As a typical region with high water demand for agricultural production,understanding the spatiotemporal surface water changes in Northeast China is critical for water resources management and sustainable development.H...As a typical region with high water demand for agricultural production,understanding the spatiotemporal surface water changes in Northeast China is critical for water resources management and sustainable development.However,the long-term variation characteristics of surface water of different water body types in Northeast China remain rarely explored.This study investigated how surface water bodies of different types(e.g.,lake,reservoir,river,coastal aquaculture,marsh wetland,ephemeral water) changed during1999–2020 in Northeast China based on various remote sensing-based datasets.The results showed that surface water in Northeast China grew dramatically in the past two decades,with an equivalent area increasing from 24 394 km^(2) in 1999 to 34 595 km^(2) in 2020.The surge of ephemeral water is the primary driver of surface water expansion,which could ascribe to shifted precipitation pattern.Marsh wetlands,rivers,and reservoirs experienced a similar trend,with an approximate 20% increase at the interdecadal scale.By contrast,coastal aquacultures and natural lakes remain relatively stable.This study is expected to provide a more comprehensive investigation of the surface water variability in Northeast China and has important practical significance for the scientific management of different types of surface water.展开更多
目的运用数据挖掘技术探索近10年文献中中医药治疗脑梗死患者的用药规律及其特点。方法通过检索2013年1月1日—2023年1月1日中国生物医学文献数据库(China Biology Medicine disc,CBMdisc)、中国知识网(China National Knowledge Intern...目的运用数据挖掘技术探索近10年文献中中医药治疗脑梗死患者的用药规律及其特点。方法通过检索2013年1月1日—2023年1月1日中国生物医学文献数据库(China Biology Medicine disc,CBMdisc)、中国知识网(China National Knowledge Internet,CNKI)、中国学术期刊数据库(万方数据)、中文科技期刊数据库(维普网)中医药(含中西医结合)治疗脑梗死的相关文献。完成筛选、建立数据库,在中医传承辅助平台(V3.0)上运用频数统计、聚类分析、关联规则分析等方法,统计药物使用频率、性味归经分布情况,分析药物配伍规律及关联、聚类效果。结果纳入文献共143篇,共整理出161首方剂,222味中药。四气中温(41.51%)、寒(27.55%)、平(25.89%)为主;五味以苦(34.17%)、甘(28.82%)、辛(24.45%)为主;归经以肝(26.68%)、心(17.96%)、脾(16.14%)三经为主;药物频次≥35次的中药共有13味,以活血化瘀类药物为主;药物组合中频次≥45次的有18组;将整理后的222味中药可分为3个聚类。结论脑梗死的治疗药物以温寒平、归心肝经者为多,治疗方法以活血化瘀、补益肝肾、平肝熄风为主,可为临床治疗提供一定借鉴。展开更多
基金Under the auspices of Strategic Priority Research Program of the Chinese Academy of Sciences(No.XDA28020503,XDA23100102)National Key Research and Development Program of China(No.2019YFA0607101)+1 种基金Project of China Geological Survey(No.DD20230505)Excellent Scientific Research and Innovation Team of Universities in Anhui Province(No.2023AH010071)。
文摘As a typical region with high water demand for agricultural production,understanding the spatiotemporal surface water changes in Northeast China is critical for water resources management and sustainable development.However,the long-term variation characteristics of surface water of different water body types in Northeast China remain rarely explored.This study investigated how surface water bodies of different types(e.g.,lake,reservoir,river,coastal aquaculture,marsh wetland,ephemeral water) changed during1999–2020 in Northeast China based on various remote sensing-based datasets.The results showed that surface water in Northeast China grew dramatically in the past two decades,with an equivalent area increasing from 24 394 km^(2) in 1999 to 34 595 km^(2) in 2020.The surge of ephemeral water is the primary driver of surface water expansion,which could ascribe to shifted precipitation pattern.Marsh wetlands,rivers,and reservoirs experienced a similar trend,with an approximate 20% increase at the interdecadal scale.By contrast,coastal aquacultures and natural lakes remain relatively stable.This study is expected to provide a more comprehensive investigation of the surface water variability in Northeast China and has important practical significance for the scientific management of different types of surface water.
文摘目的运用数据挖掘技术探索近10年文献中中医药治疗脑梗死患者的用药规律及其特点。方法通过检索2013年1月1日—2023年1月1日中国生物医学文献数据库(China Biology Medicine disc,CBMdisc)、中国知识网(China National Knowledge Internet,CNKI)、中国学术期刊数据库(万方数据)、中文科技期刊数据库(维普网)中医药(含中西医结合)治疗脑梗死的相关文献。完成筛选、建立数据库,在中医传承辅助平台(V3.0)上运用频数统计、聚类分析、关联规则分析等方法,统计药物使用频率、性味归经分布情况,分析药物配伍规律及关联、聚类效果。结果纳入文献共143篇,共整理出161首方剂,222味中药。四气中温(41.51%)、寒(27.55%)、平(25.89%)为主;五味以苦(34.17%)、甘(28.82%)、辛(24.45%)为主;归经以肝(26.68%)、心(17.96%)、脾(16.14%)三经为主;药物频次≥35次的中药共有13味,以活血化瘀类药物为主;药物组合中频次≥45次的有18组;将整理后的222味中药可分为3个聚类。结论脑梗死的治疗药物以温寒平、归心肝经者为多,治疗方法以活血化瘀、补益肝肾、平肝熄风为主,可为临床治疗提供一定借鉴。
