oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2020 ( 1 )

2019 ( 245 )

2018 ( 1828 )

2017 ( 1659 )

Custom range...

Search Results: 1 - 10 of 111837 matches for " LIU Yong-Xiang "
All listed articles are free for downloading (OA Articles)
Page 1 /111837
Display every page Item
Misdiagnosis of left supraclavicular lymph node metastasis of hepatocellular carcinoma: A case report
Tao Liu,Jun-Fang Gao,Yong-Xiang Yi,Hai Ding
World Journal of Gastroenterology , 2013, DOI: 10.3748/wjg.v19.i6.960
Abstract: Left supraclavicular lymph node metastasis is a rare presentation of hepatocellular carcinoma (HCC). This phenomenon is easily neglected in the clinic. A 56-year-old man presented with HCC. On examination, a 1cm long left supraclavicular lymph node was palpated. Auxiliary examination indicated a lesion located in the right lobe of the liver. Fine needle aspiration cytology (FNAC) of the enlarged lymph node was performed; however, only necrosis was found. Hepatectomy was performed and HCC was confirmed by Hematoxylin-Eosin staining. However, 14 d after surgery, significantly enlarged left supraclavicular lymph nodes, a new intrahepatic lesion, and pulmonary and mediastinal metastasis appeared. An excisional biopsy of the left supraclavicular lymph node was performed, and its findings confirmed metastatic HCC. The patient’s HCC rapidly progressed and he died one month later. It is possible for HCC to metastasize to the left supraclavicular lymph node. Surgeons should always consider an overall physical examination. When left supraclavicular lymphadenopathy of unknown origin is encountered, FNAC should be performed initially. If the results are negative, an excisional biopsy and subsequent Positron emission tomography - computed tomography scanning should be performed. These are very important for making the correct diagnosis and for selecting reasonable therapies.
Enhanced Electrochromic Properties by Using a CeO2 Modified TiO2 Nanotube Array Transparent Counter Electrode
WEN Hao, LIU Zhi-Fu, YANG Qun-Bao, LI Yong-Xiang
无机材料学报 , 2012, DOI: 10.3724/sp.j.1077.2012.00074
Abstract: A new kind of electrochromic device composed of a CeO2 modified TiO2 nanotube array counter electrode and a working electrode of P3MeT film was reported. The counter electrode was fabricated by electrodepositing CeO2 nanoparticles onto the walls of anodized TiO2 nanotubes. The CeO2 modified TiO2 nanotube array counter electrode keeps a high transparency under working voltage. The charge capacity of CeO2 modified TiO2 nanotube array has an increase of 30% than that of un―modified TiO2 nanotube array electrode. Compared with the electrochromic device with a TiO2 nanotube array film electrode, the CeO2 modified TiO2 nanotube counter electrode based EC device has a fast decoloration time of 0.8 s. The fast response attributes to the high effective surface area and the fast charge transportation along the nanotube walls.
Scaled Model for Recognizing the Spatial Rotating Target
识别空间旋转目标的尺度模型

Liu Yong-xiang,Li Xiang,Zhuang Zhao-wen,
刘永祥
,黎湘,庄钊文

电子与信息学报 , 2004,
Abstract: Considering the uncertain for rotating velocity of spatial target and sample period of radar observation, there exists sampling rate variance between radar returns and template data, which decreases the degree of matching. In this paper, the ARMA model in multirate is provided, through which the model parameters of radar turns in the scale of template data can be gotten, and then data can be matched in the same scale. Experimental result shows the validity of proposed method.
Synthesis of Hydrotalcite-like Compound Pillared by Hetero-polyacid Anions in a Hydrothermal System
HUI Jian-bin,LIU Qing-fen,MA Yong-xiang,LIU Hui-zhou,LI Lian-sheng,XU Ru-Ren,
HUI Jian-bin
,LIU Qing-fen,MA Yong-xiang

过程工程学报 , 2001,
Abstract: Hetero-polyacid anions (PW12O403()-pillared hydrotalcite-like compound is directly and hydrothermally synthesized by the hot solution method. FTIR and XRD show that PW12O403( has been incorporated into the interstitial space with the dimension of 0.917 nm. The state of PW12O403( anion between the hydrotalcite sheets was also discussed. The title product can be expressed by formula Zn0.68Al0.32(OH)2](PW12O40] 0.11(3H2O after a serious study of TGA and chemical analysis.
Facile Synthesis of the Naturally Cytotoxic Triterpenoid Saponin Patrinia-Glycoside B-II and Its Conformer
Li Ren,Yong-Xiang Liu,Dan Lv,Mao-Cai Yan,Han Nie,Yang Liu,Mao-Sheng Cheng
Molecules , 2013, DOI: 10.3390/molecules181215193
Abstract: The first chemical synthesis of the natural triterpenoid saponin Patrinia-glycoside B-II, namely oleanolic acid 3- O-α-L-rhamnopyranosyl-(1→2)-[β-D-gluco-pyranosyl-(1→3)]-α-L-arabinopyranoside, has been accomplished in a linear 11-step sequence 11 with 9.4% overall yield. The abnormal 1 C 4 conformation of the arabinose residue was found to occur via conformational fluctuation during preparation of the intermediates. Molecular mechanism and quantum chemistry calculations showed that Patrinia-glycoside B-II and its conformer 1 cannot interconvert under normal conditions. Preliminary structure-activity relationships studies indicated that the 4 C 1 chair conformation of the arabinose residue in the unique α-L-rhamnopyranosyl-(1→2)-α-L-arabinopyranosyl disaccharide moiety is one of the chief positive factors responsible for its cytotoxic activity against tumors.
Passive RFID Attendance System Based on MSP430
基于MSP430的无源RFID考勤系统

LIANG Long,CUI Ting,MENG Xian,LIU Yong-Xiang,
梁龙
,崔婷,孟宪,刘永相

计算机系统应用 , 2012,
Abstract: With the developing of information technology, smart attendance system has been an essential facility for modem enterprise. In this paper, a low-power RFID system based on MSP430 and TRF7960 is designed. The reader can inquire passive tags which support ISO14443A protocol and has been planted with anti-collision algorithm. It has a read range of 8cm and can read 2 tags at the same time. Experimental results verify that the RFID reader is stable and reliable. Combined with the development of middle-ware and Web service application at the server, a complete solution of attendance system is achieved.
Phase Cancellation for Synthesizing Range Profiles of a Moving Target via Stepped Frequency Signal
步进频率信号相位对消合成运动目标距离像

Chen Hang-yong,Liu Yong-xiang,Li Xiang,Guo Gui-rong,
陈行勇
,刘永祥,黎湘,郭桂蓉

电子与信息学报 , 2007,
Abstract: In this paper, a new method is explored for synthesizing range profile of a moving target via stepped frequency signal. The principle of synthesizing range profile of an extended target is investigated for stepped frequency signal. The distortion of synthetic range profiles is discussed with the theory of Discrete Fourier Transform (DFT). Based on phase cancellation, a new technology is proposed to achieve range profile with out distortion for a moving target. The new technology does not need the estimation of the velocity. The result of emulation proves the effect of the method.
ANALYSIS OF MICRO-DOPPLER AND PARAMETERS ESTIMATION
微多普勒分析和参数估计

CHEN Hang-Yong,LIU Yong-Xiang,LI Xiang,GUO Gui-Rong,
陈行勇
,刘永祥,黎湘,郭桂蓉

红外与毫米波学报 , 2006,
Abstract: The conception of micro-Doppler rate was introduced.MicroDoppler was investigated for typical targets of micro-motion.Then time-frequency analysis was used to extract micro-Doppler signature,based on which an approach was proposed for estimating motion parameters.A simulation of micro-Doppler was presented for typical targets of micro-motion.The result of emulation validates the theoretical analysis.
Integrated Target Discrimination Model in Missile Defense System
导弹防御系统中的目标综合识别模型

Liu Yong-xiang,Zhu Yu-peng,Li Xiang,Zhuang Zhao-wen,
刘永祥
,朱玉鹏,黎湘,庄钊文

电子与信息学报 , 2006,
Abstract: Target discrimination is a key technique in missile defense system, and after analyzing the defense system configuration, an integrated target discrimination mathematical model based on recursive temporal-spatial data fusion is performed, which brings the expert knowledge, environmental information and measure information into the integrated discrimination flow. During spatial fusion process, the reliability of discrimination approach is measured by Analytical Hierarchy Process (AHP), and the concept of fusion weight is introduced to measure the value of discrimination approach for participating in fusion, which is determined by reliability of discrimination approach and consensus among sensors' results. During temporal fusion process, the fusion discrimination result is inherited and updated by Dempster-Shafer theory. Simulation results show that the integrated discrimination model can fuse the local decision from discrimination approaches effectively, restrain the influence of singularity and tolerate the error of discrimination.
Identification of sporulation-related genes in Aspergillus chevalieri var. intermedius by suppression subtractive hybridization
利用抑制性差减杂交技术鉴定谢瓦氏曲霉间型变种产孢相关的基因

TAN Yu-Mei,WANG Hai,LIU Yong-Xiang,LIU Zuo-Yi,
谭玉梅
,王海,刘永翔,刘作易

菌物学报 , 2013,
Abstract: 谢瓦氏曲霉间型变种Aspergillus chevalieri var. intermedius俗称“金花菌”,是茯砖茶发酵中的优势菌种,该菌在不同的渗透压胁迫下产生不同类型的孢子。采用抑制性差减杂交技术(suppression subtractive hybridization,SSH),以低渗条件下产生的子囊孢子和高渗条件下产生的分生孢子为材料分别与营养菌丝体构建两个正反向文库。每个库随机挑选400个阳性克隆进行测序。然后将所得到的基因片段在GenBank进行BLASTx和BLASTn同源比对,筛选出的差异表达的基因涉及蛋白质代谢、细胞代谢、转录调控等多个方面,其中可能参与有性产孢调控的基因有13条,可能参与无性产孢调控的基因有10条。
Page 1 /111837
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.