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| 1 | Ambient volatile organic compounds at a receptor site in the Pearl River Delta region:Variations,source apportionment and effects on ozone formation显示文摘We present the continuously measurements of volatile organic compounds(VOCs)at a receptor site(Wan Qing Sha,WQS)in the Pearl River Delta(PRD)region from September to November of 2017.The average mixing ratios of total VOCs(TVOCs)was 36.3±27.9 ppbv with the dominant contribution from alkanes(55.5%),followed by aromatics(33.3%).The diurnal variation of TVOCs showed a strong photochemical consumption during daytime,resulting in the formation of ozone(O_(3)).Five VOC sources were resolved by the positive matrix factorization(PMF)model,including solvent usage(28.6%),liquid petroleum gas(LPG)usage(24.4%),vehicle exhaust(21.0%),industrial emissions(13.2%)and gasoline evaporation(12.9%).The regional transport air masses from the upwind cities of south China can result in the elevated concentrations of TVOCs.Low ratios of TVOCs/NO_(x)(1.53±0.88)suggested that the O_(3) formation regime at WQS site was VOC-limited,which also confirmed by a photochemical box model with the master chemical mechanism(PBM-MCM).Furthermore,the observation on high-O_(3) episode days revealed that frequent O_(3) outbreaks at WQS were mainly caused by the regional transport of anthropogenic VOCs especially for aromatics and the subsequent photochemical reactions.This study provides valuable information for policymakers to propose the effective control strategies on photochemical pollution in a regional perspective. | Yao Meng Junwei Song Lewei Zeng Yingyi Zhang Yan Zhao Xufei Liu Hai Guo Liuju Zhong Yubo Ou Yan Zhou Tao Zhang Dingli Yue Senchao Lai | 2022 | Journal of Environmental Sciences2022，34，1： | 5 |
| 2 | 口腔黏膜早期不典型性增生等位基因缺失的检测显示文摘目的 探索用等位基因缺失检测的方法预测口腔黏膜早期不典型性增生病变的癌变。方法 用组织显微切割法提取组织并获得DNA ,以聚合酶链反应和多态性微卫星标记物分析检测等位基因缺失。 2 1个微卫星标记物对 8条染色体臂 ( 3p、4 q、8p、9p、11q、13q、14q和 17p)进行了检测。比较轻度和中度不典型性增生 ( 5 5例 )与高危不典型性增生 (重度不典型性增生和原位癌 2 3例 ;与癌组织同时存在的轻度和中度不典型增生 4 8例 )的等位基因缺失情况。增生病变 ( 34例 )和癌组织 ( 34例 )为对照。结果 等位基因缺失发生率随着病变恶性程度的增高而增高 ;增生病变仅见单个等位基因缺失 ,而不典型增生和癌组织可见多个等位基因缺失 ;轻度和中度不典型增生标本中 3个或 3个以上臂的等位基因缺失少见 ,而重度不典型增生、原位癌和癌组织 3个或 3个以上臂的等位基因缺失多见 ;轻度和中度不典型增生的等位基因缺失多发生在 3p、9p和 14 q ,而高危不典型增生的等位基因缺失可发生在除此以外的 4 q、8p、11q、13q、17p染色体臂上。 结论 早期的不典型增生没有等位基因缺失时癌变危险可能较小 ,而出现多于 3个或 3个以上臂 ,特别是在 8p、11q、13q和 17p上的等位基因缺失 。 | 王琪 Lewei Zhang Miriam P.Rosin | 2003 | 中华耳鼻咽喉科杂志2003，38，5： | 2 |
| 3 | Diagenetic fluids evolution of Oligocene Huagang Formation sandstone reservoir in the south of Xihu Sag, the East China Sea Shelf Basin: constraints from petrology, mineralogy,and isotope geochemistry显示文摘The Oligocene Huagang Formation is the main sandstone reservoir in the Xihu Sag, situated in the east of the East China Sea Shelf Basin. With an integrated approach of thin-section petrography, ultra-violet fluorescence microscopy, scanning electron microscopy, and isotope geochemistry, the different diagenetic features were identified, the typical diagenetic parasequences were established, and the diagenetic fluids evolution history were reconstructed for the Oligocene Huagang Formation sandstone reservoir in the south of Xihu Sag. The Huagang Formation sandstone reservoir is now in Period B of the mesodiagenesis, which has undergone significant diagenetic alterations such as mechanical compaction, Pore-lining chlorite cement, feldspar dissolution, quartz cementation and dissolution, and carbonate cementation. Three types of carbonate cements(early siderite,medium ferrocalcite and late ankerite) were identified in the Huagang Formation sandstone reservoir. The carbon and oxygen isotopic compositions of carbonate cements show that the early calcite precipitate from alkaline lacustrine environment whereas the late carbonate cements were closely related to the organic acids. To the Huagang Formation sandstone reservoir, it has experienced two main episodes of dissolution during diagenesis.The early dissolution is that unstable components such as feldspar, lithic fragments, and carbonate cement were dissolved by acidic water. The second dissolution is that quartz and other silicate minerals were dissolved under the alkaline condition. Two main phases of hydrocarbon charging occurred in this study area. The first hydrocarbon emplacement was prior to the medium carbonate cementation but posterior to feldspar dissolution and the onset of quartz cementation at the end of the Miocene. The second hydrocarbon charging occurred in the Quaternary period after the late carbonate precipitation. | HAO Lewei WANG Qi GUO Ruiliang TUO Chengrong MA Dongxu MOU Weiwei TIAN Bing | 2018 | Acta Oceanologica Sinica2018，37，2： | 2 |
| 4 | Study on grid connected inverter used in high power wind generation system 显示文摘 | QIANG Z LEWEI Q DAVID C | 2006 | IEEE Industry Applications Society Annual 2006 Conference2006，，： | 1 |
| 5 | Interaction of electromagnetic waves with 3-D arbitrarily shaped homogeneous chiral targets in the presence of a lossy half space 显示文摘 | Wang Xiande Werner Douglas H Li Lewei Gau Yeow-Beng | 2007 | IEEE Trans Antennas Propagat2007，55，12： | 1 |
| 6 | Comparison between a cast steel joint and a welded circular hollow section joint显示文摘 | Tong Lewei Zheng Hongzhi Chen Yiyi | 2006 | Welding in the World2006，，： | 1 |
| 7 | Effect of plum-blossom needling versus tropicamide eye drops on adolescent myopia: protocol for a randomized crossover trial显示文摘OBJECTIVE: Myopia is the most common eye problem and affects an estimated 28.3% of the global population. Its incidence is increasing annually. Myopia treatment is limited to correcting visual acuity.Acupuncture is one of the main therapies in traditional Chinese medicine and includes plum-blossom needling, which has been widely used forboth the prevention and treatment of adolescent myopia. We hypothesized that plum-blossom needling would be effective in treating myopia compared with a tropicamide eye drops control.METHODS: This is a crossover randomized controlled trial involving adolescents with myopia. Participants will be randomized 1∶1 to plum-blossom needle or tropicamide eye drops arms. Subjects in each arm will be treated for 20 d, followed by a 1-month washout period and treatment change for another 20 d. The primary outcome is uncorrected distance and cycloplegic refractive errors. The secondary outcomes comprise corneal curvature, lens thickness, axial length, ciliary body thickness, accommodation amplitude, the NRA/PRA(negative/positive relative accommodation), flexible adjustment, and near point of convergence. The outcome measures will be assessed at baseline, after the first treatment course(the first month), at the end of the washout period(the second month), after the second treatment course(the third month), and at follow-up(the sixth month).DISCUSSION: The results of the trial will help to provide evidence for the efficacy of plum-blossom needling for myopia in China. | Chen Liang Liang Yuanbo Xu Meiping Zheng Jingwei Yu Huanyun Tang Lewei | 2020 | Journal of Traditional Chinese Medicine2020，40，2： | 1 |
| 8 | A Broadband and High-gain Metamaterial Microstrip Antenna显示文摘 | Li Lewei Li Ya'nan Yeo T S | 2010 | Applied Physics Letters2010，96，16： | 1 |
| 9 | Gelatmase activity and the occurrence of cerebral aneurysms 显示文摘 | Chyatte D leweis I | 1997 | Stroke1997，28，4： | 1 |
| 10 | A method for designing broad-band microstrip antennas in multilayered planar structures显示文摘 | LIU Zhangfa KOOI P S LI Lewei | 1999 | IEEE Trans on Ant and Prop1999，47，9： | 1 |
| 11 | Wide-band microstrip antenna with an H-shaped coupling aperture 显示文摘 | Gao Shichang Li Lewei | 2002 | IEEE Transac- tions on Vehicular Technology2002，51，1： | 1 |
| 12 | Fast analysis of RCS over a frequency band using pre-correc ted FFT/AIM and asymptotic waveform evaluation technique 显示文摘 | NIE Xiaochun YUAN Ning LI Lewei | 2008 | IEEE Transactions on Antennas and Propagation2008，56，35： | 1 |
| 13 | A tetrad effect in the liquid-liquid extraction ordering of lanthanides (III) 显示文摘 | Peppard D F Mason G W Lewey S | 1969 | Journal of Inor-ganic and Nuclear Chemistry1969，31，7： | 1 |
| 14 | Chronic kidney disease as a glob-al public health problem:approaches and initiatives-a position state-ment from Kidney Disease Improving Global Outcomes显示文摘 | Lewey AS Atkins R Coresh J | 2007 | KidneyInt2007，72，3： | 1 |
| 15 | Light in- duced vegetative anthocyanin pigmentation in Petunia显示文摘 | ALBERT N W LEWEIS D H ZHANG H etal | 2009 | Jour- nal of Expermiental Botany2009，60，7： | 1 |
| 16 | Analysis of electromagnetic scattering by a plasma anisotropic sphere显示文摘 | GENG Youlin WU Xinbao and LI Lewei | 2003 | Radio Science2003，38，6： | 1 |
| 17 | Characterization of electromagnetic scattering by a plasma anisotropic spherical shell显示文摘 | GENG Youlin WU Xinbao LI Lewei | 2004 | IEEE Antennas and Wireless Propagation Letters2004，3，6： | 1 |
| 18 | A tetrad effect in liquid-liquid extraction ordering of lanthanides( Ⅲ ) 显示文摘 | Peppard D F Mason G Lewey S | 1969 | J Inorg Nucl Chem1969，31，7： | 1 |
| 19 | Electromagnetic scattering by an inhomogeneous plasma anisotropic sphere of multilayers显示文摘 | GENG Youlin WU Xinbao LI Lewei | 2005 | IEEE Transactions on Antennas and Propagation2005，53，12： | 1 |
| 20 | A fast analysis of electromagnetic scattering by arbitrarily shaped homogeneous dielectric objects 显示文摘 | Nie Xiao Chun Li Lewei Yuan Ning | 2003 | Microwave and Optical Technology Letters2003，38，1： | 1 |
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