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Evaluation of the short-term outcomes of robotic-assisted radical resection for perihilar cholangiocarcinoma:a propensity-scored matching analysis

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Gastroenterology Report 2023年第1期11卷 254-259页

作者： xi-Tai Huang jin-Zhao xie jian-Peng Cai Wei Chen Liu-Hua Chen Li-jian Liang xiao-Yu Yin Department of Pancreato-Biliary Surgery The First Affiliated HospitalSun Yat-sen UniversityGuangzhouGuangdongP.R.China

Background:The application of robotic-assisted radical resection in perihilar cholangiocarcinoma(pCCA)remains poorly *** study aimed to evaluate the safety and efficacy of robotic-assisted radical resection for pCCA in our ***:Between July 2017 and July 2022,pCCA patients undergoing robotic-assisted and open radical resection at First Affiliated Hospital of Sun Yat-sen University(Guangzhou,China)were *** short-term outcomes were compared by using propensity-scored matching(PSM)***:Eighty-six pCCA patients were *** PSM at a ratio of 1:2,10 and 20 patients were assigned to the roboticassisted and open groups,*** were no significant disparities in the clinicopathological features between the two *** robotic-assisted group had significantly longer operation time(median:548 vs 353 min,P=0.004)and larger total number of lymph nodes examined(median:11 vs 5,P=0.010)than the open *** robotic-assisted group tended to have a lower intraoperative blood loss(median:125 vs 350 mL,P=0.067),blood transfusion rates(30.0%vs 70.0%,P=0.056),and post-operative overall morbidities(30.0%vs 70.0%,P=0.056)than the open group,even though the differences were not statistically *** were no significant differences in the negative resection margin,post-operative major morbidities,or post-operative length-of-stay between the robotic-assisted and open groups(all P>0.05).Conclusions:Robotic-assisted radical resection of pCCA may get a larger total number of lymph nodes examined than open *** robotic-assisted surgery may be a feasible and safe technique for selected pCCA patients.

关键词： robotic-assisted surgery perihilar cholangiocarcinoma biliary reconstruction

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Diverse and variable sex determination mechanisms in vertebrates

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Science China(Life Sciences) 2018年第12期61卷 1503-1514页

作者： xi-Yin Li jian-Fang Gui State Key Laboratory of Freshwater Ecology and Biotechnology Institute of Hydrobiology College of Modern Agriculture Sciences University of Chinese Academy of Sciences The Innovative Academy of Seed Design Chinese Academy of Sciences

Sex is prevalent in nature and sex determination is one of the most fundamental biological processes, while the way of initiating female and male development exhibits remarkable diversity and variability across vertebrates. The knowledge on why and how sex determination mechanisms evolve unusual plasticity remains limited. Here, we summarize sex determination systems,master sex-determining genes and gene-regulatory networks among vertebrates. Recent research advancements on sex determination system transition are also introduced and discussed in some non-model animals with multiple sex determination mechanisms. This review will provide insights into the origin, transition and evolutionary adaption of different sex determination strategies in vertebrates, as well as clues for future perspectives in this field.

关键词： sex determination sex-determining gene sex chromosome sex transition sex differentiation sex control breeding

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Periodic boundary value problem for the first order functional differential equations with impulses

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Applied Mathematics(A Journal of Chinese Universities) 2009年第1期24卷 27-35页

作者： LIANG Rui-xi SHEN jian-hua Dept. of Math. Hunan Normal Univ. Hunan 410081 China Dept. of Math. Huaihua College Hunan 418008 China

This paper is concerned with the existence and approximation of solutions for a class of first order impulsive functional differential equations with periodic boundary value conditions. A new comparison result is pres... 详细信息

关键词： functional differential equation periodic boundary value problem lower and upper solution monotone iterative method

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An accelerated direct demodulation method for image reconstruction using spherical data from the hard X-ray modulation telescope

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Research in Astronomy and Astrophysics 2013年第8期13卷 991-1012页

作者： Zhuo-xi Huo jian-Feng Zhou Department of Engineering Physics and Center for Astrophysics Tsinghua University Key Laboratory of Particle & Radiation Imaging (Tsinghua University) Ministry of Education Key Laboratory of High Energy Radiation Imaging Fundamental Science for National Defense

The hard X-ray modulation telescope （HXMT） mission is mainly devoted to performing an all-sky survey at 1- 250 keV with both high sensitivity and high spatial resolution. The observed data reduction as well as the image reconstruction for HXMT can be achieved by using the direct demodulation method （DDM）. However the original DDM is too computationally expensive for multi-dimensional data with high resolution to be employed for HXMT data. We propose an accelerated direct demodulation method especially adapted for data from HXMT. Simulations are also presented to demonstrate this method.

关键词： methods data analysis methods numerical techniques image processing instrumentation high angular resolution

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Extension of Isometries Between the Unit Spheres of Normed Space E and C(Ω)

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Acta Mathematica Sinica,English Series 2006年第6期22卷 1819-1824页

作者： xi Nian FANG jian Hua WANG Department of Applied Mathematics Nanjing Audit University Nanjing 210029 P. R. China Department of Mathematics Anhui Normal University Wuhu 241000 P. R. China

In this paper, we study the extension of isometries between the unit spheres of normed space E and C（Ω）. We obtain that any surjective isometry between the unit spheres of normed space E and C（Ω） can be extended to be a linear isometry on the whole space E and give an affirmative answer to the corresponding Tingley＇s problem （where Ω be a compact metric space）.

关键词： isometric mapping isometric extension Tingley's problem

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Synthesis, Characterization and Properties of Poly(aryl amides) Containing Methoxy Substituted Phthalazinone Moiety

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Chinese Chemical Letters 2005年第10期16卷 1324-1326页

作者： Pei WANG jian Dong LIU xi Gao jian Department of Polymer Science ＆ Materials Dalian University of Technology Dalian 116012

A novel aromatic diamine, 1, 2-dihydro-2-（4-aminophenyl）-4-[3-methoxy-4-（4-aminophenoxy）]-2, 3-phthalazin-l-one （OO-DA） containing aza heterocyclic structure was synthesized from the bisphenol-like monomer in two steps and used for preparing new aromatic polyamides with high inherent viscosity of 0.89-1.03 dL.g^-1. The structures of diamine and polymers obtained were confirmed by MS, PT-IR, WAXD and ^1H-NMR. The synthesized polymers exhibited high glass transition temperature in the range of 281-307℃ and good solubility in polar solvents.

关键词： Poly(ether amides) phthalazinone solubility.

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Polarization extension yielding ultrahigh piezoelectric response in xPb(Nb2/3Ni1/3)O3-(1-x)Pb(Zr0.3Ti0.7)O3 ferroelectrics ceramics

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材料科学技术（英文版） 2024年第22期189卷 37-43页

作者： Yongxing Wei Junlong Yan Siyuan Dong Changqing jin Huawei Zhang Lin Hu Ruihua Nan Ling Gao Zhonghua Dai Zengzhe xi Zengyun jian Li jin Shaanxi Key Laboratory of Optoelectronic Functional Materials and Devices School of Materials and Chemical EngineeringXi'an Technological UniversityXi'an 710021China Shaanxi Coal Chemical Industry Technology Research Institute Co.Ltd. Xi'an 710070China Shaanxi Province Key Laboratory of Thin Films Technology & Optical Test Xi'an Technological UniversityXi'an 710021China Electronic Materials Research Laboratory Key Laboratory of the Ministry of EducationSchool of Electronic Science and EngineeringFaculty of Electronic and Information EngineeringXi'an Jiaotong UniversityXi'an 710049China

The heightened piezoelectric performance observed in most explored perovskite systems is typically at-tributed to the electric-field-induced phase transition near the morphotropic phase boundary(MPB)or polymorphic phase boundary(PPB).This study,however,unveils a distinct piezoelectric enhancement mechanism in the xPb(Nb2/3Ni1/3)O3-(1-x)Pb(Zr0.3Ti0.7)O3(PNN-PZT)system,diverging from the MPB/PPB-centered piezoelectric ***,the composition with x=0.55,positioned close to the tetragonal-pseudocubic(T-PC)phase boundary,achieves an unprecedented piezoelectric coefficient(d33)of 1264 pC/N,while retaining a tetragonal local ***,on a local scale,electric fields do not in-cite phase transitions,suggesting that the exceptional piezoelectric performance in PNN-PZT stems from polarization extension near the T-PC *** from other mechanisms,the relative permittivity significantly increases post-poling due to this particular enhancement *** dielectric behavior in poled specimens does not exhibit a conspicuous change at the ferroelectric-relaxor transition ***,both the relative permittivity and planar electromechanical coupling coefficient experience a sharp rise in the temperature range of-25 ℃ to 25 ℃.This investigation underscores the pivotal role of designing compositionally-driven T-PC phase boundaries,presenting a promising avenue for enhancing piezoelectric properties in ferroelectric ceramics.

关键词： Phase boundary Pseudocubic Polarization extension Local structure Piezoelectric effect

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Event-triggered-based self-organizing fuzzy neural network control for the municipal solid waste incineration process

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Science China(Technological Sciences) 2023年第4期66卷 1096-1109页

作者： HE HaiJun MENG xi TANG jian QIAO JunFei Faculty of Information Technology Beijing University of TechnologyBejing 100124China Beijing Laboratory of Smart Environmental Protection Beijing 100124China Beijing Key Laboratory of Computational Intelligence and Intelligent System Bejing 100124China Engineering Research Center of Intelligence Perception and Autonomous Control Ministry of Education Bejing 100124China xi'an Institute of Electromechanical Information Technology Xi'an 710065China

Due to the large uncertainty in the municipal solid waste incineration(MSWI)process,the furnace temperature of the MSWI process is difficult to control and the controller is updated *** improve the accuracy and reduce the number of controller updates,a novel event-triggered control method based correntropy self-organizing TS fuzzy neural network(ETCSTSFNN)is ***,the neurons of the rule layer are grown or pruned adaptively based on activation intensity and control error to meet the dynamic change of the actual operating ***,the performance index is designed based on the correntropy of tracking errors,and the parameters of the controller are adjusted by gradient descent ***,a fixed threshold event-triggered condition is designed to determine whether the current controller is updated or *** stability of the control system is proved based on the Lyapunov stability ***,the furnace temperature control experiments are conducted based on the actual data of a municipal solid waste incineration plant in *** experimental results show that the proposed ET-CSTSFNN controller shows a better control performance,which can reduce the number of the controller update significantly while achieving accurate furnace temperature control compared with other traditional control methods.

关键词： municipal solid waste incineration furnace temperature fuzzy control event-triggered

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Analyses for specific defects in Android applications:a survey

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Frontiers of Computer Science 2019年第6期13卷 1210-1227页

作者： Tianyong WU xi DENG Jun YAN jian ZHANG State Key Laboratory of Computer Science Institute of SoftwareChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China Technology Center of Software Engineering Institute of SoftwareChinese Academy of SciencesBeijing 100190China

Android applications(APPS)are in widespread use and have enriched our *** ensure the quality and security of the apps,many approaches have been proposed in recent years for detecting bugs and defects in the apps,of which program analysis is a major *** paper mainly makes an investigation of existing works on the analysis of Android *** summarize the purposes and proposed techniques of existing approaches,and make a taxonomy of these works,based on which we point out the trends and challenges of research in this *** our survey,we sum up four main findings:(1)program analysis in Android security field has gained particular attention in the past years,the fields of functionality and performance should also gain proper attention;the infrastructure that supports detection of various defects should be enriched to meet the industry’s need;(2)many kinds of defects result from developers’misunderstanding or misuse of the characteristics and mechanisms in Android system,thus the works that can systematically collect and formalize Android recommendations are in demand;(3)various program analysis approaches with techniques in other fields are applied in analyzing Android apps;however,they can be improved with more precise techniques to be more applicable;(4)The fragmentation and evolution of Android system blocks the usability of existing tools,which should be taken into consideration when developing new approaches.

关键词： Android apps program analysis security functionality performance

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Role of tumor-associated macrophages in common digestive system malignant tumors

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World Journal of Gastrointestinal Oncology 2023年第4期15卷 596-616页

作者： Yue Shen Jia-xi Chen Ming Li Ze xiang jian Wu Yi-jin Wang Department of Dermatology Suzhou Municipal HospitalSuzhou 215008Jiangsu ProvinceChina School of Medicine Zhejiang UniversityHangzhou 310009Zhejiang ProvinceChina Department of Pathology Suzhou Municipal HospitalSuzhou 215008Jiangsu ProvinceChina Department of Clinical Laboratory Suzhou Municipal HospitalSuzhou 215008Jiangsu ProvinceChina School of Medicine Southern University of Science and TechnologyShenzhen 518055Guangdong ProvinceChina

Many digestive system malignant tumors are characterized by high incidence and mortality *** evidence has revealed that the tumor microenvironment(TME)is involved in cancer initiation and tumor ***-associated macrophages(TAMs)are a predominant constituent of the TME,and participate in the regulation of various biological behaviors and influence the prognosis of digestive system *** can be mainly classified into the antitumor M1 phenotype and protumor M2 *** latter especially are crucial drivers of tumor invasion,growth,angiogenesis,metastasis,immunosuppression,and resistance to *** are of importance in the occurrence,development,diagnosis,prognosis,and treatment of common digestive system malignant *** this review,we summarize the role of TAMs in common digestive system malignant tumors,including esophageal,gastric,colorectal,pancreatic and liver *** TAMs promote the development of tumors,and how they act as potential therapeutic targets and their clinical applications are also described.

关键词： Tumor-associated macrophages Digestive system malignant tumors Tumor development Therapeutic targets Clinical applications

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