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| 1 | Effect of electromagnetic stirring in mold on the macroscopic quality of high carbon steel billet显示文摘An industrial plant trial for optimizing the process parameters in a round billet continuous casting mold with electromagnetic stirring(M-EMS) was performed,in which the influences of stirring parameters with M-EMS on the solidification macrostructure of high carbon steel were investigated.The results show that the billet quality is not well controlled under the condition of working current and frequency with EMS,in which the subsurface crack of grade 1.0-2.0 ups to 38.09%,the central pipe of grade 1.0-1.5 reaches to 14.28%,and the central porosity of grade 1.5 is 14.29%.The parameters of current 260 A and frequency 8 Hz as the final optimum scheme has a remarkable effect for improving the macroscopic quality of billet,in which the subsurface crack,central pipe and skin blowhole are all disappeared,and the central porosity and carbon segregation are also well improved. | Haiqi YU Miaoyong ZHU | 2009 | Acta Metallurgica Sinica(English Letters)2009，22，6： | 9 |
| 2 | Differential game strategy in three-player evasion and pursuit scenarios显示文摘A conflict of three players, including an attacker, a defender, and a target with bounded control is discussed based on the differential game theories in which the target and the defender use an optimal pursuit strategy. The current approach chooses the miss distance as the outcome of the conflict. Different optimal guidance laws are investigated, and feasible conditions are analyzed for the attacker to accomplish an attacking task. For some given conditions, the attacker cannot intercept the target by only using a one-to-one optimal pursuit guidance law; thus, a guidance law for the attacker to reach a critical safe value is investigated.Specifically, the guidance law is divided into two parts. Before the engagement time between the defender and the attacker, the attacker uses this derived guidance law to guarantee that the evasion distance from the defender is safe, and that the zero-effort-miss(ZEM) distance between the attacker and the target is the smallest.After that engagement time, the attacker uses the optimal one-toone guidance law to accomplish the pursuit task. The advantages and limited conditions of these derived guidance laws are also investigated by using nonlinear simulations. | SUN Qilong QI Naiming XIAO Longxu LIN Haiqi | 2018 | Journal of Systems Engineering and Electronics2018，29，2： | 9 |
| 3 | A Review on Self-Recovery Regulation(SR)Technique for Unbalance Vibration of High-End Equipment显示文摘The high-end equipment represented by high-end machine tools and aero-engines is the core component of the national intelligent manufacturing plan,and the mass unbalance is the main reason for its excessive vibration,that seriously impacts the operation efficiency and running life of the equipment.In order to change the traditional way that the fault of equipment can only be repaired by human,the self-recovery mechanism of human and animal are given to the equipment in this paper,which forms the self-recovery regulation(SR)system for unbalance vibration of high-end equipment.The system can online generate the self-recovery force to restrain the unbalance vibration of the equipment in operation,which is an important direction for the development of the equipment to the advanced intelligent stage.Based on the basic principles of SR technique,the typical engineering application cases of this technique in the field of aeroengine and high-end machine tools are introduced,and four related studies promoting the development of this technique are summarized and analyzed in turn.It includes feature extraction,imbalance location,regulation method and balancing actuator.Self-recovery Regulation(SR)Technique is an important way to realize intelligent manufacturing and intelligent maintenance.Relevant research can lay a technical foundation for the development of high-end equipment with self-health function. | Xin Pan Jiaqiao Lu Jiaji Huo Jinji Gao Haiqi Wu | 2020 | Chinese Journal of Mechanical Engineering2020，33，6： | 7 |
| 4 | Research on fault detection method for heat pump air conditioning system under cold weather显示文摘Building energy consumption accounts for nearly 40% of global energy consumption, HVAC(Heating, Ventilating,and Air Conditioning) systems are the major building energy consumers, and as one type of HVAC systems, the heat pump air conditioning system, which is more energy-efficient compared to the traditional air conditioning system, is being more widely used to save energy. However, in northern China, extreme climatic conditions increase the cooling and heating load of the heat pump air conditioning system and accelerate the aging of the equipment, and the sensor may detect drifted parameters owing to climate change. This non-linear drifted parameter increases the false alarm rate of the fault detection and the need for unnecessary troubleshooting.In order to overcome the impact of the device aging and the drifted parameter, a Kalman filter and SPC(statistical process control) fault detection method are introduced in this paper. In this method, the model parameter and its standard variance can be estimated by Kalman filter based on the gray model and the real-time data of the air conditioning system. Further, by using SPC to construct the dynamic control limits, false alarm rate is reduced.And this paper mainly focuses on the cold machine failure in the component failure and its soft fault detection.This approach has been tested on a simulation model of the 'Sino-German Energy Conservation Demonstration Center' building heat pump air-conditioning system in Shenyang, China, and the results show that the Kalman filter and SPC fault detection method is simple and highly efficient with a low false alarm rate, and it can deal with the difficulties caused by the extreme environment and the non-linear influence of the parameters, and what's more, it provides a good foundation for dynamic fault diagnosis and fault prediction analysis. | Liangliang Sun Jianghua Wu Haiqi Jia Xuebin Liu | 2017 | Chinese Journal of Chemical Engineering2017，25，12： | 5 |
| 5 | Dynamic changes of phosphatidylinositol and phosphatidylinositol 4-phosphate levels modulate H^(+)-ATPase and Na^(+)/H^(+) antiporter activities to maintain ion homeostasis in Arabidopsis under salt stress显示文摘Plant metabolites are dynamically modified and distributed in response to environmental changes.How-ever,it is poorly understood how metabolic change functions in plant stress responses.Maintaining ion ho-meostasis under salt stress requires coordinated activation of two types of central regulators:plasma membrane(PM)H^(+)-ATPase and Na^(+)/H^(+) antiporter.In this study,we used a bioassay-guided isolation approach to identify endogenous small molecules that affect PM H^(+)-ATPase and Na^(+)/H^(+) antiporter activities and identified phosphatidylinositol(PI),which inhibits PM H^(+)-ATPase activity under non-stress conditions in Arabidopsis by directly binding to the C terminus of the PM H^(+)-ATPase AHA2.Under salt stress,the phosphatidylinositol 4-phosphate-to-phosphatidylinositol(PI4P-to-PI)ratio increased,and PI4P bound and activated the PM Na^(+)/H^(+) antiporter.PI prefers binding to the inactive form of PM H^(+)-ATPase,while PI4P tends to bind to the active form of the Na^(+)/H^(+) antiporter.Consistent with this,pis1 mutants,with reduced levels of PI,displayed increased PM H^(+)-ATPase activity and salt stress toler-ance,while the pi4kβ1 mutant,with reduced levels of PI4P,displayed reduced PM Na^(+)/H^(+) antiporter activity and salt stress tolerance.Collectively,our results reveal that the dynamic change between PI and PI4P in response to salt stress in Arabidopsis is crucial for maintaining ion homeostasis to protect plants from un-favorable environmental conditions. | Yongqing Yang Xiuli Han Liang Ma Yujiao Wu Xiao Liu Haiqi Fu Guoyong Liu Xiaoguang Lei Yan Guo | 2021 | Molecular Plant2021，14，12： | 4 |
| 6 | CPPU may induce gibberellin-independent parthenocarpy associated with PbRR9 in‘Dangshansu’pear显示文摘Parthenocarpy is a valuable trait in self-incompatible plants,such as pear.N-(2-chloro-4-pyridyl)-N’-phenylurea(CPPU),a synthetic cytokinin analog,can induce parthenocarpy in pear(Pyrus spp.),but the mechanism of induction is unclear.To investigate the role of gibberellin in CPPU-induced parthenocarpy in pear,CPPU supplemented with paclobutrazol(PAC)was sprayed onto‘Dangshansu’pear.We found that the fruit set rate of pear treated with CPPU supplemented with PAC was identical to that in a CPPU-alone treatment group.In regard to cell development,CPPU mainly promoted hypanthium cell division and expansion,and PAC application had no influence on CPPU-induced cell development.RNA sequencing revealed that gibberellin 20 oxidase and gibberellin 3 oxidase genes were not differentially expressed following CPPU treatment.According to the analysis of fruit phytohormone content,the CPPU treatments did not induce gibberellin biosynthesis.These results suggest that CPPU-induced parthenocarpy may be gibberellin independent in‘Dangshansu’pear.After CPPU treatment,the indole acetic acid(IAA)content in fruit was significantly increased,and the abscisic acid(ABA)content was significantly decreased.Similarly,RNA sequencing revealed that many genes involved in the auxin and ABA pathways were significantly differentially expressed in the CPPU treatment groups;among them,indole-3-pyruvate monooxygenase(YUCCA)was significantly upregulated and 9-cis-epoxycarotenoid dioxygenase(NCED)was significantly downregulated.IAA and ABA may thus play important roles in CPPU-induced parthenocarpy.PbTwo-component response regulator9(PbRR9),PbYUCCA4,and PbNCED6 were then selected to further elucidate the mechanism of CPPU-induced parthenocarpy.A yeast one-hybrid assay indicated that PbRR9 can combine with the PbYUCCA4 and PbNCED6 promoters.Dual luciferase assays revealed that PbRR9 can promote and repress the activities of the PbYUCCA4 and PbNCED6 promoters,respectively.After the transient expression of PbRR9 in fruits,PbYUCCA4 expression was significantly upregulated,and PbNCED6 expression was significantly downregulated.This study uncovered a CPPU-induced parthenocarpy mechanism that is different from that in tomato.CPPU may upregulate PbYUCCA4 and downregulate PbNCED6 by upregulating PbRR9,thereby increasing IAA content and decreasing ABA content to ultimately induce parthenocarpy in‘Dangshansu’pear.However,because only a single time point was used and because‘botanical’and‘accessory’fruits have different structures,this conclusion is still preliminary. | Liu Cong Ting Wu Hanting Liu Huibin Wang Haiqi Zhang Guangping Zhao Yao Wen Qianrong Shi Lingfei Xu Zhigang Wang | 2020 | Horticulture Research2020，7，1： | 4 |
| 7 | A prototype RF power source for CSNS/RCS显示文摘A prototype RF power source has been built to supply high RF power to a ferrite-loaded cavity, which is a part of R&D of the Rapid Cycling Synchrotron of China Spallation Neutron Source (CSNS/RCS). A direct fast RF feedback amplifier, a 4:1 impedance transformer and auto tuning grid were locally located to compensate the heavy beam loading of CSNS/RCS. Design and commissioning of the RF power source is discussed here, also with some advice on system improvement. | WeiLing Huang (1) Hong Sun (1) HaiQi Zhao (2) Yu Liu (2) YanDong Li (2) ZhiGuang Qiao (2) Xiao Li (1) ChunLin Zhang (1) | 2011 | Science China(Physics,Mechanics & Astronomy)2011，54，S2： | 3 |
| 8 | Long Short Term Memory Networks Based Anomaly Detection for KPIs显示文摘In real-world many internet-based service companies need to closely monitor large amounts of data in order to ensure stable operation of their business.However,anomaly detection for these data with various patterns and data quality has been a great challenge,especially without labels.In this paper,we adopt an anomaly detection algorithm based on Long Short-Term Memory(LSTM)Network in terms of reconstructing KPIs and predicting KPIs.They use the reconstruction error and prediction error respectively as the criteria for judging anomalies,and we test our method with real data from a company in the insurance industry and achieved good performance. | Haiqi Zhu Fanzhi Meng Seungmin Rho Mohan Li Jianyu Wang Shaohui Liu Feng Jiang | 2019 | Computers, Materials & Continua2019，，8： | 2 |
| 9 | Hilbert-Huang transform and marginal spectrum for detection and diagnosis of localized defects in roller bearings显示文摘 | Hui Li Yuping Zhang Haiqi Zheng | 2009 | Journal of Mechanical Science and Technology2009，，2： | 2 |
| 10 | Optimal Design of Novel Electromagnetic-Ring Active Balancing Actuator with Radial Excitation显示文摘Imbalance vibration is a typical failure mode of rotational machines and has significant negative effects on the efficiency,accuracy,and service life of equipment.To automatically reduce the imbalance vibration during the operational process,different types of active balancing actuators have been designed and widely applied in actual production.However,the existing electromagnetic-ring active balancing actuator is designed based on an axial excitation structure which can cause structural instability and has low electromagnetic driving efficiency.In this paper,a novel radial excitation structure and the working principle of an electromagnetic-ring active balancing actuator with a combined driving strategy are presented in detail.Then,based on a finite element model,the performance parameters of the actuator are analyzed,and reasonable design parameters are obtained.Self-locking torque measurements and comparative static and dynamic experiments are performed to validate the self-locking torque and driving efficiency of the actuator.The results indicate that this novel active balancing actuator has sufficient self-locking torque,achieves normal step rotation at 2000 r/min,and reduces the driving voltage by 12.5%.The proposed novel balancing actuator using radial excitation and a combination of permanent magnets and soft-iron blocks has improved electromagnetic efficiency and a more stable and compact structure. | Xin Pan Xiaotian He Haiqi Wu Chuanlong Ju Zhinong Jiang Jinji Gao | 2021 | Chinese Journal of Mechanical Engineering2021，34，1： | 2 |
| 11 | Coupling of ultrasmall and small CoxP nanoparticles confined in porous SiO2 matrix for a robust oxygen evolution reaction显示文摘Rational design of electrocatalysts is important for a sustainable oxygen evolution reaction(OER).It is still a huge challenge to engineer active sites in multi-sizes and multi-components simultaneously.Here,a series of CoxP nanoparticles(NPs)confined in an SiO2matrix(SiO2/CoxP)is designed and synthesized as OER electrocatalysts.The phosphorization of the hydrolyzed Co-phyllosilicate promotes the formation of ultrasmall and small Co2P and CoP.These are firmly confined in the SiO2matrix.The coupling of multi-size and multi-component CoxP catalysts can regulate reaction kinetics and electron transfer ability,enrich the active sites,and eventually promote the intrinsic OER activity.The SiO2matrix provides abundant porous structure and oxygen vacancies,and these facilitate the exposure of active sites and improve conductivity.Because of the synergy and interplay of multisized/component CoxP NPs and the porous SiO2matrix,the unique SiO2/CoxP heterostructure exhibits low overpotential(293 m V@10 mA cm-2),and robust stability(decay 12 mV after 5000 CV cycles,97.4%of initial current after 100 h chronoamperometric)for the OER process,exceeding many advanced metal phosphide electrocatalysts.This work provides a novel tactic to design low-cost,simple,and highly efficient OER electrocatalysts. | Xiaojun Zeng Haiqi Zhang Xiaofeng Zhang Qingqing Zhang Yunxia Chen Ronghai Yu Martin Moskovits | 2022 | Nano Materials Science2022，4，4： | 2 |
| 12 | Effect of aluminum borate whisker coating on interface and mechanical properties of 6061Al matrix composites显示文摘Copper coating was deposited on the surface of aluminum borate whisker by an electroless plating method.This method was used to modify the interfacial property of squeeze-casting aluminum borate whisker reinforced 6061Al matrix composite.Interface observation indicates that the spinel reaction(MgAl2O4) is hindered by the copper coating,and the difference in interfacial reaction degree affects the tensile property and aging behavior of the composite.For the composite with less spinel reaction(MgAl2O4),its peak-aging process are postponed due to less depletion of magnesium.On the fracture surface of copper-coated composite dimples and fractures of whiskers are more,but on the fracture surface of uncoated composite pull-out of whiskers are more than that on the coated one.In uncoated composite the fracture generally originates from the near-interface-region. | GAO Haiqi,WANG Lidong and FEI Weidong School of Materials Science & Engineering,Harbin Institute of Technology,Harbin 150001,China | 2007 | Rare Metals2007，26，S1： | 2 |
| 13 | Application of Hermitian Wavelet to Crack Fault Detection in Gearbox显示文摘 | Li Hui Zhang Yuping Zheng Haiqi | 2011 | Mechanical Systems and Signal Pro- cessing2011，25，4： | 1 |
| 14 | Flagellin and lipopolysaccharide up-regulation of IL-6 and CXCLi2 gene expression in chicken heterophils is mediated by ERK1/2- dependent activation of AP-1 and NF-{kappa} B signaling pathways显示文摘 | Kogut MH Genovese K J Haiqi He | 2008 | Innate Immun2008，14，4： | 1 |
| 15 | Hilbert-Huang transform and marginal spectrum for detection and di- agnosis of localized defects in roller bearings显示文摘 | Li Hui Zhang Yuping Zheng Haiqi | 2009 | Journal of Mechanical Science and Technology2009，23，2： | 1 |
| 16 | Wigner-ville distribution based on EMD for faults diagnosis of bearing显示文摘 | Li Hui Zheng Haiqi Tang Liwei | | 0，，： | 1 |
| 17 | Wigner-Ville Distribution Based on EMD for Faults Diagnosis of Bearing显示文摘 | Li Hui Zheng Haiqi Tang Liwei | 2006 | Lecture Notes in Computer Science2006，4223，： | 1 |
| 18 | Hilbert- Huang Transform and Marginal Spectrum for Deteetion and Diagnosis of Localized Defects in Roller Bearings显示文摘 | Li Hui Zhang Yuping Zheng Haiqi | 2009 | Journal of Mechanical Science and Technology2009，23，2： | 1 |
| 19 | Scientific research collaboration in China显示文摘 | Zhang Haiqi Guo Hong | 1997 | Scientometrics1997，38，2： | 1 |
| 20 | Expression of the avian-specific toll-like receptor 15 in chicken heterophils is mediated by Gram-negative and Gram-positive bacteria, but not TLR agonists显示文摘 | Jessica R. Nerren Haiqi He Kenneth Genovese Michael H. Kogut | 2010 | Veterinary Immunology and Immunopathology2010，，1： | 1 |
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