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| 1 | Research on heart sound identification technology显示文摘In this article,both the basic principles and the experimental methods of identity recognition technology based on heart sounds are addressed.First,the characteristics of heart sounds and the feasibility of heart sounds as a biometric were analyzed.A synthetic model of heart sounds was then developed based on a family of wavelets;Finally,the characteristic parameters of heart sounds were extracted by using the heart sounds linear band frequency cepstra(HS-LBFC)with a specified configuration,and the similarity distance was adopted for heart sound identification.To highlight the difference in two heart sound signals between the time and frequency domains,a construction method of the heart sound wavelet,a calculation method of the parameters of a synthetic model,selection of the characteristic parameters of heart sounds and the corresponding data processing technology were examined.The experimental results showed that the proposed method exhibited excellent performance and practicability. | CHENG XieFeng MA Yong LIU Chen ZHANG XueJun GUO YuFeng | 2012 | Science China(Information Sciences)2012，55，2： | 20 |
| 2 | An overview of graphene-based hydroxyapatite composites for orthopedic applications显示文摘Hydroxyapatite(HA)is an attractive bioceramic for hard tissue repair and regeneration due to its physicochemical similarities to natural apatite.However,its low fracture toughness,poor tensile strength and weak wear resistance become major obstacles for potential clinical applications.One promising method to tackle with these problems is exploiting graphene and its derivatives(graphene oxide and reduced graphene oxide)as nanoscale reinforcement fillers to fabricate graphene-based hydroxyapatite composites in the form of powders,coatings and scaffolds.The last few years witnessed increasing numbers of studies on the preparation,mechanical and biological evaluations of these novel materials.Herein,various preparation techniques,mechanical behaviors and toughen mechanism,the in vitro/in vivo biocompatible analysis,antibacterial properties of the graphene-based HA composites are presented in this review. | Ming Li Pan Xiong Feng Yan Sijie Li Changhong Ren Zhichen Yin Ang Li Huafang Li Xunming Ji Yufeng Zheng Yan Cheng | 2018 | Bioactive Materials2018，3，1： | 9 |
| 3 | Three-dimensional-printed individualized porous implants:A new“implant-bone”interface fusion concept for large bone defect treatment显示文摘Bone defect repairs are based on bone graft fusion or replacement.Current large bone defect treatments are inadequate and lack of reliable technology.Therefore,we aimed to investigate a simple technique using three-dimensional(3D)-printed individualized porous implants without any bone grafts,osteoinductive agents,or surface biofunctionalization to treat large bone defects,and systematically study its long-term therapeutic effects and osseointegration characteristics.Twenty-six patients with large bone defects caused by tumor,infection,or trauma received treatment with individualized porous implants;among them,three typical cases underwent a detailed study.Additionally,a large segmental femur defect sheep model was used to study the osseointegration characteristics.Immediate and long-term biomechanical stability was achieved,and the animal study revealed that the bone grew into the pores with gradual remodeling,resulting in a long-term mechanically stable implant-bone complex.Advantages of 3D-printed microporous implants for the repair of bone defects included 1)that the stabilization devices were immediately designed and constructed to achieve early postoperative mobility,and 2)that osseointegration between the host bone and implants was achieved without bone grafting.Our osseointegration method,in which the“implant-bone”interface fusion concept was used instead of“bone-bone”fusion,subverts the traditional idea of osseointegration. | Teng Zhang Qingguang Wei Hua Zhou Zehao Jing Xiaoguang Liu Yufeng Zheng Hong Cai Feng Wei Liang Jiang Miao Yu Yan Cheng Daoyang Fan Wenhao Zhou Xinhong Lin Huijie Leng Jian Li Xinyu Li Caimei Wang Yun Tian Zhongjun Liu | 2021 | Bioactive Materials2021，6，11： | 9 |
| 4 | Multifunctional MgF_2/Polydopamine Coating on Mg Alloy for Vascular Stent Application显示文摘Mg alloy is of great potential in the application of vascular stent due to its degradation in physical environment and proper mechanical property.However its mechanical integrity does not meet the clinical requirement due to relatively fast degradation.Besides,in order to accelerate the reendothelialization of Mg-based stents,it needs surface modification to improve the attachment,growth and adhesion of endothelial cells(ECs).To solve the main obstacles,an anti-corrosion and quick endothelialization coating was prepared on novel Mg-Zn-Y-Nd alloy via a simple two-step immersion method in the present study,first in hydrofluoric acid(HF) then in dopamine tris-Hydrochloric acid(tris-HC1) solution.The coating was uniform and thin,which consisted of two layers—the upper was polydopamine(PDA) layer and the lower was MgF_2 layer.The alloy with the coating demonstrated dramatic corrosion resistance enhancement in vitro by immersion test and electrochemical test.Moreover the HFPDA-treated Mg alloy exhibited great performance of cell adhesion and proliferation.The coating created a favorable environment for ECs to have a competitive advantage over vascular smooth muscle cells(VSMCs),which was preferable for re-endothelialization.The results suggest that HF-PDA-treated Mg-Zn-Y-Nd alloy has great potential in the application of vascular stent and the surface coating method is of great application value in biodegradable Mg alloy stent due to its simplicity and effectiveness. | Xiaoli Liu Zhen Zhen Jing Liu Tingfei Xi Yudong Zheng Shaokang Guan Yufeng Zheng Yan Cheng | 2015 | Journal of Materials Science & Technology2015，31，7： | 8 |
| 5 | In vitro degradation and biocompatibility evaluation of typical biodegradable metals (Mg/Zn/Fe) for the application of tracheobronchial stenosis显示文摘Tracheobronchial obstruction in children due to benign stenosis or tracheobronchomalacia still remains a challenging matter of concern.Currently,there is 10%–20%complication rate in clinical treatment.The nonbiodegradable property of silicone stents and nickel-titanium memory alloy stents take the primary responsibility for drawbacks including stimulating local granulation tissue proliferation,displacement,and stent-related infections.Permanent tracheobronchial stent will be a persistent foreign object for a long time,causing excessive secretion of tracheal mucosa,ulceration and even perforation,which is particularly unsuitable for young children with persistent tracheal growth.In this study,the degradation and biocompatibility performance of three typical biodegradable metals were investigated as potential tracheobronchial stent materials.The results exhibited that these materials showed different degradation behaviors in the simulating respiratory fluid environment compared with SBF.Except for pure iron group,high purity magnesium and zinc showed favorable cell adhesion and proliferation in three culture methodologies(direct culture,indirect culture and extraction culture).The proper corrosion rate and good biocompatibility indicated that high purity magnesium and zinc may be good candidates as tracheobronchial stent materials. | Yangyang Li Jianglong Yan Wenhao Zhou Pan Xiong Pei Wang Wei Yuan Yufeng Zheng Yan Cheng | 2019 | Bioactive Materials2019，4，1： | 8 |
| 6 | Electrophoretic-deposited novel ternary silk fibroin/graphene oxide/hydroxyapatite nanocomposite coatings on titanium substrate for orthopedic applications显示文摘 | Ming LI Pan XIONG Maosong MO Yan CHENG Yufeng ZHENG | 2016 | Frontiers of Materials Science2016，10，3： | 6 |
| 7 | Ability of lower teardrop edge to restore anatomical hip center height in total hip arthroplasty显示文摘 | Lu Yufeng Cheng Liming Guo Wanshou Yu Qingsheng Gao Fuqiang Zhang Qidong Liu Zhaohui Sun Wei Shi Zhencai | 2014 | Chinese Medical Journal2014，，22： | 5 |
| 8 | Encoding and Transmission of Orthogonally Optical Label Switching Using DQPSK Payload and MD-RZ Label显示文摘 | SHAO Yufeng WEN Shuangchun CHEN Lin XIAO Yaoqiang CHENG Lili XU Huiwen | 2009 | Chinese Journal of Electronics2009，18，2： | 4 |
| 9 | Additively manufactured pure zinc porous scaffolds for critical-sized bone defects of rabbit femur显示文摘Additive manufacturing has received attention for the fabrication of medical implants that have customized and complicated structures.Biodegradable Zn metals are revolutionary materials for orthopedic implants.In this study,pure Zn porous scaffolds with diamond structures were fabricated using customized laser powder bed fusion(L-PBF)technology.First,the mechanical properties,corrosion behavior,and biocompatibility of the pure Zn porous scaffolds were characterized in vitro.The scaffolds were then implanted into the rabbit femur critical-size bone defect model for 24 weeks.The results showed that the pure Zn porous scaffolds had compressive strength and rigidity comparable to those of cancellous bone,as well as relatively suitable degradation rates for bone regeneration.A benign host response was observed using hematoxylin and eosin(HE)staining of the heart,liver,spleen,lungs,and kidneys.Moreover,the pure Zn porous scaffold showed good biocompatibility and osteogenic promotion ability in vivo.This study showed that pure Zn porous scaffolds with customized structures fabricated using L-PBF represent a promising biodegradable solution for treating large bone defects. | Dandan Xia Yu Qin Hui Guo Peng Wen Hong Lin Maximilian Voshage Johannes Henrich Schleifenbaum Yan Cheng Yufeng Zheng | 2023 | Bioactive Materials2023，，1： | 2 |
| 10 | Hierarchical Micropore/Nanorod Apatite Hybrids In-Situ Grown from 3-D Printed Macroporous Ti6Al4V Implants with Improved Bioactivity and Osseointegration显示文摘The advent of three-dimensional(3-D) printed technique provides great possibility in the fabrication of customized porous titanium(Ti) implant. However, the bioinert property of the printed Ti poses an outstanding problem. Hybrid micro-arc oxidation and hydrothermal(MAO–HT) treatment on porous metals is able to produce multi-scaled hierarchical orthopedic implant, showing great potential for surface modification of 3-D printed implant. In this study, cylindrical porous Ti6Al4V(Ti64) scaffolds with pore size of 640 μm, porosity of 73% were 3-D printed by electron beam melting process, and their surfaces were left untreated or treated by a combined MAO–HT procedure. In vitro bioactivity was tested by immersion in simulated body fluid for different time points. Then, 12 scaffolds in each group were implanted into the femoral condyles of New Zealand rabbit for 8 weeks. Osseointegration was evaluated by qualitative and quantitative histological analysis, and the bone ingrowth features were probed by sequential fluorescent labeling at 3 and 6 weeks post-surgery. Following the MAO–HT treatment, the porous Ti64 scaffold was endowed with multi-scaled micro/nano-topographies and high amounts of Ca P on its surface.The treated scaffold exhibited drastically enhanced apatite forming ability compared with the untreated one. In vivo test revealed significantly that a higher amount of bone ingrowth and bone implant contact at the treated scaffold. The 2 types of scaffolds had different patterns of bone ingrowth: the treated scaffold exhibited a pattern of contact osteogenesis, by which bone formed directly on the treated implant surface, whereas bone formed distal to the implant surface of the untreated scaffold. MAO–HT treatment can significantly enhance the in vitro apatite-inducing ability and in vivo osseointegration capacity of 3-D porous Ti64 scaffold and may provide as a viable approach for the fabrication of bioactive 3-D printed porous implant for orthopedic applications. | Peng Xiu Zhaojun Jia Jia Lv Chuan Yin Hong Cai Chunli Song Huijie Leng Yufeng Zheng Zhongjun Liu Yan Cheng | 2017 | Journal of Materials Science & Technology2017，33，2： | 2 |
| 11 | Programmable multi-channel white noise generator显示文摘The pseudo-random number is widely applied in digital signalprocessing.The white noise number is the basis of generating random numbers ofdesired probability distributions.The design philosophy of a programmabledigital multi-channel white noise generator is proposed in this paper.In stead ofthe conventional shift register,by using high speed static RAM and digital signalprocessing chip,the multi-channel independent white noise is generated.It satis-fies the requirement in the fields of radar,sonar and communication.The analysisof design principle,block diagram and the results of system simulation is illus-trated. | LI Qihu, LIU Jinbo, YIN Li, ZHAO Guoying, LIU Wei CHENG Yufeng JIANG Hong(Institute of Acoustics. Academia Sinica Beijing 100080) | 1992 | Chinese Journal of Acoustics1992，11，3： | 2 |
| 12 | Inactive Al^(3+)-doped La(CoCrFeMnNiAl_(x))_(1/(5+x))O_(3)high-entropy perovskite oxides as high performance supercapacitor electrodes显示文摘A series of high-entropy perovskite oxides(HEPOs)La(CoCrFeMnNiAl_(x))_(1/(5+x))O_(3-δ)(x=0.4,0.5,0.6,and 0.7)have been synthesized by coprecipitation method combined with calcination process and explored as electrodes for supercapacitors.The crystal structure,microstructure,and elemental composition of HEPOs were investigated by X-ray diffraction(XRD),scanning electron microscopy(SEM),transmission electron microscopy(TEM),and energy-dispersive X-ray spectroscopy(EDS)in detail.The electrochemical properties of HEPOs as supercapacitor electrodes were elucidated.The specific capacitances of HEPOs(x=0.4,0.5,0.6,and 0.7)are 281.84,353.65,325.60,and 259.30 F/g at the current density of 1 A/g,respectively.After 2000 cycles,the specific capacitances of HEPOs(x=0.4,0.5,0.6,and 0.7)remain 85.01%,88.61%,86.37%,and 91.25%,respectively.Such outstanding electrochemical properties can be attributed to the entropy-stabilized structure caused by mixed six cations in B-site and the Al^(3+)-doping suppressing active ion aggregation during charge-discharge process.This research highlights the potential of HEPOs as electrodes for supercapacitors. | Meng GUO Yufeng LIU Fengnian ZHANG Fuhao CHENG Chufei CHENG Yang MIAO Feng GAO Jun YU | 2022 | Journal of Advanced Ceramics2022，11，5： | 2 |
| 13 | Performance of rectangular closed diaphragm walls in gently sloping liquefiable deposits subjected to different earthquake ground motions显示文摘The performance of rectangular closed diaphragm walls(RCDW)subjected to earthquake ground motions is extremely complicated in gently sloping liquefiable deposits and requires further investigation.A nonlinear finite element(FE)model was developed to investigate the seismic performance of an RCDW in the OpenSees platform.Initially,the feasibility of the FE model to simulate the seismic behavior of the RCDW was validated by comparing the numerical results with the experimental data.The numerical results agree well with the centrifuge test data.Then,the calibrated model was used to study the seismic performance of the RCDW subjected to different ground motions in gently sloping liquefiable deposits.The numerical results indicate that the soil-RCDW system under near-fault ground motions is more likely to be damaged than that under far-fault ground motions.The difference between the maximum and minimum(Dmax-min)the RCDW displacement and the maximum excess pore pressure in the soil core increased as the Arias intensity increased.The seismic response of the soil-RCDW system was strongly affected by the frequency content,durations,energy distribution and initial directions of the ground motions.Moreover,the modified specific energy density(MSED)has a good linear relationship with the Dmax-min of the RCDW displacement. | Zhang Jianlei Cheng Qiangong Li Yan Qiu Yuheng Wang Yufeng Wu Jiujiang | 2021 | Earthquake Engineering and Engineering Vibration2021，20，4： | 2 |
| 14 | Preparation and electrical conductivity of(Zr,Hf,Pr,Y,La)O high entropy fluorite oxides显示文摘A series of compositionally complex fluorite oxides(CCFOs)were prepared by ball milling the mixture of ZrO_(2),HfO_(2),Y_(2)O_(3),La_(2)O_(3),and Pr_(6)O_(11)followed by conventional solid-state sintering.Both XRD and TG-DSC results demonstrated that single-phase(Zr_(0.2)Hf_(0.2)Pr_(0.2)Y_(0.2)La_(0.2))O_(2-)δwas formed at 1400°C.Elements in bulk ceramic were uniformly distributed without evident accumulation according to SEM-EDS pictures.TEM results revealed that polycrystalline ceramic powder was assignable to cubic Fm-3m fluorite structure.The electrical conductivity(σ)was measured via EIS technology and activation energy(E_(a))of CCFOs was calculated in Arrhenius plots.In the temperature range of 300-750°C,CCFOs preserved the same conduction mechanism and(Zr_(0.1667)Hf_(0.1667)Pr_(0.1667)Y_(0.25)La_(0.25))O_(2-)δpossessed higherσand lower E_(a) than other high entropy fluorite oxides which is related to the incorporation of Pr element or the connection of cation-V_(o) complex. | Fengnian Zhang Fuhao Cheng Chufei Cheng Meng Guo Yufeng Liu Yang Miao Feng Gao Xiaomin Wang | 2022 | Journal of Materials Science & Technology2022，，10： | 2 |
| 15 | Improving the low temperature flow properties of palm oil biodiesel:Addition of cold flow improver显示文摘 | LüPengmei Cheng Yufeng Yang Lingmei | 2013 | Fuel Process Technol2013，110，： | 1 |
| 16 | Breeding and Application of Guidan 903,a New High-yield and Good-quality Maize Variety显示文摘To meet the demand of maize production in Guangxi and even the southwest region of China and realize the upgrading and undating of maize varieties which will continuously improve the yield and quality of maize,a new big-ear maize variety Guidan 903 with high yield,stable yield and good quality was established by the Maize Research Institute of Guangxi Academy of Agricultural Sciences with two self-selected inbred line GRL17349 and GRL21191 as female and male parents seperately.The average yield of this variety were 7429.5 and 7000.5 kg/hm^(2)in Guangxi Maize Regional Trial and Production Test respectively,which increased by 6.3%and 5.6%than the control(Guidan162).It was approved by Guangxi Zhuang Autonomous Region Crop Variety Certification Committee in June 2020(Approval No.Gui sheng yu 2020083).Determined by the Cereal Quality Supervision and Testing Center of Ministry of Agriculture and Rural Affairs(Bejjing),the grain bulk density,ratio of crude protein,crude fat,crude starch and lysine of Guidan 903 were 782 g/L,9.41%,6.19%,71.45%,0.35%respectively.This variety has the characterisics of strong resistance to collapse and disease,good quality,high and stable yield and wide adaptability.Furthermore,its seed yield is high with easy production technology and low cost. | Jinguo ZHOU Xiaodong XIE Haiyu ZHOU Yufeng JIANG Lanqiu QIN Hexia XIE Zhaolei TANG Weidong CHENG | 2021 | Agricultural Biotechnology2021，10，5： | 1 |
| 17 | In vitro corrosion and biocompatibility of binary magnesium alloys显示文摘 | Xuenan Gu Yufeng Zheng Yan Cheng Shengping Zhong Tingfei Xi | 2008 | Biomaterials2008，，4： | 1 |
| 18 | Hydrotreating of crude 2-ethylhexanol over Ni/Al 2 O 3 catalysts: Surface Ni species-catalytic activity correlation显示文摘 | Renchun Yang Xiaogang Li Junsheng Wu Xin Zhang Zhihua Zhang Yufeng Cheng Jintao Guo | 2009 | Applied Catalysis A General2009，，1： | 1 |
| 19 | Virus-like particle vaccine by intranasal vaccination elicits protective immunity against respiratory syncytial viral infection in mice显示文摘呼吸 syncytial 病毒(RSV ) 是在婴儿和孩子的更低的呼吸感染的一个领先的原因,但是仍然没有可得到的准许的疫苗。在这份报告,我们基于 Bac-to-Bac baculovirus 表达式系统开发了像病毒的粒子(VLP ) 疫苗,由一个流行性感冒病毒矩阵(M1 ) 组成蛋白质和 RSV 熔化蛋白质(F) 或 glycoprotein (G) 。这些 RSV VLP 被西方的污点分析和电子显微镜学识别。有 RSV-F VLP, RSV-G VLP,或两个的 intranasally 使免疫的女 BALB/c 老鼠(i.n ) 对 RSV 显示出病毒特定的抗体回答。全部的 IgG, IgG1, IgG2a,和 mucosal IgA 与 RSV-F 正 RSV-G VLP 在老鼠被检测,揭示细胞的有势力和 mucosal 免疫者回答。而且,我们发现这些混合 RSV VLP 对实时 RSV 挑战授与提高的保护,在病毒的复制和组织病理学说的变化的明显的变细与病毒的感染联系了的肺的出现重要减少。这些结果证明由 intranasal 种痘的 RSV-F 正 RSV-G VLP 是保证使用棉花老鼠和首领模型的进一步的评估的一个有希望的疫苗的候选人。 | Mengying Cai Cheng Wang Yufeng Li Hongjing Gu Sujing Sun Yueqiang Duan Chengcai Lai Keyu Wang Xiaolan Yang Li Xing Peirui Zhang Zhaohai Wang Shaogeng Zhang Xiaodong Guo Shubing Liu Yigang Tong Xiliang Wang Penghui Yang | 2017 | Acta Biochimica et Biophysica Sinica2017，49，1： | 1 |
| 20 | Epi demiology of chronic cutaneous wounds in China显示文摘 | Jiang Yufeng Huang Sha Fu Xiaobing Liu Hongwei Ran Xingwu Lu Shuliang Hu Dahai Li Qiang Zhang Hongwei Li Ying Wang Runxiu Xie Ting Cheng Biao Wang Ling {eng Liu Yi Ye Xiangbai Han Chunmao Chen Huade | 2011 | Wound Rep Reg2011，，19： | 1 |
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