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Rayleigh wave phase velocities of South China block and its adjacent areas

Science China Earth Sciences 2016年第11期59卷 2165-2178页

作者： L Jian XIE zujun ZHENG Yong ZHA XiaoHui HU Rui ZENG XinFu Earthquake Administration of Jiangxi Province Nanchang 330039 China State Key Laboratory of Geodesy and Earth's Dynamics Institute of Geodesy and Geophysics Chinese Academy of Sciences Wuhan 430077 China

Using records of continuous seismic waveforms from 609 broadband seismic stations in the South China Block and its adjacent areas in 2010–2012, empirical Green's functions of surface waves were obtained from cross-correlation functions of ambient noise data between these stations. High quality phase velocity dispersion curves of Rayleigh waves were obtained using time-frequency analysis. These interstation dispersion curves were then inverted to build Rayleigh wave phase velocity maps at periods of 6–50 s. The results of phase velocity maps indicate that phase velocities at 6–10 s periods are correlated with the geological features in the upper crust. Major basins and small-scale grabens and basins display slow velocity anomalies; while most of the orogenic belts and the fold belts display high velocity anomalies. With the gravity gradient zone along Taihang Mountain to Wuling Mountain as the boundary for the phase velocity maps at period of 20–30 s, the western area mainly displays low velocity anomalies, while the eastern side shows high velocity anomalies. Phase velocities in the eastern South China Block south to the Qinling-Dabie orogenic belt is higher than that in the eastern North China Block to the north, which is possibly due to the differences of tectonic mechanisms between the North China Craton and the South China Block. The phase velocities at periods of40–50 s are possibly related to the lateral variations of the velocity structure in the lower crust and upper mantle: The low-velocity anomalies in the eastern part of the Tibetan Plateau are caused by the thick crust; while the Sichuan Basin and the southern part of the Ordos Basin display distinct high-velocity anomalies, reflecting the stable features of the lithosphere in these blocks. The lateral variation pattern of phase velocities in the southern part of the South China Block is not consistent with the surface trace of the block boundary in the eastern Yunnan Province and its vicinities. The pha

关键词： South China block Ambient noise Phase velocity tomography Crust and upper mantle

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Outage Performance of Cognitive AF Relay Networks with Imperfect CSI Based on Geometrical Analysis

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Chinese Journal of Electronics 2017年第5期26卷 1048-1056页

作者： LIU Shuai SUN Dechun LIU zujun YI Kechu YANG Hong WANG Kan State Key Laboratory of Integrated Services Networks Xidian University China Academy of Space Technology

This paper studies the outage performance of a cognitive Amplify-and-forward(AF) relay network subject to Rayleigh *** the condition of imperfect Channel state information(CSI) estimations of the links from the secondary system to the Primary user(PU),the closed-form upper and lower bounds of the outage probability are derived through a geometrical analysis *** asymptotic analysis of the outage probability is also derived in the high Signal-to-noise ratio(SNR)regime to gain additional insights on the *** simulation results corroborate our theoretical analysis,and the effectiveness of the geometrical analysis method is verified with the conventional approach as a *** asymptotic results are very tight with the analytical lower bound in the high SNR *** also can be observed from the simulation results that the impact of the number of relays as well as the imperfect CSI on the outage probability and the diversity order.

关键词： Cognitive relay networks Imperfect Channel state information(CSI) Geometrical analysis

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陆地棉脱水素蛋白GhDHN1的结构特征和无序性分析

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中国棉花 2017年第8期44卷 17-19,28页

作者：王俊娟阴祖军王德龙王帅王晓歌樊伟丽郭丽雪陈超叶武威中国农业科学院棉花研究所/棉花生物学国家重点实验室/农业部棉花生物学与遗传育种重点实验室河南安阳455000

利用生物信息学对陆地棉脱水素蛋白GhDHN1的氨基酸组成理化性质、保守结构域K片段以及无序性进行分析。结果表明,GhDHN1蛋白无明显跨膜结构,不是分泌蛋白,其2个序列相近的K片段均具有高度亲水性,属于部分无序性蛋白。推测GhDHN1的这些... 详细信息

利用生物信息学对陆地棉脱水素蛋白GhDHN1的氨基酸组成理化性质、保守结构域K片段以及无序性进行分析。结果表明,GhDHN1蛋白无明显跨膜结构,不是分泌蛋白,其2个序列相近的K片段均具有高度亲水性,属于部分无序性蛋白。推测GhDHN1的这些结构特性与其调控棉花响应低温胁迫有关。

关键词：棉花脱水素蛋白GhDHN1 结构特征 K片段无序性

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针刺联合血栓通与银杏叶提取物注射液治疗急性脑卒中临床观察

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中国中医药现代远程教育 2024年第6期22卷 130-132页

作者：方祖军李贤概周英华江西省万年县人民医院神经内科江西上饶335500

目的分析急性脑卒中患者采用针刺联合血栓通与银杏叶提取物注射液治疗的效果。方法回顾性选取2020年2月—2022年2月万年县人民医院急性脑卒中患者80例,依据应用方法分为针刺联合血栓通与银杏叶提取物注射液治疗组(联合用药组)、常规... 详细信息

目的分析急性脑卒中患者采用针刺联合血栓通与银杏叶提取物注射液治疗的效果。方法回顾性选取2020年2月—2022年2月万年县人民医院急性脑卒中患者80例,依据应用方法分为针刺联合血栓通与银杏叶提取物注射液治疗组(联合用药组)、常规用药组2组,各40例。分析2组神经功能缺损程度、独立生活能力、日常生活能力、临床疗效。结果联合用药组患者的美国国立卫生研究院卒中量表(NIHSS)评分、改良Rankin量表(mRS)评分均低于常规用药组(P<0.05)。联合用药组患者的改良Barthel指数(MBI)评分高于常规用药组(P<0.05)。联合用药组患者的总有效率92.50%(37/40)高于常规用药组的67.50%(27/40)(P<0.05)。结论急性脑卒中患者采用针刺联合血栓通与银杏叶提取物注射液治疗的效果较常规用药治疗效果显著。

关键词：急性脑卒中针刺疗法血栓通银杏叶提取物注射液

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广谱抗性基因Pi9导入改良水稻“大粒香”稻瘟病抗性的研究

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中国稻米 2024年第4期30卷 86-88,92页

作者：张习春李祖军唐会会王倩吴朝昕吴健强朱速松贵州省农业科学院水稻研究所贵阳550006

水稻品种大粒香以米质优、香味浓郁连续5次获“中国优质稻米博览交易会金奖”,但因高感稻瘟病,严重限制了其在生产上的应用。本研究以含有广谱抗性基因Pi9的空育131为父本,通过常规杂交、连续回交和分子标记辅助选择将Pi9导入大粒香中,... 详细信息

水稻品种大粒香以米质优、香味浓郁连续5次获“中国优质稻米博览交易会金奖”,但因高感稻瘟病,严重限制了其在生产上的应用。本研究以含有广谱抗性基因Pi9的空育131为父本,通过常规杂交、连续回交和分子标记辅助选择将Pi9导入大粒香中,创制株叶形态、千粒重、米质及香味等重要性状上与大粒香基本一致的改良株系。大粒香改良株系抗性鉴定结果表明,其稻瘟病抗性与大粒香相比显著提升,达到品种生产应用的抗性标准,实现对大粒香稻瘟病抗性的定向改良。

关键词：水稻大粒香 MAS Pi9 抗性鉴定定向改良

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陆地棉脱水素基因GhDHN1启动子序列分析

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中国棉花 2017年第5期44卷 10-12页

作者：王俊娟王德龙王帅阴祖军王晓歌樊伟莉郭丽雪郭晓宁叶武威中国农业科学院棉花研究所/棉花生物学国家重点实验室/农业部棉花生物学与遗传育种重点实验室河南安阳455000

为了筛选棉花抗逆转基因育种的候选启动子,根据陆地棉脱水素基因GhDHN1的cDNA序列和陆地棉基因组序列,利用生物信息学分析方法,获得棉花陆地棉脱水素基因GhDHN1启动子序列。结果表明,该启动子上多个位点含有启动子的基本元件TATA-box和C... 详细信息

为了筛选棉花抗逆转基因育种的候选启动子,根据陆地棉脱水素基因GhDHN1的cDNA序列和陆地棉基因组序列,利用生物信息学分析方法,获得棉花陆地棉脱水素基因GhDHN1启动子序列。结果表明,该启动子上多个位点含有启动子的基本元件TATA-box和CAAT-box,并含有非生物逆境胁迫响应元件、响应植物激素顺式作用元件、多种光调控相关的顺式作用元件以及胚乳表达顺式调控元件等。推测GhDHN1基因的启动子受光诱导,同时受低温和干旱胁迫等非生物逆境的诱导,参与棉花的生长发育。

关键词：陆地棉脱水素基因 GhDHN1 启动子序列分析

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Theoretical analysis on GaAs sub-cell doping concentration for triple-junction solar cells irradiated by proton based on TCAD simulation

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Optoelectronics Letters 2022年第12期18卷 723-729页

作者： LI Junwei JIA Weimin SHI Chengying WANG zujun LI Zhengcao Key Lab of Advanced Materials(MOE) School of Materials Science and EngineeringTsinghua UniversityBeijing100084China Xi’an Research Institute of High-Technology Xi’an710025China Northwest Institute of Nuclear Technology Xi’an710024China

The degradation on the GaInP/GaAs/Ge triple-junction solar cells was irradiated by proton, and the solar cells with various GaAs sub-cell doping concentrations are modeled by the technology computer aided design(TCAD) simulation. The degradation results of related electrical parameters and external quantum efficiency(EQE) are studied. The degradation mechanism irradiated by proton is discussed. The short-circuit current, maximum power and conversion efficiency decrease with the increasing of GaAs sub-cell doping concentration. When the base doping concentration of GaAs sub-cell is 1×1016cm-3, the degradation of short-circuit current is less than that of other base doping concentrations. Furthermore, under proton irradiation, with the increase of doping concentration of GaAs sub-cell, the open-circuit voltage first increases and then decreases. Meanwhile, when the base doping concentration of GaAs sub-cell is 2×10^(17)cm^(-3), the degradation of open-circuit voltage is less than that of other base doping concentrations. The research will provide the basic theories and device simulation method for GaInP/GaAs/Ge triple-junction solar cells radiation damage evaluation study and radiation hardening, and can provide guidance for the production of triple-junction solar cells in orbit.

关键词： doping irradiated junction

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植物生长期根部病害生防菌筛选方法改进及其装置研制

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广西师范大学学报（自然科学版） 2024年第2期42卷 200-215页

作者：黄植清刘莹儿黄名丽陈英绘尚常花陆祖军广西师范大学生命科学学院广西桂林541006 珍稀濒危动植物生态与环境保护教育部重点实验室(广西师范大学) 广西桂林541006

为克服室内筛选生防菌的方法往往忽略植物基础作用的弊端,本文比较双重培养法、液体介质筛选法和种苗基质筛选法的优劣,并在改进种苗基质筛选法的基础上研制新装置。该装置由耐高温(135℃)、高压(0.15 MPa)的500 mL PP组培瓶改装而成。... 详细信息

为克服室内筛选生防菌的方法往往忽略植物基础作用的弊端,本文比较双重培养法、液体介质筛选法和种苗基质筛选法的优劣,并在改进种苗基质筛选法的基础上研制新装置。该装置由耐高温(135℃)、高压(0.15 MPa)的500 mL PP组培瓶改装而成。组培瓶的柱状空间分为植物种植区、植物病原菌培养区和候选生防菌培养区,各区间以0.45μm硝酸纤维滤膜隔阻。植物种植区敞口、植物病原菌培养区和候选生防菌培养区以盖子密闭。本文装置以近似自然条件的植物根系分泌物和土壤渗出物作为基质筛选候选生防菌,获得的结果更可信;以菌体密度的变化反映病原菌和候选生防菌的拮抗效果,容易检测。该装置构造简单、成本低廉、使用方便,可用于各种植物根部病原菌生防菌的批量筛选,但不适用于植物叶片、茎秆病害的生防菌筛选。

关键词：病原菌生防菌筛选铜绿假单胞菌拮抗

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The Present Status and Prospect of Earthquake Focal Depth Locating

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Earthquake Research in China 2018年第3期32卷 330-343页

作者： Zheng Yong Xie zujun Hubei Subsurface Multi-scale Imaging Key Laboratory Institute of Geophysics and GeomaticsChina University of Geosciences(Wuhan)Wuhan 430074China State Key Laboratory of Geodesy and Geodynamics Institute of Geodesy and GeophysicsChinese Academy of SciencesWuhan 430074China

Locating an earthquakes focal depth is always a key project in seismology. Precise focal depth is of critical importance for evaluating seismic hazards, deciphering dynamic mechanisms of earthquake generating,estimating aftershock evolutions and risk,as well as monitoring nuclear tests. However,how we determine an accurate focal depth is always a challenge in seismological studies. Aiming to solve these problems, we analyzed and summarized the present status and the future development of earthquake focal depth locating. In this paper we first reviewed the present status of focal depth locating in the world,and summarized the frequently-used relocating methods and ideas at present,and introduced two types of focal depth relocating ideas: arrival time relocating and waveform modeling methods. For these ideas,we systematically described the S-P and the Pn-Pg methods that belong to arrival time method,and polarization focal depth locating and amplitude focal depth locating that belongs to waveform modeling,and further analyzed the advantages and limitations of these methods. Since the depth phase methods are highly sensitive to focal depth,and are relatively free from the uncertainties of crustal models,we mainly reviewed the depth phases of s Pm P,s PL,s Pn,and s Sn,and quantitatively evaluated their availabilities and characteristics. Second,we also discussed the effects of crustal velocity models on the reliability of focal depth locating,and reviewed the advancements of seismic tomography techniques over recent years. Finally,based on the present status of the progress on the focal depth locating,and studies of seismic velocity structures,we proposed an idea of combining multiple datasets and relocating methods,jointly utilizing seismologic and geodetic techniques to relocate focal depth,which should be the major research field in investigating focal depth and source parameters in the near future.

关键词： Focal depth relocating Arrival time locating Waveform modeling Depth phase Joint inversion

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On the Performance of Wireless-Powered Cooperative DF Relaying Networks with Imperfect CSI

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China Communications 2018年第11期15卷 79-92页

作者： Shuai Liu zujun Liu Dechun Sun Hong Yang Kechu Yi Kan Wang tate Key Laboratory of Integrated Services Networks Xidian University Xi'an 710071 China China Academy of Space Technology Beijing 100094 China Faculty of Computer Science and Engineering Xi'an University of Technology Xi'an 710048 China

This paper studies several performance metrics of a wireless-powered decode-and-forward(DF) relay network with imperfect channel state information(CSI). In particular, based on the time switching(TS) protocol, the energy-constrained relay harvesting energy from a power beacon(PB), and uses that harvested energy to forward the source information to destination. The closedform expression of the outage probability is firstly derived over Rayleigh fading channels. Then, the asymptotic analysis, throughput as well as the symbol error probability(SEP) are derived based on the expression of the outage probability. Next, both transmission power of the source and the power beacon are optimized through the throughput optimization. Finally, simulations are conducted to corroborate our theoretical analysis, and to reveal the impact of the transmission power of the source and PB as well as the imperfect CSI on the system performance.

关键词： energy harvesting imperfectchannel state information time switching per-formance analysis

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