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On the source of the quasi-Carrington Rotation periodic magnetic variations on the Martian surface: InSight observations and modeling

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Earth and Planetary Physics 2022年第3期6卷 275-283页

作者： Hao Luo AiMin Du ShaoHua Zhang YaSong Ge Ying Zhang ShuQuan Sun Lin Zhao Lin tian songyan Li Key Laboratory of Earth and Planetary Physics Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China College of Earth Science University of Chinese Academy of SciencesBeijing 100049China Beijing Institute of Spacecraft Environment Engineering Beijing 100094China

In a recent paper(Luo H et al.,2022),we found that the peak amplitudes of diurnal magnetic variations,measured during martian days(sols)at the InSight landing site,exhibited quasi Carrington-Rotation(qCR)periods at higher eigenmodes of the natural orthogonal components(NOC);these results were based on~664 sols of magnetic field ***,the source of these periodic variations is still *** this paper we introduce the neutral-wind driven ionospheric dynamo current model(e.g.,Lillis et al.,2019)to investigate the *** candidates-the draped IMF,electron density/plasma density,the neutral densities,and the electron temperature in the ionosphere with artificial qCR periodicity,are applied in the modeling to find the main factor likely to be causing the observed surface magnetic field variations that exhibit the same qCR *** show that the electron density/plasma density,which controls the total conductivity in the dynamo region,appears to account for the greatest part of the surface qCR variations;its contribution reaches about 67.6%.The draped IMF,the neutral densities,and the electron temperature account,respectively,for only about 12.9%,10.3%,and 9.2%of the *** study implies that the qCR magnetic variations on the Martian surface are due primarily to variations of the dynamo currents caused by the electron density *** suggest also that the timevarying fields with the qCR period could be used to probe the Martian interior's electrical conductivity structure to a depth of at least 700 km.

关键词： InSight sol magnetic variations Carrington Rotation(CR)periodicity

The TanSat mission： preliminary global observations

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Science Bulletin 2018年第18期63卷 1200-1207页

作者： Yi Liu Jing Wang Lu Yao Xi Chen Zhaonan Cai Dongxu Yang Zengshan Yin songyan Gu Longfei tian Naimeng Lu Daren Lyu Institute of Atmospheric Physics Chinese Academy of SciencesBeijing 100029 China University of Chinese Academy of Sciences Beijing 100049 China Shanghai Engineering Center for Microsatellites Shanghai 201210 China National Satellite Meteorological Center China Meteorological Administration Beijing 100081 China

The Chinese global carbon dioxide monitoring satellite （TanSat） was launched successfully in December 2016 and has completed its on-orbit tests and calibration. TanSat aims to measure the atmospheric column-averaged dry air mole fractions of carbon dioxide （XCO2） with a precision of 4 ppm at the regional scale, and in addition, to derive global and regional CO2 fluxes. Progress towards these objectives is reviewed and the first scientific results from TanSat measurements are presented. TanSat on-orbit tests indicate that the Atmospheric Carbon dioxide GratingSpectrometer is in normal working status and is beginning to produce LIB products. The preliminary TanSat XCO2 products have been retrieved by an algorithm and compared to NASA Orbiting Carbon Observatory-2 （OCO-2） measurements during an over- lapping observation period. Furthermore, the XCO2 retrievals have been validated against eight groundsite measurement datasets from the Total Carbon Column Observing Network, for which the preliminary conclusion is that TanSat has met the precision design requirement, with an average bias of 2.11 ppm. The first scientific observations are presented, namely, the seasonal distributions of XCO2 over land on a global scale.

关键词： TanSat Carbon dioxide Retrieval algorithm Carbon flux inversion

MICROSTRUCTURE AND MECHANICAL PROPERTIES OF PARTICULATE REINFORCED MATRIX COMPOSITE

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Chinese Journal of Aeronautics 1997年第2期10卷 127-130页

作者： Mi Guofa Li Zhou tian Shifan(Institute of Aeronautical Materials, Beijing, 100095, China)Zeng songyan Li Qingchun(Harbin Institute of Technology, Harbin, 150001,China) Institute of Aeronautical Materials Beijing 100095 China Harbin Institute of Technology Harbin 150001 China

TiB2 - particulate- reinforced Ni3 Al composites were prepared by spray a tom-ization co-deposition technique. The reinforcement particulate can be uniformly distributedin matrix alloy, and no interaction would be fou... 详细信息

关键词： particulate reinforced composites microstructure mechanical properties spray atomization co-deposition

TanSat Mission Achievements： from Scientific Driving to Preliminary Observations

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空间科学学报 2018年第5期38卷 627-639页

作者： LIU Yi WANG Jing YAO Lu CHEN Xi CAI Zhaonan YANG Dongxu YIN Zengshan GU songyan tian Longfei LU Naimeng L Daren Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 University of Chinese Academy of Sciences Beijing 100190 Shanghai Engineering Center for Microsatellites Shanghai 201203 National Satellite Meteorological Center

The Chinese global carbon dioxide monitoring satellite(TanSat)was successfully launched in December 2016 and has completed its on-orbit tests and *** aims to measure the atmospheric Carbon Dioxide column-averaged dry air mole fractions(X_(CO_2))with a precision of 4 ppm at the regional scale,and further to derive the CO_2 global and regional *** toward these objectives is reviewed and the first scientific results from TanSat measurements are *** the design phase,Observation System Simulation Experiments(OSSE)on TanSat measurements performed prior to launch measurements using a nadir and a glint alternative mode when considering the balance of stable measurements and reduces the flux uncertainty(64%).The constellation measurements of two satellites indicate an extra 10%improvement in flux inversion if the satellite measurements have no bias and similar *** TanSat on-orbit test indicates that the instrument is stable and beginning to produce X_(CO_2)*** preliminary TanSat measurements have been validated with Total Carbon Column Observing Network(TCCON)measurements and have inter-compared with OCO-2 measurements in an overlap measurement.

关键词：科学开车二氧化碳监视卫星干燥空气设计阶段地区性 ppm

韦伯《新教伦理与资本主义精神》的社会学理解

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中共福建省委党校学报 2002年第4期 79-81页

作者：田嵩燕北京大学历史系

《新教伦理与资本主义精神》是马克斯·韦伯的一部名作,也是一部长久以来人们争论不止的著作。本文试图把这部著作放在韦伯理解社会学的脉络中加以阐述,并对韦伯与马克思在相应点上的殊与同给出一些说明。

关键词：理性资本主义新教伦理工具理性扩张

The potential mechanism and prognosis value of Fructus tribuli treating breast cancer by netw ork-based pharmacological analysis

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解剖学杂志 2021年第S1期44卷 198-199页

作者： Lin Dongjing Li songyan Zhang Jun XuLu Liu Yang Wang Hongjun Liu Zhongping tian Hongyan Xu Ye Key Laboratory of Targeted Tumor Therapy and Translat ional Medicine Department of Histology and EmbryologyDepartment of Cell BiologyDepartment of Medical GeneticsJilin University of MedicineJilin 132013

To screen effective active com pounds and targets of Fructus Tribuli(FT)for breast cancer,to further explore its molecular mechanism and compare the prognostic reliability of breast cancer *** potential active components of FT was screened using the TCMSP *** targets of breast cancer were collected on the GeneCards and OMIM *** biological processes,and pathways of FT anti-breast cancer were predicted by constructing the relationship network of herb-component-target using GO,KEGG,*** of these the most significant differentially expressed genes were evaluated using KM database.7 main active components and 13 main targets for the treatment of breast cancer were identified.

关键词： breast cancer Survival

维普期刊数据库评论

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维普期刊数据库

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烟台东山宾馆屋面钢结构的设计、加工与施工

工业建筑 2005年第Z1期35卷 304-305,284页

作者：田文宝焦红王松岩山东大学济南250100 山东建筑工程学院土木学院济南250014

简要介绍了烟台东山宾馆贵宾楼屋盖钢结构的设计、加工和安装,对复杂的改造扩建工程的特殊性进行了总结,特别对方钢管桁架的设计与应用进行了探讨。

关键词：方钢管荷载节点中空玻璃碳纤维

The potential mechanism and prognosis value of Fructus tribuli treating breast cancer by network-based pharmacological analysis

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The potential mechanism and prognosis value of Fructus tribu...

中国解剖学会2021年年会

作者： Lin Dongjing Li songyan Zhang Jun Xu Lu Liu Yang Wang Hongjun Liu Zhongping tian Hongyan Xu Ye Key Laboratory of Targeted Tumor Therapy and Translational Medicine Department of Histology and EmbryologyDepartment of Cell BiologyDepartment of Medical GeneticsJilin University of Medicine

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cnki会议

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老年用户使用在线社交网络的行为类型研究

情报杂志 2016年第7期35卷 167-172页

作者：柴雯左美云田雪松常松岩中国人民大学商学院北京100872 工业和信息化部电子科学技术情报研究所北京100040 中国人民大学信息学院北京100872 中国人民大学智慧养老研究所北京100872

[目的/意义]在智慧养老背景下,如何通过信息和互联网技术帮助老年人参与社会互动具有十分重要的意义。[方法/过程]以微博为例,根据用户参与模式、关系链特征和持续使用情况对老年用户进行聚类分析,并进一步通过回归分析发掘以上三者之... 详细信息

[目的/意义]在智慧养老背景下,如何通过信息和互联网技术帮助老年人参与社会互动具有十分重要的意义。[方法/过程]以微博为例,根据用户参与模式、关系链特征和持续使用情况对老年用户进行聚类分析,并进一步通过回归分析发掘以上三者之间的关联。[结果/结论]结果表明,参与模式属于信息传播型,关系链特征属于海量关注型的老年用户最为活跃。而参与模式属于适量互动型,关系链特征属于积极关注型的老年用户,持续参与程度最高。老年用户的粉丝数越多,持续参与时间越长。关注数与老年人的活跃程度呈现正相关。最后,针对如何促进老年人持续并活跃地使用在线社交网络提出建议。

关键词：老年人在线社交网络聚类分析持续使用参与模式关系链