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Science China(Technological Sciences) 2019年第11期62卷 2009-2013页

作者： PAN Chunjiao GAO TengHua ITOGAWA Nobuhide HARUMOTO Takashi ZHANG ZhengJun NAKAMURA Yoshio SHI ji School of Materials Science and Engineering Tsinghua UniversityBeijing 100084China School of Materials and Chemical Technology Tokyo Institute of TechnologyTokyo 152-8552Japan Department of Applied Physics and Physico-Informatics Keio UniversityYokohama 223-8522Japan

Perpendicular magnetic anisotropy and perpendicular exchange bias of CoPt/FeMn bilayers fabricated by dc magnetron sputtering were investigated in this *** anisotropy,showing strong dependence on thickness of CoPt layer,changes from perpendicular magnetic anisotropy(PMA) into in-plane magnetic anisotropy when CoPt layer is thicker than 4.5 *** evolution of internal stress with thickness,from tensile to compressive,has been analyzed by sin^2 ψ method using an equal biaxial stress *** perpendicular exchange bias(PEB) has been successfully established due to PMA of CoPt and out-ofplane spin component of 3 Q-spin-structured *** thickness dependence of exchange bias field has been systematically investigated.

关键词： perpendicular magnetic anisotropy perpendicular exchange bias X-ray technique magnetic materials

Ga(ClO_4)_3-catalyzed Reaction of 1,2-Diamines and α-Bromoketones:Synthesis of 2-Substituted Quinoxalines

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Chemical Research in Chinese Universities 2012年第4期28卷 642-646页

作者： ji Yun-fei CHEN Tang-ming MAO Hai-feng ZOU jian-ping Key Laboratory of Organic Synthesis of jiangsu Province College of ChemistryChemical Engineering and Material ScienceSoochow UniversitySuzhou 215123P R.China

Ga（ClO4）3-catalyzed reaction of 1,2-aryldiamines and α-bromoketones to afford 2-substituted quinoxalines in good yields is *** reaction proceeded via grinding process with 10%（molar fraction） catalyst under solvent-free conditions at room *** unsymmetrical o-phenylenediamines bearing electron-withdrawing groups,regio-selective quinoxalines were obtained.

关键词： Ga(ClO4)3 1 2-Aryldiamine α-Bromoketone 2-Substituted quinoxaline Solvent-free reaction

Synthesis and Spectroscopic Properties of a Series of New tetra-Substituted Metal Phthalocyanines

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Chemical Research in Chinese Universities 2008年第2期24卷 123-128页

作者： YU Hai-ling YANG jin, FU Qiang MA ji-cheng LI Wei-li Faculty of Chemistry Northeast Normal University Changehun 130024 P. R. China

A new class of metal phthalocyanines（MPcs） containing four 8-quinolinol（8-QH） derivative moieties were successfully synthesized and characterized by mass spectroscopy, IR, UV-Vis and element analysis, the results of which were consistent with the proposed structures. All of them can dissolve in common organic solvents, such as dichloromethane, chloroform, and acetone. The effect of metal ion on the absorption of Q band was studied with UV-Vis spectra. The fluorescent properties for those complexes were also investigated.

关键词： Metal phthalocyanines Soluble 8-Quinolinol UV-Vis spectrum

Monitoring mine collapse by D-InSAR

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Mining Science and Technology 2010年第5期20卷 696-700页

作者： YANG Chengsheng ZHANG Qin ZHAO Chaoying ji Lingyun ZHU Wu School of Geological Engineering and Surveying Chang'an University Xi'an 710054 China Key Laboratory of Western China Mineral Resources and Geological Engineering Ministry of Education Xi'an 710054 China Second Crust Monitoring and Application Center CEA Xi 'an 710054 China

For harmful ground collapse and its special deformation characteristics,which causes SAR images to lose coherence,InSAR technology cannot be applied in monitoring surface collapse in mining *** took the Shenmu mining area in northern Shaanxi province as an example to study subsidence in mining areas and proposed an interpolated multi-view processing *** results show that this method can improve the detectable deformation gradient to a certain extent and can become a good reference value for monitoring large scale gradient *** also analyzed the rules for temporal decorrelation in mining.

关键词： D-InSAR coal mine subsidence monitoring collapse temporal decorrelation interpolated multi-view

Digital management technology and its application to investment casting enterprises

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China Foundry 2016年第5期13卷 301-309页

作者： Xiao-yuan ji Hu Ye jian-xin Zhou Wei-lin Deng State Key Laboratory of Materials Processing and Die & Mould Technology Huazhong University of Science & Technology

With the advent of Industry 4.0, more and more investment casting enterprises are implementing production manufacturing systems, especially in the last two years. This paper summarizes three new common requirements of the digital management aspect in precision casting enterprises, and puts forward three corresponding techniques. They are: the production process tracking card technology based on the main-sub card mode; the workshop site production process processing technology based on the barcode; and the equipment data integration technology. Then, this paper discusses in detail the principle, application and effect of these technologies; to provide the reference for enterprises to move towards digital casting and intelligent casting.

关键词： investment casting digital management task driven main-sub card workshop site processing data integration

Spermidine-induced two-dimensional DNA condensations on mica surfaces:A different pathway from condensations in solution

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Chinese Science Bulletin 2009年第14期54卷 2425-2433页

作者： ZHANG XingHua HOU XiMiao ji Chao LIMing DOU ShuoXing WANG PengYe Laboratory of Soft Matter Physics Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences Beijing 100190 China

With atomic force microscopy (AFM) we systematically studied the DNA condensations on mica surfaces induced by multivalent cation spermidine. The pattern of the DNA condensates is a flat single layer, with a core in the centre and DNA wrapping around it at high density. We assume this to be a two-dimensional condensation of free coiled DNA onto negatively charged mica surfaces by the multivalent cation. The DNA molecules condense on mica surfaces via a pathway different from the formation of toroids, rods or globules in bulk solutions. We give an explanation to why toroid structures are difficult to be observed by AFM, and further discuss the relationship between DNA condensations in solutions and on mica surfaces. The present work will be helpful for understanding the behaviors of DNA on charged surfaces, which might be significantly different from that in solutions.

关键词： DNA分子表面云母诱导亚精胺原子力显微镜多价阳离子溶液

Time to Take Actions to Reduce the Harmful Use of Alcohol in China

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China CDC weekly 2021年第4期3卷 74-77页

作者： Ning ji Yamin Bai jianwei Xu Min Liu Ainan jia National Center for Chronic and Noncommunicable Disease Control and Prevention China CDCBeijingChina

Harmful use of alcohol negatively impacts and harms the drinkers,the people around them,and society at *** use of alcohol ranks among the top 5 risk factors for disease,disability,and death worldwide,and alcohol consumption is related to approximately 230 health conditions including infectious disease,noncommunicable diseases,and injuries(1–2).

关键词： injuries alcohol diseases

Two new brominated diterpenes from Laurencia decumbens

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Chinese Chemical Letters 2007年第8期18卷 957-959页

作者： Nai Yun ji Xiao Ming Li Chuan Ming Cui Bin Gui Wang Key Laboratory of Experimental Marine Biology Institute of Oceanology Chinese Academy of Sciences Qingdao 266071 China Graduate School of the Chinese Academy of Sciences Beijing 100049 China

Two new brominated diterpenes, namely, laurendecumtriol and 11-deacetylpinnaterpene C, were isolated and identified from the marine red alga Laurencia decumbens. Their structures were established on the basis of vario... 详细信息

关键词： Laurencia decumbens Diterpene Laurendecumtriol 11-Deacetylpinnaterpene C

The study of methanol aromatization on transition metal modified ZSM-5 catalyst

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Chinese Journal of Chemical Engineering 2018年第9期26卷 1949-1953页

作者： Keming ji jiayao Xun Ping Liu Qingwen Song Junhua Gao Kan Zhang jingyuan Li State Key Laboratory of Coal Conversion Institute of Coal Chemistry Chinese Academy of Sciences

In this article, transition metals of Cu, La and Zn were used as adjuvant to prepare modified HZSM-5 by impregnation method. The catalysts were characterized by XRD, BET, NH_3-TPD and Py-IR to reveal the microstructure and acid property. The catalysis performances of methanol aromatization of catalysts were investigated in a fixed-bed reactor. The results show that the strength and distribution of acid center of these catalysts are significantly influenced by the species of transition metal. There are more mediate strong Lewis acid center in Zn modified HZSM-5 catalyst and therefore exhibits higher selectivity to aromatic, benzene, toluene and xylenes in the MTA reaction..

关键词： Aromatization ZSM-5 Metal modified

Gyrosynchrotron Radiation of Interplanetary CMEs

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空间科学学报 2012年第1期32卷 1-7页

作者： SUN Weiying WU ji WANG Chuanbing WANG Shui Center for Space Science and Applied Research Chinese Academy of SciencesBeijing 100190 School of Earth and Space Sciences University of Science and Technology of ChinaHefei 230026

CMEs(Coronal Mass Ejections) are an important means of energy release in the solar *** Polar Orbit Radio Telescope(SPORT) is a mission being proposed for observing the propagation of interplanetary CMEs from solar polar *** main payload onboard SPORT is a synthetic aperture interferometric radiometer,which receives radio emission of interplanetary CMEs. It is identified that there are mainly three radio emission mechanisms of CMEs,i.e.,bremsstrahlung, gyrosynchrotron emission and plasma *** these emission types,bremsstrahlung emission is the main emission mechanism of the high-density plasma clouds of interplanetary *** emission is the continuous emission generated by high-energy electrons from CMEs, while plasma emission is the main mechanism of transient radio bursts from *** this paper,the gyrosynchrotron emission of interplanetary CMEs is focused ***,the mechanism of gyrosynchrotron emission is ***,a review of the physical parameter models of background solar wind and interplanetary CMEs is *** these,the brightness temperature and polarization of gyrosynchrotron emission of interplanetary CMEs are calculated and ***, the detectability of gyrosynchrotron emission of interplanetary CMEs by radio meters is discussed briefly.

关键词：日冕物质抛射行星际辐射计等离子体发射排放机制电发射射电望远镜等离子体云