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Retrieval of snow depth on Antarctic sea ice from the FY-3D MWRI data

Acta Oceanologica Sinica 2023年第12期42卷 105-117页

作者： Zhongnan Yan Xiaoping Pang qing ji Yizhuo Chen Chongxin Luo Pei Fan Zeyu Liang Chinese Antarctic Center of Surveying and Mapping Wuhan UniversityWuhan 430079China Key Laboratory of Polar Surveying and Mapping Science Ministry of Natural ResourcesWuhan 430079China

The snow depth on sea ice is an extremely critical part of the *** and understanding changes of snow depth on Antarctic sea ice is beneficial for research on sea ice and global climate *** Microwave Radiation Imager(MWRI)sensor aboard the Chinese FengYun-3D(FY-3D)satellite has great potential for obtaining information of the spatial and temporal distribution of snow depth on the sea *** comparing in-situ snow depth measurements during the 35th Chinese Antarctic Research Expedition(CHINARE-35),we took advantage of the combination of multiple gradient ratio(GR(36V,10V)and GR(36V,18V))derived from the measured brightness temperature of FY-3D MWRI to estimate the snow *** method could simultaneously introduce the advantages of high and low GR in the snow depth retrieval model and perform well in both deep and shallow snow *** on this,we constructed a novel model to retrieve the FY-3D MWRI snow depth on Antarctic sea *** new model validated by the ship-based observational snow depth data from CHINARE-35 and the snow depth measured by snow buoys from the Alfred Wegener Institute(AWI)suggest that the model proposed in this study performs better than traditional models,with root mean square deviations(RMSDs)of 8.59 cm and 7.71 cm,respectively.A comparison with the snow depth measured from Operation IceBridge(OIB)project indicates that FY-3D MWRI snow depth was more accurate than the released snow depth product from the *** Snow and Ice Data Center(NSIDC)and the National Tibetan Plateau Data Center(NTPDC).The spatial distribution of the snow depth from FY-3D MWRI agrees basically with that from ICESat-2;this demonstrates its reliability for estimating Antarctic snow depth,and thus has great potential for understanding snow depth variations on Antarctic sea ice in the context of global climate change.

关键词： snow depth Antarctic sea ice passive microwave FY-3D

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Design and performance study of a dielectric-filled cavity beam current monitor for HUST-PTF

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Nuclear Science and Techniques 2023年第8期34卷 75-85页

作者： ji-qing Li Kuan-Jun Fan Zheng-Zheng Liu jian Wang Qu-Shan Chen jin-Feng Yang State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074China The Institute of Scientific and Industrial Research Osaka University8-1 MihogaokaIbarakiOsaka 567-0047Japan

To guarantee the exact proton dose applied to patients and ensure treatment safety while disrupting and destroying tumor cells,it is essential to accurately monitor the proton beam current in real time during patient *** clinical treatment requires a proton beam current in the∼nA range,nondestructive beam current monitors(BCMs)are preferred to minimize the degradation of beam ***,this poses significant challenges in accurately monitoring such extremely low beam *** study proposes a cavity-type BCM equipped with a dielectric plate to reduce its dimensions and achieve sufficient measurement sensitivity for practical requirements.A prototype cavity BCM was fabricated,and off-line testing was performed using a metal wire to simulate the beam to study its *** the simulation and experi-mental results showed that the cavity BCM could measure ultralow proton beam currents with a resolution up to 0.03 nA.

关键词： Proton therapy Beam current Cavity BCM Nondestructive

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λ-central BMO Estimates for Higher Order Commutators of Hardy Operators

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Communications in Mathematical Research 2014年第3期30卷 201-206页

作者： WU jiANG-LONG LIU qing-GUO ji You-qing Department of Mathematics Mudanjiang Normal University Laboratory for Multiphase Processes University of Nova Gorica

In this paper, the λ-central BMO estimates for higher order commuta-tors of Hardy operators on central Morrey space Lq,λ（Rn） are established. In the meanwhile, the corresponding corollary for central BMO estimates... 详细信息

关键词： λ-central BMO space commutator Hardy operator central Morrey space

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PPC-based Reactive Hot Melt Polyurethane Adhesive(RHMPA)--Efficient Glues for Multiple Types of Substrates

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Chinese Journal of Polymer Science 2018年第1期36卷 58-64页

作者： Zeng-He Liu ji-qing Huang Li-jie Sun Dong Lei jing Cao Shuo Chen Wen-Chang Shih Feng-Ling qing Zheng-Wei You State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of ChemistryChemical Engineering and BiotechnologyDonghua UniversityShanghai 201620China Beijing Institute of Aerospace Testing Techn-ology Beijing 100074China State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringDonghua UniversityShanghai 201620China Department of Chemical and Materials Engineering National Chin-Yi University of TechnologyTaichung 41170China Key Laboratory of Organofluorine Chemistry Shanghai Institute of Organic ChemistryChinese Academy of ScienceShanghai 200032China

Tens of billion metric tons of anthropogenic CO_2 discharged from the burning of fossil fuels lead to an enormous environmental and resource burden. It is charming to transform CO_2 to desirable, economical chemicals and materials. Poly（propylene carbonate）（PPC） is an emerging CO_2-based material. Herein, we report the design, synthesis and characterization of the reactive hot melt polyurethane adhesive（RHMPA） based on PPC polyol. The resultant RHMPAs exhibit good adhesion properties to multiple substrates including plastics（PC, PMMA, ABS） and metals（aluminium, steel）, which is comparable to or even better than conventional RHMPAs prepared from petro-based polyol. Furthermore, the PPC-based RHMPAs have tunable mechanical properties, and are thermally stable in the typical working range of bonding process（up to 270 °C）. The study is expected to expand the applications of PPC and provide a new type of CO_2-based renewable and eco-friendly materials.

关键词： CO_2-based poly(propylene carbonate) Reactive hot melt polyurethane adhesive Sustainable adhesive Adhesion property

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Synthesis and Characterization of Fluorine-containing Poly(ether ether ketone)s

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Chemical Research in Chinese Universities 2010年第4期26卷 672-674页

作者： ZHANG Pei ZHAO Yun TANG Xin-liang ZHOU Ming-ji jiAO qing-ze School of Chemical Engineering and Environment Beijing Institute of Technology Beijing 100081 P. R. China

Poly（ether ether ketone）s（PEEK） are a class of high performance engineering thermoplastics known for their excellent thermal, mechanical, and electrical properties. This class of advanced materials has currently received considerable attention for potential application in aerospace, electronics, automobile and other high technology fields. However, it is difficult for PEEK to be processed because of their high melting temperature and poor solubility.

关键词： Fluorine-containing polymer Solubility Dielectric constant

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A Note on the Stability of K-g-frames

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Communications in Mathematical Research 2019年第4期35卷 345-353页

作者： XIANG ZHONG-QI ji You-qing College of Mathematics and Computer Science Shangrao Normal University

In this paper,we present a new stability theorem on the perturbation of K-g-frames by using operator theory *** result we obtained improves one corresponding conclusion of other authors.

关键词： g-frame K-g-frame frame operator stability

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Holomorphic Curves into ■~N(C) That Share a Set of Moving Hypersurfaces

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Communications in Mathematical Research 2019年第2期35卷 97-105页

作者： Yang Liu ji You-qing(Communicated) School of Mathematics & Physics Science and Engineering Anhui University of Technology Maanshan Anhui 243032 不详

Let F be a family of holomorphic curves of a domain D in C into a closed subset X in ■~N(C). Let Q_1(z),…, Q_(2t+1)(z) be moving hypersurfaces in ■~N(C) located in pointwise t-subgeneral position with respect to X. If each pair of curves f and g in F share the set {Q_1(z),…, Q_(2t+1)(z)}, then F is normal on D. This result greatly extend some earlier theorems related to Montel's criterion.

关键词： Holomorphic mapping normal family value distribution theory complex projective space hypersuface

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Certain Fixed Point Theorems and Application to the Fractal Space

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Communications in Mathematical Research 2015年第2期31卷 180-192页

作者： ji You-qing Ri Song-il School of Mathematics Jilin University Department of Mathematics University of Science

In this paper, we present some important generalizations of the Banach contraction principle, in which the Lipschitz constant k is replaced by some real- valued control function. For the applications to the fractal sp... 详细信息

关键词： fixed point generalized contraction Hausdorff distance fractal topo-logical equivalence

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Cloning One CIPK Gene from a Thermo-Sensitive Genic Self-Incompatible Line in Maize Expressing Under Different Temperatures

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Agricultural Sciences in China 2011年第6期10卷 813-819页

作者： LIN Xing-e ji Hong-qing NIU Jun-hai HU Yan-min FU Zhong-jun LIU Zong-hua TANG ji-hua College of Agronomy Henan Agricultural University Zhengzhou 450002 P.R.China

A calcineurin B-like protein-interacting protein kinases （CIPK） gene was cloned （EU 424058） from a thermo-sensitive genic self-incompatibility （TSGI） line, HE97, in maize, which was selected for suppression subtractive hybridization （SSH） library of the self-incompatible and self-compatible silks of the TSGI line under different temperatures. The full-length cDNA of the candidate CIPK-like gene consisted of 1 918 nucleotides and contained a 1 332-bp open reading frame in maize. Real-time PCR indicated that the candidate CIPK-like gene was highly expressed in the self-incompatible pollen of the TGSI line, and promoted elevated levels of calcium （Ca2＋）. High Ca2＋ concentrations in the pollen strongly inhibit pollen tube formation in silk of the same plant, thus inducing self-incompatibility （SI） under high temperature. These results implied that the CIPKs-like gene would play an important role in the regulation of HE97 characteristics under different temperatures, perhaps acting as a secondary messenger in the expression of SI in the TGSI line in maize.

关键词： CIPK gene cloning expression temperature maize

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The Synthesis and Structural Characterization of Two-dimensional Coordination Polymer {[Ni(phen)H_2O](μ_4-C_( 10)H_2O_8)_(1/2)}_n

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Chemical Research in Chinese Universities 2002年第4期18卷 474-477页

作者： YE Ling PAN Cheng-ling CHU De-qing WANG Li-min MU Zhong-cheng XU ji-qing Key Laboratory for Supramolecular Structure and Materials of Ministry of Education Jilin UniversityChangchun 130023P.R.China College of Chemistry Jilin UniversityChangchun 130023P.R.China Department of Chemistry Northeast Normal UniversityChangchun 130024P.R.China

The successful preparation of coordination polymers from modular precursors has provided a facile approach to develope solids and functional materials［1］.

关键词： Two-dimension Hydrothermal synthesis Inorganic-organic hybrid material Crystal structure

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