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A Long March 2D Launches China's First Carbon Dioxide Monitoring Satellite

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Aerospace China 2016年第4期17卷 60-60页

作者： tang mingjun

China launched its first carbon dioxide monitoring satellite(Tan Sat)along with three micro/nano satellites on a LM-2D launch vehicle from the Jiuquan Satellite Launch Center at 03:22 Beijing time on December *** satellite entered its preset *** satellite monitors and analyzes carbon dioxide emissions regularly in provinces and cities around China

关键词：酒泉卫星发射中心二氧化碳监测中国长征纳米卫星北京时间发射车

China's First X-Ray Astronomical Satellite Launched

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Aerospace China 2017年第2期18卷 52-52页

作者： tang mingjun china space news

A LM-4B launch vehicle lifted off at 11:00 Beijing time on June 15 from the Jiuquan Satellite Launch Center with Huiyan,China’s first X-ray space astronomical *** New Sat-3 small satellite of Uruguay and the first tw... 详细信息

关键词：酒泉卫星发射中心天文卫星 X射线中国北京时间运载火箭卫星星座小卫星

LM-11 Offers First “Special Car” Service to Commercial User

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Aerospace China 2018年第2期19卷 63-63页

作者： tang mingjun China Space News

A LM-11 solid launch vehicle soared into space from the Jiuquan Satellite Launch Center,carrying 5 Zhuhai 1satellites into their preset *** satellites will be operated by the Zhuhai Orbita Aerospace Science and Techno... 详细信息

关键词：运载火箭航天事业中国发展现状

A LM-4B Carrier Rocket Launched the SJ-16-02 Satellite

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Aerospace China 2016年第2期17卷 66-66页

作者： tang mingjun

A LM-4B carrier rocket lifted off from the Jiuquan Satellite Launch Center at11:21 Beijing time on June 29,putting the second SJ-16 satellite into its preset *** SJ-16-02 satellite is mainly used for space environment... 详细信息

关键词：酒泉卫星发射中心运载火箭火箭发射北京时间技术试验环境观测

LM-2C Launched Yaogan 30-05 Group Satellites

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Aerospace China 2019年第3期20卷 54-54页

作者： tang mingjun China Space News

China launched three Yaogan 30-05 group satellites with a LM-2C launch vehicle from the Xichang Satellite Launch Center at I 1:57 Beijing time on July *** 3 satellites entered the preset orbits *** LM-2C launch vehicle which carried out the mission was developed by the China Academy of Launch Vehicle Technology(CALT).It is the first carrier rocket that has performed launch missions from all three inland launch sites in *** flight is the first mission of LM-2C in 2019.

关键词： Launch satellites inland

Yunhai 1-01 Meteorological Satellite Launched Atop LM-2D

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Aerospace China 2016年第4期17卷 60-60页

作者： tang mingjun

A LM-2D carrier rocket lifted off from the Jiuquan Satellite Launch Center at7:14 *** time on November 12,putting the Yunhai1-01 meteorological satellite into its preset *** satellite will be used for atmospheric and ... 详细信息

关键词：酒泉卫星发射中心气象卫星北京时间运载火箭环境元素防灾减灾科学实验环境观

Yaogan 27 Satellite Launched on a LM-4C

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Aerospace China 2015年第3期16卷 53-53页

作者： tang mingjun

At 10:31 Beijing time on August 27,a LM-4C launch vehicle lifted off from the Taiyuan Satellite Launch Center,putting a remote sensing satellite into *** Yaogan 27 satellite,designed for scientific experiments,home land resources survey,crop estimation and disaster prevention and mitigation,entered its preset *** the satellite and the launch ve-

关键词：遥感卫星太原卫星发射中心土地资源调查农作物估产北京时间运载火箭科学实验灾害预防

Characteristic Analysis of Power Oscillations Caused by Disharmony Among Voltage-source-controlled Units in Three-terminal Local Power Grid

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Journal of Modern Power Systems and Clean Energy 2024年第4期12卷 1295-1308页

作者： Qiyi Yu Yi tang School of Electrical Engineering Southeast UniversityNanjing 210018China

Previous studies have demonstrated that disharmo-ny among voltage-source-controlled units(VSCUs)may occur on an alternating current(AC)transmission or distribution line under steady-state operating conditions(SSOCs)or quasi-static operating conditions(QSSOCs).As the studies on frequency dis-harmony have been expanded to multiple disharmonized vS-CUs in the local power grid,its adverse effects on AC lines and equivalent load(EL)at the bus without active voltage control ability(non-active bus)need to be investigated ***-ering the locality of disharmony and common topological con-nections among VSCUs,this paper adopts a Y-type three-termi-nal local power grid(LPG)as the research *** dishar-mony among the three VSCUs is ***,for the load at non-active bus,the formulas for single-phase instantaneous voltage,load current,load power,as well as average power un-der disharmony operating conditions(DOCs)are *** characteristic indicators of the above electrical quantities are defined,which can measure the amplification and reduction de-grees of the above electrical quantities before and after ***,for the line directly connected to VSCUs,the formulas for single-phase instantaneous line current and power and the average power under DOCs are *** character-istic indicators of power flow are defined,which can be used to quantify the peak amplification impact of oscillation before and after ***,the case study on the Y-type three-terminal LPG under the single-disharmony and the multi-dis-harmony switching scenarios indicates that the long-period pow-er oscillation caused by disharmony may occur in the load flow at the non-active bus and the line *** oscillation causes a serious decrease in load capability and a significant amplifica-tion of the peak of line power oscillation.

关键词： New power system power oscillation disharmony voltage-source-controlled unit(VSCU) characteristic analysis

Nuclear charge radius predictions by kernel ridge regression with odd-even effects

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Nuclear Science and Techniques 2024年第2期35卷 94-102页

作者： Lu tang Zhen-Hua Zhang Mathematics and Physics Department North China Electric Power UniversityBeijing 102206China Hebei Key Laboratory of Physics and Energy Technology North China Electric Power UniversityBaoding 071000China

The extended kernel ridge regression(EKRR)method with odd-even effects was adopted to improve the description of the nuclear charge radius using five commonly used nuclear *** are:(i)the isospin-dependent A^(1∕3) formula,(ii)relativistic continuum Hartree-Bogoliubov(RCHB)theory,(iii)Hartree-Fock-Bogoliubov(HFB)model HFB25,(iv)the Weizsacker-Skyrme(WS)model WS*,and(v)HFB25**** the last two models,the charge radii were calculated using a five-parameter formula with the nuclear shell corrections and deformations obtained from the WS and HFB25 models,*** each model,the resultant root-mean-square deviation for the 1014 nuclei with proton number Z≥8 can be significantly reduced to 0.009-0.013 fm after considering the modification with the EKRR *** best among them was the RCHB model,with a root-mean-square deviation of 0.0092 *** extrapolation abilities of the KRR and EKRR methods for the neutron-rich region were examined,and it was found that after considering the odd-even effects,the extrapolation power was improved compared with that of the original KRR *** strong odd-even staggering of nuclear charge radii of Ca and Cu isotopes and the abrupt kinks across the neutron N=126 and 82 shell closures were also calculated and could be reproduced quite well by calculations using the EKRR method.

关键词： Nuclear charge radius Machine learning Kernel ridge regression method