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Chinese Physics B 2019年第6期28卷 465-471页

作者： jia-nan wei Chao-Hui He Pei Li Yong-Hong Li School of Nuclear Science and Technology Xi’an Jiaotong University

In this paper we investigate two techniques for single event effect(SEE) mitigation by using back junction and p^+buffer layer in non-deep trench isolation(DTI) domestic silicon–germanium heterojunction bipolar transistors(SiGe HBTs)based on technology computer aided design(TCAD) simulation. The effectiveness of the two mitigation techniques and the influence of various structure parameters are investigated. Simulation results indicate that the two techniques are more effective in reducing collector charge collection induced by heavy ions striking at positions outside the collector–substrate(C–S) junction where charge collection is dominated by diffusion. By properly adjusting the parameters, charge collection of events outside the C–S junction can be reduced by more than an order of magnitude, while charge collection of events in the device center is halved without affecting the direct current(DC) and alternating current(AC) characteristics of the SiGe HBTs.

关键词： silicon–germanium HBT single event effect mitigation technique TCAD simulation

Impact of proton-induced alteration of carrier lifetime on single-event transient in SiGe heterojunction bipolar transistor

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Chinese Physics B 2019年第7期28卷 375-380页

作者： jia-nan wei Chao-Hui He Pei Li Yong-Hong Li Hong-Xia Guo School of Nuclear Science and Technology Xi'an Jiaotong University Xi'an 710049 China State Key Laboratory of Intense Pulsed Irradiation Simulation and Effect Northwest Institute of Nuclear Technology Xi'an 710024 China

This paper presents an investigation into the impact of proton-induced alteration of carrier lifetime on the singleevent transient(SET) caused by heavy ions in silicon–germanium heterojunction bipolar transistor(SiGe HBT).The ioninduced current transients and integrated charge collections under different proton fluences are obtained based on technology computer-aided design(TCAD) *** results indicate that the impact of carrier lifetime alteration is determined by the dominating charge collection mechanism at the ion incident position and only the long-time diffusion process is *** a proton fluence of 5 × 1013 cm-2, almost no change is found in the transient feature, and the charge collection of events happened in the region enclosed by deep trench isolation(DTI), where prompt funneling collection is the dominating ***, for the events happening outside DTI where diffusion dominates the collection process, the peak value and the duration of the ion-induced current transient both decrease with increasing proton fluence, leading to a great decrease in charge collection.

关键词： silicon–germanium heterojunction bipolar transistor(SiGe HBT) proton irradiation minority carrier lifetime single-event transient technology computer-aided design(TCAD) simulation

Impact of neutron-induced displacement damage on the single event latchup sensitivity of bulk CMOS SRAM

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Chinese Physics B 2017年第1期26卷 542-546页

作者： Xiao-Yu Pan Hong-Xia Guo Yin-Hong Luo Feng-Qi Zhang Li-Li Ding jia-nan wei Wen Zhao Northwest Institute of Nuclear Technology Xi＇an 710024 China

Since the displacement damage induced by the neutron irradiation prior has negligible impact on the performance of the bulk CMOS SRAM, we use the neutron irradiation to degrade the minority carrier lifetime in the regions responsible for latchup. With the experimental results, we discuss the impact of the neutron-induced displacement damage on the SEL sensitivity and qualitative analyze the effectiveness of this suppression approach with TCAD simulation.

关键词： displacement damage neutron irradiation single event latchup TCAD simulation

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含羞草与草莓对电脉冲刺激的响应

植物生理学报 2017年第4期53卷 649-656页

作者：贾克楠魏云波王忆北航实验学校中学部北京100191 中国农业大学园艺学院北京100193

本研究以敏感植物含羞草和非敏感植物草莓为试材,对其能否对电脉冲刺激做出响应及其规律做了初步研究。结果发现,含羞草对电脉冲刺激非常敏感,微弱的单脉冲刺激可以导致小叶关闭和叶轴下垂。连续脉冲刺激可延缓草莓果实发育进程,并诱发J... 详细信息

本研究以敏感植物含羞草和非敏感植物草莓为试材,对其能否对电脉冲刺激做出响应及其规律做了初步研究。结果发现,含羞草对电脉冲刺激非常敏感,微弱的单脉冲刺激可以导致小叶关闭和叶轴下垂。连续脉冲刺激可延缓草莓果实发育进程,并诱发JA积累,但对IAA和ABA含量没有显著影响。而且连续电脉冲刺激可抑制草莓果实成熟相关基因的表达,如色素代谢关键基因FaCHS和FaDFR,香味代谢相关基因FaQR和细胞壁代谢相关基因FaPG和FaEXPs等。以上结果表明,敏感植物对电脉冲刺激的应答反应体现快速的机械运用,而非敏感植物可体现在基因表达、生理代谢和生长发育。

关键词：电脉冲刺激应答反应草莓含羞草

Settlement Estimation of Pile Foundation in Soft Soils

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Settlement Estimation of Pile Foundation in Soft Soils

Effects on Surface Molecules on Macrophages of Extracellular HSPs Induced by Polyporud Polysaccharide/Bacillus Calmette-guerin from T24 Human Bladder Cancer Cell Line

作者： Shao-Ming Huang Jie Pei Zhong-Yuan jia Ru-nan wei Shanghai Municipal Institute of Civil Archetural Design,Shanghai

＜正＞A practical method was proposed to estimate the settlements for both single pile and pile group in soft *** forces along pile shaft were as- sumed to be replaced by trapezoid linear distribution forces acting on axis of pi- *** stresses in the strata around and beneath a pile were evaluated by an exte- nsion of a method proposed by *** based on *** solution of a point load at the interior of an elastic solid,and the settlement is estimated on conve- ntional one-dimentional *** analysis for pile group is extension of that for a single *** comparisons between observed and estimated settlements were made,and it can be seen that the estimated results agreed fairly well with the ob- served results.

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Effects on Surface Molecules on Macrophages of Extracellular...

Passive activity enhances residual control ability in patients with complete spinal cord injury

2008年全国生物化学与分子生物学学术大会

作者： Xing Zeng Yu Huang jia-nan wei Ling Han Dan Zhou (The Second Affiliated Hospital of Guangzhou University of TCM,Guangzhou 510120 P.R.China)

Objective:To explore the mechanism how the innate immune response to BCG/PPS intracavitary perfu- sion was initiated,focusing on the role of heat shock protein induced by BCG/PPS via activating TLR signal pathway to regulate the surface molecules of ***:*** production of HSPs induced by BCG/PPS from human T24 bladder cancer cell line culture suspensions were detected with ***

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Neural Regeneration Research 2025年第8期20卷 2337-2347页

作者： Yanqing Xiao Mingming Gao Zejia He jia Zheng Hongming Bai jia-Sheng Rao Guiyun Song wei Song Xiaoguang Li Beijing Key Laboratory for Biomaterials and Neural Regeneration Beijing Advanced Innovation Center for Biomedical EngineeringSchool of Biological Science and Medical EngineeringBeihang UniversityBeijingChina Department of Rehabilitation Evaluation China Rehabilitation Research CenterBeijingChina Cardiac Center Beijing Children’s HospitalCapital Medical UniversityBeijingChina The State Key Laboratory of Virtual Reality Technology and Systems Beihang UniversityBeijingChina Department of Rehabilitation Engineering China Rehabilitation Science InstituteBeijingChina

Patients with complete spinal cord injury retain the potential for volitional muscle activity in muscles located below the spinal injury ***,because of prolonged inactivity,initial attempts to activate these muscles may not effectively engage any of the remaining neurons in the descending pathway.A previous study unexpectedly found that a brief clinical round of passive activity significantly increased volitional muscle activation,as measured by surface *** this study,we further explored the effect of passive activity on surface electromyographic signals during volitional control tasks among individuals with complete spinal cord *** patients with chronic complete thoracic spinal cord injury were *** electromyography data from eight major leg muscles were acquired and compared before and after the passive activity *** results indicated that the passive activity led to an increased number of activated volitional muscles and an increased frequency of *** the cumulative root mean square of surface electromyography amplitude for volitional control of movement showed a slight increase after passive activity,the difference was not statistically *** findings suggest that brief passive activity may enhance the ability to initiate volitional muscle activity during surface electromyography tasks and underscore the potential of passive activity for improving residual motor control among patients with motor complete spinal cord injury.

关键词： complete spinal cord injury cycle training epidural electrical stimulation motor training passive activity physiological state spinal cord circuit surface electromyography volitional control task

液体火箭发动机反力式涡轮动叶进口攻角的研究

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推进技术 2002年第5期23卷 383-386页

作者：张国舟俞南嘉魏沫北京航空航天大学宇航学院北京100083 北京丰源机械研究所北京100076

针对高性能分级燃烧(闭式)循环液体火箭发动机用反力式涡轮的特点,对所设计的动叶叶栅S1流面的准三元流气动分析和已有动叶平面叶栅的亚声速风洞试验,研究了反力式涡轮动叶正负攻角对叶栅内的绕流和能量损失的影响。结果表明:对于给定... 详细信息

针对高性能分级燃烧(闭式)循环液体火箭发动机用反力式涡轮的特点,对所设计的动叶叶栅S1流面的准三元流气动分析和已有动叶平面叶栅的亚声速风洞试验,研究了反力式涡轮动叶正负攻角对叶栅内的绕流和能量损失的影响。结果表明:对于给定的来流方向,为得到连续收敛的叶栅几何通道和小的能量损失,动叶应采用正攻角设计。对已有的连续收敛的动叶叶栅,应采用负攻角流入工况,能量损失小。

关键词：反力式涡轮涡轮转子进口攻角液体推进剂火箭发动机

Deciphering the role of ultra-low-loaded rhodium in NiFe-MIL-53 for superior oxygen evolution reaction

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Journal of Energy Chemistry 2025年第1期100卷 77-86页

作者： Jinzhi jia Jinhua Zhang Kailu Guo Lanyue Zhang Gening Du Hao You Junfeng Huang Mudong Tu Hua Li Yong Peng wei Dou Cailing Xu State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering School of Materials and Energy Lanzhou University College of Chemistry and Chemical Engineering Luoyang Normal University

Designing highly active and stable electrocatalysts of oxygen evolution reaction （OER） is one of the crucial *** this study,a novel OER electrocatalyst,NiFe-MIL-53 modified with ultra-low rhodium（Rh@NiFe-MIL-53）,is successfully prepared via the hydrothermal ***-situ Raman spectroscopy and electrochemical impedance spectroscopy reveal that the doped Rh accelerates the phase transformation of NiFe-MIL-53 and the in-situ formed Rh@NiFeOOH is the actual active *** importantly,the enhanced reversibility of electrochemical reconstruction between NiFeOOH and NiFe（OH）2after doping Rh is beneficial for improving the electrochemical stability of the catalyst.X-ray photoelectron spectroscopy spectra show the strong electronic interaction between single-atom Rh and Ni/Fe in Rh@***,theoretical calculations confirm that the integration of single-atom Rh into the NiFeOOH successfully reduces the band gap,regulates the d-band center （εd）,accelerates the charge transfer,and optimizes the adsorption behavior of oxygen-containing intermediates,thereby lowering the energy barrier of rate-determining ***,the optimized Rh@NiFe-MIL-53 exhibits excellent OER activity （240 mV） with a small Tafel slope of 48.2 mV dec-1and long-term durability (over1270 h at 10 m A cm-2and 110 h at 200 mA cm-2).This work presents a new perspective on designing highly efficient OER electrocatalysts.

关键词： NiFe-MIL-53 Rh Electrochemical reconstruction Catalytic mechanism Oxygen evolution reaction

低空遥感平台中POS姿态角与外方位角元素间的转换方法

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测绘与空间地理信息 2015年第6期38卷 137-139页

作者：贾伟楠谭玉敏北京航空航天大学交通科学与工程学院北京100191

低空遥感平台中所用的INS角度系统与摄影测量外方位元素中的角度系统不同,需要经过转换和纠正。本文分析了两种角度系统的概念和关系,并推导出了二者间转化的数学公式。经过设计分组实验验证,证明方法可行有效,且用于影像预处理的改善... 详细信息

低空遥感平台中所用的INS角度系统与摄影测量外方位元素中的角度系统不同,需要经过转换和纠正。本文分析了两种角度系统的概念和关系,并推导出了二者间转化的数学公式。经过设计分组实验验证,证明方法可行有效,且用于影像预处理的改善效果明显。

关键词：低空遥感姿态测量外方位元素