DyCl3-KCl和DyCl3-CaCl2体系相图的热力学优化计算

1 Introduction Molten salts are considered to be used as fluid tar-gets in the nuclear incineration of transuranic elementswith proto accelerators .The molten salts are also usedas the media in high temperature chemical reprocess-ing of spent nuclear fuel of fast reactors .The phase di-agrams of rare earth metal halides in combination withalkali metal halide systems are of pri me i mportance inapplication. The thermodynamic properties and phase diagramsof the DyCl3-MClnsystems ( M =alkali or…     

Thermodynamic optimization of the DyCl_3-KCl and DyCl_3-CaCl_2 systems

1 Introduction Molten salts are considered to be used as fluid tar-gets in the nuclear incineration of transuranic elementswith proto accelerators .The molten salts are also usedas the media in high temperature chemical reprocess-ing of spent nuclear fuel of fast reactors .The phase di-agrams of rare earth metal halides in combination withalkali metal halide systems are of pri me i mportance inapplication. The thermodynamic properties and phase diagramsof the DyCl3-MClnsystems ( M =alkali or…     

小学低段口语交际的教学策略研究

<正>《义务教育语文课程标准（2022年版）》（以下简称《课程标准》）对小学生口语交际能力的培养提出了更新、更高的要求。小学阶段是学生接触语言、内化语言知识、掌握语言能力的关键时期,教师必须抓住这个关键时期对学生进行口语能力的训练和培育,使他们养成良好的交际习惯,逐步增强他们口语交际的自信。在此背景下,教师必须从低年级开始对学生的语言能力、交际习惯进行有针对性的培养,使他们敢于表达自己、与他人交谈,循序渐进地促进小学低段学生口语交际能力的提高。因此,笔者在搜集、阅读相关文献资料的基础上,结合自身的教学实践探索,从“重视对教材内容的研读”“创设真实口语交际情境”“加强教师的示范和指导”三方面论述了小学低段口语交际的教学策略。