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| 1 | Analysis of pesticide residues in commercially available chenpi using a modified QuEChERS method and GC-MS/MS determination显示文摘To ensure the safety of the commercially available chenpi,a convenient and fast analytical method was developed for the determination of 133 pesticide residues in chenpi using gas chromatography-tandem mass spectrometry(GC-MS/MS).In this study,different extraction solvents,redissolution solvents and adsorbents were tested according to the recovery and purification effect to obtain a modified QuEChERS method.The samples were extracted with acetonitrile.During the clean-up step,octadecyl-modified silica(C18)and graphitized carbon black(GCB)were selected,and aminopropyl(NH2)was used instead of primary secondary amine(PSA)because of its weaker ion exchange capacity which had little effect on the recovery of ditalimfos.Samples were quantified by matrix-matched calibration with internal standards.All pesticides showed good linearity in the respective range,both with values of r2>0.99.The average recoveries of the pesticides spiked samples ranged from 70.0% to 112.2% with the RSDs of 0.2%–14.4%.The modified QuEChERS method was validated and applied to twenty real samples.Five pesticides were found in eight batches,but no pesticide exceeded the maximum residue limits(MRL,MRL reference to European commission). | Shuang Li Peipei Yu Ceng Zhou Ling Tong Dongxiang Li Zhiguo Yu Yunli Zhao | 2020 | Journal of Pharmaceutical Analysis2020，10，1： | 34 |
| 2 | Track-before-detect for Infrared Maneuvering Dim Multi-target via MM-PHD显示文摘In this paper, we present a novel and efficient track-before-detect (TBD) algorithm based on multiple-model probability hypothesis density (MM-PHD) for tracking infrared maneuvering dim multi-target. Firstly, the standard sequential Monte Carlo probability hypothesis density (SMC-PHD) TBD-based algorithm is introduced and sequentially improved by the adaptive process noise and the importance re-sampling on particle likelihood, which result in the improvement in the algorithm robustness and convergence speed. Secondly, backward recursion of SMC-PHD is derived in order to ameliorate the tracking performance especially at the time of the multi-target arising. Finally, SMC-PHD is extended with multiple-model to track maneuvering dim multi-target. Extensive experiments have proved the efficiency of the presented algorithm in tracking infrared maneuvering dim multi-target, which produces better performance in track detection and tracking than other TBD-based algorithms including SMC-PHD, multiple-model particle filter (MM-PF), histogram probability multi-hypothesis tracking (H-PMHT) and Viterbi-like. | LONG Yunli XU Hui AN Wei LIU Li | 2012 | Chinese Journal of Aeronautics2012，25，2： | 17 |
| 3 | Effect of minor Sc addition on microstructure and stress corrosion cracking behavior of medium strength Al–Zn–Mg alloy显示文摘Influence of Sc content on microstructure and stress corrosion cracking behavior of medium strength Al–Zn–Mg alloy have been investigated by optical microscopy, scanning electron microscopy, electron backscatter diffraction, transmission electron microscopy and slow strain rate test. The results indicate that the addition of Sc results in the formation of the quaternary coherent Al_3(Sc, Zr, Ti) dispersoids during homogenization treatment, which will inhibit the dynamic recrystallization behavior. The number density of Al_3(Sc, Zr, Ti) particles increases with the increase of Sc content, and thus the recrystallization fraction of hot-extruded alloy is reduced and the peak strength in two-stage artificial aging sample is enhanced. At the same time, the wide of precipitation free zone is reduced, and the content of Zn and Mg in grain boundary particles and precipitation free zone is increased with the increase of Sc content. In peak-aged state, the 0.06 wt% Sc added alloy shows the better stress corrosion cracking resistance than the Sc-free alloy because of the reduction of recrystallization fraction and the interrupted distribution of grain boundary precipitates along grain boundary. However, the further addition of Sc to 0.11 wt% will result in the deterioration of stress corrosion cracking resistance due to the increase of electrochemical activity of grain boundary particles and precipitation free zone as well as hydrogen embrittlement. | Zhaoming Li Haichang Jiang Yunli Wang Duo Zhang Desheng Yan Lijian Rong | 2018 | Journal of Materials Science & Technology2018，34，7： | 14 |
| 4 | miR-210 over-expression enhances mesenchymal stem cell survival in an oxidative stress environment through antioxidation and c-Met pathway activation显示文摘microRNA-210(miR-210)has generally been reported to be associated with cell survival under hypoxia.However,there are few data regarding the role of miR-210 in the survival of mesenchymal stem cells(MSCs)under oxidative stress conditions.Thus,we sought to investigate whether miR-210 over-expression could protect MSCs against oxidative stress injury and what the primary mechanisms involved are.The results showed that over-expression of miR-210 significantly reduced the apoptosis of MSCs under oxidative stress,accompanied by obvious increases in cell viability and superoxide dismutase activity and remarkable decreases in malonaldehyde content and reactive oxygen species production,resulting in a noticeable reduction of apoptotic indices when compared with the control.Moreover,the above beneficial effects of miR-210 could be significantly reduced by c-Met pathway repression.Collectively,these results showed that miR-210 over-expression improved MSC survival under oxidative stress through antioxidation and c-Met pathway activation,indicating the potential development of a novel approach to enhance the efficacy of MSC-based therapy for injured myocardium. | XU JianFeng HUANG ZheYong LIN Li FU MingQiang GAO YanHua SHEN YunLi ZOU YunZeng SUN AiJun QIAN JuYing GE JunBo | 2014 | Science China(Life Sciences)2014，57，10： | 10 |
| 5 | A sequence of 28S rRNA-derived small RNAs is enriched in mature sperm and various somatic tissues and possibly associates with inflammation显示文摘 | Chu, Chen Yu, Lu Wu, Bin Ma, Li Gou, Lan-Tao He, Miao Guo, Yunli Li, Zhi-Tong Gao, Wei Shi, Huijuan Liu, Mo-Fang Wang, Hongyan Chen, Charlie Degui Drevet, Joel R. Zhou, Yuchuan Zhang, Yonglian | 2017 | Journal of Molecular Cell Biology2017，9，3： | 6 |
| 6 | Metabonomic analysis of plasma biochemical changes in pyrexia rats after treatment with Gegenqinlian decoction,aspirin and itraconazole by UHPLC-FT-ICR-MS显示文摘A metabonomic approach involving an ultrahigh-performance liquid chromatography combined with Fourier transform ion cyclotron resonance mass spectrometry(UHPLC-FT-ICR-MS)was used to investigate the changes in the endogenous metabolites in the plasma of rats with yeast-induced pyrexia treated with Gegenqinlian decoction(GQLD),aspirin and itraconazole.The differences in the small molecule profiles of treatment using traditional Chinese medicine,etiological treatment and symptomatic treatment were elucidated.Thirty-six plasma metabolites were identified or putatively identified,and the effects of the three medicines on the thirty-six metabolites were studied.Their metabolic pathways indicated that GQLD,aspirin and itraconazole ameliorated the rats with yeast-induced pyrexia predominantly by regulating the metabolisms of phospholipid,sphingolipid,fatty acid oxidation,fatty acid amides,amino acid and glycerolipid in vivo.The pharmacodynamics and metabonomic results showed that the three medicines exhibited the therapeutic effects on pyrexia by regulating the perturbations of multiple metabolisms.The study provided a scientific basis for an in-depth understanding of the therapeutic effects of GQLD,aspirin and itraconazole on rats with yeast-induced pyrexia. | Ting Liu Ruiyun Li Yue Cui Zhiguo Yu Yunli Zhao | 2020 | Journal of Pharmaceutical Analysis2020，10，6： | 6 |
| 7 | Selective electrochemical production of hydrogen peroxide at zigzag edges of exfoliated molybdenum telluride nanoflakes显示文摘The two-electron reduction of molecular oxygen represents an effective strategy to enable the green,mild and on-demand synthesis of hydrogen peroxide.Its practical viability,however,hinges on the development of advanced electrocatalysts,preferably composed of non-precious elements,to selectively expedite this reaction,particularly in acidic medium.Our study here introduces 2H-MoTe2 for the first time as the efficient non-precious-metal-based electrocatalyst for the electrochemical production ofhydrogen peroxide in acids.We show that exfoliated 2H-MoTe2 nanoflakes have high activity(onset overpotential〜140 mV and large mass activity of 27 A g^-1 at 0.4 V versus reversible hydrogen electrode),great selectivity(H2O2 percentage up to 93%)and decent stability in 0.5 M H2SO4.Theoretical simulations evidence that the high activity and selectivity of 2H-MoTe2 arise from the proper binding energies of HOO*and O*at its zigzag edges that jointly favor the two-electron reduction instead of the four-electron reduction of molecular oxygen. | Xuan Zhao Yu Wang Yunli Da Xinxia Wang Tingting Wang Mingquan Xu Xiaoyun He Wu Zhou Yafei Li Jonathan NColeman Yanguang Li | 2020 | National Science Review2020，7，8： | 3 |
| 8 | Quantitative climatic reconstruction of the Last Glacial Maximum in China显示文摘Quantitative paleoclimatic reconstruction is crucial for understanding the operation and evolution of the global climate system.For example,a quantitative paleoclimatic reconstruction for the Last Glacial Maximum(18±2 ka14C,LGM)is fundamental to understanding the evolution of Earth’s climate during the last glacial-interglacial cycle.Previous quantitative palaeoclimate reconstructions in China are generally based on statistical comparison of modern pollen assemblages and modern climate data.These methods are based on the premise that vegetation-climate interactions remain the same through time,and implicitly assume that the interactions are independent of changes in seasonality and atmospheric CO2concentration.However,these assumptions may not always be valid,which may affect the reconstructions.Here,we present the results of a quantitative study of the LGM climate of China based on an improved inverse vegetation model which incorporates physiological processes combined with a new China Quaternary Pollen Database.The results indicate that during the LGM,mean annual temperature(ANNT),mean temperature of the coldest month(MTCO)and mean temperature of the warmest month in China were lower by^5.6±0.8,~11.0±1.6 and^2.6±0.9°C,respectively,compared to today,and that the changes in ANNT were mainly due to the decrease of MTCO.The ANNT decrease in southern China was^5.5±0.5°C.Mean annual precipitation was lower by^46.3±17.8 mm compared to today and was especially low in northern China(~51.2±21.4 mm)due to the decrease in summer rainfall.Comparison of our results with recent outputs from paleoclimatic modelling reveals that while the latter are broadly consistent with our estimated changes in mean annual climatic parameters,there are substantial differences in the seasonal climatic parameters.Our results highlight the crucial importance of developing seasonal simulation on paleoclimatic models,as well as the need to improve the quality of paleoclimatic reconstructions based on proxy records from geological archives. | Haibin WU Qin LI Yanyan YU Aizhi SUN Yating LIN Wenqi JIANG Yunli LUO | 2019 | Science China Earth Sciences2019，62，8： | 3 |
| 9 | Life History Recorded in the Vagino-cervical Microbiome Along with Multi-omes显示文摘The vagina contains at least a billion microbial cells,dominated by lactobacilli.Here we perform metagenomic shotgun sequencing on cervical and fecal samples from a cohort of 516 Chinese women of reproductive age,as well as cervical,fecal,and salivary samples from a second cohort of 632 women.Factors such as pregnancy history,delivery history,cesarean section,and breastfeeding were all more important than menstrual cycle in shaping the microbiome,and such information would be necessary before trying to interpret differences between vagino-cervical microbiome data.Greater proportion of Bifidobacterium breve was seen with older age at sexual debut.The relative abundance of lactobacilli especially Lactobacillus crispatus was negatively associated with pregnancy history.Potential markers for lack of menstrual regularity,heavy flow,dysmenorrhea,and contraceptives were also identified.Lactobacilli were rare during breastfeeding or post-menopause.Other features such as mood fluctuations and facial speckles could potentially be predicted from the vagino-cervical microbiome.Gut and salivary microbiomes,plasma vitamins,metals,amino acids,and hormones showed associations with the vagino-cervical microbiome.Our results offer an unprecedented glimpse into the microbiota of the female reproductive tract and call for international collaborations to better understand its long-term health impact other than in the settings of infection or pre-term birth. | Zhuye Jie Chen Chen Lilan Hao Fei Li Liju Song Xiaowei Zhang Jie Zhu Liu Tian Xin Tong Kaiye Cai Zhe Zhang Yanmei Ju Xinlei Yu Ying Li Hongcheng Zhou Haorong Lu Xuemei Qiu Qiang Li Yunli Liao Dongsheng Zhou Heng Lian Yong Zuo Xiaomin Chen Weiqiao Rao Yan Ren Yuan Wang Jin Zi Rong Wang Na Liu Jinghua Wu Wei Zhang Xiao Liu Yang Zong Weibin Liu Liang Xiao Yong Hou Xun Xu Huanming Yang Jian Wang Karsten Kristiansen Huijue Jia | 2022 | Genomics, Proteomics & Bioinformatics2022，20，2： | 2 |
| 10 | Composition analysis and antioxidant activities of the Rhus typhina L.stem显示文摘The present investigation reports the chemical composition of the Rhus typhina L. stem identified via mass spectrometry and NMR as gallic acid, 1-O-galloyl-β-D-glucose, tryptophan, scopolin, methyl gallate, fustin, quercetin, rutin, and 1,2,3,4,6-penta-O-galloyl-β-D-glucose. The antioxidant properties and the chemical composition contents of the R. typhina L. stem grown in different regions in China were determined. To determine the antioxidant activity, a total phenolic content analysis, 2, 2-diphenyl-1-picrylhydrazyl radical scavenging activity assay, ferric reducing antioxidant power assay, and β-carotene linoleic acid model system were conducted. The results showed that the Rhus typhina L. stem possessed high antioxidant capacities due to its high phenolic content. The contents of the nine isolated compounds were determined by UPLC-ESI-MS/MS. The calibration curves of the nine isolated compounds were linear within the concentration range and the average recoveries were high. The result showed that 1-Ogalloyl-β-D-glucose, gallic acid, methyl gallate, and 1,2,3,4,6-penta-O-galloyl-β-D-glucose could be the compounds mainly responsible for the antioxidant capacity of the R. typhina L. stem. This reveals that the R. typhina L. stem is a good source of antioxidants. | Ting Liu Zhaoqin Li Ruiyun Li Yue Cui Yunli Zhao Zhiguo Yu | 2019 | Journal of Pharmaceutical Analysis2019，9，5： | 2 |
| 11 | Tip-assisted ambient electric arc ionization mass spectrometry for rapid detection of trace organophosphorus pesticides in strawberry显示文摘In this study,an ambient mass spectrometry(AMS)based method was developed for rapid detection of organophosphorus pesticides in strawberry.This method combines an electric arc and a microsyringe tip to realize tip-assisted ambient electric arc ionization(TAAEAI).A high-voltage electric arc can be applied to the microsyringe tip to generate an electric field,which results in corona discharge at the microsyringe tip.The juiced strawberry sample loaded on the tip could be directly ionized with TAAEAI and then analyzed by a mass spectrometer.TAAEAI-MS was successfully applied to analyze 6 organophosphorus pesticides in three strawberry samples.Malathion and profenofos were detected from the investigated strawberry samples.This method could quantitatively determine the contents of organophosphorus pesticides in strawberry with high reproducibility,high precision,and high sensitivity.Sample matrices did not interfere with the pesticide analysis.The recoveries of organophosphorus pesticides spiked in strawberry samples varied between 82.6%and 116%with relative standard deviations(RSDs)less than 9.2%.The limits of detection(LODs)varied between 0.0124µg/g and 0.0245µg/g,while the limits of quantification(LOQs)varied between 0.0413µg/g and 0.0817µg/g.The coefficients of determination(R2)of the method were determined to be>0.995.The method established here may have potential application in the detection of organophosphorus pesticides in vegetables and fruits. | Zihan Ma Yuanji Gao Fengjian Chu Yunli Tong Yuwen He Yuan Li Zhan Gao Weiwei Chen Shuheng Zhang Yuanjiang Pan | 2022 | Chinese Chemical Letters2022，33，9： | 2 |
| 12 | Effect of Rare Earth Element Ce on Microstructure and Properties of Aluminum Rod for Electrical Purpose显示文摘The effect of rare earth element Ce on microstructure, electrical conductivity and mechanical properties was studied.Using optical microscope, scanning electron microscope, transmission electron microscope and X-ray diffractometer, the microstructure and phase composition of aluminum rod for electrical purpose were measured and analyzed.The results indicate that rare earth element Ce can considerably refine grain size of aluminum rod for electrical purpose,improve the regular distribution pattern of the impurity, such as silicon and iron which present in the aluminum matrix,form stable metal compound with pernicious impurity.This metal compound precipitates on the crystal boundary.As a result, the solid solubility of impurity in aluminum reduce, and the electrical conductivity of aluminum rod for electrical purpose is improved.It is found that the mechanical properties of aluminum rod for electrical purpose are improved by rare earth element in certain range of RE addition. | Li Pengfei Wang Yunli Gao Xizhu Wang Zaiyun | 2004 | Journal of Rare Earths2004，22，z1： | 2 |
| 13 | A haplotype map of genomic variations and genome-wide association studies of agronomic traits in foxtail millet(Setaria italica)显示文摘 | Guanqing Jia Xuehui Huang Hui Zhi Yan Zhao QiangZhao Wenjun Li Yang Chai Lifang Yang Kunyan Liu Hengyun Lu Chuanrang Zhu Yiqi Lu Congcong Zhou Danlin Fan Qijun Weng Yunli Guo Tao Huang LeiZhang Tingting Lu Qi Feng Hangfei Hao HongkuanLiu Ping Lu Ning Zhang Yuhui Li Erhu Guo ShujunWang Suying Wang Jinrong Liu Wenfei Zhang GuoqiuChen Baojin Zhang Wei Li Yongfang Wang HaiquanLi Baohua Zhao Jiayang Li Xianmin Diao Bin HanJia | 2013 | Nature Genetics2013，45，8： | 1 |
| 14 | Metabolic profiling of a Rhizopus oryzae fumaric acid production mutant generated by femtosecond laser irradiation显示文摘 | Shouzhi Yu Di Huang Jianping Wen Shuang Li Yunli Chen Xiaoqiang Jia | 2012 | Bioresource Technology2012，，： | 1 |
| 15 | Delivery of alginate‐chitosan hydrogel promotes endogenous repair and preserves cardiac function in rats with myocardial infarction显示文摘 | Biyong Deng Li Shen Yizhe Wu Yunli Shen Xuefeng Ding Shuyang Lu Jianguo Jia Juying Qian Junbo Ge | 2015 | J. Biomed. Mater. Res2015，，3： | 1 |
| 16 | The vegetation and climate at the last glaciation on the emerged continental shelf of the South China Sea 显示文摘 | SUN XIANGJUN LI XU YUNLI | 2000 | Palaeogeography Palaeoclima-tology Palaeoecology2000，160，3： | 1 |
| 17 | Vegetation and climate on the Sunda Shelf of the South China Sea during the Last Glaciation pollen results from station 17962显示文摘 | SUN XIANGJUN LI XUN LUO YUNLI | 2002 | Acta Botanica Sinica-Chinese2002，44，6： | 1 |
| 18 | Ionicliquidsbased single drop microextraction combined with electrothermal vaporization inductively coupled plasma mass spectrometry for determination of Co, Hg and Pb in biological and environmental samples显示文摘 | Linbo Xia Xuan Li Yunli Wu | 2008 | Spectrochimica Acta Part B: Atomic Spectroscopy2008，63，： | 1 |
| 19 | Develop way of EIT study in China显示文摘 | Ren chaoshi Li sui Cui yunli Wang huiyan Lin guojing(Institute of Biomedical Engineering,Chinese Academy of Medical Sciences & Peking Union Medical College Tianjin 300192,China) | 1997 | Chinese Journal of Biomedical Engineering(English Edition)1997，6，3： | 1 |
| 20 | Extended Local Binary Patterns for Texture Classification显示文摘 | Liu Li Zhao Lingjun Long Yunli | 2012 | Image and Vision Computing2012，30，2： | 1 |
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