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| 1 | Differential geometric modeling of guidance problem for interceptors显示文摘It is a comparatively convenient technique to investigate the motion of a particle with the help of the differential geometry the-ory,rather than directly decomposing the motion in the Cartesian coordinates.The new model of three-dimensional (3D) guidance problem for interceptors is presented in this paper,based on the classical differential geometry curve theory.Firstly,the kinematical equations of the line of sight (LOS) are gained by carefully investigating the rotation principle of LOS,the kinematic equations of LOS are established,and the concepts of curvature and torsion of LOS are proposed.Simultaneously,the new relative dynamic equations between interceptor and target are constructed.Secondly,it is found that there is an instan-taneous rotation plane of LOS (IRPL) in the space,in which two-dimensional (2D) guidance laws could be constructed to solve 3D interception guidance problems.The spatial 3D true proportional navigation (TPN) guidance law could be directly introduced in IRPL without approximation and linearization for dimension-reduced 2D TPN.In addition,the new series of augmented TPN (APN) and LOS angular acceleration guidance laws (AAG) could also be gained in IRPL.After that,the dif-ferential geometric guidance commands (DGGC) of guidance laws in IRPL are advanced,and we prove that the guidance commands in arc-length system proposed by Chiou and Kuo are just a special case of DGGC.Moreover,the performance of the original guidance laws will be reduced after the differential geometric transformation.At last,an exoatmospheric intercep-tion is taken for simulation to demonstrate the differential geometric modeling proposed in this paper. | LI KeBot CHEN Lei BAI XianZong | 2011 | Science China(Technological Sciences)2011，54，9： | 30 |
| 2 | Glioma-initiating cells: A predominant role in microglia/macrophages tropism to glioma显示文摘 | Liang Yi Hualiang Xiao Minhui Xu Xianzong Ye Jun Hu Fei Li Mei Li Chunxia Luo Shicang Yu Xiuwu Bian Hua Feng | 2010 | Journal of Neuroimmunology2010，，1： | 1 |
| 3 | Factor analysis of interceptor capture probability显示文摘The capture probability of interceptors has been deeply studied.Firstly,the definition of capture probability is analyzed.It is transformed into calculating the probability that the relative position vector between the target and the interceptor locates in a certain cone.The relative position vector and associated covariance matrix are projected in line-of-sight coordinates,and the 3-dimensional integral of a probability function in a cone is calculated to obtain the capture probability.The integral equation is a complicated expression of probability,and it is simplified to an explicit approximate expression according to some assumptions based on the characteristics of the engineering problems.The approximation precision is analyzed by comparative simulation difference,which indicates that approximate assumptions are reasonable.Utilizing the explicit expression,the characteristics of capture probability are analyzed respectively with the factors,such as the distance between the interceptor and the target,the precision of relative position vector,the maximum capture distance and the maximum field angle of interceptor seeker. | Lei Chen Zhijun Gu Xianzong Bai Kebo Li | 2011 | Journal of Systems Engineering and Electronics2011，22，6： | 1 |
| 4 | Common Hazelnut Production and Its Multiplication in Turkey显示文摘Turkey has been the biggest common hazelnut(Corylus avellana L.) production country in the world. The country is an unquestionable leader in this area. The average area of production is within 500 to 800 thousand ha every year, whereas the second biggest country-Italy-has only about 125 thousand ha every year. The paper gives information about the biggest hazelnut producing countries in the world as well as the world's biggest exporters and importers. It also shows where in Turkey are the main areas of hazelnut production. It also describes the most important cultivars in its production. Moreover, it shows how the bush plant is propagated, grown, managed and fertilized and the nuts are harvested. It also points out two main insects to be the biggest problem nowadays on the Turkish plantations. Finally, it makes comments on the state's subsidization to the production, research and the newest trials with the use of mechanical harvesters on the plantations. | baojun zhao xianzong xia faruk zkutlu faruk akyazi roman holubowicz | 2017 | Agricultural Science & Technology2017，18，12： | 0 |
| 5 | Clinical validation of serum immunosignatures in early diagnosis of Crohn's disease显示文摘Background:The search for biomarkers suitable for early diagnosis of Crohn's disease(CD)is challenging.This study investigated the efficacy of serological markers for the early diagnosis of CD.Methods:This was a retrospective nested cohort study.Indirect immuno-fluorescence and enzyme‐linked immunosorbent assay were used to detect ASCA IgG,ASCA IgA,AYMA IgG,AYCA IgG,FI2Y IgG,p‐ANCA IgG,GAB IgG and PAB IgG in patient serum samples.Results:The positive rates of ASCA IgG,ASCA IgA,AYMA IgG,AYCA IgG,FI2Y IgG,p‐ANCA IgG,GAB IgG and PAB IgG in patients with early CD,advanced CD and other intestinal diseases were 37.0%versus 56.8%versus 27.8%;3.7%versus 20.5%versus 19.4%;14.8%versus 2.3%versus 2.8%;25.9%versus 9.1%versus 8.3%;18.5%versus 15.9%versus 8.3%;0.0%versus 2.8%,18.5%;13.6%versus 18.2%versus 16.7%;and 7.4%versus 20.5%versus 0.0%,respectively.The positive rates of ASCA IgG,AYCA IgG and PAB IgG were significantly different among the three groups(p<0.05).In 85.2%of early CD patients,at least one antibody was detected 1 year before diagnosis.The sensitivity of the ASCA/AYMA/AYCA/FI2Y/GAB combination for early diagnosis was 85.2%.The sensitivity of the ASCA/AYMA/AYCA/FI2Y/GAB/PAB/PANCA combination for differentiating CD from other diseases was 87.3%.Conclusions:ASCA IgG and AYCA IgG have potential value in identifying the course of CD.AYCA IgG may be a potential marker for the early diagnosis of CD,and ASCA IgG indicates an advanced stage.The combination of ASCA,AYMA,AYCA,FI2Y,and GAB improves early diagnostic accuracy of CD. | Xianzong Ma Wenyu Zhang Xin Wang Lang Yang Juan Jiao Yan Jia Dezhi Wang Junfeng Xu Peng Jin Mingjie Zhang Shirong Li Yuanming Pan Jianqiu Sheng | 2023 | iLABMED2023，1，3： | 0 |
| 6 | SF_(6) decomposition behaviour under partial discharge of typical insulation defects in gas-solid insulated valve-side bushing of converter transformer显示文摘In this paper we investigated SF_(6) decomposition behaviour of typical insulation defects in gas-solid insulated converter transformer valve-side bushing under partial discharge(PD).Additionally,we compared the results with that of gas insulated switchgear(GIS).The results indicated that SF_(6) decomposition behaviour varies with the insulation defects type.For metal protrusion defects,the proportion ranking of CO_(2) and SO_(2) can be related to whether the needle tip is wrapped with epoxy resin-impregnated paper(ERIP).The proportion of carbon-containing products is much higher under contamination defect than under other defects.Moreover,the proportion of carbon-containing components is higher under flashover condition than under PD condition and is accompanied by the appearance of H2S and CS_(2).However,the yield of SO_(2)F_(2) is always low.Compared to negative DC voltages,positive DC voltages have a higher proportion of carboncontaining components,mainly in the form of more CO_(2) and less SOF_(2).Compared to the PD decomposition behaviour of typical insulation defects in GIS,when PD involves ERIP,the proportion of carbon-containing products,especially CO_(2),is significant higher,while the proportion of sulphur containing products,especially SO_(2)F_(2),is lower. | Hongtu Cheng Fuping Zeng Bowen Tang Haotian Li Ju Tang Zujian Huang Xianzong Chao | 2023 | High Voltage2023，8，4： | 0 |
| 7 | Sugar and Fodder Beet Industry and Business in Poland显示文摘A general situation of the sugar beet industry and business in the European Union(EU) has been presented. It included the quotas of sugar production there, its prices and changes on the market. The latest sugar production data in the world was also given. The main companies carrying out activities on the Polish sugar and sugar beet seeds were also presented.New circumstances after liberating the sugar market in the EU in October, 2017, were also presented. Nowadays, Poland has been a great potential country for further technological progress in agricultural holdings and growing performance in sugar processing and production industry. As food export from Poland increases, it will be followed by increasing use of sugar. Examples are given to improve sugar beet productivity. | Xianzong XIA Bernard SLOMA Hao SUN Roman HOLUBOWICZ | 2017 | Agricultural Science & Technology2017，18，10： | 0 |
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