方法采用HPLC?ELSD法检测蜜炙黄芪中黄芪甲苷的含量,并按L9(34)正交实验对蜜炙黄芪的微波火力、加热时间、含蜜量3个因素进行微波炮制蜜炙黄芪的...目的探讨微波炮制方法对蜜炙黄芪中黄芪甲苷含量的影响,优化蜜炙黄芪微波炮制的工艺条件。方法采用HPLC?ELSD法检测蜜炙黄芪中黄芪甲苷的含量,并按L9(34)正交实验对蜜炙黄芪的微波火力、加热时间、含蜜量3个因素进行微波炮制蜜炙黄芪的工艺考察。结果可用微波法炮制蜜炙黄芪,最佳工艺为微波火力100%,加热时间4 m in,含蜜量25%,即A3B2C1。结论微波法炮制蜜炙黄芪中黄芪甲苷含量高于炒法蜜炙黄芪,正交实验中的微波火力和加热时间对蜜炙黄芪的效果具显著差异,有统计学意义(P<0.05),含蜜量对蜜炙黄芪的影响无显著差异,无统计学意义(P>0.05),微波法炮制蜜炙黄芪是可行的。展开更多
基金funded by the major research program of the of National Natural Science Foundation of China entitled Metallogenic Mechanisms and Regularity of the Lithium Ore Concentration Area in the Zabuye Salt Lake, Tibet (91962219)Science and Technology Major Project of the Tibet Autonomous Region ’s Science and Techonlogy Plan (XZ202201ZD0004G01)a geological survey project of China Geological Survey (DD20230037)。
文摘A reasonable classification of deposits holds great significance for identifying prospecting targets and deploying exploration. The world ’s keen demand for lithium resources has expedited the discovery of numerous novel lithium resources. Given the presence of varied classification criteria for lithium resources presently, this study further ascertained and classified the lithium resources according to their occurrence modes, obtaining 10 types and 5 subtypes of lithium deposits(resources) based on endogenetic and exogenetic factors. As indicated by surveys of Cenozoic exogenetic lithium deposits in China and abroad,the formation and distribution of the deposits are primarily determined by plate collision zones, their primary material sources are linked to the anatectic magmas in the deep oceanic crust, and they were formed primarily during the Miocene and Late Paleogene. The researchers ascertained that these deposits,especially those of the salt lake, geothermal, and volcanic deposit types, are formed by unique slightly acidic magmas, tend to migrate and accumulate toward low-lying areas, and display supernormal enrichment. However, the material sources of lithium deposits(resources) of the Neopaleozoic clay subtype and the deep brine type are yet to be further identified. Given the various types and complex origins of lithium deposits(resources), which were formed due to the interactions of multiple spheres, it is recommended that the mineralization of exogenetic lithium deposits(resources) be investigated by integrating tectono-geochemistry, paleoatmospheric circulation, and salinology. So far, industrialized lithium extraction is primarily achieved in lithium deposits of the salt lake, clay, and hard rock types. The lithium extraction employs different processes, with lithium extraction from salt lake-type lithium deposits proving the most energy-saving and cost-effective.
文摘防刺服装属于个体装甲中的一类,随着近年来一些恐怖事件的发生,各类个体防护用品的开发和研究越来越受到人们的关注和重视。文章主要介绍了国际上常用的防刺服装的测试标准NIJ standard-0115.00和PSDB stab resistancestandard for body armour,并对其进行了比较。同时介绍了防刺服开发中应用的主要高性能纤维材料以及增强防刺性能的主要技术手段。
文摘目的探讨微波炮制方法对蜜炙黄芪中黄芪甲苷含量的影响,优化蜜炙黄芪微波炮制的工艺条件。方法采用HPLC?ELSD法检测蜜炙黄芪中黄芪甲苷的含量,并按L9(34)正交实验对蜜炙黄芪的微波火力、加热时间、含蜜量3个因素进行微波炮制蜜炙黄芪的工艺考察。结果可用微波法炮制蜜炙黄芪,最佳工艺为微波火力100%,加热时间4 m in,含蜜量25%,即A3B2C1。结论微波法炮制蜜炙黄芪中黄芪甲苷含量高于炒法蜜炙黄芪,正交实验中的微波火力和加热时间对蜜炙黄芪的效果具显著差异,有统计学意义(P<0.05),含蜜量对蜜炙黄芪的影响无显著差异,无统计学意义(P>0.05),微波法炮制蜜炙黄芪是可行的。
