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Annual Time-series Analy.es of Total Gaseous Mercury.Measurement and its Impact Factors on the Gongga Mountains in the Southeastern Fringe of the Qinghai-Tibetan Plateau

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Journal of Mountain Science 2008年第1期5卷 17-31页

作者： ZHU Wanze FU Xuewu FENG Xinbin Julia y. lu Institute of Mountain Hazard and Environment Chinese Academy of Sciences Chengdu 610041 China State Key.Laboratory.of Environmental Geochemistry Institute of Geochemistry Chinese Academy of Sciences Guiyang 550002 China Department of Chemistry.and Biology Ryerson University Toronto Ontario M5B 2K3 Canada

Long-term monitoring programs for measurement of atmospheric mercury.concentrations are presently.recognized as powerful tools for local,regional and global studies of atmospheric long-range transport processes,and they.could also provide valuable information about the impact of emission controls on the global budget of atmospheric mercury.their observance and an insight into the global mercury.cy.le. China is believed to be an increasing atmospheric mercury.emission source. However,only.a few measurements of mercury.to our knowledge,have been done in ambient air over China. The highly.time resolved atmospheric mercury.concen-trations have been measured at Moxi Base Station (102°72′E 29°92′N,1640 m asl) of the Gongga Alpine Ecosy.tem Observation and Experiment Station of Chinese Academy.of Sciences (CAS) from May.2005 to June 2006 by.using a set of Automatic Atmospheric Mercury.Speciation Analy.ers (Tekran 2537A). Measurements were carried out with a time resolution of every.15 minutes. The overall average total gaseous mercury.(TGM) covering the measurement periods was 4±1.38 ng·m-3 (N=57310),which is higher than the global background level of approximately.1.5～2.0 ng·m-3. The measurements in all seasons showed a similar diurnal change pattern with a high concentration during day.ime relative to nighttime and maximum concentration near solar noon and minimum concentration immediately.before sunrise. The presence of diurnal TGM peaks during spring and summer was found earlier than that during autumn and winter. When divided seasonally.it was found that the concentrations of TGM were highest in winter with 6.13 ± 1.78 ng·m-3 and lowest in summer with 3.17 ± 0.67 ng·m-3. There were no significant differences in TGM among wind sectors during each season. Whereas Hg generally.exhibited significant correlations with the parameters,such as temperature,saturated vapor pressure,precipitation,ultraviolet radiation (UV) and atmospheric pressure at the whole measurement stage,

关键词： Total gaseous mercury.(TGM) diurnal variability seasonal variability meteorological factor Gongga Mountains

Laser Assisted Fabrication for Controlled Single-Walled Carbon Nanotube Sy.thesis and Processing(Invited Paper)

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中国激光 2009年第12期36卷 3125-3132页

作者： W. Xiong y. Gao M. Mahjouri-Samani y. S. Zhou M. Mitchell J. B. Park y. F. lu Department of Electrical Engineering University of Nebraska-Lincoln

Although significant progress has been made in large scale and high quality.single-walled carbon nanotube(SWNT) sy.thesis,the fabrication of SWNT-based functional devices still faces many.challenges due to the lack of good methods to precisely.control over SWNTs growth location,orientation,alignment,and electronic ***,development of practical methods for well-controlled SWNT-based device fabrication has drawn great interests from both academics and *** to numerous advantages,laser-based techniques are applied in controlled fabrication of SWNT *** this paper,we first introduce the laser assisted chemical vapor deposition(LCVD) process,and then different aspects of controllability.in device fabrication are described in three sections: 1) location and orientation control of SWNT channels integration using optical near-field effects;2) alignment control of SWNTs array. using electrical biasing polarities;3) SWNTs electronic property.control using laser-induced breakdown *** experimental results show that well-organized individual SWNT channels or array. with location,orientation,alignment,and electronic property.control can be achieved through laser assisted fabrication process,which is a promising solution for the fabrication of future SWNT-based devices.

关键词：碳纳米管纳米材料光学技术生长位置

A FURTHER INVESTIGATION ON THE PARAMETERS OF THE VDW Ty.E EQUATION OF STATE

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Chinese Journal of Chemical Engineering 1996年第2期4卷 92-97页

作者：董军航徐南平王延儒时钧 Benjamin C.-y. lu Department of Chemical Engineering University of Ottawa Ontario KIN 6N5 Canada

1 INTRODUCTIONSince the day. when Soave [1] and Peng and Robinson [2] disclosed their modifiedvan der Waals(vdW)equations of state(EOS),a large number of papers on the samesubject have been *** vdW ty.e EOS are similar in structure,as they.are de-rived from a generalized equation [3].Therefore,studies on vdW EOS are essentially.fo-cused on the searching of the most rational parameters and the most appropriaterepresentation of these *** a lot of efforts were paid on this subject

关键词： EOS parameter characteristic factor generalization

青藏高原东南缘贡嘎山地区大气总汞时间序列分析及其影响因子

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生态学报 2007年第9期27卷 3727-3737页

作者：朱万泽付学吾冯新斌 Julia y. lu 中国科学院成都山地灾害与环境研究所成都610041 中国科学院地球化学研究所环境地球化学国家重点实验室贵阳550002 Department of Chemistry.and Biology Ryerson UniversityToronto OntarioCanada

使用Tekran 2537A大气汞自动分析仪对中国科学院贡嘎山高山生态系统观测试验站磨西基地站（102°72＇＇E 29°92＇＇N）进行了为期1a的大气总汞（TGM）高时间分辨率观测.研究区域的平均TGM浓度为（4±1.38） ng m-3（N=57310）,高于全... 详细信息

使用Tekran 2537A大气汞自动分析仪对中国科学院贡嘎山高山生态系统观测试验站磨西基地站（102°72＇＇E 29°92＇＇N）进行了为期1a的大气总汞（TGM）高时间分辨率观测.研究区域的平均TGM浓度为（4±1.38） ng m-3（N=57310）,高于全球大气总汞背景值1.5～2.0 ng m-3.不同季节表现出相似的日变化模式,即白天相对夜晚具有较高的TGM浓度,最大TGM浓度出现在中午,最小值出现在日出前,春季和夏季日变化高峰值出现时间比秋季和冬季早1～2h.以冬季TGM浓度最高,为（6.13±1.78） ng m-3;夏季最低,为（3.17±0.67） ng m-3.观测期间不同风向间TGM浓度无显著差异.相关分析表明,TGM浓度与温度、饱和水汽压、降水量、紫外辐射、大气压有显著相关性,这种相关性随季节而变化.贡嘎山地区大气汞浓度主要受局地源的影响和调节.

关键词：大气总汞日变化季节变化气象因子贡嘎山

Antioxidant Activity.Determination of Citronellal and Crude Extracts of <i>Cy.bopogon citratus</i>by.3 Different Methods

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Pharmacology.& Pharmacy 2014年第4期5卷 395-400页

作者： y. lu T. J. Khoo C. Wiart School of Pharmacy Faculty of Science University of Nottingham Malaysia Campus Semenyih Selongar Malaysia

Cy.bopogon citratus, better known as lemongrass, is a plant commonly.used for culinary.purposes. It is known to contain the compound citronellal, which is responsible for the lemon-scent of many.of the plants of the genus Cy.bopogon. A chloroform extract of Cy.bopogon citratus was screened to determine its free radical scavenging activities. Three different methods were used to test the antioxidant activity.of the extract, including FRAP assay.(Ferric reducing antioxidant potential), DPPH radical scavenging assay.(1,1-dipheny.-2-picry. hy.razy. radical reducing power methods), and β-carotene bleaching assay. Cy.bopogon citratus showed low radical scavenging activities compared to ascorbic acid, gallic acid and quercetin. The results obtained suggest that Cy.bopogon citratus is best appreciated for its refreshing aroma and delicate taste, but has little to offer as a source of antioxidants.

关键词： Antioxidant Activity DPPH Assay FRAP Assay β-Carotene Bleaching Assay Citronellal

Sy.THESIS OF NEW OPEN FRAMEWORK POLy.ERIC MATERIALS

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SYNTHESIS OF NEW OPEN FRAMEWORK POLYMERIC MATERIALS

Critical Amino Acid Residues for Nicotine 5'-Hy.roxy.ation in Human Cy.2A Enzy.es

40th IUPAC Congress

作者： Jack y. lu Amy.M. Babb Larry.Chen Department of Chemistry University of Houston-Clear Lake Department of Chemistry University of Houston-Clear Lake Department of Chemistry University of Houston-Clear Lake

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Journal of Nanjing Medical University 2008年第6期22卷 338-345页

作者： Xiaoy.ng Hea Xu Xu Jian Shen Li Sun Anthony.y. H. lu Clifford Weisel Juny.n Hong College of Life Sciences Shenzhen University Shenzhen 518060 Guangdong Province China Environmental Biomarker Shared Resource The Cancer Institute of New Jersey/Environmental and Occupational Health Sciences Institute NJ 08854 USA Aventis Pharmaceuticals NJ 08807 USA Department of Histology.& Embry.logy Guilin Medical College Guilin 541004Guangxi Province China College of Pharmacy Rutgers University NJ 088544 USA School of Public Health/EOHSl University of Medicine and Dentistry of New Jersey NJ 08854 USA

Objective： We have continued previous work in which we demonstrated that #117 and #372 amino acids contributed to the high activities of human Cy.2A13 in cataly.ing 4-methy.nitrosamino-1-（3-py.idy.）-1-butanone（NNK） and aflatoxin BI（AFB1） carcinogenic activation. The present study.was designed to identify.other potential amino acid residues that contribute to the different cataly.ic characteristics of two Cy.2A enzy.es, Cy.2A6 and Cy.2A13, in nicotine metabolism and provide insights of the substrate and related amino acid residues interactions. Methods： A series of reciprocally.substituted mutants of Cy.2A6lle^300→ Phe, Cy.2A6Gly.301aAla, Cy.2A6Ser^369 → Gly. Cy.2A13Phe^300→ Ile, Cy.2A13Ala^301 → Gly.and Cy.2A13Gly.369 → Set were generated by.site-directed mutagenesis/baculovirus-Sf9 insect cells expression. Comparative kinetic analy.is of nicotine 5＇hy.roxy.atin by.wild ty.e and mutant Cy.2A proteins was performed. Results：All amino acid residue substitutions at 300, 301 and 369 caused significant kinetic property.changes in nicotine metabolism. While Cy.2A6Ile^300→ Phe and Cy.2A6Gly.301→Ala mutations had notable cataly.ic efficiency.increases compared to that for the wild ty.e Cy.2A6, Cy.2A13Phe^300→Ile and Cy.2A13Ala^301→Gly.replacement introduced remarkable cataly.ic efficiency.decreases. In addition, all these cataly.ic efficiency.alterations were caused by.Vmax variations rather than Km changes. Substitution of #369 residue significantly.affected both Km and Vmax values. Cy.2A6Ser^369 → Gly.increase the cataly.ic efficiency.via a significant Km decrease versus Vmax enhancement, while the opposite effects were seen with Cy.2A13Gly.369 → Ser. Conclusion：#300, #301 and #369 residues in human Cy.2A6/13 play.important roles in nicotine 5＇ -oxidation. Switching #300 or #301 residues did not affect the Cy.2A protein affinities toward nicotine, although these amino acids are located in the active center. Set369 to Gly.substitution indirectly.affected nicotine binding b

关键词： Cy.2A6 Cy.2A13 nicotine 5'-hy.roxy.ation site-directed mutagenesis crucial amino acid residue

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具振荡边界的圆柱壳的动力稳定性

天津大学学报 1988年第1期 1-8页

作者：潘永皓路松筠天津大学美国佛罗里达大学

当一个壳体结构被安装到具有振动的结构物或基础时,由于必须满足位栘连续条件,因此壳体的边界运动引起了壳体本身的变形,当由此而产生的应力足够大时,壳体就会失去稳定。文献[1]证实了纵向相对于横向的边界振动对壳体的影响要明显得多... 详细信息

当一个壳体结构被安装到具有振动的结构物或基础时,由于必须满足位栘连续条件,因此壳体的边界运动引起了壳体本身的变形,当由此而产生的应力足够大时,壳体就会失去稳定。文献[1]证实了纵向相对于横向的边界振动对壳体的影响要明显得多。在本文里研究了具有纵向振动的边界条件下圆柱壳体的稳定性问题,本研究应用了Donnell方程及Galerkin方法。研究结果表明壳体的稳定与否取决于边界振荡的振幅与频率,以及与壳体的几何尺度和位移型式有关。本文最后提供了一个具体数值实例。

关键词：圆柱壳动力稳定性振荡边界

Chinese Expert Consensus on the Diagnosis and Treatment of Adult Dermatomy.sitis (2022)#

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International Journal of Dermatology.and Venereology 2024年第3期7卷 163-173页

作者： Cao H. Chen A.-J. Cui y. Deng D.-Q. Gao X.-H. He y.-L. Kang X.-J. Jin H.-Z. Li C.-X. Li F. Li H.-J. Liao W.-J. Liu X.-M. lu Q.-J. lu y. Pan M. Pan W.-H. Shu X.-M. Sun Q. Tang K.-y. Tao J. Wang y. Xiao T. Zhang F.-R. Zhang H.-L. Department of Dermatology Ruijin Hospital Affiliated Shanghai Jiao Tong University School of Medicine Shanghai 200025 China Department of Dermatology First Affiliated Hospital of Chongqing Medical University Chongqing 400042 China Department of Dermatology China-Japan Friendship Hospital Beijing 100029 China Department of Dermatology The Second Affiliated Hospital of Kunming Medical University Yunnan Kunming 650101 China Department of Dermatology The First Hospital of China Medical University Liaoning Shenyang 110001 China Department of Dermatology Beijing Chaoyang Hospital Affiliated to Capital Medical University Beijing 100020 China Department of Dermatology.and Venereology People's Hospital of Xinjiang Uygur Autonomous Region Xinjiang Uygur Autonomous Region Urumqi 830001 China Department of Dermatology State Key Laboratory of Complex Severe and Rare Diseases Peking Union Medical College Hospital Chinese Academy of Medical Science Peking Union Medical College Beijing 100730 China Department of Dermatology First Medical Center PLA General Hospital Beijing 100853 China Department of Dermatology Hainan Hospital of PLA General Hospital Hainan Sanya 572013 China Department of Dermatology Xijing Hospital Air Force Medical University Shaanxi Xi'an 710032 China Department of Dermatology Huazhong University of Science and Technology Union Shenzhen Hospital Guangdong Shenzhen 518052 China Hospital for Skin Diseases Institute of Dermatology Chinese Academy of Medical Sciences Peking Union Medical College Jiangsu Nanjing 210042 China Department of Dermatology Jiangsu Province Hospital The First Affiliated Hospital Nanjing Medical University Jiangsu Nanjing 210029 China Department of Dermatology Shanghai Changzheng Hospital Second Affiliated Hospital of Naval Medical University Shanghai 200003 China Department of Rheumatology China-Japan Friendship Hospital Beijing 100029 China Department of Dermatology Qilu Hospital of Shandong Universit

Dermatomy.sitis, an idiopathic inflammatory.my.pathy. is characterized by.distinctive skin manifestations, proximal muscle weakness, and multiple organ involvement and can be accompanied by.malignancies. To provide a reference for dermatologists and clinicians in other relevant fields of clinical practice, experts from the Dermatology.Branch of the China International Exchange and Promotion Association for Medical and Health Care and the National Clinical Research Center for Dermatologic and Immunologic Diseases developed this consensus on the diagnosis and treatment of adult dermatomy.sitis using Chinese and international literature and expert advice. © 2024 Wolters Kluwer Health. All rights reserved.

关键词： adult clinical protocols dermatomy.sitis diagnosis expert consensus treatment