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| 1 | Full automorphism group of the generalized symplectic graph显示文摘Let Fq be a finite field of odd characteristic, m, ν the integers with 1≤m≤ν and Ka 2ν× 2ν nonsingular alternate matrix over Fq. In this paper, the generalized symplectic graph GSp2ν (q, m) relative to K over Fq is introduced. It is the graph with m-dimensional totally isotropic subspaces of the 2ν-dimensional symplectic space F(2ν)q as its vertices and two vertices P and Q are adjacent if and only if the rank of PKQT is 1 and the dimension of P ∩ Q is m-1. It is proved that the full automorphism group of the graph GSp2ν(q, m) is the projective semilinear symplectic group PΣp(2ν, q). | ZENG LiWei CHAI Zhao FENG RongQuan MA ChangLi | 2013 | Science China Mathematics2013，56，7： | 4 |
| 2 | REMOTE SENSING OF ALGAL BLOOMS USING A TURBIDITY-FREE FUNCTION FOR NEAR-INFRARED ANDRED SIGNALS显示文摘This article presents a method for real- time mapping of algal blooms in turbid coastal waters using the remote sensing reflectance of red band (Channel 1, 580-680 nm) and near-infrared band (Channel 2, 720-1100 nm) of the AVHRR sensor on the NOAA series satellites. A turbidity-free function for near-infrared and red signals, α0 = (bb(1)/bb(2))(a(2)/ a(1)) based on the first order bb/(a+bb) model deduc-ing equation Rrs(2)?1 = α0 Rrs(1) ?1+ g?1 (1?α0), were se-lected as a chlorophyll-a related index for detecting algal blooms, and the algal blooms with chlorophyll-a concentration of 64-256 mg/L could be defined by window of 1.6 < α0 < 5.2 and 0.01< Rrs(2)/g < 0.2. Such turbidity-free two-band method is supported by both sea-truth data and remote sensing experiment for an algal blooms event on the near-shore water off the Minjiang estuary of southeastern China during early June of 2003. Comparisons of this algorithm with other published algorithms, one-band method (i.e. method of bright water) or two-band methods (i.e. method of ratio, method of NDVI, and method of subtracting) have suggested that the turbidity-free function method could be regarded as a standard algorithm in capabilities of AVHRR imagery or other high resolution but wide near-infrared and red band imagery for detecting algal blooms events in coastal waters. | LI Yan SHANG Shaoling ZHANG Caiyun MA Xiaoxin HUANG Liwei WU Jingyu ZENG Yindong | 2006 | Chinese Science Bulletin2006，51，4： | 2 |
| 3 | A spectral projection method for transmission eigenvalues显示文摘We consider a nonlinear integral eigenvalue problem, which is a reformulation of the transmission eigenvalue problem arising in the inverse scattering theory. The boundary element method is employed for discretization, which leads to a generalized matrix eigenvalue problem. We propose a novel method based on the spectral projection. The method probes a given region on the complex plane using contour integrals and decides whether the region contains eigenvalue(s) or not. It is particularly suitable to test whether zero is an eigenvalue of the generalized eigenvalue problem, which in turn implies that the associated wavenumber is a transmission eigenvalue. Effectiveness and efficiency of the new method are demonstrated by numerical examples. | ZENG Fang SUN JiGuang XU LiWei | 2016 | Science China Mathematics2016，59，8： | 2 |
| 4 | Research on the new performance model for low light level imaging system 显示文摘 | Ai Kecong Zhou Liwei Zeng Guilin Liang Yanxi | 2002 | SPIE2002，4925，： | 1 |
| 5 | Study of nucleation mechanism for grain refinement in A357 alloy by Al -Ti-B master alloys显示文摘 | ZHU Zhaojun ZENG Songyan GUO Liwei | 2003 | Trans Nonferrous Met Soc China2003，13，1： | 1 |
| 6 | Enhancement of refresh time in quasi-nonvolatile memory by the density of states engineering显示文摘The recently reported quasi-nonvolatile memory based on semi-floating gate architecture has attracted extensive attention thanks to its potential to bridge the large gap between volatile and nonvolatile memory.However,the further extension of the refresh time in quasi-nonvolatile memory is limited by the charge leakage through the p-n junction.Here,based on the density of states engineered van der Waals heterostructures,the leakage of electrons from the floating gate to the channel is greatly suppressed.As a result,the refresh time is effectively extended to more than 100 s,which is the longest among all previously reported quasi-nonvolatile memories.This work provides a new idea to enhance the refresh time of quasi-nonvolatile memory by the density of states engineering and demonstrates great application potential for high-speed and low-power memory technology. | Zhaowu Tang Chunsen Liu Senfeng Zeng Xiaohe Huang Liwei Liu Jiayi Li Yugang Jiang David Wei Zhang Peng Zhou | 2021 | Journal of Semiconductors2021，42，2： | 1 |
| 7 | Forage and bed sites characteristics of Indian muntjac (Muntiacus muntjak) in Hainan Island, China显示文摘 | Liwei TENG Zhensheng LIU Yan-Ling SONG Zhigao ZENG | 2004 | Ecological Research2004，，6： | 1 |
| 8 | MashReDroid:enabling end-user creation of Android mashups based on record and replay显示文摘To allow end users to combine different apps for accomplishing various goals,it is desired that they can create mashups of mobile apps in an on-demand fashion.The end user creation of mobile mashups,however,is complicated by the fact that many apps do not expose interfaces for mashup and the lack of user friendly interfaces for end user programming.In this paper,we propose MashReDroid,an end user programming approach for the creation of Android mashups that incorporates the behaviors of backend apps into the execution of a host app.MashReDroid automatically transforms Android apps into mashup enabled apps.It then allows end users to create mashups by recording the interactions between host apps and backend apps and run mashups by replaying the interactions.Our evaluation shows that MashReDroid supports a variety of real scenarios and users can easily create and use mashups with a very low overhead. | Jiahuan ZHENG Liwei SHEN Xin PENG Hongchi ZENG Wenyun ZHAO | 2020 | Science China(Information Sciences)2020，63，10： | 1 |
| 9 | Impact of living donor liver with steatosis and idiopathic portal inflammation on clinical outcomes in pediatric liver transplantation:Beijing experience显示文摘Background:To evaluate the impact of steatosis and/or idiopathic portal inflammation(IPI)in living donor livers on recipients’clinical outcomes.Methods:We assessed 305 qualified donor liver samples from June 2013 to December 2018.Donors and recipients’clinical characteristics,including follow-up data were retrieved.The graft and overall survival with/without steatosis or portal inflammation were compared by Kaplan-Meier analysis.Results:For living donors,the medium age of was 31.2(28,35.8)years old;liver histopathology showed macrovesicular steatosis:0-5%264/305(86.6%)and 5-30%41/305(13.4%),IPI:no 220/305(72.1%)and mild 85/305(27.9%).For recipients,the medium age was 1.0(0.6,1.5)years old;the median pediatric-end-stage-liver-disease score was 16(5.0,26.0)and medium follow-up time was 32.8(24.8,52.0)months.Biliary atresia(69.5%)was the main indication for liver transplantation(LT).Conclusions:The presence of steatosis and portal inflammation of the donor liver did not impact the clinical outcomes including transaminase or bilirubin normalization,short-/long-term complications and recipients’survival.However,recipients with high pediatric-end-stage-liver-disease score(>16)receiving donor liver with portal inflammation,but not steatosis,had trend negative effect on recipients’survival.In conclusion,donor livers with mild steatosis and portal inflammation were qualified for pediatric living donor LT.However,donor liver with mild portal inflammation would better not be allocated to recipients with high pediatric-end-stage-liver-disease score.This study provided new evidence in pediatric living donor liver allocation. | Xinyan Zhao Yafei He Jimin Liu Qian Zhang Liwei Liu Wei Qu Ying Liu Zhigui Zeng Haiming Zhang Jidong Jia Liying Sun Lin Wei Zhijun Zhu | 2022 | Hepatobiliary Surgery and Nutrition2022，11，3： | 1 |
| 10 | Statistical analysis for genome-wide association study显示文摘In the past few years, genome-wide association study(GWAS) has made great successes in identifying genetic susceptibility loci underlying many complex diseases and traits. The findings provide important genetic insights into understanding pathogenesis of diseases. In this paper, we present an overview of widely used approaches and strategies for analysis of GWAS, offered a general consideration to deal with GWAS data. The issues regarding data quality control, population structure, association analysis, multiple comparison and visual presentation of GWAS results are discussed; other advanced topics including the issue of missing heritability, meta-analysis, setbased association analysis, copy number variation analysis and GWAS cohort analysis are also briefly introduced. | Ping Zeng Yang Zhao Cheng Qian Liwei Zhang Ruyang Zhang Jianwei Gou Jin Liu Liya Liu Feng Chen | 2015 | The Journal of Biomedical Research2015，29，4： | 0 |
| 11 | Ultrafast flash memory with large self-rectifying ratio based on atomically thin MoS_(2)-channel transistor显示文摘Flash memory with high operation speed and stable retention performance is in great demand to meet the requirements of big data.In addition,the realisation of ultrafast flash memory with novel functions offers a means of combining heterogeneous components into a homogeneous device without considering impedance matching.This report proposes a 20 ns programme flash memory with 10^(8) self-rectifying ratios based on a 0.65 nm-thick MoS_(2)-channel transistor.A high-quality van der Waals heterojunction with a sharp interface is formed between the Cr/Au metal floating layer and h-BN tunnelling layer.In addition,the large rectification ratio and low ideality factor(n=1.13)facilitate the application of the MoS_(2)-channel flash memory as a bit-line select transistor.Finally,owing to the ultralow MoS_(2)/h-BN heterojunction capacitance(50 fF),the memory device exhibits superior performance as a high-frequency(up to 1 MHz)sine signal rectifier.These results pave the way toward the potential utilisation of multifunctional memory devices in ultrafast two-dimensional NAND-flash applications. | Liwei Liu Yibo Sun Xiaohe Huang Chunsen Liu Zhaowu Tang Senfeng Zeng David Wei Zhang Shaozhi Deng Peng Zhou | 2022 | Materials Futures2022，1，2： | 0 |
| 12 | High frequency of alternative splicing variants of the oncogene Focal Adhesion Kinase in neuroendocrine tumors of the pancreas and breast显示文摘The characteristic genetic abnormality of neuroendocrine neoplasms(NENs),a heterogeneous group of tumors found in various organs,remains to be identified.Here,based on the analysis of the splicing variants of an oncogene Focal Adhesion Kinase(FAK)in The Cancer Genome Atlas datasets that contain 9193 patients of 33 cancer subtypes,we found that Box 6/Box 7-containing FAK variants(FAK^(6/7))were observed in 7(87.5%)of 8 pancreatic neuroendocrine carcinomas and 20(11.76%)of 170 pancreatic ductal adenocarcinomas(PDACs).We tested FAK variants in 157 tumor samples collected from Chinese patients with pancreatic tumors,and found that FAK^(6/7)was positive in 34(75.6%)of 45 pancreatic NENs,19(47.5%)of 40 pancreatic solid pseudopapillary neoplasms,and 2(2.9%)of 69 PDACs.We further tested FAK splicing variants in breast neuroendocrine carcinoma(BrNECs),and found that FAK^(6/7)was positive in 14(93.3%)of 15 BrNECs but 0 in 23 non-NEC breast cancers.We explored the underlying mechanisms and found that a splicing factor serine/arginine repetitive matrix protein 4(SRRM4)was overexpressed in FAK^(6/7)-positive pancreatic tumors and breast tumors,which promoted the formation of FAK^(6/7)in cells.These results suggested that FAK^(6/7)could be a biomarker of NENs and represent a potential therapeutic target for these orphan diseases. | Dawei Xie Zheng Wang Beibei Sun Liwei Qu Musheng Zeng Lin Feng Mingzhou Guo Guizhen Wang Jihui Hao Guangbiao Zhou | 2023 | Frontiers of Medicine2023，17，5： | 0 |
| 13 | A three-dimensional hollow graphene fiber microelectrode with shrink-effect-enabled enzyme immobilization for sensor applications显示文摘Microelectrodes are a type of electrode with microscopic dimension, and due to their rapid diffusing rates, high electrical current densities and signal-to-noise ratios, they can help improve the detection sensitivity for various analytes [1]. Investigations on the fabrication and the application of microelectrodes are highly relevant. Fiber-type microelectrodes with one-dimensional (ID) microstructures that possess ID diffusion, particularly carbon fiber microelectrodes, have been widely fabricated and used in many different types of sensors due to their low cost, small volume, portability, and good biocompatibility [1,2]. However, poor electrocatalytic activity and low response currents preclude the applications of carbon fiber microelectrodes in sensors. | Liwei Chen Xiaoteng Ding Jinfeng Zeng Lejiao Chongbei Wu Yuze Wang Qing Han Liangti Qu | 2019 | Science Bulletin2019，64，11： | 0 |
| 14 | Effect of calcination temperature on B-site vacancy content of La0.75Sr0.25Mn0.92△0.08O3-δperovskite显示文摘Lanthanum manganite with cation vacancies from nominal La_(0.75)Sr_(0.25)Mn_(0.92)△_(0.08)O_(3-δ) nanocrystalline powder was successfully prepared at different calcination temperatures using the sol-gel method. X-ray diffraction shows that as the calcination temperature(T_(Cal)) increases, the crystal particle diameter increases, but the B-site vacancy content decreases. According to a powder diffraction profile fitting technique and transmission electron microscopy results, the vacancy content can be estimated as 0.08,0.01, and 0.005 for T_(Cal) = 1073,1273, and 1473 K, respectively. Magnetization versus temperature curves show that the magnetic transition temperatures, including the Curie temperature, are influenced by both B-site vacancies and double-exchange interaction between Mn^(3+) and Mn^(4+) cations. A core-shell model is proposed for vacancies located on the surfaces of the crystal particles. As an application, the magnetic moment angle θ_(ij) between Mn^(3+) and Mn^(4+) cations on the surface, which decreases with decreasing vacancy content, can be obtained. | Denghui Ji Shuling Wang Xingze Ge Xinju Xiao Liwei Wang Zhiwei Zeng Congmin Zhang | 2018 | Journal of Rare Earths2018，36，3： | 0 |
| 15 | A Class of Association Schemes and Their Automorphisms显示文摘In this paper,we construct a class of association schemes by using pairs of subspaces of vector spaces and determine their full automorphism groups. | Changli Ma Shuxia Liu Yanan Feng Yang Zhang Liwei Zeng | 2022 | Algebra Colloquium2022，29，3： | 0 |
| 16 | █████显示文摘The recently reported quasi-nonvolatile memory based on semi-floating gate architecture has attracted extensive attention thanks to its potential to bridge the large gap between volatile and nonvolatile memory.However,the further extension of the refresh time in quasi-nonvolatile memory is limited by the charge leakage through the p-n junction.Here,based on the density of states engineered van der Waals heterostructures,the leakage of electrons from the floating gate to the channel is greatly suppressed.As a result,the refresh time is effectively extended to more than 100 s,which is the longest among all previously reported quasi-nonvolatile memories.This work provides a new idea to enhance the refresh time of quasi-nonvolatile memory by the density of states engineering and demonstrates great application potential for high-speed and low-power memory technology. | Zhaowu Tang Chunsen Liu Senfeng Zeng Xiaohe Huang Liwei Liu Jiayi Li Yugang Jiang David Wei Zhang Peng Zhou | 2021 | Journal of Semiconductors2021，42，2： | 0 |
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