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贲门周围血管缝扎术治疗肝硬化门静脉高压临床分析

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中国实用医刊 2014年第8期41卷 10-12页

作者：宋黎明马秀现孙玉岭李德旭冯留顺郑州大学第一附属医院肝胆外科 450052

目的探讨贲门周围血管缝扎术治疗肝硬化门静脉高压的临床疗效。方法回顾性分析2006年7月至2010年9月收治的门静脉高压症185例患者的临床资料，其q-68例行贲门周围血管断流术，117例行贲门周围血管缝扎术。通过对两种治疗方式的临床疗效... 详细信息

目的探讨贲门周围血管缝扎术治疗肝硬化门静脉高压的临床疗效。方法回顾性分析2006年7月至2010年9月收治的门静脉高压症185例患者的临床资料，其q-68例行贲门周围血管断流术，117例行贲门周围血管缝扎术。通过对两种治疗方式的临床疗效的观察，术q-自由门静脉压（FPP）的动态监测，对术中、术后各临床观察指标，术后远期并发症及生存率行对比研究。结果术后两组FPP均下降，缝扎术组与断流术组比较差异有统计学意义（P〈0．01），FPP下降幅度：缝扎术组〉断流术组。对照两种手术方式术中及术后各临床指标，两组间各指标比较差异均有统计学意义（P均〈0．01）。缝扎术组及断流术组均无手术死亡病例，断流术组再出血率高于缝扎术组，断流术组与缝扎组肝性脑病发生率相近，断流术组3年生存率低于缝扎术组。结论贲门周围血管缝扎术能降低患者FPP，同时能够有效减少食管及胃底部曲张静脉破裂再出血率，降低术后并发症发生率及病死率。

关键词：门静脉高压断流术血管缝扎

Rapid Determination of Endogenous 20-Hydroxyecdysone in Plants on MALDI-TOF/TOF Mass Spectrometry via Chemical Labeling Based on Boronate Affinity

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Journal of Analysis and Testing 2022年第3期6卷 318-326页

作者： Ya-shun Chen Yu-Qi feng College of Science Honghe UniversityMengzi 661100China Department of Chemistry Wuhan UniversityWuhan 430072China

20-Hydroxyecdysone(20E)derived from plants has a wide range of physiological and pharmacological ef ects on animals and humans,and rapid and sensitive methods for screening of the endogenous 20E in plants are thus ***,a matrixassisted laser desorption/ionization time-of-f ight tandem mass spectrometry(MALDI-TOF/TOF MS)method is described for rapid and sensitive determination of endogenous 20E in *** is based on the use of the(3-(acridin-9-ylamino)phenyl)boronic acid(AYPBA)as the mass tag to assist the MS and tandem MS(MS^(n))analysis of 20E on MALDI-TOF/TOF *** linearity was obtained with a determination coef cient(R^(2))larger than 0.99 in the range of 0.025–2.5μΜ.The limit of detection(LOD)was 2.4 *** precision and accuracy were gained by intra-and inter-day analysis with relative standard deviations less than 19.5%and relative recoveries ranging from 85.7 to 105.2%.In addition,the AYPBA labeled 20E produced abundant characteristic fragment ions under the high energy collision-induced dissociation,which facilitated the identif cation of 20E by MS^(2)analysis on MALDI-TOF/TOF *** the method,we enabled the identif cation and quantif cation of endogenous 20E in four herbs including Cyanotis arachoidea,Achyranthes bidentata,Spinacia oleracea and Chenopodium quinoa willd.,demonstrating the feasibility of the proposed method for screening of the endogenous 20E in plants.

关键词： Matrix-assisted laser desorption/ionization time-of-flight tandem mass spectrometry 20-Hydroxyecdysone Chemical labeling Boronate affinity

Interfacial Improvement of Carbon Fiber/Epoxy Composites by Incorporating Superior and Versatile Multiscale Gradient Modulus Intermediate Layer with Rigid-flexible Hierarchical Structure

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Chinese Journal of Polymer Science 2021年第7期39卷 896-905页

作者： Pei-feng feng Guo-Jun Song Wen-Jian Zhang Hao Zheng Bo-Wen Li Shao-feng Zhou Ya-Qing liu Guang-shun Wu Li-Chun Ma Institute of Polymer Materials School of Material Science and EngineeringQingdao UniversityQingdao 266071China Shanxi Province Key Laboratory of Functional Nanocomposites North University of ChinaTaiyuan 030000China School of Chemistry and Materials Science Ludong UniversityYantai264025China

In order to enhance the interfacial adhesion of carbon fiber(CF)and polymer matrix,a multiscale gradient modulus intermediate layer with rigid-flexible(GO-PA)hierarchical structure was designed and fabricated between CFs and matrix by a facile and businesslike *** polarity,roughness and wettability of CFs surface as well as the thickness of intermediate layer in composite have been significantly increased after rigid-flexible hierarchical structure was *** IFSS,ILSS,compression and impact toughness manifested that the hierarchical structure could bring about a fantastic improvement(76.8%,46.4%,40.7%and 37.8%)for the interfacial and mechanical properties than other previous ***,the establishment of CF surface with gradient modulus rigid-flexible hierarchical structure via regulation of nanoparticles and polymer array would open a new,viable and promising route to obtaining high-performance composites.

关键词： Carbon fibers Polymer-matrix composites Interface Hierarchical structure Gradient modulus

Stability of Fullerene Cages:C_(30) to C_(70) and Their Dependence on Shared Pentagon Bonds

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Chinese Journal of Structural Chemistry 2006年第9期25卷 1051-1056页

作者： WU Hai-shun TIAN Xin-Xin JIAN Jian-feng feng Rui-Juan Chemistry and Material Science Institute Shanxi Normal University Linfen 041004 China

The topological characters of all fullerene isomers from C30 to C70 with respect to their number of shared pentagon bonds have been investigated. Systematic calculations were also carried out at the B3LYP/6-31G^＊ level. It is found that the most stable structure has the smallest number of shared pentagon bonds, and the relative energies of a given size show an increasing tendency to rise with Nss number which denotes the number of C-C bonds shared by pentagon. The topological criterion that has extremely low computational cost can be used as filtering principle to prescreen the thermodynamically viable fullerenes and predict the relative stability of isomers.

关键词： fullerene density functional theory most stable isomer topology Nss

Approximation Designs for Energy Harvesting Relay Deployment in Wireless Sensor Networks

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Journal of Computer Science & Technology 2022年第4期37卷 779-796页

作者： Yi Wang Yi-Xue liu shun-Jia Zhu Xiao-feng Gao Chen Tian School of Modern Posts Nanjing University of Posts and TelecommunicationsNanjing 210003China State Key Laboratory for Novel Software Technology Nanjing UniversityNanjing 210023China ByteDance Inc. Shanghai 201100China Key Laboratory of Artificial Intelligence of Ministry of Education Department of Computer Science and EngineeringShanghai Jiao Tong UniversityShanghai 200240China

Energy harvesting technologies allow wireless devices to be recharged by the surrounding environment, providing wireless sensor networks (WSNs) with higher performance and longer lifetime. However, directly building a wireless sensor network with energy harvesting nodes is very costly. A compromise is upgrading existing networks with energy harvesting technologies. In this paper, we focus on prolonging the lifetime of WSNs with the help of energy harvesting relays (EHRs). EHRs are responsible for forwarding data for sensor nodes, allowing them to become terminals and thus extending their lifetime. We aim to deploy a minimum number of relays covering the whole network. As EHRs have several special properties such as the energy harvesting and depletion rate, it brings great research challenges to seek an optimal deployment strategy. To this end, we propose an approximation algorithm named Effective Relay Deployment Algorithm, which can be divided into two phases: disk covering and connector insertion using the partitioning technique and the Steinerization technique, respectively. Based on probabilistic analysis, we further optimize the performance ratio of our algorithm to (5 + 6/K) where K is an integer denoting the side length of a cell after partitioning. Our extensive simulation results show that our algorithm can reduce the number of EHRs to be deployed by up to 45% compared with previous work and thus validate the efficiency and effectiveness of our solution.

关键词： approximation algorithm constraint relay deployment energy harvesting wireless sensor network

Three-dimensional conjugated macrocycle with large polyaromatic blocks constructed by post-π-extension

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Science China Chemistry 2020年第11期63卷 1626-1631页

作者： shun-He liu Hao Hou Ze-Ying Deng Xin-Rong Wang Chun Tang Yang-Yang Ju liu-Bin feng Yuan-Zhi Tan State Key Laboratory for Physical Chemistry of Solid Surfaces Collaborative Innovation Center of Chemistry for Energy MaterialsDepartment of ChemistryCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China

Generally,the conjugated homo-macrocycles(CHMs)are synthesized by covalently linking the repeating ***,large subunits are often difficult to conjugate together due to severe ***,large polyaromatic blocks can not only incorporate its appealing electronic and optical properties into CHMs but also distort the CHMs from planar to three-dimensional(3D)molecular *** we synthesized the 3D CHM composed of large polyaromatic units by post-π-***,cyclo-m-phenylenes,as the cyclic precursor,wereπ-extended by C-C coupling and then subjected to dehydrocyclization,affording cyclo-1,3-dibenzo[e,l]pyrenylenes(CMDP).The structures of CMDPs were unambiguously characterized by single crystal X-ray diffraction,showing a congested and strained 3D conformation,which was also confirmed by theoretical *** with the monomer,CMDPs showed redshifted absorption and emission,as well as a ten-fold enhancement in photoluminescence quantum yield,which could be attributed to their 3D conformation.

关键词： macrocycle 7r-extension polyaromatic photoluminescence

Tumor microenvironment-responsive arsenic-loaded layered double hydroxides film with synergistic anticancer and bactericidal activity

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Rare Metals 2024年第3期43卷 1207-1221页

作者： shun Xing Dong-Hui Wang Hai-feng Zhang Li-Dan liu Cheng-Ce Li Chao Wei Jun-Yu liu Nai-Jian Ge Xuan-Yong liu State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of CeramicsChinese Academy of SciencesShanghai200050China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing100049China Intervention Center Eastern Hepatobiliary Surgery HospitalThe Third Affiliated Hospital of Naval Medical UniversityShanghai200438China School of Health Sciences and Biomedical Engineering Hebei University of TechnologyTianjin300130China

Malignant obstruction makes gallbladder cancer have a high mortality ***-titanium alloy(nitinol)stents are commonly used as a local intervention to maximize patient survival time,but the stents lack antitumor and antibacterial capacity and are vulnerable to secondary ***-based drugs show good therapeutic promise against gallbladder *** meet clinical *** layered double hydroxides(LDHs)film is constructed on the nitinol,whose arsenite loading amounts rose by 60%after simple heat treatment compared with the conventional anion-exchange *** addition,calcination promotes the dissolution of nickel ions from the LDHs lattice,resulting in a powerful synergistic killing effect on tumor cells together with the released *** importantly,the calcined arsenic-loaded LDHs are sensitive to the acidic microenvironment of tumor tissues,which presents a much lower arsenic and nickel release amount in the normal tissues,guaranteeing its ***,the vertically sharp LDHs nanosheets can synergize with arsenic to achieve effective physical cleavage and chemical killing of adherent and planktonic *** short,we attempt to use arsenic drugs for local interventions and reasonably avoid their toxic side effects,which provides a new design idea for nitinol stents applied in the treatment of gallbladder cancer.

关键词： Nitinol Layered double hydroxides Arsenic Gallbladder cancer

The evolution of local structure of Mo6S8 during Li+ electrochemical storage studied by in-situ tender X-ray absorption spectroscopy

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Progress in Natural Science:Materials International 2022年第6期32卷 739-744页

作者： Pengfei Yu Yujian Xia Xuefei feng shun Zheng Guoxi Ren Nian Zhang Xiaosong liu Cheng Chen Xiangxin Guo State Key Laboratory of Functional Materials for Informatics Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences National Synchrotron Radiation Laboratory University of Science and Technology of China University of Chinese Academy of Sciences Tianmu Lake Institute of Advanced Energy Storage Technologies School of Physical Science and Technology Shanghai Tech University Shanghai BYD Co. Ltd. College of Physics Qingdao University

Chevrel phase Mo6S8has attracted great interest because of its capability to accommodate different types of small cations through reversible topotactic redox ***,the intercalation mechanism of Mo6S8is still far from being fully understood owing to the complexity of the crystal structure and limitation of the probe *** our study,the reaction mechanism of Li+intercalation into Mo6S8was studied as a model by in-situ tender X-ray absorption spectroscopy(itXAS) in the viewpoint of local *** to the isobestic points of the 1st derivative,the discharge process is divided into five regions while the charge process is divided into four regions,where most of the regions are assigned to the two-phase transition *** intensity change of the two spectroscopic features of the 1st derivative is found to be correlated,implying that the intercluster bond length directly affects the localization of the unoccupied states of the intracluster *** asymmetric evolution of the intensity of a’ and b’ as well as the asymmetric partition of reaction regions demonstrate the asymmetry of the reaction path in discharge and charge *** results help to clarify the remaining debates on the phase ***,itXAS is demonstrated to be a powerful tool to study the reaction mechanism of *** is complementary to NMR,XRD and so on.

关键词： Chevrel phases Cathode materials X-ray absorption In-situ measurement Local structure

Combining Metabolic Alkyne Labeling and Click Chemistry for Secretome Analysis of Serum-Containing Conditioned Medium

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Chinese Journal of Chemistry 2021年第7期39卷 1843-1848页

作者： Jiangnan Zheng Yuan Mao shun feng Ruijun Tian Department of Chemistry School of ScienceSouthern University of Science and TechnologyShenzhenGuangdong518055 China School of Life Science and Engineering Southwest Jiaotong UniversityChengduSichuan610031 China Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research Southern University of Science and Technology1088 Xueyuan RoadShenzhenGuangdong518055 China

Main observation and conclusion Bioorthogonal click chemistry has emerged as a powerful tool for the specific modification of proteins in complex *** labeling of proteins with azide followed by the copper-catalyzed azide−alkyne cycloaddition(CuAAC)with alkyne-based affinity probes/beads is widely applied to study protein turnover and post-translational modifications(PTMs).

关键词： Click chemistry Mass spectrometry Proteomics Secretome Metabolic labeling