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Research on novel multi-layer and multi-polarized slot-coupling planar antenna array

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Journal of Systems Engineering and Electronics 2009年第2期20卷 297-303页

作者： ZhangHou Wu wenzhou wang Jian Missile Inst. of Air Force Engineering Univ. Sanyuan 713800 P. R. China

A novel multi-layer planar antenna array to achieve multi-polarized radiation is developed. U-shaped coupling slots are embedded in the ground plane to extend the bandwidth. The phase relation between adjacent elements in the radiation field is analyzed when adjacent elements are fed in opposite phase. Return loss and radiation pattern are measured for a 16-element antenna array at 12.5 GHz. The radiation pattern shows a good agreement with the calculated one in the shape of the main beam. The return-loss of the proposed antenna array is less than -20 dB in the 12.5 GHz frequency band （12.25-12.75 GHz）. Because of two feed ports the antenna can transmit arbitrary elliptic polarized waves if the two feed ports have different amplitude and phase. The main factors such as element spacing, substrate medium and manufacturing imperfection are analyzed and the corresponding conclusions are presented.

关键词： planar antenna multi-polarized slot-coupling cross polarization

脾脏pDCs活化对小鼠心肌缺血再灌注损伤的影响

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中华麻醉学杂志 2024年第4期44卷 482-487页

作者：田小霞来丽娜刘款储佳钊温夏张艳王文宙长治医学院病理生理学教研室长治046000 长治医学院药理学教研室长治046000 长治医学院第一临床学院长治046000 长治医学院基础医学部长治046000

目的评价脾脏浆细胞样树突状细胞(pDCs)活化对小鼠心肌缺血再灌注损伤的影响。方法动物实验:SPF级健康雄性C57BL/6J小鼠36只,10周龄,体质量22~27 g,按照随机数字表法分为3组(n=12):假手术组(Sham组)、心肌缺血组(MI组)和心肌缺血再灌注... 详细信息

目的评价脾脏浆细胞样树突状细胞(pDCs)活化对小鼠心肌缺血再灌注损伤的影响。方法动物实验:SPF级健康雄性C57BL/6J小鼠36只,10周龄,体质量22~27 g,按照随机数字表法分为3组(n=12):假手术组(Sham组)、心肌缺血组(MI组)和心肌缺血再灌注组(MI/R组)。MI组阻断小鼠左冠状动脉前降支(LAD)40 min,MI/R组阻断LAD 40 min再灌注1 h,Sham组仅穿线不结扎。造模成功后,随机选取各组3只摘取心脏采用TTC-亚甲蓝双染色法测定心肌梗死面积,随机选取各组3只摘取心脏采用HE染色法观察心肌组织病理学结果,其余各组6只先采集腹主动脉血样,采用ELISA法检测血浆干扰素α(IFN-α)浓度,再摘取心脏后收集小鼠心脏灌洗液(CP)。细胞实验:SPF级健康雄性C57BL/6J小鼠12只,10周龄,体质量22~27 g,采用免疫磁珠法分离脾脏pDCs(阳性细胞比例>85%),采用随机数字表法分为Sham组CP刺激pDCs组(pDCs+CP-Sham组)、MI组CP刺激pDCs组(pDCs+CP-MI组)、MI/R组CP刺激pDCs组(pDCs+CP-MI/R组)和PBS刺激pDCs组(pDCs+PBS组),分别采用Sham组、MI组、MI/R组小鼠CP和PBS刺激8 h。采用流式细胞术检测各组pDCs表面CD45、共刺激分子CD80、CD86和主要组织相容性复合物Ⅱ(MHCⅡ)分子的表达,采用ELISA法检测各组细胞培养上清液IFN-α的浓度。结果动物实验:与Sham组和MI组比较,MI/R组小鼠心肌梗死体积百分比升高,血浆IFN-α浓度增加(P0.05)。细胞实验:与pDCs+CP-Sham组比较,pDCs+CP-MI组CD80、CD86和MHCⅡ分子表达上调(P0.05);与pDCs+CP-MI/R组比较,pDCs+CP-MI组上述指标表达上调(P0.05)。结论小鼠心肌缺血再灌注损伤的机制可能与心肌缺血后脾脏pDCs受刺激活化产生IFN-α有关。

关键词：树突状细胞心肌再灌注损伤炎症干扰素α

Physical and Electrochemical Properties of Doped LiFePO4 as Cathode Material for Lithium-Ion Batteries

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Journal of Rare Earths 2004年第Z2期22卷 123-125页

作者： Yao Yongxun Duan Zhenzhong Li Yuenan Gu Hongwei Hua Zhiqiang Luan wenzhou wang Yuan Research Center of Superconducting Materials General Research Institute for Non-Ferrous MetalsBeijing 100088China Research Center of Superconducting MaterialsGeneral Research Institute for Non-Ferrous MetalsBeijing 100088China Research Center of Superconducting MaterialsGeneral Research Institute for Non-Ferrous MetalsBeijing 100088China Research Center of Superconducting MaterialsGeneral Research Institute for Non-Ferrous MetalsBeijing 100088China Research Center of Superconducting MaterialsGeneral Research Institute for Non-Ferrous MetalsBeijing 100088China Research Center of Superconducting MaterialsGeneral Research Institute for Non-Ferrous MetalsBeijing 100088China Research Center of Superconducting MaterialsGeneral Research Institute for Non-Ferrous MetalsBeijing 100088China

LiFePO4 cathode material was synthesized by a solid-state reaction using doping several elements (Nb5 + ,Zr4 + ). The starting materials were mixed with a high-efficient sander and treated thermally under flowing N2. The samples were characterized by X-ray diffraction (XRD), field-emission gun electron microscopy (FEG), and their electrochemical performance was investigated in the term of cycling behavior. Room temperature discharge capacity about 140.6 mA·h·g-1 was obtained at C/5 rate.

关键词： Lithium-ion batteries LiFePO4 cathode material discharge capacity

Achieving high strength and ductility in Fe_(50)Mn_(25)Ni_(10)Cr_(15) medium entropy alloy via Al alloying

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Journal of Materials Science & Technology 2022年第5期100卷 20-26页

作者： Zhen Jiang Ran Wei wenzhou wang Mengjia Li Zhenhua Han Shuhan Yuan Kaisheng Zhang ChenChen Tan wang Fushan Li School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001China Henan Shenhuo Coal&Power Co.Ltd Yongcheng 476600China School of Materials Science and Engineering Xi’an University of TechnologyXi’an 710048China

The microstructure and tensile properties of(Fe_(50)Mn_(25)Ni_(10)Cr_(15))_(100-x)Al_(x)(x=0-8 at.%)medium-entropy alloys(MEAs)were *** was found that the crystalline structure changes from face-centered cubic(FCC)single phase to FCC+body-centered cubic(BCC)dual-phase with the increase of Al ***,the addition of Al elements with large atomic size could induce solid solution strengthening and dual-phase heterogeneous structure ***,the present MEAs exhibit excellent combinations of yield strength,ultimate tensile strength(UTS)and ductility both at 298 and 77 *** the MEAs,the(Fe_(50)Mn_(25)Ni_(10)Cr_(15))_(95)Al_(5) alloy has a remarkable combination of cryogenic UTS(1077 MPa)and ductility(~85%),and has lower raw material costs than the reported high-entropy alloys(HEAs)and *** correlation among microstructure and mechanical properties and the corresponding strengthening mechanism were clarified.

关键词： Medium entropy alloys Microstructure Mechanical properties Cryogenic temperature

Impact of National Immunization Strategies on Vaccine- Preventable Diseases — China, 1950–2021

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China CDC weekly 2024年第16期6卷 339-343页

作者： Quanwei Song Yixing Li Lei Cao Lixin Hao Ning Wen Fuzhen wang Chao Ma Guomin Zhang Hui Zheng wenzhou Yu Zhijie An Zundong Yin Huaqing wang National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases(NITFID) BeijingChina National Immunization Program Chinese Center for Disease Control and PreventionBeijingChina

What is already known about this topic?The incidences of vaccine-preventable diseases(VPDs)included in the Expanded Program on Immunization in China have decreased significantly in recent *** is added by this report?This study summarizes the national incidences of nine VPDs and the seroprevalence of hepatitis B surface antigen(HBsAg)under different immunization strategies from 1950 through 2021 in *** sharpest decreases in VPD incidence and under-5-year HBsAg seroprevalence occurred during the latest stage of the National Immunization *** decreases in VPD incidence were most prominent among children under five years of *** are the implications for public health practice?These findings provide valuable insights for vaccine value assessment and emphasize the importance of implementing immunization strategies in targeted populations.

关键词： vaccine diseases Impact

Theory,technology and application of grouted bolting in soft rock roadways of deep coal mines

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International Journal of Minerals,Metallurgy and Materials 2024年第7期31卷 1463-1479页

作者： Hongpu Kang Jianwei Yang Pengfei Jiang Fuqiang Gao wenzhou Li Jiafeng Li Huiyuan Chen Coal Mining Research Institute China Coal Technology and Engineering Group Co.Ltd.Beijing 100013China Coal Mining Branch China Coal Research InstituteBeijing 100013China State Key Laboratory of Intelligent Mining and Strata Control Beijing 100013China

The grouted bolt,combining rock bolting with grouting techniques,provides an effective solution for controlling the surrounding rock in deep soft rock and fractured *** has been extensively applied in numerous deep mining areas characterized by soft rock roadways,where it has demonstrated remarkable control *** article systematically explores the evolution of grouted bolting,covering its theoretical foundations,design methods,materials,construction processes,monitoring measures,and methods for assessing its *** overview encompassed several key elements,delving into anchoring theory and grouting reinforcement *** new principle of high pretensioned high-pressure splitting grouted bolting collaborative active control is introduced.A fresh method for dynamic information design is also *** discussion touches on both conventional grouting rock bolts and cable bolts,as well as innovative grouted rock bolts and cables characterized by their high pretension,strength,and sealing hole *** examination of the merits and demerits of standard inorganic and organic grouting materials versus the new inorganic–organic composite materials,including their specific application conditions,was ***,the article presents various methods and instruments to assess the support effect of grouting rock bolts,cable bolts,and grouting ***,it provides a foundation for understanding the factors influencing decisions on grouted bolting timing,the sequence of grouting,the pressure applied,the volume of grout used,and the strategic arrangement of grouted rock bolts and cable *** application of the high pretensioned high-pressure splitting grouted bolting collaborative control technology in a typical kilometer-deep soft rock mine in China—the soft coal seam and soft rock roadway in the Kouzidong coal mine,Huainan coal mining area,was ***,the existing problems in grouted bolting control

关键词： deep coal mine soft rock roadway grouted bolting rock bolt and cable grouting material high-pressure splitting grouting collaborative control technology

A Novel Teaching Solution for “Operating Systems”

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A Novel Teaching Solution for “Operating Systems”

清热类中成药治疗新型冠状病毒感染有效性及安全性的网状Meta分析

2012 National Conference on Information Technology and Computer Science

作者： Tunhua Wu School of Information and Engineering wenzhou Medical College wenzhou,China Baogang Bai School of Information and Engineering wenzhou Medical College wenzhou,China Ping wang Department of Environmental Science wenzhou Medical College wenzhou,China

Traditional teaching process of "Operating Systems" course has many defects,such as divorce between theory and practice,outdated experimental platform,which result in low learning interest and effect on the course.A novel teaching solution for "Operating Systems" course was proposed in this *** solution is divided into four ***,construct a novel experimental platform based on Ubuntu Linux and Qt *** can easily design any program with GUI interface under Linux system by applying Qt ***,simulate some critical algorithms in the ***,trace Linux kernel code utilizing Qemu virtual machine and *** doing so,students may insight about the structure of Linux ***,modify part of the kernel code and rebuild the *** with traditional teaching model,this solution not only provide attractive experimental platform,but also give the chance for looking into Linux *** practice show that this solution can dramatically improve students’ learning interest and practical ability.

关键词： Operating System education reform Linux kernel Qt Library

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临床合理用药杂志 2024年第10期17卷 1-8页

作者：杨洋陈竹刘志伟杜丽高倩倩王文洲冷家会舒闯闯袁发旺贵州中医药大学贵阳市550025 贵州中医药大学第二附属医院贵阳市550003

目的基于网状Meta分析方法评价不同中成药治疗新型冠状病毒感染的有效性及安全性,为新型冠状病毒感染的临床用药提供循证依据。方法计算机检索中国知网(CNKI)、万方数据知识服务平台(万方数据)、维普网数据库(VIP)、中国生物医学文献... 详细信息

目的基于网状Meta分析方法评价不同中成药治疗新型冠状病毒感染的有效性及安全性,为新型冠状病毒感染的临床用药提供循证依据。方法计算机检索中国知网(CNKI)、万方数据知识服务平台(万方数据)、维普网数据库(VIP)、中国生物医学文献服务系统(Sinomed)、PubMed、Embase等,检索有关中成药治疗新型冠状病毒感染的临床随机对照试验,检索时间为2019年1月1日—2022年9月1日。采用Cochrane偏倚风险评估工具对纳入的研究进行质量评价。应用RevMan 5.4进行传统Meta分析,Addis进行网状Meta分析,运用Stata 17.0绘制漏斗图及累积排序概率曲线下面积。结果最终纳入文献24篇,涉及4种中成药(连花清瘟制剂、血必净、痰热清制剂、疏风解毒制剂)。网状Meta分析结果表明:在总有效率方面,痰热清制剂+常规西药治疗>疏风解毒制剂+常规西药治疗>连花清瘟制剂+常规西药治疗>血必净+常规西药治疗>常规西药治疗;在CT好转率方面,血必净+常规西药治疗>疏风解毒制剂+常规西药治疗>连花清瘟制剂+常规西药治疗>痰热清制剂+常规西药治疗>常规西药治疗;在退热时间方面,血必净+常规西药治疗>疏风解毒制剂+常规西药治疗>痰热清制剂+常规西药治疗>连花清瘟制剂+常规西药治疗>常规西药治疗;在咳嗽消失时间方面,痰热清制剂+常规西药治疗>连花清瘟制剂+常规西药治疗>疏风解毒制剂+常规西药治疗>常规西药治疗;在乏力消失时间方面,血必净+常规西药治疗>连花清瘟制剂+常规西药治疗>疏风解毒制剂+常规西药治疗>常规西药治疗;在淋巴细胞计数方面,血必净+常规西药治疗>疏风解毒制剂+常规西药治疗>连花清瘟制剂+常规西药治疗>常规西药治疗;在白细胞计数方面,疏风解毒制剂+常规西药治疗>连花清瘟制剂+常规西药治疗>血必净+常规西药治疗>常规西药治疗;在安全性方面,中成药联合常规西药治疗未加重新型冠状病毒感染患者不良反应发生率。结论中成药联合常规西药治疗新型冠状病毒感染的有效性优于单纯常规西药治疗,且安全性高。

关键词：新型冠状病毒感染连花清瘟制剂血必净痰热清制剂疏风解毒制剂网状Meta分析

Yunpi Xiefei Huatan decoction alleviates airway inflammation and mucus hypersecretion in young asthmatic rats via inhibiting PI3K/AKT/NF-κB signaling pathway

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China Medical Abstracts(Internal Medicine) 2023年第4期40卷 199-200页

作者：王文洲 2nd Clin Med Coll Guizhou CM UnivGuiyang 550002

Objective To explore the effect of Yunpi Xiefei Huatan Decoction(YXHD)on airway inflammation and mucus hypersecretion in young asthmatic rats based on the correlation of interleukin(IL)-23/T helper cell(Th17)inflammation axis and phosphatidylinositol 3kinase(PI3K)/protein kinase B(AKT)/nuclear factor kappa-B(NF-κB)signal *** Fifty-six young SD rats were randomly divided into 7 groups:normal group,model group,low-dose group of YXHD(LTCM)。

关键词： PI3K/AKT inflammation airway