Robert Kirkpatrick(ed.).2017.English Language Education Policy in the Middle East and North Africa.Springer.xvi+300pp.1.引言刚刚过去的半个世纪里,语言文化的多元性得到空前发展,语言权利也得到前所未有的重视。英语作为国际...Robert Kirkpatrick(ed.).2017.English Language Education Policy in the Middle East and North Africa.Springer.xvi+300pp.1.引言刚刚过去的半个世纪里,语言文化的多元性得到空前发展,语言权利也得到前所未有的重视。英语作为国际通用语在全球的影响力不断扩大,各国在全球化核心概念和经济利益的驱动下加快了英语学习和传播的步伐。展开更多
[Objective] This study aimed to investigate the fluorosis content in the groundwater of Songnen Plain and provide a theoretical basis for the prevention and control of endemic fluorosis in Songnen Plain. [Method] The ...[Objective] This study aimed to investigate the fluorosis content in the groundwater of Songnen Plain and provide a theoretical basis for the prevention and control of endemic fluorosis in Songnen Plain. [Method] The relationship of drinking water type endemic fluorosis with the fluoride content in the soil and groundwater of Songnen Plain was analyzed. [Result] The endemic disease in this region is concentrated in the Song-Liao Plain and Hulunbuir Plateau on both sides of the Daxinganling Mountain. Severe and medium disease areas are distributed mainly in alluviallacustrine plains with dense depressions of lakes and marshes. The strata are commonly fine-grained loess and mucky soil. The groundwater is dominated by HCO3-Ca·Na and HCO3·Cl-Na·Ca types, with fluorine content of 1.80-16.00 mg/L, generally 4-6 mg/L. Light disease and non-disease areas are distributed in the alluvial-lacustrine plains with less or without depressions of lakes and marshes. The strata are mainly coarse-grained silty soil and sandy soil. The chemical types of ground water are Cl-Ca·Na and HCO 3 Cl-Na·Ca. The content of fluorine in ground water is commonly lower than 2 mg/L. [Conclusion] High fluorine groundwater formation is closely related to the geological environment.展开更多
文摘Robert Kirkpatrick(ed.).2017.English Language Education Policy in the Middle East and North Africa.Springer.xvi+300pp.1.引言刚刚过去的半个世纪里,语言文化的多元性得到空前发展,语言权利也得到前所未有的重视。英语作为国际通用语在全球的影响力不断扩大,各国在全球化核心概念和经济利益的驱动下加快了英语学习和传播的步伐。
基金Supported by Chinese Geological Investigation Bureau Financial Support Project(1212010634701)~~
文摘[Objective] This study aimed to investigate the fluorosis content in the groundwater of Songnen Plain and provide a theoretical basis for the prevention and control of endemic fluorosis in Songnen Plain. [Method] The relationship of drinking water type endemic fluorosis with the fluoride content in the soil and groundwater of Songnen Plain was analyzed. [Result] The endemic disease in this region is concentrated in the Song-Liao Plain and Hulunbuir Plateau on both sides of the Daxinganling Mountain. Severe and medium disease areas are distributed mainly in alluviallacustrine plains with dense depressions of lakes and marshes. The strata are commonly fine-grained loess and mucky soil. The groundwater is dominated by HCO3-Ca·Na and HCO3·Cl-Na·Ca types, with fluorine content of 1.80-16.00 mg/L, generally 4-6 mg/L. Light disease and non-disease areas are distributed in the alluvial-lacustrine plains with less or without depressions of lakes and marshes. The strata are mainly coarse-grained silty soil and sandy soil. The chemical types of ground water are Cl-Ca·Na and HCO 3 Cl-Na·Ca. The content of fluorine in ground water is commonly lower than 2 mg/L. [Conclusion] High fluorine groundwater formation is closely related to the geological environment.
