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Expressional and Biochemical Characterization of Rice Disease Resistance Gene Xa3/Xa26 Family

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Journal of Integrative Plant Biology 2007年第6期49卷 852-862页

作者： Songjie Xu Yinglong Cao Xianghua li shiping Wang State Key Laboratory of Crop Genetic Improvement National Center for Gene Research of Plant (Wuhan) Huazhong Agricultural University Wuhan 430070 China

The rice （Oryza sativa L.） Xa3/Xa26 gene, conferring race-specific resistance to bacterial blight disease and encoding a leucine-rich repeat （LRR） receptor kinase-like protein, belongs to a multigene family consisting of tandem clustered homologous genes, colocalizing with several uncharacterized genes for resistance to bacterial blight or fungal blast. To provide more information on the expressional and biochemical characteristics of the Xa3/Xa26 family, we analyzed the family members. Four Xa3/Xa26 family members in the indica rice variety Teqing, which carries a bacterial blight resistance gene with a chromosomal location tightly linked to Xa3/Xa26, and five Xa3/Xa26 family members in the japonica rice variety Nipponbare, which carries at least one uncharacterized blast resistance gene, were constitutively expressed in leaf tissue. The result suggests that some of the family members may be candidates of these uncharacterized resistance genes. At least five putative N-glycosylation sites in the LRR domain of XA3/XA26 protein are not glycosylated. The XA3/XA26 and its family members MRKa and MRKc all possess the consensus sequences of paired cysteines, which putatively function in dimerization of the receptor proteins for signal transduction, immediately before the first LRR and immediately after the last LRR. However, no homo-dimer between the XA3/XA26 molecules or hetero-dimer between XA3/XA26 and MRKa or MRKc were formed, indicating that XA3/XA26 protein might function either as a monomer or a hetero-dimer formed with other protein outside of the XA3/XA26 family. These results provide valuable information for further extensive investigation into this multiple protein family.

关键词： bacterial blight expression glycosylation multigene family Oryza sativa.

The Algorithm of Fractal Image Block Coding Based on the Ortho Difference Sum

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The Algorithm of Fractal Image Block Coding Based on the Ort...

Vascular dementia has the highest hospitalisation rate in China:a nationwide hospital information system study

第25届中国控制与决策会议

作者： li shiping liU lijing College of Information Science and Engineering Northeastern University

ISBN: (纸本)9781467355339

According to the relationship between matching mean square error and ortho difference sum, range can find the best matching defined-domain within the narrower scope of search. At the same time, the defined-domain having smaller standard deviation will be excluded within the entire codebooks previously and all the ranges having smaller standard deviation will be substituted by their mean values during the decoding process. The experiments show that, the algorithm that I have come up with in this essay improves respectively four times and six times in coding speed compared with cross-track algorithm and variance algorithm, meanwhile, the peak’s signal-noise ratio of the decoded images is slightly improved.

关键词： Image coding Fractal the Ortho difference sum Cross trace Variance

来源： cnki会议评论

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Stroke & Vascular Neurology 2023年第1期8卷 59-68页

作者： Yue Wang shiping li Qi Zhou Yongjun Wang Jiong Shi Department of Neurology Beijing Tiantan HospitalBeijingChina National Clinical Research Center for Neurological Diseases Beijing Tiantan HospitalBeijingChina Advanced Innovation Center for Human Brain Protection Capital Medical UniversityBeijingChina

Background Although vascular dementia(VaD)is not uncommon in the hospital,most studies on VaD are community *** study on VaD is the first to use a national hospital information system(HIS)in *** This study was a hospital population-based cohort study,and data were acquired from the Hospital Quality Monitoring System,a Chinese national database that covers 1531 tertiary hospitals in *** medical records in the HIS included demographic information,diagnoses,procedures,expenses,*** was diagnosed by hospital attending physicians and identified by the International Classification of Diseases(ICD)10 code(F01.0-F01.9).Results 1259(82.23%)tertiary hospitals were included in this study,and 274230 hospitalisation records of 123700 VaD patients from 2016 to 2018 were identified for ***(51.27%)was the most common type of dementia in hospitalised *** age-adjusted and sex-adjusted hospital incidence of VaD was estimated to be 2.97 per 100000 person-years(95%CI 2.92 to 3.02).The mean age of VaD patients admitted to hospitals was 74.13±10.88,with more male(61.0%)*** main comorbidities were hypertension(67.2%),heart disease(63.6%)and cerebral infarction(55.5%).The mortality rate of VaD in hospital was 28.91‰(95%CI 28.0 to 29.9)between 2016 and *** top 1 cause of death due to VaD was pneumonia and other respiratory *** VaD is the most common form of dementia in hospitalised *** casts huge burdens on affected patients and their *** risk factors are prevalent in VaD *** these factors is essential to improve patient *** leading causes of death by VaD are pneumonia and other respiratory *** care and the management of respiratory illness are critical for VaD care in the hospital.

关键词： Vascular admitted nationwide

Dynamic linear calibration method for a wide range neutron flux monitor system in ITER

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Nuclear Science and Techniques 2013年第4期24卷 57-60页

作者： li shiping XU Xiufeng CAO Hongrui YANG Qingwei YIN Zejie State Key Laboratory of Particle Detection and Electronics University of Science andTechnology of China Department of Modern Physics University of Science and Technology of China Southwestern Institute of Physics

As a key part of the diagnosis system in the International Thermonuclear Experimental Reactor(ITER),the neutron flux monitor(NFM),which measures the neutron intensity of the fusion reaction,is a Counting-Campbelling system with a large dynamic counting range.A dynamic linear calibration method is proposed in this paper to solve the problem of cross-over between the different counting and Campbelling channels,and improve the accuracy of the cross-calibration for long-term *** experimental results show that the NFM system with the dynamic linear calibration system can obtain the neutron flux of the fusion reactor in real time and realize the seamless measurement area connection between the two channels.

关键词：动态非线性监测系统中子通量校正方法 ITER 国际热核实验反应堆聚变反应堆组成部分

Microwave response characteristics and influencing factors of ores based on dielectric properties of synthetic samples

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Journal of Rock Mechanics and Geotechnical Engineering 2022年第2期14卷 315-328页

作者： Feng lin Xia-Ting Feng Chengxiang Yang shiping li Jiuyu Zhang Xiangxin Su Tianyang Tong Key Laboratory of Ministry of Education on Safe Mining of Deep Metal Mines Northeastern UniversityShenyang110819China

In order to understand the influence of different factors on the microwave response characteristics of ores,the effects of electrical conductivity,metal mineral content,compactness,metal mineral distribution,microwave frequency and temperature on the dielectric properties of synthetic ores(metal mineral and quartz)were *** heating tests were carried out on three types of natural ores(Hongtoushan copper ore,Sishanling iron ore and Dandong gold ore)with significant differences in metal mineral *** test results showed that under microwave irradiation,the stronger the electrical conductivity of the metal minerals,the smaller the penetration depth in synthetic *** those metal minerals with lower electrical conductivity,the microwave absorption coefficient of the synthetic samples increases with increasing metal mineral *** those metal minerals with higher electrical conductivity,the microwave absorption coefficient of the samples first increases and then decreases as the metal mineral content *** the metal minerals are distributed in layers,the penetration depth is much less than that given a uniform *** penetration depth in the sample at microwave frequency of 915 MHz is greater than that at 2.45 *** higher the electrical conductivity of metal minerals used in synthetic ores,the higher the high-temperature sensitivity of electromagnetic shielding coefficient(0.C-500.C).The Hongtoushan copper ore with high metal mineral content exhibits obvious size *** effects of ore structure and crystal particle size on the distribution characteristics of microcracks were *** on the test results,a quantitative prediction model of microwave sensitivity of ore was proposed,which provides guidance for the prediction of ore heating effect and the selection of microwave heating sequence of ore.

关键词： Metal minerals Electrical conductivity Metal mineral content Synthetic ore Prediction model

An open-end high-power microwave-induced fracturing system for hard rock

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Journal of Rock Mechanics and Geotechnical Engineering 2023年第12期15卷 3163-3172页

作者： Xia-Ting Feng Jiuyu Zhang Feng lin Chengxiang Yang shiping li Tianyang Tong Xiangxin Su Key Laboratory of Ministry of Education on Safe Mining of Deep Metal Mines Northeastern UniversityShenyang110819China

Microwave pre-treatment is considered as a promising technique for alleviating cutter wear. This paper introduces a high-power microwave-induced fracturing system for hard rock. The test system consists of a high-power microwave subsystem (100 kW), a true triaxial testing machine, a dynamic monitoring subsystem, and an electromagnetic shielding subsystem. It can realize rapid microwave-induced fracturing, intelligent tuning of impedance, dynamic feedback under strong microwave fields, and active control of microwave parameters by addressing the following issues: the instability and insecurity of the system, the discharge breakdown between coaxial lines during high-power microwave output, and a lack of feedback of rock-microwave response. In this study, microwave-induced surface and borehole fracturing tests under true triaxial stress were carried out. Experimental comparisons imply that high-power microwave irradiation can reduce the fracturing time of hard rock and that the fracture range (160 mm) of a 915-MHz microwave source is about three times that of 2.45 GHz. After microwave-induced borehole fracturing, many tensile cracks occur on the rock surface and in the borehole: the maximum reduction of the P-wave velocity is 12.8%. The test results show that a high-power microwave source of 915 MHz is more conducive to assisting mechanical rock breaking and destressing. The system can promote the development of microwave-assisted rock breaking equipment.

关键词： Hard rock engineering High-power microwave Microwave intelligent fracturing Dynamic feedback True triaxial stress

A novel true triaxial test system for microwave-induced fracturing of hard rocks

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Journal of Rock Mechanics and Geotechnical Engineering 2021年第5期13卷 961-971页

作者： Xia-Ting Feng Jiuyu Zhang Chengxiang Yang Jun Tian Feng lin shiping li Xiangxin Su Key Laboratory of Ministry of Education on Safe Mining of Deep Metal Mines Northeastern UniversityShenyang110819China

This study introduces a test system for microwave-induced fracturing of hard rocks under true triaxial *** test system comprises a true triaxial stress loading system,an open-ended microwaveinduced fracturing system,a data acquisition system,an acoustic emission(AE)monitoring system,and an auxiliary specimen loading ***-induced surface and borehole fracturing tests under true triaxial stress were fulfilled for the first time,which overcomes the problem of microwave leakage in the coupling loading of true triaxial stress and *** developing the dynamic monitoring system,the thermal response and fracture evolution were obtained during microwave *** monitoring system includes the infrared thermometry technique for monitoring rock surface temperature,the distributed optic fiber sensing technique for monitoring temperature in borehole in rock,the AE technique and two-dimensional digital speckle correlation technique for monitoring the evolution of thermal damage and the rock fracturing *** validate the advantages of the test system and investigate the characteristics of microwave-induced fracturing of hard rocks,the study demonstrates the experimental methods and results for microwave-induced surface and borehole fracturing under true triaxial *** results show that thermal cracking presented intermittent characteristics(calm eactiveecalm)during microwave-induced surface and borehole fracturing of *** addition,true triaxial stress can inhibit the development and distribution of thermal cracks during microwave-induced surface *** microwave-induced borehole fracturing occurs,it promotes the distribution of thermal cracks in rock,but inhibits the width of *** results also prove the reliability of the test system.

关键词： Deep hard rock engineering True triaxial apparatus Microwave-induced fracturing of hard rocks Electromagnetic compatibility Dynamic monitoring Evolution of rock fracturing

Research on Strong Pulsed Electromagnetic Field Test Method by Time-frequency Combination

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高电压技术 2013年第10期39卷 2471-2476页

作者： TANG shiping CAI Mingjuan li Jianxuan Electromagnetic Compatibility Research and Test Center of Navy Shanghai 200235 China

Many conventional methods of testing strong and pulsed electromagnetic fields,the ones used in radars for example,had deficiencies due to the difficulty in obtaining simultaneous information about the electromagnetic field's peak both in the time domain and in the frequency *** regard to this problem,after analyzing the time-domain and the frequency-domain characteristics of radar pulsed signals,we propose a new time-frequency combination test method based on the correction of the test parameters,as well as its correction method at different *** test method is applied in a quick test of a high-power pulsed radar signal,and the corrected results have error less than 1 dB in both the time domain and the frequency domain,which indicates that the proposed time-frequency combined method is effective in testing strong and pulsed electromagnetic fields.

关键词：脉冲电磁场测试方法时频频域特性雷达信号高功率脉冲传统方法脉冲信号

Simulation and calibration of the response function of multi-sphere neutron spectrometer

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Nuclear Science and Techniques 2013年第6期24卷 105-108页

作者： JIANG Xiaofei CHEN Chao CAO Jing CAO Hongrui li shiping SONG Xianying YIN Zejie State Key Laboratory of Particle Detection and Electronics University of Science and Technology of China Department of Modern Physics University of Science and Technology of China Southwestern Institute of Physics

In order to realize the on-line real-time measurement of neutron spectrum of ITER fusion,this paper presents a multi-sphere spectrometer system which consists of eight thermal neutron detectors,namely SP9 3He proportional counter,embedded in eight different diameter polyethylene *** response function of eight polyethylene spheres of multi-sphere neutron spectrometer was calculated after the simulation of the neutron transport processes in multi-sphere spectrometer by adopting software *** peak of the response function is in the low energy region for smaller diameter polyethylene *** the polyethylene sphere diameter increased,the peak of the response function moves to the high energy *** experimental calibration adopts 241Am-Be neutron *** relative error between normalized data of experiment 4πsolid angle counts and normalized data of simulated detection efficiency of 4in to 8in polyethylene sphere is from 1.152%to 12.222%.The experimental results verify the response function of the *** these results provide a theoretical and experimental basis for solving the on-line real-time neutron spectrum of ITER fusion.

关键词：响应函数中子谱仪仿真在线实时测量正比计数管数据归一化校准 Geant4