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REACTION OF C_60 AND 2-AMINO-ETHYLHYDROGENSULFATE

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chinese Chemical Letters 1995年第3期6卷 199-200页

作者： Liang Bing GAN De Jian ZHOU Chu Ping luO Chun Hui HUANG Jin Qi PAN Mu Jian lu (department of {3.,Peking university.{3..100871)Yi WU({3. institute of Micro{3.,{3..100091) beijing Univ Dept Chem Beijing 100871 Peoples R China beijing Inst Microchem Beijing 100091 Peoples R China

C60 reacts with 2-aminoethylhydrogensulfate to give a mixture of mono-and bispiperazine fullerene adducts C60(C4H8N2)1-2 and a water-soluble fullerence derivative C60Hn(NHCH2CH2OSO3.a)n.

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DETERMINATION OF VOLATILE PHENOLS IN chinese LIQUORS BY GC-MS

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chinese Chemical Letters 1990年第2期1卷 187-190页

作者： Chun Sheng LIU Jia Rui GUAN Mao Sun lu Chang Tai YAN institute of Materia Medica,chinese {3. of Medical {3.,beijing,China 100050 chemistry department,Shandong university,Jinan,China 250100 chemistry department,Qingdao university,Qingdao,China 266071

A new method for determining volatile phenols in chinese liquors is proposed. Phenols are sorbed on a macroporous anion-exchange resin after the liquors were brought to a pH value of 12.5,then eluted with HCl-acetone,extracted with methylene dichloride and concentrated to a suitable concentration for derivatization with pentafluorobenzyl bromide (PFB).The PFB derivatives of phenols were successfully separated by gas chromatography on a 3. m SE-54 elastic glass capillary column and detected with Ni-63.electron capture detec- *** characteristics of this method are:high sensitivity,low interference and 95% average recovery of *** method was used successfully in the determination of vola- tile phenols in eight kinds of chinese liquors.

关键词： SE GC

Principle of a Multistage Electroosmotic Pump and Its Application in Microfluidic Chip

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Principle of a Multistage Electroosmotic Pump and Its Applic...

STUDIES ON ION BEAM APPLICATION TO IMPROVE AQUATIC MACROPHYTE REMEDIATION CAPACITY IN EUTROPHIC WATERS

第二届全国微全分析系统学术会议

作者： CHEN Ling-Xin, GUAN Ya-feng (department of chemistry, {3. university, beijing 100084, China Dalian institute of Chemical Physics, chinese academy of sciences, Dalian 116012, China)

＜正＞ In the past decade,a variety of microfabricated pumps and fluid-handling systems based on ultra-sonic,electricity,light,magnet and heat actuated technologies were reported,which could be clas-sifted into two groups:membrane-displacement pumps and field-induced flow *** advantageof field-induced flow pumps over the former is that they do not require moving parts,such as check

关键词： Electroosmotic pump Multi-stage Micro total analysis system

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水生生物学报 2006年第6期30卷 711-717页

作者： LI Miao1, WU Yue-Jin 1, ZHANG Jun 1, YU Han-Qing 2, WU Xiao-Lei 3.and YU Zeng-Liang 1 (1. Key Laboratory of Ion Beam Bioengineering, institute of Plasma Physics, the chinese academy of {3., Hefei, China 23.03. 2. School of chemistry and Material Science, the university of Science and Technology of China, Hefei, China 23.026 3. department of Environmental Science and Engineering, tsinghua university, beijing, China 100084 ) institute of Plasma Physics the Chinese Academy of Sciences Key Laboratory of Ion Beam Bioengineering CAS Hefei 230031 School of chemistry and Material Science the University of Science and Technology of China Hefei 230026 department of Environmental Science and Engineering Tsinghua University Beijing 100084

Using ion beam biotechnology in combination with soil-less plant cultivation on artificial substratum (floating beds), the experiments were conducted with Ipomoea aquatica Forsk. Plants were attached to floating-beds which were placed on the surface of artificially nutrient-enriched tank water, in order to study the purification and remediation efficiency of ion beam-treated I. aquatica cultivars. The results show that N + ion beams with 25keV energy and dosages of 0, 2.6, 3.9, 5.2, 6.5, 7.8, 9.1×10 13. +(ions)/cm 2 affected I. aquatica dry seeds differently, with the dose of 3.9×10 13. + (ions)/cm 2 improving effectively the performance as expressed by various biological indices. After ion beam application, I. aquatica cultivars grew well in nutrient-enriched water bodies, increasing the growth of leaves and stem, number of leaves, length and area of roots, plant height, and weight more remarkably than observed in the control. The net removing rates of TN, TP were as high as 75% and 82%, respectively. Especially under the dose of 3.9×10 13. +(ions)/cm 2, the net removing rates of TN, TP were highest, for 77% and 85%, respectively. It was proved that ion beam application improves phytoremediation and may be used to purify nutrient rich water bodies.

关键词： Ion beam treatment Aquatic macrophyte Ipomoea aquatica Forsk Nutrient-enriched waters Remediation capacity

A NEW FLAVONE FRON EPIMEDIUM KOREANUM

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chinese Chemical Letters 1994年第12期5卷 1033-1034页

作者： Wen Kui LI Pei Gen XIAO(institute of Medicinal Plant Development, chinese academy of Medical {3. and Peking Union Medical college, beijing 100094)Jing Qi PAN Mu Jian lu (department of chemistry, Peking university. beijing 100871)Ru Yi ZHANG (School

A new flavone, epimedokoreanin D was isolated foam the aerial parts of Epimedium koreanum. Its structure was determined by spectroacopie methods(UV, IR, MS, 1H NMR, 13. NMR, DEPT) and chemical evidences.

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Passivation and control of generalized Hamiltonian systems with internal generating energy

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Passivation and control of generalized Hamiltonian systems w...

A novel hyperbranched conjugated polymer for electroluminescence application

第二十一届中国控制会议

作者： XI Zai-rong, lu Qiang, CHENG Dai-zhan ( institute of Systems Science, academy of Mathematics and Systems Science,{3. academy of sciences, beijing 100080 department of Electrical Engineering, tsinghua university, beijing 100084)

＜正＞Passivity-based control （PBC） is a good technique for the design of control system. It is very useful to design a control law such that the closed-loop system is passive. The procedure is said to be passivation. In this paper we consider the passivation problem of generalized Hamiltonian control systems with internal generating energy. The main result is that this kind of Hamiltonian control system can be passivated if the structure matrix of generating energy elements can be skew-symmetrized or dissipated. In the last a multimachine power system with steam valve is considered as an example. Through this method a decentralized steam valving control scheme is proposed.

关键词： generalized Hamiltonian control systems internal generating energy steaming valving passive system

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A novel hyperbranched conjugated polymer for electroluminesc...

Utilizing dual-pathway energy transfer in upconversion nanoconjugates for reinforced photodynamic therapy

第九届全国发光学术会议

作者： Lian Duan, Liduo Wang, Yong Qiu,Qingguo He , fenglian Bai , Xiaoyin Hong Organic Optoelectronics Lab, department of chemistry, {3. university, beijing, 100084, PRC Laboratory of Organic Solids, institute of chemistry, The chinese academy of sciences, beijing, {13., PRC

Conjugated polymers are now the focus of industrial interest for light-emitting diodes (LEDs), andother optoelectronic applications. In this report, we report on the PL and EL properties of a novelhyperbranched conjugated polymer composed of 1,3.5-trivinylicbenzene cores and(2,5-dimethoxyl)-1,4-phenylenevinylene connecting units (HB2).

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Nano Research 2024年第4期17卷 2941-2948页

作者： Ruohao Zhang Yu lu Yifei Zhou Kehong Lv Xinyu Fu Jitong Gong Shuang Yao Xiaozhen Wang Jing feng Hongjie Zhang State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China School of Applied chemistry and Engineering University of Science and Technology of ChinaHefei 230026China College of chemistry Jilin UniversityChangchun 130012China department of Breast Surgery General Surgery Centerthe First Hospital of Jilin UniversityChangchun 130021China department of chemistry Tsinghua UniversityBeijing 100084China

Enhancing the therapeutic effect of existing treatments or developing new non-invasive treatments are important measures to achieve high-efficiency treatment of malignant *** therapy(PDT)is an emerging treatment modality,and the key for achieving high-efficiency PDT is to select light with strong tissue penetration depth and enhance the generation of reactive oxygen species(ROS).Although the upconversion nanoparticles(UCNPs)modified with the photosensitizers could achieve PDT with strong penetration depth under near-infrared light irradiation,the ROS generated by traditional single-pathway PDT is still ***,we developed a novel nanoconjugate(UCNP-Ce6/AIEgen)for dual-pathway reinforced PDT,in which the UCNPs were co-modified with chlorin e6(Ce6)and luminogen with aggregation-induced emission(AIEgen).Due to the presence of AIEgen,UCNP-Ce6/AIEgen could avoid aggregation-caused luminescence quenching in biological water environments and convert upconversion luminescence(UCL)of UCNPs to Ce6-activatable ***,under the irradiation of 808 nm laser,UCNP-Ce6/AIEgen can not only undergo direct lanthanide-triplet energy transfer to activate Ce6,but also convert the UCL of UCNPs to the light that can activate Ce6 through Fӧrster resonance energy transfer to generate more ROS,thus promoting tumor cell *** work broadens the applications of nanoconjugates of lanthanide-based inorganic materials and organic dyes,and provides a conception for reinforced PDT of tumors.

关键词： upconversion nanoparticle aggregation-induced emission direct lanthanide-triplet energy transfer Förster resonance energy transfer photodynamic therapy

Crystal Structure of Taxinine A

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chinese Journal of Structural chemistry 1996年第5期15卷 387-390页

作者： WU Nan lu Yang ZHENG Qi-Tai FANG Wei-Shuo TONG Xiao-Jie FANG Qi-Cheng (institute of Materia Medica, chinese {3. of Medical {3. & Peking Union Medical College, beijing, 100050)WU De-Dong XUE feng Thomas C.W. Mak (department of chemistry, The institute of Materia Medica Chinese Academy of Medical Sciences Peking Union Medical College Beijing 100050 department of chemistry Chinese University of Hong Kong Hong Kong Hong Kong

Here reported is the crystal structure of taxinine A (C_(26)H_(3.)O_8, Mr=476.76) which was isolated from the needles of Taxus cuspidata. The crystal belongs to monoclinic system, space group is P2_1 with a=9. 122 (2), b=10.451 (3., c=13.661(2),β=93. 92(1)°,Z=2, V=1299.3.5), D_x=1.218 g/cm￣3. F (000)=512,μ=0.08 mm-1, and the final R-factors are 0. 061 (Rf) and 0. 056(Rw) for 1796 observed diffractions. The molecule taxinine A is one of the taxane diterpenoids which possesses 6-8-6 fused tricycle skeleton.

关键词： taxinine A crystal structure antitumor activity