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| 1 | Existence of periodic solutions for second-order Hamiltonian systems with asymptotically linear conditions显示文摘We consider a class of asymptotically linear nonautonomous second- order Hamiltonian systems.Using the Saddle Point Theorem,we obtain the existence result,which extends some previously known results. | Xingfan CHEN Fei GUO Peng LIU | 2018 | Frontiers of Mathematics in China2018，13，6： | 2 |
| 2 | 显示文摘 | Li Hexing Chen Xingfan Wang Minghui | 2002 | Applied Catalysis A2002，225，12： | 1 |
| 3 | Selective hydrogenation of cinnarnaldehyde to cinnamyl alcohol over the Co-La-B/SiO2 amorphous catalyst and the promoting effect of La-dopant显示文摘 | Chen Xingfan Li Hexing Dai Weilin | 2003 | Applied CatalysisA: General2003，253，： | 1 |
| 4 | Liquid Phase Hydrogenation of furfural to furfuryl alcohol over Mo-doped Co-B amorphous alloy catalysts显示文摘 | Chen Xingfan Li Hexing Luo Hongshan | 2002 | Applied CatalysisA: General2002，233，： | 1 |
| 5 | Liquid phase hydrogenation of furfural to furfuryl alcohol over Mo-doped Co-B amorphous alloy catalysts显示文摘 | Chen Xingfan Li Hexing Luo Hongshan | 2002 | Applied Catalysis A:General2002，233，12： | 1 |
| 6 | Alteration of gut microbiota in type 2 diabetes complicated with cholelithiasis patients显示文摘To the Editor:Type 2 diabetes(T2D)and cholelithiasis are both common diseases with a high,prevalence.In China,the,prevalence of T2D,is.0.90% and that offadult cholelithiasis is 6.83%. | Jiajia Chen Linlin Yan Xingfan Ma Ping Yuan Fan Zhao Zihan Han Jingshan Liu Wenbo Wang Donghai Zhou Hongyu Zhao Nan Feng Dandan Huang Shoukui Hu Jin Gui | 2022 | Chinese Medical Journal2022，135，17： | 1 |
| 7 | Clinical application of autologous chyle fat transplantation in the correction of sunken upper eyelid显示文摘Aim:We investigated the clinical application of autologous chyle fat in the correction of sunken upper eyelid.Methods:From November 2020 to October 2021,89 cases of correction with autologous chyle fat to sunken upper eyelid were performed(with or without other cosmetic procedures related to the eyes).An appropriate amount of fat was extracted from the superficial layer of the patient’s thigh and processed to chyle fat.About 0.5-2.8 mL of fat was injected under the orbicularis oculi muscle(roof-retro orbicularis oculi fat)or in the area where the orbital septal fat exists from the outer orbital margin of the upper eyelid.Results:In total,59 patients were followed up for 1-11 months after surgery.No infection,necrosis,vascular embolism,upper eyelid lumpiness,fat calcification,or liquefaction occurred in all patients,while seven cases showed inadequate correction.The depression basically disappeared,the shape was relatively full,the youthfulness was greatly improved,and the satisfaction of patients was high during the follow-up period.Conclusion:The correction with autologous chyle fat to sunken upper eyelid showed little trauma,short recovery periods,and satisfactory results,and it is worthy of being popularized and applied more widely. | Lin Qi Pu Wang Xingfan Chen | 2022 | Plastic and Aesthetic Research2022，9，1： | 1 |
| 8 | Liquid phase hydrogenation of furfural to furfuryl alcohol over Modoped Co-B amorphous alloy catalysts显示文摘 | XINGFAN CHEN HEXING LI HONGSHAN LUO | 2002 | Appl Catal A:General2002，233，： | 1 |
| 9 | Displacement Calibration of Optical Tweezers With Gravitational Acceleration显示文摘In recent years,levitated particles of optical traps in vacuum have shown the enormous potential for precision sensor development and new physics exploration.However,the accuracy of the sensor is still hampered by the uncertainty of the calibration factor relating the detected signal to the absolute displacement of the trapped particle.In this paper,we suggest and experimentally demonstrate a novel calibration method for optical tweezers based on free-falling particles in vacuum,where the gravitational acceleration is introduced as an absolute reference.Our work provides a calibration protocol with a great certainty and traceability,which is significant in improving the accuracy of precision sensing based on levitated optomechanical systems. | Jianyu YANG Nan LI Xunmin ZHU Ming CHEN Mian WU Xingfan CHEN Cheng LIU Jian ZHUANG Huizhu HU | 2023 | Photonic Sensors2023，13，4： | 0 |
| 10 | PtCo-based nanocatalyst for oxygen reduction reaction:Recent highlights on synthesis strategy and catalytic mechanism显示文摘Oxygen reduction reaction over Pt-based catalyst is one of the most significant cathode reactions in fuel cells.However,low reserves and high price of Pt have motivated researchers worldwide seeking enhanced utilization efficiency and durability by doping non-noble metals to form Pt-based alloy catalysts.Alloying Pt with Co has been recognized as one of the most effective approaches to achieve this goal.PtCo bimetal combination is one of the most promising candidates to synthesize highly efficient catalysts for oxygen reduction reaction(ORR)applications,owing to its relatively more suitable oxygen binding energy for four-electron transfer reactions.Recently,impressive strategies have been developed to fabricate more active and stable PtCo-based multimetallic alloys with tailorable size and morphology.This paper aims to summarize the most recent highlights on the study of the relationship between preparation strategies,morphologies,electroactivities of the PtCo-based catalyst at atomic level and further the relevant reaction mechanism.The challenges and opportunities on the further development of electrocatalysts for fuel cells are included to provide reference for the practical application. | Wenjuan Yan Puhua Sun Chen Luo Xingfan Xia Zhifei Liu Yuming Zhao Shuxia Zhang Liang Sun Feng Du | 2023 | Chinese Journal of Chemical Engineering2023，53，1： | 0 |
| 11 | Actual Sensing Sensitivity and SNR Measurement of Optical Tweezers Based on Coulomb Force Input显示文摘Sensing sensitivity is the key performance of optical tweezers.By adjusting the frequency and magnitude of an applied Coulomb force as an input of optical tweezers,we directly measured the sensitivity and signal-to-noise ratio(SNR)of a system and indirectly calculated the actual noise magnitude.Combined with an output filter,the relationship between the SNR and bandwidths was studied.We established the simulation model of a system using Simulink and simulated the relationship between the SNR and magnitude of the input forces and filter bandwidths.In addition,we built an experimental system to determine the relationship between the SNR and the magnitude of the input forces and filter bandwidths.The actual minimum detectable force was measured as 1.8275×10^(-17)N at a 1Hz bandwidth.The experimental results were correlated with the simulation and theoretical results,confirming the effectiveness of the proposed method and demonstrating the high sensitivity of vacuum optical tweezers as mechanical sensors.We proposed a novel method of calibration and measurement of system sensing parameters by applying an actual force that was more direct and precise than the theoretical calculation method that requires accurate fitting parameters,such as the particle radius and density.This method can be employed to analyze the system noise and phase characteristics to confirm and improve the real performance of the system. | Jiaojiao WANG Xingfan CHEN Shaochong ZHU Zhenhai FU Nan LI Huizhu HU | 2023 | Photonic Sensors2023，13，1： | 0 |
| 12 | HYDRAULIC CALCULATION AND MEASUREMENT OF FLOW FIELD WITHIN INLET PASSAGE OF LARGE PUMPING STATION显示文摘HYDRAULICCALCULATIONANDMEASUREMENTOFFLOWFIELDWITHININLETPASSAGEOFLARGEPUMPINGSTATIONHYDRAULICCALCULATIONANDMEASUREMENTOFFLOWF... | Guan Xingfan Chen Hongxun Xie Darong Guo Nailong(Jiangsu University of Science and Technology) | 1995 | Chinese Journal of Mechanical Engineering1995，8，1： | 0 |
| 13 | Visualization of amino acid composition differences between processed protein from different animal species by self-organizing feature maps显示文摘Amino acids are the dominant organic components of processed animal proteins,however there has been limited investigation of differences in their composition between various protein sources.Information on these differences will not only be helpful for their further utilization but also provide fundamental information for developing species-specific identification methods.In this study,self-organizing feature maps(SOFM) were used to visualize amino acid composition of fish meal,and meat and bone meal(MBM) produced from poultry,ruminants and swine.SOFM display the similarities and differences in amino acid composition between protein sources and effectively improve data transparency.Amino acid composition was shown to be useful for distinguishing fish meal from MBM due to their large concentration differences between glycine,lysine and proline.However,the amino acid composition of the three MBMs was quite similar.The SOFM results were consistent with those obtained by analysis of variance and principal component analysis but more straightforward.SOFM was shown to have a robust sample linkage capacity and to be able to act as a powerful means to link different sample for further data mining. | Xingfan ZHOU Zengling YANG Longjian CHEN Lujia HAN | 2016 | Frontiers of Agricultural Science and Engineering2016，3，2： | 0 |
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