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| 1 | Rapid determination of pesticide residues in Chinese materia medica using QuEChERS sample preparation followed by gas chromatography-mass spectrometry显示文摘Pesticide residue analysis plays an important role in the quality control of Chinese materia medica.This paper reports the development and validation of an analytical method for the quantitative determination of the residues of 39 pesticides in 12 different matrices of Chinese materia medica.Sample preparation utilized the QuEChERS method with acetonitrile:1% aqueous acetic acid(9:1,v/v)as extraction solvent followed by sample clean-up by dispersive solid phase extraction using primary secondary amine sorbent and graphitized carbon black.Extracts were then analysed by gas chromatography coupled with electron impact mass spectrometry in the selected ion monitoring mode.Limit of detection(LOD)and limit of quantitation(LOQ)values were in the ranges 0.5-50 ng/g and 1-100 ng/g,respectively.The recoveries of the 39 pesticides were in the range 75-112% with precision(as relative standard deviation,RSD)<15%.The results show that the modified QuEChERS method allows rapid and sensitive analysis of multiple pesticide residues in Chinese materia medica. | Yichen Hu Li Wan Jinming Zhang Fang Yang Jiliang Cao | 2012 | Acta Pharmaceutica Sinica B2012，2，3： | 11 |
| 2 | Investigation of Nb Ox-based volatile switching device with self-rectifying characteristics显示文摘Dear editor,Resistive random access memory(RRAM),one of the most promising emerging non-volatile memory technologies,has been extensively investigated by researchers from both academia and industry due to its fast speed and excellent scalability for storage class memory(SCM)[1-3].To achieve large-scale integration in an RRAM array,each cell needs to contain a nonlinear device to eliminate the sneak path which may lead to false program and read-margin narrowing[2,3].Usually,transistors or selectors are serially connected to RRAM cells to act as the selective elements. | Yichen FANG Zongwei WANG Caidie CHENG Zhizhen YU Teng ZHANG Yuchao YANG Yimao CAI Ru HUANG | 2019 | Science China(Information Sciences)2019，62，12： | 2 |
| 3 | Hsp70 chaperones TDP-43 in dynamic, liquid-like phase and prevents it from amyloid aggregation显示文摘Dear Editor,TAR DNA-binding protein 43 kDa(TDP-43)undergoes liquid-liquid phase separation(LLPS)and forms reversible,cytoprotective nuclear bodies(NBs)under stress.1 Abnormal liquid-to-solid phase transition condenses TDP-43 into irreversible pathological fibril,which is associated with neurodegenerative disorders including amyotrophic lateral sclerosis(ALS)and frontotemporal degeneration(FTD). | Jinge Gu Chen Wang Rirong Hu Yichen Li Shengnan Zhang Yunpeng Sun Qiangqiang Wanq Dan Li Yanshan Fang Cong Liu | 2021 | Cell Research2021，31，9： | 1 |
| 4 | Geodesic saliency using background priors 显示文摘 | Wei Yichen Wen Fang Zhu Wangjiang | 2012 | Lecture Notes in Computer Science2012，7574，： | 1 |
| 5 | Face alignment by Explicit Shape Regression 显示文摘 | Xudong Cao Yichen Wei Fang Wen | 2012 | Computer Vision and Pattern Recognition2012，，： | 1 |
| 6 | The impact of posterior corneal astigmatism on the surgical planning of toric multifocal intraocular lens implantation显示文摘Purpose:To investigate the influence of posterior corneal astigmatism on the prediction accuracy of toric multifocal intraocular lens(IOL)calculation.Methods:The keratometric astigmatism measured by Lenstar LS 900(KCA_(L)),keratometric astigmatism(KCAp)and total corneal astigmatism(TCA)measured by Scheimpflug camera(Pentacam HR)were documented and analyzed accordingly.Three deduction models using different parameters were compared.Model 1:KCA_(L)+keratometric comeal surgically induced astigmatism(KCSIA,0.30 D@50°);Model 2:KCA_(P)+KCSIA);Model 3:TCA 4-total CSIA(TCSIA,0.23 D@50°).The prediction errors of each model as the difference vector between the actual and the intended residual astigmatism were compared.Results:Seventy-six eyes implanted with toric multifocal IOLs were included in this study.The vector differences of the actual KCSIA and TCSIA were statistically significant in the total sample and against-the-rule(ATR)subgroup(both P<0.05).Model 1 deduced the smallest mean values of prediction error,while that of Model 3 were smaller than that of Model 2,both in the total sample and the ATR subgroups(all P<0.05).Meanwhile,in the total sample and ATR subgroups,the centroid vector magnitudes of Model 3 were smaller than that of Model 1(0.31±0.76 D and 0.39±0.76 D).Conclusions:The calculation of toric multifocal IOL should be individualized especially in the ATR eyes for the impact of PCA on the estimation of the preoperative comeal astigmatism and the CSIA. | Shaochong Bu Yuanfeng Jiang Yichen Gao Xiaomei Bai Xiteng Chen Hong Zhang Fang Tian | 2023 | Advances in Ophthalmology Practice and Research2023，3，1： | 0 |
| 7 | Research on the interaction design of somatosensory games——With the original game "Dream" in the center显示文摘 | YANG Yuan WANG Ziyan SHEN Jiadan FANG Yichen | 2016 | International English Education Research2016，，12： | 0 |
| 8 | Integration of biocompatible organic resistive memory and photoresistor for wearable image sensing application显示文摘The integration of multiple functional devices to achieve complex functions has become an essential requirement for future wearable biomedical electronic devices and systems. In this paper, we present a flexible multi-functional device composed of a biocompatible organic polymer resistive random-access memory(RRAM) and a photoresistor for wearable image sensing application. The resistive layer of organic polymer RRAM is composed by polychloro-para-xylylene(parylene-C), which is a flexible, transparent, biocompatibility and chemical stability polymer material. What is more, parylene-C is quite safe to be used within human body as it is a Food and Drug Administration(FDA)-approved material. This organic RRAM shows stable switching characteristics, low operation voltages(3.25 V for set voltage and-0.55 V for reset voltage), low static power consumption, high storage window and good retention properties(>10~4 s).A multi-functional device that can detect the light intensity of incident light and simultaneously store the information in the memory devices for wearable image sensing application was proposed and fabricated by integrating the organic resistive memory and a photoresistor. The threshold of incident light intensity can be easily adjust by changing the external voltage. This device is promising for building wearable electronic systems with various multiple functionalities. | Qingyu CHEN Min LIN Yichen FANG Zongwei WANG Yuchao YANG Jintong XU Yimao CAI Ru HUANG | 2018 | Science China(Information Sciences)2018，61，6： | 0 |
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