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Identifying timing and risk factors for early recurrence of resectable rectal cancer: A single center retrospective study

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World Journal of Gastrointestinal Surgery 2024年第9期16卷 2842-2852页

作者： Tsung-Jung Tsai Kai-Jyun Syu xuan-yuan Huang Yu Shih Liu Chang-Wei Chen Yen-Hang Wu Ching-Min Lin Yu-Yao Chang Division of Colon and Rectal Surgery Department of SurgeryChanghua Christian HospitalChanghua 50006TaiwanChina Department of Surgery Changhua Christian HospitalChanghua 50006TaiwanChina Department of Post-Baccalaureate Medicine College of MedicineNational Chung Hsing UniversityTaichung 402202TaiwanChina

BACKGROUND Colorectal cancer is a common malignancy and various methods have been introduced to decrease the possibility of *** recurrence(ER)is related to worse *** date,few observational studies have reported on the analysis of rectal ***,we reported on the timing and risk factors for the ER of resectable rectal cancer at our *** To analyze a cohort of patients with local and/or distant recurrence following the radical resection of the primary *** Data were retrospectively collected from the institutional database from March 2011 to January *** data at diagnosis,perioperative and postoperative data,and first recurrence were collected and *** was defined via receiver operating characteristic *** factors were evaluated using the Kaplan–Meier method and Cox proportional hazards *** We included 131 *** optimal cut off value of recurrence-free survival(RFS)to differentiate between ER(n=55,41.9%)and late recurrence(LR)(n=76,58.1%)was 8 *** median post-recurrence survival(PRS)of ER and LR was 1.4 mo and 2.9 mo,respectively(P=0.008)but PRS was not strongly associated with RFS(R^(2)=0.04).Risk factors included age≥70 years[hazard ratio(HR)=1.752,P=0.047],preoperative concurrent chemoradiotherapy(HR=3.683,P9 d(HR=0.441,P=0.006).CONCLUSION RFS of 8 mo was the optimal cut-off *** ER was not associated with PRS,it was still related to prognosis;thus,intense surveillance is recommended.

关键词： Rectal cancer Early recurrence Prognosis Post-recurrence survival

复杂地质条件下跨江隧道沉管段预制施工关键技术

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建筑机械 2024年第10期 92-97页

作者：刘轩源朱成中交第四航务工程局有限公司广东广州510290

车陂隧道工程中的沉管段隧道总长492m,沉管隧道具有沉管钢端壳预埋精度要求高、沉管浮运安装精度要求高、沉管基础处理等施工重难点。文章基于施工重难点,研究了跨江隧道沉管段预制施工关键技术。其中,沉管预制是整个隧道工程施工的关键... 详细信息

车陂隧道工程中的沉管段隧道总长492m,沉管隧道具有沉管钢端壳预埋精度要求高、沉管浮运安装精度要求高、沉管基础处理等施工重难点。文章基于施工重难点,研究了跨江隧道沉管段预制施工关键技术。其中,沉管预制是整个隧道工程施工的关键,为控制性工程,多方案比选确定沉管纵向分4段在南岸独立干坞内分2次预制,管段间采用柔性接头连接。管节采用施工段与后浇带分期施工的工艺,采用的模板系统中外模采用整体式滑动钢模板外模,内模设计成模板台车的形式。研究并详细阐述了沉管浮运及安装、沉管最终接头施工及沉管回填等关键技术。施工及运营结果表明,该项目提出的设计施工方法可有效提高施工质量,缩短工期。

关键词：复杂地质跨江隧道沉管预制模板工程施工技术

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沉管隧道轴线干坞坞口施工关键技术

建筑机械 2024年第9期 86-91页

作者：刘轩源朱成中交第四航务工程局有限公司广东广州510290

车陂路-新滘东路隧道工程中的沉管段隧道总长492m,共计4个长管节和1个短管节,该项目采用双轴线设计的干坞。文章首先对干坞结构进行了方案比选,确定了采用轴线内双干坞的方案,坞口结构形式为钢管桩坞门。研究并详细阐述了止水帷幕施工... 详细信息

车陂路-新滘东路隧道工程中的沉管段隧道总长492m,共计4个长管节和1个短管节,该项目采用双轴线设计的干坞。文章首先对干坞结构进行了方案比选,确定了采用轴线内双干坞的方案,坞口结构形式为钢管桩坞门。研究并详细阐述了止水帷幕施工、坞墩坞坎地下连续墙施工、坞口锁口钢管桩施工、坞门止水构造、干坞坞口拆除等关键技术,通过设置封闭PVC管、焊接钢板、外包镀锌铁皮等方案解决了混凝土绕流的问题。施工效果表明,本项目提出的施工方案可有效节省施工成本,降低施工难度,为今后同类型工程施工提供了参考经验。

关键词：沉管隧道干坞钢管桩混凝土绕流施工技术

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代谢相关脂肪性肝病中医证型分布规律及其与生辰运气的关系

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中西医结合肝病杂志 2024年第10期34卷 893-898页

作者：刘元宣茹清静襄阳市中医医院肝胆科湖北襄阳441099 浙江中医药大学附属第二医院

目的:收集代谢相关脂肪性肝病(MAFLD)患者的临床资料,分析MAFLD常见中医证型,初步探讨MAFLD中医证型分布规律与生辰运气的关系。方法:共收集MAFLD患者200例,通过问卷调查采集患者的基本资料,如性别、年龄、出生时间、身高、体重、合并... 详细信息

目的:收集代谢相关脂肪性肝病(MAFLD)患者的临床资料,分析MAFLD常见中医证型,初步探讨MAFLD中医证型分布规律与生辰运气的关系。方法:共收集MAFLD患者200例,通过问卷调查采集患者的基本资料,如性别、年龄、出生时间、身高、体重、合并疾病等,以及症状、舌脉等中医四诊资料。采用因子分析法总结出MAFLD常见中医证型,探索证型与生辰运气的关系。结果:(1)MAFLD有5种常见证型,频率由高到低依次为脾虚痰湿证、湿热蕴结证、肝郁脾虚证、脾肾亏虚证及痰瘀互结证。(2)MAFLD患者出生岁运与证型分布差异有统计学意义(P=0.001),岁运为火运、土运时证型分布差异有统计学意义(P0.05)。结论:MAFLD中医证型主要有脾虚痰湿证、湿热蕴结证、肝郁脾虚证、脾肾亏虚证及痰瘀互结证,MAFLD患者出生时岁运为火运、或少阴君火司天可能与湿热蕴结证的形成有关,岁运为土运、或太阴湿土司天可能与脾虚痰湿证的形成有关,阳明燥金司天可能与肝郁脾虚证的形成有关。

关键词：代谢相关脂肪性肝病中医证型五运六气

含新能源和电动汽车充电站并网的主动配电网无功优化模型

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电力系统及其自动化学报 2024年第2期36卷 116-125页

作者：江智军袁轩邱文浩黄礼才何伟南昌大学信息工程学院南昌330000 国网江西省电力科学研究院南昌330000

针对新能源和电动汽车充电站规模化并网引起的无功优化问题,首先建立以主动配电网运行成本和电压偏差最小,系统稳定性最优的多目标无功优化模型。其次,基于PV曲线上、下半支解的接近程度,提出一种新的静态电压稳定性指标,以改善系统电... 详细信息

针对新能源和电动汽车充电站规模化并网引起的无功优化问题,首先建立以主动配电网运行成本和电压偏差最小,系统稳定性最优的多目标无功优化模型。其次,基于PV曲线上、下半支解的接近程度,提出一种新的静态电压稳定性指标,以改善系统电压稳定性。最后,采用具有交叉反馈机制的混合优化算法对模型进行求解,并提出一种基于Tent混沌映射和自适应变异算子的改进飞蛾扑火算法提高求解效率。仿真结果表明,所提模型在降低系统运行成本,减少电压波动的同时,还能提高系统稳定性,且该混合优化算法能够快速、准确地求解混合整数的非凸、非线性优化模型。

关键词：新能源电动汽车无功优化主动配电网混合优化算法

Electromagnetic and Microwave Absorption Properties of Fe Coating on SiC with Metal Organic Chemical Vapor Reaction

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Chinese Physics Letters 2014年第4期31卷 167-169页

作者： LIU yuan LIU Xiang-xuan WANG xuan-Jun WEN Wu No. 603 Faculty Xi'an Institute of High Technology Xi'an 710025

SiC-Fe composites are prepared by metal organic chemical vapor deposition （MOCVD） using silicon carbide （SIC＇） and iron pentacarbonyl （Fe（CO）5） as the precursors. The structure and morphology analyses demonstrate that the Fe nanoparticles have been deposited on the surface of the SiC particles. In terms of reflection loss （RL）, the absorbing frequency band （AFB, the value of RL 〈 -10 dB）, and the matching thickness （tin）, SiC-Fe composites show the best performances： minimum RL of - 31.6 dB with tm= 2.0 mm at 15.1 GHz, AFB of 12.9-17.3 OHz, indicating that Fe-doped SiC by MOCVD can significantly improve the electromagnetic properties of SiC and that SiC-Fe composites could be used as an effective microwave absorption materiM.

关键词： Reaction Electromagnetic precursors

The Compactness of Commutators on the Heisenberg Group

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Acta Mathematica Sinica,English Series 2006年第2期22卷 425-430页

作者： He Ping LIU xuan yuan ZHENG LMAM School of Mathematical Sciences Peking University

We consider the commutators of the HSrmander multiplier with CMO-functions on the Heisenberg group. The result of compactness on L^P spaces is proved.

关键词： Heisenberg group Multiplier Commutator CMO Compactness

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超音速火焰喷涂WC基抗空蚀涂层研究进展

材料导报 2024年第S1期38卷 564-569页

作者：袁轩刘伟魏鑫王明明张凯张磊陈小明杭州江河机电装备工程有限公司浙江省水利水电装备表面工程技术研究重点实验室杭州310024 水利部杭州机械设计研究所水利机械及其再制造技术浙江省工程研究中心杭州310024 水利部产品质量标准研究所杭州310024

在流体环境下工作的部件,由于空化导致的侵蚀、冲蚀和腐蚀会严重影响其服役时间。WC基材料由于其高硬度和化学稳定性,在这种条件下表现出高抗降解性。目前,WC基材料主要通过超音速火焰喷涂技术沉积在组件上。涂层组分、原料粒径以及喷... 详细信息

在流体环境下工作的部件,由于空化导致的侵蚀、冲蚀和腐蚀会严重影响其服役时间。WC基材料由于其高硬度和化学稳定性,在这种条件下表现出高抗降解性。目前,WC基材料主要通过超音速火焰喷涂技术沉积在组件上。涂层组分、原料粒径以及喷涂工艺参数对这些涂层的性能有显著影响。本文综述了超音速火焰喷涂WC基涂层的抗空蚀性能与工艺因素、粉末尺寸及工况因素的关系,对超音速火焰喷涂WC基涂层抗空蚀性能研究的进一步发展进行了展望。

关键词：超音速火焰喷涂 WC 空蚀腐蚀

Synthesize dual goals:A study on China's ecological poverty alleviation system

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Journal of Integrative Agriculture 2021年第4期20卷 1042-1059页

作者： LEI Ming yuan xuan-yu YAO Xin-yan Institute on Poverty Research Peking UniversityBeijing 100871P.R.China Guanghua School of Management Peking UniversityBeijing 100871P.R.China

How to break the vicious cycle of poverty and ecological degradation is widely concerned and *** the poverty alleviation practices in China,ecological poverty alleviation(EPA)is regarded as an important way to synthesize the dual goals of poverty reduction and environmental protection and to achieve the win-win *** Chinese researchers have fruitful research achievements on EPA yet they do not recognize that EPA is not a simple combination of various policies,but a complex system involving multiple policy instruments,governmental agencies,social forces,and ***,few studies abroad illustrate EPA in *** focus more on specific components of EPA such as payment for ecosystem services while overlooking the integral concept of EPA and practices from *** on field research in Guizhou Province,China,this paper proposes a framework of EPA with an effective multi-agent and co-government system,for demonstrating the concept and practice of *** case analysis,we illustrate key elements in this system and their relationships,and how they play a vital role in pursuing win-win outcomes in environmental protection and poverty *** three dimensions of this EPA system have been *** first is to strengthen the interaction among the *** efforts should be made for establishing an efficient communication routine and a stable relationship among their *** second is to reinforce the connection between diverse elements in each policy subsystem,such as the systematization and coordination of the ecological industry development,the systematization of the links before,during,and after the relocation of ecological immigrants,*** third is to promote the interactions between the three subsystems,so that ecological enhancement,ecological compensation,and industrial development,and migration and relocation can promote each other,and ultimately promote the coordination of poverty alleviation and ecological protec

关键词： poverty alleviation ecological poverty alleviation systematic characteristics China interaction