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A simple scoring system to predict early recurrence of Bismuth–Corlette type IV perihilar cholangiocarcinoma

Gastroenterology Report 2019年第5期7卷 345-353,I0002页

作者： Ding-Zhong Peng jiong Lu Bei li Hai-Jie Hu Xi-Wen Ye Xian-Ze Xiong Nan-sheng Cheng Department of biliary surgery West China Hospital of Sichuan UniversityChengduSichuanP.R.China

Background:Early recurrence has been reported to be predictive of a poor prognosis for patients with perihilar cholangiocarcinoma(pCCA)after *** objective of our study was to construct a useful scoring system to predict early recurrence for Bismuth–Corlette type IV pCCA patients in clinic and to investigate the value of early recurrence in directing post-operative surveillance and adjuvant ***:In total,244 patients who underwent radical resection for type IV pCCA were *** on clinicopathological characteristics,perioperative details and survival outcomes were *** curves were generated using the Kaplan–Meier *** and multivariate logistic-regression models were used to identify factors associated with early ***:Twenty-one months was defined as the cutoff point to distinguish between early and late *** and multivariate analysis revealed that CA19-9 level>200 U/mL,R1 resection margin,higher N category and positive lymphovascular invasion were independent predictors of early *** scoring system was constructed *** early-recurrence rates of patients with scores of 0,1,2,3,4,and 5 were 23.9%,38.7%,60.0%,78.6%,83.4%,and 100%,*** therapy was significantly associated with higher overall survival rate for patients with early recurrence,but not for those with late *** in the early-recurrence group with scores2 had better prognoses after adjuvant ***:A simple scoring system using CA19-9 level,N category,resection margin and lymphovascular invasion status could predict early recurrence,and thus might direct post-operative surveillance and adjuvant therapy for patients with type IV pCCA.

关键词： early recurrence Bismuth–Corlette classification perihilar cholangiocarcinoma

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有序介孔硅材料的微量碳层修饰及VOCs吸附性能

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中国环境科学 2024年第10期44卷 5388-5396页

作者：柯权力熊烨栋卢梅吴天浩黄康康闵炯金传敏崔国凯赵博卢晗锋浙江工业大学化学工程学院浙江杭州310000 浙江省环境科技有限公司浙江杭州310000 浙江悦胜环境科技有限公司浙江湖州313300 浙江德创环保科技股份有限公司浙江绍兴312000

以孔道规整的介孔分子筛SBA-15和MCM-41作为硅基材料前驱体,以蔗糖作为生物质碳源,通过化学刻蚀方法将生物质碳引入两种介孔分子筛孔道中,从而制备获得碳-介孔分子筛复合材料.通过对蔗糖浓度条件的优化,可以获得比表面积、碳含量和甲苯... 详细信息

以孔道规整的介孔分子筛SBA-15和MCM-41作为硅基材料前驱体,以蔗糖作为生物质碳源,通过化学刻蚀方法将生物质碳引入两种介孔分子筛孔道中,从而制备获得碳-介孔分子筛复合材料.通过对蔗糖浓度条件的优化,可以获得比表面积、碳含量和甲苯吸附性能最佳的碳-介孔分子筛复合材料.经由TEM-EDS图谱可以证明,碳元素均匀存在于上述两种介孔硅材料的孔道.进一步通过孔径分析,发现碳层修饰后的介孔分子筛(C@MCM和C@SBA)中微孔比例显著提升,因而其甲苯吸附容量明显高于其对应的介孔分子筛(MCM-41和SBA-15).其中,C@SBA在5次吸脱附循环中容量基本保持不变,循环吸附性能相比C@MCM更为优越.此外,碳层修饰后的介孔分子筛具有良好的耐水性,其吸附容量不会随相对湿度的提高而大幅降低.最后,上述复合材料对其他含氧VOCs物种也具有较好的吸附性能,但对甲苯等弱极性分子的吸附效果更显著.

关键词：介孔分子筛孔道修饰碳硅复合材料 VOCs吸附

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Computational Performance of the High-Resolution Atmospheric Model FAMIL

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Atmospheric and Oceanic science Letters 2012年第5期5卷 355-359页

作者： ZHOU lin-jiong liU Yi-Min BAO qing YU Hai-yang WU Guo-Xiong The State Key Laboratory of Numerical Modeling for Atmospheric sciences and Geophysical Fluid Dynamics (LASG) Institute of Atmospheric Physics (IAP) Chinese Aeademy of Sciences Beo'ing 100029 China Graduate university of Chinese Academy of sciences Beijing 100049 China

This paper describes the model speed and model In/Out （I/O） efficiency of the high-resolution atmospheric general circulation model FAMIL （Finite- volume Atmospheric Model of IAP/LASG） at the National Supercomputer Center in Tianjin, china, on its Tianhe-lA supercomputer platform. A series of three- model-day simulations were carried out with standard Aqua Planet Experiment （APE） designed within FAMIL to obtain the time stamp for the calculation of model speed, simulation cost, and model 1/O efficiency. The results of the simulation demonstrate that FAMIL has remarkable scalability below 3456 and 6144 cores, and the lowest simulation costs are 1536 and 3456 cores for 12.5 km and 6.25 krn resolutions, respectively. Furthermore, FAMIL has excellent I/O scalability and an efficiency of more than 80% on 6 I/Os and more than 99% on 1536 I/Os.

关键词： FAMIL high-resolution computational per-formance scalability efficiency

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放射状楔形槽气浮支承静态性能分析

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润滑与密封 2024年第4期49卷 27-34页

作者：尹先雄于普良李世泽鲁炅徐珲胡回武汉科技大学冶金装备及控制教育部重点实验室湖北武汉430081 武汉科技大学机械传动与制造工程湖北省重点实验室湖北武汉430081 武汉科技大学机械精密制造研究院湖北武汉430081

为提升小孔节流气浮支承的静态性能,设计一种放射状楔形槽气浮支承,该楔形槽呈放射状,其周向截面、径向截面和轴向截面分别为扇形、矩形和梯形。建立放射状楔形槽气浮支承的CFD模型,分析楔形槽结构参数对气浮支承静态性能的影响规律。... 详细信息

为提升小孔节流气浮支承的静态性能,设计一种放射状楔形槽气浮支承,该楔形槽呈放射状,其周向截面、径向截面和轴向截面分别为扇形、矩形和梯形。建立放射状楔形槽气浮支承的CFD模型,分析楔形槽结构参数对气浮支承静态性能的影响规律。结果表明:采用放射状楔形槽能够改善气浮支承的气膜压力分布,并提升其承载力和刚度;气浮支承承载力随楔形槽放射角度、入口高度和楔形角的增加逐渐增大,随楔形槽半径增加先升高后降低;气浮支承刚度随楔形槽放射半径、角度、入口高度和楔形角的增加逐渐提高。实验结果与预测结果吻合较好,验证了模型的可行性和准确性。

关键词：放射状楔形槽气浮支承承载力刚度静态性能

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基于DIC古建筑青砖受冻融循环作用的损伤演化

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建筑材料学报 2024年第8期27卷 764-772页

作者：郝贠洪高炯吴日根宣姣羽何晓雁内蒙古工业大学土木工程学院内蒙古呼和浩特010051 内蒙古工业大学理学院内蒙古呼和浩特010051 内蒙古工业大学内蒙古自治区建筑检测鉴定与安全评估工程技术研究中心内蒙古呼和浩特010051 内蒙古工业大学内蒙古自治区土木工程结构与力学重点实验室内蒙古呼和浩特010051

以内蒙古隆盛庄古建筑青砖砌体为研究对象,通过数字图像相关(DIC)技术,研究古建筑青砖在冻融循环作用下的损伤破坏规律,采用双因子——损伤程度因子和损伤局部化因子来表征古建筑青砖的单轴压缩损伤过程,并根据双因子损伤演化曲线建立... 详细信息

以内蒙古隆盛庄古建筑青砖砌体为研究对象,通过数字图像相关(DIC)技术,研究古建筑青砖在冻融循环作用下的损伤破坏规律,采用双因子——损伤程度因子和损伤局部化因子来表征古建筑青砖的单轴压缩损伤过程,并根据双因子损伤演化曲线建立了不同冻融循环次数下的损伤演化模型.结果表明:古建筑青砖在单轴压缩下的破坏过程可分为初始损伤闭合阶段、线弹性损伤阶段、弹塑性损伤阶段和塑性损伤阶段4个阶段;随着冻融循环次数的增加,青砖表面应变集中程度增大,使其承载能力降低;冻融循环会缩短双因子曲线的线弹性阶段,同时利用双因子建立的损伤演化模型能有效反映冻融循环作用下古建筑青砖材料的损伤演化过程.

关键词：古建筑青砖冻融循环数字图像相关应变云图损伤演化

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Mathematic Model of SEN Clogging During Continuous Casting of Steel

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Journal of Iron and Steel Research International 2010年第8期17卷 6-9页

作者： WU Su-zhou ZHANG jiong-ming li Zhi-zheng School of Metallurgical and Ecological Engineering University of Science and Technology Beijing Beijing 100083 China

The SEN clogging is a serious problem for continuous casting operation and steel *** kinetics mathematic model of SEN clogging during steel continuous casting is *** fluid flow and inclusions motion are calculated by means of mathematic *** of diameters of inclusions,roughness of nozzle,diameter of nozzle and casting speed on the entrapment probability are calculated and *** result shows that inclusions are more easily to attach to the nozzle by the following condition：smaller inclusion size,larger roughness of the wall and the smaller bulk velocity in the nozzle.

关键词： nozzle clogging mathematic model inclusion motion

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Vascular dementia has the highest hospitalisation rate in china:a nationwide hospital information system study

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Stroke & Vascular Neurology 2023年第1期8卷 59-68页

作者： Yue Wang Shiping li Qi Zhou Yongjun Wang jiong Shi Department of Neurology Beijing Tiantan HospitalBeijingChina National Clinical Research Center for Neurological Diseases Beijing Tiantan HospitalBeijingChina Advanced Innovation Center for Human Brain Protection Capital Medical UniversityBeijingChina

Background Although vascular dementia(VaD)is not uncommon in the hospital,most studies on VaD are community *** study on VaD is the first to use a national hospital information system(HIS)in *** This study was a hospital population-based cohort study,and data were acquired from the Hospital Quality Monitoring System,a Chinese national database that covers 1531 tertiary hospitals in *** medical records in the HIS included demographic information,diagnoses,procedures,expenses,*** was diagnosed by hospital attending physicians and identified by the International Classification of Diseases(ICD)10 code(F01.0-F01.9).Results 1259(82.23%)tertiary hospitals were included in this study,and 274230 hospitalisation records of 123700 VaD patients from 2016 to 2018 were identified for ***(51.27%)was the most common type of dementia in hospitalised *** age-adjusted and sex-adjusted hospital incidence of VaD was estimated to be 2.97 per 100000 person-years(95%CI 2.92 to 3.02).The mean age of VaD patients admitted to hospitals was 74.13±10.88,with more male(61.0%)*** main comorbidities were hypertension(67.2%),heart disease(63.6%)and cerebral infarction(55.5%).The mortality rate of VaD in hospital was 28.91‰(95%CI 28.0 to 29.9)between 2016 and *** top 1 cause of death due to VaD was pneumonia and other respiratory *** VaD is the most common form of dementia in hospitalised *** casts huge burdens on affected patients and their *** risk factors are prevalent in VaD *** these factors is essential to improve patient *** leading causes of death by VaD are pneumonia and other respiratory *** care and the management of respiratory illness are critical for VaD care in the hospital.

关键词： Vascular admitted nationwide

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SPURIOUS NUMERICAL SOLUTIONS OF DELAY DIFFERENTIAL EQUATIONS

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Journal of Computational mathematics 2006年第2期24卷 181-192页

作者： Hong-jiong Tian li-qiang Fan Yuan-ying Zhang Jia-xiang Xiang Department of mathematics Shanghai Normal University Division of Computational Science E-Institute of Shanghai Universities Shanghai 200234 China Department of mathematics Shanghai Normal University Shanghai 200234 China

This paper deals with the relationship between asymptotic behavior of the numerical solution and that of the true solution itself for fixed step-sizes. The numerical solution is viewed as a dynamical system in which the step-size acts as a parameter. We present a unified approach to look for bifurcations from the steady solutions into spurious solutions as step-size varies.

关键词： Spurious solution Asymptotic behavior Delay differential equation.

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Janus Poly(Vinylidene Fluoride)Membranes with Penetrative Pores for Photothermal Desalination

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Research 2020年第1期2020卷 534-544页

作者： Hao-Hao Yu lin-jiong Yan Ye-Cheng Shen Si-Yu Chen Hao-Nan li Jing yang Zhi-Kang Xu MOE Key Laboratory of Macromolecular Synthesis and Functionalization and Key Laboratory of Adsorption and Separation Materials&Technologies of Zhejiang ProvinceDepartment of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027China

Solar-driven desalination has been considered as a promising technology for producing clean water through an abundant and pollution-free energy *** is a critical challenge to reasonably design the porous morphology and the thermal management of photothermal membranes for enabling efficient energy conversion and water *** this work,a Janus poly(vinylidene fluoride)membrane was fabricated in combination of penetrative pore structure,asymmetric surface wettability with proper thermal management for high-efficiency solar *** open and directly penetrative pores achieved by the two-dimensional solvent freezing strategy are considered to provide direct pathways for water and vapor *** unique feature of hydrophobic upper layer/hydrophilic lower layer enables the photothermal membranes to self-float on the water surface and rapidly pump water from the bulk to the *** resulting Janus membrane exhibits a satisfactory light absorbance as high as 97%and a photothermal conversion efficiency of 62.8%under one-sun irradiation in a direct contact *** solar-to-vapor efficiency rises up to 90.2%with the assistance of a thermal insulator adopted *** the Janus membrane and the composite setup are able to work efficiently with a high stability in seawater desalination,and the concentration of ion in condensed water is reduced to below 1 ***,Janus membranes with directly penetrative pores and photothermal surfaces shine a light on the development of high-performance solar evaporators for the practical application in solar seawater desalination.

关键词： composite thermal pores

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包被γ-氨基丁酸对断奶应激期羔羊血清生化指标、营养物质表观消化率及瘤胃发酵功能的影响

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动物营养学报 2024年第7期36卷 4508-4520页

作者：唐亚楠李炯魏赜赵苗苗刘月琴张英杰段春辉河北农业大学动物科技学院保定071000

本试验旨在研究饲粮中添加包被γ-氨基丁酸(GABA)对断奶应激期羔羊血清生化指标、营养物质表观消化率及瘤胃发酵功能的影响。选择48只健康、体重[(26.14±1.40)kg]相近的45日龄湖羊羔羊,随机分为4组,每组4个重复,每个重复3只羊。对照组(... 详细信息

本试验旨在研究饲粮中添加包被γ-氨基丁酸(GABA)对断奶应激期羔羊血清生化指标、营养物质表观消化率及瘤胃发酵功能的影响。选择48只健康、体重[(26.14±1.40)kg]相近的45日龄湖羊羔羊,随机分为4组,每组4个重复,每个重复3只羊。对照组(CON组)饲喂基础饲粮,试验Ⅰ、Ⅱ、Ⅲ组分别在基础饲粮中添加100、140、180 mg/d包被GABA。羔羊48日龄断奶(记为第1天),在第-3、1、3、7天采集血液测定相关指标,第-3、1、3、7、14天采集瘤胃液,第14天进行消化代谢试验。试验期为21 d。结果表明:1)与对照组相比,添加包被GABA显著降低了羔羊血清中干扰素-γ(IFN-γ)、白细胞介素-6(IL-6)、肿瘤坏死因子-α(TNF-α)含量(P0.05);Ⅱ组酸性洗涤纤维(ADF)表观消化率显著高于Ⅰ组(P0.05);时间显著影响了羔羊瘤胃pH,氨态氮(NH 3-N)、总挥发性脂肪酸(TVFA)、乙酸、丙酸含量及乙丙比(P<0.05),pH先增加后降低,NH 3-N、TVFA、乙酸、丙酸含量先增加后短暂降低又增加,乙丙比逐渐降低。综上所述,在饲粮中添加包被GABA可降低断奶应激期内羔羊血清炎症因子含量,缓解肠道应激损伤,改善瘤胃发酵功能,提高营养物质表观消化率。在本试验条件下,包被GABA的最佳添加量为140 mg/d。

关键词：羔羊断奶免疫肠道消化率瘤胃

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