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Science China(Information Sciences) 2019年第2期62卷 101-118页

作者： Guangdeng ZONG yankai li Haibin SUN School of Engineering Qufu Normal University

In this paper, the issue of disturbance observer based resilient control is addressed for Markovian jump nonlinear systems with multiple disturbances and general uncertain transition rates. The disturbances are divided into two parts: one has a bounded H2 norm, and the other is given by an exogenous system. The general uncertain transition rate matrix is composed of unknown elements and uncertain ones. The uncertain transition rate only has a known approximate range. First, the disturbance described by the exogenous system is estimated by a disturbance observer, and its estimation is used for the controller as feedforward compensation. Subsequently, by using the resilient control method, a composite anti-disturbance resilient controller is constructed to guarantee stochastic stability with L2-L∞performance of the closed-loop systems. Subsequently, the Lyapunov stability method and linear matrix inequality technique are applied to obtain the controller gain. Finally, an application example is provided to illustrate the effectiveness of the proposed approach.

关键词： composite anti-disturbance control resilient controller Markovian jump nonlinear systems general uncertain transition probabilities multiple disturbances L2-L∞ performance

Post-synthesis modification of porous organic polymers with amine： a task-specific microenvironment for CO2 capture

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International Journal of Coal Science & Technology 2017年第1期4卷 50-59页

作者： yankai li li Yang Xiang Zhu Jun Hu Honglai liu State Key Laboratory of Chemical Engineering Departmentof Chemistry East China University of Science andTechnology Shanghai 200237 China

A porous organic polymer named FC-POP was facilely synthesized with extraordinary porosity and excellent stability. Further covalent incorporation of various amines including single amine group, multi-amine groups of diethylenediamine （DETA）, and poly-amine groups of polyethylenimine （PEI） to the network gave rise to task-specific modification of the microenvironments to make them more suitable for CO2 capture. As a result, significant boost of CO2 adsorption capacity of 4.5 mmol/g （for FC-POP-CH2DETA, 273 K, 1 bar） and the CO2/N2 selectivity of 736.1 （for FC- POP-CH2PEI） were observed after the post-synthesis amine modifications. Furthermore, these materials can be regener- ated in elevated temperature under vacuum without apparent loss of CO2 adsorption capacity.

关键词： Porous organic polymers Friedel-Crafts alkylation Post-synthesis Amine modification CO2 capture

Synergistically enhanced dielectric, insulating and thermally conductive performances of sandwich PMMA based dielectric films

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Progress in Natural Science:Materials International 2024年第3期34卷 591-597页

作者： Dongmei Zhang Yufan li Yuchao li Zhonggui Sun Hanxue Zhu Lujia Yang Yanhu Zhan yankai li Shi Wang Jun-Wei Zha School of Mathematical Sciences Liaocheng University School of Materials Science and Engineering Liaocheng University State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM) Nanjing University of Posts & Telecommunications School of Chemistry and Biological Engineering University of Science and Technology Beijing

A tri-layered(B-G-B) dielectric films were simply prepared by alternatively spin-coating boron nitride/polymethylmethacrylate(BN/PMMA, B) and graphene nanosheets(GNS/PMMA, G) compound solutions. The structure, morphology, thermal conductivity, and particularly the dielectric and relaxation behaviors were systematically studied. Results showed that a good exfoliation and dispersion of BN and GNS can be simply achieved through intensive mechanical compounding with PMMA in the internal mixer. The dielectric constant and breakdown strength of the obtained 1-3-1(B-G-B) sandwich composite film reached 4.3(@1 kHz) and 458.6kV/mm, being 119 % and 113 % higher than that of pure PMMA, respectively. Furthermore, the overall thermal conductivity of sandwich 1-3-1 composite increased by 112 % due to the addition of thermally conductive BN and GNS. The sandwich design strategy provided an effective way of achieving good permittivity, high insulation, and improved thermal conductivity simultaneously, showing potential applications in the miniaturization and integration of electronic devices.

关键词： Sandwich structure Breakdown strength Thermal conductivity Dielectric constant Composites

Neuroprotection of a cocktail therapy involving anti-intercellular adhesion molecule 1 antibody and insulin-like growth factor 1 in treatment of cerebral ischemia/reperfusion injury in cats Nuclear magnetic resonance examination and pathological validatio

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Neural Regeneration Research 2008年第12期3卷 1332-1337页

作者： Huaijun liu liqun Yan Yaping Hou Shuochun Wu Dan He linfang li yankai Wu BoyuanHuang Fei Yang Department of Medical Imaging Second Hospital Hebei Medical University Shijiazhuang 050000 Hebei Province China

BACKGROUND： The pathophysiological mechanisms of ischemia are extremely complicated. It is difficult to confirm and maintain the therapeutic effects if only one neuroprotective agent is used. It is hypothesized that a cocktail therapy involving a combined application of neuroprotective agents is feasible and offers excellent therapeutic potential. OBJECTIVE： To evaluate the neuroprotective effects of a cocktail therapy of insulin-like growth factor 1 （IGF1） combined with anti-intercellular adhesion molecule 1 （ICAM1） antibody in the treatment of cerebral ischemia/reperfusion injury using medical imaging, pathology, and functional neurological deficit scoring techniques. DESIGN, TIME AND SETTING： This randomized, controlled, neuroimaging analysis of function and pathological observation was performed at the Laboratory of Molecular Imaging, Second Hospital, Hebei Medical University between September 2006 and December 2007. MATERIALS： Transient middle cerebral artery occlusion （MCAO） was induced in 24 healthy adult cats. Anti-ICAM1 antibody and IGF1 were sourced from the Shanghai Kangcheng Biological Product Co., Ltd., China. Stereotaxic apparatus was purchased from the Center for Medical Apparatus and Instruments, Shandong liaocheng People＇s Hospital, China. The in situ apoptosis kit was provided by the Beijing Zhongshan Biotechnique Co., Ltd., China. METHODS： Twenty-four cat models of MCAO were randomly divided into four groups （n = 6）： control, IGF1, anti-ICAM 1 antibody and cocktail therapy. Following a 2-hour ischemia and subsequent lateral cerebral ventricular puncture, 100 μg IGFl（cerebral ventricular）, 100 μg anti-ICAM1 antibody （i.v.）, 50 μg IGFl（lateral cerebral ventricular）＋ 50 μg anti-ICAM1 antibody （i.v.）, and 100 μg physiological saline （i.v.） were administered to the IGF1, anti-ICAM1 antibody, cocktail therapy and control groups, respectively. On the following day, the same administration was performed again. MAIN OUTCOME MEASURES： Pathological observat

关键词： neuroprotection cocktail therapy ischemia/reperfusion magnetic resonance imaging

Tracking Control for Helicopters with Input Stochastic Perturbation

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Tracking Control for Helicopters with Input Stochastic Pertu...

Post-synthesis Modification of Porous Organic Polymers with Amine: A tailor-made Task-specific Microenvironment

第30届中国控制与决策会议

作者： yankai li Mou Chen Jianye liu College of Automation Engineering Nanjing University of Aeronautics and Astronautics

In this paper, the flight control problem for helicopters is investigated under input stochastic *** unmeasurable states of the helicopter are estimated by a state observer. Then, combining the estimated states with the other measurable states of the helicopter, a state feedback controller is designed. In the controller design, the input stochastic perturbation is considered. By applying the designed controller, the helicopter is maintaining a hovering state at the predefined positions and yaw angle. In order to guarantee the stochastic stability of the closed-loop system, a sufficient condition is presented by using the theory of stochastic differential equation, Lyapunov stability method and linear matrix inequalities（LMIs） technique. Finally, the simulation is given to show the effectiveness of the proposed results.

关键词： Helicopter state observer stochastic perturbation linear matrix inequalities hovering

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Post-synthesis Modification of Porous Organic Polymers with ...

第18届全国分子筛学术大会

作者： yankai li Xiang Zhu Jun Hu Honglai liu State Key Laboratory of Chemical Engineering and Department of Chemistry East China University of Science and Technology

With the aim to selectively capture carbon dioxide from flue gas,a novel porous organic polymer named TS-POP was facilely synthesized with good porosity(1540 m g) and *** covalent incorporation of aminomethyl group(-CHNH),oligomeric amine diethylenetriamine(-CHDETA) and polymeric amines poly(ethylene imine)(-CHPEI) inside TS-POP led to both high CO adsorption capacities and CO/N ***,PEI incorporated POP exhibits most considerable CO/N selectivity(736.1,298 K) ascribing to spiffy adsorption enthalpy(60.0 KJ mol) and restriction with access of N into the *** work proved that the POPs may be an excellent platform to incorporate task-specific functional groups to enhance the CO adsorption ***,the regeneration capacity makes these POPs possible for practical applications.

关键词： Porous organic polymer CO2 adsorption post-modification

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液液微分散及其用于标准颗粒制备的研究进展

化工进展 2019年第1期38卷 30-44页

作者：李严凯王凯骆广生清华大学化学工程联合国家重点实验室北京100084

液液分散与液滴生成是化工生产最典型的多尺度动态过程之一,针对该类过程的精准控制是化工研究的难点与重点。近年来,伴随机械微加工与流体微量输运技术的快速兴起,基于微米尺度作用的微化工技术在液液分散与液滴生成的调控中展现出了... 详细信息

液液分散与液滴生成是化工生产最典型的多尺度动态过程之一,针对该类过程的精准控制是化工研究的难点与重点。近年来,伴随机械微加工与流体微量输运技术的快速兴起,基于微米尺度作用的微化工技术在液液分散与液滴生成的调控中展现出了显著优势,成为化工研究的前沿方向。本文针对近年来在微分散基本规律、微分散动态界面现象与微分散标准颗粒材料等领域的研究进展进行综述:围绕微分散基本规律,介绍了微尺度液滴破碎的主导作用力、液液微分散流型及微分散数值模拟方法;围绕微分散动态界面现象,分析了动态界面张力的变化规律及其影响因素;围绕微分散标准颗粒制备,简述了微分散颗粒制备的主流技术及其适用范围。同时,针对相关领域的发展方向进行了展望。

关键词：微液滴微分散微流体学传递过程界面张力标准颗粒

数字化仪控系统的动态失效模式与后果分析方法

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上海交通大学学报 2018年第S1期52卷 62-67页

作者：李延凯林萌杨燕华上海交通大学核科学与工程学院

失效模式与后果分析(FMEA)可以理清系统各个部件可能的失效模式,并分析其失效后果,在概率安全分析(PSA)工作中发挥着重要作用.传统的FMEA以静态分析为主,无法完全适用于具有复杂动态交互作用的数字化仪控系统(DCS).动态FMEA方法通过对DC... 详细信息

失效模式与后果分析(FMEA)可以理清系统各个部件可能的失效模式,并分析其失效后果,在概率安全分析(PSA)工作中发挥着重要作用.传统的FMEA以静态分析为主,无法完全适用于具有复杂动态交互作用的数字化仪控系统(DCS).动态FMEA方法通过对DCS系统功能(硬件、软件和固件功能,以及DCS与被控工艺系统间的交互)进行模拟,分析者可以动态地插入、分析DCS不同故障的影响,有效降低对分析者的经验依赖以及对电厂的运行数据依赖,提高FMEA的便捷性和效率,并使得后续动态故障树的建立等PSA分析工作变得更为可行也更为可靠.

关键词：数字化仪控系统核电厂仿真概率安全分析动态可靠性分析

Exploring color-tunable and intensity-controllable fluorescence for porous organic polymers via a copolymer strategy

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Exploring color-tunable and intensity-controllable fluoresce...

三个不同抗条锈病小麦品种种子内生真菌多样性分析

中国化学会第十四届全国氟化学会议

作者： yankai li Shiming Bi Shengying Wu Jun Hu limin Wang Honglai liu Ying Hu Key Laboratory for Advanced Materials (KLAM) and Institute of Fine Chemicals East China University of Science & Technology

Fluorescent materials has spurred flourishing research interests,for they lie at the crossroad of a wide range of applications,such as light-emitting motifs,fluorescent sensors,probes,and various luminescent displays. Most organic dyes dissipate their excitation energy in the aggregated state because of"aggregation caused

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植物保护学报 2019年第4期46卷 927-928页

作者：宋晓贺李彦凯李强安庆师范大学生命科学学院皖西南生物多样性和生态保护安徽省重点实验室安徽安庆246133 西北农林科技大学植物保护学院旱区作物逆境生物学国家重点实验室陕西杨凌712100

由条锈菌Puccinia striiformis f. sp. tritici引起的小麦条锈病是影响世界范围内小麦安全生产的重要病害。植物内生真菌是指在其生活史的一定阶段或全部阶段生活于健康植物组织或器官内部的真菌,宿主植物不表现出外在症状。种子表面和... 详细信息

由条锈菌Puccinia striiformis f. sp. tritici引起的小麦条锈病是影响世界范围内小麦安全生产的重要病害。植物内生真菌是指在其生活史的一定阶段或全部阶段生活于健康植物组织或器官内部的真菌,宿主植物不表现出外在症状。种子表面和内部携带有丰富的微生物种群,岳红宾等(1996)认为小麦种子内生真菌的组成与小麦品种有一定的关系。目前鲜见关于抗病植物种子内生真菌的报道,其种群组成及其在植物抗病性方面可能发挥的生物学功能也研究甚少。本研究利用ITS 区域高通量测序技术,研究三属麦1号、咸农4 号和铭贤169 三种小麦种子内生真菌群落组成,以期挖掘小麦抗条锈病的潜在有益内生真菌资源,这对小麦条锈病的可持续控制具有重要意义。

关键词：抗条锈病内生真菌格孢腔目小麦品种多样性分析