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Global classical solutions for 3D compressible magneto-micropolar fluids without resistivity and spin viscosity in a strip domain

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Science China Mathematics 2024年第11期67卷 2485-2514页

作者： zefu feng Guangyi Hong Changjiang Zhu School of Mathematical Sciences Chongqing Normal UniversityChongqing 401331China School of Mathematics South China University of TechnologyGuangzhou 510641China

In this paper,we consider 3D compressible magneto-micropolar fluids without resistivity and spin viscosity in a strip *** prominent character of the governing model is the presence of the microstructure,a linear coupling structure involving derivatives of the velocity fields,which along with the lack of spin viscosity brings several challenges to the *** exploiting the two-tier energy method developed in Guo and Tice(Arch Ration Mech Anal,2013),we prove the global existence of classical solutions to the governing model around a uniform magnetic field that is non-parallel to the horizontal ***,we show that the solution converges to the steady state at an almost exponential rate as time goes to *** of the main ingredients in our analysis,compared with previous works on micropolar fluids,is that we deal with the microstructure by establishing some delicate estimates based on the analysis of the div-curl decomposition,and the coupling between the fluid velocity and the vorticity of angular velocity.

关键词： magneto-micropolar fluids compressible global existence large-time behavior

Initial and Boundary Value Problem for a System of Balance Laws from Chemotaxis:Global Dynamics and Diffusivity Limit

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Annals of Applied Mathematics 2021年第1期37卷 61-110页

作者： zefu feng Jiao Xu Ling Xue Kun Zhao School of Mathematical Sciences Chongqing Normal UniversityChongqing 400047China SUSTech International Center for Mathematics Southern University of Science and TechnologyShenzhen 518055GuangdongChina College of Mathematical Sciences Harbin Engineering UniversityHarbin 150001HeilongjiangChina Department of Mathematics Tulane UniversityNew OrleansLA 70118USA

In this paper,we study long-time dynamics and diffusion limit of large-data solutions to a system of balance laws arising from a chemotaxis model with logarithmic sensitivity and nonlinear production/degradation *** energy methods,we show that under time-dependent Dirichlet boundary conditions,long-time dynamics of solutions are driven by their boundary data,and there is no restriction on the magnitude of initial ***,the zero chemical diffusivity limit is established under zero Dirichlet boundary conditions,which has not been observed in previous studies on related models.

关键词： Balance laws chemotaxis initial-boundary value problem dynamic boundary condition strong solution long-time behavior diffusivity limit

缺血性脑卒中患者C-反应蛋白含量测定的临床意义

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实用神经疾病杂志 2005年第2期8卷 12-13页

作者：冯泽甫张红河南平顶山市第一人民医院神经内科平顶山467000

目的　探讨C -反应蛋白 (C -reactiveprotein ,CRP)与缺血性脑卒中的关系。方法　测定 42例急性缺血性脑卒中早期血浆CRP水平。结果　病变组CRP水平高于正常组 (4 2 8± 2 76)mg/L ,VS(2 0 4± 1 48)mg/L(P <0 0 1)。结论　CRP与缺... 详细信息

目的　探讨C -反应蛋白 (C -reactiveprotein ,CRP)与缺血性脑卒中的关系。方法　测定 42例急性缺血性脑卒中早期血浆CRP水平。结果　病变组CRP水平高于正常组 (4 2 8± 2 76)mg/L ,VS(2 0 4± 1 48)mg/L(P <0 0 1)。结论　CRP与缺血性脑卒中密切相关。

关键词： CRP C-反应蛋白急性缺血性脑卒中患者临床意义含量测定正常血浆早期 VS

加速康复外科在肝切除术治疗肝胆管结石病中的应用

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中华肝胆外科杂志 2016年第12期22卷 814-818页

作者：蒋遗云邬林泉李恩亮邓泽福冯潜雷钧袁荣发朱恒清南昌大学第二附属医院肝胆外科南昌330006

目的探讨加速康复外科（ERAS）在肝切除术治疗肝胆管结石患者围手术期的临床应用价值。方法回顾性分析2014年12月至2016年5月南昌大学第二附属医院肝胆外科收治的81例肝胆管结石行肝部分切除术患者的临床资料。将围手术期严格按照ERAS... 详细信息

目的探讨加速康复外科（ERAS）在肝切除术治疗肝胆管结石患者围手术期的临床应用价值。方法回顾性分析2014年12月至2016年5月南昌大学第二附属医院肝胆外科收治的81例肝胆管结石行肝部分切除术患者的临床资料。将围手术期严格按照ERAS理念管理的36例患者作为ERAS组，将按照传统模式管理的45例患者作为对照组，比较两组患者术后疼痛评分、围手术期炎性介质变化、术后临床指标以及并发症发生等情况。结果ERAS组患者术后疼痛评分明显低于对照组（P〈0．05），ERAS组患者于术后1、4、7天降钙素原（PCT）水平分别为（2．6±0．5）μg／L、（2．1±1．2）μg／L和（1．0±0．6）μg／L，对照组分别为（3．8±0．8）μg／L、（3．0±1．7）μg／L和（2．1±0．8）μg／L，两组差异有统计学意义（P〈0．05）。ERAS组患者术后1、4、7天白介素-6（IL-5）分别是（128．5±15．2）ng／L、（87．9±10．3）ng／L和（33．8±7．5）ng／L，对照组分别为（264．8±18．3）ng／L、（195．3±12．7）ng／L、（95．4±10．9）ng／L，两组差异有统计学意义（P〈0．05）。ERAS组患者术后1、4、7天C反应蛋白（CRP）分别是（40．4±9．8）mg／L、（67．2±6．4）mg／L和（32．2±5．4）mg／L，对照组分别为（58．4±13．2）mg／L、（100．5±10．8）mg／L和（50．6±8．7）mg／L，两组差异有统计学意义（P〈0．05）。ERAS组患者术后肛门排气时间明显缩短[（34．4±8．7）h比（57．7±11．8）h，P〈0．05]；术后住院时间明显缩短[（8．4±2．5）d比（11．6±3．3）d，P〈0．05]，而切口感染、胆漏、膈下脓肿、腹胀等术后常见并发症发生率差异无统计学意义（均P〉0．05）。结论ERAS理念应用于肝切除术治疗肝胆管结石病患者的围手术期管理，可减轻患者术后疼痛、降低围手术期应激反应、缩短术后肛门排气时间、住院时间，有利于快速康复。

关键词：肝胆管结石加速康复外科应激反应肝切除术

A fully biodegradable polydioxanone occluder for ventricle septal defect closure

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Bioactive Materials 2023年第6期24卷 252-262页

作者： zefu Li Pengxu Kong Xiang Liu Shuyi feng Wenbin Ouyang Shouzheng Wang Xiaopeng Hu Yongquan Xie fengwen Zhang Yuxin Zhang Rui Gao Weiwei Wang Xiangbin Pan Department of Structural Heart Disease National Center for Cardiovascular DiseaseChina&State Key Laboratory of Cardiovascular DiseaseFuwai HospitalChinese Academy of Medical Sciences&Peking Union Medical CollegeNational Health Commission Key Laboratory of Cardiovascular Regeneration MedicineNational Clinical Research Center for Cardiovascular DiseasesBeijingChina Tianjin Key Laboratory of Biomaterial Research Institute of Biomedical EngineeringChinese Academy of Medical Science&Peking Union Medical CollegeTianjinChina Department of Polymer Science and Engineering Key Laboratory of Systems Bioengineering(Ministry of Education)School of Chemical Engineering and TechnologyTianjin UniversityTianjin300072China Research and Development Department Lepu Medical Technology(Beijing)CoLtdBeijing102200China Key Laboratory of Innovative Cardiovascular Devices Chinese Academy of Medical SciencesChina

Ventricular septal defect(VSD)is one of the commonest congenital heart diseases(CHDs).Current occluders for VSD treatment are mainly made of nitinol,which has the risk of nickel allergy,persistent myocardial abrasion and fatal ***,a fully biodegradable polydioxanone(PDO)occluder equipped with a shape line and poly-L-lactic acid PLLA membranes is developed for VSD closure without the addition of metal *** occluder showed great mechanical strength,fatigue resistance,geometry fitness,biocompatibility and *** a rat subcutaneous implantation model,PDO filaments significantly alleviated inflammation response,mitigated fibrosis and promoted endothelialization compared with *** safety and efficacy of PDO occluder were confirmed in a canine VSD model with 3-year follow-up,demonstrating the biodegradable PDO occluder could not only effectively repair VSD,induce cardiac remodeling but also address the complications associated with metal ***,a pilot clinical trial with five VSD patients indicated that all the occluders were successfully implanted under the guidance of echocardiography and no adverse events occurred during the 3-month ***,the fully bioresorbable PDO occluder is safe and effective for clinical VSD closure and holds great promise for the treatment of structural CHDs.

关键词： Polymer Congenital heart disease Ventricle septal defect Biodegradable occluder Tissue regeneration

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眼动跟踪仪的光源布局优化方法

红外与激光工程 2024年第10期53卷 204-215页

作者：徐泽夫王晶晶曾冠中谢迪冯华君杭州海康威视数字技术股份有限公司研究院浙江杭州310052 浙江大学光电科学与工程学院浙江杭州310027

使用角膜瞳孔反射法的眼动跟踪仪相比基于表观的方法具有较高的视线估计精度,在人机交互、AR/VR等领域具有较大的实际应用价值。但是角膜瞳孔反射法受制于角膜非球面的影响,需要光源距离较近,从而限制普尔钦斑处于逼近球面的角膜区域。... 详细信息

使用角膜瞳孔反射法的眼动跟踪仪相比基于表观的方法具有较高的视线估计精度,在人机交互、AR/VR等领域具有较大的实际应用价值。但是角膜瞳孔反射法受制于角膜非球面的影响,需要光源距离较近,从而限制普尔钦斑处于逼近球面的角膜区域。但光源距离太近又会放大计算的误差,所以针对眼动跟踪仪的硬件结构缺乏量化设计指导的问题,提出了一种光源布局优化方法。通过计算机仿真的手段,建立了角膜的非球面几何模型,理论分析了不同光源布局下的平均视线估计精度,然后通过由粗到精的方式,优化求解得到最优光源布局,抑制了非球面角膜带来的影响。最后以两类典型的设备为例,在典型参数下分别讨论了头戴式和遥测式的最优双光源布局,结果可作为典型硬件设计的理论参考。

关键词：视线估计光源布局瞳孔角膜反射法非球面角膜

Genome resources for the elite bread wheat cultivar Aikang 58 and mining of elite homeologous haplotypes for accelerating wheat improvement

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Molecular Plant 2023年第12期16卷 1893-1910页

作者： Jizeng Jia Guangyao Zhao Danping Li Kai Wang Chuizheng Kong Pingchuan Deng Xueqing Yan Xueyong Zhang zefu Lu Shujuan Xu Yuannian Jiao Kang Chong Xu Liu Dangqun Cui Guangwei Li Yijing Zhang Chunguang Du Liang Wu Tianbao Li Dong Yan Kehui Zhan feng Chen Zhiyong Wang Lichao Zhang Xiuying Kong Zhengang Ru Daowen Wang Lifeng Gao College of Agronomy Collaborative Innovation Center of Henan Grain CropsState Key Laboratory of Wheat and Maize Crop Scienceand Center for Crop Genome EngineeringHenan Agricultural UniversityZhengzhou 450046HenanChina State Key Laboratory of Crop Gene Resources and Breeding the National Key Facility for Crop Gene Resources and Genetic ImprovementInsttute of Crop SciencesChinese Academy of Agricultural SciencesBeijing 100081China School of Life Science and Technology Henan Institute of Science and TechnologyXinxiangHenan 453003China xi'An Shansheng Biosciences Co. Ltd.Xi'an 71000China Zhejang Provincial Key Laboratory of Crop Genetic Resources College of Agriculture and BiotechnologyZhejang UniversityHangzhouZhejiang 310058China State Key Laboratory of Systematic and Evolutionary Botany Institute of BotanyChinese Academy of SciencesBeijing 100093China University of Chinese Academy of Sciences Bejing 100049China Key Laboratory of Plant Molecular Physiology Institute of BotanyChinese Academy of SciencesBejing 100093China State Key Laboratory of Genetic Engineering Colaborative Innovation Centerof Genetics and DevelopmentDeparment of BiochemistryInstitute of Plant BiologySchool of Life SciencesFudan UniversityShanghai 200438China Hainan Yazhou Bay Seed Laboratory Hainan Institute of Zhejiang UniversitySanyaHainan 56200China State Key Laboratory of Crop Stress Biology in Arid Areas College of AgronomyNorthwest&F UniversityYanglingShaanxi 612100China

Despite recent progress in crop genomics studies,the genomic changes brought about by modern breeding selection are still poorly understood,thus hampering genomics-assisted breeding,especially in polyploid crops with compound genomes such as common wheat(Triticum aestivum).In this work,we constructed genome resources for the modern elite common wheat variety Aikang 58(AK58).Comparative genomics between AK58 and the landrace cultivar Chinese Spring(CS)shed light on genomic changes that occurred through recent varietal *** also explored subgenome diploidization and divergence in common wheat and developed a homoeologous locus-based genome-wide association study(HGWAS)approach,which was more effective than single homoeolog-based GWAS in unraveling agronomic trait-associated loci.A total of 123 major HGWAs loci were detected using a genetic population derived from AK58 and *** homoeologous haplotypes(HHs),formed by combinations of subgenomic homoeologs of the associated loci,were found in both parents and progeny,and many could substantially improve wheat yield and related *** built a website where users can download genome assembly sequence and annotation data for AK58,perform blast analysis,and run *** work enriches genome resources for wheat,provides new insights into genomic changes during modern wheat improve-.ment,and suggests that efficientmining of elite HHs can make a substantial contribuutionto genomics-assisted breeding in common wheat and other polyploid crops.

关键词： common wheat genome sequencing subgenome diploidization and divergence homoeologous Iocus-based GWAs homoeologous haplotypes polyploid crops

预制桥墩组合钢模板应用现状调研及影响因素分析

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建筑结构 2022年第S2期52卷 1605-1610页

作者：冯晓楠张基成孟威宇胡松明刘建峰刘朵刘泽甫苏交科集团股份有限公司南京211112 徐州市公路事业发展中心徐州221006 河海大学南京210098

为了解预制桥墩组合钢模板(简称“钢模板”)工程应用现状及构造参数对其受力性能及稳定性能影响,针对钢模板的构成及结构设计开展调研分析,并总结其工程应用存在的问题。同时,依托徐韩快速化改造工程,建立钢模板实体模型,进行混凝土水... 详细信息

为了解预制桥墩组合钢模板(简称“钢模板”)工程应用现状及构造参数对其受力性能及稳定性能影响,针对钢模板的构成及结构设计开展调研分析,并总结其工程应用存在的问题。同时,依托徐韩快速化改造工程,建立钢模板实体模型,进行混凝土水化热产生的温度效应和钢模板高度、横截面尺寸等构造参数影响分析。研究表明:混凝土浇筑过程中产生的水化热升温作用对钢模板整体受力性能影响较大,在钢模板设计时应考虑这一因素;针对依托工程钢模板构造形式,钢模板高度对其整体受力性能及稳定性能影响较小,且具有极大的安全储备;钢模板截面尺寸改变对其侧模板面板变形及稳定性能影响较大。

关键词：预制桥墩组合钢模板应用现状影响因素力学性能稳定性能

单纯超声心动图技术指导经皮二尖瓣缘对缘修复术的可行性探索

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中国循环杂志 2023年第8期38卷 815-819页

作者：冯舒毅段福建张凤文王首正孔朋旭李泽夫李文超魏培坚房芳潘湘斌中国医学科学院、北京协和医学院、国家心血管病中心、阜外医院、结构性心脏病中心北京100037 中国医学科学院、北京协和医学院、国家心血管病中心、阜外医院、超声影像中心北京100037 郑州大学人民医院、河南省人民医院心脏中心、阜外华中心血管医院、儿童心脏病中心郑州451464

目的:探讨单纯经食道超声心动图引导经皮二尖瓣缘对缘修复术的安全性及有效性。方法:连续纳入2021年4~6月在中国医学科学院阜外医院行单纯经食道超声心动图引导经皮二尖瓣缘对缘修复术治疗的10例中重度至重度二尖瓣反流患者,并于术后1... 详细信息

目的:探讨单纯经食道超声心动图引导经皮二尖瓣缘对缘修复术的安全性及有效性。方法:连续纳入2021年4~6月在中国医学科学院阜外医院行单纯经食道超声心动图引导经皮二尖瓣缘对缘修复术治疗的10例中重度至重度二尖瓣反流患者,并于术后1个月及6个月进行了随访。二尖瓣反流程度由超声核心实验室评估诊断(0+表示无/轻微反流,1+表示轻度反流,2+表示中度反流,3+表示中重度反流,4+表示重度反流)。结果:10例患者,平均年龄(69.4±6.7)岁,7例为男性;均在单纯经食道超声心动图引导下成功行经皮二尖瓣缘对缘修复术,并均置入了1枚夹子。术后6个月时,所有患者二尖瓣反流程度较术前明显减轻,8例患者二尖瓣反流程度≤1+,9例患者二尖瓣反流程度≤2+;与术前相比患者心功能显著提升,NYHA心功能分级Ⅰ~Ⅱ级的患者由术前的1例增加到9例。结论:单纯经食道超声心动图引导下行经皮二尖瓣缘对缘修复术可行,且安全有效。

关键词：二尖瓣反流经导管治疗超声心动图二尖瓣修复术