煤中形态硫分析及脱除能力研究

在实验室自动定硫仪上采用形态硫直接测定法，测定了７种煤样的脂肪硫、黄铁矿硫与噻吩硫的含量及它们脱除难易程度（能力），结果表明采用本实验方法测得的形态硫结果与Ｘ－射线吸收精细结构能谱（ＸＡＦＳ）所分析的结果一致。煤中形态硫在加热条件下脱除能力为：脂肪硫＞黄铁矿硫＞噻吩硫＞硫酸盐硫，而在弱碱性氧化脱硫条件下各形态硫脱除能力为：黄铁矿硫＞脂肪硫＞噻吩硫＞硫酸盐硫。     

在化学类通识教育课程中开展“课堂辩论”对大学生能力培养的探索与实践

This paper explored "the classroom debates" in "nutrition chemistry" course. After evaluating the students' expectation in participating activities, the participating degree and their gains from the activity, it was found that the performance and gains from the "classroom debate" were influenced by provincial locations, genders and majors. The results showed that "the classroom debates" need to coordinate the students' speculative thinking ability, creative thinking, team playing, medical ethics and professional education as a whole. This would help the students to form a way of critical thinking as well as the right outlook on life and value system.     

SPOC模式下无机与分析化学课程教学实践

以无机与分析化学课程教学为例,探讨了SPOC混合教学模式下提高学生知识与能力的有效途径。在该课程教学中的应用和考核评价中,采用课堂教学与在线自主学习相结合的教学方式,实现了以能力培养为目标的本科教育模式的"三个转变":(1)以教为主向以学为主的转变;(2)以课堂教学为主向课内课外结合为主的转变;(3)以结果评价为主向以结果与过程评价相结合为主的转变。有效地提高了教学质量,突出地解决了目前高等院校本科教育模式面临的学生学习主动性差、参与度少的问题。     

基于培养决策能力的“氨与铵态氮肥”教学设计

以氨与铵态氮肥为例,在明确教学设计理念的基础上,确立了基于培养决策能力的教学设计思路：包括确立决策事件,设计情境、问题、活动,以及设计教学评价等环节。进而围绕生产运输、设计更新、存储使用、理性评论等4个方面,展开了基于决策能力的氨与铵态氮肥教学过程的设计,将氨与铵盐性质的学习镶嵌在相应的决策事件解决过程之中。     

用好微专题 复习更高效——以“解三角形”微专题复习课为例

二轮复习是在学生完成了必备知识储备的前提下,对本学科的思想和方法进行归纳应用,进而实现关键能力提升的重要阶段.微专题复习课应该以学生的能力生长点为起点,发动学生广泛参与,以点拨的形式,促成学生关键能力的提升,本文结合一节“解三角形”二轮复习微专题课进行说明.     

Poly（L—lactide）—Poly（ethylene glycol） Multiblock Copolymers：Synthesis and Properties

Poly (L-lactide)-poly (ethylene glycol) multiblock copolymers with predetermined block lengths were synthesized by polycondensation of PLA diols and PEG diacids. These copolymers presented special properties, such as better miscibility between the two components, low crystallinity and better hydrophilicity, which can be modulated by adjusting the block lengths of the two components.     

哈工大材料与化工(化学工程领域)专业硕士研究生培养的探索与实践

The status and main problems in the cultivation of master degree graduate training in materials and chemical engineering (chemical engineering field) of Harbin Institute of Technology were analyzed by applying the concept of engineering education paradigm. Combined with the professional directions of chemical engineering discipline in HIT, i.e. "one field" (new chemical material field) and "two industries" (electrochemical engineering and polymer material engineering), the revision of training program, the course constructions and the measures for engineering practice ability and innovation ability training were explored and practiced with the purpose of the cultivation of industry leaders and high-level talents in chemical engineering filed.     

PREPARATION AND PROPERTIES OF POLY （LACTIC ACID-CO-GLYCOL TEREPHTHALIC ACID） COPOLYESTER

To obtain a kind of biodegradable polymer material with satisfactory properties, a new biodegradable copolyester poly(lactic acid-co-glycol terephthalate) (PETA), was synthesized from three monomers of lactic acid, glycol and terephthalic acid. The resulting copolyesters, PETA, were characterized by FT-IR, 1H-NMR, DSC, TGA and by the ways of weight loss rate to characterize their biodegradability. The findings in this work indicated that, the TmS and TdS of copolyesters PETA increased with increasing contents of the terephthalic acid units. From the biodegradation tests in natural soil, boiling water, acid buffer solution and alkali buffer solution, it was shown that the biodegradability of copolyesters PETA decreased with increasing contents of the terephthalic acid units.     

基于真实情境组织教学 发展学生的核心素养——以“全球性的环境问题——酸雨”教学为例

针对教学实际中发现学生眼高手低、只知其一不知其二的问题，以二氧化硫的教学为例，提出基于生产、生活中有关二氧化硫的真实情境为背景来组织课堂教学。在教学中，依照“提出问题、师生活动、学生交流汇报、教师释疑解惑、共同总结整理”的程序实施教学，在细化了的、有目的的、多方位的有序互动中，充分激发学生的好奇心和求知欲，完善学生的知识结构，培养关键能力，形成必备品格。     

旋光性高分子的旋光能力（下）

在（上）中，我们讨论了结构单元及其远程作用对旋光性高分子旋光能力的影响。由于高分子具有特殊的长链结构，因而链形态对旋光能力的贡献尤其引人注目。