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Research in Astronomy and Astrophysics 2024年第6期24卷 1-6页

作者： Wei-Nan Wang jin-song ping Ming-Yuan Wang Wen-Zhao Zhang Han-Lin Ye Xing-Wei Han song-Feng Kou Changchun Observatory National Astronomical ObservatoriesChinese Academy of SciencesChangchun 130117China National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 101408China Astronomy Department Beijing Normal UniversityBeijing 100875China International Center for Climate and Environment Sciences Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China Nanjing Institute of Astronomical Optics and Technology Chinese Academy of SciencesNanjing 210042China

Lunar optical polarization is a fascinating phenomenon that occurs when sunlight reflects off the surface of the Moon and becomes *** study employs a novel split-focus plane polarimetric camera to conduct the initial white light polarimetric observations on the near side of the *** obtained the linear degree of polarization(DOP)parameters of white light by observation from the eastern and western hemispheres of the *** findings indicate that the white light polarization is lower in the lunar highland than in the lunar maria *** the analysis of lunar soil samples,we noticed and determined that the DOP parameters of white light demonstrate high consistency with iron oxide on the *** study may serve as a new diagnostic tool for the Moon.

关键词： techniques:photometric polarization methods:observational Moon

青藏高原地区绿色全要素生产率时空分异与驱动机理

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长江流域资源与环境 2024年第6期33卷 1182-1196页

作者：刘庆芳谢佳亮张先甜吴卫宋金平杨显明北京师范大学地理科学学部北京100875 华南理工大学旅游管理系广东广州510006 湖南师范大学旅游学院湖南长沙410081 湖南财政经济学院湖南省经济地理研究所湖南长沙410205 青海师范大学地理科学学院青海西宁810016

提高绿色全要素生产率是促进青藏高原地区经济社会高质量发展的重要举措。基于2000~2019年青藏高原地市州面板数据,综合运用全域Malmquist-Luenberger指数、非参数Kernel核密度估计、空间马尔科夫链和面板分位数回归等方法,分析青藏高... 详细信息

提高绿色全要素生产率是促进青藏高原地区经济社会高质量发展的重要举措。基于2000~2019年青藏高原地市州面板数据,综合运用全域Malmquist-Luenberger指数、非参数Kernel核密度估计、空间马尔科夫链和面板分位数回归等方法,分析青藏高原地区绿色全要素生产率的时空演化特征及其驱动机理。结果表明:(1)研究期内,青藏高原地区绿色全要素生产率的演化趋势相对稳定,在省区和地市州层面上均波动起伏,上下徘徊,呈现“多峰”波浪型集聚形态;(2)青藏高原地区地市州绿色全要素生产率空间分异的连续性和稳定性良好,在空间上存在跨越式转移的可能,并在连续转移过程中存在“马太效应”;(3)经济发展水平、产业结构和人口规模均能在不同水平上促进青藏高原地区绿色全要素生产率的提升,而城镇化进程的加速不利于绿色全要素生产率的增长。

关键词：高质量发展绿色全要素生产率全域Malmquist-Luenberger指数空间马尔科夫链青藏高原地区

麻杏石甘汤联合阿奇霉素治疗小儿支气管肺炎的疗效及对其炎症因子的影响

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世界中西医结合杂志 2024年第5期19卷 1031-1035页

作者：钱晨佳杨莹莹宋锦萍江阴市中医院儿科江苏江阴214400

目的观察麻杏石甘汤联合阿奇霉素治疗小儿支气管肺炎的疗效及对其炎症因子的影响。方法选取2019年8月—2022年12月期间江阴市中医院收治的支气管肺炎患儿89例,按照随机数字表法将其分为对照组44例和观察组45例。对照组予阿奇霉素治疗... 详细信息

目的观察麻杏石甘汤联合阿奇霉素治疗小儿支气管肺炎的疗效及对其炎症因子的影响。方法选取2019年8月—2022年12月期间江阴市中医院收治的支气管肺炎患儿89例,按照随机数字表法将其分为对照组44例和观察组45例。对照组予阿奇霉素治疗,观察组在对照组基础上联合麻杏石甘汤治疗,连续5 d为1个疗程。观察比较两组患儿临床疗效,治疗前后肺功能(FEV1、PEF25、FVC)、血气(PaO_(2)、PaCO_(2))、炎症因子[肿瘤坏死因子(Tumor necrosis factor,TNF-α)、血清白介素6(Interleukin 6,IL-6)、超敏C-反应蛋白(hypersensitive C-reactive protein,hs-CRP)、降钙素原(Procalcitonin,PCT)]水平。结果治疗后观察组总有效率95.56%(43/45)高于对照组84.09%(37/44),差异有统计学意义(P<0.05)。治疗后两组患儿TNF-α、IL-6、hs-CRP、PCT炎症因子水平较治疗前明显降低,差异有统计学意义(P<0.05);且观察组低于对照组,差异有统计学意义(P<0.05)。治疗后两组患者FEV1、PEF25、FVC、PaO_(2)水平均较治疗前升高,PaCO_(2)水平均较治疗前降低,差异有统计学意义(P<0.05);且观察组FEV1、PEF25、FVC、PaO_(2)水平均明显高于对照组,PaCO_(2)水平明显低于对照组,差异有统计学意义(P<0.05)。结论在小儿支气管肺炎治疗的过程中使用麻杏石甘汤与阿奇霉素联合治疗能有效提高患儿治疗总好转率,降低患者TNF-α、IL-6、hs-CRP、PCT等炎症因子水平,显著改善患儿肺功能以及血气状况,对小儿支气管肺炎的治疗具有重要帮助,应广泛应用在临床治疗中。

关键词：麻杏石甘汤阿奇霉素小儿支气管肺炎治疗疗效炎症因子水平

An Improved Mumford-Shah Model and Its Applications to Image Processing with the Piecewise Constant Level Set Method

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自动化学报 2007年第12期33卷 1259-1262页

作者： song jin-ping LI Shuai-Jie Institute of Applied Mathematics College of Mathematics and Information ScienceHenan UniversityKaifeng 475004P.R.China

为快分割并且降噪，提高 penalization 学期的古典 Mumford-Shah (MS ) 模型需要，即增加 penalization 参数，它导致目标的渐渐的消失。在这份报纸，我们建议一个改进 Mumford-Shah (IMS ) 模型避免现象，并且采用 piecewise 常数水平... 详细信息

为快分割并且降噪，提高 penalization 学期的古典 Mumford-Shah (MS ) 模型需要，即增加 penalization 参数，它导致目标的渐渐的消失。在这份报纸，我们建议一个改进 Mumford-Shah (IMS ) 模型避免现象，并且采用 piecewise 常数水平集合方法(PCLSM ) 和坡度降下方法解决最小化问题。数字实验被给显示出新模型和算法的效率和优点。

关键词：分段持续水平集方法分割降噪经典MS模型最小化算法

Electron content near the lunar surface using dual-frequency VLBI tracking data in a single lunar orbiter mission

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Research in Astronomy and Astrophysics 2015年第5期15卷 753-763页

作者： Zhen Wang Na Wang jin-song ping Key Laboratory of Radio Astronomy Xinjiang Astronomical Observatory Chinese Academy of Sciences Key Laboratory of Lunar and Deep Space Exploration National Astronomical ObservatoriesChinese Academy of Sciences

In VLBI observations of Vstar, a subsatellite of the Japanese lunar mission SELENE, there were opportunities for lunar grazing occultation when Vstar was very close to the limb of the Moon. This kind of chance made it possible to probe the thin plasma layer above the Moon＇s surface as a meaningful by-product of VLBI, by using the radio occultation method with coherent radio waves from the S/X bands. The dual-frequency measurements were carried out at Earth-based VLBI stations. In the line-of-sight direction between the satellite and the ground-based tracking station where VLBI measurements were made, the effects of the terrestrial ionosphere, interplanetary plasma and the thin lunar ionosphere mixed together in the combined observables of dual-frequency Doppler shift and phase shift. To separate the variation of the ionospheric total electron content （TEC） near the surface of the Moon from the mixed signal, the influences of the terrestrial ionosphere and interplanetary plasma have been removed by using an extrapolation method based on a short-term trend. The lunar TEC is estimated from the dual-frequency observation for Vstar from UT 22：18 to UT 22：20 on 2008 June 28 at several tracking stations. The TEC results obtained from VLBI sites are identical, however, they are not as remarkable as the result obtained at the Usuda deep space tracking station.

关键词： planets and satellites atmospheres -- occultations --detection

Plastic deformation behavior of a Cu-10Ta alloy under strong impact loading

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Defence Technology（防务技术） 2024年第2期32卷 368-382页

作者： ping song Jianghai Liu Wenbin Li Yiming Li Research Institute of Chemical Defense Academy of Military ScienceBeijing102205China Ministerial Key Laboratory of ZNDY Nanjing University of Science and TechnologyNanjing210094China

In this work,a Cu-10Ta alloy with a copper to tantalum mass ratio of 9:1 is prepared using powder metallurgy *** properties of the alloy,including density,microstructure,melting point,and constant-volume specific heat,are *** the split Hopkinson pressure bar(SHPB)and flyerplate impact experiments,the relationship between equivalent stress and equivalent plastic strain of the material is studied at temperatures of 298-823 K and under strain rates of 1×10^(-3)-5.2×10^(3)s^(-1),and the Hugoniot relationship at impact pressures of 1.46-17.25 GPa and impact velocities of 108-942 m/s is *** of the Cu-10Ta microstructure that occurs during high-strain-rate impact is *** indicate that the Cu-10Ta alloy possesses good thermal stability,and at ambient temperatures of up to 50%its melting point,stress softening of less than 15%of the initial strength is observed.A modified J-C constitutive model is employed to accurately predict the variation of yield strength with strain *** strong impact,the copper phase is identified as the primary source of plastic deformation in the Cu-10Ta alloy,while significant deformation of the high-strength tantalum particles is less ***,the longitudinal wave speed D is found to correlate linearly with the particle velocity u upon strong *** reveals that the sound speed and spallation strength of the alloy increase with increasing impact pressure.

关键词： Cu-10Ta SHPB Plastic deformation Flyer impact Hugoniot relationship

Determination of the free lunar libration modes from ephemeris DE430

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Research in Astronomy and Astrophysics 2017年第12期17卷 89-94页

作者： Yong-Zhang Yang jin-Ling Li jin-song ping Hideo Hanada Shanghai Astronomical Observatory Chinese Academy of SciencesShanghai 200030China National Astronomical Observatories Chinese Academy of SciencesBeijing 100012China University of Chinese Academy of Sciences Beijing 100049China RISE Project National Astronomical Observatory of JapanOshu 0230861Japan

The Moon’s physical librations have been extensively studied, and elaborate researches have been developed for the purpose of deriving accurate modes of free librations. Our motivation comes from the Planetary and Lunar Ephemeris DE430 by JPL/NASA, which was created in April 2013,and is reported to be the most accurate lunar ephemeris today using the data from Gravity Recovery and Interior Laboratory（GRAIL）. Therefore, the residuals after fitting the model have reduced owing to improvement in the libration models, and the free librations embedded in the Euler angles have also improved. We use Fourier analysis to extract the approximate frequencies from DE430 and then a quadratic interpolation method is used to determine higher accuracy frequencies. With the frequencies,the linear least-squares fitting method is employed to fit the lunar physical librations to DE430. From this analysis we identified the three modes of free physical librations, and estimated the amplitudes as 1.471′′in longitude, 0.025′′in latitude and 8.19′′× 3.31′′for the wobble, with the respective periods of1056.16, 8806.9 and 27262.99 d. Since the free librations damp with time, they require recent excitation or a continuous stimulating mechanism in order to sustain.

关键词： Moon physical librations Fourier analysis least squares method

Influence of the layered Moon and Earth’s orientation on lunar rotation

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Research in Astronomy and Astrophysics 2020年第2期20卷 45-52页

作者： Yong-Zhang Yang jin-song ping Jian-Guo Yan jin-Ling Li State Key Laboratory of Information Engineering in Surveying Mapping and Remote SensingWuhan UniversityWuhan 430070China Instituto de Astronomia y Ciencias Flanetarias de Atacama Universidad de AtacamaCopayapu 485Chile National Astronomical Observatories Chinese Academy of SciencesBeijing 100012China Shanghai Astronomical Observatory Chinese Academy of SciencesShanghai 200030China University of Chinese Academy of Sciences Beijing 100049China

One of the most efficient ways to probe the lunar inner structure at present is through the study of its *** and range rate(Doppler) data between the Chang’E-3 lander and station on the Earth were collected from the beginning of the Chang’E-3 lunar mission in *** observation data,taken together with the existing lunar laser ranging data,provide a new approach to extend research on the Earth-Moon *** high precision of current observation data imposes exacting demands,making it necessary to include previously neglected *** this paper,motivated by progress of the Chinese lunar exploration project and to use its data in the near future,two lunar models:a one-layer model and a two-layer model with a fluid core,were applied to the rotational equations based on our implemented algorithm of the Moon’s *** was a difference of about 0.5′′in φ and ψ,but 0.2′′in θ between the two *** result confirms that stratification of the inner structure of the Moon can be inferred from rotation *** also added precise Earth rotation parameters in our model;the results show that this factor is negligible at present,due to the limited precision of the existing *** results will help us understand the rotational process clearly and build a more realistic Earth-Moon model when we combine Lunar Laser Ranging data with high precision radio data to fit lunar motion in the near future.

关键词： Moon rotation model numerical integration Earth orientation parameters

Reproductive biology of Hemitripterus villosus in the Bohai Strait,China

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Journal of Oceanology and Limnology 2024年第3期42卷 881-892页

作者： ping SUN song QIN Zhengyi LIU Longchuan ZHUANG Key Laboratory of Coastal Biology and Biological Resource Utilization Yantai Institute of Coastal Zone ResearchChinese Academy of SciencesYantai 264003China University of Chinese Academy of Sciences Beijing 100049China Center for Ocean Mega-Science Chinese Academy of SciencesQingdao 266071China

To understand the reproductive biology of Hemitripterus villosus in the Bohai Strait,and fill the key knowledge gap in verifying reproductive seasonality and documenting gonadotropin dependent reproductive cycle of this species,a year-round detail study was conducted for the first *** total,263 individuals were randomly sampled off the coasts of the Bohai *** show that and the overall female-to-male ratio(1.35:1)did not differ significantly from the 1:1 sex *** length and weight relationship for females and males were regressed,depicting an isometric growth for both *** reproductive phases of the complete gonadotropin dependent reproductive cycle in both sexes were *** monthly variations in the gonadosomatic and hepatosomatic indexes for both sexes further indicated that this species spawns a single batch of eggs per year and the peak spawning period is from October to *** average diameter of eggs ranged from 2.10 to 3.57 *** length at first sexual maturity was 224.87 mm for females and 241.26 mm for *** positive relationships between absolute fecundity and fish size,and also gonadal weight were *** from the Bohai Strait exhibited smaller body size,smaller egg diameter,lower gonadosomatic index,lower absolute fecundity,and higher population extinction risk than the other populations’studied *** findings contribute to understanding the status of this isolated westernmost population,and we emphasize that more efficient protection measures for the species and control measures are urgently required to improve the coastal environment in the Bohai Strait.

关键词： Hemitripterus villosus Bohai Strait fecundity length at first maturity reproductive seasonality

Chronic administration of triclosan leads to liver fibrosis through hepcidin-ferroportin axis-mediated iron overload

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Journal of Environmental Sciences 2024年第3期137卷 144-154页

作者： jing Liu Lecong Zhang Fang Xu ping Zhang Yang song College of Eco-Environmental Engineering Guizhou Minzu UniversityGuiyang 550025China The Institute of Karst Wetland Ecology Guizhou Minzu UniversityGuiyang 550025China State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China

Triclosan(TCS)has been manufactured as an antibacterial compound for half a ***,it is widely used in various personal care products;however,its potential adverse effects raise a lot of ***,we create a long-term oral administration mouse model and identify the corresponding hepatotoxicity of *** discover that daily intragastric administration of 10 mg/kg TCS to mice for 12 weeks results in severe hepatic *** study displays that hepatic iron increased 18%,23%and 29%upon oral TCS treatment for4,8 and 12 weeks,*** by hepatic iron variation,splenic and duodenal iron are increased,which indicates systemic iron *** only excessive iron accumulated in the liver,abnormal hepatic malondialdehyde,prostaglandin synthase 2 and glutathione peroxidase 4 are pointed to *** study uncovers that hepcidin expression increases 7%,10%,4%in serum and 2.4-,4.8-,and 2.3-fold on transcriptional levels upon TCS exposure for 4,8 and 12 weeks,*** together,the mice in the TCS-treated group show disordered systemic iron homeostasis via the upregulated hepatic hepcidin-ferroportin ***,both hepatic iron overload(systemic level)and hepatocyte ferroptosis(cellular level)are accused of TCS-induced liver ***■,an iron scavenger,significantly ameliorates TCS-induced liver *** summary,this study confirms the impact of TCS on liver fibrosis;a critical signal pathway is also *** significance of the current study is to prompt us to reevaluate the“pros and cons”of TCS applications.

关键词： Triclosan Iron metabolism Hepcidin Hepatotoxicity Liver fibrosis