http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
The Updated Vversion of Chinese Evaluated Nuclear Data Library (CENDL-3.1)
Z. G. Ge,Z. X. Zhao,H. H. Xia,Y. X. Zhuang,T. J. Liu,J. S. Zhang,H. C. Wu 한국물리학회 2011 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.59 No.23
The updated Chinese Evaluated Nuclear Data Library CENDL-3.1 is an important achievement based on the nuclear data evaluation works in recent years, at China Nuclear Data Center (CNDC) in cooperation with China Nuclear Data Coordination Network (CNDCN). CENDL-3.1 contains the evaluated data for reactions with incident neutrons on 240 nuclides (from ^1H to ^(249)Cf) in energy region of 10^(-5) eV-20MeV. All data obtained according to the evaluations of experimental data and the predictions of the nuclear reaction model calculations. For most important nuclei of this library, the benchmark testing and validations have been performed, the comparisons with other nuclear data libraries (ENDF/B, JENDL, BROND, JEF, et al.) have been done. The testing version of CENDL-3.1 is CENDL-3.0, which has been provided for China domestic users. Follow the using back feed of CENDL-3.0, a lot of improvement has been done. The CENDL3.1 is provided for all users by ENDF format and is released to the world in the end of 2009. The overview, evaluation methodology and some important results of new evaluations, benchmark testing and validations for this library will be introduced in this contribution.
Preparation and Characterization of Nanoparticles
Liu Z.Q.,Li Z.H.,Zhou Y.P.,Ge C.C. 한국분말야금학회 2006 한국분말야금학회 학술대회논문집 Vol.2006 No.1
The nanoparticles were synthesized by photochemical deposition in a suspension system. The prepared products were characterized by means of XRD, Uv-vis and photoluminescence spectra (PL). Its photocatalytic activity was investigated by the decomposition of methylene blue (MB) solution under illumination of visible and ultraviolet light, respectively. Compared to , the photocatalytic activity of the as-prepared is obviously enhanced due to the decreasing recombination of a photoexcitated electron-hole pairs. The Mechanism in which photocatalytic activity is enhanced has been discussed in detail.
P. Z. Si,X. L. Wang,X. F. Xiao,H. J. Chen,X. Y. Liu,L. Jiang,J. J. Liu,Z. W. Jiao,H. L. Ge 한국자기학회 2015 Journal of Magnetics Vol.20 No.3
Cr₂O₃ nanoparticles were prepared via one-step reactive laser ablation of Cr in oxygen. The metastable CrO₂ phase was obtained through the subsequent oxidation of Cr₂O₃ nanoparticles under O₂ with gas pressures of up to 40 MPa. The as-prepared Cr₂O₃ nanoparticles are spherical or rectangular in shape with sizes ranging from 20 nm to 50 nm. High oxygen pressure annealing is effective in producing meta-stable CrO₂ from as-dried Cr₂O₃ nanoparticles, and the Cr₂O₃ nanoparticles exhibit a weak ferromagnetic behavior with an exchange bias of up to 11 mT that can be ascribed to the interfacial exchange coupling between uncompensated surface spins and the antiferromagnetic core. The Cr₂O₃/CrO₂ nanoparticles exhibit an enhanced saturation magnetization and a reduced exchange bias with an increasing faction of CrO₂ due to the elimination of uncompensated surface spins over the Cr₂O₃ nanoparticles when exposed to a high pressure of O₂ and/or possible phase segregation that results in a smaller grain size for both Cr₂O₃ and CrO₂.
Magnetic-field-enhanced reactive synthesis of MnBi from Mn nanoparticles
Si, P.Z.,Yang, Y.,Yao, L.L.,Qian, H.D.,Ge, H.L.,Park, J.,Chung, K.C.,Choi, C.J. Elsevier 2019 Journal of magnetism and magnetic materials Vol.476 No.-
<P><B>Abstract</B></P> <P>The isotropic nanoparticles (NPs) and anisotropic bulk samples of MnBi were prepared from Mn NPs by using zero-field and field-assisted reactive sintering, respectively. The MnBi NPs are irregular in shape with size <I>d</I> < 600 nm, which is slightly larger than the precursor Mn NPs. The fraction of MnBi in the zero-field sintered NPs is higher than 68.6 wt%. The large surface area and small size of the Mn NPs enhanced the formation of ferromagnetic phase during sintering and the magnetic performance of the MnBi NPs, which show a coercivity (<I>H<SUB>c</SUB> </I>) up to 0.8 T and a remanent magnetization (<I>M<SUB>r</SUB> </I>) up to 44.5 Am<SUP>2</SUP>/kg at room temperature. The magnetic fields enhanced the formation of MnBi phase significantly and oriented the <I>c</I>-axis of the MnBi grains grown along the external fields during reactive sintering. A fraction of 63 wt% MnBi was formed in field-sintering within 2 h, whereas only 58.5 wt% MnBi was formed in zero-field-sintering for 48 h. The room-temperature <I>H<SUB>c</SUB> </I> and <I>M<SUB>r</SUB> </I> of the field-sintered bulk anisotropic MnBi reached up to 0.12–0.17 T and 37 Am<SUP>2</SUP>/kg, respectively.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Isotropic MnBi nanoparticles were prepared by reactive sintering of Mn nanoparticles and Bi. </LI> <LI> Anisotropic bulk MnBi was prepared by reactive sintering under a magnetic field of 5 T. </LI> <LI> Magnetic fields enhance the formation of MnBi and orient the <I>c</I>-axis of MnBi along the fields. </LI> </UL> </P>
Performance Analysis of Packet Transport Network Communication for Integrated Wide-Area Protection
Sheng-ming Ge,Z Q Bo,Lin Wang,Zhan-feng Fan,Xing Liu,Feng-quan Zhou 보안공학연구지원센터 2016 International Journal of Grid and Distributed Comp Vol.9 No.3
As a new protection, wide-area protection enables protective relaying, and automatic control based on electric power system network communications and comprehensive judgment of multi-point information, which plays an increasingly important role in the secure and stable operation of electric power system. Interaction of wide-area information relies on communication network featuring high reliability and low time delay. On the other hand, most service of power transformation station is gradually towards IP and data oriented, along with the development of smart grid. This paper aims to introduce the wide-area protection technology supported by Packet Transport Network (PTN) communication technology, with analyzing the QoS (Quality of Service) network assurance architecture of PTN network, which establishes three planes, including transport plane, management plane, and control plane, based on ASON (Automatically Switched Optical Network) technology. After demonstrating the QoS assurance system of PTN from traffic control and transmission route, this paper introduces PTN networking test. Based on detailed parameters in the test results, the transmission performance of PTN on time delay, protection, and time synchronization of various electric power communication services are analyzed, with showing that PTN can fully meet the requirements of electric power communication.
Wang, X.L.,Si, P.Z.,Ge, H.L.,Shinde, K.P.,Chung, K.C.,Choi, C.J. Elsevier 2017 SOLID STATE SCIENCES Vol.67 No.-
<P><B>Abstract</B></P> <P>Ultra-high purity CrO<SUB>2</SUB> was prepared by decomposing CrO<SUB>3</SUB> in O<SUB>2</SUB> with gas pressures up to 40 MPa, which were maintained throughout the decomposition process of CrO<SUB>3</SUB> to prevent the formation of any other phases of chromium oxides. Our method is different from the traditional methods that start from or under ambient pressures. The high oxygen pressure makes the meta-stable CrO<SUB>2</SUB> stable from the initial stage of preparation. As a result, the purity of the as-prepared CrO<SUB>2</SUB> is improved, and this has been further proved by the highest magnetization of the samples. The as-prepared CrO<SUB>2</SUB> particles show very large grains with flat surfaces, octagonal cross-section, and straight edges, owing to the high mobility of Cr ions in CrO<SUB>2</SUB> at temperatures above its melting point. The lattice parameters of CrO<SUB>2</SUB> are <I>a</I> = 4.4176 Å and <I>c</I> = 2.9144 Å. The maximum value of the magnetic entropy change of the high purity CrO<SUB>2</SUB> particles is ∼2.83 J/kg·K for an applied field of 1.5 T. The preparation of pure CrO<SUB>2</SUB> is important for studying its intrinsic properties and for applications in spintronic devices.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Ultra-high purity CrO<SUB>2</SUB> was prepared. </LI> <LI> High O<SUB>2</SUB>-gas pressure was employed. </LI> <LI> The CrO<SUB>2</SUB> rods show straight edges and high magnetization. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>