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| 1 | Integrated cooperative guidance framework and cooperative guidance law for multi-missile显示文摘An integrated cooperative guidance framework for multi-missile cooperatively attacking a single stationary target is proposed in this paper by combining both the centralized and decentralized communication topologies. Once missiles are distributed into several groups, missiles within a single group communicate with the centralized leader-follower framework, while the leaders from different groups communicate using the nearest-neighbor topology. To implement the integrated cooperative guidance framework, a group of Finite-Time Cooperative Guidance(FTCG) laws considering the saturation constraint on FOV(FTCG-FOV) are firstly derived within the centralized leader-follower framework to satisfy the communication topology of missiles in a single group.Then, an improved sequential approach is developed to adapt the FTCG-FOV to satisfy the communication topology between groups. The numerical simulations demonstrate the effectiveness and high efficiency of the integrated cooperative guidance framework and the cooperative guidance laws, as well as the superiority of the developed sequential approach. | Jianbo ZHAO Shuxing YANG | 2018 | Chinese Journal of Aeronautics2018，31，3： | 17 |
| 2 | Regulation of extracellular signal-regulated kinase 1/2 influences hippocampal neuronal survival in a rat model of diabetic cerebral ischemia显示文摘Activation of extracellular signal-regulated kinase 1/2 has been demonstrated in acute brain ischemia. We hypothesized that activated extracellular signal-regulated kinase 1/2 can protect hippocampal neurons from injury in a diabetic model after cerebral ischemia/reperfusion. In this study, transient whole-brain ischemia was induced by four-vessel occlusion in normal and diabetic rats, and extracellular signal-regulated kinase 1/2 inhibitor(U0126) was administered into diabetic rats 30 minutes before ischemia as a pretreatment. Results showed that the number of surviving neurons in the hippocampal CA1 region was reduced, extracellular signal-regulated kinase 1/2 phosphorylation and Ku70 activity were decreased, and pro-apoptotic Bax expression was upregulated after intervention using U0126. These findings demonstrate that inhibition of extracellular signal-regulated kinase 1/2 activity aggravated neuronal loss in the hippocampus in a diabetic rat after cerebral ischemia/reperfusion, further decreased DNA repairing ability and accelerated apoptosis in hippocampal neurons. Extracellular signal-regulated kinase 1/2 activation plays a neuroprotective role in hippocampal neurons in a diabetic rat after cerebral ischemia/ reperfusion. | Yaning Zhao Jianmin Li Qiqun Tang Pan Zhang Liwei Jing Changxiang Chen Shuxing Li | 2014 | Neural Regeneration Research2014，9，7： | 10 |
| 3 | Simulation and experimental investigation of inner-jet electrochemical grinding of GH4169 alloy显示文摘GH4169 alloy is one of the most commonly used materials in aero engine turbine blades,but its machinability is poor because of its excellent strength at high temperatures. Electrochemical machining(ECM) has become a common method for machining this alloy and other difficult-tomachine materials. Electrochemical grinding(ECG) is a hybrid process combining ECM and conventional grinding. In this paper, investigations conducted on inner-jet ECG of GH4169 alloy are described. Two types of inner-jet ECG grinding wheels were used to machine a flat bottom surface.The machining process was simulated using COMSOL software, and machining gaps under different machining parameters were obtained. In addition, maximum feed rates and maximum material removal rates under different machining parameters were studied experimentally. The maximum sizes and the uniformity of the distributions of the gaps machined by the two grinding wheels were compared. The effects of different applied voltages on the machining results were also investigated. | Hansong LI Shuxing FU Qingliang ZHANG Shen NIU Ningsong QU | 2018 | Chinese Journal of Aeronautics2018，31，3： | 9 |
| 4 | Coning motion stability of wrap around fin rockets显示文摘Both the asymptotical stability criterion and the bounded stability criterion of the coning motion for wrap around fin(WAF) rockets are proposed through the analy-sis of coning motion equations,which can be easily used to determine the exis-tence of the coning motion during the rocket design. The correctness of the crite-rions is verified by mathematical simulation examples of a WAF rocket with differ-ent setting angles. It is also found that the setting angle of WAF has great effects on the rolling moment and side moment of the rocket. | MAO XueRui YANG ShuXing XU Yong | 2007 | Science China(Technological Sciences)2007，50，3： | 7 |
| 5 | Protective effects of dl-3n-butylphthalide against diffuse brain injury显示文摘Dl-3n-butylphthalide can effectively treat cerebral ischemia;however,the mechanisms underlying the effects of dl-3n-butylphthalide on microcirculation disorders following diffuse brain injury remain unclear.In this study,models of diffuse brain injury were established in Sprague-Dawley rats with the vertical impact method.Dl-3n-butylphthalide at 80 and 160 mg/kg was given via intraperitoneal injection immediately after diffuse brain injury.Ultrastructural changes in the cerebral cortex were observed using electron microscopy.Cerebral blood flow was measured by laser Doppler flowmetry,vascular density was marked by tannic acid-ferric chloride staining,vascular permeability was estimated by the Evans blue method,brain water content was measured using the dry-wet method,and rat behavior was measured by motor function and sensory function tests.At 6,24,48,and 72hours after administration of dl-3n-butylphthalide,reduced cerebral ultrastructure damage,increased vascular density and cerebral blood flow,and improved motor and sensory functions were observed.Our findings demonstrate that dl-3n-butylphthalide may have protective effects against diffuse brain injury by ameliorating microcirculation disorder and reducing blood-brain barrier damage and cerebral edema. | Yaning Zhao Jianmin Li Pan Zhang Changxiang Chen Shuxing Li | 2013 | Neural Regeneration Research2013，8，28： | 7 |
| 6 | Riemann boundary value problems and reflection of shock for the Chaplygin gas显示文摘In this paper,we study two-dimensional Riemann boundary value problems of Euler system for the isentropic and irrotational Chaplygin gas with initial data being two constant states given in two sectors respectively,where one sector is a quadrant and the other one has an acute vertex angle.We prove that the Riemann boundary value problem admits a global self-similar solution,if either the initial states are close,or the smaller sector is also near a quadrant.Our result can be applied to solving the problem of shock reflection by a ramp. | CHEN ShuXing 1,& QU AiFang 2 1 School of Mathematical Sciences,Fudan University,Shanghai 200433,China 2 Wuhan Institute of Physics and Mathematics,Chinese Academy of Sciences,Wuhan 430071,China | 2012 | Science China Mathematics2012，55，4： | 6 |
| 7 | Gene characterization and molecular pathway analysis of reverse thermosensitive genic male sterility in eggplant(Solanum melongena L.)显示文摘The naturally occurring mutant eggplant line 05ms was identified with reverse thermosensitive genic male sterility(rTGMS),but its temperature-responsive fertility mechanisms remain largely unknown.Here,we studied the flower morphology,anther cellular structure,and genome-wide gene expression of this rTGMS line.Candidate genes for thermosensitive male sterility during the microspore development of 05ms and the temperature-insensitive line S63 under low-temperature(LT)and high-temperature(HT)conditions were identified.Under LT,tapetum cells were vacuolated and had delayed disintegration in 05ms.RNA-seq analysis indicated that DEGs were enriched in the KEGG pathways‘plant hormone signal transduction’,‘starch and sucrose metabolism’,and‘phenylpropanoid biosynthesis’.We identified two genes,4CLL1(Sme2.5_00368.1_g00010.1)and CKI1(Sme2.5_10056.1_g00002.1),which could potentially regulate eggplant anther development and may be candidate genes for rTGMS.Finally,we propose a working model of anther abortion for rTGMS in eggplant.CKI1 responds to LT stress and causes expression changes in genes related to anther development,such as 4CLL1,and the cellular structure of the tapetum becomes abnormal,causing male sterility.The findings of this study explain the underlying molecular mechanisms of male sterility in eggplant rTGMS lines. | Bing Li Xueping Chen Yanrong Wu Aixia Gu Jingjing Zhang Shuangxia Luo Xiurui Gao Jianjun Zhao Xiuqing Pan Shuxing Shen | 2019 | Horticulture Research2019，6，1： | 5 |
| 8 | Cooperative guidance of seeker-less missile considering localization error显示文摘To perform an accurate fire-and-forget attack of seeker-less missile with the consideration of the localization error, a new cooperative guidance strategy of multi-missiles is proposed in this work. Firstly, an estimated position of the seeker-less missile is carefully selected, based on which the slant angle of the line between the estimated and real positions of the seeker-less missile is approximately derived inspired by the localization theory of GPS(Global Position System).Then, respectively based on the guidance law considering the impact angle and time constraints, the consensus theory and the finite-time convergence approach, three cooperative guidance laws employing the previously obtained slant angle are derived for intensive attack to address either a stationary or maneuvering target. Simulation results well demonstrate the effectiveness and advantages of the proposed cooperative guidance strategy. | Jianbo ZHAO Shuxing YANG Fenfen XIONG | 2019 | Chinese Journal of Aeronautics2019，32，8： | 4 |
| 9 | Coning motion instability of spinning missiles induced by the delay of strap-down seeker显示文摘The strap-down seeker,which combines the seeker's and the onboard gyro's measurements to obtain the target information,has been extensively applied by spinning missiles.The response delay of the strap-down seeker,a novel factor that could result in crosscoupling between the acceleration commands in the pitch and yaw channels and subsequently cause the significant deterioration in dynamic stability of the spinning missile equipped with a rate loop,is noted in this paper.The sufficient and necessary stability conditions are also analytically established based on the system equation with complex coefficient,which are further verified by numerical simulations.It could be indicated that the response delay of the strap-down seeker will greatly deteriorate the dynamic stability of the whole guidance system designed by the conventional method.It is also noticed from analysis that the stable region of the combined guidance coefficient is shrunken significantly with the increase of the spinning rate. | Xiao HU Shuxing YANG | 2020 | Chinese Journal of Aeronautics2020，33，12： | 4 |
| 10 | Controlling the size of fragrance microcapsules using designed agitator paddles: Experiment and CFD simulation显示文摘Controlling the size of fragranee microcapsules using designed agitator paddles was investigated and studied by CFD simulation. First, different fluid flows were established by varying stirring speeds, reactor scales, and agitator paddle design, and the effects of each on particle size and distribution of prepared microcapsules were determined. The experimental results showed that the pattern design of orifices in the plate paddles control the flow field well. Narrow particle-size distributio ns of the microcapsules were obtained. The fluid flow characteristics including fluid velocity field, turbulent kinetic energy field, and shear stress distribution for thedifferent agitator paddle types in different reaction kettles were simulated using CFD tech no logy. The correlations between simulated data and experime ntal results were an alyzed. Significantly, the simulated average flow velocity was found to show good negative linear correlation w让h the average particle size of prepared microcapsules, with a correlation of y =-2.166x + 42.626. | Hongbin Zhao Xuening Fei Baolian Zhang Shuxing Zhao Guangmin Li Lingyun Cao | 2019 | Particuology2019，17，2： | 4 |
| 11 | The fundamental solution of the Keldysh typeoperator显示文摘In this paper we discuss the fundamental solution of the Keldysh type operator Lαu■ 2u x2 + y 2yu y2 + α u y1 , which is a basic mixed type operator different from the Tricomi operator. The fundamental solution of the Keldysh type operator with α>-1/2 is obtained. It is shown that the fundamental solution for such an operator generally has stronger singularity than that for the Tricomi operator. Particularly, the fundamental solution of the Keldysh type operator with α<1/2 has to be defined by using the finite part of divergent integrals in the theory of distributions. | CHEN ShuXing School of Mathematical Sciences, Fudan University, Shanghai 200433, China | 2009 | Science China Mathematics2009，52，9： | 3 |
| 12 | Comparative transcriptome analysis reveals defense responses against soft rot in Chinese cabbage显示文摘Pectobacterium carotovorum ssp.carotovorum(Pcc)is a necrotrophic bacterial species that causes soft rot disease in Chinese cabbage.In this study,plants harboring the resistant mutant sr gene,which confers resistance against Pcc,were screened from an 800 M2 population mutated by ethyl methane sulfonate(EMS)and scored in vitro and in vivo for lesion size.The transcript profiles showed~512 differentially expressed genes(DEGs)between sr and WT plants occurring between 6 and 12 h postinoculation(hpi),which corresponded to the important defense regulation period(resistance)to Pcc in Chinese cabbage.The downstream defense genes(CPK,CML,RBOH MPK3,and MPK4)of pathogen pattern-triggered immunity(PTI)were strongly activated during infection at 12 hpi in resistant mutant sr;PTI appears to be central to plant defense against Pcc via recognition by three putative pattern recognition receptors(PRRs;BrLYM1-BrCERK1,BrBKK1/SERK4-PEPR1,BrWAKs).Pcc triggered the upregulation of the jasmonic acid(JA)and ethylene(ET)biosynthesis genes in mutant sr,but auxins and other hormones may have affected some negative signals.Endogenous hormones(auxins,JAs,and SA),as well as exogenous auxins(MEJA and BTH),were also verified as functioning in the immune system.Concurrently,the expression of glucosinolate and lignin biosynthesis genes was increased at 12 hpi in resistant mutant sr,and the accumulation of glucosinolate and lignin also indicated that these genes have a functional defensive role against Pcc.Our study provides valuable information and elucidates the resistance mechanism of Chinese cabbage against Pcc infection. | Mengyang Liu Fang Wu Shan Wang Yin Lu Xueping Chen Yanhua Wang Aixia Gu Jianjun Zhao Shuxing Shen | 2019 | Horticulture Research2019，6，1： | 2 |
| 13 | Quantification and assessment of fault uncertainty and risk using stochastic conditional simulations显示文摘The effect of geological uncertainty on the development and mining of underground coal deposits is a key issue for longwall mining, as the presence of faults generates substantial monetary losses. This paper develops a method for the conditional simulation of fault systems and uses the method to quantify and assess fault uncertainty. The method is based on the statistical modelling of fault attributes and the simulation of the locations of the centres of the fault traces. Fault locations are generated from the thinning of a Poisson process using a spatially correlated probability field. The proposed algorithm for simulating fault traces takes into account soft data such as geological interpretations and geomechanical data. The simulations generate realisations of fault populations that reproduce observed faults, honour the statistics of the fault attributes, and respect the constraints of soft data, providing the means to thereby model and assess the related fault uncertainty. | LI Shuxing Roussos Dimitrakopulos | 2002 | Journal of Coal Science & Engineering(China)2002，8，2： | 2 |
| 14 | Exogenous melatonin improves the chilling tolerance and preharvest fruit shelf life in eggplant by affecting ROS-and senescence-related processes显示文摘Low temperature is the most common abiotic stress factors during the eggplant cultivation in solar greenhouses.Melatonin plays important roles in plant resistance to low temperature.However,the role of melatonin in regulating chilling tolerance and extending the preharvest shelf life of eggplant fruits is still unknown.In this study,we investigated the effects of exogenous melatonin on eggplant plants and fruits in response to low temperature.Under simulated low-temperature conditions,exogenous melatonin significantly relieved the chilling symptoms of seedlings by reducing reactive oxygen species (ROS) and malondialdehyde (MDA) levels and relative leakage rates.These reductions were caused by higher superoxide dismutase (SOD) and catalase (CAT) activities and increased endogenous polyamine and melatonin levels compared with those in untreated seedlings.Notably,the expression levels of SOD,CAT1/2,and polyamine synthesis genes (ADC and ODC) were also increased by 100μmol·L~(-1)melatonin,as well as those of genes involved in melatonin synthesis (TDC,T5H,SNAT,ASMT,and COMT) and cold regulation (COR1,CBFa/b,and ZAT2/6/12).To further investigate the effects of melatonin on eggplant leaves and fruits under natural low temperature conditions,100μmol·L~(-1)melatonin was sprayed on the functional leaves at three days before commodity maturation.Melatonin significantly alleviated chilling injury in the leaves and pericarp and extended the preharvest shelf life of the fruit by increasing the expression of COR1,CBF,ZAT2/6/12,and API5 and decreasing the expression of senescence-related genes (NCED1/2 and SAG12).Therefore,100μmol·L~(-1)melatonin improved chilling tolerance and fruit shelf life by upregulating ZAT2/6/12 to affect ROS-and senescence-related processes,which provides a reference for alleviating cold stress and extending the preharvest fruit shelf life in eggplant. | Lijun Song Zhuo Tan Weiwei Zhang Qiang Li Zhaoxiang Jiang Shuxing Shen Shuangxia Luo Xueping Chen | 2023 | Horticultural Plant Journal2023，9，3： | 2 |
| 15 | Optimal Weight and Parameter Estimation of Multi-structure and Unequal-Precision Data Fusion显示文摘Measured data fusion process is an effective way to improve the data process precision. In this paper,the fusion weight is firstly introduced, and then we study the optimal weight and parameter estimation using multistructure and unequal-precision data fusion. For the linear regression model, it is theoretically proved that the optimal weight is only related to the data measure precision,which is consistent with the classical Gauss-Markov theorem. For the nonlinear regression model, we analyze the method for calculating the optimal weight theoretically,and then provide the algorithm for the optimal weight and the parameter estimation for the actual data fusion. | WANG Jiongqi HE Zhangming ZHOU Haiyin LI Shuxing ZHOU Xuanying | 2017 | Chinese Journal of Electronics2017，26，6： | 2 |
| 16 | Atomically isolated Pd sites within Pd-S nanocrystals enable trifunctional catalysis for direct,electrocatalytic and photocatalytic syntheses of H_(2)O_(2)显示文摘Although high-efficiency production of hydrogen peroxide(H_(2)O_(2))can be realized separately by means of direct,electrochemical,and photocatalytic synthesis,developing versatile catalysts is particularly challenging yet desirable.Herein,for the first time we reported that palladium-sulphur nanocrystals(Pd-S NCs)can be adopted as robust and universal catalysts,which can realize the efficient O_(2) conversion by three methods.As a result,Pd-S NCs exhibit an excellent selectivity(89.5%)to H_(2)O_(2)with high productivity(133.6 mol·kgcat^(−1)·h^(−1))in the direct synthesis,along with the significantly enhanced H_(2)O_(2)production activity and stability via electrocatalytic and photocatalytic syntheses.It is demonstrated that the isolated Pd sites can enhance the adsorption of O_(2) and inhibit its O–O bond dissociation,improving H_(2)O_(2)selectivity and reducing H_(2)O_(2)degradation.Further study confirms that the difference in surface atom composition and arrangement is the key factor for different ORR mechanisms on Pd NCs and Pd-S NCs. | Tang Yang Chengyong Yang Jiabo Le Zhiyong Yu Lingzheng Bu Leigang Li Shuxing Bai Qi Shao Zhiwei Hu Chih-Wen Pao Jun Cheng Yonggang Feng Xiaoqing Huang | 2022 | Nano Research2022，15，3： | 2 |
| 17 | Control failure of the roll-isolated inertial navigation system under large pitch angle显示文摘Roll-isolation is an effective way for spinning vehicle to greatly reduce the roll gyro range of strapdown Inertial Navigation System(SINS)and increase the accuracy of inertial navigation.However,during a recent flight test,the roll-isolated control system failure was observed under a large pitch angle(706 h 685),which introduces a sharply increase in the roll angular velocity,the saturation of roll gyro and the inertial navigation failure.To address this issue,the governing equation of the roll-isolated system is derived with the consideration of various disturbance factors.The control failure is reproduced by numerical simulation.And the results show that the pitch and yaw angular velocity can cause a dramatic increase in roll rate under the large pitch angle,resulting in the roll-isolated control failure.Meanwhile,an improved roll-isolated control system is developed using PI controller,which is verified by mathematical simulation. | Jinchao SONG Shuxing YANG Fenfen XIONG | 2020 | Chinese Journal of Aeronautics2020，33，10： | 2 |
| 18 | The effect of Ti O2doping on catalytic performances of Ru/Ce O2,catalysts during catalytic combustion of chlorobenzene显示文摘 | Dai Qiguang Bai Shuxing Wang Jianwei | 2013 | Applied Catalysis B:Environmental2013，，： | 1 |
| 19 | On the Describing Functions of PWM Pneumatic High-speed on-off Valves显示文摘 | Yang Shuxing | 1993 | Journal of Beijing Institute and Technology1993，，2： | 1 |
| 20 | What makes turnips:anatomy,physiology and transcriptome during early stages of its hypocotyl-tuber development显示文摘Brassica species are characterized by their tremendous intraspecific diversity,exemplified by leafy vegetables,oilseeds,and crops with enlarged inflorescences or above ground storage organs.In contrast to potato tubers that are edible storage organs storing energy as starch and are the vegetative propagation modules,the storage organs of turnips,grown from true seed,are swollen hypocotyls with varying degrees of root and stem that mainly store glucose and fructose.To highlight their anatomical origin,we use the term“hypocotyl-tuber”for these turnip vegetative storage organs.We combined cytological,physiological,genetic and transcriptomic approaches,aiming to identify the initial stages,molecular pathways and regulatory genes for hypocotyl-tuber induction in turnips(B.rapa subsp.rapa).We first studied the development of the hypocotyl zone of turnip and Pak choi and found that 16 days after sowing(DAS)morphological changes occurred in the xylem which indicated the early tuberization stage.Tissue culture experiments showed a clear effect of auxin on hypocotyl-tuber growth.Differentially expressed genes between 1 and 6 weeks after sowing in turnip hypocotyls,located in genomic regions involved in tuber initiation and/or tuber growth defined by QTL and selective sweeps for tuber formation,were identified as candidate genes that were studied in more detail for their role in hypocotyl-tuber formation.This included a Bra-FLOR1 paralogue with increased expression 16 DAS,when the hypocotyl starts swelling,suggesting dual roles for duplicated flowering time genes in flowering and hypocotyltuber induction.Bra-CYP735A2 was identified for its possible role in tuber growth via trans-zeatin.Weigthed Coexpression Network Analysis(WGCNA)identified 59 modules of co-expressed genes.Bra-FLOR1 and Bra-CYP735A2 were grouped in a module that included several genes involved in carbohydrate transport and metabolism,cell-wall growth,auxin regulation and secondary metabolism that serve as starting points to illuminate the transcriptional regulation of hypocotyl-tuber formation and development. | Mengyang Liu Niccolo Bassetti Stefan Petrasch Ningwen Zhang Johan Bucher Shuxing Shen Jianjun Zhao Guusje Bonnema | 2019 | Horticulture Research2019，6，1： | 1 |
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