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| 1 | Dynamics of surface motion on a rotating massive homogeneous body显示文摘It is of great interest to study the dynamical environment on the surface of non-spherical small bodies, especially for asteroids. This paper takes a simple case of a cube for instance, investigates the dynamics of a particle on the surface of a rotating homogeneous cube, and derives fruitful results. Due to the symmetrical characteristic of the cube, the analysis includes motions on two different types of surfaces. For each surface, both the frictionless and friction cases are considered. (i) Without consideration of friction, the surface equilibria in both of the different surfaces are examined and periodic orbits are derived. The analysis of equilibria and periodic orbits could assist understanding the skeleton of motions on the surface of asteroids. (ii) For the friction cases, the conditions that the particle does not escape from the surface are examined. Due to the effect of the friction, there exist the equilibrium regions on the surface where the particle stays at rest, and the locations of them are found. Finally, the dust collection regions are predicted. Future work will extend to real asteroid shapes. | LIU XiaoDong BAOYIN HeXi MA XingRui | 2013 | Science China(Physics,Mechanics & Astronomy)2013，56，4： | 5 |
| 2 | Serum semaphorin 4C as a diagnostic biomarker in breast cancer:A multicenter retrospective study显示文摘Background:To date,there is no approved blood-based biomarker for breast cancer detection.Herein,we aimed to assess semaphorin 4C(SEMA4C),a pivotal protein involved in breast cancer progression,as a serum diagnostic biomarker.Methods:We included 6,213 consecutive inpatients from Tongji Hospital,Qilu Hospital,and Hubei Cancer Hospital.Training cohort and two validation cohorts were introduced for diagnostic exploration and validation.A pan-cancer cohort was used to independently explore the diagnostic potential of SEMA4C among solid tumors.Breast cancer patients who underwent mass excision prior to modified radical mastectomy were also analyzed.We hypothesized that increased pretreatment serum SEMA4C levels,measured using optimized in-house enzymelinked immunosorbent assay kits,could detect breast cancer.The endpoints were diagnostic performance,including area under the receiver operating characteristic curve(AUC),sensitivity,and specificity.Post-surgery pathological diagnosis was the reference standard and breast cancer staging followed the TNM classification.There was no restriction on disease stage for eligibilities.Results:We included 2667 inpatients with breast lesions,2378 patients with other solid tumors,and 1168 healthy participants.Specifically,118 patients with breast cancer were diagnosed with stage 0(5.71%),620 with stage I(30.00%),966 with stage II(46.73%),217 with stage III(10.50%),and 8 with stage IV(0.39%).Patients with breast cancer had significantly higher serum SEMA4C levels than benign breast tumor patients and normal controls(P<0.001).Elevated serum SEMA4C levels had AUC of 0.920(95%confidence interval[CI]:0.900–0.941)and 0.932(95%CI:0.911–0.953)for breast cancer detection in the two validation cohorts.The AUCs for detecting early-stage breast cancer(n=366)and ductal carcinoma in situ(n=85)were 0.931(95%CI:0.916–0.946)and 0.879(95%CI:0.832–0.925),respectively.Serum SEMA4C levels significantly decreased after surgery,and the reduction was more striking after modified radical mastectomy,compared with mass excision(P<0.001).The positive rate of enhanced serum SEMA4C levels was 84.77%for breast cancer and below 20.75%for the other 14 solid tumors.Conclusions:Serum SEMA4C demonstrated promising potential as a candidate biomarker for breast cancer diagnosis.However,validation in prospective settings and by other study groups is warranted. | Ya Wang Long Qiao Jie Yang Xiong Li Yaqi Duan Jiahao Liu Shaoqi Chen Huayi Li Dan Liu Tian Fang Jingjing Ma Xiaoting Li Fei Ye Junxiang Wan Juncheng Wei Qin Xu Ensong Guo Ping Jin Mingfu Wu Lin Zhang Yun Xia Yaqun Wu Jun Shao Yaojun Feng Qing Zhang Zongyuan Yang Gang Chen Qinghua Zhang Xingrui Li Shixuan Wang Junbo Hu Xiaoyun Wang Mona P.Tan Kazuaki Takabe Beihua Kong Qifeng Yang Ding Ma Qinglei Gao | 2021 | Cancer Communications2021，41，12： | 3 |
| 3 | Neuro-Optimal Guidance Control for Lunar Soft Landing显示文摘Returning to moon has become a top topic recently. Many studies have shown that soft landing is a challenging problem in lunar exploration. The lunar soft landing in this paper beginsfrom a 100km circular lunar parking orbit. Once the landing area has been selected and it is time to deorbit for landing, a burn of 19.4m/s is performed to establish a 100× 15km elliptical orbit. At perilune, the landing jets are ignited, and a propulsive landing is performed. A guidanceand control scheme for lunar soft landing is proposed in the paper, which combines optimal theory with nonlinear neuro-control. Basically, an optimal nonlinear control law based on artificial neural network is presented, on the basis of the optimum trajectory from perilune to lunar surface in terms of Pontryagin’s maximum principle according to the terminal boundary conditions and performanceindex. Therefore some optimal control laws can be carried out in the soft landing system due to thenonlinear mapping function of the neural network. The feasibility and validity of the control laws are verified in a simulation experiment. | Wang, Dayi Li, Tieshou Yan, Hui Ma, Xingrui | 1999 | Journal of Systems Engineering and Electronics1999，10，3： | 3 |
| 4 | Design of House Keeping System for a Certain Micro Satellite显示文摘This paper presents the design of hardware and software of the house keeping system for a certain micro satellite. The system uses micro electronic technique, large scale integrated circuits, processors and computers which has the advantages of strong function, high flexibility and reliability, It satisfies the requirements for efficient performance,light weight, small volume,and low consumption of power for micro satellite. | 马秀娟 Cao Xibin Xu Guodong Ma Xingrui | 2001 | High Technology Letters2001，7，4： | 1 |
| 5 | Refined dynamic theory of thick plates in extension-bending and its new formulism 显示文摘 | Hu Chao Ma Fai Ma Xingrui Huang Wenhu | 2012 | Science China series G Physics Mechanics Astronomy2012，42，5： | 1 |
| 6 | DYNAMIC STRESS CONCENTRATIONS IN AMBARTSUMIAN'S PLATE WITH A CUTOUT显示文摘Based on the motion equations of flexural wave in Ambartsumian’ s plates including theeffects of transverse shear deformations,by using perturbation method of small parameter,the scatter-ing of flexural waves and dynamic stress concentrations in the plate with a cutout have been studied.The asypmtotic solution of the dynamic stress problem is obtained.Numerical results for the dynamicstress concentration factor in Ambartsumian’s plates with a circular cutout are graphically presentedand discussed. | Hu Chao Zhao Xinghua (Institute of Applied Mathematics and Mechanics,Shanghai University,Shanghai 200072,China)Ma Xingrui Huang Wenhu (Harbin Institute of Technology,Harbin 150001,China) | 1998 | Acta Mechanica Solida Sinica1998，11，4： | 1 |
| 7 | Synchron-ous Hopf bifurcation and damping osmosis phenomena of a liquid-spacecraft nonlinear coupling system显示文摘 | Gou Xingyu Ma Xingrui Wang Benli | 2001 | AIAA Journal2001，39，2： | 1 |
| 8 | Synchronous hopf bifurcation and damping osmosis phenomena of a liquid-spacecraft nonlinear coupling system显示文摘 | Gou Xingyu Ma Xingrui Wang Benli | 2001 | AIAA Journal2001，39，2： | 1 |
| 9 | Synchronous Hopf bifurcation and damping osmosis phenomena of a liquid-spacecraft nonlinear coupling system显示文摘 | Gou Xingyu Ma Xingrui Wang Benli Litieshou Huang Huaide | 2001 | AIAA Journal2001，39，2： | 1 |
| 10 | Developing Space Manufacturing Industry To Serve National Economy And Promote Social Progress显示文摘Over the past 50 or more years, China's space industry has made brilliant achievements typically represented by the three milestones in China's space development history,i.e.launching the first man-made satellite into space in 1970,realizing the manned spaceflight for the first time in 2003 and sending the first lunar probe to the moon in 2007.At the same time, China's space industry has also mastered a great number of core technologies based upon its own intellectual property rights,accumulated rich experiences | Ma Xingrui | 2008 | Aerospace China2008，9，2： | 0 |
| 11 | INVESTIGATION ON THE SCATTERINGOF ELASTIC WAVES (P OR SV) BY A PLANEINTERFACE CRACK IN LAYERED MEDIA显示文摘In this paper, the scattering of elastic waves by a plane interface crack in Layered media is investigated. By Fourier integral transform, the method of transfer matrix is extended to the scattering of elastic waves by a plane interface crack in layered media, and the problems are reduced to a set of dual integral equations in matrix form. As an example, the far field modes of scattering of elastic waves by a plane interface crack in a layered half space have been presented. Amplitudes in far field modes are plotted versus incident wave frequency for several groups of different material combinations, and the numerical results show that resonance peaks occur at some frequencies. The frequencies at which the resonanse peaks occur for P and SV waves are almost the same. | Ma Xingrui, Zou Zhenzhu, Shao Chengxun and Huang WenhuHarbin Institute of Technology, P.R.China | 1990 | Chinese Journal of Aeronautics1990，5，2： | 0 |
| 12 | Confined space synthesis of Ni(OH)_(2)-impregnated three-dimensional ordered mesoporous carbon as a high-performance supercapacitor electrode显示文摘Regulable loading of Ni(OH)_(2) crystals by using three dimensionally ordered mesoporous carbon(3DOMC)as a support is achieved through a confined growth strategy accompanied by steam-assisted crystallization.Dual forms of high-crystalline nanosheet-like Ni(OH)_(2) severally distribute within mesopores or over the outer surface of 3DOMC particles depending on the loading amount(3%^(−1)5%)of Ni(OH)_(2).Benefitted from the highly hybrid combination and efficient electrolyte diffusion,the obtained Ni(OH)_(2)/carbon nanocomposites exhibit an excellent electrochemical performance,and the optimal sample of 6%_Ni(OH)_(2)/3DOMC with confined extrasmall Ni(OH)_(2) nanosheets as dominant shows the highest specific capacitance of 552.5F.g^(−1) at 1.0A⋅g^(−1),which is 330%higher than the contrast sample by using actived carbon as the support.Furthermore,the assembled hybrid supercapacitor by using 6%_Ni(OH)_(2)/3DOMC and 3DOMC as positive and negative electrodes displays an energy density of 11.7 Wh.kg^(−1) at 288.1 W.kg^(−1) and a superior charge/discharge stability.It is expected that the flexible component,well-defined structure,and superior electrochemical performance could promote a great application potential of Ni(OH)_(2)/3DOMC nanocomposites as supercapacitor electrodes and in other energy storage devices. | Huiyong Chen Xin Yang Wencheng Yang Siyu Zhang Xingrui Wang Baoyu Liu Chengyi Dai Jianbo Zhang Xiaoxun Ma | 2022 | Carbon Resources Conversion2022，5，2： | 0 |
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