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| 1 | Experimental measurement of the electrical conductivity of single crystal olivine at high temperature and high pressure under different oxygen fugacities显示文摘At 1.0-4.0 GPa and 1123-1473 K and under oxygen fugacity-controlled conditions (Ni + NiO, Fe + Fe3O4, Fe + FeO and Mo+ M0O2 buffers), a YJ-3000t Model six-anvil solid high-pressure apparatus and a Sarltron-1260 Impedance/Gain-Phase analyzer were employed to conduct an in situ measurement of the electrical conductivity of single crystal olivine. Experimental results showed that: (1) within the range of experimentally selected frequencies (103-106 Hz), the electrical conductivity of the sample is of great dependence on the frequency; (2) with the rise of temperature ( T), the electrical conductivity (σ) will increase, and the Arrenhius linear relationship is established between lgσ and 1/T; (3) under the control of oxygen buffer Fe+ Fe3O4, with the rise of pressure, the electrical conductivity tends to decrease whereas the activation enthalpy and independent-of-temperature preexponential factor tend to increase, with the activation energy and activation volume of the sample estimated at (1. 25 ± 0.08) eV and (0.105 ±0.025) cm3/mol, respectively; (4) under given pressure and temperature conditions, the electrical conductivity tends to increase whereas the activation energy tends to decrease with increasing oxygen fugacity; and ( 5) the mechanism of electrical conduction of small polarons can provide insight into the behavior of electrical conduction of olivine under high pressure and high temperature. | DAI Lidong LI Heping LIU Congqiang CUI Tongdi SHAN Shuangming YANG Changjun LIU Qingyou DENG Heming | 2006 | Progress in Natural Science:Materials International2006，16，4： | 9 |
| 2 | Longitudinal,transverse,density-of-states,and conductivity masses of electrons in(001),(101) and(111) biaxiallystrained-Si and strained-Si_(1-x)Ge_x显示文摘In this study,the electron effective masses,including longitudinal,transverse,density-of-states and conductivity effective masses,have been systematically investigated in(001),(101) and(111) biaxially strained Si and Si1-xGex.It is found that the effect of strain on the longitudinal and transverse masses can be neglected,that the density-of-states masses in(001) and(110) biaxially strained Si and Si1-xGex materials decrease significantly with increasing Ge fraction(x),and that the conductivity masses along typical orientations in(001) and(110) strained Si and Si1-xGex.are obviously different from those in relaxed Si.The quantitative results obtained from this work may provide valuable theoretical references to understanding strained materials physics and studying conduction channel design related to stress and orientations in the strained devices. | SONG JianJun YANG Chao ZHANG HeMing HU HuiYong ZHOU ChunYu WANG Bin | 2012 | Science China(Physics,Mechanics & Astronomy)2012，55，11： | 5 |
| 3 | Penetration depth at various Raman excitation wavelengths and stress model for Raman spectrum in biaxially-strained Si显示文摘The carrier mobility of Si material can be enhanced under strain,and the stress magnitude can be measured by the Raman spectrum.In this paper,we aim to study the penetration depths into biaxially-strained Si materials at various Raman excitation wavelengths and the stress model corresponding to Raman spectrum in biaxially-strained Si.The experimental results show that it is best to use 325 nm excitation to measure the material stress in the top strained Si layer,and that one must pay attention to the distortion of the buffer layers on measuring results while 514 nm excitation is also measurable.Moreover,we established the stress model for Raman spectrum of biaxially-strained Si based on the Secular equation.One can obtain the stress magnitude in biaxially-strained Si by the model,as long as the results of the Raman spectrum are given.Our quantitative results can provide valuable references for stress analysis on strained materials. | SONG JianJun YANG Chao HU HuiYong DAI XianYing WANG Cheng ZHANG HeMing | 2013 | Science China(Physics,Mechanics & Astronomy)2013，56，11： | 3 |
| 4 | Integrated distributed intelligent system architecture for incidents monitoring and diagnosis 显示文摘 | Ming Rao Haibin Yang Heming Yang | 1998 | Computers in Industry1998，，： | 1 |
| 5 | Integrated distributed intelligent system architecture for incidents monitoring and diagnosis 显示文摘 | RAO Ming YANG Haibin YANG Heming | 1998 | Computers in Industry1998，37，2： | 1 |
| 6 | Integrated Distributed Intelligent System Architecture for Incidents Monitoring and Diagnosis 显示文摘 | Ming Rao Haibin Yang Heming Yang | 1998 | Computers in Industry1998，，2： | 1 |
| 7 | Integrated Distributed Intelligent System Architecture for Incidents Monitoring and Diagnosis显示文摘 | Ming Rao Haibin Yang Heming Yang | 1998 | Computers in Industry1998，，5： | 1 |
| 8 | Integrated distrib- uted intelligent system architecture for incidents monitoring and diagnosis 显示文摘 | RAO M YANG Haibin YANG Heming | 1998 | Computers in Industry1998，37，2： | 1 |
| 9 | Two-photon 3D printed spring-based Fabry-Pérot cavity resonator for acoustic wave detection and imaging显示文摘Optical fiber microresonators have attracted considerable interest for acoustic detection because of their compact size and high optical quality.Here,we have proposed,designed,and fabricated a spring-based Fabry-Pérot cavity microresonator for highly sensitive acoustic detection.We observed two resonator vibration modes:one relating to the spring vibration state and the other determined by the point-clamped circular plate vibration mode.We found that the vibration modes can be coupled and optimized by changing the structure size.The proposed resonator is directly 3D printed on an optical fiber tip through two-photon polymerization and is used for acoustic detection and imaging.The experiments show that the device exhibits a high sensitivity and low noise equivalent acoustic signal level of 2.39 mPa∕Hz^(1∕2)at 75 kHz that can detect weak acoustic waves,which can be used for underwater object imaging.The results demonstrate that the proposed work has great potential in acoustic detection and biomedical imaging applications. | HEMING WEI ZHANGLI WU KEXUAN SUN HAIYAN ZHANG CHEN WANG KEMIN WANG TIAN YANG FUFEI PANG XIAOBEI ZHANG TINGYUN WANG SRIDHAR KRISHNASWAMY | 2023 | Photonics Research2023，11，5： | 0 |
| 10 | Phenolic rigid organic filler/isotactic polypropylene composites.I.Preparation显示文摘A novel phenolic rigid organic filler(KT)was melt-mixed with an isotactic polypropylene(iPP)to prepare a series of PP/KT composites,with or without maleic anhydride grafted polypropylene(MAPP)as compatilizer.The evolution of filler morphology during melt-mixing and melt-pressure processes was monitored by scanning electron microscope(SEM)and polarized optical microscope(POM).The influences of shear force,pressure time,filler content and MAPP concentration on the final filler dispersion were studied.We found that this rigid organic filler readily melted and dispersed homogenously into the iPP matrix through a fission-fusion process during the melt-mixing process.Thus a balanced dispersion,which was closely related to shear force and MAPP concentration,can be achieved.During the meltpressure process,parts of the filler particles combined gradually through a coalescence process.However,the incorporation of MAPP can effectively inhibit the tendency to coalesce and refine the filler particles sizes into nanoscale.Thus,a series of PP/KT composites with controllable filler particles size and narrow size distribution can be obtained just by adjusting process conditions and MAPP concentration.In addition,due to the in-situ formation mechanism,the filler phase possessed a typical solid true-spherical shape. | Dongming QI Lei YANG Minghua WU Heming LIN Kohhei NITTA | 2008 | Frontiers of Chemical Science and Engineering2008，2，3： | 0 |
| 11 | The Distribution and Potential Exposure Factors of Physical Activity Level Among Middle-Aged and Elderly Population—Six Communities,Beijing,China,October 2020 to January 2021显示文摘Summary What is already known about this topic?Available evidence suggested that 31%of the world’s population do not meet the minimum recommendations for physical activity.What is added by this report?The latest findings showed that physical activity level(PAL),metabolic equivalents(MET)in min/week with<4,500(low),4,500–6,000(moderate)and≥6,000(high)accounted for 45.72%,25.62%,and 28.66%of middle-aged and elderly population in Changchunyuan Community,Weixiuyuan Community,Zhongguanyuan Community,Yanbeiyuan Community,Kangzeyuan Community,and Xima Community,respectively.The moderate and high PAL was associated with a decreased risk of hypertension,cardiovascular disease,dyslipidemia,and poor sleep.What are the implications for public health practice?More attention should be given to the middle-aged population who may be at high risk of insufficient physical activity in urban environments as it is of public health significance for improving the community population health. | Heming Pei Ning Kang Fan Yang Xinming Song Gong Chen Dongmin Wang | 2022 | China CDC weekly2022，4，27： | 0 |
| 12 | Adult-born neurons in critical period maintain hippocampal seizures via local aberrant excitatory circuits显示文摘Temporal lobe epilepsy(TLE),one common type of medically refractory epilepsy,is accompanied with altered adult-born dentate granule cells(abDGCs).However,the causal role of abDGCs in recurrent seizures of TLE is not fully understood.Here,taking advantage of optogenetic and chemogenetic tools to selectively manipulate abDGCs in a reversible manner. | Liying Chen Yingwei Xu Heming Cheng Zhongxia Li Nanxi Lai Menghan Li Yeping Ruan Yang Zheng Fan Fei Cenglin Xu Jiao Ma Shuang Wang Yan Gu Feng Han Zhong Chen Yi Wang | 2023 | Signal Transduction and Targeted Therapy2023，8，7： | 0 |
| 13 | Interaction Between Memory Load and Experimental Design on Brain Connectivity and Network Topology显示文摘The conventional approach to investigating functional connectivity in the block-designed study usually concatenates task blocks or employs residuals of task activation.While providing many insights into brain functions,the block design adds more manipulation in functional network analysis that may reduce the purity of the blood oxygenation level-dependent signal.Recent studies utilized one single long run for task trials of the same condition,the so-called continuous design,to investigate functional connectivity based on task functional magnetic resonance imaging.Continuous brain activities associated with the single-task condition can be directly utilized for task-related functional connectivity assessment,which has been examined for working memory,sensory,motor,and semantic task experiments in previous research.But it remains unclear how the block and continuous design influence the assessment of task-related functional connectivity networks.This study aimed to disentangle the separable effects of block/continuous design and working memory load on task-related functional connectivity networks,by using repeated-measures analysis of variance.Across 50 young healthy adults,behavioral results of accuracy and reaction time showed a significant main effect of design as well as interaction between design and load.Imaging results revealed that the cingulo-opercular,fronto-parietal,and default model networks were associated with not only task activation,but significant main effects of design and load as well as their interaction on intra-and inter-network functional connectivity and global network topology.Moreover,a significant behavior-brain association was identified for the continuous design.This work has extended the evidence that continuous design can be used to study task-related functional connectivity and subtle brain-behavioral relationships. | Heming Zhang Xin Di Bart Rypma Hang Yang Chun Meng Bharat Biswal | 2023 | Neuroscience Bulletin2023，39，4： | 0 |
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