Exploration of the Practical Training Program for Materials Science and Engineering Students

实践教学是材料专业人才培养的重要环节,实践教学体系是提高实践教学质量的重要保障。厦门大学材料学院紧紧围绕应用型、复合型、创新型人才培养目标,注重学生“五种能力“的培养,改革和创新材料科学与工程专业的实践教学体系,促进了学生的创新能力与实践能力的提高。Laboratory experience is vital to the students for the specialty of Materials Science and Engineering.We have devoted to produce talented scientists,highly qualified engineers and competent administrators through providing excellent education programs,innovative laboratory experiences,up-to-date facilities,leading-edge researches,and important industrial partnerships.The students are offered five levels laboratory and field trainings during their college study to improve their capability on solving practical problems and creating novel techniques and materials

材料科学与工程特色专业的建设与思考

2007年厦门大学“材料科学与工程“专业成为国家级“第二类特色专业建设点“。本文就从人才培养、课程体系、实践教学、师资队伍和人才培养质量等方面对该特色专业的建设进行了总结和阐述。教育部第二批高等学校特色专业建设点:材料科学与工程(教高函[2007]31号); 教育部“十二五”国家级实验教学示范中心:厦门大学材料科学与工程专业实验教学示范中心(教高函发不好[2012]13号); 福建省本科高校专业综合改革试点:材料科学与工程专业(闽教高[2012]41号

基于密度泛函理论计算分析磺胺类抗生素的拉曼光谱

最近我们研究组发现磺胺类抗生素在不同团聚剂作用下的表面增强拉曼光谱(SERS)会发生明显的差异。为了研究产生差异的原因,我们采用密度泛函理论(DFT)计算的方法,讨论了磺胺类分子的构型变化、构象变化、质子化以及分子间二聚体等方面的变化对其在金纳米粒子上的SERS变化的影响。国家自然科学基金项目(21533006,21621091)资

茂金属催化剂体系及其丙烯聚合性能调控

国内聚丙烯的生产基本上使用传统的Ziegler-Natta催化剂,国外已经使用茂金属催化剂.茂金属催化剂生产的聚丙烯提升了产品性能,市场需求份额逐年增加,国内需要开发茂金属催化剂并拓展工业应用.茂金属催化剂与传统的Ziegler-Natta催化剂相比,结构类型丰富,反应调控能力强,可以催化生成结构多样的聚丙烯.以茂金属催化剂的发展为主线,探讨催化剂结构对反应性能的影响;分析体系中多种因素如温度、压力、催化剂浓度、助剂等对反应活性的调控;讨论催化反应机理.中国石化茂名石化公司基金;;聚烯烃催化技术与高性能材料国家重点实验室基金;;上海市聚烯烃催化技术重点实验室基金(Nos.201501-PT-C01-005,沪CXY-2015-003,16DZ2270800,16DZ2290700);;国家自然科学基金(Nos.21473142,20673191);;教育部创新团队基金(No.IRT_14R31)资助项目~

Advances in Selective Ethylene Oligomerization Based on [PNP]-Ligand Chromium Catalysts

乙烯选择性三聚和四聚催化反应为制备1-己烯和1-辛烯提供了重要途径.在报道和披露的众多结构和组成的催化剂体系中,我们选择[PnP]配位骨架的铬催化剂体系,对其发展和应用进行了综述.论文以结构与催化性能的关联性为主线,阐述[PnP]骨架以及n和P上取代基的电子和立体空间效应对催化性能的影响.从目前的研究态势来看,[PnP]配位骨架的铬催化剂体系在乙烯选择性齐聚生产1-辛烯等线性α-烯烃方面具有发展潜力.The catalytic reaction for the selective ethylene trimerization and tetramerization provides a vital route to the production of 1-hexene and 1-octene.Among the numerous catalysts reported with diverse structures and compositions, we select the [PNP]-ligand based chromium catalysts and focus on illustration on their development and application.This contribution includes seven sections as ethylene(selective) oligomerization catalyst systems, [PNP]-ligand based Cr catalyst system, catalytic mechanism, ethylene oligomerization method, catalytic property, and conclusion and prospect, which will cover almost all of the [PNP]-ligand based Cr catalysts so far studied.In this article, we will mainly discuss the influence on the catalytic property owing to the electronic and/or steric characters of the skeleton as well as the substituents at both N and P atoms of the [PNP]-ligands.In view of the current advances in this field, this [PNP]-ligand based Cr catalyst system is of potencial in application for the production of LAO mainly as 1-octene.聚烯烃催化技术重点实验室基金(No.12DZ2260400); 国家自然科学基金(No.21473142); 教育部创新团队(No.IRT_14R31)资助项目~

双组分系统和鞭毛相关蛋白的研究进展

Flagella is the motile organ of bacteria, and bacteria are driven by the flagella to move toward the best niche that is beneficial to their survival. The rotary direction of flagella is controlled by the flagellar motor. Chemotactic two-component system is an important link between the external signal stimulation and bacterial flagellar movement. The rotor of the flagellar motor is at the output of the bacterial chemotaxis pathway. Both of them contribute to the formation of biofilm, quorum sensing, stress response, and bacterial virulence. Based on their close relationship and important physiological roles and, the advances of the effect of chemotactic two-compo nent system and flagella-related proteins were reviewed in this paper</p

高原浅水湖泊沉积物中磷、氮形态化学研究

以滇池马村湾和海东湾为研究对象,对其沉积物-间隙水-上覆水三界面中的磷、氮形态作研究,其中钙结合态磷占的比例最大,其次是有机/细菌聚合态磷和残渣磷;总氮含量很高,平均值为2.63mg/g,而亚硝酸盐氮含量很低,其它三种无机氮形态(硝酸盐氮、亚硝酸盐氮和氨氮)之间并不存在恒定的化学计量关系,这主要是无机氮循环还受水体和沉积物中有机氮的影响。调查还表明沉积物中Fe-P含量与间隙水中溶解性磷酸盐磷有着较好的线性关系,沉积物中Fe-P含量与间隙水Eh呈对数关系

The response of Chinese scholars to the question of “How did cooperative behavior evolve?”

合作+行为普遍存在于动物界和人类社会. 然而, 在激烈的生存斗争中, 合作行为的成因是难以被理解的一个谜题. Science在2005年把&ldquo;合作行为是如何进化的&rdquo;这一问题列为125个科学前沿问题之一. 本文从中国学者的角度出发, 梳理了国内研究者在合作行为这一领域的研究总体态势及研究现状, 进而从理论模型、行为学、神经基础、分子遗传学等角度探讨了合作行为的机制. 最后总结并讨论了中国学者在合作领域进行研究所拥有的优势及存在的不足, 并对今后的研究进行展望.</p