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| 1 | 车辆悬架系统及其性能评价综述显示文摘悬架系统是汽车重要的组成部分,汽车悬架系统是影响汽车行驶平顺性、操纵稳定性和安全性的重要因素。因此,深入研究汽车悬架是提高现代汽车质量的重要举措。本研究综述了国内外悬架系统的研究现状,介绍了悬架系统在车辆中的应用,比较了几种悬架系统结构的优势与不足,讨论了悬架系统性能的评价方法与控制理论,指出了悬架系统的研究发展方向和趋势。 | 张俊红 洪刘生 杨文钊 郭鹏 He Zhenpeng | 2015 | 机械设计与研究2015，31，6： | 22 |
| 2 | gt-C3N4 coordinated single atom as an efficient electrocatalyst for nitrogen reduction reaction显示文摘The electrochemical reduction of nitrogen to ammonia is a promising way to produce ammonia at mild condition.The design and preparation of an efficient catalyst with high ammonia selectivity is critical for the real applications.In this work,a series of transition metal (TM =Sc,Ti,V,Cr,Mn,Fe,Co,Ni,Cu,Zn,Y,Zr,Nb,Mo,Tc,Ru,Rh,Pd,Ag,and Cd) atoms supported by gt-C3N4 (TM/gt-C3N4) are investigated as electrocatalysts for the nitrogen reduction reaction (NRR) based on density functional calculations.It is found that Mo/gt-C3N4 with a limiting potential of-0.82 V is the best catalyst for standing-on adsorbed N2 cases.While for lying-on adsorbed N2 cases,V/gt-C3N4 with a limiting potential of-0.79 V is berer than other materials.It is believed that this work provides several promising candidates for the non-noble metal electrocatalysts for NRR at mild condition. | Lifu Zhang Wanghui Zhao Wenhua Zhang Jing Chen Zhenpeng Hu | 2019 | Nano Research2019，12，5： | 11 |
| 3 | DDoS Attack Detection Scheme Based on Entropy and PSO-BP Neural Network in SDN显示文摘SDN (Software Defined Network) has many security problems, and DDoS attack is undoubtedly the most serious harm to SDN architecture network. How to accurately and effectively detect DDoS attacks has always been a difficult point and focus of SDN security research. Based on the characteristics of SDN, a DDoS attack detection method combining generalized entropy and PSOBP neural network is proposed. The traffic is pre-detected by the generalized entropy method deployed on the switch, and the detection result is divided into normal and abnormal. Locate the switch that issued the abnormal alarm. The controller uses the PSO-BP neural network to detect whether a DDoS attack occurs by further extracting the flow features of the abnormal switch. Experiments show that compared with other methods, the detection accurate rate is guaranteed while the CPU load of the controller is reduced, and the detection capability is better. | Zhenpeng Liu Yupeng He Wensheng Wang Bin Zhang | 2019 | China Communications2019，16，7： | 8 |
| 4 | Metallic mesocrystal nanosheets of vanadium nitride for high-performance all-solid-state pseudocapacitors显示文摘转变金属氮化物(TMN ) 具有由他们优异电的电导率,优秀环境耐久性和高反应选择的协作优点的优点的特别兴趣,还完成灵活设计和操作是困难的。此处,钒氮化物(VN ) 的 mesocrystal nanosheets (MCNS ) 从热地稳定的分层的钒铜经由一条范围生长线路被综合,代表第一二维(2D ) 在无机的混合物的金属性的 mesocrystal。从他们的 single-crystalline-like 有益于远程的电子连接, VN MCNS 交付 1.44 的电的传导性 ??? 汰獵瀭畬 ?? ￣吗? | Wentuan Bi Zhenpeng Hu Xiaogang Li Changzheng Wu Junchi Wu Yi Xie | 2015 | Nano Research2015，8，1： | 7 |
| 5 | Traditional Chinese Medicine syndrome patterns and Qi-regulating,chest-relaxing and blood-activating therapy on cardiac syndrome X显示文摘OBJECTIVE:To master the syndrome patterns characteristics and explore the effective therapy methods ofTraditional Chinese Medicine(TCM) for cardiac syndrome X(CSX).METHODS:The TCM syndrome characteristics were mastered and the TCM intervention programs were determined by clinical investigations for TCM syndrome patterns characteristics of CSX patients.Then,the clinical efficacy studies on TCM intervention for CSX were carried out through randomized controlled trials.RESULTS:CSX is a clinical syndrome with the main manifestations of chest pain and chest stuffiness,and Qi stagnation,phlegm retention and blood stasis are the basic symptoms of CSX.As a result,the Qi-regulating,chest-relaxing and blood-activating therapy integrated with some Western Medicines was adopted for treatment.The effect of Qi-regulating,chest-relaxing and blood-activating therapy can reduce the frequency and degree of angina,improve the symptoms and exercise the tolerance of patients,inhibit the inflammatory response of vascular walls and protect the function of vascular endothelial cells,which is better than that of the simple and conventionalWestern Medicine alone.CONCLUSION:A good effect was achieved in the integration of Chinese and Western Medicines for CSX.The therapy is worthy to be applied further in clinical practice.On the other hand,more long-term and randomised controlled studies with large samples are still required to further determine the clinical efficacy and safety of the therapy. | Yingfei Bi Jingyuan Mao Xianliang Wang Yongbin Ge Henghe Wang Zhenpeng Zhang | 2013 | Journal of Traditional Chinese Medicine2013，33，2： | 6 |
| 6 | Dynamic variation and the fast acceleration of particles in Earth's radiation belt显示文摘We have quantitatively investigated the radiation belt's dynamic variations of 1.5-6.0 MeV electrons during 54 CME (coronal mass ejection)-driven storms from 1993 to 2003 and 26 CIR (corotating interaction region)-driven recurrent storms in 1995 by utilizing case and statistical studies based on the data from the SAMPEX satellite. It is found that the boundaries determined by fitting an exponential to the flux as a function of L shell obtained in this study agree with the observed outer and inner boundaries of the outer radiation belt. Furthermore, we have constructed the Radiation Belt Content (RBC) index by integrating the number density of electrons between those inner and outer boundaries. According to the ratio of the maximum RBC index during the recovery phase to the pre-storm average RBC index, we conclude that CME-driven storms produce more relativistic electrons than CIR-driven storms in the entire outer radiation belt, although the relativistic electron fluxes during CIR-related storms are much higher than those during CME-related storms at geosynchronous orbit. The physical radiation belt model STEERB is based on the three-dimensional Fokker-Planck equation and includes the physical processes of local wave-particle interactions, radial diffusion, and adiabatic transport. Due to the limitation of numerical schemes, formal radiation belt models do not include the cross diffusion term of local wave-particle interactions. The numerical experiments of STEERB have shown that the energetic electron fluxes can be overestimated by a factor of 5 or even several orders (depending on the pitch angle) if the cross diffusion term is ignored. This implies that the cross diffusion term is indispensable for the evaluation of radiation belt electron fluxes. Formal radiation belt models often adopt dipole magnetic field; the time varying Hilmer-Voigt geomagnetic field was adopted by the STEERB model, which self-consistently included the adiabatic transport process. The test simulations clearly indicate that the adiabatic process can significantly affect the evolution of radiation belt electrons. The interactions between interplanetary shocks and magnetosphere can excite ULF waves in the inner magnetosphere; the excited polodial mode ULF wave can cause the fast acceleration of 'killer electrons'. The acceleration mechanism of energetic electrons by poloidal and toroidal mode ULF wave is different at different L shells. The acceleration of energetic electrons by the toroidal mode ULF waves becomes important in the region with a larger L shell (the outer magnetosphere); in smaller L shell regions (the inner magnetosphere), the poloidal mode ULF becomes responsible for the acceleration of energetic electrons. | ZONG QiuGang YUAN ChongJing WANG YongFu SU ZhenPeng | 2013 | Science China Earth Sciences2013，56，7： | 5 |
| 7 | NLP1 reciprocally regulates nitrate inhibition of nodulation through SUNN-CRA2 signaling in Medicago truncatula显示文摘Most legume plants can associate with diazotrophic soil bacteria called rhizobia,resulting in new root organs called nodules that enable N2 fixation.Nodulation is an energy-consuming process,and nodule number is tightly regulated by independent systemic signaling pathways controlled by CLE/SUNN and CEP/CRA2.Moreover,nitrate inhibits legume nodulation via local and systemic regulatory pathways.In Medicago truncatula,NLP1 plays important roles in nitrate-induced inhibition of nodulation,but the relationship between systemic and local pathways in mediating nodulation inhibition by nitrate is poorly understood.In this study,we found that nitrate induces CLE35 expression in an NLP1-dependent manner and that NLP1 binds directly to the CLE35 promoter to activate its expression.Grafting experiments revealed that the systemic control of nodule number involves negative regulation by SUNN and positive regulation by CRA2 in the shoot,and that NLP1’s control of the inhibition of rhizobial infection,nodule development,and nitrogenase activity in response to nitrate is determined by the root.Unexpectedly,grafting experiments showed that loss of CRA2 in the root increases nodule number at inhibitory nitrate levels,probably because of CEP1/2 upregulation in the cra2 mutants,suggesting that CRA2 exerts active negative feedback regulation in the root. | Zhenpeng Luo Jie-shun Lin Yali Zhu Mengdi Fu Xiaolin Li Fang Xie | 2021 | Plant Communications2021，2，3： | 5 |
| 8 | In vitro antioxidant and antiproliferative effects of ellagic acid and its colonic metabolite, urolithins, on human bladder cancer T24 cells显示文摘 | Zhenpeng Qiu Benhong Zhou Long Jin Honglian Yu Lijuan Liu Youyi Liu Chengchen Qin Shuixiang Xie Fan Zhu | 2013 | Food and Chemical Toxicology2013，，： | 3 |
| 9 | Design and Implementation of an SDN-Enabled DNS Security Framework显示文摘The Domain Name System(DNS) is suffering from the vulnerabilities exploited to launch the cache poisoning attack. Inspired by biodiversity, we design and implement a non-intrusive and tolerant secure architecture Multi-DNS(MDNS) to deal with it. MDNS consists of Scheduling Proxy and DNS server pool with heterogeneous DNSs in it. And the Scheduling Proxy dynamically schedules m DNSs to provide service in parallel and adopts the vote results from majority of DNSs to decide valid replies. And benefit from the centralized control of software defined networking(SDN), we implement a proof of concept for it. Evaluation results prove the validity and availability of MDNS and its intrusion/fault tolerance, while the average delay can be controlled in 0.3s. | Zhenpeng Wang Hongchao Hu Guozhen Cheng | 2019 | China Communications2019，16，2： | 3 |
| 10 | An explicit method for numerical simulation of wave equations显示文摘In this paper, a method to develop a hierarchy of explicit recursion formulas for numerical simulation in an irregular grid for scalar wave equations is presented and its accuracy is illustrated via 2-D and 1-D models. Approaches to develop the stable formulas which are of 2M-order accuracy in both time and space with M being a positive integer for regular grids are discussed and illustrated by constructing the second order (M = 1) and the fourth order (M = 2) recursion formulas. | Liu Heng Liao Zhenpeng | 2009 | Earthquake Engineering and Engineering Vibration2009，8，1： | 3 |
| 11 | Analysis of Oil Consumption in Cylinder of Diesel Engine for Optimization of Piston Rings显示文摘The performance and particulate emission of a diesel engine are affected by the consumption of lubricating oil.Most studies on oil consumption mechanism of the cylinder have been done by using the experimental method,however they are very costly.Therefore,it is very necessary to study oil consumption mechanism of the cylinder and obtain the accurate results by the calculation method.Firstly,four main modes of lubricating oil consumption in cylinder are analyzed and then the oil consumption rate under common working conditions are calculated for the four modes based on an engine.Then,the factors that affect the lubricating oil consumption such as working conditions,the second ring closed gap,the elastic force of the piston rings are also investigated for the four modes.The calculation results show that most of the lubricating oil is consumed by evaporation on the liner surface.Besides,there are three other findings:(1) The oil evaporation from the liner is determined by the working condition of an engine;(2) The increase of the ring closed gap reduces the oil blow through the top ring end gap but increases blow-by;(3) With the increase of the elastic force of the ring,both the left oil film thickness and the oil throw-off at the top ring decrease.The oil scraping of the piston top edge is consequently reduced while the friction loss between the rings and the liner increases.A neural network prediction model of the lubricating oil consumption in cylinder is established based on the BP neural network theory,and then the model is trained and validated.The main piston rings parameters which affect the oil consumption are optimized by using the BP neural network prediction model and the prediction accuracy of this BP neural network is within 8%,which is acceptable for normal engineering applications.The oil consumption is also measured experimentally.The relative errors of the calculated and experimental values are less than 10%,verifying the validity of the simulation results.Applying the established simulation model and the validated BP network model is able to generate numerical results with sufficient accuracy,which significantly reduces experimental work and provides guidance for the optimal design of the piston rings diesel engines. | ZHANG Junhong ZHANG Guichang HE Zhenpeng LIN Jiewei LIU Hai | 2013 | Chinese Journal of Mechanical Engineering2013，26，1： | 3 |
| 12 | Tool Orientation Optimization and Path Planning for 5-Axis Machining显示文摘Tool path generation is a fundamental problem in 5-axis CNC machining, which consists of tool orientation planning and cutter-contact(CC) point planning. The planning strategy highly depends on the type of tool cutters. For ball-end cutters, the tool orientation and CC point location can be planned separately;while for flat end cutters, the two are highly dependent on each other. This paper generates a smooth tool path of workpiece surfaces for flat end mills from two stages: Computing smooth tool orientations on the surface without gouging and collisions and then designing the CC point path. By solving the tool posture optimization problem the authors achieve both the path smoothness and the machining efficiency. Experimental results are provided to show the effectiveness of the method. | YUAN Chunming MI Zhenpeng JIA Xiaohong LIN Fengming SHEN Liyong | 2021 | Journal of Systems Science & Complexity2021，34，1： | 3 |
| 13 | Exohiss wave enhancement following substorm electron injection in the dayside magnetosphere显示文摘Exohiss is a low-frequency structureless whistler-mode emission potentially contributing to the precipitation loss of radiation belt electrons outside the plasmasphere. Exohiss is usually considered the plasmaspheric hiss leaked out of the dayside plasmapause.However, the evolution of exohiss after the leakage has not been fully understood. Here we report the prompt enhancements of exohiss waves following substorm injections observed by Van Allen Probes. Within several minutes, the energetic electron fluxes around 100 keV were enhanced by up to 5 times, accompanied by an up to 10-time increase of the exohiss wave power. These substorm-injected electrons are shown to produce a new peak of linear growth rate in the exohiss band(< 0.1 f_(ce)). The corresponding path-integrated growth rate of wave power within 10° latitude of the magnetic equatorial plane can reach 13.4, approximately explaining the observed enhancement of exohiss waves. These observations and simulations suggest that the substorm-injected energetic electrons could amplify the preexisting exohiss waves. | ZhongLei Gao ZhenPeng Su FuLiang Xiao HuiNan Zheng YuMing Wang Shui Wang H. E. Spence G.D. Reeves D. N. Baker J. B. Blake H.O. Funsten | 2018 | Earth and Planetary Physics2018，2，5： | 2 |
| 14 | Comparative Study of Acid and Alkaline Stimulants with Granite in an Enhanced Geothermal System显示文摘The Enhanced Geothermal System(EGS) is an artificial geothermal system that aims to economically extract heat from hot dry rock(HDR) through the creation of an artificial geothermal reservoir. Chemical stimulation is thought to be an effective method to create fracture networks and open existing fractures in hot dry rocks by injecting chemical agents into the reservoir to dissolve the minerals. Granite is a common type of hot dry rock. In this paper, a series of chemical stimulation experiments were implemented using acid and alkaline agents under high temperature and pressure conditions that mimic the environment of formation. Granite rock samples used in the experiments are collected from the potential EGS reservoir in the Matouying area, Hebei, China. Laboratory experimental results show that the corrosion ratio per unit area of rock is 3.2% in static acid chemical experiments and 0.51% in static alkaline chemical experiments. The permeability of the core is increased by 1.62 times in dynamic acid chemical experiments and 2.45 times in dynamic alkaline chemical experiments. A scanning electron microscope analysis of the core illustrates that secondary minerals, such as chlorite, spherical silica, and montmorillonite, were formed, due to acid-rock interaction with plagioclase being precipitated by alkaline-rock interactions. Masking agents in alkaline chemical agents can slightly reduce the degree of plagioclase formation. A chemical simulation model was built using TOUGHREACT, the mineral dissolution and associated ion concentration variation being reproduced by this reactive transport model. | XU Jianan FENG Bo CUI Zhenpeng LIU Xiyao KE Zunsong FENG Guanhong | 2021 | Acta Geologica Sinica(English Edition)2021，95，6： | 2 |
| 15 | Submicrosecond electro-optical switching of one-dimensional soft photonic crystals显示文摘Soft photonic crystals are appealing due to their self-assembly ability,wide tunability,and multistimuli-responsiveness.However,their response time is relatively slow,ranging from milliseconds to minutes.Here,we report submicrosecond switching of chiral liquid crystals(LCs)with 1D photonic microstructures,where electric fields modify the orientational order of molecules and quench their fluctuations,rather than altering the orientation.Thus,the adjusted refractive indices result in a fast shift of the photonic bandgap,on the order of 100 ns,which is four orders of magnitude faster than conventional electro-optic switching in cholesterics.This work offers tremendous opportunities for soft photonic applications. | Lingling Ma Chaoyi Li Luyao Sun Zhenpeng Song Yanqing Lu Bingxiang Li | 2022 | Photonics Research2022，10，3： | 2 |
| 16 | Synergistic piezoelectricity enhanced BaTiO_(3)/polyacrylonitrile elastomer-based highly sensitive pressure sensor for intelligent sensing and posture recognition applications显示文摘Designing stretchable and skin-conformal self-powered sensors for intelligent sensing and posture recognition is challenging.Here,based on a multi-force mixing and vulcanization process,as well as synergistically piezoelectricity of BaTiO_(3)and polyacrylonitrile,an all-in-one,stretchable,and self-powered elastomer-based piezo-pressure sensor(ASPS)with high sensitivity is reported.The ASPS presents excellent sensitivity(0.93 V/104 Pa of voltage and 4.92 nA/104 Pa of current at a pressure of 10-200 kPa)and high durability(over 10,000 cycles).Moreover,the ASPS exhibits a wide measurement range,good linearity,rapid response time,and stable frequency response.All components were fabricated using silicone,affording satisfactory skinconformality for sensing postures.Through cooperation with a homemade circuit and artificial intelligence algorithm,an information processing strategy was proposed to realize intelligent sensing and recognition.The home-made circuit achieves the acquisition and wireless transmission of ASPS signals(transmission distance up to 50 m),and the algorithm realizes the classification and identification of ASPS signals(accuracy up to 99.5%).This study proposes not only a novel fabrication method for developing self-powered sensors,but also a new information processing strategy for intelligent sensing and recognition,which offers significant application potential in human-machine interaction,physiological analysis,and medical research. | Junbin Yu Shuai Xian Zhenpeng Zhang Xiaojuan Hou Jian He Jiliang Mu Wenping Geng Xiaojun Qiao Le Zhang Xiujian Chou | 2023 | Nano Research2023，16，4： | 2 |
| 17 | Orchestrating Network Functions in Software-Defined Networks显示文摘Software.defined networking(SDN) enables third.part companies to participate in the network function innovations. A number of instances for one network function will inevitably co.exist in the network. Although some orchestration architecture has been proposed to chain network functions, rare works are focused on how to optimize this process. In this paper, we propose an optimized model for network function orchestration, function combination model(FCM). Our main contributions are as following. First, network functions are featured with a new abstraction, and are open to external providers. And FCM identifies network functions using unique type, and organizes their instances distributed over the network with the appropriate way. Second, with the specialized demands, we can combine function instances under the global network views, and formulate it into the problem of Boolean linear program(BLP). A simulated annealing algorithm is designed to approach optimal solution for this BLP. Finally, the numerical experiment demonstrates that our model can create outstanding composite schemas efficiently. | Hongchao Hu Lin Pang Zhenpeng Wang Guozhen Cheng | 2017 | China Communications2017，14，2： | 2 |
| 18 | Helioscopianoids A–Q,bioactive jatrophane diterpenoid esters from Euphorbia helioscopia显示文摘The EtOH extracts of the whole plants of Euphorbia helioscopia afforded 17 new jatrophane diterpenoid esters, helioscopianoids A–Q(1–17), along with eight known compounds(18–25). Their structures were elucidated by extensive spectroscopic methods and Mo_2(OAc)_4-induced ECD analysis,and the structures of compounds 1, 2, and 7 were confirmed by X-ray crystallography. Compounds 1–17 were evaluated for inhibitory effects on P-glycoprotein(P-gp) in an adriamycin(ADM)-resistant human breast adenocarcinoma cell line(MCF-7/ADR) and neuroprotective effects against serum deprivationinduced and rotenone-induced PC12 cell damage. Compounds 8 and 16 increased the accumulation of ADM in MCF-7/ADR cells by approximately 3-fold at a concentration of 20 μmol/L. Compound 8 could attenuate rotenone-induced PC12 cell damage, and compounds 2, 8, and 12 showed neuroprotective activities against serum deprivation-induced PC12 cell damage. | Zhenpeng Mai Gang Ni Yanfei Liu Zhao Zhang Li Li Naihong Chen Dequan Yu | 2018 | Acta Pharmaceutica Sinica B2018，8，5： | 2 |
| 19 | Probing the degenerate pattern growth of {100}<011> orientation in a directionally solidified Al-4.5 wt% Cu alloy显示文摘Degenerate pattern is a seemingly disordered morphology but it exhibits the inherently ordered crystal connected with tip-splitting and limited stability which makes it difficult to observe in the metallic system. Here we employ(100)[011] orientated planar-front seeds using directional solidification and reveal the fundamental origins of the degenerate pattern growth in an Al-4.5 wt% Cu alloy. We find that the spacing of the tip-splitting(λ) in the degenerate of the alloys followed a power law,λ∝V^-0.5, and the frequency(f) of the splitting was related to the growth velocity(V) by f ∝V^1.5. The dimensionless growth direction(θ/θ0) increased monotonously and approached 0.6 with faster velocity, attributed to its anisotropy in the interface kinetics. Once growth velocity exceeded a threshold, two types of pattern transitions from degenerate to regular dendrites were proposed. One of them exhibited a random and chaotic mode and the other underwent a rotation in growth direction. | Yumin Wang Shuangming Li Zhenpeng Liu Hong Zhong Lei Xu Hui Xing | 2019 | Journal of Materials Science & Technology2019，35，7： | 1 |
| 20 | A transmitting boundary for the numerical simulation of elastic wave propagation 显示文摘 | Liao Zhenpeng Wong H L | 1984 | Soil Dynamics and Earthquake Engineering1984，3，4： | 1 |
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