|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Supercondcuting properties in MgB2/Fe wires prepared by PIT method显示文摘The MgB2 formation was analyzed physically and chemically and the MgB2/Fe wires were fabricated by powder in tube (PIT) technology. The microstructure of MgB2 in wires was studied by the scanning electrical microscope (SEM), which shows a good connection of grains and the size of MgB2 grain is 13 mm. The results of Jc measured by the standard four probes method show that Jc value reaches 6.1?04 A/cm2 at 20 K in self field. | YAN Guo FENG Yong FU Baoquan LIU Chunfang JI Ping ZHANG Pingxiang ZHOU Lian | 2003 | Chinese Science Bulletin2003，48，13： | 4 |
| 2 | An Adaptive Multiscale Information Fusion Approach for Feature Extraction and Classification of IKONOS Multispectral Imagery over Urban Areas显示文摘 | HUANG Xin ZHANG Liangpei LI Pingxiang | 2007 | IEEE Geoscience and Remote Sensing Letters2007，4，4： | 1 |
| 3 | Classification and Extraction of Spatial Features in Urban Areas Using High-resolution Multispectral Imagery显示文摘 | HUANG Xin ZHANG Liangpei LI Pingxiang | 2007 | IEEE Geoscience and Remote Sensing Letters2007，4，2： | 1 |
| 4 | 显示文摘 | Zhou Lian Zhang Pingxiang Ji Ping | 1990 | Supercond Sci Technol1990，3，： | 1 |
| 5 | Strain influence on Jc behavior of Nb3Sn multifilamentary strands fabricated by internal tin process for ITER显示文摘 | Zhang Pingxiang Liang Ming Tang Xiande | 2008 | Physic C2008，46，1520： | 1 |
| 6 | High-resolution Hyper-spectral Image Classification with Parts-based Feature and Morphology Profile in Urban Area显示文摘High-resolution hyper-spectral image (HHR) provides both detailed structural and spectral information for urban study. However, due to the inherent correlation between spectral bands and within-class variability in the data, the data processing of HHR is a challenging work. In this paper, based on spectral mixture analysis theory, a new stack of parts description features were extracted, and then incorporated with a stack of morphology based spatial features. Partially supervised constrained energy minimization (CEM) and unsupervised nonnegative matrix factorization (NMF) were used to extract the part-features. The joint features were then integrated by SVM classifier. The advantages of this method are the representation of physical composition of the urban area by the parts-features and the show of multi-scale structure information by morphology profiles. Experiments with an airborne hyper-spectral data flightline over the Washington DC Mall were performed, and the performance of the proposed algorithm was evaluated in comparison with well-known nonparametric weighted feature extraction (NWFE) and feature selection method. The results shown that the proposed features-joint scheme consistently outperforms the traditional methods, and so can provide an effective option for processing HHR data in urban area. | HUANG Yuancheng ZHANG Liangpei LI Pingxiang ZHONG Yanfei | 2010 | Geo-Spatial Information Science2010，13，2： | 1 |
| 7 | A super-resolution reconstruction algorithm for surveillance images 显示文摘 | Zhang Liang-pei Zhang Hong-yan Shen Huan-feng Li Pingxiang | 2010 | Signal Processing2010，90，3： | 1 |
| 8 | Study of Modified TFA-MOD Method for YBCO Film Growth显示文摘 | Li Chengshan Lu Yangfeng Zhang Pingxiang | 2012 | Physics Procedia2012，36，： | 1 |
| 9 | The properties of YBCO superconductors prepared by a new approach:the powder melting process显示文摘 | Zhou Lian Zhang Pingxiang Ji Ping | 1990 | Supercond Science and Technology1990，3，3： | 1 |
| 10 | Phase Evolution Study and Optimization of the Heat Treatment Process for High Current Capacity Bi-2223 Tapes显示文摘Powder in tube process(PIT) was adopted for the fabrication of single filament Bi-2223 tapes, and a heat treatment process including the first heat treatment(HT1), intermediate rolling(IR), and second heat treatment(HT2) was performed. The phase evolution mechanism and microstructure changes during these heat treatment processes were systematically discussed. The influences of HT1 parameters on the phase evolution process of Bi-2223 tapes were discussed. With the optimized HT1 process, a proper Bi-2223 content of about 90% was achieved. HT2 process was also optimized by adding a post annealing process. An obvious increase of current capacity was obtained due to the enhancement of intergrain connections. Single filament Bi-2223 tapes with the critical current of I_c-90 A were fabricated with the optimized sintering process. | 白利锋 张胜楠 LI Chengshan HAO Qingbin LIU Guoqing ZHANG Pingxiang | 2017 | Journal of Wuhan University of Technology(Materials Science)2017，32，4： | 1 |
| 11 | Strain influence on Jc behavior of Nb3 Sn multifilamentary strands fabricated by internal tin process for ITER显示文摘 | ZHANG Pingxiang LIANG Ming TANG Xiande | 2008 | Physica:C2008，468，1520： | 1 |
| 12 | Phase evolution mechanism study and fabrication of PbMo_(6)S_(8) superconducting materials with two-step sintering process显示文摘PbMo6S 8 superconducting materials are considered to have great potential for practical applications at low temperatures and high fields due to their high upper critical field,low anisotropy,and low preparation cost.In this work,PbMo_(6)S_(8) bulks were prepared through a solid‐state sintering process using PbS,Mo,and MoS_(2) as raw materials.The phase evolution mechanism during the sintering of PbMo_(6)S_(8) was studied in detail.It was found that during sintering at 750℃ for 24 h,both the S and Pb atoms diffuse into the Mo and MoS_(2) particles,leading to the formation of the PbMo_(6)S_(8) phase.After sintering at 950℃ for 72 h,a high superconducting phase content was obtained in the bulk;however,numerous pores remained.Therefore,in order to obtain a higher density for the bulk,a two‐step sintering process was developed.Based on this technique,PbMo_(6)S_(8) bulks with a higher bulk density and a higher superconducting phase content were obtained.This study provides an effective method for the fabrication of high‐quality precursor powders,which can be the foundation for the future fabrication of PbMo_(6)S_(8) superconducting long wires or tapes for practical applications. | Botao Shao Lingfeng Ling Shengnan Zhang Jixing Liu Lei Zhi Jianqing Feng Chengshan Li Jianfeng Li Pingxiang Zhang | 2023 | Superconductivity2023，，1： | 0 |
| 13 | High critical current density in powder-in-tube processed MgB_2/Ta/Cu wire显示文摘The magnetization of dense MgB2/Ta/Cu wires prepared by the powder-in-tube method is measured by a SQUID magnetometer. The results indicate that the critical temperature of MgB2/Ta/Cu is around 38.4 K with a sharp transition width of 0.6 K. The MgB2/Ta/Cu wire shows a strong flux pinning and the critical current density is higher than 105 A/cm2 (5 K, self-field) and 104 A/cm2 (20 K, 1 T). Also, the irreversibility field of the sample reaches 6.6 T at 5 K. | FENG Yong, ZHAO Yong, A. K. Dradhan, ZHOU Lian, LIU Xianghong, Jl Ping, ZHANG Pingxiang & SUN Yuping Northwest Institute for Nonferrous Metal Research, Xi’an 710016, China School of Science and Engineering, University of New South Wales, Sy | 2002 | Chinese Science Bulletin2002，47，3： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员