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Artificially triggered lightning and its characteristic discharge parameters in two severe thunderstorms

Science China Earth Sciences 2007年第8期50卷 1241-1250页

作者： QIE XiuShu zhang qilin ZHOU YunJun FENG GuiLi zhang TingLong YANG Jing KONG XiangZhen XIAO QingFu WU ShuJun Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Sciences Lanzhou 730000 China

The lightning-induced-damages in the mid-latitude regions are usually caused during severe thunderstorms. But the discharge parameters of natural lightning are difficult to be measured. Five lightning flashes have been artificially triggered with the rocket-wire technique during the passage of two severe thunderstorms. The discharge current and close electric field of return stroke in artificially triggered lightning have been obtained in microsecond time resolution by using current measuring systems and electric field change sensors. The results show that the five triggered lightning flashes include 1 to 10 return strokes, and the average return stroke current is 11.9 kA with a maximum of 21.0 kA and a minimum of 6.6 kA, similar to the subsequent return strokes in natural lightning. The half peak width of the current waveform is 39 us, which is much larger than the usual result. The peak current of stroke I_p(kA) and the neutralized charge Q(C) has a relationship of I_p = 18.5Q^(0.65). The radiation field of return stroke is 5.9 kV ? m^(-1) and 0.39 kV ? m^(-1) at 60 m and 550 m, respectively. The radiation field decreases as r^(-1.119) with increase of horizontal distance r from the discharge channel. Based on the well-accepted transmission line model, the speed of return stroke is estimated to be about 1.4 × 10~8m·s^(-1), with a variation range of (1.1-1.6)×10~8m·s^(-1). Because of the similarities of the triggered lightning and natural lightning, the results in this article can be used in the protection design of natural lightning.

关键词： artificially triggered lightning characteristic discharge parameters current waveform electric field change in close distance severe thunderstorm

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Characteristics and mathematical models of the thin-layer drying of paddy rice with low-pressure superheated steam

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International Journal of Agricultural and Biological Engineering 2023年第1期16卷 273-282页

作者： Yan Li Gang Che Lin Wan qilin zhang Tianqi Qu Fengzhou Zhao College of Engineering Heilongjiang Bayi Agricultural UniversityDaqing 163319HeilongjiangChina Heilongjiang Key Laboratory of Intelligent Agricultural Machinery Equipment Daqing 163319HeilongjiangChina College of Agriculture Heilongjiang Bayi Agricultural UniversityDaqing 163319HeilongjiangChina

Drying paddy with low-pressure superheated steam(LPSS)can effectively increase theγ-aminobutyric acid content in *** study aimed to investigate the characteristics and mathematical models(MMs)of thin-layer drying of paddy with *** experimentally obtained data wereﬁtted by nonlinear regression with 5 MMs commonly used for thin-layer drying to calculate the goodness of fit of the ***,the thin-layer drying of paddy with LPSS was modeled with two machine learning methods as a Bayesian regularization back propagation(BRBP)neural network and a support vector machine(SVM).The results showed that paddy drying with LPSS is a reduced-rate drying *** drying temperature and operating pressure have a significant impact on the drying *** the same pressure,increasing the drying temperature can accelerate the drying *** the same temperature,increasing the operating pressure can accelerate the drying *** comparison of the model evaluation indexes showed that 5 common empirical MMs(Hederson and Pabis,Page,Midilli,Logarithmic,and Lewis)for thin-layer drying can achieve excellent fitting effects for a single experimental ***,the regression fitting of the indexes by calculating the coefficient(s)of each model showed that the empirical MMs produce poor fitting *** BRBP neural network-based model was slightly better than the SVM-based model,and both were significantly better than the empirical MM(the Henderson and Pabis model),as evidenced by a comparison of the training root mean square error(RMSE),testing RMSE,training mean absolute error(MAE),testing MAE,training R2,and testing R2 of the Henderson and Pabis model,the BRBP neural network model,and the SVM-based *** results indicate that the MMs established by the two machine learning methods can better predict the moisture content changes in the paddy samples dried by LPSS.

关键词： paddy low-pressure superheated steam drying mathematical model characteristic

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重庆江北机场T3B航站楼大厅屋盖钢结构提升施工技术

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施工技术（中英文） 2024年第2期53卷 1-6页

作者：王洽亲张其林罗晓群苏芳洲重庆机场集团有限公司重庆401120 同济大学上海200092 江苏沪宁钢机股份有限公司江苏宜兴214231

重庆江北机场T3B航站楼大厅屋盖钢结构为异形三维曲面造型焊接球网架。由于周边飞机不停航,且由于构造复杂、结构高差大、跨度大、杆件数量多,给屋盖钢结构施工带来很大挑战。基于方案探讨和专家论证,提出一种优化施工方案:大厅钢屋盖划... 详细信息

重庆江北机场T3B航站楼大厅屋盖钢结构为异形三维曲面造型焊接球网架。由于周边飞机不停航,且由于构造复杂、结构高差大、跨度大、杆件数量多,给屋盖钢结构施工带来很大挑战。基于方案探讨和专家论证,提出一种优化施工方案:大厅钢屋盖划为7个提升分区,每个分区在楼面拼装为提升小分块,通过二次及多次累积提升进行施工。施工前运用BIM技术进行工序预演,并采用3D3S,MIDAS Gen软件进行数值模拟分析,为施工的准确性和安全性提供有力支撑。

关键词：机场航站楼钢结构屋盖网架拼装提升数值模拟

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A Review of Atmospheric Electricity Research in China

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Advances in Atmospheric Sciences 2015年第2期32卷 169-191页

作者： QIE Xiushu zhang Yijun YUAN Tie zhang qilin zhang Tinglong ZHU Baoyou LU Weitao MA Ming YANG Jing ZHOU Yunjun FENG Guili Key Laboratory of Middle Atmosphere and Global Environment Observation Institute of Atmospheric PhysicsChinese Academy of Sciences Laboratory of Lightning Physics and Protection Engineering Chinese Academy of Meteorological Sciences College of Atmospheric Science Lanzhou University College of Atmospheric Physics Nanjing University of Information Technology Laboratory for Climate Environment and Disasters of Western China Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Sciences School of Earth and Space Sciences University of Science and Technology of China College of Atmospheric Sciences Chengdu University of Information Technology Shandong Research Institute of Meteorology

The importance of atmospheric electricity research has been increasingly recognized in recent decades. Research on atmospheric electricity has been actively conducted since the 1980 s in China. Lightning physics and its effects, as important branches of atmospheric electricity, have received more attention because of their significance both in scientific research and lightning protection applications. This paper reviews atmospheric electricity research based primarily on ground-based field experiments at different regions in China in the last decade. The results described in this review include physics and effects of lightning, rocket-triggered lightning and its physical processes of discharge, thunderstorm electricity on the Tibetan Plateau and its surrounding areas, lightning activity associated with severe convective storms, the effect and response of lightning to climate change, numerical simulation of thunderstorm electrification and lightning discharge, lightning detection and location techniques, and transient luminous events above thunderstorms.

关键词： atmospheric electricity lightning physics rocket-triggered lightning thunderstorm charge structure lightning location techniques

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脑电图在抑郁症中的应用研究进展

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临床心身疾病杂志 2024年第3期30卷 123-127页

作者：刘娟陈敏洁张琪林罗蔚锋日照市人民医院山东日照276800 张家港市第三人民医院江苏张家港215600 苏州大学附属第二医院江苏苏州215004

抑郁症是一种多重机制参与的、以心情低落为主要症状的疾病。目前对抑郁症的识别和诊断很大程度上依赖于主观判断,尚缺乏客观有效的评估手段。随着脑电信号分析及处理技术的不断发展,不同波形频带能级改变与抑郁症的诊断、预测治疗效果... 详细信息

抑郁症是一种多重机制参与的、以心情低落为主要症状的疾病。目前对抑郁症的识别和诊断很大程度上依赖于主观判断,尚缺乏客观有效的评估手段。随着脑电信号分析及处理技术的不断发展,不同波形频带能级改变与抑郁症的诊断、预测治疗效果有关。因此,文章回顾了近几年有关脑电图对抑郁症诊断的相关研究,对脑电图在抑郁症中的应用效果进行分析总结,旨在为抑郁症的辅助诊断与治疗提供依据。

关键词：抑郁症脑电图诊断

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Dispersion of CoCl_2 into γ-Al_2O_3 Studied by Positron

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Wuhan University Journal of Natural Sciences 2009年第5期14卷 425-429页

作者： LI Wei zhang qilin ZHU Jun LUO Xihui School of Physics and Technology Wuhan University Wuhan 430072 Hubei China Fushun Research Institute of Petroleum and Petrochemicals Fushtm 113001 Liaoning China

Co^2＋/γ-Al2O3 samples were prepared by incipient wetness impregnation of γ-Al2O3 with different concentration solution of COCl2 and dried at 40 ℃. We measured the positron lifetime spectra of the samples of different Co2＋ mass fractions （0%-8.24%） heated at different temperatures （100 -500 ℃）. All lifetime spectra were resolved into four components, in which the third and the fourth components were related to the surface state of the micropores and the secondary pores of the γ-Al2O3. The experimental results showed that the Co^2＋ was mainly located in the micropores and the secondary pores near to the exterior of the support. For low Co^2＋ mass fraction samples, when the heating temperature was above 400℃, dispersal was almost finished. When the Co^2＋ mass fraction was above 5.59%, Co^2＋ and Cl were dispersed into the secondary pores in the form of multiple layers.

关键词： dispersion COCl2 γ-Al2O3 positron annihilation spectroscopy

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Runoff and Infiltration responses of revegetated slopes to clipping management on the northern Loess Plateau

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International Soil and Water Conservation Research 2024年第1期12卷 171-183页

作者： qilin He Binbin Li Fengbao zhang Nan Shen Mingyi Yang The Research Center of Soil and Water Conservation and Ecological Environment Chinese Academy of Sciences and Ministry of EducationYanglingShaanxi712100China Institute of Soil and Water Conservation Chinese Academy of Sciences and Ministry of Water ResourcesYanglingShaanxi712100China Institute of Soil and Water Conservation Northwest A&F UniversityYanglingShaanxi712100China Water and Soil Conservation Monitoring Center of Ministry of Water Resources Beijing100053China University of Chinese Academy of Sciences Beijing100049China

Large-scale vegetation restoration can reduce local watershed water yield,limit vegetation establishment and subsequent growth,and influence regional ecosystem *** management by reducing aboveground parts of grassland was gradually recommended and adopted in Grain-for-Green project management to offset these additional ***,scientific evaluation of the effectiveness of clipping management on infiltration and runoff processes is necessary for maintaining the stability of the surface water system and the sustainability of vegetation restoration in semi-arid regions.A field simulated rainfall experiment was conducted with four managed clipping grasslands(mainly bunge needlegrass and Stipa grandis),including no clipping,light clipping,heavy clipping,and complete clipping under three slope gradients(10,20,and 30°)and three rainfall intensities(60,90,and 120 mm/h)to explore the mechanism of runoff and infiltration responses to clipping using structural equation modeling and variation partitioning based on an SCS-CN *** results showed the runoff coefficient of the light clipping,heavy clipping,and complete clipping plots were 1.33,2.22,and 4.22 times that of the no clipping *** light clipping,heavy clipping,and complete clipping plots decreased the infiltration coefficients by 0%,5%,and 26%relative to the no clipping *** intensity dominated runoff and infiltration amounts,and clipping intensity's total effect was stronger than slope *** intensity and slope gradient were more influential on runoff with increasing rainfall *** mutual inhibition effect was between clipping intensity and slope gradient on *** order to maintain the sustainability of restoration,a 25-50%vegetation coverage after clipping maximizes the benefits of increasing runoff and maintaining enough soil water supply that prevents possible soil *** propose that future vegetation restoration policies should evaluate the appropriat

关键词： Runoff Infiltration Grassland clipping management SCS-CN model Structural equation model Variation partitioning

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我国妇幼保健卫生资源配置均衡性分析

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山东第一医科大学（山东省医学科学院）学报 2024年第3期45卷 164-169页

作者：张其林胡九英刘学芳甘晓敏吴娟安徽医科大学卫生管理学院安徽合肥230032 安徽医科大学人文医学学院安徽合肥230032

目的分析2017-2021年我国妇幼保健卫生资源配置的基本情况及均衡性,为合理配置卫生资源提供依据。方法以2017-2021年我国妇幼保健机构数、床位数和卫生专业技术人员数为衡量指标,采用基尼系数与泰尔指数测算和分析卫生资源配置的均衡性... 详细信息

目的分析2017-2021年我国妇幼保健卫生资源配置的基本情况及均衡性,为合理配置卫生资源提供依据。方法以2017-2021年我国妇幼保健机构数、床位数和卫生专业技术人员数为衡量指标,采用基尼系数与泰尔指数测算和分析卫生资源配置的均衡性。结果2017-2021年我国每万人口妇幼保健机构数、床位数、卫生专业技术人员数的年均增长率分别为-0.59%、3.91%、6.26%;观察期内我国各类妇幼保健卫生资源的基尼系数为0.1676~0.2426,泰尔指数为0.0607~0.1225,其均衡性由高到低依次为:卫生专业技术人员数、床位数、机构数;观察期内各类卫生资源区域内差异贡献率均高于区域间差异贡献率;观察期内各地区妇幼保健卫生机构数的平均泰尔指数最大的是西部,床位数和卫生专业技术人员数的平均泰尔指数最大的均是东北部。结论我国妇幼保健卫生资源配置均衡性总体较好,区域内应重点关注;妇幼保健机构数呈减少趋势,区域间差异贡献率最大,床位数和卫生专业技术人员数的区域间差异贡献率逐年递增。

关键词：妇幼保健卫生资源配置均衡性基尼系数泰尔指数

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A reverse particle grading strategy for design and fabrication of porous SiC ceramic supports with improved strength

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Journal of Advanced Ceramics 2024年第7期13卷 1011-1022页

作者： Zheng Liang Han zhang Yichuan Li Wenkang zhang Jian Zhou qilin Gu Zhaoxiang Zhong Weihong Xing State Key Laboratory of Materials-Oriented Chemical Engineering National Engineering Research Center for Special Separation MembraneNanjing Tech UniversityNanjing 211816China Nanjing Membrane Application Institute Co. Ltd.Nanjing 210009China

Porous ceramics usually require high mechanical strength and maximized porosity simultaneously,while for conventional particle grading strategies,it is highly challenging to meet both *** this end,a reverse particle grading strategy was developed based on the linear packing model by unusually introducing coarse particles(d_(50)=16μm)into a fine particle(d50=5μm)*** the extrusion and sintering process,tubular porous SiC ceramic supports with improved mechanical strength were successfully *** effects of coarse particles on the rheological properties of the ceramic paste and the macroscopic properties and microstructure of the SiC supports were systematically *** an increase in the content of coarse SiC particles to 30 wt%,the pressure generated during extrusion decreased from 5.5±0.2 to 1.3±0.1 ***,the bending strength of the tubular supports increased from 36.6±5.6 to 49.1±4.5 MPa when 20 wt%coarse powder was *** notably improved mechanical strength was attributed to the distribution of coarse particles that prolonged the route of crack ***,the optimized tubular supports had an average pore size of 1.2±0.1μm,an open porosity of 45.1%±1.6%,and a water permeability of 7163±150 L/(m^(2)·h·bar)as well as good alkali and acid corrosion ***,the strategy was proven to be feasible for the scale-up fabrication of 19-channel SiC tubular porous ceramic supports.

关键词： porous SiC ceramic tubular ceramic support reverse particle grading reaction bonding chemical stability

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EBV-associated lymphoproliferative disease post-CAR-T cell therapy

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Frontiers of Medicine 2024年第2期18卷 394-398页

作者： Shiyuan zhang Xiaoxi Zhou Shangkun zhang Na Wang Tongcun zhang Donghua zhang qilin Ao Yang Cao Liang Huang Department of Hematology Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan430030China Immunotherapy Research Center for Hematologic Diseases of Hubei Province Wuhan430030China Institute of Biology and Medicine College of Life and Health SciencesWuhan University of Science and TechnologyWuhan430081China Department of Pathology Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan430030China State Key Laboratory of Experimental Hematology National Clinical Research Center for Blood DiseasesHaihe Laboratory of Cell EcosystemInstitute of Hematology&Blood Diseases HospitalChinese Academy of Medical Sciences&Peking Union Medical CollegeTianjin300020China Tianjin Institutes of Health Science Tianjin301600China

Epstein–Barr virus(EBV)-associated lymphoproliferative diseases(EBV-LPDs)are common complications that occur after solid organ transplantation or allogeneic hematopoietic stem-cell transplantation(HSCT).However,their occurrence and treatment post-chimeric antigen receptor-modified T(CAR-T)cell therapy has not been *** patients had been diagnosed with EBV-positive aggressive B-cell lymphoma and experienced relapses after multiple lines of *** receiving CAR-T cell therapy in tandem with autologous HSCT,the patients achieved complete ***,with a median time of 38.5 months after CAR-T cell therapy,B-cell-derived EBV-LPDs were diagnosed,and they were relieved through the administration of immune checkpoint inhibitor or B-cell-depleting ***,our report suggests that EBV-LPDs may represent a long-term adverse event after CAR-T cell therapy,especially in patients who previously had EBV-positive disorders,and they can be resolved by immune normalization strategy or B-cell depleting therapy.

关键词： EBV-associated lymphoproliferative disease chimeric antigen receptor T-cell autologous stem cell transplantation immune checkpoint inhibitor

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