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Existence of Boundary Value Problems for Impulsive Fractional Differential Equations with a Parameter

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Communications on Applied Mathematics and Computation 2021年第4期3卷 585-604页

作者： Jin You Mengrui Xu shurong sun School of Mathematical Sciences University of JinanJinan 250022ShandongChina

We investigate a class of boundary value problems for nonlinear impulsive fractional differential equations with a *** the deduction of Altman’s theorem and Krasno-selskii’s fixed point theorem,the existence of this... 详细信息

关键词： Fractional differential equations Boundary value problems Impulsive Existence

EXCLUSIVE MEASUREMENT OF A QUARTERNARY FRAGMENTATION EVENT OF RELATIVISTIC OXYGEN NUCLEUS IN EMULSION

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Chinese Physics Letters 1988年第7期5卷 309-312页

作者： TANG Xiaowei sun shurong ZHENG Puying Institute of High Energy Physics Academia SinicaBeijing

An event of peripheral collision of a relativistic oxygen *** immediately disintegrates into four helium nuclei,a quarternary fragmentation event,has been measured exclusively,and the mechanism of this event is *** qu... 详细信息

关键词： fragmentation integrate collision

ATTRACTIVE BEHAVIOR OF SOLUTIONS OF A NONLINEAR HIGHER ORDER DIFFERENCE EQUATIONS

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Annals of Differential Equations 2005年第4期21卷 556-561页

作者： Han Zhenlai sun shurong Shi Bao Institute of Applied Math. Naval Aeronautical Engineerin9 Institute Yantai 264001 School of Math. Shandong University Jinan 250100 School of Science Jinan University Jinan 250022

In this paper, we study the global attractivity of solutions of higher order nonlinear difference equation xn＋a=f（xn＋ι-1,xn＋ι-2,…,xn,xn-1）,n=0,1,2,…,where f is a continuous, positive, decreasing function on [0, ＋∞）^ι＋1／{（0,…, 0）}. We extend some known global behavior of the solutions of nonlinear higher order difference equations.

关键词： positive equilibrium attractor global attractivity

STRONG LIMIT POINT FOR LINEAR HAMILTONIAN DIFFERENCE SYSTEM

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Annals of Differential Equations 2005年第3期21卷 407-411页

作者： sun shurong Han Zhenlai Chen Shaozhu School of Math. and System Science Shandong University Jinan 250100 Institute of Applied Math. Naval Aeronautical Engineering Institute Yantai 264001 School of science Jinan University Jinan 250022

The definition of strong limit-point for singular Hamiltonian difference expressions with complex coefficients are given, and some strong limit-point criteria are established.

关键词： minimal operator maximal operator limit point strong limitpoint

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广义反射-透射系数算法的无量纲化

地震学报 2009年第4期31卷 377-384页

作者：袁腊梅凡友华孙书荣哈尔滨工业大学深圳研究生院中国深圳518055

水平层状介质中瑞利波频散曲线的计算一直是受关注的问题.陈晓非提出的广义反射-透射系数方法虽然具备很好的精确性和稳定性,但是算法中起决定作用的矩阵E存在有量纲元素,并且不同元素之间的数量级差异很大.本文作者通过把广义反射-透... 详细信息

水平层状介质中瑞利波频散曲线的计算一直是受关注的问题.陈晓非提出的广义反射-透射系数方法虽然具备很好的精确性和稳定性,但是算法中起决定作用的矩阵E存在有量纲元素,并且不同元素之间的数量级差异很大.本文作者通过把广义反射-透射系数算法无量纲化,得到了简洁的瑞利波频散函数的公式体系.分别计算了改进后算法和原算法中矩阵E的最大模元素与最小模元素的比值ε,发现前者的矩阵E中最大模元素与最小模元素最多只相差1个数量级,而后者的矩阵E中最大模元素与最小模元素之间最大达11个数量级的差异,尽管后者可以通过选取变量的单位减小ε的值,但新算法精度更高,从而完善了利用广义反射-透射系数方法求解瑞利波频散曲线问题的理论和算法.

关键词：广义反射-透射系数无量纲频散瑞利波

Logic-gated tumor-microenvironment nanoamplifier enables targeted delivery of CRISPR/Cas9 for multimodal cancer therapy

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Acta Pharmaceutica Sinica B 2024年第2期14卷 795-807页

作者： Yongchun Pan Xiaowei Luan Fei Zeng Xuyuan Wang shurong Qin Qianglan Lu Guanzhong He Yanfeng Gao Xiaolian sun Xin Han Bangshun He Yujun Song Department of Laboratory Medicine Nanjing First HospitalNanjing Medical UniversityNanjing 210006China College of Engineering and Applied Sciences State Key Laboratory of Analytical Chemistry for Life ScienceNanjing UniversityNanjing 210023China State Key Laboratory of Natural Medicines Key Laboratory of Drug Quality Control and PharmacovigilanceDepartment of Pharmaceutical AnalysisChina Pharmaceutical UniversityNanjing 211198China School of Medicine&Holistic Integrative Medicine Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources IndustrializationNanjing University of Chinese MedicineNanjing 210023China

Recent innovations in nanomaterials inspire abundant novel tumor-targeting CRISPR-based gene ***,the therapeutic efficiency of traditional targeted nanotherapeutic strategies is limited by that the biomarkers vary in a spatiotemporal-dependent manner with tumor ***,we propose a self-amplifying logic-gated gene editing strategy for gene/H_(2)O_(2)-mediated/starvation multimodal cancer *** this approach,a hypoxia-degradable covalent-organic framework(COF) is synthesized to coat a-ZIF-8 in which glucose oxidase(GOx) and CRISPR system are *** intensify intracellular redox dyshomeostasis,DNAzymes which can cleave catalase mRNA are loaded as *** the nano system gets into the tumor,the weakly acidic and hypoxic microenvironment degrades the ZIF-8@COF to activate GOx,which amplifies intracellular H^(+)and hypoxia,accelerating the nanocarrier degradation to guarantee available CRISPR plasmid and GOx release in target *** tandem reactions deplete glucose and oxygen,leading to logic-gated-triggered gene editing as well as synergistic gene/H_(2)O_(2)-mediated/starvation ***,this approach highlights the biocomputing-based CRISPR delivery and underscores the great potential of precise cancer therapy.

关键词： CRISPRdelivery Enzymeencapsulation Logic gate Hybridmaterial Hypoxia Gene editing Precise nanomedicine Multimodal therapy

An epidermal electrode based triboelectric walking energy harvester for wearable wireless sensing applications

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Science China(Technological Sciences) 2024年第3期67卷 949-957页

作者： CHANG ShiYuan LIU FuHai CHEN JinKai XIA LianBin ZHOU Hao JIANG JingYang DONG Kang ZHANG ChenHao WU Yun CHEN Jin XUAN Weipeng sun LingLing JIN Hao DONG shurong LUO JiKui Ministry of Education Key Laboratory of RF Circuits and Systems Hangzhou Dianzi UniversityHangzhou 310018China Special Equipment College Hangzhou Vocational&Technical CollegeHangzhou 310018China College of Information Science and Electronic Engineering Zhejiang UniversityHangzhou 330027China ZJU-Hangzhou Global Scientific and Technological Innovation Center Zhejiang UniversityHangzhou 311200China

Harvesting bio-kinetic energy using a triboelectric nanogenerator(TENG) is one of the promising routes to solve the sustainable energy supply problem for wearable electronics. However, additional materials, complex fabricating processes or specific mechanical structures are needed for existing TENGs to harvest bio-kinetic energy. Besides, they need to be tightly attached to the human body, which may result in detachment and malfunction under tense human motion. Herein, an intrinsic epidermal electrode-based TENG(E-TENG) is proposed to harvest human walking energy. The wearing shoes and ground are used as tribo-materials, and the human epidermis is used as the back electrode of the E-TENG. Compared with the traditional TENGs,the E-TENG does not need any additional tribo-materials and complex mechanical structures. Under optimal conditions, the voltage output of E-TENG can reach 914 V. E-TENG has been used as a self-powered warning sensor and pedometer sensor for demonstration. Furthermore, E-TENG based self-powered wireless sensor system has been developed using a newly designed micro energy electronic switch(MEES). Ambient ultraviolet intensity, temperature and humidity information can be monitored and then transmitted to mobile phone every 3.5 min, demonstrating great potential for widespread wearable applications.

关键词： triboelectric nanogenerator wearable wireless sensing self-powered

固溶处理对新型Mg-Mn-Ca-Sr合金显微组织及力学性能的影响

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热加工工艺 2014年第20期43卷 140-142页

作者：孙淑荣米秀杰长春职业技术学院工程技术分院吉林长春130033

研究了固溶处理对Mg-1.5Mn-1Ca-1Sr合金显微组织和力学性能的影响。结果表明,Mg-1.5Mn-1Ca-1Sr合金中的第二相主要为Mg2Ca、Mg17Sr2和α-Mn相。第二相同时分布在晶界上和晶粒内。经过固溶处理后,存在于晶界处的Mg2Ca相溶解入α-Mg基体,... 详细信息

研究了固溶处理对Mg-1.5Mn-1Ca-1Sr合金显微组织和力学性能的影响。结果表明,Mg-1.5Mn-1Ca-1Sr合金中的第二相主要为Mg2Ca、Mg17Sr2和α-Mn相。第二相同时分布在晶界上和晶粒内。经过固溶处理后,存在于晶界处的Mg2Ca相溶解入α-Mg基体,细化了晶界,减轻了合金的断裂倾向。α-Mn相分布也更加均匀。固溶强化和第二相强化共同作用,显著提升了固溶态合金的常温力学性能。

关键词： Mg-Mn-Ca-Sr合金固溶处理显微组织力学性能

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用简化的可用推力模型确定飞机的极曲线

飞行力学 1989年第3期7卷 74-79页

作者：王传煌孙淑荣飞行试验研究院

本文介绍一种用简化的可用推力模型来确定飞机极曲线的方法.文中用歼×飞机的试验数据对该方法进行了验证.

关键词：飞机推力模型极曲线