检索结果-南通市图书馆

Hepatocellular Carcinoma and the Role of Liver Transplantation:A Review

在线全文

学校读者我要写书评

暂无评论

Journal of Clinical and Translational Hepatology 2021年第5期9卷 738-748页

作者： Haris Muhammad Aniqa Tehreem peng-sheng Ting Merve Gurakar Sean Young Li Cem Simsek Saleh A.Alqahtani Amy K.Kim Ruhail Kohli Ahmet Gurakar Department of Internal Medicine Greater Baltimore Medical CenterMDUSA Department of Internal Medicine Sinai HospitalBaltimoreMDUSA Division of Gastroenterology and Hepatology Johns Hopkins University School of MedicineBaltimoreMDUSA Department of Medicine Osler Residency ProgramJohns Hopkins University School of MedicineBaltimoreMDUSA Duke University DurhamNCUSA

Hepatocellular carcinoma(HCC)is one of the leading causes of cancer deaths worldwide and liver transplantation(LT)is the only potentially curative *** the years,Milan criteria has been used for patient *** is ongoing research in this field with introduction of new biomarkers for HCC that can help guide future ***,newer therapies for downstaging of the tumor are being implemented to prevent dropout from the transplant *** addition,combination therapies for better outcome are under ***,the concept of living-donor LT and possible use of hepatitis C virus-positive donors has been implemented as an attempt to expand the organ ***,there is a conflict of opinion between different centers regarding its efficacy and data is *** aim of this review article is to outline the various selection criteria for LT,discuss the outcomes of LT in HCC patients,and explore future directions of LT for ***,a comprehensive PubMed/MEDLINE review was *** expand our search,references of the retrieved articles were also screened for additional *** selecting the studies,the authors independently reviewed them to identify the relevant *** careful evaluation 120 studies relevant to out topic are cited in the *** tables and two figures are also *** conclusion LT for HCC has evolved over the *** the introduction of several expanded criteria beyond Milan,the introduction of bridging therapies,such as transcatheter arterial chemoembolization and radiofrequency ablation,and the approval of newer systemic therapies,it is evident that there will be more LT recipients in the *** is promising to see ongoing trials and the continuous evolution of *** studies are needed to guide the development of a pre-LT criteria that can ensure low HCC recurrence risk and is not overly stringent,clarify the role of LDLT,and determine the optimal bridgin

关键词： Hepatocellular carcinoma Liver transplantation Model for endstage liver disease Trans-arterial radioembolization Locoregional therapies

基于Contourlet变换和IPCNN的融合算法及其在可见光与红外线图像融合中的应用

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

红外与毫米波学报 2007年第3期26卷 217-221页

作者：刘盛鹏方勇上海大学通信与信息工程学院上海200072

针对多传感器图像融合这一图像处理领域中的研究热点问题,提出了一种基于Contourlet变换和IPCNN的融合方法.该融合方法首先利用Contourlet对输入图像进行多尺度、多方向稀疏分解,准确地捕获图像中的二维或高维奇异信息,然后在Contourle... 详细信息

针对多传感器图像融合这一图像处理领域中的研究热点问题,提出了一种基于Contourlet变换和IPCNN的融合方法.该融合方法首先利用Contourlet对输入图像进行多尺度、多方向稀疏分解,准确地捕获图像中的二维或高维奇异信息,然后在Contourlet域充分利用IPCNN的同步激发特性,进行基于IPCNN的融合策略设计,提高了融合效果.仿真结果表明,该算法具有很好的融合效果.

关键词：图像融合 Contoudet变换脉冲耦合神经网络红外线图像

在线全文

学校读者我要写书评

暂无评论

对我国收入分配公平理论依据的探讨

学术界 2009年第3期 153-157页

作者：彭升中南大学政治学与行政管理学院湖南长沙410083

我国收入分配公平的理论依据主要体现在:一是我国基本国情是收入分配公平理论的现实基础;二是传统的公平观念是收入分配公平理论的历史基础;三是公平与效率辩证统一是分配公平理论的重要依据;四是共同富裕是分配公平理论的价值目标;五... 详细信息

我国收入分配公平的理论依据主要体现在:一是我国基本国情是收入分配公平理论的现实基础;二是传统的公平观念是收入分配公平理论的历史基础;三是公平与效率辩证统一是分配公平理论的重要依据;四是共同富裕是分配公平理论的价值目标;五是科学发展观是分配公平理论的指导原则。

关键词：分配公平理论依据科学发展观

Ultrafast photoionization of ions and molecules by orthogonally polarized intense laser pulses: Effects of the time delay

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2021年第1期30卷 207-214页

作者： Si-Qi Zhang Zhi-Jie Yang Zhi-Xian Lei Wei Feng sheng-peng Zhou Kai-Jun Yuan Xue-Shen Liu Jing Guo Institute of Atomic and Molecular Physics Jilin UniversityChangchun 130012China

We present the photoelectron momentum distributions(PMDs) and the photoelectron angular distributions(PADs) of He+ ions, aligned H2+ molecules and N2 molecules by intense orthogonally polarized laser pulses. Simulations are performed by numerically solving the corresponding two-dimensional time-dependent Schr?dinger equations(TDSEs) within the single-electron approximation frame. Photoelectron momentum distributions and photoelectron angular distributions present different patterns with the time delays Td, illustrating the dependences of the PMDs and PADs on the time delays by orthogonally polarized laser pulses. The evolution of the electron wavepackets can be employed to describe the intensity of the PADs from the TDSE simulations for N2 molecules.

关键词： photoelectron momentum distributions photoelectron angular distributions intense orthogonally polarized laser pulses ultrafast photoionization model

在线全文

学校读者我要写书评

暂无评论

论文明交流互鉴的载体与原则

学习与探索 2023年第5期 11-16页

作者：戴圣鹏华中师范大学马克思主义学院武汉430079

文明交流互鉴是文明发展的本质要求。文明要实现自身的长久与健康发展,就需要与其他文明进行交流互鉴。任何在封闭环境中成长的文明是很难获得长久发展、健康发展的。文明因多样而交流,因交流而互鉴,因互鉴而发展、丰富。推动文明交流互... 详细信息

文明交流互鉴是文明发展的本质要求。文明要实现自身的长久与健康发展,就需要与其他文明进行交流互鉴。任何在封闭环境中成长的文明是很难获得长久发展、健康发展的。文明因多样而交流,因交流而互鉴,因互鉴而发展、丰富。推动文明交流互鉴,促进人类各种文明之花竞相绽放,是人类文明繁荣发展的必然要求。对于文明交流互鉴而言,需要依靠一定的载体来进行。在现实的文明交流互鉴中,人、商品、文化、婚姻、国际交往等,都是重要的载体,其中人是最好的载体。离开这些载体,文明之间的交流互鉴是无法进行的。可以说,没有文明交流互鉴的载体,就不会有不同文明之间的交流互鉴。无规矩不成方圆,在文明交流互鉴中,遵循一定原则是文明交流互鉴得以有序而友好进行的前提与动力。在文明交流互鉴中,开放原则、包容原则、平等原则、创新原则,都是十分重要的原则。

关键词：文明文明发展交流互鉴载体

维普期刊数据库博看期刊

Formation of Li Salts from Natural Brines during Isothermal Evaporation at 25℃

在线全文

学校读者我要写书评

暂无评论

盐湖研究 2019年第2期27卷 1-10页

作者： SONG peng-sheng DONG Ya-ping LI Wu Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources Qinghai Institute of Salt LakesChinese Academy of SciencesXining810008China Qinghai Engineerning and Technology Research Center of Salt Lake Resources Development Xining810008China Key Laboratory of Salt Lake Resources Chemistry of Qinghai Province Xining810008China

Li brines are the primary resources for Li salt *** is necessary to concentrate Li due to its low level of concentration in raw *** salt sequences during the evaporation of Li brines,especially the behavior of Li salts,represent key data for solar ***,chemists cannot use any phase diagram to estimate Li salt sequences during evaporation at 25℃.The thermodynamic model proposed by us in 2003 represents the only tool for the prediction of equilibrium conditions during the evaporation of solutions containing Li^+,Na^+,K^+,Mg^2+/Cl^-,SO4^2-,and-H2O components at 25℃.In this paper,the predicted salt sequences of 20 brines are *** results indicate that (1) the first crystallized Li salt during evaporation of Li brine varies in brine composition;(2) lithium sulfate is crystallized in many cases initially for brines of magnesium sulfate subtype,while Db4 (Li2SO4 ·K2SO4 ) or Db3 (2Li2SO4 ·Na2SO4 ·K2SO4 ) appears first for sodium sulfate and magnesium sulfate subtypes with lower Mg/Li composition,and the final eutectic point is H+LiC+Lc+Ls+Car;(3) the final eutectic point is H+LiC+Lc+Car for brines of chloride type;and (4) Li content corresponding to the first crystallized Li salt is in the range of 0.43%-1%.These findings enhance our knowledge of Li chemistry and provide insights into solar pond technology of the Li-brine process.

关键词： Li-brine Forrmation of Li salts Isothermal evaporation of brine Salt sequences from brine Thermodynamic model for Li^+,Na^+,K^+,Mg^2+/Cl^-,SO4^2--H2O system

Coherent control of fragmentation of methyl iodide by shaped femtosecond pulse train

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2019年第9期28卷 157-163页

作者： Qiu-Nan Tong De-Hou Fei Zhen-Zhong Lian Hong-Xia Qi sheng-peng Zhou Si-Zuo Luo Zhou Chen Zhan Hu Institute of Atomic and Molecular Physics Jilin UniversityChangchun 130012China Advanced Light Field and Modern Medical Treatment Science and Technology Innovation Center of Jilin Province Jilin UniversityChangchun 130012China

Coherent control of fragmentation of CH_3I using shaped femtosecond pulse train is *** dissociation processes can be modulated by changing the separation of the shaped pulse train, and the yield of I^+under the irradiation of the optimal pulse is significantly increased compared with that using the transform-limited *** discuss the control mechanism of dissociation processes with coherent interference in time domain.A three-pulse control model is proposed to explain the counterintuitive experimental results.

关键词： coherent control fragmentation shaped pulse

在线全文

学校读者我要写书评

暂无评论

动脉栓塞联合CT引导热消融治疗肝血管瘤

介入放射学杂志 2015年第11期24卷 996-999页

作者：生守鹏郑加生首都医科大学附属北京佑安医院肿瘤微创介入中心北京100069

目的评价经动脉栓塞（TAE）联合CT引导热消融（射频消融/微波消融,RFA/MWA）治疗肝血管瘤的疗效及安全性。方法回顾分析2008年11月至2013年7月TAE联合CT引导热消融治疗的肝血管瘤患者26例,其中单发14例,多发12例,有症状患者8例。病灶... 详细信息

目的评价经动脉栓塞（TAE）联合CT引导热消融（射频消融/微波消融,RFA/MWA）治疗肝血管瘤的疗效及安全性。方法回顾分析2008年11月至2013年7月TAE联合CT引导热消融治疗的肝血管瘤患者26例,其中单发14例,多发12例,有症状患者8例。病灶长径5.0-13.0 cm,平均（7.6±2.4）cm。先行TAE治疗,再行CT引导下RFA/MWA治疗,观察完全消融率、病灶缩小程度、手术并发症。结果 26例患者中行RFA治疗9例,MWA 17例,共消融病灶27个,行消融治疗28次。23个病灶实现了完全消融,病灶的完全消融率为85.2%（23/27）,病灶缩小12.9%-66.3%,平均（31.0±19.6）%。有症状患者经治疗后症状全部消失。消融治疗后出现肝包膜下出血1例、血红蛋白尿1例、胆汁瘤1例,经治疗后好转,总体并发症发生率为11.5%,无严重并发症及死亡患者。结论 TAE联合CT引导热消融治疗肝血管瘤疗效确切,无严重并发症及死亡患者,可作为肝血管瘤治疗的选择之一。

关键词：肝血管瘤栓塞消融

Technology of Arc-added Glow-discharge Brazing and Brazing of Ceramic to Metal

在线全文

学校读者我要写书评

暂无评论

厦门大学学报(自然科学版) 2002年第S1期 83-84页

作者： WANG Wen-xian, ZHANG Yong-qing, ZHAO peng-sheng (College of Material Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China)

A new brazing method, arc-added glow-discharge br az ing (AGB), was studied in respects of mechanism, technology, application and equ ipment in which the workpiece is directly heated by both ion bombardment of glow discharge and radiation heat of arc discharge. The AGB equipment was manufactured by Taiyuan University of Technology and i t mainly consists of: (1) brazing furnace; (2) vacuum system; (3) power closet; (4) measuring and control system. The heating cycle of brazing was composed of heating speed, brazing temperatu re, heat-shielding time, and cooling speed and determined by brazing parameter such as limit degree of vacuum (Va), work pressure (P), glow voltage ( V), arc current (I), P-V match and brazing time (t). The effect o f brazing parameter on the quality of brazing joints was analyzed and discussed. The heating cycle of brazing was designed according to the material and structu re of the workpiece and the result of their optimization were controlled by a FX 2 industrial PC computer. Many metals or alien metals can be brazed by means of AGB method like steel, cop per, aluminum and stainless steel. However, the dominance of AGB is that non-me tals such as ceramic are brazed in AGB method. In the process of AGB, it is possible to deposit active active metallic elements on ceramic surface by glow discharge metallizing with arc source in which the s pattering deposition goes on with a high speed and can occur at a comparatively low temperature. Si 3N 4 ceramics have been put to test by using the above pro cess. Take the T-shaped joint brazing of Si 3N 4 to 45 # steel as an example (Si 3N 4 is of 13×13×7 mm in vertical position and 45 # steel is 1 mm thic k in horizontal position). After brazing, the compositions at different position s of the brazing fillet have been examined by EDX. EPMA analysis showed the exis tence of TiN on ceramic surface, which was produced by the following reaction: S i 3N 4+4Ti = 4TiN+3Si. TiN is a compound similar to metal, whi

关键词： brazing arc-added glow-discharge brazing tech nology ceramic