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Approximate Generalized Conditional Symmetries and Solutions for Nonlinear Filtration Equation with a Small Parameter

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Wuhan University Journal of Natural Sciences 2015年第6期20卷 461-464页

作者： li Hong li jina WANG Yanyan ZUO Suli College of Science Zhongyuan University of Technology School of Mathematics Northwest University

The approximate generalized conditional symmetries of nonlinear filtration equation with a small parameter are studied. The initial-value problem of the equation can be transformed to perturbed Cauchy problem of perturbed first-order ordinary dif- ferential equations systems and approximate solutions are obtained by using these symmetries.

关键词： nonlinear filtration equation approximate solution initial-value problem

Invariant Subspace and Exact Solutions to the Generalized Kudryashov-Sinelshchikov Equation

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Journal of Partial Differential Equations 2023年第3期36卷 286-304页

作者： li jina QU Gaizhu ZHANG Jianlin JI Xuehui College of Science Zhongyuan University of TechnologyZhengzhou 450007China School of Mathematics and Statistics Weinan Normal UniversityWeinan 714099China

In this research,invariant subspaces and exact solutions for the governing equation are obtained through the invariant subspace method,and the generalized second-order Kudryashov-Sinelshchikov equation is used to describe pressure waves in a liquid with *** governing equations are classified and transformed into a system of ordinary differential equations,and the exact solutions of the classified equation are obtained by solving the system of ordinary differential *** method gives logarithmic,polynomial,exponential,and trigonometric solutions for *** primary accomplishments of this work are displaying how to obtain the exact solutions of the classified equations and giving the stability analysis of reduced ordinarydifferential equations.

关键词： Invariant subspace method exact solution Kudryashov-Sinelshchikov equation sta-bility analysis

Natural Selection on Human Y Chromosomes

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Journal of Genetics and Genomics 2014年第2期41卷 47-52页

作者： Chuan-Chao Wang li jina Hui li State Key Laboratory of Genetic Engineering and MOE Key Laboratory of Contemporary Anthropology School of Life SciencesFudan University CAS-MPG Partner Institute for Computational Biology Shanghai Institutes for Biological SciencesChinese Academy of Sciences

In the field of anthropology, the uniparerttally inherited Y chromosome has long been used to trace the paternal lineage of the populations and to understand differences in migration and population genetics between males and females, with additional advantages of small effective population size, suf- ficient markers, and population-specific haplotype distribution （Jobling and Tyler-Smith, 1995; Jin and Su, 2000; Underhill et al., 2000）. Many such population studies have rested on the assumption that all the Y chromosome markers in the non- recombination regions are selectively neutral （Jobling and Tyler-Smith, 2003）.

关键词： mtDNA Natural Selection on Human Y Chromosomes

Fabrication linalool-functionalized hollow mesoporous silica spheres nanoparticles for efficiently enhance bactericidal activity

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Chinese Chemical Letters 2020年第8期31卷 2137-2141页

作者： li Jin Xun liu Changhao Bian Jie Sheng Yishan Song Yongheng Zhu College of Food Science and Technology Shanghai Ocean UniversityShanghai 201306China College of Food Science and Technology Laboratory of Quality&Safety Risk Assessment for Aquatic Products on Storage and Preservation(Shanghai)Ministry of Agriculture and Shanghai Engineering Research Center of Aquatic-Product Processing&PreservationShanghai Ocean UniversityShanghai 201306China

To develop a novel food preservation technology for efficiently enhance bactericidal activity in a long term,hollow mesoporous silica spheres(HMSS)with regular nanostructures were applied to encapsulate natural organic antimicrobial *** chemical structures,morphologies and thermal stabilities of linalool,HMSS and linalool-functionalized hollow mesoporous silica spheres(L-HMSS)nanoparticles were evaluated by polarimeter,field emission scanning electron microscope(FE-SEM),transmission electron microscope(TEM),fourier transform infrared(FT-IR),thermal gravimetric analyzer(TGA),nitrogen adsorption-desorption,zeta potential and small angle X-ray diffraction(SXRD).The results show that the linalool was successfully introduced into the cavities of HMSS,and the inorganic host exhibited a high loading capacity of about 1500 mg/*** addition,after 48 h of incubatio n,the minimum bactericidal concentrations(MBC)of L-HMSS against Escherichia coli(***),Salmonella enterica(***)and Staphylococcus aureus(***),listeria monocytogenes(***)were decreased to be 4(linaloolfunctionalized hollow mesoporous spheres could efficiently improve the bactericidal activities of the organic ***,SEM images clearly showed that L-HMSS indeed had an extremely inhibitory effect against gram-negative(***)and gram-positive(***)by breaking the structure of the cell *** research is of great significance in the application of linalool in nano-delivery system as well as food industry.

关键词： linalool Hollow mesoporous silica spheres Encapsulation Bactericidal activity Antimicrobial mechanism

初中英语“目标—评价—教学一致性”的实现路径

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教学与管理 2019年第22期 61-63页

作者：李静山东省乳山市诸往镇中心学校山东乳山264500

"目标—评价—教学一致性",即基于课程标准和真实学情确定具体的教学目标、基于具体的教学目标设计具体的评价任务、基于具体的教学目标和具体的评价任务设计具体的教学环节、教学任务及教学策略等.以鲁教版初中《英语》七年级下册Unit ... 详细信息

"目标—评价—教学一致性",即基于课程标准和真实学情确定具体的教学目标、基于具体的教学目标设计具体的评价任务、基于具体的教学目标和具体的评价任务设计具体的教学环节、教学任务及教学策略等.以鲁教版初中《英语》七年级下册Unit 8 Section B 2a阅读语篇的教学设计为例,探讨初中英语"目标—评价—教学一致性"思想的实现路径.

关键词：目标评价教学一致性初中英语阅读教学

TiO_2-coated SnO_2 hollow spheres as anode materials for lithium ion batteries

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Rare Metals 2011年第6期30卷 589-594页

作者： YI Jin li Xiaoping HU Shejun li Weishan ZENG Ronghua FU Zhao CHEN Lang School of Chemistry and Environment South China Normal University Guangzhou 510006 China Key Laboratory of Electrochemtcal Technology on Energy Storage and Power Generation of Guangdong Higher Education Institutes Guangzhou 510006 China Engineering Research Center of Materials and Technology for Electrochemical Energy Storage Ministry of Education Guangzhou 510006 China

TiO2-coated SnO2 （TCS） hollow spheres, which are new anode materials for lithium ion （li-ion） batteries, were prepared and characterized with X-ray diffraction （XRD）, scanning electron microscopy （SEM）, transmission electron microscopy （TEM）, cyclic voltammetry （CV）, and galvanostatic charge/discharge tests. The results obtained from XRD, SEM, and TEM show that TiO2 can be uniforrrdy coated on the surface of SnO2 hollow spheres with the assistance of anionic surfactant. The cyclic voltammograms indicate that both TiO2 and SnO2 exhibit the activity for li-ion storage. The charge/discharge tests show that the prepared TCS hollow spheres have a higher reversible coulomb efficiency and a better cycling stability than the uncoated SnO2 hollow spheres.

关键词： TiO2-coated SnO2 hollow spheres anode lithium ion batteries

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嘉定区内11号线乘客接驳方式研究

都市快轨交通 2014年第1期27卷 58-62页

作者：李积娜张缨陈小鸿青岛市市政工程设计研究院有限责任公司山东青岛266061 同济大学交通运输工程学院上海201804

以上海11号线嘉定区内轨道交通站点客流调查为基础,分析乘客接驳方式及其接驳条件、费用、时间等现状,运用软件对接驳方式的影响因素进行判断,旨在为充分发挥轨交优势,完善市域轨道线接驳交通,推进城乡公交一体化建设提供参考。

关键词：城市轨道交通接驳方式影响因素市域线相关性分析

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宫颈癌复发的影响因素及风险预测模型

中南大学学报（医学版） 2022年第12期47卷 1711-1720页

作者：李吉娜罗家有刘高明颜仕鹏中南大学湘雅公共卫生学院儿少卫生与妇幼保健学系长沙410008 湖南省肿瘤医院中南大学湘雅医学院附属肿瘤医院护理部长沙410013 湖南省肿瘤防治研究办公室长沙410006

目的:宫颈癌是全球女性生殖系统中最常见的恶性肿瘤,治疗后的宫颈癌患者复发率高,严重威胁妇女的生命健康。目前尚未见有关宫颈癌复发风险预测的研究报道。本研究基于宫颈癌复发的影响因素,建立宫颈癌复发风险预测模型,为宫颈癌复发防... 详细信息

目的:宫颈癌是全球女性生殖系统中最常见的恶性肿瘤,治疗后的宫颈癌患者复发率高,严重威胁妇女的生命健康。目前尚未见有关宫颈癌复发风险预测的研究报道。本研究基于宫颈癌复发的影响因素,建立宫颈癌复发风险预测模型,为宫颈癌复发防治提供科学依据。方法:选择1992年1月至2005年12月湖南省肿瘤医院收治的4358例宫颈癌患者为研究对象,随访宫颈癌患者治疗后的复发情况。对其可能的影响因素进行单因素分析,将单因素分析有统计学意义或单因素分析无统计学意义但专业上认为可能有意义的变量纳入多元Cox回归分析,建立宫颈癌复发风险预测模型,预测模型通过列线图展示。采用受试者工作特征(receiver operating characteristic,ROC)曲线、一致性曲线和临床决策曲线对模型进行评价。结果:单因素分析显示:不同年龄、初潮年龄、生产次数、流产次数、临床分期和治疗方式的宫颈癌患者复发率比较,差异均有统计学意义(均P15岁)+0.459×(流产次数≥3)+0.416×(临床Ⅱ期)+0.613×(临床Ⅲ/Ⅳ期)+0.366×(治疗方式为手术+化学治疗)+0.015×(治疗方式为单纯化学治疗)。本研究构建的宫颈癌复发Cox风险预测模型曲线下面积为0.736(95%CI:0.684~0.789),最佳预测阈值为0.857,灵敏度为0.576,特异度为0.810。从临床决策曲线看净获益值较高,有效性良好。结论:患者年龄、初潮年龄、流产次数、临床分期和治疗方式是影响宫颈癌复发的独立因素,本研究构建的宫颈癌复发Cox比例风险模型可较好地预测宫颈癌复发的风险。

关键词：宫颈癌复发影响因素风险预测模型 Cox回归

热处理工艺对激光熔化沉积制造JBK-75合金组织及性能的影响

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金属热处理 2023年第4期48卷 111-117页

作者：李佶纳苏杰刘赓王敖伊勇钢铁研究总院有限公司特殊钢研究院北京100081

采用激光熔化沉积技术制备JBK-75合金,选取750℃直接时效和1180℃高温固溶+750℃时效两种不同热处理工艺路线,分析了其沉积态的显微结构,对比两种不同热处理态的组织和力学性能。结果表明,沉积态JBK-75合金组织表现为各向异性,存在柱状... 详细信息

采用激光熔化沉积技术制备JBK-75合金,选取750℃直接时效和1180℃高温固溶+750℃时效两种不同热处理工艺路线,分析了其沉积态的显微结构,对比两种不同热处理态的组织和力学性能。结果表明,沉积态JBK-75合金组织表现为各向异性,存在柱状晶、胞状组织和Ti元素偏聚。直接时效处理JBK-75合金打印组织未发生溶解,打印组织对强化相(γ′相)的析出行为几乎没有影响,但是Ti元素的偏聚促进了晶界有害相(η相)的生成。高温固溶+时效处理JBK-75合金打印组织消失,获得细小均匀的γ晶粒且在晶界未发现η相。高温固溶+时效处理激光熔化沉积JBK-75合金表现出最佳的强塑性配比,抗拉强度为1055 MPa、屈服强度为679 MPa、断后伸长率为29%,达到锻件JBK-75合金热处理态力学性能水平。

关键词：激光熔化沉积 JBK-75合金元素偏聚析出固溶+时效处理