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| 1 | Over-expression of CXCR4 on mesenchymal stem cells augments myoangiogenesis in the infarcted myocardium 显示文摘 | Zhang Dongsheng Fan Guochang Zhou Xiaoyang | 2008 | Mol Cell Cardio2008，44，2： | 1 |
| 2 | Overexpression of histidine-rich Ca-binding protein protects against ischemia/reperfusion-induced cardiac injury显示文摘 | ZHOU Xiaoyang FAN Guochang REN Xiaoping | 2007 | Cardiovasc Res2007，75，3： | 1 |
| 3 | The Quality Assessment of Non-Integer-Hour Data in GPS Broadcast Ephemerides and Its Impact on the Accuracy of Real- Time Kinematic Positioning Over the South China Sea显示文摘Abnormal effects in GPS broadcast ephemerides can have a significant effect on real-time navigation and positioning solutions that use the orbit and clock error data provided by GPS broadcast ephemerides.This paper describes three types of non-integerhour navigation data in GPS broadcast ephemeris data.Compared with GPST integer hour data,we find that there are two types of data blocks for non-integer-hour navigation containing gross errors with different levels of precision,which is reflected in the user range accuracy(URA)of the broadcast ephemeris.These gross errors can cause large deviations when using the GPS broadcast ephemeris for orbit calculation and lead to a decrease in the kinematic positioning accuracy.An improved weighting method which is based on the consistency relationship between the URA value and the orbital precision is proposed to improve the positioning accuracy by controlling the effect of gross errors in the broadcast ephemerides.The correction algorithm proposed in this paper was applied to real-time kinematic positioning with shipborne GPS data over the South China Sea.The results showed that the proposed positioning algorithm can effectively reduce the effects of gross errors in the broadcast ephemeris,and significantly improve the accuracy of the navigation and positioning. | Zhangzhen Sun Tianhe Xu Fan Gao Chunhua Jiang Guochang Xu | 2019 | Computer Modeling in Engineering & Sciences2019，，5： | 1 |
| 4 | Supporting Seeder and Planting Technology for Spring Corn in Arid Areas显示文摘The annual rainfall is low and the fresh water resources are scarce for the rainfed farming in dry zone of northern China,which seriously affects the sowing and growth of spring corn. In order to solve this problem,the technology of ridge-mulching and side-sowing of spring corn is put forward,the supporting compound operation seeder is developed,and the effect of different speed on the quality of sowing is tested and analyzed. Under the test conditions described in this paper,the seeding operation with a high speed( up to 6 km/h) can be realized,and the quality of the seeding operation can meet the requirements of the national standards. The application of this machine can solve the problem of ' drought damage at the booting stage' for spring corn,thereby realizing the deep fusion of farming machine and agronomy in dry farming of northern China,and achieving the integration of farming machine and agronomy. | Xiuping ZHANG Lin CHEN Guochang FAN Xudong YAN Xingmao YUAN Yazhen ZHANG Yu XIAO Zile HAN | 2018 | Asian Agricultural Research2018，10，4： | 0 |
| 5 | Effect of graphene modified semi-conductive shielding layer on space charge accumulation in insulation layer for high-voltage direct current cable显示文摘Space charge accumulation in the insulation layer of high-voltage direct current(HVDC)cable is one of the key factors restricting the development of HVDC cable.The inner semi-conductive layer as an important structure of cable will affect the charge accumu-lation characteristics in the insulation layer.This work intends to explore the method of modifying the semi-conductive layer with graphene,to suppress charge accumulation in the insulation layer.First,the semi-conductive layer with different contents of Graphene(G)and carbon black(CB)are prepared.Second,the morphology and surface roughness of the cross section are analysed.Further,the effects of the semi-conductive layer on space charge accumulation of the insulation layer are studied by pulsed electro-acoustic method and thermal stimulation depolarisation current method.The experimental re-sults show that a moderate amount of graphene replacing CB can effectively reduce charge accumulation in the insulation layer and inhibit positive temperature coefficient(PTC)effect at the same time.The surface roughness of specimens decreases with the increase of G content from 0 to 3 phr(parts per hundreds of resin),when the CB content decreases from 25 to 10 phr,the surface roughness of specimen increases.The resistivity test shows that doping G can significantly inhibit the PTC effect of the semi-conductive layer.The volume resistivity of the semi-conductive layer decreases with the increase of G content and CB content.In addition,charge accumulation of the insulation layer rises and then drops under the action of the semi-conductive layer. | Guochang Li Xuejing Li Fan Zhang Xiaojian Liang Mingyue Liu Yanhui Wei Shengtao Li Chuncheng Hao Qingquan Lei | 2022 | High Voltage2022，7，3： | 0 |
| 6 | Establishment of Chlamydomonas reinhardtii chloroplast expression显示文摘An expression vector pACⅢ containing the chimeric gene HAV- VP3P1 and HCV-C gene has been constructed and transferred to C. reinhardtii by the biolistic method. The trans-formants have been identified by PCR, Southern-blotting, Northern-blotting and Western-blotting assays after selecting on resistant medium and incubating in the dark. The results | Guochang Fan Ning Su Zhonglin Zhang Xiangfu Wu Guifang Shen | 1999 | Chinese Science Bulletin1999，44，18： | 0 |
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