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| 1 | Evaluation of CHAMP Satellite Orbit with SLR Measurements显示文摘The technique of Evaluating CHAMP satellite orbit with SLR measurements is presented. As an independent evaluation of the orbit solution, SLR data observed from January 1 to 16, 2002 are processed to compute the residuals after fixing the GFZ’s post science orbits solutions. The SLR residuals are computed as the differences of the SLR measurements minus the corresponding distances between the SLR station and the GPS-derived orbit positions. On the basis of the SLR residuals analysis, it is found that the accuracy of GFZ’s post science orbits is better than 10 cm and that there is no systematic error in GFZ’s post science orbits. | QIN Xianping YANG Yuanxi | 2005 | Geo-Spatial Information Science2005，8，3： | 1 |
| 2 | Feasibility Analysis of Performance Validation for Satellite Altimeters Using Tide Gauge and Deep-ocean Bottom Pressure Recorder显示文摘Independent of traditional approach of satellite altimeter calibration, the feasibility of altimeter validation using tide gauge located on solitary island at open sea (TGSI) and deep-ocean bottom pressure recorder (DBPR) separately is initially studied. Bias of Jason-3 sea surface height (SSH) and relative SSH bias (Δbias) between Jason-2 and Jason-3 is calculated using the data of tide gauge on Harvest oil platform, tide gauge No. 1890000 and DBPR No. 21419. The standard deviations of calculated SSH bias sequence are 3.98 cm, 2.87 cm and 8.61 cm respectively, and Δbias (Jason-3—Jason-2) is -3.62± 2.17 cm , -2.58±1.97 cm and -2.60±1.30 cm respectively. Comparing to the results reported by international calibration sites, the results show that Jason-3 SSH is 3.0 cm lower than that of Jason-2, the selected DBPR is appropriate to the calculation of relative SSH bias between Jason-2 and Jason-3, but it is not suitable for calibration or validation of single satellite, TGSI is appropriate to both. | Bin GUAN Zhongmiao SUN Xiaogang LIU Zhenhe ZHAI Xianping QIN | 2020 | Journal of Geodesy and Geoinformation Science2020，3，1： | 1 |
| 3 | The outcome differences of CT screening for lung cancer pre and post following an algorithm in Zhuhai, China显示文摘 | Xueguo Liu Mingzhu Liang Yong Wang Kai Chen Xiangmeng Chen Peixin Qin Jianxing He Xianping Yi | 2010 | Lung Cancer2010，，2： | 1 |
| 4 | ZnO Films on Transferable and Low Thermal Resistance Graphite Substrate Grown by Ultrasonic Spray Pyrolysis显示文摘ZnO thin films were deposited on graphite substrates by ultrasonic spray pyrolysis method with Zn(CH 3 COO) 2 ·2H 2 O aqueous solution as precursor. The crystalline structure, morphology, and optical properties of the as-grown ZnO films were investigated systematically as a function of deposition temperature and growth time. Near-band edge ultraviolet(UV) emission was observed in room temperature photoluminescence spectra for the optimized samples, yet the usually observed defect related deep level emissions were nearly undetectable, indicating that high optical quality ZnO thin fi lms could be achieved via this ultrasonic spray pyrolysis method. Considering the features of transferable and low thermal resistance of the graphite substrates, the achievement will be of special interest for the development of high-power semiconductor devices with suffi cient power durability. | 边继明 MA Xiaowen SUN Jingchang ZHANG Zhikun WANG Yuxin QIN Fuwen LUO Yingmin ZHANG Yuzhi FU Xianping | 2014 | Journal of Wuhan University of Technology(Materials Science)2014，29，3： | 0 |
| 5 | Synthesis and Characterization of Fine Grained High Density La_2Mo_2O_9-based Oxide-ion Conductors显示文摘A cost-effective technique,including nanocrystalline powder preparation using a modified Pechini method and a two-step low-temperature sintering route,was developed for the synthesis of high performance La_2Mo_2O_9- based oxide-ion conductors.The optimum parameters of the compaction pressure,the first step and the second step sintering temperatures for the synthesis of fine grained,high density and uniform La_2Mo_2O_9- based oxide-ion conductors were determined by a series of sintering experiments.High density and uniform sintered La_2Mo_2O_9 samples with average grain size from 0.8 to 5μm and La_(1.96)K_(0.04)Mo_2O_(8.96) sample with average grain size as small as 500 nm were synthesized by using this cost-effective method.The impedance measurement results show that the as-fabricated La_2Mo_2O_9-based ceramics possess much higher ionic con- ductivity than that obtained by solid state reaction method.It is found that in the range of 0.8-5μm the grain size of dense La_2Mo_2O_9 samples prepared from the nanocrystalline powders has little influence on their conductivities. | Jianxin WANG Qin WANG Xianping WANG Chun LI Qianfeng FANG | 2008 | Journal of Materials Science & Technology2008，24，5： | 0 |
| 6 | 肺腺癌实性结节肿瘤间质与多排螺旋CT早期增强间的关系研究(英文)显示文摘Objective: To evaluate correlations between proportion and distribution of tumor stroma and MDCT early phase enhancement character in solid lung adenocarcinoma, and compare with microvessel density and histological subtypes. Methods: Thirty-one patients with lung adenocarcinoma shown as solid solitary pulmonary nodules underwent routine con-trast-enhanced MDCT followed by surgical resections. CT character included net enhancement and distribution of enhance-ment. The largest cut surface of tumor specimens were stained by hematoxylin and eosin. About 25 fields of view of each specimen were scanned as digitized pictures at low magnification. Semi-auto segmentation software was used to calculate mean stroma proportion. Pearson correlation coefficient was used to represent the relationships between extent of tumor en-hancement, proportion of tumor stroma and MVD respectively. Fisher's exact test was used to analyze statistical differences in degree of CT enhancement among groups of different histological subtypes. Results: Proportion of invasive tumor stroma (13.2%-54.5%, mean 26.2 ± 8.8%) was correlated positively with net enhancement (8-60.8 HU, mean 31.2 ± 13.6 HU; r = 0.483, P = 0.006) which was more than MVD. 58.1% cases showed homogenous enhancement, 32.3% cases showed periph-eral inhomogenous enhancement, 3.2% cases showed central inhomogenous enhancement, 3.2% cases showed asymmetri-cal inhomogenous enhancement, and 3.2% cases showed no enhancement. 58.1% cases' stroma showed mixed distribution, 35.5% cases showed peripheral distribution, 3.2% cases showed central distribution, and 3.2% cases showed asymmetrical distribution. Significantly more adenocarcinomas classified with 'net enhancement > 20 HU' were found in the acinar group than in the solid with mucin subtype (P = 0.005). Conclusion: Extent of CT enhancement reflects underlying not only the tumor angiogenesis but also stroma proliferation in solid small lung adenocarcinoma. Tumor stroma proportion could reflect the histopathologic basis of small lung adenocarcinoma's CT enhancement substantially than MVD. Distribution between enhancement and tumor stroma have good correspondence. Most of acinar adenocarcinomas have higher degree of CT net enhancement than solid with mucin adenocarcinomas. | Yong Wang Xueguo Liu Yujing Lin Xianping Yi Lianju Ding Xiaohong Wang Qjngsi Zeng Jianxing He Mingzhu Liang Peixin Qin Guomei Zhong Yanli He Xiaobin Liu | 2007 | The Chinese-German Journal of Clinical Oncology2007，6，5： | 0 |
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