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| 1 | Design,modeling and experiments of broadband tristable galloping piezoelectric energy harvester显示文摘Galloping based piezoelectric energy harvester is a kind of micro-environmental energy harvesting device based on flowinduced vibrations.A novel tristable galloping-based piezoelectric energy harvester is constructed by introducing a nonlinear magnetic force on the traditional galloping-based piezoelectric energy harvester.Based on Euler-Bernoulli beam theory and Kirchhoff’s law,the corresponding aero-electromechanical model is proposed and validated by a series of wind tunnel experiments.The parametric study is performed to analyse the response of the tristable galloping-based piezoelectric energy harvester.Numerical results show that comparing with the galloping-based piezoelectric energy harvester,the mechanism of the tristable galloping-based piezoelectric energy harvester is more complex.With the increase of a wind speed,the vibration of the bluff body passes through three branches:intra-well oscillations,chaotic oscillations,and inter-well oscillations.The threshold wind speed of the presented harvester for efficiently harvesting energy is 1.0 m/s,which is decreased by 33% compared with the galloping-based piezoelectric energy harvester.The maximum output power of the presented harvester is 0.73 mW at 7.0 m/s wind speed,which is increased by 35.3%.Compared with the traditional galloping-based piezoelectric energy harvester,the presented tristable galloping-based piezoelectric energy harvester has a better energy harvesting performance from flow-induced vibrations. | Junlei Wang Linfeng Geng Shengxi Zhou Zhien Zhang Zhihui Lai Daniil Yurchenko | 2020 | Acta Mechanica Sinica2020，36，3： | 9 |
| 2 | Integrated Chinese-western therapy versus western therapy alone on survival rate in patients with non-small-cell lung cancer at middlelate stage显示文摘OBJECTIVE: To compare the effects of integrated Chinese-Western therapy versus Western therapy alone on the survival rate of patients with non-small-cell lung cancer (NSCLC) at middle-late stage and to evaluate prognostic factors. METHODS: We selected 98 inpatients with middle-late stage NSCLC diagnosed from March 2009 to March 2011 and randomly divided them into two groups, with 49 cases in each group, and the clinical data were analyzed retrospectively.The control group was treated by the combined methods of Western Medicine, including chemotherapy, supportive treatment and symptomatic treatment. The observation group was treated by injection and prescriptions of Chinese medicine based on Traditional Chinese Medicine syndrome differentiation and by the same combined methods of western treatment used in the control group. After treatment, the survival rates of the patients were compared by the stage of cancer and evaluation of 24 prognostic factors analyzed by a Cox regressionmodel, and the clinical data were statistically analyzed. RESULTS: The survival rates of all patients were over 90.0% at 1 and 3 months after treatment with no significant differences between the two groups (P>0.05); In the observation group the survival rates at 6 months and 1 year were 93.4% and 42.8%, respectively, being superior to 85.6% and 18.3% in the control group (P<0.05). The median survival time in the observation group was superior to the control group (P<0.05); The effects of 24 prognostic factors were significantly better in the observation group than in the control group (P<0.05). CONCLUSION: Integrated Chinese-western therapy can significantly improve the survival rate in patients with middle-late stage NSCLC and improve prognostic factors compared with western therapy alone. | Guoqiang Lin Yingqiu Li Shengxi Chen Haihe Jiang | 2013 | Journal of Traditional Chinese Medicine2013，33，4： | 7 |
| 3 | Response regimes of nonlinear energy harvesters with a resistorinductor resonant circuit by complexification-averaging method显示文摘In this paper, the steady-state response regimes of nonlinear energy harvesters with a resistor-inductor resonant circuit are theoretically investigated. The complexification averaging(CA) method is used to theoretically analyze the energy harvesting performance and reduce the motion equations into a set of first-order differential equations. The amplitudes and phases of both the response displacement and the output voltage are derived, and the corresponding stability conditions are determined. The response regimes are studied with the variation of nonlinear stiffness coefficients and coupling parameters, which are verified by the time domain analysis. The frequency island phenomenon is found and analyzed. Additionally, the backbone curve for deducing the extreme vibration frequency and amplitude is derived. Simultaneously, the analytical expressions of the switching points(critical amplitude and frequency) to identify the hardening and softening properties are established. Accordingly, a criterion is given to determine the occurrence of the jump phenomenon, and its effectiveness is verified. Overall, this paper presents an in-depth theoretical analysis of nonlinear energy harvesters with a resistor-inductor resonant circuit. It presents the theoretical framework and guidance for more extensive evaluations and understanding the theoretical analysis of nonlinear energy harvesters with external circuits. | HUANG DongMei CHEN JiaYi ZHOU ShengXi FANG XueLai LI Wei | 2021 | Science China(Technological Sciences)2021，64，6： | 6 |
| 4 | On the stochastic response regimes of a tristable viscoelastic isolation system under delayed feedback control显示文摘In this paper,a tristable viscoelastic isolation system with stochastic excitation under both displacement and velocity delayed feedback control is considered.Firstly,the theoretical expressions of the mean first-passage time(MFPT)to measure the activated escape between different potential wells are derived.Induced nonlinear transition dynamics due to the noise and time delays are mainly discussed.It is found that the delay-induced behaviours affect the transitions between the equilibrium points of the system,the corresponding phenomenon of the delay-enhanced stability is observed.In this respect,the existence of the maxima of the MFPT1 and the MFPT2 is found in one period.Meanwhile,the MFPT1 and the MFPT2 show the monotonic behaviour with the increase of the noise intensity.Additionally,the stationary probability density of the amplitude and the stationary mean amplitude are derived.The influence regimes of the system parameters on both stationary probability density of the amplitude and the stationary mean amplitude are explored.This paper establishes the relationship between system parameters and dynamical properties of the tristable viscoelastic isolation system.This provides a fundamental guidance for the optimization of the viscoelastic isolation by utilizing the technique of delayed feedback control. | HUANG DongMei ZHOU ShengXi LI Wei LITAK Grzegorz | 2021 | Science China(Technological Sciences)2021，64，4： | 3 |
| 5 | Improving the off-resonance energy harvesting performance using dynamic magnetic preloading显示文摘Piezoelectric stack transducers in d33 mode have a much higher mechanical-to-electric energy conversion efficiency compared with d3l mode piezoelectric harvesters.However,multilayered piezoelectric stacks usually operate in off-resonance due to the higher stiffness and thereby have a lower power output under low-frequency excitations.This paper proposes to apply the dynamic magnetic pre-loading to a piezoelectric stack transducer to significantly increase the power output.The energy harvesting system consists of a multilayered piezoelectric stack with a compliant force amplification frame,a proof mass,and two magnets configured in attraction.The static force-displacement relationship of the magnets is identified from experiments and extended to a dynamic model capable of characterizing the dynamic magnetic interaction.An electromechanical model is developed based on the theoretical derivation and the experimentally identified parameters to predict the voltage outputs under different resistive loads.Approximate analytical solutions are derived by using the harmonic balance method and show good agreements with the numerical and experimental results.The performance of the system is examined and compared with that of the harvester without magnetic pre-loading.The influences of the distance between the two magnets and the electrical resistive loads on the power output are investigated.Results indicate the energy harvesting system with magnetic pre-loading can produce over thousand times more power than the system without magnetic pre-loading at the base excitation of 3 Hz and 0.5 m/s……2,far below the resonance at 243 Hz. | Feng Qian Shengxi Zhou Lei Zuo | 2020 | Acta Mechanica Sinica2020，36，3： | 2 |
| 6 | Simultaneous recovery of rare earth elements and phosphorus from phosphate rock by phosphoric acid leaching and selective precipitation:Towards green process显示文摘Phosphate rock has been considered as one of the potential promising resources for rare earth elements(REEs). But the cost issues and the technical challenges caused by the low content of REEs in ores did hinder the further development of REEs recovery technologies. In order to explore a green process for the recovery of REEs from phosphate rock, this study investigates the effects of phosphoric acid concentration, liquid-to-solid ratio(L/S ratio), leaching time and temperature on the leaching efficiencies of the major components from phosphate rock. A REEs recovery of 94.3% and a phosphorus recovery of 95.3%are achieved under the optimal conditions of attacking phosphate rock using 30%P_2 O_5 acid with an L/S ratio of 10:1 and a stirring speed of 250 r/min at 25 ℃ for 4 h. Then,the selective precipitation of REEs with 81.3% REEs recovery is realized by heating up the leaching solution from 25 to 90 ℃ and keeping for4 h. Thereafter, more than 95% phosphoric acid is recovered by H_2 SO_4 and high purity gypsum, more than95% CaSO_4(tested by XRF), is also produced at the same time. Ultimately, a green process that leaches phosphate rock with H_3 PO_4, selectively precipitates REEs from leaching solution by heating up, recovers H_3 PO_4 with H2 SO4 is proposed. Compared with REE recovery in traditional processes, this process owns the merits of simple operation, energy saving and minimum wastes. | Shengxi Wu Longsheng Zhao Liangshi Wang Xiaowei Huang Yunhan Zhang Zongyu Feng Dali Cui | 2019 | Journal of Rare Earths2019，37，6： | 2 |
| 7 | Roles of Chlorogenic Acid on Regulating Glucose and Lipids Metabolism: A Review显示文摘 | Shengxi Meng Jianmei Cao Qin Feng Jinghua Peng Yiyang Hu Yong-Qing Yang | 2013 | Evidence-Based Complementary and Alternative Medicine2013，，： | 2 |
| 8 | REGIONAL ELEMENT ABUNDANCES OFCONTINENTAL CRUSTOBODIES IN CHINA | Li Tong Yuan Huaiyu Wu Shengxi and Cheng Xianfu (Dept. of Geology, University of Science and Technology Beijing, Beijing 100083, China) | 1999 | Geotectonica et Metallogenia1999，23，2： | 1 |
| 9 | Preconditioning improves myocardial preservation in patients undergoing open heart operations显示文摘 | Erxiong Lu Shengxi Cheng Guihu LL | 1997 | Ann Thorac Surg1997，64，： | 1 |
| 10 | A review of nonlinear piezoelectric energy harvesting interface circuits in discrete components显示文摘Piezoelectric energy harvesting is considered as an ideal power resource for low-power consumption gadgets in vibrational environments.The energy extraction efficiency depends highly on the interface circuit,and should be highly improved to meet the power requirements.The nonlinear interface circuits in discrete components have been extensively explored and developed with the advantages of easy implementation,stable operation,high efficiency,and low cost.This paper reviews the state-of-the-art progress of nonlinear piezoelectric energy harvesting interface circuits in discrete components.First,the working principles and the advantages/disadvantages of four classical interface circuits are described.Then,the improved circuits based on the four typical circuits and other types of circuits are introduced in detail,and the advantages/disadvantages,output power,efficiency,energy consumption,and practicability of these circuits are analyzed.Finally,the future development trends of nonlinear piezoelectric energy harvesting circuits,e.g.,self-powered extraction,low-power consumption,and broadband characteristic,are predicted. | Bin ZHANG Hongsheng LIU Shengxi ZHOU Jun GAO | 2022 | Applied Mathematics and Mechanics(English Edition)2022，43，7： | 1 |
| 11 | Aryl hydrocarbon receptor agonists directly activate estrogen receptor α in MCF-7 breast cancer cells显示文摘 | Shengxi Liu Maen Abdelrahim Shaheen Khan Eric Ariazi V. Craig Jordan Stephen Safe | 2006 | Biological Chemistry2006，，9： | 1 |
| 12 | 原发性肝癌超声造影特征及其与病理相关性的研究(英文)显示文摘Objective:The aim of this study was to evaluate the value of contrast-enhanced ultrasound(CEUS) for blood perfusion of primary liver cancer(PHC) and investigate the correlation between microvascular architecture of PHC and pathological differentiation.Methods:Two hundred and seventy-eight patients with 329 PHC lesions were examined by CEUS and analysised the contrast enhancement pattern and correlation with pathology.Results:1.CEUS patterns of PHC:71.7%(236/329) showed 'swift enhancement in the arterial phase and swift expurgation in the portal phase',13.4%(44/329) for as 'swift enhancement and slow expurgation',7.3%(24/329) as 'swift enhancement and simultaneity expurgation',4.3%(14/329) for the 'slow enhancement and swift expurgation',2.1%(7/329) as 'slow enhancement and expurgation',1.2%(4/329) as 'not fast forward'.2.90.3%(297/329) of PHC lesions were hypervascular liver cancer and 9.7%(32/329) were hypovascular.Hepatocellular carcinoma(HCC) were hypervascular lesions and intrahepatic cholangiocarcinoma(ICC) were hypovascular lesions.3.PHC size had a significant difference on the contrast media purfusion pattern(P < 0.05),but not on the contrast media expurgation pattern.4.The accuracy of PHC by CEUS were 97.3% and compared to pathology,9 lesions of PHC were misdiagnosed.Conclusion:CEUS can show the different blood perfusion characteristics of PHC with closely related to pathological differentiation,which be valuable to diagnose liver cancer. | Qin Si Xiaoli Qian Shengxi Huang Xiaoping Lv Wei Tong Yanli Huang Jian Chen | 2011 | The Chinese-German Journal of Clinical Oncology2011，10，9： | 1 |
| 13 | Recent progress on flutter‐based wind energy harvesting显示文摘Wind energy harvesting technology can convert wind energy into electric energy to supply power for microelectronic devices.It has great potential in many specific applications and environments,such as remote areas,sea surfaces,mountains,and so on.Over the past few years,flutter‐based wind energy harvesting,which generates electric energy based on the limit cycle oscillation created by structural aeroelastic instability,has received increasing attention,and as a consequence,different energy harvesting structures,theories,and methods have been proposed.In this paper,three types of flutter‐based energy harvesters(FEHs)including airfoil‐based,flat plate‐based,and flexible body‐based FEHs are reviewed,and related concepts and theoretical models are introduced.The recent progress in FEH performance enhancement methods is classified into structural improvement and optimization,the introduction of nonlinearity,and hybrid structures and mechanisms.Finally,the main FEH challenges are summarized,and future research directions are discussed. | Zhiyuan Li Shengxi Zhou Zhichun Yang | 2022 | International Journal of Mechanical System Dynamics2022，2，1： | 1 |
| 14 | Effect of propofol on the levels of neurotransmitters in normal human brain: A magnetic resonance spectroscopy study显示文摘 | Hui Zhang Wei Wang Wei Gao Yali Ge Jinsong Zhang Shengxi Wu Lixian Xu | 2009 | Neuroscience Letters2009，，3： | 1 |
| 15 | Cadmium sequestration in Chlamydomonas reinhardtii 显示文摘 | Shengxi Hu Ken W K L Madeline Wu | 2001 | Plant Science2001，161，： | 1 |
| 16 | Broadband tristable energy harvester: modeling and experiment verification 显示文摘 | ZHOU Shengxi CAO Junyi INMAN D J | 2014 | Applied Energy2014，133，： | 1 |
| 17 | A new phenomenon of acoustic streaming显示文摘 | Ming Xiao Dai Changhui Shi Shengxi | 1991 | Acta Mechanica1991，7，3： | 1 |
| 18 | Protective effects of ischemic preconditioning ondonor lung in danine lung transplantation显示文摘 | Guohu L Shengxi C Wanzhong L | 1998 | Chest1998，113，5： | 1 |
| 19 | Induced B7-H1 expression on human renal tubular epithelial cells by the sublytic terminal complement complex C5b-9显示文摘 | Yongwen Chen Jingbo Zhang Guoning Guo Zhihua Ruan Man Jiang Shengxi Wu Sheng Guo Lei Fei Yuyu Tang Chengying Yang Zhengcai Jia Yuzhang Wu | 2008 | Molecular Immunology2008，，3： | 1 |
| 20 | Ginsenoside Rg1 modulation on thrombospondin‐1 and vascular endothelial growth factor expression in early renal fibrogenesis in unilateral obstruction显示文摘 | Xi‐ShengXie Heng‐ChuanLiu Feng‐PingWang Cheng‐LongZhang ChuanZuo YaoDeng Jun‐MingFan | 2010 | Phytother Res2010，，11： | 1 |
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