Structure and function of PBS model complex

A complex of phycobiliproteins, containing phycoerythrocyanin (PEC), C-phycovyanin (C-PC) and allo-phycocyanin (APC) as well as some linker polypeptides, was reconstructed. The absorption and fluoreacence spectra of the complex were compared with those of native phycobilisomes (PBS) and the phycobiliproteins. Based on the measured data, it can be concluded that the complex can be taken as a model of PBS and is an entirely functional group for excitation energy transfer step by step from peripheral PEC to APC. The single terminal emitter feature of the complex makes it favorable for clarifying energy transfer pathways and the kinetics in comparison with native PBS. Further research is carried on in the lab.     

真空共蒸发法沉积的ZnTe：Cu薄膜

用真空共蒸发法沉积了ＺｎＴｅ和ＺｎＴｅ：Ｃｕ多晶薄膜,研究了Ｃｕ含量对薄膜结构和电学性能的影响。发现刚沉积的ＺｎＴｅ薄膜和轻掺杂的ＺｎＴｅ：Ｃｕ薄膜的结构均为高度（１１１）择优取向的立方相。掺杂浓度较高的ＺｎＴｅ：Ｃｕ薄膜除了立方相外,还存在六方相。重掺杂薄膜中（１１１）择优取向消失。在ＺｎＴｅ：Ｃｕ薄膜中观察到反常的暗电导温度关系曲线。薄膜的光学能隙在２．１５～２．２１ｅＶ之间。用结构相变的观点对实验现象作了解释。     

加强高职院校设备采购工作的思考

如何做好高职院校设备采购工作,提高公共财政资金的使用效益,是一个值得重视的问题。文章从梳理设备采购流程出发,对采购预算、项目论证、采购方式选择、招标文件编制、合同签订、质量验收等几个重要环节进行了探索性的思考,并针对存在问题提出了应对措施。     

藻胆体杆核复合物的能量传递途径研究

研究了藻胆体杆核复合物在低温（７７Ｋ）下时间分辨荧光光谱，讨论了激发能量传递过程以及途径．实验结果说明低温下藻胆体的能量传递途径有２条，１条经过核中的中间受体，另１条不经过核中的中间受体．     

A－B－A型甲基丙烯酸酯嵌段聚物的合成

Ａ－Ｂ－Ａ型甲基丙烯酸酯嵌段聚物的合成戴李宗，郭金全，邹友思，姚青青，潘容华（化工系）以基团转移聚合法（ＧＴＰ）［１］和顺序加入单体技术，实现了甲基丙烯酸甲酯（ＭＭＡ）和甲基丙烯酸Ｃ７－９酯（Ｃ７－９ＭＡ）的嵌段活性聚合．采用双官能团引发剂，减少了单...     

同向共轭曲线与两类界点

本文利用共轭曲面上的同向共轭曲线概念，推导出共轭曲面上的两类界线点的条件，并导出了一类界点条件Φ＝ψ＝０的几种等价条件，使解决一类界点的困难问题简化。     

Progress in phototaxis mechanism research and micromanipulatlon techniques of algae cells

Pholotaclic movement is a characteristic of some microorganisms' response to light environment. Most of the algae have dramatically phototactic responses, underlying the complicated biological, physical and photochemical mechanisms are involved. With the development of the micro/nano and sensor techniques, great progress has been made in the research of the algae phototaxis. This review article summarizes the progress made in the research on the functional phototactic structures, the mechanisms of photo-response process and photodynamics of phototaxis in algae, and describes the latest developed micro-tracking technique and micromanipulation technique. Moreover, based on our own research results, the potential correlation between the phototaxis and photosynthesis is discussed, and the directions for future research of the phototactic mechanism are proposed.     

浅议科学学派与科技创新

纵观世界科技史,许多重大科学发现和科学理论的提出都与科学学派有关.科学学派作为一种成熟的科研组织,在近代曾极大地推动了科学研究的发展.20世纪以来,科学学派在现代科学发展和科技创新活动中发挥着越来越积极的作用.     

试析海上风机在强台风下叶片受损风险与对策——考察红海湾风电场的启示

2003年9月近海丘陵区风电场——汕尾红海湾风电场风机叶片被台风“杜鹃”吹坏。从破坏形式可以断定叶片曾发生大幅度扭转颤振而且与不利地形有关。从这一实例来看,同等强度台风情况下海上风机叶片受损的风险可能低于海岸风机,因为海面平坦,不具备风向局部变化条件。此次风灾也表明,保持风机处于停转顺桨,但可偏航的暂停状态是叶片防损的关键。