Energy transfer mechanism of PBS-thylakoid complexes

Conclusion In this work, we studied the energy transfer mechanism among PBS and two reaction centers (PS I and PS II) in PBS-thylakoid complexes by using steady-state spectra (77 K) and spectral deconvolution techniques. The experimental results indicated that the PBS-thylakoid complexes could perform the function of light state transition just like intact algae cell, and confirmed that PBSs were directly connected with PS I and PS II reaction centers separately. The energy transfer pathways from PBSs to two reaction centers are PBS-PS I and PBS-PS II.     

新公共管理运动及其对我国公共研发资助管理的启示

本文简要回顾了新公共管理运动兴起的背景及各国的实践,分析了新公共管理的理念,并对其进行了反思和讨论。在此基础上,提出了新公共管理运动对我国公共研发资助管理的启示。     

水提法生产左旋多巴的工艺研究及优化

为研究开发一种新的环境友好的、从猫豆中提取左旋多巴（L-dopa）的生产工艺,用弱酸性水将猫豆磨成水浆,常温下用聚丙烯酰胺（PAM）沉淀去除提取液中的固体颗粒,过滤,滤液煮沸后冷却至室温,再次用PAM沉淀去除热变性析出的蛋白和淀粉,过滤,滤液浓缩,析出L-dopa粗品;粗品用热稀HCl精制,即可得到L-dopa产品;采用L₉（3⁴）正交试验法优选关键工序的工艺参数。结果表明：工艺不排放高含淀粉、蛋白、HCl和NaOH废水。试产3批,平均每批投料猫豆200 kg,L-dopa产品平均得率2.41%,平均含量99.84%,与传统工艺相当;含量和相关物质符合《中国药典》和《欧洲药典》要求。该生产工艺合理可行,绿色环保,适合于工业化规模生产。     

Synthesis and energy transfer of model conjugate of phycobilisome rods

The conjugate of R-phycoerythrin (R-PE) and C-phycocyanin (C-PC) was synthesized through a heterobifunctional coupling reagent, N-succinimidyl 3-(2-pyridyldithio) propionate. The molar ratio of R-PE to C-PC was determined by absorption spectra, and the result was 2:1. The energy transfer phenomena were observed from steady-state fluorescence spectra. The calculated result showed that the energy transfer efficiency from R-PE to C-PC was 88%. The energy transfer kinetics was determined by picosecond time-resolved fluorescence spectra. The time constant of energy transfer from R-PE to C-PC was 80 ps, which was much longer than that in the rod of native phycobilisomes.     

The properties of CdTe solar cells with ZnTe/ZnTe： Cu buffer layers

CdS/CdTe solar cells with ZnTe/ZnTe:Cu buffer layers were fabricated and studied. The energy band structure of it was analyzed. The C-V, I-V characteristics and the spectral response show that the ZnTe/ZnTe:Cu buffer layers improve the back contact characteristic properties, the diode characteristics of the forward junction and the short-wave spectral response of the CdTe solar cells. The ZnTe/ZnTe:Cu buffer layers affect the solar cell conversion efficiency and its fill factor.     

Model of chromophore coupling in allophycocyanin aggregation

A new model is proposed to study the interaactions among chromphores in APC trimer. Using this model, the electronic transition frequencies are calculated. The results are in good agreement with the experimental.     

关于提高高校设备采购效率的思考

如何在法律法规许可范围内,快速、高效地完成各项设备采购任务,是高校设备采购工作者面临的一项重要而又紧迫的任务。通过分析影响高校设备采购效率的主要因素(采购量及作业时间)并针对存在问题提出了应对措施。     

美国国家科学基金会雇员利益冲突政策及思考

本文通过对《利益冲突与道德行为标准——美国国家科学基金会手册》进行分析，深入剖析了美国国家科学基金会有关雇员利益冲突政策的规范对象、基本目标、具体事项及其政策设计的特点，进而提出了对我国科技管理部门加强工作人员职业道德建设的几点思考。     

Support Operator’s Fault Diagnosis of Complex Plant Systemthrough Multilevel Flow Model and Ecological Interface Design

1 IntroductionModern man-made systems have become more and morecomplex to achieve many automatic and intelligent tasksinstead of be executed by human beings .However ,since theprimaryrole of the systemoperationshould be human beings ,the challenge tothe operating support systemhas beenledtoa paradoxical situation. They should be complex themselvestotake charge of the complex interaction of the systemandsolve such difficult tasks such as fault diagnosis and processcontrol inone hand,and alsothe…     

Study of A Multi-criteria Evaluation Methodology for Nuclear Fuel Cycle System Based on Sustainability

1Introduction Thegrowthofworldpopulationandtherapidgrowthofeconomicactivityhavecausedthe worldwideconcernsontheissuesofenergyshortageandglobalclimatechange.Sincethe energyconsumptionhassomewhatrelationshipwiththeglobalclimatechangeandtheemergence ofanti nuclearprotest,theenergyissueshavebecomepoliticalandpublicissues.Therelated stakeholderswithdifferentinterestsandpreferencesbegantocaretheassessmentforvariousenergysystems.Theevaluationforenergy systemhasalsochangedfrommonetaryevaluation,suchas…