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| 1 | Working Mechanism of a Kind of Non-resonant Linear Piezoelectric Motor with Flexible Driving End显示文摘A non-resonant piezoelectric linear motor with a flexible driving end,which has an extensive working frequency range and good operation stability,is studied theoretically and experimentally.Based on the microscopic vibration characteristics of the motor stator,the longitudinal vibration model is established for the whole motor system.According to the Coulomb friction model and the motor vibration model,the friction mechanism of the nonresonant piezoelectric linear motor is investigated by dynamical analysis of the whole motor system.Furthermore,the vibration characteristics and mechanical output characteristics of the stator are simulated and experimentally studied on the basis of the friction drive mechanism model.Finally,both the simulation and experimental results show that this kind of motor remain stable in the frequency domain from 2.2 kHz to 3.5 kHz and that when the pre-stress is 4 Nand the driving voltage is 90 V,the maximum velocity of the motor is above 4 mm/s and the maximum thrust is nearly 0.5 N. | Chen Xifu Huang Weiqing Lu Qian Li Ming Ren Yaoqing | 2018 | Transactions of Nanjing University of Aeronautics and Astronautics2018，35，5： | 2 |
| 2 | Examination on the existence of slow wave in fluid saturated porous medium with the optical method显示文摘With the shadowgraph method, three ultrasonic pulses in Water, which correspond to the conversion modes of the fast compressional wave, the transverse wave and the slow compressional wave in the sample of Fluid-Saturated Porous Medium (FSPM) respectively,were observed and recorded by CCD camera. The positions of these pulses are cousistent with the computed positions and the time interval between these pulses measured by a transmitterreceiver method. | ZHU Guozhen ZHU Xifu LIU Liang(Department of Physics, Tsinghua University Beijing 100084)(State Key Laborotory of ocoustics, The Chinese Academy of science Beijing 100080) | 1999 | Chinese Journal of Acoustics1999，18，4： | 2 |
| 3 | STUDY ON ULTRASONIC VIBRATION DRILLING IN CARBON FIBER REINFORCED POLYMERS显示文摘STUDYONULTRASONICVIBRATIONDRILLINGINCARBONFIBERREINFORCEDPOLYMERSZhangQixin;SunShiyu(HarbinInstituteofTechnologyFactory529,Be... | Zhang Qixin Sun Shiyu (Harbin Institute of Technology Factory 529, Beijing)Luo Jianwei Feng Youbin Ma Chengxian Tu Xifu (Harbin Institute of Technology) | 1994 | Chinese Journal of Mechanical Engineering1994，7，1： | 2 |
| 4 | Ufl1 deficiency causes kidney atrophy associated with disruption of endoplasmic reticulum homeostasis显示文摘The UFMylation modification is a novel ubiquitin-like conjugation system,consisting of UBA5(E1),UFC1(E2),UFL1(E3),and the conjugating molecule UFM1.Deficiency in this modification leads to embryonic lethality in mice and diseases in humans.However,the function of UFL1 is poorly characterized.Studies on Ufl1 conditional knockout mice have demonstrated that the deletion of Ufl1 in cardiomyocytes and in intestinal epithelial cells causes heart failure and increases susceptibility to experimentally induced colitis,respectively,suggesting an essential role of UFL1 in the maintenance of the homeostasis in these organs.Yet,its physiological function in other tissues and organs remains completely unknown.In this study,we generate the nephron tubules specific Ufl1 knockout mice and find that the absence of Ufl1 in renal tubular results in kidney atrophy and interstitial fibrosis.In addition,Ufl1 deficiency causes the activation of unfolded protein response and cell apoptosis,which may be responsible for the kidney atrophy and interstitial fibrosis.Collectively,our results have demonstrated the crucial role of UFL1 in regulating kidney function and maintenance of endoplasmic reticulum homeostasis,providing another layer of understanding kidney atrophy. | You Zhou Xifu Ye Chenlu Zhang Jiabao Wang Zeyuan Guan Juzhen Yan Lu Xu Ke Wang Di Guan Qian Liang Jian Mao Junzhi Zhou Qian Zhang Xiaoying Wu Miao Wang Yu-Sheng Cong Jiang Liu | 2021 | Journal of Genetics and Genomics2021，48，5： | 1 |
| 5 | Magnetic resonance imaging characteristics of postoperative intracranial dissemination of recurrent gliomas显示文摘Ten intracranial gliomas cases, that had postoperative intracranial dissemination, underwent magnetic resonance imaging (MRI) examinations, including T1 weighted imaging, fat-suppressed T1 weighted imaging, T2 weighted imaging and fluid attenuated inversion recovery (FLAIR). Results showed that tumor metastasis had occurred via the cerebrospinal fluid, the brain white matter fibers and the surgical access site alone. On the plain MRI scans, 1/7 cases were linearly thickened with isointensity and 5/7 cases exhibited nodular foci on T1 weighted imaging; the cerebral sulci and cisterns in 2/7 cases had become shallow and five cases had nodular foci on T2 weighted imaging. FLAIR imaging revealed that the cerebral sulci and cisterns in 2/7 cases had become shallow and that six cases had affected nodular foci. The contrast-enhanced MRI scans revealed linear thickening in seven cases, nodules in seven cases, similarities to 'mould-like' signs in six cases and hydrocephalus in six cases. These findings suggested that MRI with different sequences can diagnose glioma metastasis. | Linfeng Zheng Guixiang Zhang Jinglong Zhao Han Wang Kang'an Li Lin Zhang Xifu Wang Pengpeng Sun Yunsheng Hu | 2011 | Neural Regeneration Research2011，6，33： | 1 |
| 6 | Study on theoretical of semiconductor laser self-mixing interferometer 显示文摘 | Sun Xiaoming Ma Junshan Zhang Xifu | 1998 | Chin J Lasers1998，4，25： | 1 |
| 7 | Immune characterization of mesenchymal stem cells in human umbilical cord Wharton’s jelly and derived cartilage cells显示文摘 | Shuyun Liu Mei Yuan Kedong Hou Li Zhang Xifu Zheng Bin Zhao Xiang Sui Wenjing Xu Shibi Lu Quanyi Guo | 2012 | Cellular Immunology (-)2012，，1： | 1 |
| 8 | 3D-printed cell-free PCL-MECM scaffold with biomimetic micro-structure and micro-environment to enhance in situ meniscus regeneration显示文摘Despite intensive effort was made to regenerate injured meniscus by cell-free strategies through recruiting endogenous stem/progenitor cells,meniscus regeneration remains a great challenge in clinic.In this study,we found decellularized meniscal extracellular matrix(MECM)preserved native meniscal collagen and glycosaminoglycans which could be a good endogenous regeneration guider for stem cells.Moreover,MECM significantly promoted meniscal fibrochondrocytes viability and proliferation,increased the expression of type II collagen and proteoglycans in vitro.Meanwhile,we designed 3D-printed polycaprolactone(PCL)scaffolds which mimic the circumferential and radial collagen orientation in native meniscus.Taken these two advantages together,a micro-structure and micro-environment dually biomimetic cell-free scaffold was manipulated.This cell-free PCL-MECM scaffold displayed superior biocompatibility and yielded favorable biomechanical capacities closely to native meniscus.Strikingly,neo-menisci were regenerated within PCL-MECM scaffolds which were transplanted into knee joints underwent medial meniscectomy in rabbits and sheep models.Histological staining confirmed neo-menisci showed meniscus-like heterogeneous staining.Mankin scores showed PCL-MECM scaffold could protect articular cartilage well,and knee X-ray examination revealed same results.Knee magnetic resonance imaging(MRI)scanning also showed some neo-menisci in PCL-MECM scaffold group.In conclusion,PCL-MECM scaffold appears to optimize meniscus regeneration.This could represent a promising approach worthy of further investigation in preclinical applications. | Weimin Guo Mingxue Chen Zhenyong Wang Yue Tian Jinxuan Zheng Shuang Gao Yangyang Li Yufeng Zheng Xu Li Jingxiang Huang Wei Niu Shuangpeng Jiang Chunxiang Hao Zhiguo Yuan Yu Zhang Mingjie Wang Zehao Wang Jiang Peng Aiyuan Wang Yu Wang Xiang Sui Wenjing Xu Libo Hao Xifu Zheng Shuyun Liu Quanyi Guo | 2021 | Bioactive Materials2021，6，10： | 1 |
| 9 | Revealing the real-time diversity and abundance of small mammals by using an Intelligent Animal Monitoring System(IAMS)显示文摘It is challenging to reveal the real-time spatio-temporal change of diversity and abundance of animals in natural systems by using traditional methods.The rapid advancement of new technologies such as the Internet of Things,artificial intelligence,and big-data processing,provide opportunities for developing novel technologies for moni-toring biodiversity and population abundance of animals with high efficacy and accuracy.In this study,by using a recently developed Intelligent Animal Monitoring System,named“Vector Intelligent Monitoring System(VIMS)”,we investigated the real-time diversity and abundance of small mammals in the Banruosi forest,Dujiangyan region,southwest China.To make a comparison of the VIMS with traditional methods,we also surveyed the diversity and abundance of small mammals using wired live traps.Compared to live traps,the VIMS has several advantages such as automatic data collection,intelligent identification of species,data visualization,whole-day and all-weather op-eration,little disturbance to animals,real-time monitoring,and is capable of revealing more small mammal species.However,the VIMS also has several disadvantages over live traps such as lower trapping efficiency and being more expensive than live traps.Our results suggest that the VIMS can be a complementary method to traditional ones in monitoring the real-time spatio-temporal change of diversity and abundance of small mammals(especially rare species).In addition,the VIMS is useful in monitoring other small animals like small carnivores,birds,amphibians,and reptiles. | Xifu YANG Liliang HAN Yong WANG Cong GUO Zhibin ZHANG | 2022 | Integrative Zoology2022，17，6： | 1 |
| 10 | Modified minimally invasive transforaminal lumbar interbody fusion using a transmultifidus approach: a safe and effective alternative to open-TLIF显示文摘 | Wenzhi Zhang Xu Li Xifu Shang | 2015 | Journal of Orthopaedic Surgery and Research2015，10，： | 1 |
| 11 | The Drazin inverse of the sum of two matrices and its applications 显示文摘 | YANG Hu LIU Xifu | 2011 | Journal of Computa- tional and Applied Mathematics2011，235，： | 1 |
| 12 | Further results on the group inverses and drazin inverses of anti-triangular block matrices显示文摘 | Liu Xifu Hu Yang | 2012 | Appl Math Comput2012，218，： | 1 |
| 13 | Dual Fizeau heterodyne interferometry for high -precision fiber optic displacement sensor显示文摘 | Zhou Yanzhou Qiang Xifu | 1998 | Sensors and Actuators A1998，65，： | 1 |
| 14 | Fabrication and cell affinity of biomimetic structured PLGA/articular cartilage ECM composite scaffold显示文摘 | Zheng Xifu Yang Fei Wang Shenguo | 2011 | Journal of Materials Science-Materials in Medicine2011，22，3： | 1 |
| 15 | Dynamical treatment of the splitting of HOLZlines from dislocations in silicon显示文摘 | Zou Huamin Yao Xifu and Wang Renhui | 1991 | Acta Cryst A1991，47，： | 1 |
| 16 | A fast al- gorithm for determining the Gaussian filtered mean line in surface metrology显示文摘 | Yuan Yibao Qiang Xifu Song J F | 2000 | Pree Eng2000，24，1： | 1 |
| 17 | Cardiac functional im- provement in rats with myocardial infarction by up-regulating car- diac myosin light chain kinase with neuregnlin 显示文摘 | Gu Xinghua Liu Xifu Xu Danling | 2010 | Cardiovasc Res2010，88，2： | 1 |
| 18 | The Drazin inverse of a modified matrix 显示文摘 | Liu Xifu | 2012 | Journal of Southwest University (Natural Science Edition)2012，34，6： | 1 |
| 19 | Ecological and environmental characteristics and management planning of Mawei Economic Development District显示文摘The natural and social background of the district was described, and the major ecological and environmental problems were analysed. The measures and planning for the ecological and environmental protection were recommended. Systematic analysis method and environmental mathematical models were suggested to be used for the ecological and environmental general planning in this paper. | Ye Changming, Wei Aixue, Huang Yuyao, Zhang Xifu, Chen Qihao and Liu JifengResearch Center for Eco-Environmental Sciences,Acadcmis Sinica,Beijing 100083,ChinaInstitute of Zoology,Academia Sinica,Beijing 100080,ChinaInstitute of Atmospheric Physics,Academia Sinica,Beijing 100083,ChinaFuzhou Municipal Institute of Environmental Sciences,Fuzhou 350005,ChinaFuzhou Municipal Environmental Monitoring Station,Fuzhou 350005,China | 1991 | Journal of Environmental Sciences1991，3，2： | 0 |
| 20 | Study on Magnetic Domain Structure of Co/Pt Dots Array显示文摘Co/Pt multilayer dots arrays with 580-nm periodicity were fabricated using Laser interference lithography(LIL)and an ion-beam milling technique.We obtained uniform dots arrays with a large area by optimizing the exposure parameters and improving exposure conditions.We obtained their shapes and magnetic domain structures and investigated using an Atomic force microscope(AFM)and Magnetic force microscope(MFM).The AFM and MFM images show:1)when their size is smaller than 400nm,the dots are in single-domain state and their shape tends to be circular;and 2)when their size is greater than 400nm,the dots are in multi-domain state and they tend to form squares.The dots arrays possibly can be used in nano-scale magnetic storage. | ZHU Xifu JING Xiaojun DU Huan | 2017 | Chinese Journal of Electronics2017，26，3： | 0 |
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