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| 1 | A new method for determination of satellite orbits by transfer显示文摘The original idea of a new method for determination of satellite orbits by transfer is from Two-Way Satellite Time and Frequency Transfer (TWSTFT). The original method is called 'determination of satellite orbit by transfer'. The method is not only for determination of satellite orbit but also for the time transfer with high accuracy and precision. The advantage is that the accuracy and the precision for determination of satellite orbit are very high and the new method is favorable for various applications. The combination of various signals disseminated and received forms various modes of satellite orbit determinations. If receivers at stations receive the own station-disseminated signals via a satellite transponder, it forms an orbit determination mode called 'receiving the own station-disseminated signals mode'. If receivers at all stations receive the signals disseminated from the master station via satellite transponders, it forms an orbit determination mode called 'receiving the master station-disseminated signals mode'. If all of receivers at stations receive all stations-disseminated signals via satellite transponders, it forms an orbit determination mode called 'receiving all stations-disseminated signals mode'. Also there are other combinations of signals for satellite orbit determination. For dif- ferent orbit determination modes with different signal combinations, their rigorous formulae of proc- essing are hereby presented in this paper. The accurate and the precise satellite orbit determination for both of the modes, 'receiving the own station-disseminated signals mode' and 'receiving the master station-disseminated signals mode' is attempted. It shows that the accuracy and precision for both of modes are nearly the same, the ranging accuracy is better than 1 cm, and the observation residuals of satellite orbit determination are better than 9 cm in the observation duration of 1 day. | LI ZhiGang YANG XuHai AI GuoXiang SI HuLi QIAO RongChuan FENG ChuGang | 2009 | Science China(Physics,Mechanics & Astronomy)2009，52，3： | 17 |
| 2 | Methods of rapid orbit forecasting after maneuvers for geostationary satellites显示文摘A geostationary(GEO) satellite may serve as a navigation satellite,but there is a problem that maneuvers frequently occur and the forces are difficult to model.Based on the technique of determining satellite orbits by transfer,a predicted orbit with high accuracy may be achieved by the method of statis-tical orbit determination in case of no maneuver force.The predicted orbit will soon be invalid after the maneuver starts,and it takes a long time to get a valid orbit after the maneuver ends.In order to improve ephemeris usability,the method of rapid orbit forecasting after maneuvers is studied.First,GEO satellite movement is analyzed in case of maneuvers based on the observation from the orbit meas-urement system by transfer.Then when a GEO satellite is in the free status just after maneuvers,the short arc observation is used to forecast the orbit.It is assumed that the common system bias and biases of each station are constant,which can be obtained from orbit determination with long arc observations.In this way,only 6 orbit elements would be solved by the method of statistical orbit determination,and the ephemeris with high accuracy may be soon obtained.Actual orbit forecasting with short arc observation for SINOSAT-1 satellite shows that,with the tracking network available,the precision of the predicted orbit(RMS of O-C) can reach about 5 m with 15 min arc observation,and about 3 m with 30 min arc observation. | YANG XuHai LI ZhiGang FENG ChuGang GUO Ji SHI HuLi AI GuoXiang WU FengLei QIAO RongChuan | 2009 | Science China(Physics,Mechanics & Astronomy)2009，52，3： | 10 |
| 3 | Optical absorption and photoluminescence of unhydrogenated amorphous carbon films 显示文摘 | Li Qingshan Fang Rongchuan Ma Yurong | 1993 | Thin Solid Films1993，226，1： | 1 |
| 4 | Synthesis of block copolymer from dissimilar vinyl monomer by stable free radical polymerization显示文摘 | Zou Yousi Lin Jian Zhuang Rongchuan Ye Jianliang Dai Lizong Zheng Lansun | | 0，，： | 1 |
| 5 | Characterization of the diamond growth process using optical emission spectros- copy显示文摘 | Jingbiao Cui Rongchuan Fang | 1997 | Journal of Applied Physics1997，81，6： | 1 |
| 6 | Functional interphases with multi-walled carbon nanotubes in glass fibre/epoxy composites 显示文摘 | ZHANG Jie ZHUANG Rongchuan LIU Jianwen | 2010 | Carbon2010，48，8： | 1 |
| 7 | Glass fibers with carbon nanotube networks as multifunctional sensors 显示文摘 | GAO Shanglin ZHUANG Rongchuan ZHANG Jie | 2010 | Advanced Functional Materials2010，20，12： | 1 |
| 8 | Functional interphases with multi-walled carbon nanotubes in glass fibre/epoxy composites显示文摘 | Jie Zhang Rongchuan Zhuang Jianwen Liu Edith M?der Gert Heinrich Shanglin Gao | 2010 | Carbon2010，，8： | 1 |
| 9 | 显示文摘 | Wu Qihong Ma Yurong Fang Rongchuan | 2003 | Appl Phys Lett2003，82，11： | 1 |
| 10 | Functional interphases with muhi-walled carbon nanotubes in glass fibre/epoxy composites 显示文摘 | Jie Zhang Rongchuan Zhuang Jianwen Liu | 2010 | Carbon2010，48，8： | 1 |
| 11 | The deposition of diamond film with high thermal conductivity显示文摘 | Changzhi Gu Zengsun Jin Xianyi Lu Guangtian Zou Jifa Zhang Rongchuan Fang | 1997 | Thin Solid Films1997，，： | 1 |
| 12 | Graphitic carbon nitride nanosheets mitigate cadmium toxicity in Glycine max L.by promoting cadmium retention in root and improving photosynthetic performance显示文摘Cadmium(Cd)pollution poses a serious threat to plant growth and yield.Nanomaterials have shown great application potential for alleviation of Cd toxicity to plants.In this study,we applied graphitic carbon nitride nanosheets(g-C_(3)N_(4)NSs)for alleviation of Cd-toxicity to soybean(Glycine max L.).The g-C_(3)N_(4)NSs supplementation significantly improved plant growth and reduced oxidative damage in the Cd-toxicated soybean seedlings through hydroponic culture.Particularly,the g-C_(3)N_(4)NSs dynamically regulated the root cell wall(RCW)components by increasing pectin content and modifying its demethylation via enhancing pectin methylesterase(PME)activity,therefore greatly enhanced stronger RCW-Cd retention(up to 82.8%)and reduced Cd migration to the shoot.Additionally,the g-C_(3)N_(4)NSs reversed the Cd-induced chlorosis,increased photosynthetic efficiency because of enhancement in F_v/F_mration,Y(Ⅱ)and sugars content.These results provide new insights into the alleviation of Cd toxicity to plants by g-C_(3)N_(4)NSs,and shed light on the application of low-cost and environmental-friendly carbon-based NMs for alleviating heavy metal toxicity to plants. | Kai Xu Yunyu Guo Chenghua Xing Ronglong Fu Bin Zou Rongchuan Liu Luyi Cai Jianfang Yan Xi-Lin Wu Miaozhen Cai | 2024 | Journal of Environmental Sciences2024，，5： | 0 |
| 13 | Phosphorothioate oligonucleotide inhibits tissue factor expression in endothelial cells induced by blood flow shear stress in rats显示文摘Objective:To determine the effect of antiparallel phosphorothioate triplex-forming oligonucleotide(apsTFO),which was designed according to shear stress response element(SSRE) in tissue factor(TF) gene promoter region,on the expression of endothelial TF in carotid artery stenosis rats.Methods:Rat model of severe carotid artery stenosis were inflicted by silica gel tube ligation.Half an hour before the model infliction,GT20-apsTFO,GT20-psTFO and GT21-apsTFO labeled with green fluorescence(FITC) were injected into the vena caudalis of rat at a dose of 0.5 mg/kg.Half an hour,4 or 9 h after the ligation,the distribution of TFO in the common carotid artery,the liver and the kidney was detected with aid of fluorescence microscopy.And the mRNA and protein expressions of TF,Egr-1 and Sp1 in the above-mentioned organs were determined with in situ hybridization and immunohistochemical assay respectively in 6 h after the model establishment,and the results were analyzed with an image analysis system.Results:Only in 1 h after TFO injection,fluorescent granules appeared in the liver,the kidney and the vascular wall and lumen of carotid artery,and then in 4.5 h,they still deposited in above sites except the vascular lumen.GT20-apsTFO and GT21-apsTFO significant down-regulated the mRNA and protein expressions of TF compared to the rats without treatment(P<0.05),and the former apsTFO had a more stronger effect than the later(P<0.05).GT20-psTFO had no such effect(P>0.05).The 3 TFOs had no inhibition on the mRNA and protein expressions of Egr-1 and Sp1.Conclusion:Pretreated apsTFO can partly come into the vascular endothelial cells,and inhibit TF expression induced by shear stress,but had no effect on Egr-1 and Sp1 gene expressions. | Li Qianning Yang Yimin Ying Dajun Cheng Rongchuan Gong Zili Liu Yong Zhou Zhujuan Zheng Jian | 2008 | Journal of Medical Colleges of PLA(China)2008，23，3： | 0 |
| 14 | Precise Positions of Triton in 2010–2014 based on Gaia-DR2显示文摘With unique orbital and physical characteristics,Triton is a very important target because it may contain information of the origin and evolution of the solar system.Besides space explorations,ground-based observations over long time also play a key role on research of Triton.High-precision positions of Triton obtained from ground telescopes are of great significance for studying its orbital evolution and the physical properties of Neptune.As a long-term observational target,Triton has been observed by the 1.56 m telescope of Shanghai Astronomical Observatory since 1996.In this paper,based on our AAPPDI software and with Gaia DR2 as the reference catalog,604 positions of Triton during 2010–2014 are calculated,with standard errors of 19–88 mas.A comparison between our results and the ephemeris(DE431+nep096)is also given. | Huiyan Zhang Yong Yu Dan Yan Kai Tang Rongchuan Qiao | 2022 | Research in Astronomy and Astrophysics2022，22，3： | 0 |
| 15 | Excitation Intensity Dependence of Photolumiuescence in a-C:H and a-C Films显示文摘We present the novel results of excitation intensity dependent photoluminescence(PL)in a-C:H and a-C thin films.Sublinear and superlinear phenomena of PL have been observed for a-C:H films.There are two PL bands in a-C films under lower excitation intensity.These results are qualitatively explained in the light of band tail state saturation and the contribution of gap states. | LI Qingshan GUO Hua MA Yurong FANG Rongchuan XU Cunyi | 1991 | Chinese Physics Letters1991，8，1： | 0 |
| 16 | Morphological Correlates of the Phonatory Organ in an Ultrasonically Phonating Frog显示文摘The concave-eared torrent frog(Odorrana tormota) is the first species of tailless amphibian that was evidenced to phonate and detect ultrasounds. We employed anatomic and histological methods to examine the phonatory organs, including the floor of the buccal cavity, vocal cords and glottis, of O. tormota and its sympatric species including O. graminea, O. schmackeri, and Amolops wuyiensis with different fundamental frequencies, and Pelophylax nigromaculatus as a control. Our results reveal that O. tormota possesses specialized phonatory organ structures, with thinner vocal cords modulated by a moderately stronger muscular mastoideus between the medial vocal cords and the lateral cricoid cartilages, and more elastic mouth floor to likely supply faster air stream which could make the vocal cords vibrate at higher frequencies, larger relative distance between the two muscles m. intermandibulares(RDMI), and higher nucleus density of m. intermandibularis(NDMI) and m. geniohyoideus(NDMG). The results of Pearson's correlation tests between the mean values of the above measurements and the fundamental frequencies from the five species imply that all the specialized phonatory organ structures mentioned above might be favored by higher frequency of phonation of O. tormota. | Rongchuan XIONG Bin WANG Yuhan WU Jianping JIANG | 2012 | Asian Herpetological Research2012，3，3： | 0 |
| 17 | Learning a Deep Metric:A Lightweight Relation Network for Loop Closure in Complex Industrial Scenarios显示文摘The similarity metric in Loop closure detection(LCD)is still considered in an old fashioned way,i.e.to pre-define a fixed distance function,leading to a limited performance.This paper proposes a general framework named LRN-LCD,i.e.a Lightweight relation network for LCD,which combines the feature extraction module and similarity metric module into a simple and lightweight network.The LRN-LCD,an end-to-end framework,can learn a non-linear deep similarity metric to detect loop closures from different scenes.Moreover,the LRN-LCD supports image sequences as input to speed up the similarity metric in real-time applications.Extensive experiments on several open datasets illustrate that LRN-LCD is more robust to strong condition variations and viewpoint variations than the mainstream methods. | JIN Sheng CHEN Liang GAO Yu SHEN Changqing SUN Rongchuan | 2021 | Chinese Journal of Electronics2021，30，1： | 0 |
| 18 | Thermal Diffusivity of Diamond Films With Substrates显示文摘Diamond films were prepared by hot-filament chemical vapour deposition system.Photothermal deflection technique has been used to measure thermal diffusivity of diamond films with substrates.The influence of silicon or quartz substrate on the measurement of thermal diffusivity of film is presented.A simple two-layer model has been given to explain the effect of substrates on the measurement of thermal diffusivity and used to draw thermal diffusivity of diamond film from effective thermal diffusivity of film/substrate system. | CUI Jingbiao FANG Rongchuan | 1995 | Chinese Physics Letters1995，12，8： | 0 |
| 19 | CONTROLLED SEQUENTIAL AND RANDOMRADICAL COPOLYMERIZATION OF STYRENE AND BUTYL METHACRYLATE BY ATOM TRANSFER RADICAL POLYMERIZATION显示文摘Diblock copolymers containing polystyrene (PSt) andpolybutyl methacrylate (PBMA)segnents and random coplymer of styrene (St) and butyl methacrylate (BMA) havebeen prepared by atom transfer radical polymerizanon (ATRP). Diblock copolymers ofBAN and St with predetermined molecular weight (1× 104ed.5 × 104)and narrowermolecular weight distribution(1.25~1.5) were obained The random copolymercompositions were determined by 1HNMR spectroscopy and the reactivity ratios wereevaluated by the extended Kelen-Tudos method to be γst=0.91, γBMA=0.32. | Zou yousi Zhuang Rongchuan Qiu Zhiping Dai Lizong(Department of Material Science, Xiamen University, Xiamen 361005) | 1998 | Chinese Journal of Reactive Polymers1998，7，2： | 0 |
| 20 | Studies on Thermal Conductivity of Diamond Film显示文摘Diamond films were prepared by electron-assisted chemical vapor deposition(EACVD)system,and the thermal difffusivities of the films with or without substrate were studied byuse of phot0thermal deflection(PTD)technique.The results show that less non-diamondcomponent and larger crystalline size result in higher thermal conductivity of CVD diamondfilm.The influence of substrate on the measurement of thermal conductivity of the film wasinvestigated,and a simple two-layer heat conduction model is given to account for the influ-ence and used to draw the thermal conductivity of the film from the efective thermal diffusivi-ty of film/substrate system. | Jingbiao, C. Hong, Ch. Jifa, Zh. Dayan, B. Rongchuan, F. | 1995 | High Technology Letters1995，1，1： | 0 |
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