就业胁迫下的高师地图学开放式教学实践体系研究

由于国家在教师教育政策上的倾斜,大量非师范高校毕业生走上中小学教师岗位,中小学教师空余岗位越来越少.因此当前师范院校地理学专业就业形势严峻,而工程技术专业社会需求量巨大.通过加强高等师范院校地理学专业地图学课程相关实践技能练习,探索一种适合当前社会形势的地图学课程开放式教学体系.     

Influence of surfactant concentration on counter-ion induced solubility of poly（pyridine-2,5-diyl）

INTRODUCTION Preparation and electrical properties ofpoly(arylene)s having π-conjugation system along thepolymer chain are the subject of recent interest(Skotheim et al., 1997; Nalwa, 1997; Yamamoto,2002). Among the poly(arylene)s, poly(p-phenylene),poly(pyridine-2,5-diyl) and poly(thiophene-2,5-diyl)are the most fundamental polymers and had beenextensively studied (Skotheim et al., 1997; Yama-moto, 2002; Nurulla et al., 2001). However, thesepolymers show only…     

Photochemical reactions of poly（3-butoxythiophene-2,5-diyl） with chloroform

INTRODUCTION π-conjugated polymers have received a great deal of attention because of their unique chemical and physical properties, including electrochromism, electrically conducting properties, chemical sensing ability, and electroluminescent properties. Their structures, synthetic methodologies, and physical and chemical properties were intensely studied in the past two decades (Friend et al., 1999; Heeger, 2001; Ya-mamoto, 2002). Especially, processable derivatives of polythiophene …     

充分认识思想政治工作进学生公寓的重要性

二十一世纪,经济的多样化、生活方式的多样化、社会组织形式的多样化、就业形式的多样化必然带来人们思想观念的多样化,新时期的学生思想政治工作必须根据变化的特点有效地开展工作。如何使思想政治工作进学生公寓并发挥积极的作用,是一个全新的课题。