Synthesis of glucoside compounds of ferrocenyl phenols and their antianemic activity

Six glucoside compounds have been synthesized by means of phase-transfer catalytic method and deacetylation from the starting material ferrocene. Their structures have been confirmed by elementary analysis, IR,¹HNMR and MS. The antianemic activities of some compounds have also been tested. Results indicate that these glucoside compounds possess the antianemic activities and therefore, the further study is well worth making. Supported by the foundation of Wuhan Metropolis Commission of Science and Technology Liu Huiying: born in 1937, Professor     

Spectrum characteristics and pump wavelengths of Nd3+-doped double-clad fiber

Conclusion The optimum wavelength of Nd³⁺-doped double-clad fiber laser or amplifier made in China is near 830 nm. The efficiency of Nd³⁺-doped double-clad fiber devices pumped by 820-nm laser is low due to ESA. In order to increase the photochemical stability of the outer cladding, the material of the outer cladding must be advanced.     

Collaborative applications based on the internet

The basic concepts of collaborative applications and some relevant aspects about network communications are introduced. With the examples of some collaborative applications developed by us, several technical problems about collaborative applications, such as loss of data packets, unknown IP address and timedelay, are discussed in detail. And the methods of solving these problems are also provided. Supported by International Cooperation Project (Japan, Jincheng Co. Ltd) Fang Rui: born in 1975, Graduate student     

黄土丘陵区与黄土塬区地貌发育规律对比及与水土流失的关系──以米脂、洛川为例

通过对以米脂、洛川为代表的典型黄土丘陵区、黄土源区的野外考察，认为它们之间存在着黄土披盖形式、地貌发育规律等方面的差异．这种差异明显表现于二者沟谷发育特点及发育规律上，导致沟谷延伸速度的显著不同两地区水上流失形成主要受各自不同的地貌发育规律控制，均需经历一个较长的强水土流失期．     

露天矿山高陡岩石边坡失稳的三维离散元分析

通过对大冶露天矿边坡失稳的三维离散元分析，讨论了边坡失稳原因，不仅为滑坡防治提供了参考依据，对高陡岩岩边坡失稳机制的认识也提供了参考。