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| 1 | Solute-homogenization model and its experimental verification in Mg-Gd-based alloys显示文摘Composition homogenization in solid solution is important for industrial alloys. In the present work, a solute homogenization model is proposed based on the chemical short-range-order tendency in Mg-Gdbased alloys. After a calculation using the cluster-plus-glue-atom model, the stable Mg-Gd structural unit is derived, [Gd-Mg12]Mg6, where one solute Gd is nearest-neighbored with twelve Mg atoms to form the characteristic hcp cluster [Gd-Mg12] and this cluster is matched with six Mg glue atoms. Such a local unit is then mixed with [Mg-Mg12]Mg3, the stable unit for pure Mg. Assuming that the Gd-containing units are arranged in fcc-or bcc-like lattice points and the Mg units in their octahedral interstices, three proportions between the two units are obtained, 1:1, 2:3, and 1:3, which constitute three solute homogenization modes. The prevailing Mg-Gd-based alloys are consequently classified into three groups, respectively exemplified by GW103 K(Mg-10 Gd-3 Y-0.4 Zr, wt%), GW83 K(Mg-8 Gd-3 Y-0.4 Zr), and GW63 K(Mg-6 Gd-3 Y-0.4 Zr). Mg-Gd-Y-Zr alloys were designed following the model(where Y and Zr were also added in substitution for Gd) and prepared by permanent-mould casting. According to their mechanical properties,the 1:3 alloy(Mg-5.9 Gd-1.6 Y-0.4 Zr) shows the best comprehensive properties(ultimate tensile strength305 MPa, yield strength 186 MPa, elongation 9.0%) in solution plus ageing state. | Shengnan Qian Chuang Dong Tianyu Liu Ying Qin Qing Wang Yujuan Wu Lidong Gu Jianxin Zou Xiangwen Heng Liming Peng Xiaoqin Zeng | 2018 | Journal of Materials Science & Technology2018，34，7： | 6 |
| 2 | End-to-End Autonomous Driving Through Dueling Double Deep Q-Network显示文摘Recent years have seen the rapid development of autonomous driving systems,which are typically designed in a hierarchical architecture or an end-to-end architecture.The hierarchical architecture is always complicated and hard to design,while the end-to-end architecture is more promising due to its simple structure.This paper puts forward an end-to-end autonomous driving method through a deep reinforcement learning algorithm Dueling Double Deep Q-Network,making it possible for the vehicle to learn end-to-end driving by itself.This paper firstly proposes an architecture for the end-to-end lane-keeping task.Unlike the traditional image-only state space,the presented state space is composed of both camera images and vehicle motion information.Then corresponding dueling neural network structure is introduced,which reduces the variance and improves sampling efficiency.Thirdly,the proposed method is applied to The Open Racing Car Simulator(TORCS)to demonstrate its great performance,where it surpasses human drivers.Finally,the saliency map of the neural network is visualized,which indicates the trained network drives by observing the lane lines.A video for the presented work is available online,http://gffzz6712f30e645c4b03sw9bx5fbnkxck6f5q.ffgz.tsg.suse.edu.cn/76ciJ mIHMD8 or http://gffzz9886e3e54abf46a9sw9bx5fbnkxck6f5q.ffgz.tsg.suse.edu.cn/v_show/id_XNDM4 ODc0M TM4NA==.html. | Baiyu Peng Qi Sun Shengbo Eben Li Dongsuk Kum Yuming Yin Junqing Wei Tianyu Gu | 2021 | Automotive Innovation2021，4，3： | 5 |
| 3 | Effects of Mn addition on the microstructure and mechanical properties of cast Mg-9Al-2Sn(wt.%)alloy显示文摘The microstructure and mechanical properties of cast Mg-9Al-2Sn-xMn(x=0,0.1,0.3 wt.%)alloys in as-cast,solution treated and aged conditions are investigated.The results reveal that Mn addition into Mg-9Al-2Sn alloy leads to the formation of Al8(Mn,Fe)5 phases,the grain refinement and the increase of discontinuous Mg17Al12 precipitates along the grain boundaries.0.1 wt.%Mn addition has an obvious effect on accelerating the aging behavior of Mg-9Al-2Sn alloy at the early aging period up to 8 h,while 0.3 wt.%Mn addition alloy has an comparable aging behavior with the Mn-free alloy.Mn addition has less influence on the fracture behavior of Mg-9Al-2Sn alloy,while the fracture pattern is mainly determined by the thermal conditions.Mg-9Al-2Sn-0.1Mn alloy has the best combination of strength and elongation when aged at 200℃ for 8 h and the yield strength,ultimate tensile strength and elongation are 154 MPa,292MPa and 5%,respectively. | Tianyu Zhu Penghuai Fu Liming Peng Xiaoyu Hu Shouru Zhu Wenjiang Ding | 2014 | Journal of Magnesium and Alloys2014，2，1： | 3 |
| 4 | Hysteresis behaviors of compressor rotating stall with cusp catastrophic model显示文摘Rotating stall is a complex nonlinear dynamic phenomenon which is always characterized by catastrophe and hysteresis in high aerodynamic-loading compressor. Exploring the key contributing factors and characteristic rules of hysteresis is very important for compressor design and flow instability control. In this paper, a novel model method is proposed to analyze the hysteresis behaviors to extend the understanding of compressor rotating stall. The equilibrium states of compressor system under different conditions are first described based on Moore-Greitzer model. Then,through assessing the stability of the equilibrium points by Liapunov's theorem, the ratio of shutoff head to compressor characteristic semi-height is found to affect the stall hysteresis: the size of hysteresis loop will gradually decrease, even disappear with the increase of the ratio. Combing the effects of both the ratio and throttle coefficient, the hysteresis behaviors of compressor stall under multi-parameters can be found to be consistent with the topological properties of cusp catastrophic model by Thom's catastrophe theory. Finally, according to topological invariant rules, from the perspective of potential function, the equilibrium surface equation of compressor system is developed by standard cusp catastrophic model to describe the various hysteresis behaviors of compressor rotating stall along different control routes. | Zhiping LI Peng ZHANG Tianyu PAN Qiushi LI Jian ZHANG | 2018 | Chinese Journal of Aeronautics2018，31，5： | 3 |
| 5 | Intelligent microneedle patch with prolonged local release of hydrogen and magnesium ions for diabetic wound healing显示文摘Diabetes mellitus,an epidemic with a rapidly increasing number of patients,always leads to delayed wound healing associated with consistent pro-inflammatory M1 polarization,decreased angiogenesis and increased reactive oxygen species(ROS)in the microenvironment.Herein,a poly(lactic-co-glycolic acid)(PLGA)-based microneedle patch loaded with magnesium hydride(MgH_(2))(MN-MgH_(2))is manufactured for defeating diabetic wounds.The application of microneedle patch contributes to the transdermal delivery and the prolonged release of MgH_(2) that can generate hydrogen(H_(2))and magnesium ions(Mg^(2+))after reaction with body fluids.The released H_(2) reduces the production of ROS,transforming the pathological microenvironment induced by diabetes mellitus.Meanwhile,the released Mg^(2+)promotes the polarization of pro-healing M2 macrophages.Consequently,cell proliferation and migration are improved,and angiogenesis and tissue regeneration are enhanced.Such intelligent microneedle patch provides a novel way for accelerating wound healing through steadily preserving and releasing of H_(2) and Mg^(2+)locally and sustainably. | Pei Wang Jiayingzi Wu Haiyan Yang Hengke Liu Tianyu Yao Chang Liu Yan Gong Mingsong Wang Guangyu Ji Peng Huang Xiansong Wang | 2023 | Bioactive Materials2023，，6： | 2 |
| 6 | Numerical Modeling of Floating Oil Boom Motions in Wave-Current Coupling Conditions显示文摘Containment booms are commonly used in collecting and containing spilled oil on the sea surface and in protecting specific sea areas against oil slick spreading.In the present study,a numerical model is proposed based on the N-S equations in a mesh frame.The proposed model tracks the outline of the floating boom in motion by using the fractional area/volume obstacle representation technique.The boom motion is then simulated by the technique of general moving object.The simulated results of the rigid oil boom motions are validated against the experimental results.Then,the failure mechanism of the boom is investigated through numerical experiments.Based on the numerical results,the effects of boom parameters and dynamic factors on the oil containment performance are also assessed. | SHI Yang LI Shaowu ZHANG Huaqin PENG Shitao CHEN Hanbao ZHOU Ran MAO Tianyu | 2017 | Journal of Ocean University of China2017，16，4： | 2 |
| 7 | A bio-inspired and self-powered triboelectric tactile sensor for underwater vehicle perception显示文摘Marine mammals relying on tactile perception for hunting are able to achieve a remarkably high prey capture rate without visual or acoustic perception.Here,a self-powered triboelectric palm-like tactile sensor(TPTS)is designed to build a tactile perceptual system for underwater vehicles.It is enabled by a three-dimensional structure that mimics the leathery,granular texture in the palms of sea otters,whose inner neural architecture provides additional clues indicating the importance of tactile information.With the assistance of palm structure and triboelectric nanogenerator technology,the proposed TPTS has the ability to detect and distinguish normal and shear external load in real-time and approximate the external stimulation area,especially not affected by the touch frequency,that is,it can maintain stable performance under high-frequency contact.The results show that the TPTS is a promising tool for integration into grippers mounted on underwater vehicles to complete numerous underwater tasks. | Peng Xu Jianhua Liu Xiangyu Liu Xinyu Wang Jiaxi Zheng Siyuan Wang Tianyu Chen Hao Wang Chuan Wang Xianping Fu Guangming Xie Jin Tao Minyi Xu | 2022 | npj Flexible Electronics2022，6，1： | 1 |
| 8 | Cloning and characterization of human Golgi phosphoprotein 2 gene ( GOLPH2 / GP73 / GOLM1 ) promoter显示文摘 | Yu Gong Qi Long Hongbin Xie Tianyu Zhang Tao Peng | 2012 | Biochemical and Biophysical Research Communications2012，，4： | 1 |
| 9 | Analytical Calculation Method of Reliability Sensitivity Indexes for Distribution Systems Based on Fault Incidence Matrix显示文摘An analytical calculation method for the reliability sensitivity indexes of distribution systems is proposed to explicitly quantify the impact of various influence factors on system reliability.Firstly,the analytical calculation formulas for the reliability indexes of distribution systems are derived based on the fault incidence matrix(FIM).Secondly,the factors that affect system reliability are divided into two categories:quantifiable parameter factors and non-quantifiable network structure factors.The sensitivity indexes for the quantifiable parameter factors are derived using the direct partial derivation of the reliability calculation formulas.The sensitivity indexes for the nonquantifiable network structure factors are derived using the transformation of FIMs.Finally,the accuracy and efficiency of the proposed sensitivity calculation method are verified by applying them to an IEEE 6-bus RBTS system.This paper sums up the factors that influence system reliability in detail and gives the explicit analytical calculation method for the sensitivity of each factor.Repetitive calculation of the reliability index can be avoided during the sensitivity analysis.The bottleneck that affects the reliability level of distribution systems can be identified efficiently,and valuable information and guidance can be provided to enhance the reliability of distribution systems. | Tianyu Zhang Chengshan Wang Fengzhang Luo Peng Li Liangzhong Yao | 2020 | Journal of Modern Power Systems and Clean Energy2020，8，2： | 1 |
| 10 | Changes in Physiological and Biochemical Characteristics of Floral Organ Development in a Soybean Cytoplasmic-nuclear Male Sterile Line显示文摘[Objectives]This study was conducted to explore the mechanism of soybean cytoplasmic-nuclear male sterility.[Methods]With soybean cytoplasmic-nuclear male sterile line JLCMS9 A and its homotype maintainer line JLCMS9 B as experimental materials,the activity of superoxide dismutase(SOD),peroxidase(POD)and catalase(CAT),malondialdehyde(MDA)content,starch content,soluble protein content,soluble sugar content and free proline content in flower buds,alabastrums and mature flowers were determined,and the contents and changes of auxin(IAA),gibberellin(GA3),isopentenyl adenosine(iPA)and abscisic acid(ABA)at the three stages were analyzed.[Results]The activity of SOD and CAT and the contents of MDA and free proline in the sterile line at the flower bud stage were lower than those of the maintainer line,but the opposite was true at the alabastrum stage and the flowering stage,and their values were higher than those of the maintainer line;the POD activity of the sterile line was significantly lower than that of the maintainer line at the flower bud stage,and the opposite was true at the alabastrum stage and the flowering stage,and its values were higher than those of the maintainer line;and the starch content and soluble sugar content of sterile line 9 A showed an overall upward trend,and were significantly lower than those of the maintainer line 9 B at the alabastrum stage and the flowering stage.During the whole development process of floral organs,the content of IAA in sterile line 9 A showed a trend of first increasing and then decreasing,and the content of iPA increased gradually.The contents of hormones in the sterile line were lower than those in the maintainer line.The ratios of IAA/ABA,IAA/GA3,IAA/iPA and ABA/GA3 in the sterile line were significantly different from those in the maintainer line.It is inferred that the abnormal physiological characteristics of floral organ development are related to the cytoplasmic-nuclear male sterility of soybean.The alabastrum stage may be a critical period for the occurrence of abnormal physiological and biochemical indexes in the floral organs of soybean cytoplasmic-nuclear male sterile lines.[Conclusions]This study provides a theoretical basis for the breeding of fine sterile lines of soybean and the research on the mechanism of sterility. | Tianyu CUI Xia CAO Zhigang LI Jiayao SUN Peng LIU Pengnian WANG | 2022 | Agricultural Biotechnology2022，11，1： | 1 |
| 11 | Solidification Microstructure and Mechanical Properties of Cast Magnesium-Aluminum-Tin Alloys显示文摘 | Alan A. Luo Penghuai Fu Liming Peng Xiaoyu Kang Zhenzhen Li Tianyu Zhu | 2012 | Metallurgical and Materials Transactions A2012，，1： | 1 |
| 12 | Promoting the La solution in 2:14:1-type compound:Resultant chemical deviation and microstructural nanoheterogeneity显示文摘RE_(2)Fe_(14)B-based(RE,rare earth)permanent magnets containing abundant and cheap La/Ce have attracted intense attention recently.In comparison with Ce that can fully replace Nd in the 2:14:1 lattice,La substitution for Nd has long been limited at a low level.Here we present that through doping La35 Ce65 alloy with the La/Ce ratio in natural mineral,stable 2:14:1 phase can be maintained at 1273 K within the entire substitution range of[(La_(35)Ce_(65))、(Pr_(20)Nd_(80))_(1-x)]_(2.14)Fe_(14)B(0.6≤x≤1.0,at.%),as verified by composition analysis,microstructural characterization and magnetic measurements.Interestingly,the promoted La solution in 2:14:1 phase induces two unique findings upon coexisting La-Ce-Pr-Nd:i)Compared to Ce that fits well with the nominal concentration,La deviates noticeably from the nominal one;ii)Nanoscale spinodal-decomposition-like phase separation is observed due to different solubilities of La-Ce-Pr-Nd elements in 2:14:1 phase.Above joint effects induce higher Curie temperature than estimation based on the rule of mixture,which delights the prospect of La_(35)Ce_(65)alloy in developing low-cost permanent materials. | Yongsheng Liu Jiaying Jin Tianyu Ma Baixing Peng Xinhua Wang Mi Yan | 2021 | Journal of Materials Science & Technology2021，，3： | 1 |
| 13 | Two Successful Livebirths from Both Hemiuteruses After Laparoscopic Cervical Cerclage in a Uterus Didelphys Patient with Cervical Insufficiency显示文摘Uterus didelphys occurs in~0.4%of females and is found in~11%-20%of all uterus defects.It is a risk factor for cervical insufficiency,consequently contributing to late miscarriage or preterm birth.Thus far,only two prior cases of uterus didelphys accompanied by cervical insufficiency treated through laparoscopic cervical cerclage have been reported;however,livebirth only occurred in one hemiuterus.Herein,we report a case of uterus didelphys in a patient diagnosed with cervical insufficiency.Following the placement of a modified laparoscopic cervical cerclage,the patient had two successful livebirths through both hemiuteruses,respectively,with longer gestation age(ie,>36 weeks).The aim of this case report was to provide useful information for clinical practitioners to make better decisions on the management of cervical insufficiency in patients with uterus didelphys,and identify obstetric complications that clinicians should pay attention to during pregnancy. | Limei Zhang Xue Zhong Yuqing Chen Tianyu Peng Liyun Yu Jian Cai Shuzhong Yao Zilian Wang | 2022 | Maternal-Fetal Medicine2022，4，2： | 1 |
| 14 | A new dynamic hierarchical reputation evaluation scheme for hybrid wireless mesh networks显示文摘 | Yao Yu Yuhuai Peng Yinpeng Yu Tianyu Rao | 2014 | Computers and Electrical Engineering2014，，2： | 1 |
| 15 | Study on effects of thickness on airfoil-stall at low Reynolds numbers by cusp-catastrophic model based on GA(W)-1 airfoil显示文摘The phenomena of an airfoil stall present the behaviors of catastrophe and hysteresis at low Reynolds numbers.Numerical simulation results of two-dimensional airfoil GA(W)-1 show that the width of the hysteresis loop of airfoil stall will gradually decrease and even disappear with the decrease of thickness ratio.These nonlinear characteristics are in accordance with the topological features of the cusp catastrophic model.According to the topological invariant principle,a novel topological mapping method is developed to establish the mapping relationship between cusp catastrophic model and stall characteristics of the airfoil,then the effect of thickness ratio on airfoil stall is successfully described quantitatively by cusp catastrophic model.Further,based on the established topological mapping relationship,combined with the mean flow field of the airfoil stall,potential function approach of cusp catastrophic model is first introduced to interpret the catastrophe and hysteresis of the airfoil stall,and it is found that as the thickness ratio decreases,the system’s maximal potential energy gradually disappears,and the short separation bubble at the leading edge of the airfoil changes to long separation bubble,so the airfoil stall changes from a bistable system to a monostable system. | Zhiping LI Peng ZHANG Tianyu PAN Qiushi LI Jian ZHANG | 2020 | Chinese Journal of Aeronautics2020，33，5： | 1 |
| 16 | A Triboelectric-Based Artificial Whisker for Reactive Obstacle Avoidance and Local Mapping显示文摘Since designing efficient tactile sensors for autonomous robots is still a challenge,this paper proposes a perceptual system based on a bioinspired triboelectric whisker sensor(TWS)that is aimed at reactive obstacle avoidance and local mapping in unknown environments.The proposed TWS is based on a triboelectric nanogenerator(TENG)and mimics the structure of rat whisker follicles.It operates to generate an output voltage via triboelectrification and electrostatic induction between the PTFE pellet and copper films(0.3 mm thickness),where a forced whisker shaft displaces a PTFE pellet(10 mm diameter).With the help of a biologically inspired structural design,the artificial whisker sensor can sense the contact position and approximate the external stimulation area,particularly in a dark environment.To highlight this sensor’s applicability and scalability,we demonstrate different functions,such as controlling LED lights,reactive obstacle avoidance,and local mapping of autonomous surface vehicles.The results show that the proposed TWS can be used as a tactile sensor for reactive obstacle avoidance and local mapping in robotics. | Peng Xu Xinyu Wang Siyuan Wang Tianyu Chen Jianhua Liu Jiaxi Zheng Wenxiang Li Minyi Xu Jin Tao Guangming Xie | 2021 | Research2021，，1： | 0 |
| 17 | Single-cell transcriptomics reveals cell type diversity of human prostate显示文摘Extensive studies have been performed to describe the phenotypic changes occurring during malignant transformation of the prostate.However,the cell types and associated changes that contribute to the development of prostate diseases and cancer remain elusive,largely due to the heterogeneous composition of prostatic tissues.Here,we conduct a comprehensive evaluation of four human prostate tissues by singlecell RNA sequencing(sc RNA-seq)to analyze their cellular compositions.We identify 18 clusters of cell types,each with distinct gene expression profiles and unique features;of these,one cluster of epithelial cells(Ep)is found to be associated with immune function.In addition,we characterize a special cluster of fibroblasts and aberrant signaling changes associated with prostate cancer(PCa).Moreover,we provide insights into the epithelial changes that occur during the cellular senescence and aging.These results expand our understanding of the unique functional associations between the diverse prostatic cell types and the contributions of specific cell clusters to the malignant transformation of prostate tissues and PCa development. | Yang Chen Peng Zhang Jinling Liao Jiwen Cheng Qin Zhang Tianyu Li Haiying Zhang Yonghua Jiang Fangxing Zhang Yanyu Zeng Linjian Mo Haibiao Yan Deyun Liu Qinyun Zhang Chunlin Zou Gong-Hong Wei Zengnan Mo | 2022 | Journal of Genetics and Genomics2022，49，11： | 0 |
| 18 | Characteristics of Nutrients Removal under Viscous Sludge Bulking Treating Synthetic Wastewater显示文摘Viscous sludge bulking is a rare phenomenon in activated sludge process.The performances of nutrients removal were investigated with normal sludge and viscous bulking sludge.The results showed that when COD loading and C/N ratio were around 0.13 mg COD/(mg MLSS·d)and 7.67,the effect of viscous sludge bulking on the maximum specific oxidation rates of NH_(4)^(+)⁃N was very little,while the maximum specific oxidation rates of NO_(2)^(-)⁃N decreased from 24.69 mg/(g·h)to 1.20 mg/(g·h).Compared with normal sludge,viscous bulking sludge had bigger particle size and more extracellular polymeric substances(EPS).The mass transfer resistance in sludge flocs might be the main cause of the difference in NO-2⁃N oxidation rates.Therefore,this study demonstrates that viscous sludge bulking is beneficial to enhance simultaneous nitrification and denitrification(SND),and excessive EPS will exhibit storage function during phosphorus removal process. | Zhaoxu Peng Zhongyuan Zhao Tianyu Lou Kun Jiang Lei Li | 2021 | Journal of Harbin Institute of Technology(New Series)2021，28，6： | 0 |
| 19 | Data Analyses and Parallel Optimization of the Regional Marine Ecological Model显示文摘Under the joint influence of high-intensity human activities and cli-mate change,the coastal ecological environment is deteriorating,and the ecologi-cal environment security and the sustainable development of the marine economy are seriously threatened.Therefore,it is of great significance to establish a high-resolution ecological environment operational forecasting system.To meet the run time requirements of the ecological operational forecasting system,a vari-ety of parallel optimization methods were proposed to improve the operation efficiency of the model.First,based on the National Marine Environmental Fore-casting Center’s Lenovo cluster,the ROMS benchmark experiment was expanded to the 4000 Processes scale.A good speedup was obtained by the experiment.The ROMS model was analysed with strong scalability.Second,in the hydrodynamic-ecological simulation experiment of the Bohai Sea-Yellow Sea-East China Sea,by optimizing Vector,InfiniBand,and Parallel I/O,the performance of the model can be improved by 270%while maintaining the same computing resources.That computing resources were more reasonably used lay the foundation for the operational forecast. | Yanqiang Wang Jingjing Zheng Tianyu Zhang Peng Liang Bo Lin | 2023 | 国际计算机前沿大会会议论文集2023，，2： | 0 |
| 20 | LDL receptor-related protein 1 (LRP1),a novel target for opening the blood-labyrinth barrier(BLB)显示文摘Inner ear disorders are a cluster of diseases that cause hearing loss in more than 1.5 billion people worldwide.However,the presence of the blood-labyrinth barrier(BLB)on the surface of the inner ear capillaries greatly hinders the effectiveness of systemic drugs for prevention and intervention due to the low permeability,which restricts the entry of most drug compounds from the bloodstream into the inner ear tissue.Here,we report the finding of a novel receptor,low-density lipoprotein receptor-related protein 1(LRP1),that is expressed on the BLB,as a potential target for shuttling therapeutics across this barrier.As a proof-ofconcept,we developed an LRP1-binding peptide,IETP2,and covalently conjugated a series of model small-molecule compounds to it,including potential drugs and imaging agents.All compounds were successfully delivered into the inner ear and inner ear lymph,indicating that targeting the receptor LRP1 is a promising strategy to enhance the permeability of the BLB.The discovery of the receptor LRP1 will illuminate developing strategies for crossing the BLB and for improving systemic drug delivery for inner ear disorders. | Xi Shi Zihao Wang Wei Ren Long Chen Cong Xu Menghua Li Shiyong Fan Yuru Xu Mengbing Chen Fanjun Zheng Wenyuan Zhang Xinbo Zhou Yue Zhang Shiwei Qiu Liyuan Wu Peng Zhou Xinze Lv Tianyu Cui Yuehua Qiao Hui Zhao Weiwei Guo Wei Chen Song Li Wu Zhong Jian Lin Shiming Yang | 2022 | Signal Transduction and Targeted Therapy2022，7，7： | 0 |
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