黄花棘豆种子中化学成分的研究

用半制备HPLC方法从黄花棘豆(OxytropisochrocephalaBunge)种子水溶性部分中分到一个新的黄酮苷和4个已知化合物。经HPLC保留时间、红外光谱、紫外光谱、核磁共振氢谱、质谱等方法推定新黄酮苷的结构2为5-甲氧基-7-羟基-3-氧-β-D-半乳糖-4'-氧-β-D-葡萄糖黄酮醇苷。     

Optical Implementation of CMOS/SEED Optoelectronic Integrated Crossbar Interconnection Network

An optical implementation of CMOS/SEED optoelectronic integrated crossbar interconnection network is reported. The CMOS/SEED smart pixel arrays with O/E light windows are used as logical controlling switch nodes. High/lower modulating ratio of the output light density is about 1.4. The light beam is supplied by a 0.85 μm semiconductor laser diode. 8×2 spot arrays formed by a computer-generated phase grating are used as the pumping light beams for CMOS/SEED light modulators. High-precision 2-D optical fiber bundle arrays are used as the I/O access devices. 16×16 optical crossbar interconnection network is realized using our experimental setup. It is easy to couple with CMOS/SEED smart pixel arrays by using 2-D optical fiber bundle arrays as the I/O access devices. Compact in comparison with other optical interconnection systems.     

自由空间光互连的发展

介绍自由空间光互连技术的发展。评述如何利用自由空间光互连技术构成互连网络和利用自由空间光互连技术在二维光电逻辑元件中实现三维光互连的早期研究、目前自由空间光互连技术在VLSI中的应用以及自由空间光互连的前景。     

Optical Implementation of CMOS/SEED Optoelectronic Integrated Crossbar Interconnection Network

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一种灵活扩充的分块式纵横制光互连网络

提出了一种新型的具有灵活扩育能力的分块式纵横制光互连网络体系结构，并给出了该网络在最大扩充时光学子系统的物理实现及相应的一些实验结果。该体系结构中可采用自电光效应器件作为高速光调制器。采用在单块ＧａＡｓ基片上集成的场效应晶体管－自电光效应器件作为逻辑光开关器件。     

Automated docking of highly flexible ligands by genetic algorithms: a critical assessment

An improved version of the fragment-based flexible ligand docking approach SEED-FFLD is tested on inhibitors of human immunodeficiency virus type 1 protease, human alpha-thrombin and the estrogen receptor beta. The docking results indicate that it is possible to correctly reproduce the binding mode of inhibitors with more than ten rotatable bonds if the strain in their covalent geometry upon binding is not large. A high degree of convergence towards a unique binding mode in multiple runs of the genetic algorithm is proposed as a necessary condition for successful docking.