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| 1 | Elevation estimation for low-angle target based on reffection paths suppression显示文摘In the signal processing for metrewave radar, the reffection paths of target echoes can cause severe error in the elevation estimation for the low-angle target tracking. The exact angles of the reffection paths are unknown beforehand, and therefore, the reffection paths can not be suppressed easily. Therefore, in this article, an improved reffection paths suppression approach is presented. A block matrix aggregate is constructed based on the possible angles of the reffection paths. Combined with the beamforming-like processing, a generalized maximum likelihood estimation is derived to optimize the estimation. Moreover, the noise reduction method based on the Toeplitz covariance matrix is used for better performance. This approach is applied to the real data collected by the low-angle tracking radar with 8-channel vertical array. The experiment results show that the reffection effects are reduced and the accuracy of the elevation estimate is improved. | Hou Yuguan Shen Yiying Zhang Zhongzhao | 2008 | Journal of Systems Engineering and Electronics2008，19，1： | 2 |
| 2 | Reduced protein expression of metastasis‐related genes (nm23, KISS1, KAI1 and p53) in lymph node and liver metastases of gastric cancer显示文摘 | YuGuan‐zhen ChenYing NiCan‐rong WangGuo‐dong QianJian‐xin WangJie‐jun | 2007 | International Journal of Experimental Pathology2007，，3： | 1 |
| 3 | Chemical components and microtopography of (100) surface for orthopyroxene显示文摘XPS and AES depth composition profile studies were carried on to understand chemical components of (100) surfaces for Chengde hypersthene from Hebei Province, China, and Bamble enstatite from Norway. Also, to understand the microtopography of them the AFM observation was carried on. There are obvious differences between chemical components of (100) surface and those of mineral inner. Compared with inner mineral Si4+ proportion in total cations has no distinguished variation, whereas Ca2+ and Al3+ proportions increase respectively, and Mg2+ proportion decreases. AES depth composition profile of 2000s shows that at a depth of 70 nm the atomic concentrations (%) for each element (except Si in Chengde hypersthene) slightly go up and down, but the average values have no obvious change. On the profile, the atomic concentrations (%) of Al and Si for Chengde hypersthene present a compensated relationship. Obviously, the Si and Al must have the relationship of isomorphic replacement on the (100) surface. The image of AFM shows that there is hillock growth on the (100) surface in the layered form of the polygon with 0 to several hundreds nm in thickness. The growth is a sort of secondary phyllosilicate minerals. The observation of the above-mentioned phenomenon and the recognition on the above regularities are benefit for understanding of the mechanism for weathering and water-rock reactions. | XUE Jiyue, PAN Yuguan, LUO Gufeng & LU HaipingDepartment of Earth Sciences, Nanjing University, Nanjing 210093,ChinaCorrespondence should be addressed to Xue Jiyue (e-mail: xuezhou@nju.edu.cn) | 2003 | Chinese Science Bulletin2003，48，9： | 1 |
| 4 | Poisson equation,PoincaréLelong equation and decay on complete K(a)hler manifold显示文摘 | NI Lei SHI Yuguan TAM Luenfai | 2001 | Differential Geometry2001，57，： | 1 |
| 5 | Surficial phase-identiafication and structural profiles from weathered natural pyrites: A grazing -incidence X-ray diffraction study显示文摘 | Cai Yuanfeng Pan Yuguan Xue Jiyue | 2009 | Applied Surface Science2009，255，： | 1 |
| 6 | Poisson equation, PoincareLelong equation and decay on complete Kathle rmanifold 显示文摘 | Ni Lei Shi Yuguan Tam L F | 2001 | J Diff Geom2001，57，： | 1 |
| 7 | Origin of the red colour in a red limestone from the Vispi Quarry section (central Italy): A high-resolution transmission electron microscopy analysis显示文摘 | Yuanfeng Cai Xiaoxiao Hu Xiang Li Yuguan Pan | 2011 | Cretaceous Research2011，，： | 1 |
| 8 | Paleoclimatic approach to the origin of the coloring of Turonian pelagic limestones from the Vispi Quarry section (Cretaceous, central Italy)显示文摘 | Yuanfeng Cai Xiang Li Xiumian Hu Xiaoming Chen Yuguan Pan | 2009 | Cretaceous Research2009，，5： | 1 |
| 9 | Effects of Cerium on Key Enzymes of Carbon Assimilation of Spinach Under Magnesium Deficiency显示文摘 | Ze Yuguan Zhou Min Luo Luyang Ji Zhe Liu Chao Yin Sitao Duan Yanmei Li Na Hong Fashui | 2009 | Biological Trace Element Research2009，，2： | 1 |
| 10 | Cerium Relieves the Inhibition of Nitrogen Metabolism of Spinach Caused by Magnesium Deficiency显示文摘 | Sitao Yin Yuguan Ze Chao Liu Na Li Min Zhou Yanmei Duan Fashui Hong | 2009 | Biological Trace Element Research . 2009 (1-3)2009，，1： | 1 |
| 11 | On Reservations in Respect to the International Covenant on Civil and Political Rights——From the perspective of criminal justice显示文摘It is already 10 years since Chinasigned the International Covenanton Civil and Political Rights(Covenant for short) on | YANG YUGUAN CUI WEI | 2009 | The Journal of Human Rights2009，8，4： | 0 |
| 12 | Super-microstructure evolution caused by polysomatic reaction of Heishan hypersthene associated with fluid显示文摘By means of transmission electron microscopy (TEM), the study on hypersthene megacryst and uralitized hypersthene from anorthosite complex of Chengde, Hebei Province of China shows that the layer silicate minerals such as talc and smectite would grow on the (100) under the con- dition of supergenesis. This kind of silicate is the product of the polysomatic reaction, and their evolution of growth from small to big was observed by TEM. In most cases, the layer silicate nucleus in the form of rhomb block firstly grow out of the interfaces of the augite exsolution lamellae in the hy- persthene matrix. The boundary faces of the rhomb blocks are parallel to {210} of hypersthene. The small blocks could link each other in the form of veins, and further in the form of flakes. It is proposed that the growth of layer silicates is constrained by the nucleation mechanism of polysomatic reaction. The characteristics of the super-microstructure for the uralitized hypersthenes show that the polysomatic reac- tion from pyroxene to amphiboles is caused by the bulk reac- tion mechanism. | XUE Jiyue PAN Yuguan | 2005 | Chinese Science Bulletin2005，50，14： | 0 |
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