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Biological Stimuli-responsive Polymer Systems:Design,Construction and Controlled Self-assembly

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Chinese Journal of Polymer Science 2018年第3期36卷 347-365页

作者： miao-miao Xu Ren-Jie Liu Qiang Yan Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular ScienceFudan UniversityShanghai 200433China

Biological stimuli-responsive polymers have increasingly attracted attention in recent years because it can satisfy many requirements of applications related with human body while traditional systems do not *** to the importance of this burgeoning field,great efforts have been devoted and,up to now,polymer chemists have made a remarkable success in this prospective research *** this review,we systematically generalize the present state of biological stimuli-responsive polymer *** highlight several representative examples to specify the current problems and look ahead a clear sense of direction in this area.

关键词： Biological stimuli Responsive polymer Controlled self-assembly Biomedicine

A NEW METHOD OF PREPARATION OF METAL OXIDE MODIFIED INORGANIC MEMBRANE

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Chinese Chemical Letters 1995年第2期6卷 165-166页

作者： Zhang, RZ Xiong, GX Sheng, SS Li, xs Chinese Acad Sci Dalian Inst Chem Phys State Key Lab Catalysis Dalian 116023 Peoples R China

A new method(premodification) is proposed to manufacture inorganic membrane. A series of metal oxide (NiO, CoO, La2O3, Ce2O3, Sn2O3 Y2O3) modified inorganic membranes are successfully developed and are characterized by QELS, BET, XRD and DTA. Ile membranes have a very narrow pore size distribution and the pore size is around 4-10nm. The metal oxide is believed to be a monolayer on the surface of gamma -Al2O3. The temperature influence has also been investigated.

关键词： d栴

Experimental research on the development of residual strain in seasonal frozen soil under freezing-thawing and impact type traffic loads

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Earthquake Engineering and Engineering Vibration 2021年第2期20卷 335-345页

作者： Liu Tianhua Wang miao Harbin University of Science and Technology Harbin 150080China Heilongjiang Institute of Technology Harbin 150050China

Vehicle load is among the main factors affecting the deformation of subgrade *** this research study,the concept of impact type traffic load is introduced to investigate the effects of vehicle load based on the dynamic stress and displacement time histories acquired from seasonal frozen subgrade *** freezing-thawing and dynamic triaxial tests and considering the amplitude and loading sequence of impact type traffic load,the residual deformation characteristics of subgrade soil under impact type traffic loads and freezing-thawing cycles is *** was found that under impact type traffic load,the residual deformation of soils increased sharply as the amplitude of impact type traffic load *** was also found that the increase in the amplitude of impact type traffic load led to the increase of residual deformation in a scale of power and exponential *** amplitudes of impact type traffic load affect the development stress-strain path of the residual *** the soil experienced the proper amount of pre-vibration of the light load,residual deformation decreased by 15%.After freezing-thawing,the residual strain of soil increased as the amplitude of the impact type traffic loads ***,when the amplification effect of freezing-thawing on the residual strain was basically stable,the residual deformation increased by about 10%.The peak impact type traffic load had a large effect on soil deformation after the freezing-thawing process,leading to the observation that of the earlier the peaks,the stronger the effect of *** the soil was subjected to preloading with a small load,the influence of the freezing-thawing cycles gradually *** results may be useful in preventing and controlling the risk of subgrade soil failure when construction takes place spring thaw periods.

关键词： impact type traffic load freezing-thawing dynamic triaxial test loading sequence residual strain

A survey of operating system support for persistent memory

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Frontiers of Computer Science 2021年第4期15卷 29-48页

作者： miao CAI Hao HUANG Department of Computer Science and Technology Nanjing UniversityNanjing 210023China

Emerging persistent memory technologies,like PCM and 3D XPoint,offer numerous advantages,such as higher density,larger capacity,and better energy efficiency,compared with the ***,they also have some drawbacks,e.g.,slower access speed,limited write endurance,and unbalanced read/write *** memory technologies provide both great opportunities and challenges for operating *** a result,a large number of solutions have been *** the increasing number and complexity of problems and approaches,we believe this is the right moment to investigate and analyze these works *** this end,we perform a comprehensive and in-depth study on operating system support for persistent memory within three ***,we present an overview of how to build the operating system on persistent memory from three perspectives:system abstraction,crash consistency,and system ***,we classify the existing research works into three categories:storage stack,memory manager,and OS-bypassing *** each category,we summarize the major research topics and discuss these topics ***,we present the challenges and opportunities in each topic,describe the contributions and limitations of proposed approaches,and compare these solutions in different ***,we also envision the future operating system based on this study.

关键词： persistent memory operating system survey

Method for designing constant thrust power schedule

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航空动力学报 2018年第9期33卷 2296-2304页

作者： miao Keqiang WANG Xi School of Energy and Power Engineering Beijing University of Aeronautics and Astronautics Beijing 100191 China Collaborative Innovation Center for Advanced Aero-Engine Beijing 100191 China

In order to make the power level angle(PLA)have the same bijection relationship with the thrust when the environment changes before operational limit exceedance,and ensure the pilot's ability of unrestricted throttle movement as well as the safety of the engine,a method used to design a constant thrust power schedule was *** research was based on a simulink turbofan engine model and the results were organized as look-up tables in different structures with *** was done to confirm the validity and demonstrate the effectiveness of the schedule obtained with the *** constant thrust takeoff schedule,constant thrust idle schedule and constant thrust part power schedule with the present constant thrust control(CTC)method were proved to be *** results can be applied to this specific engine but the method can be applied to any areoengine and can be even extended to the unmanned plane.

关键词： power schedule constant thrust turbofan engine operational limitations control method

A New Pregnane Glycoside from Dioscorea collettii var. hypoglauca

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Chinese Chemical Letters 1998年第8期9卷 739-742页

作者： Hu, K Dong, AJ Kobayashi, H Iwasaki, S Yao, xs Shenyang Pharmaceut Univ Dept Nat Prod Chem Shenyang 110015 Peoples R China NE Pharmaceut Co Inst Drug Res & Dev Shenyang 110026 Peoples R China Univ Tokyo Inst Mol & Cellular Biosci Tokyo 113 Japan

A new pregnane glycoside hypoglaucin G was isolated from Dioscorea collettii var. hypoglauca by bioactivity-guided fractionation, which showed a moderate activity of inducing morphological deformation of the Pyricularia oryzae mycelia. The structure of hypoglaucin G was established as 16 beta-(4'-methyl-5'-O-beta-D-glucopyranosyl-pentanoyloxy)-pregn-5-en-3 beta-ol-20-one 3-O-alpha-L-rhamnopyranosyl-(1-->2)-[alpha-L-rhamnopyranosyl-(1-->4)-]-beta-D-glucopyranoside by chemical evidence and spectral analysis, especially by 2D-NMR techniques.

关键词： hypoglaucin G Dioscorea collettii var. hypoglauca Pyricularia oryzae

Paleoclimate data assimilation： Its motivation, progress and prospects

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Science China Earth Sciences 2016年第9期59卷 1817-1826页

作者： FANG miao LI Xin Cold and Arid Regions Environment and Engineering Research Chinese Academy of Sciences Lanzhou 730000 China University of Chinese Academy of Sciences Beijing 100049 China Center for Excellence in Tibetan Plateau Earth Sciences Chinese Academy of Sciences Beijing 100101 China

Reconstructing past climate is beneficial for researchers to understand the mechanism of past climate change, recognize the context of modern climate change and predict scenarios of future climate change. Paleoclimate data assimilation(PDA), which was first introduced in 2000, is a promising approach and a significant issue in the context of past climate research. PDA has the same theoretical basis as the traditional data assimilation(DA) employed in the fields of atmosphere science, ocean science and land surface science. The main aim of PDA is to optimally estimate past climate states that are both consistent with the climate signal recorded in proxy and the dynamic understanding of the climate system through combining the physical laws and dynamic mechanisms of climate systems represented by climate models with climate signals recorded in proxies(e.g., tree rings, ice cores). After investigating the research status and latest advances of PDA abroad, in this paper, the background, concept and methodology of PAD are briefly introduced. Several special aspects and the development history of PAD are systematically summarized. The theoretical basis and typical cases associated with three frequently-used PAD methods(e.g., nudging, particle filter and ensemble square root filter) are analyzed and demonstrated. Finally, some underlying problems in current studies and key prospects in future research related to PDA are proposed to provide valuable thoughts on and a scientific basis for PDA research.

关键词： Climate reconstruction Paleoclimate modeling Proxies Data assimilation

Serviceability evaluation of water supply networks under seismic loads utilizing their operational physical mechanism

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Earthquake Engineering and Engineering Vibration 2022年第1期21卷 283-296页

作者： miao Huiquan Li Jie Key Laboratory of Urban Security and Disaster Engineering of China Ministry of Education Beijing University ofTechnologyBeijing 100124China State Key Laboratory of Disaster Reduction in Civil Engineering Tongji UniversityShanghai 200092China Department of Structural Engineering Tongji UniversityShanghai 200092China

The serviceability of water supply networks(WSNs)under seismic loads has significant importance for estimating the probable losses and the impact of diminished functionality on affected *** innovation presented in this paper is suggesting a new strategy to evaluate the seismic serviceability of WSNs,utilizing their operational physical *** one hand,this method can obtain the seismic serviceability of each node as well as entire *** the other hand,this method can dynamically reflect the propagation of randomness from ground motions to ***,a finite element model is established to capture the seismic response of buried pipe networks,and a leakage model is suggested to obtain the leakage area of ***,the transient flow analysis of WSNs with or without leakage is derived to obtain dynamic water flow and ***,the seismic serviceability of WSNs is analyzed based on the probability density evolution method(PDEM).Finally,the seismic serviceability of a real WSN in Mianzhu city is assessed to illustrate the *** case study shows that randomness from the ground motions can obviously affect the leakage state and the probability density of the nodal head during earthquakes.

关键词： water supply networks seismic serviceability nodal water pressure stochastic ground motions probability density evolution method

f(R) gravity and Maxwell equations from the holographic principle

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Science China(Physics,Mechanics & Astronomy) 2012年第3期55卷 375-380页

作者： miao RongXin MENG Jun LI miao Interdisciplinary Center for Theoretical Study University of Science and Technology of ChinaHefei 230026China Kavli Institute for Theoretical Physics Key Laboratory of Frontiers in Theoretical PhysicsInstitute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China

Extending the holographic program of our previous work,we derive f(R) gravity and the Maxwell equations from the holographic principle,using time-like holographic *** find that to derive the Einstein equations and f(R) gravity by a natural holographic approach,the quasi-static condition is *** also find the surface stress tensor and the surface electric current,surface magnetic current on a holographic screen for f(R) gravity and Maxwell's theory,respectively.

关键词： entropic gravity f(R) gravity Maxwell equations the holographic principle