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| 1 | DYNAMICS MODEL AND SIMULATION OF FLAT VALVE SYSTEM OF INTERNAL COMBUSTION WATER PUMP显示文摘The dynamics differential equations are constructed, and the initial conditions are alsogiven. Simulation shows the following conclusions: The water pressure in cylinder has great instanta-neous pulsation and phase step when outlet valve or inlet valve opens, but is more gently in othertime; The volume efficiency is influenced by the output pressure slightly, and decreases as the work-ing rotational speed increases; When the inherent frequency of the valves is integer multiple of theworking frequency, the volume efficiency of system will decrease evidently. | Zhang Hongxin Zhang Tiezhu Wang Yushun Zhao Hong Huo Wei | 2005 | Chinese Journal of Mechanical Engineering2005，18，3： | 39 |
| 2 | Free return orbit design and characteristics analysis for manned lunar mission显示文摘A circumlunar free return orbit design model that satisfies manned lunar mission constraints is established. By combining analytical method with numerical method,a serial orbit design strategy from initial value design to precision solution is proposed. A simulation example is given,and the conclusion indicates that the method has excellent convergence performance and precision. According to a great deal of simulation results solved by the method,the free return orbit characters such as accessible moon orbit parameters,return orbit parameters,transfer delta velocity,etc. are analyzed,which can supply references to constitute manned lunar mission orbit scheme. | PENG QiBo SHEN HongXin LI HaiYang | 2011 | Science China(Technological Sciences)2011，54，12： | 24 |
| 3 | Influence of Valve's Characteristic on Total Performance of Three Cylinders Internal Combustion Water Pump显示文摘Intenal combustion pump(ICP) is a new type power device turning the thermal energy from fuel combustion into fluid pressure energy.Three cylinders prototype has just been developed.The study on the influence of valve's characteristic on ICP's total performance will found the base for its optimum design.Based on the theoretical and testing fruits of single cylinder prototype, the performance of the valves and complete appliance of the latest is simulated.When the natural frequency of valves is approximately to the round number times of the working frequency, volumetric efficiency is seriously low.The nominal rotational speed of the prototype is nearly to the speed where the volumetric efficiency is lowest, which is harmful to the normal work of ICP, so further structure optimization of valves should be carried out.The change of volumetric efficiency has great influence on the fuel consumption rate, output flow, effective thermal efficiency, effective power, and so on, but little on output pressure. | ZHANG Hongxin ZHANG Tiezhu WANG Weichao | 2009 | Chinese Journal of Mechanical Engineering2009，22，1： | 14 |
| 4 | Effect of heat treatment on LPSO morphology and mechanical properties of Mg-Zn-Y-Gd alloys显示文摘The mechanical properties and microstructure were investigated under different Zn content and heat treatment conditions in a Mg-Zn-YGd cast alloy.A part of the long period stacking order(LPSO)phases transformed to W-M^ZnaRE?phases with an increase in Zn content from 0.9 at.%to 1.8 at.%,and the ultimate tensile strength(UTS)increased from 229 MPa to 248 MPa.With solution treatment at 480°C,the content of the LPSO phase and strength sharply decreased in the Mg-1.8Zn-0.8Y-0.8Gd alloy,whereas this change was not significantly observed in the Mg-0.9Zn-O.8Y-O.8Gd alloy.After solution treatment,the elongation significantly improved and the UTS sharply decreased in both alloys.The lamellar and filminess LPSO phases were observed with aging treatment at 200℃.Moreover,the strengthening efficiency of lamellar and filminess LPSO phases was lower than that of the block LPSO phases.Therefore,the UTS of the T6 state was lower than that of the as-cast alloy. | Hongxin Liao Jonghyun Kim Taekyung Lee Jiangfeng Song Jian Peng Bin Jiang Fusheng Pan | 2020 | Journal of Magnesium and Alloys2020，8，4： | 14 |
| 5 | Study on multi-size seed-metering device for vertical plate soybean precision planter显示文摘Aiming to solve the problem of small range of the appropriately sowing seeds existing in a vertical disc seed-metering device,the planter plate series with four sizes were developed according to the variety and size distribution of all soybeans in China.The structure and working principle of the vertical disc soybean seed-metering device were detailed,and the influence of the diameter of soybean on the working performance of the seed-metering device was analyzed through the software EDEM virtual simulation,so as to achieve the goal of covering the soybean seeds with all sizes by the minimum planter plate series as well as to obtain the most appropriate operating speed of each planter plate by optimization.For the planter plates with the hole diameter of 7,9,12,16 mm,the appropriate size ranges of sowing seeds are 4.5-6.0,6.0-8.0,8.0-10.5,10.5-13.0 mm,respectively,and the appropriate operating speeds are 9,8,7,6 km/h,respectively.The results show that this planter plate series can meet the requirements of seeding with all sizes of soybeans at the range of the most appropriate operating speed.The study method can provide a reference for design and optimization of precision planters. | Liu Hongxin Guo Lifeng Fu Lulu Tang Shifa | 2015 | International Journal of Agricultural and Biological Engineering2015，8，1： | 13 |
| 6 | Point return orbit design and characteristics analysis for manned lunar mission显示文摘Point return orbit(PRO) of manned lunar mission is constrained by both lunar parking orbit and reentry corridor associated with reentry position.Besides,the fuel consumption and flight time should be economy.The patched conic equations which are adaptive to PRO are derived first,the PRO is modeled with fuel and time constraints based on the design variables of orbit parameters with clear physical meaning.After that,by combining analytical method with numerical method,a serial orbit design strategy from initial value design to precision solution is proposed.Simulation example indicates that the method has excellent convergence performance and precision.According to a great deal of simulation results by the method,the PRO characteristics such as Moon centered orbit parameters,Earth centered orbit parameters,transfer velocity change,etc.are analyzed,which can supply references to the manned lunar mission orbit scheme. | SHEN HongXin ZHOU JianPing PENG QiBo LI HaiYang | 2012 | Science China(Technological Sciences)2012，55，9： | 13 |
| 7 | Characteristic model based control of the X-34 reusable launch vehicle in its climbing phase显示文摘In this paper, a characteristic model based longitudinal control design for the trans-aerosphere vehicle X-34 in its transonic and hypersonic climbing phase is proposed. The design is based on the dynamic characteristics of the vehicle and the curves it is to track in this climbing phase. Through a detailed analysis of the aerodynamics and vehicle dynamics during this climbing phase, an explicit description of the tracking curve for the flight path angle is derived. On the basis of this tracking curve, the tracking curves for the two short-period variables, the angle of attack and the pitch rate, are designed. An all-coefficient adaptive controller is then designed, based on the characteristic modeling, to cause these two short-period variables to follow their respective tracking curves. The proposed design does not require multiple working points, making the design procedure simple. Numerical simulation is performed to validate the performance of the controller. The simulation results indicate that the resulting control law ensures that the vehicle climbs up successfully under the restrictions on the pitch angle and overloading. | MENG Bin WU HongXin LIN ZongLi LI Guo | 2009 | Science in China(Series F)2009，52，11： | 12 |
| 8 | Response of tree-ring width to rainfall gradient along the Tianshan Mountains of northwestern China显示文摘By comparing the long-term tree-ring growths at various geographic scales, we can make clear the effects of environmental variations on tree growth, and get an understanding of the responses of forest ecosystems to the possible changes in global and regional climate. Radial tree-ring growth of Picea schrenkiana and its relationship to air temperature and precipitation were investigated across longi- tude transects on the north slopes of the Tianshan Mountains in northwestern China. Tree-ring samples were collected and residual chronologies were developed for three different regions along a gradient of decreasing precipitation from west to east. Response-function analysis was conducted to quantify the relationships between tree-ring chronologies and climate variables, such as monthly mean temperature and monthly precipitation from 1961 to 1998, using the PRECON software program. The statistical characteristics of the chronologies showed that the three chronologies constructed in this study con- tained significant environmental signals and were well suitable to reveal the impacts of climatic change on tree growth and forest productivity. Annual ring-width variations were similar among the three sites, but the variability was greatest in the east. This research showed that the growth trends of Picea schrenkiana in the Tianshan Mountains have not followed a uniform pattern. Response-function analy- sis indicated that there were significant correlations between tree growth and climatic factors in all the three regions, among which precipitation was the principal. With decreasing precipitation, the response of tree-ring widths to increasing temperature changed from a positive to a negative correlation. As for precipitation, the positive relationship to tree-ring width always dominates. It could be expected that with increased temperature and decreased precipitation, the importance of precipitation to tree growth would increase, and the response of tree growth to environmental changes would also increase. This study emphasizes the importance of regional-scale investigations into the biosphere-climate interac- tions. The results of this research indicated a substantial increment of tree-ring radial growth as a re- sult of warmer and wetter climate in the eastern regions. However, climate change will have less effect on forest growth and primary production in the western regions. | SANG WeiGuo WANG YunXia SU HongXin LU ZhaoHua | 2007 | Chinese Science Bulletin2007，52，21： | 12 |
| 9 | Long-term stabilization of the optical fiber phase control using dual PID显示文摘We propose an approach of long-term stabilization of optical fiber phase by controlling a piezo-based phase modulator and a Peltier component attached to the fiber via a phase-locked loop( PLL) circuit w ith dual proportional-integral- derivative( PID) adjustment. With this approach,we can suppress the fast disturbance and slow drifting of optical fiber to satisfy the requirements of optical phase long-term locking. In theory,a mathematical model of an optical fiber phase control system is established. The disturbance term induced by environment influence is considered into the PLL model. The monotonous and continuous changing environment disturbance w ill cause a steady-state error in this theory model. The experimental results accords w ell w ith the theory. The steady-state performance,adjusting time,and overshoot can be improved by using the dual PID control. As a result,the long-term,highly stable and low noise fiber phase locking is realized experimentally. | WU Yue CHEN Guozhu SHEN Yong ZOU Hongxin | 2015 | Instrumentation2015，2，4： | 11 |
| 10 | On characteristic modeling of a class of flight vehicles'attitude dynamics显示文摘The characteristic modeling problem of flight vehicles'attitude dynamics is considered in this paper.In terms of the affine nonlinear system with triangle form of flight vehicles'attitude dynamics,a general method is presented to compress the dynamics into the characteristic model parameters,by introducing the time scale of nonlinear systems and a class of system states related compress functions.The parameter region and limit of the characteristic model are also given.From the given parameter region it is seen that the bound of the characteristic model parameters is dependent on the sampling period,the modeling error,the system order and the system change rate.The modeling error of the established characteristic model can be arbitrarily small according to the control precision,showing the difference between the characteristic model and other model reduction methods,that is,no system information is lost using this approach.On the basis of this modeling approach,the characteristic model of the flexible satellite attitude is established,as well as the bound and limit of the parameters,which sets a theoretical foundation for characteristic model based control design of flight vehicles. | MENG Bin &WU HongXin National Laboratory of Space Intelligent Control,Beijing Institute of Control Engineering,Beijing 100190,China | 2010 | Science China(Technological Sciences)2010，53，8： | 11 |
| 11 | Signaling pathways and targeted therapy for myocardial infarction显示文摘Although the treatment of myocardial infarction(MI)has improved considerably,it is still a worldwide disease with high morbidity and high mortality.Whilst there is still a long way to go for discovering ideal treatments,therapeutic strategies committed to cardioprotection and cardiac repair following cardiac ischemia are emerging.Evidence of pathological characteristics in MI illustrates cell signaling pathways that participate in the survival,proliferation,apoptosis,autophagy of cardiomyocytes,endothelial cells,fibroblasts,monocytes,and stem cells.These signaling pathways include the key players in inflammation response,e.g.,NLRP3/caspase-1 and TLR4/MyD88/NF-κB;the crucial mediators in oxidative stress and apoptosis,for instance,Notch,Hippo/YAP,RhoA/ROCK,Nrf2/HO-1,and Sonic hedgehog;the controller of myocardial fibrosis such as TGF-β/SMADs and Wnt/β-catenin;and the main regulator of angiogenesis,PI3K/Akt,MAPK,JAK/STAT,Sonic hedgehog,etc.Since signaling pathways play an important role in administering the process of MI,aiming at targeting these aberrant signaling pathways and improving the pathological manifestations in MI is indispensable and promising.Hence,drug therapy,gene therapy,protein therapy,cell therapy,and exosome therapy have been emerging and are known as novel therapies.In this review,we summarize the therapeutic strategies for MI by regulating these associated pathways,which contribute to inhibiting cardiomyocytes death,attenuating inflammation,enhancing angiogenesis,etc.so as to repair and re-functionalize damaged hearts. | Qing Zhang Lu Wang Shiqi Wang Hongxin Cheng Lin Xu Gaiqin Pei Yang Wang Chenying Fu Yangfu Jiang Chengqi He Quan Wei | 2022 | Signal Transduction and Targeted Therapy2022，7，4： | 11 |
| 12 | Water mass of the northward throughflow in the Bering Strait in the summer of 2003显示文摘The temperature and salinity data obtained by the Chinese national arctic research expedition (CHINARE2003) are used to study the water structure in the Bering Strait and ambient regions. Four water masses appeared in the research region: the intermediate Bering Sea water mass (IBWM), the Alaska coastal water (ACW), the Anadyr water (AW) and the Bering shelf water (BSW). The AW originates from the IBWM, but the upper layer water has been greatly altered. In the cruise on 28/29 July 2003, there were only the BSW and ACW in a section across the Bering Strait (BS section), but in the September 12/13 cruise, the AW, BSW and ACW flowed parallelly into the Bering Strait. The upper waters of these water masses were all altered due to ice melting, runoff, solar radiation, and wind mixing. The waters in the central and northern parts of Bering Strait stratified by two uniform layers,were expressed as the typical feature of the water masses originating from the pacific. A two-layer structure also dominated the vertical stratification in most part of the Chukchi Sea. An obvious subseasonal variation was observed in the BS section, which caused varying transportation of fresh water, heat, and substance, and produced a long-term and extensive impact on the Arctic Ocean. | ZHAO Jinping SHI Jiuxin GAO Guoping JIAO Yutian ZHANG Hongxin | 2006 | Acta Oceanologica Sinica2006，25，2： | 10 |
| 13 | Involvement of annexin A2 in anti-β2GPI/β2 GPI-induced tissue factor expression on monocytes显示文摘成长证据表明那 beta_2-glycoprotein (beta_2GPI ) 我是为仔细与 thrombotic 事件 inantiphospholipid 症候群(APS ) 被联系的 antiphospholipid 抗体的关键目标[1 ] 。Anti-beta_2GPI/beta_2GPI 建筑群能绑在单核白血球和 endothelial 房间的表面膜,支持织物这些房间上的因素(TF ) 活动,并且因此增加血栓的风险。然而,位于行动 ofanti-beta_2GPI/beta_2GPI 下面的机制很好没被理解。效果 ofanti-beta_2GPI/beta_2GPI 要求一个信号的转导进房间并且因此,包含房间表面受体,这被建议。因为 anti-beta_2GPI/beta_2GPI 的效果不看起来被 Fc 受体,也不由细胞膜的否定地控告的 phospholipids 调停,调查者安置为 beta_2GPI 的不同房间表面受体的存在。 | Hong Zhou Shucai Ling Yin Yu Ting Wang Hongxin Hu | 2007 | Cell Research2007，17，8： | 9 |
| 14 | CD146 is essential for PDGFRβ-induced pericyte recruitment显示文摘 | Jianan Chen Yongting LUO Hongxin Huang Shuilong Wu Jing Feng Jingjing Zhang Xiyun Yan | 2018 | Protein & Cell2018，9，8： | 9 |
| 15 | Modified joint probabilistic data association with classification-aided for multitarget tracking显示文摘Joint probabilistic data association is an effective method for tracking multiple targets in clutter, but only the target kinematic information is used in measure-to-track association. If the kinematic likelihoods are similar for different closely spaced targets, there is ambiguity in using the kinematic information alone; the cor-rect association probability will decrease in conventional joint probabilistic data association algorithm and track coalescence will occur easily. A modified algorithm of joint probabilistic data association with classification-aided is presented, which avoids track coalescence when tracking multiple neighboring targets. Firstly, an identification matrix is defined, which is used to simplify validation matrix to decrease computational complexity. Then, target class information is integrated into the data association process. Performance comparisons with and without the use of class information in JPDA are presented on multiple closely spaced maneuvering targets tracking problem. Simulation results quantify the benefits of classification-aided JPDA for improved multiple targets tracking, espe-cially in the presence of association uncertainty in the kinematic measurement and target maneuvering. Simulation results indicate that the algorithm is valid. | Ba Hongxin Cao Lei He Xinyi Cheng Qun | 2008 | Journal of Systems Engineering and Electronics2008，19，3： | 8 |
| 16 | Multi-objective interplanetary trajectory optimization combining low-thrust propulsion and gravity-assist maneuvers显示文摘To expand mission capabilities needed without a proportional increase in cost or risk for exploration of the solar system,the multiple objective trajectory using low-thrust propulsion and gravity-assist technique is considered.However,low-thrust,gravity-assist trajectories pose significant optimization challenges because of their large design space.Here,the planets are selected as primal scientific mission goals,while the asteroids are selected as secondary scientific mission goals,and a global trajectory optimization problem is introduced and formulated.This multi-objective decision making process is transformed into a bi-level programming problem,where the targets like planets with small subsamples but high weight are optimized in up level,and targets like asteroids with large subsamples but low weight are optimized in down level.Then,the selected solutions for bi-level programming are optimized thanks to a cooperative Differential Evolution(DE) algorithm that is developed from the original DE algorithm;in addition,an sequential quadratic programming(SQP) method is used in low-thrust optimization.This solution approach is successfully applied to the simulation case of the multi-objective trajectory design problem.The results obtained are presented and discussed. | SHEN HongXin ZHOU JianPing PENG QiBo LI HaiYang LI JiuTian | 2012 | Science China(Technological Sciences)2012，55，3： | 8 |
| 17 | Efficacy of Lubeikangru formulation in mice with hyperplasia of the mammary glands induced by estrogen and progesterone显示文摘OBJECTIVE: To evaluate the protective effects of Lubeikangru formula(LF) on hyperplasia of the mammary glands(HMG) induced by estrogen and progesterone in mice.METHODS: Female mice were divided randomly into five groups: normal, model, tamoxifen(3 mg/kg),Rupixiao(900 mg/kg) and LF(900 mg/kg). All mice except those in the normal group were treated sequentially with estradiol and progesterone to induce HMG. From the tenth day of induction, mice in normal and model groups received distilled water and mice in the other groups were given the corresponding drugs by gavage, once a day, for 30 d.At the end of treatment, the mammary glands, ovaries, hypothalamus, and serum was collected for whole-mount and hematoxylin and eosin(HE)staining, enzyme-linked immunosorbent assays(ELISAs), or western blotting.RESULTS: Whole-mount and HE staining of mammary glands showed that LF rescued(at least in part) the hyperplasic morphology of the mammary glands, and the number of branch points decreased after LF treatment(P < 0.05). ELISAs revealed that levels of estrogen and progesterone were decreased following LF treatment, whereas levels of gonadotropin-releasing hormone, follicle-stimulating hormone, and luteinizing hormone were increased in serum and tissues. Western blotting confirmed that LF treatment led to a reduction in expression of phosphorylated(p)-Erk, p-p38 and p-c-Jun N-terminal kinase. LF was also confirmed to be safe by acute-toxicity tests.CONCLUSION: LF can protect the mammary glands of mice from estrogen-and progesterone-induced hyperplasia by adjusting hormone levels and regulating the mitogen-activated protein kinase pathway. | Sun Li Guo Donghui Liu Qian Xue Yanan Jiang Ning Zheng Hongxin | 2019 | Journal of Traditional Chinese Medicine2019，39，2： | 8 |
| 18 | Zero-knowledge proofs of retrievability显示文摘Proof of retrievability (POR) is a technique for ensuring the integrity of data in outsourced storage services.In this paper,we address the construction of POR protocol on the standard model of interactive proof systems.We propose the first interactive POR scheme to prevent the fraudulence of prover and the leakage of verified data.We also give full proofs of soundness and zero-knowledge properties by constructing a polynomial-time rewindable knowledge extractor under the computational Diffie-Hellman assumption.In particular,the verification process of this scheme requires a low,constant amount of overhead,which minimizes communication complexity. | ZHU Yan WANG HuaiXi HU ZeXing AHN Gail-Joon HU HongXin | 2011 | Science China(Information Sciences)2011，54，8： | 8 |
| 19 | Recognition of motor imagery tasks for BCI using CSP and chaotic PSO twin SVM显示文摘Accurate modeling and recognition of the brain activity patterns for reliable communication and interaction are still a challenging task for the motor imagery(MI) brain-computer interface(BCI) system. In this paper, we propose a common spatial pattern(CSP) and chaotic particle swarm optimization(CPSO) twin support vector machine(TWSVM) scheme for classification of MI electroencephalography(EEG). The self-adaptive artifact removal and CSP were used to obtain the most distinguishable features. To improve the recognition results, CPSO was employed to tune the hyper-parameters of the TWSVM classifier. The usefulness of the proposed method was evaluated using the BCI competition IV-IIa dataset. The experimental results showed that the mean recognition accuracy of our proposed method was increased by 5.35%, 4.33%, 0.78%, 1.45%, and 9.26% compared with the CPSO support vector machine(SVM), particle swarm optimization(PSO) TWSVM, linear discriminant analysis(LDA), back propagation(BP) and probabilistic neural network(PNN), respectively. Furthermore, it achieved a faster or comparable central processing unit(CPU) running time over the traditional SVM methods. | Li Duan Zhang Hongxin Muhammad Saad Khan Mi Fang | 2017 | The Journal of China Universities of Posts and Telecommunications2017，24，3： | 7 |
| 20 | A mini-review on recent progress of new sensitizers for luminescence of lanthanide doped nanomaterials显示文摘Trivalent lanthanide(Ln2+)doped luminescent nanocrystals are promising for applications ranging from biosensor,lasing,super-resolution nanoscopy,information security and so on.Although the utility prospect is of great attractions,the light absorption of these lanthanide doped nanocrystals is inherently weak due to the electric dipole-forbidden 4f→4f transitions.Even worse,the quantum yields of upconverison nanocrystals are very low,which will unavoidably hinder their further applications.In a typical lanthanide luminescent nanosystem,both sensitizers as light absorption centers and activators as light emitting centers are necessary and important for desired luminescence properties.Among various sensitization systems,only Yb3+and Nd+are considered as the most efficient sensitizers.Thus,the corresponding excitation wavelengths are strictly limited around 980 and 808 nm.To enrich excitation wavelengths and boost luminescence intensity,exploring more sensitization units that possess larger absorption cross section,higher efficiency of energy transfer process and independent excitation is imperative and beneficial for the demands of different applications,such as broadened absorption in near infrared(NIR)region for higher conversion efficiency of solar cells,prolonged excitation wavelength to second near infrared windows region(NIR Ⅱ,1,000-1,700 nm)for in vivo fluorescence imaging with deeper tissue depth and higher spatial resolution,more orthogonal excitations and emissions to improve optical multiplexing,and so on.Therefore,in the review,we primarily conclude several major energy transfer mechanisms from sensitizers to activators.Then we present three kinds of sensitizers,including lanthanide ions,organic dyes and quantum dots(QDs),and introduce the newly designed sensitization system that allows us to exploit superior excitation wavelength and amplity luminescence intensity.Finally,several future challenges and opportunities for the sensitizing strategies are discussed in hope of directing and broadening the applications of lanthanide nanosystem. | Hongxin Zhang Zi-Han Chen Xuan Liu Fan Zhang | 2020 | Nano Research2020，13，7： | 7 |
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