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| 1 | Outcomes in refractory diffuse large B-cell lymphoma:results fromamulticenter real-world study in China显示文摘Background:Diffuse large B-cell lymphoma(DLBCL)patients refractory to rituximab-based immunochemotherapy have a dismal prognosis.However,the definition of refractory DLBCL remains inconsistent and no large cohort study data is available from Asian countries.To validate the definition and outcomes of refractory DLBCL in China,we conducted a multicenter,retrospective cohort study.Methods:The REtrospective AnaLysis of Treatment REspoNse of refractory DLBCL(REAL-TREND)study was performed using real-world data from 8 centers in China.DLBCL patients with curative intent were included in the REAL-TREND dataset.Overall survival(OS)was estimated using the Kaplan-Meier method and compared by the log-rank test.Due to heterogeneity in response rates among different centers,the response rates of refractory patients were pooled using random-effect models.Multivariate survival analysis was performed using the Cox regression model.Results:A total of 2778 DLBCL patients diagnosed between January,2010 and December,2015 were enrolled to this study.After validating previous definitions,the SCHOLAR-1 study was most suitable to define refractory DLBCL.The estimated 5-year cumulative incidence of refractory patients was 20%(95% confidence Interval[CI]=18%-22%).After the determination of refractory disease,overall response rate and complete remission rate were 30%(95%CI=22%-38%)and 9%(95%CI=4%-15%),respectively.Patients with either no response to immunochemotherapy or relapse within 12 months after stem-cell transplantation had inferior survival with a median OS of 5.9 months(95%CI=5.5-7.1 months)and 2-year OS rate of 16%(95%CI=12%-20%).International prognostic index score 4-5(hazard ratio[HR]=2.22;95%CI=1.47-3.35),central nervous systemrelapse(HR=1.43;95%CI=1.04-1.97),and best response status(HR=2.68;95%CI=1.42-5.03 for partial remission.HR=5.97,95%CI=3.21-11.11 for stable disease/progressive disease)were independent unfavorable prognostic factors.Conclusions:This is the first large-scale Asian cohort study focusing on outcomes of refractory DLBCL.The definition of the SCHOLAR-1 study identifies patients with homogenously inferior survival,thus is appropriate to select refractory DLBCL.Due to poor clinical outcomes in the rituximab era,patients with refractory DLBCL may be potential candidates for novel treatment modalities. | Shuo Wang Li Wang Jianda Hu Wenbin Qian Xi Zhang Yu Hu Qi Zhu Bobin Chen Depei Wu Chung-Chou H.Chang Pengpeng Xu Xiaoyun Zheng Juying Wei Yao Liu Guohui Cui Yong Tang Yan Ma Haiwen Huang Hongmei Yi Weili Zhao | 2021 | Cancer Communications2021，41，3： | 10 |
| 2 | Heritable/conditional genome editing in C. elegans using a CRISPR-Cas9 feeding system显示文摘 | Pengpeng Liu Lijiang Long Kai Xiong Bo Yu Nannan Chang Jing-Wei Xiong Zuoyan Zhu Dong Liu | 2014 | Cell Research2014，24，7： | 8 |
| 3 | Benefit of everolimus as a monotherapy for a refractory breast cancer patient bearing multiple genetic mutations in the PI3K/AKT/mTOR signaling pathway显示文摘A postmenopausal patient with a diagnosis of estrogen receptor(ER)(+), progesterone receptor(PR)(+), and human epidermal growth factor receptor-2(HER2)(-) breast cancer was reported. The patient refused surgery and was resistant to conventional chemotherapy regimens. Computed tomography and the circulating tumor cell test indicated that the patient's tumor burden increased rapidly even after several chemotherapy sessions. Multiple genetic aberrances in the phosphatidylinositol3-kinases(PI3 K) signaling pathway were detected via next-generation sequencing(NGS)-based liquid biopsy, including a p. G1007 R missense mutation in exon 21 of PIK3 CA(33.61%), a p.L70 fs frameshift mutation in exon 3 of phosphatase and tension homolog deleted on chromosome ten(PTEN)(49.14%), and a p. D1542 Y missense mutation in exon 32 of mammalian target of rapamycin(m TOR)(1.66%). Therefore, only the m TOR inhibitor everolimus was administered to the patient. Partial remission(PR) was observed after 2 months, and sustained stable disease(SD) was observed after a year and a half. Subsequent sequencing showed that the mutation ratio of PIK3 CA decreased to 4.17%, and that the PTEN and m TOR mutations disappeared, which revealed the significant curative effect of everolimus. We report the first case of successful monotherapy treatment using everolimus in a patient with advanced breast cancer bearing mutations in genes involved in the PI3 K/ARK/m TOR signaling pathway. The success of this case highlights the invaluable clinical contribution of NGS-based liquid biopsy, as it successfully provided an optimal therapeutic target for the patient with advanced breast cancer. | Yehui Shi Wenwen Zhang Yingnan Ye Yanan Cheng Lei Han Pengpeng Liu Weipeng Zhao Zhongsheng Tong Jinpu Yu | 2018 | Cancer Biology & Medicine2018，15，3： | 6 |
| 4 | High-performance fiber-integrated multifunctional graphene-optoelectronic device with photoelectric detection and optic-phase modulation显示文摘In graphene-based optoelectronic devices,the ultraweak interaction between a light and monolayer graphene leads to low optical absorption and low responsivity for the photodetectors and relative high half-wave voltage for the phase modulator.Here,an integration of the monolayer graphene onto the side-polished optical fiber is demonstrated,which is capable of providing a cost-effective strategy to enhance the light–graphene interaction,allowing us to obtain a highly efficient optical absorption in graphene and achieve multifunctions:photodetection and optical phase modulation.As a photodetector,the device has ultrahigh responsivity(1.5×10^(7) A/W)and high external quantum efficiency(>1.2×10^(9)%).Additionally,the polybutadiene/polymethyl methacrylate(PMMA)film on the graphene can render the device an optical phase modulator through the large thermo-optic effect of the PMMA.As a phase modulator,the device has a relatively low half-wave voltage of 3 V with a 16 dB extinction ratio in Mach–Zehnder interferometer configuration. | LINQING ZHUO PENGPENG FAN SHUANG ZHANG YUANSONG ZHAN YANMEI LINYU ZHANG DONGQUAN LI ZHEN CHE WENGUO ZHU HUADAN ZHENG JIEYUAN TANG JUN ZHANG YONGCHUN ZHONG WENXIAO FANG GUOGUANG LU JIANHUI YU ZHE CHEN | 2020 | Photonics Research2020，8，12： | 3 |
| 5 | CRISPR-Cas adaptive immune systems in Sulfolobales:genetic studies and molecular mechanisms显示文摘CRISPR-Cas systems provide the small RNA-based adaptive immunity to defend against invasive genetic elements in archaea and bacteria.Organisms of Sulfolobales,an order of thermophilic acidophiles belonging to the Crenarchaeotal Phylum,usually contain both type I and typeⅢCRISPR-Cas systems.Two species,Saccharolobus solfataricus and Sulfolobus islandicus,have been important models for CRISPR study in archaea,and knowledge obtained from these studies has greatly expanded our understanding of molecular mechanisms of antiviral defense in all three steps:adaptation,expression and crRNA processing,and interference.Four subtypes of CRISPR-Cas systems are common in these organisms,including I-A,I-D,Ⅲ-B,andⅢ-D.These cas genes form functional modules,e.g.,all genes required for adaptation and for interference in the I-A immune system are clustered together to form aCas and i Cas modules.Genetic assays have been developed to study mechanisms of adaptation and interference by different CRISPR-Cas systems in these model archaea,and these methodologies are useful in demonstration of the protospacer-adjacent motif(PAM)-dependent DNA interference by I-A interference modules and multiple interference activities byⅢ-B Cmr systems.Ribonucleoprotein effector complexes have been isolated for SulfolobalesⅢ-B andⅢ-D systems,and their biochemical characterization has greatly enriched the knowledge of molecular mechanisms of these novel antiviral immune responses. | Zhenxiao Yu Suping Jiang Yuan Wang Xuhui Tian Pengpeng Zhao Jianan Xu Mingxia Feng Qunxin She | 2021 | Science China(Life Sciences)2021，64，5： | 2 |
| 6 | MoS_(2) reinforced PEEK composite for improved aqueous boundary lubrication显示文摘Polyether-etherketone(PEEK)is a corrosion-resistant material that has been widely used in aqueous lubrication.However,its anti-wear performance must be improved for its application in the industry.In this study,to improve the anti-wear performance of PEEK for aqueous boundary lubrication,PEEK/MoS_(2)composites were prepared by ball-milling and spark plasma sintering processes.A competitive MoS_(2)mechanism between the low shear strength property and the role of promoting wear debris generation influences the anti-wear performance of PEEK/MoS_(2)composites.Experiments demonstrated that the coefficients of friction(COF)and wear rate of PEEK composite with 0.25 wt%MoS_(2)were significantly reduced 68%and 94%,respectively.Furthermore,this was the first time that a PEEK composite could achieve a COF of less than 0.05 in aqueous boundary lubrication.Its anti-wear performance was verified to be better than that of PEEK/carbon fiber(CF)and Thordon composites.The PEEK/MoS_(2)composite may be a potential material for underwater equipment because of its outstanding anti-wear performance in aqueous boundary lubrication. | Xin HOU Pengpeng BAI Jingyang LI Yuanzhe LI Hui CAO Xiangli WEN Yonggang MENG Liran MA Yu TIAN | 2023 | Friction2023，11，9： | 2 |
| 7 | Rapid response of brain metastasis to crizotinib in a patient with KLC1-ALK fusion and MET gene amplification positive non-small cell lung cancer:a case report显示文摘Non-small cell lung cancer(NSCLC) ranks as the leading cause of cancer-related death in the world. Brain metastasis(BM) is a common complication of NSCLC, with 25%–40% of patients developing BM during the course of the disease. A significant strategy of local disease control in the central nervous system is radiation therapy. With the development of precision medicine,the concept of treating lung cancer BM has gradually changed. In this case, we performed a surgical procedure to obtain enough tumor tissue for the detection of the target gene and other related experiments after the patient was informed. Finally, we found that the patient had both hepatocyte growth factor receptor(MET) gene amplification and kinesin light chain 1-anaplastic lymphoma kinase fusion(KLC1-ALK) through next-generation sequencing and showed sensitivity to the targeted therapy of crizotinib. The patient exhibited good response. Our case was successful and underwent targeted therapy with the guidance of precise diagnosis. | Peng Wang Pei Xiao Yingnan Ye Pengpeng Liu Lei Han Li Dong Chunhua She Jinpu Yu | 2017 | Cancer Biology & Medicine2017，14，2： | 1 |
| 8 | Sorption of Ni(II) on Na-rectorite from aqueous solution: Effect of pH, ionic strength and temperature显示文摘 | Pengpeng Chang Xiangke Wang Shaoming Yu Wangsuo Wu | 2007 | Colloids and Surfaces A: Physicochemical and Engineering Aspects2007，，1： | 1 |
| 9 | Effects of different fungal elicitors on growth,total carotenoids and astaxanthin formation by Xanthophyllomyces dendrorhous显示文摘 | WANG Wenjun YU Longjiang ZHOU Pengpeng | 2006 | Bioresource Technology2006，97，1： | 1 |
| 10 | Distance-controllable and direction-steerable opto-conveyor for targeting delivery显示文摘Opto-conveyors have attracted widespread interest in various fields because of their non-invasive and non-contact delivery of micro/nanoparticles.However,the flexible control of the delivery distance and the dynamic steering of the delivery direction,although very desirable in all-optical manipulation,have not yet been achieved by optoconveyors.Here,using a simple and cost-effective scheme of an elliptically focused laser beam obliquely irradiated on a substrate,a direction-steerable and distance-controllable opto-conveyor for the targeting delivery of microparticles is implemented.Theoretically,in the proposed scheme of the opto-conveyor,the transverse and longitudinal resultant forces of the optical gradient force and the optical scattering force result in the transverse confinement and the longitudinal transportation of microparticles,respectively.In this study,it is experimentally shown that the proposed opto-conveyor is capable of realizing the targeting delivery for microparticles.Additionally,the delivery distance of microparticles can be flexibly and precisely controlled by simply adjusting the irradiation time.By simply rotating the cylindrical lens,the proposed opto-conveyor is capable of steering the delivery direction flexibly within a large range of azimuthal angles,from-75°to 75°.This study also successfully demonstrated the real-time dynamic steering of the delivery direction from-45°to 45°with the dynamical rotation of the cylindrical lens.Owing to its simplicity,flexibility,and controllability,the proposed method is capable of creating new opportunities in bioassays as well as in drug delivery. | Zhen Che Wenguo Zhu Yaoming Huang Yu Zhang Linqing Zhuo Pengpeng Fan Zhibin Li Huadan Zheng Wenjin Long Wentao Qiu Yunhan Luo Jun Zhang Jinghua Ge Jianhui Yu Zhe Chen | 2020 | Photonics Research2020，8，7： | 1 |
| 11 | Do tau-synaptic long-term depression interactions in the hippocampus play a pivotal role in the progression of Alzheimer’s disease?显示文摘Cognitive decline in Alzheimer’s disease correlates with the extent of tau pathology,in particular tau hyperphosphorylation that initially appears in the transentorhinal and related regions of the brain including the hippocampus.Recent evidence indicates that tau hyperphosphorylation caused by either amyloid-βor long-term depression,a form of synaptic weakening involved in learning and memory,share similar mechanisms.Studies from our group and others demonstrate that long-term depression-inducing low-frequency stimulation triggers tau phosphorylation at different residues in the hippocampus under different experimental conditions including aging.Conversely,certain forms of long-term depression at hippocampal glutamatergic synapses require endogenous tau,in particular,phosphorylation at residue Ser396.Elucidating the exact mechanisms of interaction between tau and long-term depression may help our understanding of the physiological and pathological functions of tau/tau(hyper)phosphorylation.We first summarize experimental evidence regarding tau-long-term depression interactions,followed by a discussion of possible mechanisms by which this interplay may influence the pathogenesis of Alzheimer’s disease.Finally,we conclude with some thoughts and perspectives on future research about these interactions. | Zhengtao Hu Tomas Ondrejcak Pengpeng Yu Yangyang Zhang Yin Yang Igor Klyubin Sean P.Kennelly Michael J.Rowan Neng-Wei Hu | 2023 | Neural Regeneration Research2023，18，6： | 1 |
| 12 | Synergistic lubricating effect of graphene/ionic liquid composite material used as an additive显示文摘We prepared a graphene/ionic liquid(G/IL)composite material by the hybridization of G and an IL for use as a lubricating oil additive.The friction coefficient and wear volume of a base oil containing 0.04 wt%of the G/IL composite was reduced by 45%and 90%,respectively.Furthermore,the base oil containing the G/IL composite exhibited better lubricating properties than the base oil containing G,IL,or a mixture of IL and G at the same mass fraction.A synergistic lubrication mechanism was also revealed.The G/IL composite was adsorbed and deposited on the wear surface,forming a more ordered protective film and a unique tribochemical reaction film during rubbing.Therefore,the G/IL composite exhibited the synergistic lubricating effects of G and IL,which significantly improved the lubricating performance of the base oil.This study also suggested a way to limit the out-of-plane puckering of G at the macroscale. | Lincong LIU Ming ZHOU Youtang MO Pengpeng BAI Qilin WEI Long JIN Shengli YOU Mingyue WANG Liangchuan LI Xin CHEN Xiao LI Yu TIAN | 2021 | Friction2021，9，6： | 1 |
| 13 | Experimental Investigation on Ejector Performance Using R134a as Refrigerant显示文摘Ejector refrigeration has the advantage of low capital cost,simple design,reliable operation,long lifespan and almost no maintenance.The only weakness is the low efficiency and its intolerance to deviations from design operation condition.R134 a used in ejector refrigeration system gives better performance in comparison with many other environmental friendly refrigerants as the generation temperature is from 75℃to 80℃.The present work experimentally investigated the on-design and off-design performance of the ejector with fixed geometry using R134 a as refrigerant,and cycle performance of the ejector refrigeration system.The experimental prototype was constructed and the effects of primary flow inlet pressure,secondary flow inlet pressure and ejector back pressure on ejector performance and cycle performance were investigated respectively.The operation conditions are:primary flow inlet pressure from 2.2 MPa to 3.25 MPa,secondary flow inlet pressure from 0.36 MPa to 0.51 MPa,ejector back pressure from 0.45 MPa to 0.67 MPa.Conclusions were drawn from the experimental results,and the experimental data can be used for validation of theoretical model for both critical and subcritical mode. | DAI Zhengshu YU Bo LIU Pengpeng CHEN Guangming ZHANG Hua | 2019 | Journal of Thermal Science2019，28，4： | 1 |
| 14 | Hydrotherrnal syn- thesis of hollow silica spheres under acidic conditions 显示文摘 | Yu Qiyu Wang Pengpeng Hu Shi | 2011 | Langmuir2011，27，11： | 1 |
| 15 | Etoposide,dexamethasone,and pegaspargase with sandwiched radiotherapy in early-stage natural killer/T-cell lymphoma:A randomized phase III study显示文摘Methotrexate,etoposide,dexamethasone,and pegaspargase(MESA)with sandwiched radiotherapy is known to be effective for early-stage extranodal natural killer/T-cell lymphoma,nasal type(NKTCL).We explored the efficacy and safety of reduced-intensity,non-intravenous etoposide,dexamethasone,and pegaspargase(ESA)with sandwiched radiotherapy.This multicenter,randomized,phase III trial enrolled patients aged between 14 and 70 years with newly diagnosed early-stage nasal NKTCL from 27 centers in China.Patients were randomly assigned(1:1)to receive ESA(pegaspargase 2,500 IU/m^(2)intramuscularly on day 1,etoposide 200 mg orally,and dexamethasone 40 mg orally on days 2–4)or MESA(methotrexate 1 g/m^(2)intravenously on day 1,etoposide 200 mg orally,and dexamethasone 40 mg orally on days 2–4,and pegaspargase 2,500 IU/m^(2)intramuscularly on day 5)regimen(four cycles),combined with sandwiched radiotherapy. | Huijuan Zhong Shu Cheng Xi Zhang Bing Xu Jiayi Chen Xufeng Jiang Jie Xiong Yu Hu Guohui Cui Juying Wei Wenbin Qian Xiaobing Huang Ming Hou Feng Yan Xin Wang Yongping Song Jianda Hu Yuanhua Liu Xuejun Ma Fei Li Chongyang Wu Junmin Chen Li Yu Ou Bai Jingyan Xu Zunmin Zhu Li Liu Xin Zhou Li Huang Yin Tong Ting Niu Depei Wu Hao Zhang Chaofu Wang Binshen Ouyang Hongmei Yi Qi Song Gang Cai Biao Li Jia Liu Zhifeng Li Rong Xiao Luqun Wang Yujie Jiang Yanyan Liu Xiaoyun Zheng Pengpeng Xu Hengye Huang Li Wang Saijuan Chen Weili Zhao | 2023 | The Innovation2023，4，3： | 0 |
| 16 | Robust scalable reversible strong adhesion by gecko-inspired composite design显示文摘Bio-inspired reversible adhesion has significant potential in many fields requiring flexible grasping and manipulation,such as precision manufacturing,flexible electronics,and intelligent robotics.Despite extensive efforts for adhesive synthesis with a high adhesion strength at the interface,an effective strategy to actively tune the adhesion capacity between a strong attachment and an easy detachment spanning a wide range of scales has been lagged.Herein,we report a novel soft-hard-soft sandwiched composite design to achieve a stable,repeatable,and reversible strong adhesion with an easily scalable performance for a large area ranging from~1.5 to 150 cm2 and a high load ranging from~20 to 700 N.Theoretical studies indicate that this design can enhance the uniform loading for attachment by restraining the lateral shrinkage in the natural state,while facilitate a flexible peeling for detachment by causing stress concentration in the bending state,yielding an adhesion switching ratio of~54 and a switching time of less than~0.2 s.This design is further integrated into versatile grippers,climbing robots,and human climbing grippers,demonstrating its robust scalability for a reversible strong adhesion.This biomimetic design bridges microscopic interfacial interactions with macroscopic controllable applications,providing a universal and feasible paradigm for adhesion design and control. | Xiaosong LI Pengpeng BAI Xinxin LI Lvzhou LI Yuanzhe LI Hongyu LU Liran MA Yonggang MENG Yu TIAN | 2022 | Friction2022，10，8： | 0 |
| 17 | Sealing functional ionic liquids in conjugated microporous polymer membrane by solvent-assisted micropore tightening显示文摘Porous organic polymers hold great promise for molecular sieving membrane separation.Although the inclusion of functional ionic liquid(IL)in the pores offers a facile way to manipulate their separation properties,the IL leaching during the separation process is difficult to avoid.Herein,we report a strategy to in-situ encapsulate ILs into the micropores of the conjugated microporous polymer membrane via a 6-min electropolymerization and further seal the aperture of the pores to prevent ILs leaching by solvent-assisted micropore tightening(SAMT).Upon screening the binding energy between different ILs and gas molecules,two ILs were selected to be incorporated into the membrane for CO_(2)/CH_(4) and O_(2)/N_(2) gas separations.The resultant separation performances surpass the 2008 Robeson upper bound.Notably,the ILs can be locked in the micropores by a facile high surface tension solvent treatment process to improve their separation stability,as evidenced by a 7-day continuous test.This simple and controllable process not only enables efficient and steady separation performance but also provides an effective strategy for confining and sealing functional guest molecules in the porous solids for various applications. | Mengxi Zhang Anke Yu Xiangyu Wu Pengpeng Shao Xin Huang Dou Ma Xianghao Han Jing Xie Xiao Feng Bo Wang | 2022 | Nano Research2022，15，3： | 0 |
| 18 | Evaluation of Chito-Oligosaccharide(COS)in Vitro and in Vivo:Permeability Characterization in Caco-2 Cells Monolayer and Pharmacokinetics Properties in Rats显示文摘Chito-oligosaccharide(COS)had shown a variety of biological activities and potential biomedical implications.The present study investigated the pharmacokinetics,bioavailability,and in vitro absorption of COS with degrees of polymerization(DPs)2-7 and explored the influence of DPs on them.From Caco-2 cell permeation studies,COS were low permeability compounds with no directional effects,suggesting a low in vivo absorption mediated by facilitation diffusion and paracellular absorption.After an intragastrical administration to rats,COS2 showed the highest systemic exposure in six oligosaccharides.The bioavailability of COS2-7 was 7.33%,6.11%,4.67%,4.13%,4.02%,0.99%,respectively.Differences in bioavailability for each COS correlated to structural variations,with high DPs contributing to a decrease in bioavailability.In conclusion,COS could be absorbed by the intestinal tract both in vitro and in vivo.The very low oral bioavailability of COS could be due to low permeability.DPs can affect absorption and bioavailability of COS2-7.This study provided evidence for the absorption characteristics of COS2-7 to help us better understanding the pharmacological actions. | ZHANG Pengpeng ZHANG Miaomiao DONG Kaiyu ZHANG Yicong YANG Shuang WANG Yuanhong JIANG Tingfu YU Mingming LV Zhihua | 2022 | Journal of Ocean University of China2022，21，3： | 0 |
| 19 | Statistical approach for the culture conditions optimization of magnetotactic bacteria for magnetic cells production显示文摘The culture of Magnetospirillum magneticum WM-1 depends on several control factors that have great effect on the magnetic cells concentration. Investigation into the optimal culture conditions needs a large number of experiments. So it is desirable to minimize the number of experiments and maximize the information gained from them. The orthogonal design of experiments and mathematical statistical method are considered as effective methods to optimize the culture condition of magnetotactic bacteria WM-1 for high magnetic cells concentration. The effects of the four factors, such as pH value of medium, oxygen concentration of gas phase in the serum bottle, C:C (m_(tartaric acid): m_(succinic acid)) ratio and NaNO_3 concentration, are simultaneously investigated by only sixteen experiments through the orthogonal design L16(4~4) method. The optimal culture condition is obtained. At the optimal culture condition ( pH 7.0, an oxygen concentration 4.0%, C: C (m_(tartaric acid):m_(succinic acid)) ratio 1:2 and NaNO_3 100 mg l^(-1)), the magnetic cells concentration is promoted to 6.5×10~7 cells ml^(-1), approximately 8.3% higher than that under the initial conditions. The pH value of medium is a very important factor for magnetic cells concentration. It can be proved that the orthogonal design of experiment is of 90% confidence. Ferric iron uptake follows Michaelis-Menten kinetics with a K_m of 2.5 μM and a V_(max) of 0.83 min^(-1). | Li Wenbing Yu Longjiang Zhou Pengpeng | 2006 | Agricultural Science & Technology2006，7，4： | 0 |
| 20 | Calculation of Circumferential Modal Frequencies of Permanent Magnet Synchronous Motor显示文摘Accurate calculation of the natural frequencies of permanent magnet synchronous motors( PMSMs) is essential to the prediction of vibration and noise of PMSMs. The analytical and numerical methods are respectively used to calculate natural frequencies of stator yoke,stator core,stator core with windings,motor casing and stator system. It is found that the relative errors between calculated results with traditional analytical formulas and numerical results are very large. For the sake of reducing relative errors,novel analytical formulas of calculating circumferential modal frequencies of stator core,stator core with windings,motor casing and stator system are proposed. Compared with the results of numerical and experimental modal analysis,the effectiveness of novel analytical formulas is verified. | Shenbo Yu Shuangshuang Zhong Haining Zhao Pengpeng Xia Kai Guo | 2019 | Journal of Harbin Institute of Technology(New Series)2019，26，1： | 0 |
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