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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2010年第3期11卷 191-201页

作者： li-hua LUO hong liu Ping li Hui WANG State Key Laboratory of Industrial Control Technology Zhejiang UniversityHangzhou 310027China

For automated vehicles,comfortable driving will improve passengers’ *** fuel consumption brings economic profits for car owners,decreases the impact on the environment and increases energy *** addition to comfort and fuel-economy,automated vehicles also have the basic requirements of safety and *** this purpose,an adaptive cruise control (ACC) algorithm with multi-objectives is proposed based on a model predictive control (MPC) *** the proposed ACC algorithm,safety is guaranteed by constraining the inter-distance within a safe range; the requirements of comfort and car-following are considered to be the performance criteria and some optimal reference trajectories are introduced to increase *** performances of the proposed ACC algorithm are simulated and analyzed in five representative traffic scenarios and multiple *** results show that not only are safety and car-following objectives satisfied,but also driving comfort and fuel-economy are improved significantly.

关键词： Adaptive cruise control (ACC) Multi-objectives Comfort Fuel-economy Model predictive control (MPC)

Balanced energy-efficient relay selection scheme in wireless mobile relay networks

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High Technology Letters 2010年第3期16卷 235-240页

作者： liu Wei Ji hong li Xi Key Laboratory of Universal Wireless Communications Ministry＂ of Education Beijing University of Posts and Telecommunications Beijing 100876 P.R. China

In order to resolve the relay selection problem in wireless mobile relay networks （WMRNs）, a novel balanced energy-efficient mobile relay selection scheme is proposed in this paper. Compared with traditional counter-based algorithm, distance and energy consumption are considered from network respect to provide a better network lifetime performance in the proposed scheme. Also, it performs well when nodes move freely at high speed. A random assessment delay （RAD） mechanism is added to avoid collisions and improve transmission efficiency. Simulation results reveal that, the proposed scheme has advantages in prolonging network lifetime, balancing energy compared with existing counter-based scheme. consumption and reducing the total energy consumption

关键词： relay network lifetime energy-efficient wireless mobile relay network (WMRN) random assessment delay(RAD)

Puerarin attenuates angiotensin Ⅱ-induced cardiac fibroblast proliferation via the promotion of catalase activity and the inhibition of hydrogen peroxide-dependent Rac-1 activation

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Chinese Journal of Natural Medicines 2018年第1期16卷 41-52页

作者： CHEN Gang PAN Shi-Fen CUI Xiang-li liu li-hong Department of Pharmacy Beijing Chao-Yang Hospital Capital Medical University Beijing 100020 China

The aims of the present study were to evaluate the effects of puerarin on angiotensin II-induced cardiac fibroblast proliferation and to explore the molecular mechanisms of action. Considering the role of H202 in nicotinamide adenine dinucleotide phosphate （NADPH） oxidase activation, we hypothesized that modulating catalase activity would be a potential target in regulating the redox-sensitive pathways. Our results showed that the activation of Rac 1 was dependent on the levels of intracellular H202. Puerarin blocked the phosphorylation of extracellular regulated protein kinases （ERK）1/2, abolished activator protein （AP）-1 binding activity, and eventually attenuated cardiac fibroblast proliferation through the inhibition of H202-dependent Racl activation. Further studies revealed that angiotensin II treatment resulted in decreased catalase protein expression and enzyme activity, which was disrupted by puerarin via the upregulation of catalase protein expression at the transcriptional level and the prolonged protein degradation. These findings indicated that the anti-proliferation mechanism of puerarin was mainly through blocking angiontensin II-triggered downregu- lation of catalase expression and H202-dependent Racl activation.

关键词： Angiontensin II Puerarin Catalase Hydrogen peroxide

Preparation of High Selective Molecularly Imprinted Polymers for (S)-4-Phenyl-2-oxazolidinone

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Chinese Chemical Letters 2006年第12期17卷 1551-1554页

作者： Yong LUO Lan liu li hong li Qin Ying DENG School of Chemistry and Chemical Engineering Sun Yat-Sen University Guangzhou 510275

（S）-4-Phenyl-2-oxazolidinone imprinted polymers were prepared by using methacrylic acid （MAA） as the functional monomer, and divinylbenzene （DVB） as crosslinker. The factors, which influence the selectivity of the polymers were explored. Effective separation was observed for racemic 4-phenyl-2-oxazolidinone in mobile phase of acetonitrile. The investigation of mobile phase suggested that the hydrogen bonds between template and functional monomer was a primary factor in chiral recognition, while the preparation of polymers implied that the л-л stacking interaction between template and crosslinker played a role in imprinting procedure.

关键词： Molecularly imprinted polymers (MIPs) 4-phenyl-2-oxazolidinone HPLC.

Relative Permittivities for Glucose+Glycine+Water Solution at 278.15 to 313.15 K

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Chemical Research in Chinese Universities 2011年第5期27卷 880-885页

作者： ZHUO Ke-lei liu Qian-ge liu hong-xun li Na-na CHEN Yu-juan School of Chemistry and Environmental Science Henan Normal University Xinxiang 453007P. R. China

The relative permittivities（ε） for the glucose＋glycine＋water mixtures were measured at temperatures of 278.15 to 313.15 K. The experimental values for a complete data set were critically analyzed. The experimental va- lues were fitted to some empirical equations as the functions of temperature and/or compositions of the solution. At given temperatures and compositions of glycine, the dependences of the relative permittivities on the molar fraction of glucose（Glc） and glycine（Gly） can be described by a linear or quadratic equation, respectively. A comparison of the εGlc values of glucose solution with the εGla values of galactose solution indicates that the relative permittivities of the ternary solutions containing glucose are smaller than those containing galactose under the same conditions. This difference arises from the slight difference in the stereo-structures of the saccharide molecules.

关键词： Relative permittivity D-(+)-Glucose Glycine

Interaction of Photoactive[Fe(CN)_6]^(4-) with TiO_2 Anatase(101) Surface:A Periodic Density Functional Theory Study

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Chinese Journal of Structural Chemistry 2007年第3期26卷 361-366页

作者： XU Ying CHEN Wen-Kai CAO Mei-Juan liu Shu-hong li Jun-Qian Department of Chemistry Fuzhou University Fuzhou Fujian 350002 China

The plane-wave pseudopotential function method, based on density-functional theory, has been used to calculate the adsorption, electronic band structures, orbitals and optical absorption spectrum of [Fe（CN）6]^4- on TiOz anatase（101） surface. Our calculations reveal that the surface-modified anatase system has large adsorption energy and a much narrower band gap. [Fe（CN）6]^4- adsorption on the （101） surface could lead to a large red shift of the anatase optical absorption threshold, which extends into a visible region significantly. The calculated results are in agreement with the experiment and other theoretical studies reasonably. It is very important for the understanding and further development ofphotovoltaic materials that are active under visible light.

关键词： density functional theory (DFT) [Fe(CN)6]^4- anatase(101) surface adsorption absorption

Synthesis of Iron Chlorophyllins and Their Catalytic Performance for Aerobic Oxidation of Cyclohexene

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Chemical Research in Chinese Universities 2013年第3期29卷 526-532页

作者： liu Xiao-hong li Yong-jin YANG Wei-jun GUO Can-cheng College of Chemistry and Chemical Engineering Hunan University Changsha 410082 P. R. China

A series of iron（III） chlorophyllins was prepared from silkworm excrement crude chlorophyll extract as a raw material. Aerobic oxidation of cyclohexene by using the prepared iron（III） chlorophyllins as biomimetic catalysts was studied under atmospheric pressure in the absence of reducing agent and solvent. The results indicate that chloro- phyll iron porphyrins have better catalytic performance than the industrial-applied iron tetraphenylporphyrin and cobalt tetraphenylporphyrin, and possess a higher selectivity for 2-cyclohexen-1-one. The smaller the polarity of iron（III） chlorophyllin＇s ligand is, the easier the catalytic oxidation of cyclohexene will be. Esterification products of iron（III） chlo- rophyllins can catalyze the oxidation of cyclohexene better than non-esterified iron（III） chlorophyllins, and therefore show a higher conversion of cyclohexene and a higher selectivity for 2-cyclohexen-l-one than the non-esterified ones. Among the six synthesized iron（III） chlorophyllin catalysts, iron（III） methyl-pyropheophorbide-a is the best biomimetic catalyst for the highest conversion of cyclohexene. The influences of catalyst＇s substituent, polarity and ring structure on the catalytic performance were discussed. The catalytic performance of iron（III） chlorophyllins improves with decreasing polarity, increasing conjugated degree of porphyrin＇s ring or enhancing chlorophyllins＇ stability. Possible mechanism of cyclohexene aerobic oxidation catalyzed by iron（III） chlorophyllins was also discussed.

关键词： Chlorophyll Iron chlorophyltin Air Cyclohexene Catalytic oxidation

Ribosomal Protein Genes S23 and L35 from Amphioxus Branchiostoma belcheri tsingtauense:Identification and Copy Number

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Acta Biochimica et Biophysica Sinica 2005年第8期37卷 573-579页

作者： Xian li Shi-Cui ZHANG~* Zhen-Hui liu hong-Yan li Department of Marine Biology,Ocean University of China,Qingdao 266003,China Department of Marine Biology Ocean University of China Qingdao 266003 China

The complete cDNA and deduced amino acid sequences of the ribosomal proteins S23(AmphiS23)and L35(AmphiL35)from amphioxus Branchiostoma belcheri tsingtauense were identified inthis ***23 cDNA is 546 bp long and encodes a protein of 143 amino *** has a predictedmolecular mass of 15,851 Da and a pI of ***35 cDNA comprises 473 bp,and codes for a proteinof 123 amino acids with a predicted molecular mass of 14,543 Da and a pI of ***23 shares morethan 83% identity with its homologues in the vertebrates and more than 84% identity with those in ***35 is more than 63% identical to its counterparts in the vertebrates and more than52% identical to those in the *** blot analysis demonstrated the existence of 1-2 copiesof the S23 gene and 2-3 copies of the L35 gene in the genome of amphioxus *** *** in sharp contrast to the presence of 6-13 copies of the S23 gene and 15-17 copies of the L35 gene in therat *** is clear that the housekeeping genes like S23 and L35 underwent a large-scale duplication inthe vertebrate lineage,reinforcing the gene/genome duplication hypothesis.

关键词： amphioxus ribosomal protein S23 L35 copy number

Effectiveness analysis of the prediction of regional debris flow susceptibility in post-earthquake and drought site

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Journal of Mountain Science 2020年第2期17卷 329-339页

作者： CHEN Ning-sheng ZHANG Yong TIAN Shu-feng DENG Ming-feng WANG Tao liu li-hong liu Mei HU Gui-sheng Key of Mountain Hazards and Surface Process Institute of Mountain Hazards and EnvironmentChinese Academy of SciencesChengdu 610041China University of Chinese Academy of Sciences Beijing 100049China

Debris-flow disasters occurred frequently after the Mw 8.0 Wenchuan earthquake on 12 May 2008 in Sichuan Province, China. Based on historical accounts of debris-flow disaster events, it found that debris flow occurrence is closely related to the impact of earthquakes and droughts, because earthquakedrought activities can increase the loose solid materials, which can transform into debris flows under the effect of rainstorms. Based on the analysis of historical earthquake activity(frequency, magnitude and location), drought indexes and the trend of climate change(amount of rainfall), a prediction method was established, and the regional debris flow susceptibility was predicted. Furthermore, in a debris flow-susceptible site, effective warning and monitoring are essential not only from an economicpoint of view but are also considered as a frontline approach to alleviate hazards. The advantages of the prediction and early monitoring include(1) the acquired results being sent to the central government for policy making;(2) lives and property in mountainous areas can be protected, such as the 570 residents in the Aizi valley, who evacuated successfully before debris flows in 2012;(3) guiding the government to identify the areas of disasters and the preparation for disaster prevention and mitigation, such as predicting disasters in high-risk areas in the period 2012-2017, helping the government to recognize the development trend of disasters;(4) the quantitative prediction of regional debris-flow susceptibility, such as after the Wenchuan earthquake, can promote scientific and sustainable development and socioeconomic planning in earthquake-struck areas.

关键词： Regional debris flow Susceptibility Prediction model Wenchuan earthquake Drought Southwest China

Anatomical retroperitoneoscopic retroperitoneal lymph node dissection for clinical stage I nonseminomatous germ cell tumors： initial operative experience

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Asian Journal of Andrology 2014年第1期16卷 136-139页

作者： Kai Yao Zai-Shang li Fang-Jian Zhou Zi-Ke Qin Zhuo-Wei liu Yong-hong li Hui Han Department of Urology Cancer Center Sun Yat-Sen University State Key Laboratory of Oncology in South China Collaborative Innovation Center of Cancer Medicine Guangzhou China.

To introduce the technique of anatomical retroperitoneoscopic retroperitoneal lymph node dissection （ARRPLND） was performed in 12 consecutive patients with a clinical stage I nonseminomatous germ-cell tumor （NSGCT） between February 2008 and October 2010. All procedures were performed using a modified template nerve-sparing approach. The retroperitoneal space was adequately expanded using double gasbags. After the retroperitoneal fat was cleared, two relatively bloodless planes were entered consecutively to expose the lymph node and permit dissection. Dissection proceeded first in the plane between the anterior renal fascia and posterior peritoneum, and secondly in the avascular plane between the posterior renal fascia and transversalis fascia. The proximal spermatic vein was clipped at the initial stage. En bloc resection of the lymph tissue and fat between the anterior renal fascia and posterior renal fascia were performed. Three patients （25%） had pathologic stage IIA disease and received adjuvant chemotherapy. No recurrence was observed during follow-up ranging from 26 to 58months. The median operative time was 205min （range： 165-430min） and median estimated blood loss was 320ml （range： 100-1200ml）. There were two intraoperative complications （Clavien grade II） and one open conversion due to perforation of the peritoneum. Postoperative complications （Clavien I） developed in three patients. Normal antegrade ejaculation recovered by 1 month following the operation. Our preliminary results indicate that ARRPLND is technically feasible and associated with satisfactory clinical outcomes for clinical stage I NSGCT. Further studies are necessary to evaluate this technique.

关键词： nonseminomatous retroperitoneoscopic retroperitoneal lymph node testicular cancer