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Self-healing hydrogel for tissue repair in the central nervous system

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Neural Regeneration Research 2015年第12期10卷 1922-1923页

作者： Fu-yu Hsieh ting-Chen Tseng Shan-hui Hsu Institute of Polymer Science and Engineering National Taiwan University Research Center for Developmental Biology and Regenerative Medicine National Taiwan University Research and Development Center for Medical Devices National Taiwan University

Neurological disorders are diseases of the central and peripheral nervous *** disorders include Alzheimer＇s disease,epilepsy,brain tumor,and cerebrovascular diseases（stroke,migraine and other headache disorders,mult... 详细信息

关键词： NSCs Self-healing hydrogel for tissue repair in the central nervous system CNS

Chalcogen cathode and its conversion electrochemistry in rechargeable Li/Na batteries

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Science China Chemistry 2020年第10期63卷 1402-1415页

作者： Ya-hui Wang Xue-ting Li Wen-Peng Wang hui-Juan Yan Sen Xin yu-Guo Guo CAS Key Laboratory of Molecular Nanstructure and Nantechnology CAS Research/Education Center for Exellence in Molecular SciencesBeijing National Laboratoryfor Molecular Sciences(BNLMS)Institute of ChemnistryChinese Academy of Sciences(CAS)Bejing 100190China School of Science Bejing Jiaotong UniversinBejing 100044China University of Chinese Academy of Sciences Beijing 100049China

Chalcogen elements,such as sulfur(S),selenium(Se),tellurium(Te)and the interchalcogen compounds,have been studied extensively as cathode materials for the next-generation rechargeable lithium/sodium(Li/Na)*** high energy output of the Li/Na-chalcogen battery originates from the two-electron conversion reaction between chalcogen cathode and alkali metal anode,through which both electrodes are able to deliver high theoretical *** reaction also leads to parasitic reactions that deteriorate the chemical environment in the battery,and different cathode-anode combinations show their own *** this article,we intend to discuss the fundamental conversion electrochemistry between chalcogen elements and alkali metals and its potential influence,either positive or negative,on the performance of *** strategies to improve the conversion electrochemistry of chalcogen cathode are also reviewed to offer insights into the reasonable design of rechargeable Li/Nachalcogen batteries.

关键词： energy storage Li/Na-chalcogen battery chalcogen cathode conversion reaction

Domain wall dynamics driven by a circularly polarized magnetic field in ferrimagnet:effect of Dzyaloshinskii-Moriya interaction

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Rare Metals 2022年第11期41卷 3815-3822页

作者： ting-ting Liu Yi-Fei Hu Yang Liu Zhe-Jun-yu Jin Zheng-Hua Tang Ming-hui Qin Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials and Institute for Advanced Materials South China Academy of Advanced OptoelectronicsSouth China Normal UniversityGuangzhou510006China School of Physics and Electronic and Electrical Engineering Xiangnan UniversityChenzhou423000China

In this work,we study the domain wall motion in ferrimagnet driven by a circularly polarized magnetic field using the collective coordinate theory and atomistic micromagnetic simulations,and we pay particular attention to the effect of Dzyaloshinskii-Moriya interaction(DMI).Similar to the case of antiferromagnetic domain wall,ferrimagnetic wall moves at a speed which is linearly dependent on the DMI *** addition,it is revealed that the DMI plays a role in modulating the domain wall dynamics similar to that of the net spin density,which suggests another internal parameter for controlling domain wall in ***,the results show that the domain wall dynamics in ferrimagnets is much faster than that in ferromagnets,which confirms again the great potential of ferrimagnets in future spintronic applications.

关键词： Domain wall dynamics Spintronics Circularly polarized magnetic field Ferrimagnets

Synchronization between frontal eye field and area V4 during free-gaze visual search

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Zoological Research 2019年第5期40卷 394-403页

作者： ting Yan hui-hui Zhou Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences

Information flow between the prefrontal and visual cortices is critical for visual behaviors such as visual search. To investigate its mechanisms, we simultaneously recorded spike and local field potential (LFP) signals in the frontal eye field (FEF) and area V4 while monkeys performed a free-gaze visual search task. During free-gaze search, spike-LFP coherence between FEF and V4 was enhanced in the theta rhythm (4–8 Hz) but suppressed in the alpha rhythm (8–13 Hz). Cross-frequency couplings during the Cue period before the search phase were related to monkey performance, with higher FEF theta-V4 gamma coupling and lower FEF alpha-V4 gamma coupling associated with faster search. Finally, feature-based attention during search enhanced spike-LFP coherence between FEF and V4 in the gamma and beta rhythms, whereas overt spatial attention reduced coherence at frequencies up to 30 Hz. These results suggest that oscillatory coupling may play an important role in mediating interactions between the prefrontal and visual cortices during visual search.

关键词： Synchronization Frontal eye field (FEF) V4 Visual search

Covert communication based on transmission antenna selection in the downlink communication link

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The Journal of China Universities of Posts and Telecommunications 2021年第3期28卷 20-27页

作者： Guo hui Qiao ting School of Physics and Electronic Information Engineering Henan Polytechnic UniversityJiaozuo 454003China

A downlink covert communication model that consists of a base station and two legitimate users was considered. In addition to the general signals shared by the two users, the base station will send the covert signals only to one user in a certain time without wanting the other to detect this covert communication behavior. In order to achieve covert communication, two information transmission schemes are designed based on transmission antenna selection(TAS) with the help of artificial noise(AN) transmitted by the user receiving the covert signals, denoted as TAS-Ⅰ and TAS-Ⅱ respectively. Considering the best detection performance of the user only receiving the general signals, under the two schemes, the detection error probabilities and their average values, the connection probabilities, the system covert throughputs are separately calculated. In addition, on the premise of meeting the system's covert conditions, an optimization scheme is proposed to maximize the covert system throughput. Finally, the simulation results show that the proposed system can realize covert communication successfully, and the system covert performance under TAS-Ⅰ is better than that under TAS-Ⅱ.

关键词： covert communication transmission antenna selection(TAS) detection error probability covert throughput

The Record-Breaking Extreme Drought in yunnan Province, Southwest China during Spring-Early Summer of 2019 and Possible Causes

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Journal of Meteorological Research 2020年第5期34卷 997-1012页

作者： ting DING hui GAO National Climate Center China Meteorological AdministrationBeijing 100081

In spring and early summer of 2019, yunnan Province experienced the most severe seasonal drought on record,with days of extreme drought area exceeding 10^5 km^2 far more than normal. Consistently, the precipitation in each month from February to June is over 30% less than normal, and about 50% less in the most severe drought period(April–June). The rainy season in Southwest China(SWC) started on the third pentad in June 2019, which is the second latest in history. The rainy season in yunnan started on 24 June, which is the latest(29 days later than normal). On the contrary, the onset of the South China Sea summer monsoon(SCSSM) is abnormally early. The lag time between the start of the rainy season in SWC and the onset of the SCSSM in 2019 is 7 pentads, which is the largest since 1961, much longer than the climate mean(less than 1 pentad). The present study analyzes the possible reasons why the rainy season came extremely late and the drought disaster persisted and intensified after a much early SCSSM, at both seasonal and subseasonal timescales. The abnormally late onset of the rainy season and the second greatest potential evapotranspiration(PET) since 1981 are the direct reasons for the persistent drought. Statistical results show that the water vapor from southwest of yunnan in April–June contributes more than that from the east at the seasonal scale. In April–June 2019, however, the southern branch trough(SBT) was abnormally weak, the large and strong anticyclonic wind anomaly prevailed over the Bay of the Bengal(BOB), and the meridional water vapor transport to yunnan was weak. At the subseasonal scale, the weaker SBT lasted the longest, and the strong convection over the BOB came up late despite of an early onset of the SCSSM, which resulted in reduced low-level moisture convergence in yunnan and development of drought prior to the SCSSM onset. From the onset of SCSSM to the start of rainy season in SWC, the SBT and meridional water vapor transport from the B

关键词： yunnan Province extreme drought South China Sea summer monsoon(SCSSM) rainy season in Southwest China(SWC) southern branch trough(SBT)

Stability of supersaturated solid solution of quenched Al–X(X 5 Zn, Mg, Cu) binary alloys

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Rare Metals 2014年第2期33卷 139-143页

作者： Zhi-hui Zhang Bai-Qing Xiong Bao-Hong Zhu yu-ting Zuo National Center of Analysis and Testing for Nonferrous Metals& Electronic Materials General Research Institute of Nonferrous

In this study, the changing trend of crystal-lattice constant and the influential factors of the stability of supersaturated solid solutions with various alloying additions in the Al–X（Zn, Mg, Cu） binary alloys were investigated. The samples were analyzed using X-ray diffraction（XRD）,X-ray absorption fine structure（XAFS）, and scanning electron microscope（SEM）. It is found that the addition of Cu causes the largest change of crystal-lattice constant of the Al–xCu supersaturated solid solution binary alloy. The most dramatic change occurs in the initial stage of Cu *** change is stabilized thereafter. Also, at the same alloying element addition to the Al–X（X = Zn, Mg, Cu）binary alloys, the Al–xCu is the most unstable *** factors of the stability include the lattice constant change and the type of alloying element. The larger the lattice constant changes, the more unstable the supersaturated solid solution is. The alloying element, easy to aggregate, often leads to the solid solution less stable.

关键词： Lattice constant Binary Al alloy Supersaturated solid solution Stability

Intercalation assembly of optical hybrid materials based on layered terbium hydroxide hosts and organic sensitizer anions guests

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Chinese Chemical Letters 2013年第2期24卷 93-95页

作者： Liang-Liang Liu Qin Wang Dan Xia ting-ting Shen Ming-hui yu Wei-Sheng Liu yu Tang Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province State Key Laboratory of Applied Organic ChemistryCollege of Chemistry and Chemical EngineeringLanzhou University

Received 23 November 2012 Received in revised form 13 December 2012 Accepted 18 December 2012 Available online 20 January 2013

关键词： Optical hybrid materialsLayered terbium hydroxideOrganic sensitizerInteraction between host and guest

Influence of bubble-particle distance on the dynamic behaviors of a cavitation bubble near a particle

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Journal of Hydrodynamics 2023年第5期35卷 913-922页

作者： yun Dai hui Zhang ting Chen School of Optical Information and Energy Engineering Wuhan Institute of TechnologyWuhan430205China

Cavitation and silt-erosion often co-exist, causing severe damage on fluid machinery. In this paper, the dynamic behavior of a cavitation bubble near a fixed spherical particle is numerically studied, with the focus on the influence of the stand-off distance γ on the bubble collapse morphology, micro-jet velocities and pressure on the particle. With the increase in the value of γ, the bubble profile in the collapse stage exhibits three distinct characteristics: Mushroom-shaped, pear-shaped and spherical-shaped, and the corresponding micro-jets are identified as contact jet, non-contact jet, and long-distance jet. All studied distances can be categorized into three ranges, and the typical cases in each range are demonstrated. The maximum jet velocity Vmax and the maximum pressure difference between the upper and the bottom of the particle Δpmax show the highest peak at γ = 0.9, with Vmax up to 180 m/s and Δpmax up to 10.8 MPa.

关键词： Cavitation bubble bubble-particle distance fixed particle micro-jet