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On the Relation Between Coronal Green Line Brightness and Magnetic Fields Intensity

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Research in Astronomy and Astrophysics 2022年第7期22卷 128-138页

作者： xue-fei zhang Yu Liu Ming-Yu Zhao Teng-fei Song Jing-Xing Wang Xiao-Bo Li Zi-Han Li Yunnan Observatories Chinese Academy of SciencesKunming 650011China University of Chinese Academy of Sciences Beijing 100049China Yunnan Normal University School of Physics and Electronic InformationKunming 650000China

Two-dimensional(2 D) solar coronal magnetogram is difficult to be measured directly until *** the previous knowledge,a general relation has been noticed that the brighter green-line brightness for corona,the higher coronal magnetic field intensity may correspond *** try to further reveal the relationship between coronal green line brightness and magnetic field intensity,we use the 2 D coronal images observed by Yunnan Observatories Greenline Imaging System(YOGIS) of the 10 cm Lijiang coronagraph and the coronal magnetic field maps calculated from the current-free extrapolations with the photospheric magnetograms taken by Helioseismic and Magnetic Imager(HMI) on board the Solar Dynamics Observatory(SDO) *** our analysis,we identified the coronal loop structures and construct two-dimensional maps of the corresponding magnetic field intensity in the plane of the sky(POS) above the *** derive the correlation coefficients between the coronal brightness and the magnetic field intensity for different heights of coronal *** further use a linear combination of a Gaussian and a quadratic profile to fit the correlation coefficients distribution,finding a largest correlation coefficient of 0.82 near 1.1 R(solar radii) where is almost the top of the closed loop *** the small closed loop system identified,the correlation coefficient distributions crossing and covering the loop are *** also investigate the correlation with extended heliocentric latitude zones and long period of one whole Carrington Rotation,finding again that the maximum correlation coefficient occurs at the same *** is the first time for us to find that the correlation coefficients are high(all are larger than 0.8) at the loop-tops and showing poor correlation coefficients with some fluctuations near the feet of the coronal *** findings indicate that,for the heating of the low-latitude closed loops,both DC(dissipation of currents) and AC(dissipation of Alfvé

关键词： Sun:magnetic fields Sun:corona Stars:coronae Sun:activity Sun:atmosphere Sun:coronal mass ejections(CMEs) Sun:fundamental parameters Sun:heliosphere Sun:UV radiation

A Novel CA4P Polymeric Nanoparticle for Murine Hepatoma Therapy

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Chinese Journal of Polymer Science 2023年第8期41卷 1223-1229,I0007页

作者： Zhi-Lin Liu Xi-Tong Ren Yue Huang Jia-Li Sun Xiao-Shuang Wang Meng-fei Zheng Lin-Jie Cui xue-fei zhang Zhao-Hui Tang Key Laboratory of Polymer Ecomaterials Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China Jilin Biomedical Polymers Engineering Laboratory Changchun 130022China School of Applied Chemistry and Engineering University of Science and Technology of ChinaHefei 230026China No.1 Department of Neurology China-Japan Union Hospital of Jilin UniversityChangchun 130033China Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education and Key Laboratory of Polymeric Materials&Application Technology of Hunan Province College of ChemistryXiangtan UniversityXiangtan 411105China

Combretastatin A4 phosphate(CA4P)is a potent vascular disrupting agent with good water ***,it is only effective at high doses,which decreases clinical ***,we designed stable CA4P polymeric nanoparticles(CA4P NPs)consisting of various cholesterol derivatives,and with a drug loading efficacy of 93%.The nanoparticles released CA4P in a sustained manner and achieved a 72%inhibition rate in the murine H22 liver tumor model,which was about 2.9-fold higher than that of free CA4P(24.6%).Furthermore,the carrier components of CA4P NPs were metabolized to arginine,cholesterol,ethanol and poly(ethylene glycol)in vivo;therefore,the CA4P NPs are safe and have significant potential for clinical translation.

关键词： CA4P polymeric nanoparticle Cholesterol derivatives Vascular disrupting agent Phosphate-guanidine coordination Drug controlled release

Sonographic features of umbilical vein recanalization for a Rex shunt on cavernous transformation of portal vein in children

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World Journal of Clinical Cases 2020年第22期8卷 5555-5563页

作者： Yu-Qing zhang Qing Wang Mei Wu Ya Li Xiu-Liang Wei fei-xue zhang Yan Li Guang-Rui Shao Juan Xiao Department of Ultrasound The Second HospitalCheeloo College of MedicineShandong UniversityJinan 250033Shandong ProvinceChina Department of Radiology Qilu HospitalCheeloo College of MedicineShandong UniversityJinan 250012Shandong ProvinceChina Department of Nuclear Medicine The Second HospitalCheeloo College of MedicineShandong UniversityJinan 250033Shandong ProvinceChina Department of Radiology The Second HospitalCheeloo College of MedicineShandong UniversityJinan 250033Shandong ProvinceChina Center of Evidence-Based Medicine Institute of Medical SciencesThe Second HospitalCheeloo College of MedicineShandong UniversityJinan 250033Shandong ProvinceChina

BACKGROUND The Rex shunt was widely used as the preferred surgical approach for cavernous transformation of the portal vein(CTPV)in children that creates a bypass between the superior mesenteric vein and the intrahepatic left portal vein(LPV).This procedure can relieve portal hypertension and restore physiological hepatopetal ***,the modified procedure is technically demanding because it is difficult to make an end-to-end anastomosis of a bypass to a hypoplastic *** studies reported using a recanalized umbilical vein as a conduit to resolve this ***,the feasibility of umbilical vein recanalization for a Rex shunt has not been fully *** To investigate the efficacy of a recanalized umbilical vein as a conduit for a Rex shunt on CTPV in children by *** A total of 47 children who were diagnosed with CTPV with prehepatic portal hypertension in the Second Hospital,Cheeloo College of Medicine,Shandong University,were enrolled in this *** children received a recanalized umbilical vein as a conduit for a Rex shunt surgery and were enrolled in group ***-two children received the classic Rex shunt surgery and were enrolled in group *** sonographic features of the two groups related to intraoperative and postoperative variation in terms of bypass vessel and the LPV were *** The patency rate of group I(60.0%,9/15)was significantly lower than that of group II(87.5%,28/32)7 d after(on the 8th d)operation(P0.05).Moreover,3 mo after(at the beginning of the 4th mo)surgery,the inner diameter significantly widened and flow velocity notably increased for the bypass vessels and the sagittal part of the LPV compared to intraoperative values in both shunt groups(P<0.05).However,there was no significant difference between the two surgic

关键词： Cavernous transformation of the portal vein Rex shunt Recanalization Umbilical vein Ultrasonography

Site testing campaign for the Large Optical/infrared Telescope of China:general introduction of the Daocheng site

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Research in Astronomy and Astrophysics 2020年第6期20卷 151-161页

作者： Teng-fei Song Yu Liu Jing-Xing Wang xue-fei zhang Shun-Qing Liu Ming-Yu Zhao Xiao-Bo Li Zhan-Chuan Cai Qi-Wu Song Zi-Huang Cao Yu Ruan State Key Laboratory of Lunar and Planetary Science Macao University of Science and TechnologyMacaoChina Yunnan Observatories Chinese Academy of SciencesKunming 650216China Purple Mountain Observatory Chinese Academy of SciencesNanjing 210008China National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China Army Engineering University of PLA Chongqing 400042China

The Daocheng site is one of the three candidate sites for the Large Optical/infrared Telescope(LOT)of *** was discovered by Yunnan Observatories during the survey of potential sites for the next-generation large-aperture solar telescopes of *** paper describes the overview of the site,the observation platform and the monitor *** addition,simple statistical results are presented(from November,2016 up to December,2017).Detailed data results can refer to the overview of LOT site testing and data analysis articles,which were published during the same period.

关键词： site testing LOT Daocheng site observation platform

Comparison of the Coronal Green-line Intensities with the EUV Measurements from SDO/AIA

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Research in Astronomy and Astrophysics 2022年第7期22卷 191-205页

作者： xue-fei zhang Yu Liu Ming-Yu Zhao Ji-Hong Liu Abouazza Elmhamdi Teng-fei Song Zi-Han Li Hong-Bo Li fei-Yang Sha Jing-Xing Wang Xiao-Bo Li Yuan-Deng Shen Shun-Qing Liu Hong-fei Liang R.M.Al-Shammari Yunnan Observatories Chinese Academy of SciencesKunming 650011China University of Chinese Academy of Sciences Beijing 100049China Shijiazhuang University Shijiazhuang 050035China School of Physical Science and Technology Southwest Jiaotong UniversityChengdu 610031China Department of Physics and Astronomy King Saud UniversityP.O.Box 2455Riyadh 11451Saudi Arabia Yunnan Normal University School of Physics and Electronic InformationKunming 650500China Institute of Space Physics Luoyang Normal UniversityLuoyang 471934China

The intensity of the green line(Fe ⅩⅣ 5303 A) is the strongest in the visible spectrum of the solar corona,and this line has been used as long-term powerful diagnostic tools for studying the coronal configurations and hot plasma ***,it remains unclear and an open question whether there exists close relationship between the green line intensities and the coronal extreme ultraviolet(EUV) line emissions for various coronal *** this paper,we use the green-line data by the Lijiang YOGIS Lyot coronagraph and the EUV data from the Solar Dynamics Observatory/Atmospheric Imaging Assembly instruments in order to perform direct comparisons and analyses,based on two algorithms developed to extract particular features in the low *** is found that,among the correlation coefficients obtained between the intensities of 5303 A and the EUV lines,the coefficients between the green line and the 211 A wavelength for different coronal structures and different limb locations always keep the highest values(ranging from 0.89 to 0.99),which has not been reported *** result can be helpful and promising to link together the various physical processes involved at different heights in the corona by precisely tracking the bright loops or other features observed in 5303 A above the limb down to the correct surface locations revealed by the 211 A ***,the ground-based observations of the coronal green line and the space-based EUV observations at 211 A can advantageously complement each other when there is a need.

关键词： Sun:corona Sun:magnetic fields stars:coronae

Security Model for Analyzing Data Privacy in Multipath Transport

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China Communications 2012年第5期9卷 32-41页

作者： Song fei xue Miao zhang Sidong Beijing Jiaotong Univ Sch Elect & Informat Engn Natl Engn Lab Next Generat Internet Interconnect Beijing 100044 Peoples R China

In order to investigate the enhancement of data privacy by distributing data packets via multiple paths, this paper fommlates a security model and analyzes the privacy problem in mul- tipath scenarios leveraging inforrmtion theoretic concept. Based on proposed model, a privacy function related to the path number is discussed. We heuristically recommend the optin^al path num- ber and analyze the tradeoff among the perform- ance, resource consumption and privacy. For re- ducing the inforlmtion leakage, the data schedule algorithms are also proposed. The analytical model can provide guidelines for the multipath protocol design.

关键词： data privacy multipath transport in-formation theory tradeoff

Classification and mineralization of global lithium deposits and lithium extraction technologies for exogenetic lithium deposits

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China Geology 2023年第4期6卷 547-566页

作者： Mian-ping Zheng En-yuan Xing xue-fei zhang Ming-ming Li Dong Che Ling-zhong Bu Jia-huan Han Chuan-yong Ye Key Laboratory of Saline Lake Resources and Environment(Ministry of Natural Resources) Institute of Mineral ResourcesChinese Academy of Geological SciencesBeijing 100037China China University of Mining and Technology(Beijing) Beijing 100083China

A reasonable classification of deposits holds great significance for identifying prospecting targets and deploying exploration. The world ’s keen demand for lithium resources has expedited the discovery of numerous novel lithium resources. Given the presence of varied classification criteria for lithium resources presently, this study further ascertained and classified the lithium resources according to their occurrence modes, obtaining 10 types and 5 subtypes of lithium deposits(resources) based on endogenetic and exogenetic factors. As indicated by surveys of Cenozoic exogenetic lithium deposits in China and abroad,the formation and distribution of the deposits are primarily determined by plate collision zones, their primary material sources are linked to the anatectic magmas in the deep oceanic crust, and they were formed primarily during the Miocene and Late Paleogene. The researchers ascertained that these deposits,especially those of the salt lake, geothermal, and volcanic deposit types, are formed by unique slightly acidic magmas, tend to migrate and accumulate toward low-lying areas, and display supernormal enrichment. However, the material sources of lithium deposits(resources) of the Neopaleozoic clay subtype and the deep brine type are yet to be further identified. Given the various types and complex origins of lithium deposits(resources), which were formed due to the interactions of multiple spheres, it is recommended that the mineralization of exogenetic lithium deposits(resources) be investigated by integrating tectono-geochemistry, paleoatmospheric circulation, and salinology. So far, industrialized lithium extraction is primarily achieved in lithium deposits of the salt lake, clay, and hard rock types. The lithium extraction employs different processes, with lithium extraction from salt lake-type lithium deposits proving the most energy-saving and cost-effective.

关键词： Exogenetic lithium deposit Endogenetic lithium deposit Deposit type Salt lake type Deep brine type Geothermal type Volcanic deposit type Clay type Supernormal supergene enrichment SGSP lithium extraction techology Invention patent Mineral resource exploration engineering

MLVA and MLST typing of Brucella from Qinghai,China

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Infectious Diseases of Poverty 2016年第1期5卷 241-248页

作者： Jun-Ying Ma Hu Wang xue-fei zhang Li-Qing Xu Gui-Ying Hu Hai Jiang Fang Zhao Hong-Yan Zhao Dong-Ri Piao Yu-Min Qin Bu-Yun Cui Gong-Hua Lin Qinghai Institute for Endemic Disease Prevention and Control Xining 811602QinghaiChina State Key Laboratory for Infectious Disease Prevention and Control Collaborative Innovation Center for Diagnosis and Treatment of Infectious DiseasesNational Institute for Communicable Disease Control and PreventionChinese Center for Disease Control and PreventionBeijing 102206China Key Laboratory of Adaptation and Evolution of Plateau Biota Northwest Institute of Plateau BiologyChinese Academy of SciencesXining 810008QinghaiChina

Background:The Qinghai-Tibet Plateau(QTP)of China is an extensive pastoral and semi-pastoral area,and because of poverty and bad hygiene conditions,Brucella is highly prevalent in this *** order to adequately prevent this disease in the QTP region it is important to determine the identity of Brucella species that caused the ***:A total of 65 Brucella isolates were obtained from human,livestock and wild animals in Qinghai,a Chinese province in east of the *** molecular typing methods,MLVA(multi-locus variable-number tandem-repeat analysis)and MLST(multi locus sequence typing)were used to identify the species and genotypes of these ***:Both MLVA and MLST typing methods classified the 65 isolates into three species,***,*** and ***,which included 60,4 and 1 isolates *** MLVA method uniquely detected 34(Bm01~Bm34),3(Ba01~Ba03),and 1(Bs01)MLVA-16 genotypes for ***,*** and ***,***,none of these genotypes exactly matched any of the genotypes in the Brucella2012 MLVA *** MLST method identified five known ST types:ST7 and ST8(***),ST2 and ST5(***),and ST14(***).We also detected a strain with a mutant type(3-2-3-2-?-5-3-8-2)of ST8(3-2-3-2-1-5-3-8-2).Extensive genotype-sharing events could be observed among isolates from different host ***:There were at least three Brucella(***,*** and ***)species in Qinghai,of which *** was the predominant species in the area *** Brucella population in Qinghai was very different from other regions of the world,possibly owing to the unique geographical characteristics such as extremely high altitude in *** were extensive genotype-sharing events between isolates obtained from humans and other ***,sheep and blue sheep were important zoonotic reservoirs of brucellosis causing species found in humans.

关键词： Brucella Molecular identification Genotype Zoonotic host

Influence of introducing Zr,Ti,Nb and Ce elements on externally solidified crystals and mechanical properties of high-pressure die-casting Al–Si alloy

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 147-153页

作者： Junjie Li Wenbo Yu Zhenyu Sun Weichen Zheng Liangwei zhang Yanling xue Wenning Liu Shoumei Xiong Center of Materials Science and Engineering School of Mechanical and Electronic Control EngineeringBeijing Jiaotong UniversityBeijing 100044China Traffic&Transportation Engineering Central South UniversityChangsha 410075China Shanghai Synchrotron Radiation Facility Shanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201204China School of Materials Science and Engineering Tsinghua UniversityBeijing 100084China

High pressure die casting(HPDC)AlSi10Mn Mg alloy castings are widely used in the automobile *** can optimize the mechanical properties of castings through heat treatment,while the release of thermal stress arouses the deformation of large integrated ***,the development of non-heat treatment Al alloys is becoming the hot *** addition,HPDC contains externally solidified crystals(ESCs),which are detrimental to the mechanical properties of *** achieve high strength and toughness of non-heat treatment die-casting Al-Si alloy,we used AlSi9Mn alloy as matrix with the introduction of Zr,Ti,Nb,and *** influences on ESCs and mechanical properties were systematically investigated through three-dimensional reconstruction and thermodynamic *** results reveal that the addition of Ti increased ESCs'size and porosity,while the introduction of Nb refined ESCs and decreased ***,large-sized Al_3(Zr,Ti)phases formed and degraded the mechanical *** introduction of Ce resulted in the poisoning effect and reduced mechanical properties.

关键词： aluminium alloy high-pressure die-casting externally solidified crystals non-heat treatment