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Study of doping effect,phase separation and heterojunction in CMR manganites

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Science China(Physics,Mechanics & Astronomy) 2013年第1期56卷 85-98页

作者： YANG jie sun YuPing Key Laboratory of Materials Physics Institute of Solid State PhysicsChinese Academy of Sciences High Magnetic Field Laboratory Chinese Academy of Sciences

Mixed-valence manganites have attracted considerable research focus in recent years not only because of the potential application of colossal magnetoresistance(CMR) in magnetic devices,but also because of many intriguing physical properties observed in these *** elements at A-site can alter the filling of 3d Mn band and the tolerance *** the hole-and electron-doped CMR manganites exhibit a rich phase *** addition,more theoretical and experimental results suggest that phase separation is a critical factor for the understanding of CMR ***,there is an increasing interest in the fabrication and investigation on manganite-based heterojunction,which demonstrated excellent rectifying property,large MR,and photovoltaic effect.

关键词： Colossal magnetoresistance phase separation manganite-based heterojunction

Safety and effectiveness of electromyography-induced rehabilitation treatment after epidural electrical stimulation for spinal cord injury:study protocol for a prospective,randomized,controlled trial

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Neural Regeneration Research 2023年第4期18卷 819-824页

作者： Xiao-Pei sun jie-Jian Shi yong Bao jie Zhang Hui-Juan Pan Dian-You Li Yu Liang Qing Xie Ruijin Hospital Shanghai Jiao Tong University School of MedicineShanghaiChina Shanghai Ruijin Rehabilitation Hospital ShanghaiChina

Epidural electrical stimulation is a new treatment method for spinal cord injury(SCI).Its efficacy and safety have previously been *** treatment after epidural electrical stimulation is important to ensure and improve the postoperative efficacy of epidural electrical stimulation in patients with *** that electromyography(EMG)-induced rehabilitation treatment can accurately match the muscle contraction of patients with SCI,we designed a study protocol for a prospective,randomized controlled *** this trial,on the premise of adjusting the spinal cord electrical stimulator to obtain the maximum EMG signal of the target muscle,patients with SCI receiving epidural electrical stimulation will undergo EMG-induced rehabilitation *** of muscle strength of key muscles,quality of life,safety and therapeutic effects will be *** patients with SCI who are scheduled to undergo epidural electrical stimulation in Shanghai Ruijin Rehabilitation Hospital will be randomly divided into two groups with 10 patients per *** control group will receive conventional rehabilitation *** EMG-induced rehabilitation group will receive EMG-induced rehabilitation treatment of the target muscles of the upper and lower limbs based on conventional rehabilitation *** rehabilitation treatment,follow up for all patients will occur at 2 weeks and 1,3 and 6 *** primary outcome measure of this trial will be evaluation of target muscle recovery using the Manual Muscle Testing grading *** outcome measures will include modified Barthel Index scores,integrated EMG values,the visual analogue scale,Spinal Cord Independence Measure scores,and modified Ashworth scale *** safety indicator will be the incidence of adverse *** trial will collect data regarding the therapeutic effects of EMG-induced rehabilitation in patients with SCI receiving epidural electrical stimulation for 6 months after r

关键词： electromyography-induced rehabilitation epidural electrical stimulation muscle strength pain quality of life randomized controlled trial recovery spinal cord injury

A survey on Lyapunov-based methods for stability of linear time-delay systems

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Frontiers of Computer Science 2017年第4期11卷 555-567页

作者： Jian sun jie CHEN School of Automation Beijing Institute of Technology Beijing 100081 China Key Laboratory of Intelligent Control and Decision of Complex System Beijing Institute of Technology Beijing 100081 China

Recently, stability analysis of time-delay systems has received much attention. Rich results have been obtained on this topic using various approaches and techniques. Most of those results are based on Lyapunov stability theories. The purpose of this article is to give a broad overview of stabil- ity of linear time-delay systems with emphasis on the more recent progress. Methods and techniques for the choice of an appropriate Lyapunov functional and the estimation of the derivative of the Lyapunov functional are reported in this ar- ticle, and special attention is paid to reduce the conservatism of stability conditions using as few as possible decision vari- ables. Several future research directions on this topic are also discussed.

关键词： time-delay system,ity delay-dependent stability,Lyapunov-Krasovskii functionaldelay-independent stabil-linear matrix inequality,

On Endomorphism Monoids of Finite Kleene Algebras

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Algebra Colloquium 2019年第3期26卷 507-518页

作者： jie Fang Zhongju sun School of Mathematics and System Science Guangdong Polytechnic Normal University Guangzhou 510665China

An endomorphism monoid of an algebra *** said to be a band if every endomorphism on A is an idempotent,and it is said to be a demi-band if every noninject ive endomorphism on A is an *** precisely determine finite Kle... 详细信息

关键词： endomorphism monoid band Kleene algebra

On the usefulness of an assisted driving Hamiltonian for quantum adiabatic evolution

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Chinese Physics B 2018年第11期27卷 409-411页

作者： jie sun Songfeng Lu School of Computer Science and Technology Huazhong University of Science and Technology Wuhan 430074 China College of Educational Information and Technology Hubei Normal University Huangshi 435002 China Shenzhen Huazhong University of Science and Technology Research Institute Shenzhen 518063 China

In our recent work we showed, by investigating the initialization of some unusual forms of assisted driving Hamiltonians, that the addition of an assisted driving Hamiltonian is not always useful in quantum adiabatic evolution. These unusual forms are those that are not the relatively fixed ones that are widely used in the literature. In this paper, we continue this study, providing further evidence for the validity of the conclusion above by researching some relatively more complex forms of assisted driving scheme, which generalize the ones studied in our previous work.

关键词： quantum adiabatic evolution assisted driving Hamiltonian quantum computing

Paragnomoxyala papillifera ***.(Nematoda:Monhysterida)from the Bohai Sea,China

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Journal of Oceanology and Limnology 2021年第3期39卷 1085-1090页

作者： Yan sun yong HUANG College of Life Sciences Liaocheng UniversityLiaocheng 252059China College of marine Life Sciences Ocean University of ChinaQingdao 266003China Key Laboratory for Ecological Conservation and Biodiversity of Institution of Higher Learning of Shandong Province Liaocheng 252059China

A new free-living marine nematode species of the family Xyalidae from Laizhou Bay of the Bohai Sea,China is described and illustrated *** papillifera *** characterized by large funnel-shaped buccal cavity,circular amphidial fovea located posterior to buccal cavity,straight spicules with slightly curved distal end,gubernaculum absent,four papilliform precloacal supplements,tail conico-cylindrical with two ventral embossments in males and having longitudinal rows of cervical setae and subventral caudal setae in *** new species is easily identified from other two recorded species in the genus by having papilliform precloacal supplements and ventral embossments along conical portion of tail of males.A pictorial key for three species of Paragnomoxyala and comparative table of three species with important characteristics are provided.

关键词： free-living marine nematodes taxonomy new species Laizhou Bay

Shear Stress Distribution in the Vicinity of Tilting Disk Heart Valve Model

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Chinese Physics Letters 1997年第1期14卷 28-31页

作者： sun yong-da Department of Applied Physics Tianjin UniversityTianjin 300072

The visualizations of pulsatile flows through tilting disk heart valve models were completed by means of the technique of the dynamic flow *** distribution of the fluid shear stresses in the near vicinity of heart val... 详细信息

关键词： Shear flows flow

Thermal Properties of Mg–Al/AlN Composites Fabricated by Powder Metallurgy

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Acta Metallurgica Sinica(English Letters) 2018年第6期31卷 641-649页

作者： jie Chen Chong-Gao Bao Zhi-Wei Liu Ben-Shuang sun yong-Chun Shu Qing-Kui Li Henan Province Industrial Technology Research Institute of Resources and Materials Zhengzhou University State Key Laboratory for Mechanical Behavior of Materials School of Materials Science and EngineeringXi’an Jiaotong University

Magnesium matrix composites reinforced with AlN particles were fabricated by the powder metallurgy *** mixing methods were used in this study to control the distribution of Al N *** microstructure,thermal diffusivity and thermal expansion of the Mg–Al/Al N composites using different mixing methods were *** results showed that the intergranular and intragranular distributions of Al N particles were obtained,respectively,by controlling the mixing *** composite with intragranular particles exhibited lower thermal diffusivity because of the existences of more interfaces,defects and grain boundaries,which acted as scattering centers and reduced the mean free path of electrons and *** existence of Al N particles lowered the coefficient of thermal expansion（CTE）and enhanced the dimensional stability of the *** the use of the improved mixing method further reduced the CTE of Mg–Al/Al N composites.

关键词： Magnesium matrix composite Microstructure Thermal diffusivity Thermal expansion Mixing

On the time-independent Hamiltonian in real-time and imaginary-time quantum annealing

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Chinese Physics B 2020年第10期29卷 167-171页

作者： jie sun Songfeng Lu Hubei Engineering Research Center on Big Data Security School of Cyber Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China School of Internet Anhui UniversityHefei 230039China Shenzhen Huazhong University of Science and Technology Research Institute Shenzhen 518063China

We present the analog analogue of Grover's problem as an example of the time-independent Hamiltonian for applying the speed limit of the imaginary-time Schrödinger equation derived by Okuyama and Ohzeki and the new class of energy-time uncertainty relation proposed by Kieu. It is found that the computational time of the imaginary-time quantum annealing of this Grover search can be exponentially small, while the counterpart of the quantum evolution driven by the real-time Schrödinger equation could only provide square root speedup, compared with classic search. The present results are consistent with the cases of the time-dependent quantum evolution of the natural Grover problem in previous works. We once again emphasize that the logarithm and square root algorithmic performances are generic in imaginary-time quantum annealing and quantum evolution driven by real-time Schrödinger equation, respectively. Also, we provide evidences to search deep reasons why the imaginary-time quantum annealing can lead to exponential speedup and the real-time quantum annealing can make square root speedup.

关键词： time-independent Hamiltonian imaginary-time quantum annealing quantum speed limit the energy-time uncertainty relation continuous Grover's search