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[期刊论文] 作者：LI Lian-fang,LI Guo-xue,LIAO X,
来源：环境科学学报（英文版） 年份：2004
This paper presented the characteristics of nitrogen and phosphorus pollution in Beijing surface water during the survey. A significant difference was found out...
[期刊论文] 作者：LI Li,WEI Xiantao,CHEN Yonghu,,
来源：稀土学报（英文版） 年份：2004
Tb3+ and Yb3+ codoped Lu2O3 nanophosphors were synthesized by the reverse-strike co-precipitation method.The obtained Lu2O3:Tb3+,Yb3+ nanophosphors were charact...
Effect of Thermal Shock and Oxidation on Mechanical Property of Carbon/Carbon Composites with a Sili
[期刊论文] 作者：Li Hejun,Li Kezhi,Shi Xiaohong,
来源：稀有金属材料与工程 年份：2004
A SiC whisker-toughened MoSi_2-SiC-Si coating was prepared on carbon/carbon (C/C) composites surface by a two-step technique of slurry and pack cementation, and...
[期刊论文] 作者：Li Zhengjia,Li Hejun,Qi Lehua,,
来源：稀有金属材料与工程 年份：2004
The aluminum borate whisker reinforced magnesium matrix composites (Al_(18)B_4O_(33)w/Mg) were fabricated by pressure infiltration technique and extrusion-vacuu...
[期刊论文] 作者：Li Long,Zeng Xierong,Li Hejun,,
来源：稀有金属材料与工程 年份：2004
The thermal fatigue behavior of C/C composites coated with the SiC/MBAS glass (MoSi_2 particle-containing boron aluminosilicate glass) coating, prepared by the...
Construction and Expression of Eukaryotic Expression Vector of Mature Polypeptide of Duck Interferon
[期刊论文] 作者：PEI Fucheng,LI Jingpeng,LI Lu,,
来源：东北农业大学学报（英文版） 年份：2004
To study biological activities of Duck Interferon Alpha (DuIFN-α) and prepare antivirus medicine, the eukaryotic expression vector of mature polypeptide of Duc...
[期刊论文] 作者：LI Pengli,MA Yuanyuan,LI Xiaop,
来源：科学通报（英文版） 年份：2004
Maize Lls1 (lethal leaf-spot 1) gene and its Arabidopsis orthologue AtAcd1 have been suggested to encode pheide a oxygenase (PaO), a key enzyme catalyzing chlor...
Comparison of the Photosynthetic Characteristics of Two Developmental Stages in Nostoc sphaeroides K
[期刊论文] 作者：LI Dun-hai,CHEN Lan-zhou,LI Ge,
来源：武汉大学学报（英文版） 年份：2004
The photosynthetic activities between two main developmental stages, colony and hormogonium, of the edible cyanobacterium Nostoc sphaephyll than that of colonie...
[期刊论文] 作者：LI Han,GUO Xing-qi,LI Xiang-do,
来源：中国农业科学 年份：2004
The viruses titer and the ultrastructure of infected cells in tobacco host (Nicotiana tabacum cv.Samsun), which doubly infected with potato virus Y necrosis str...
[期刊论文] 作者：HUANG RongXin,LI Dong,LI Xiang,
来源：科学通报（英文版） 年份：2004
Literatures revealed that the electron acceptor-nitrite could be inhibitory or toxic in the denitrifying phosphorus removal process.Batch test experiments were...
[期刊论文] 作者：YAN Li-long,LI Wei-guang,LI Ju,
来源：东华大学学报（英文版） 年份：2004
It is necessary to adjust reaction pH when a single kind of PO43is used as phosphorus source to remove NH4+- N in a chemical precipitation process. However, thi...
[期刊论文] 作者：CHEN Li,CHEN Bo-bin,LI Jun-jie,
来源：中华乳腺病杂志（电子版） 年份：2004
Objective To explore the activity of PEA3 ( polyomavirus enhancer activator 3 ) on CXCL12 (Chemokine CXC motif ligand 12) transcription and to reveal the role o...
[期刊论文] 作者：LI Yan,LIU Xiulin,LI Jiangang,
来源：稀土学报（英文版） 年份：2004
ZnO nanotubes were hydrothermally synthesized and the ZNTs/CeO2 fluorescent composite were prepared by introducing nano CeO2 particles into ZnO nano-tubes via a...
Microstructure and mechanical properties of Ti6Al4V powder compacts prepared by magnetic pulse compa
[期刊论文] 作者：LI Min,YU Hai-ping,LI Chun-fen,
来源：中国有色金属学报（英文版） 年份：2004
Ti6Al4V powder compaction was performed by using magnetic pulse compaction in air at 200 ℃. Effects of process parameters such as voltage, capacitance, dischar...
[期刊论文] 作者：HE De-hua,LI Xiao-qiang,LI Don,
来源：中国有色金属学报（英文版） 年份：2004
A process design approach for multi-stage stretch forming was proposed by combining the strain distribution method and finite element method (FEM) to determine...
[期刊论文] 作者：KONG Xiang-wei,LI Jia,LI Bin,
来源：中南大学学报（英文版） 年份：2004
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[期刊论文] 作者：LI Guang-hui,RAO Ming-jun,LI Q,
来源：中国有色金属学报（英文版） 年份：2004
Citric acid was used to selectively extract cobalt from limonite-type laterite ores in the presence of ammonium bifluoride. The results show that ammonium biflu...
[期刊论文] 作者：LI Peisen,LI Huanyong,JIE Wanq,
来源：稀土学报（英文版） 年份：2004
γ-La2S3 nanoparticles were successfully prepared by thermal decomposition of lanthanum complex La(Et2S2CN)3·phen at low temperature. The obtained sample was c...
[期刊论文] 作者：HE De-hua,LI Dong-sheng,LI Xia,
来源：中国有色金属学报 年份：2004
An optimization method was presented for cold stretch forming of titanium-alloy aircraft skin to determine process parameters and to reduce springback. In the o...
Effect of copper impurity on the optical loss and Nd3+ nonradiative energy loss of Nd-doped phosphat
[期刊论文] 作者：XU Yongchun,LI Shunguang,HU Li,
来源：稀土学报（英文版） 年份：2004
N31-type phosphate laser glasses doped with different concentrations of Cu were prepared. Their optical loss coefficient at 1053 nm wavelength and nonradiative...
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