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大功率超宽带高平坦度定向耦合器设计

舰船电子对抗 2024年第3期47卷 103-108页

作者：张大伟昌建军王慧丽张峰平中国电子科技集团公司第九研究所四川绵阳621000 南京电子技术研究所江苏南京210039

宽带大功率射频发射系统中的保护电路需要实时采集准确的射频信号。宽带大功率耦合器作为保护电路的关键器件,其耦合度的平坦度、方向度指标对保护电路采集射频信号的准确性起到关键影响。采用同轴结构的定向耦合器具备极小的插入损耗,... 详细信息

宽带大功率射频发射系统中的保护电路需要实时采集准确的射频信号。宽带大功率耦合器作为保护电路的关键器件,其耦合度的平坦度、方向度指标对保护电路采集射频信号的准确性起到关键影响。采用同轴结构的定向耦合器具备极小的插入损耗,在接入射频通路后对通过功率影响极小。通过在拟合网络中采用传输线变压器谐振回路实现宽带高平坦度定向耦合。实测结果表明在80 MHz~1000 MHz频段的5000 W以上量级的大功率定向耦合器中,其耦合度为50 dB时,平坦度≤±0.3 dB,方向度>20 dB,耦合端口电压驻波比(VSWR)≤1.25,主通路插入损耗≤0.1 dB,主通路VSWR≤1.10。

关键词：定向耦合器耦合度平坦度保护电路方向度传输线变压器

Fibrinolytic niche is required for alveolar type 2 cell-mediated alveologenesis via a uPA-A6-CD44^(+)-ENaC signal cascade

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Signal Transduction and Targeted Therapy 2021年第3期6卷 618-620页

作者： Gibran Ali Mo Zhang Runzhen Zhao Krishan GJain jianjun chang Satoshi Komatsu Beiyun Zhou Jiurong Liang Michael AMatthay Hong-Long Ji Department of Cellular and Molecular Biology University of Texas Health Science Center at TylerTylerTXUSA Institute of Lung and Molecular Therapy Xinxiang Medical UniversityXinxiangHenanChina Institute of Health Sciences China Medical UniversityShenyangLiaoningChina Division of Pulmonary Critical Care and Sleep MedicineUniversity of Southern CaliforniaLos AngelesCAUSA Hastings Center for Pulmonary Research University of Southern CaliforniaLos AngelesCAUSA Norris Comprehensive Cancer Center University of Southern CaliforniaLos AngelesCAUSA Department of Medicine Keck School of MedicineUniversity of Southern CaliforniaLos AngelesCAUSA Department of Medicine Cedars-Sinai Medical CenterLos AngelesCAUSA Department of Medicine and Anesthesia University of California San FranciscoSan FranciscoCAUSA Cardiovascular Research Institute University of California San FranciscoSan FranciscoCAUSA Texas Lung Injury Institute University of Texas Health Science Center at TylerTylerTXUSA

Dear Editor,COVID-19,SARS,and MERS are featured by suppressed *** primary objective of this study was to decipherthe role of the fibrinolytic niche in the progenitor alveolar type 2(AT2)cell-mediated *** expression of Piau inAT2 cells has been confirmed at the mRNA,protein,and functionallevel across *** employed influenza-infected&Plau^(-/-)mice,3D organoids,and polarized monolayers to track AT2 *** found a marked reduction in total AT2 cells and CD44^(+)subpopulation when the fibrinolytic niche was disrupted.

关键词： alveolar CD44 lung

Comprehensive evaluation of an ionic liquid based deep purification process for NH_(3)-containing industrial gas

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Journal of Environmental Sciences 2024年第2期136卷 698-708页

作者： Guoxiong Zhan Fei Cao jianjun Chen Zhen Chen Yuanmeng Duan Fei chang Shaojuan Zeng Yinge Bai Zengxi Li Xiangping Zhang Junhua Li State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China Sino-Danish College University of Chinese Academy of SciencesBeijing 100049China Institute of Process Engineering Chinese Academy of SciencesBeijing 100190China College of Chemical and Engineering University of Chinese Academy of SciencesBeijing 100049China

Ammonia(NH_(3))emission has caused serious environment issues and aroused worldwide *** emerging ionic liquid(IL)provides a greener way to efficiently capture NH_(3).This paper provides rigorous process simulation,optimization and assessment for a novel NH_(3)deep purification process using *** process was designed and investigated by simulation and optimization using ionic liquid[C_(4)im][NTF_(2)]as *** objective functions,total purification cost(TPC),total process CO_(2)emission(TPCOE)and thermal efficiency(ηeff)were employed to optimize the absorption *** simulation and optimization results indicate that at same purification standard and recovery rate,the novel process can achieve lower cost and CO_(2)emission compared to benchmark *** process optimization,the optimal functions can achieve 0.02726$/Nm~3(TPC),311.27 kg CO_(2)/hr(TP-COE),and 52.21%(ηeff)for enhanced ***,compared with conventional process,novel process could decrease over$3 million of purification cost and 10000 tons of CO_(2)emission during the life *** results provide a novel strategy and guidance for deep purification of NH_(3)capture.

关键词： NH_(3) Capture Process Ionic Liquid Process Simulation Process Optimization Deep purification

New Control System for Beamline of 320 kV Platform

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IMP & HIRFL Annual Report 2017年第1期 298-299页

作者： chang jianjun Zhang Wei An Shi Liu Xiaojun Wang Pengpeng Liu Junke 不详

In the year of 2017,we have upgraded the control system of beamline in 320 kV experimental *** new control system is based on Experimental Physics and Industrial Control System(EPICS)[1].This new control system is 3-layer *** powerful industry computers from Advantech running CentOS are used as EPICS Input and Output Controller(IOC)with control software running in *** IOC running windows operating system is used as Operator Interface(OPI).Advanced PLC is used to control the electromagnetic *** setup is shown in Fig.1.

关键词： structure. CentOS computer

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西宁市售大米汞、砷污染状况及健康风险评价

江苏农业科学 2010年第3期38卷 390-391页

作者：常建军青海大学农牧学院动物医学系青海西宁810003

测定西宁市售大米中重金属元素汞、砷的含量,评估其污染状况,并进行健康风险评价,为保障人们饮食安全提供科学依据。采用氢化物发生原子荧光法,共检测了37份样品,其中汞检出率为48.6%,超标率为2.7%;砷检出率为100%,超标率为0。健康风险... 详细信息

测定西宁市售大米中重金属元素汞、砷的含量,评估其污染状况,并进行健康风险评价,为保障人们饮食安全提供科学依据。采用氢化物发生原子荧光法,共检测了37份样品,其中汞检出率为48.6%,超标率为2.7%;砷检出率为100%,超标率为0。健康风险评价结果表明,西宁市售大米中的砷含量对人体健康风险影响较小,汞含量对人体健康存在一定的危害。

关键词：大米汞砷风险评价

6-40 Technological Remolding of HIRFL-CSRm Power Supply Monitoring System

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IMP & HIRFL Annual Report 2016年第1期 295-296页

作者： Ge Liang An Shi Zhang Wei chang jianjun Liu Xiaojun Wang Pengpeng Zhou Yunbin 不详

It is significant to collect output information of power supply for beam *** technological remolding of power supply monitoring system is a necessary part in the process of EPICS remolding of *** the basis of original monitoring system,a new processing flow is ***,the proposed method is not necessary for hardware *** new software system has been operating steadily in the past five months at HIRFL-CSRm site and satisfies the design requirement.

关键词：

Microbeam Power Supplies Control System Upgrade

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IMP & HIRFL Annual Report 2017年第1期 303-304页

作者： Liu Xiaojun Zhang Wei An Shi Wang Pengpeng chang jianjun Wu Junqi Liu Junke Chen Yun 不详

A new power supplies control system was developed at the high energy heavy ion microbeam facility in the Institute of Modern Physics(IMP),*** system comprises AO modules from ICP DAS and AI modules from Advantech for different types of power supply *** paper introduces the hardware configuration,software design and running status of the power supplies system.

关键词： system plies beam

Modi cation of SSC Power Supply Controlling Based on EPICS

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IMP & HIRFL Annual Report 2017年第1期 305-306页

作者： Wang Pengpeng An Shi Zhou Yunbin Liu Junke Liu Xiaojun Chen Yun Wu Junqi chang jianjun 不详

The output stability of power supply for HIRFL(Heavy Ion Research Facility of Lanzhou)SSC is *** supply(hereinafter referred to as ps)provides currents to magnets which produce the magnetic field to constraint *** the output stability of ps has a great significance to the quality of *** original controller MSC1210[1]for SSC ps controlling is not reliable and needs too much energy to make it running stably,it also increases the burdens of the commissioning *** we use XT1541 and XT1241 modules from Acromag which is an American company as the new controller for SSC ps controlling。

关键词： MSC1210 Power SSC

ChatGPT时代下基于深度自编码网络的企业内部审计智能预警——以往来款项审计为例

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系统工程理论与实践 2024年第1期44卷 316-337页

作者：程平喻畅王健俊重庆理工大学云会计大数据智能研究所重庆400054 浙江吉利汽车有限公司财务中心余姚315400 余姚领克汽车部件有限公司财务部管理会计科余姚315400

以ChatGPT为代表的生成式人工智能技术被誉为第二次信息革命,其强大的数据深入分析能力为企业智能化内部审计提供了新思路.针对现有审计风险预警中传统机器学习泛化能力提升有限以及特征分析维度不足等问题,提出一种基于ChatGPT技术内... 详细信息

以ChatGPT为代表的生成式人工智能技术被誉为第二次信息革命,其强大的数据深入分析能力为企业智能化内部审计提供了新思路.针对现有审计风险预警中传统机器学习泛化能力提升有限以及特征分析维度不足等问题,提出一种基于ChatGPT技术内核的深度自编码网络方法,来对往来款项这一重要会计活动中的风险做出事前判别.首先,根据影响因素从业务匹配、期限结构、减值损失、关联交易、单体统计和文本信息多个角度筛选提取审计特征;随后,考虑到风险样本的不平衡性以及业财指标在经营周期下的前后时变特性,基于无监督和深度学习思想,构建了以添加注意力机制双向长短期记忆(Bi-LSTM)作为神经网络的深度自编码器(DAE)预训练模型,并借鉴多任务学习思想,利用融合模型迁移的集成框架量化审计风险概率以保证预警的稳定性;最后,通过大数据技术采集企业往来业务和财务的真实数据对上述方法进行了多方面对比验证.试验结果表明,该方法有助于不同预警时间窗口下审计特征的高效精准挖掘,相较常用的监督学习和迭代聚类法能显著提升审计风险预警的精度和鲁棒性,同时能识别出导致风险产生的关键因素以快速定位审计疑点,为企业改善内部审计的质量和效率提供智能化决策支持.

关键词：深度自编码器内部审计风险预警应收及应付账款智能审计