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| 1 | On-line chatter detection using servo motor current signal in turning显示文摘Chatter often poses limiting factors on the achievable productivity and is very harmful to machining processes. In order to avoid effectively the harm of cutting chatter,a method of cutting state monitoring based on feed motor current signal is proposed for chatter identification before it has been fully developed. A new data analysis technique,the empirical mode decomposition(EMD),is used to decompose motor current signal into many intrinsic mode functions(IMF) . Some IMF's energy and kurtosis regularly change during the development of the chatter. These IMFs can reflect subtle mutations in current signal. Therefore,the energy index and kurtosis index are used for chatter detection based on those IMFs. Acceleration signal of tool as reference is used to compare with the results from current signal. A support vector machine(SVM) is designed for pattern classification based on the feature vector constituted by energy index and kurtosis index. The intelligent chatter detection system composed of the feature extraction and the SVM has an accuracy rate of above 95% for the identification of cutting state after being trained by experimental data. The results show that it is feasible to monitor and predict the emergence of chatter behavior in machining by using motor current signal. | LIU HongQil CHEN QmgHa LI Bin MAO XinYong MAO KuanMin PENG FangYu | 2011 | Science China(Technological Sciences)2011，54，12： | 15 |
| 2 | An efficient range-free localization algorithm for wireless sensor networks显示文摘Node positioning is a fundamental problem in applications of wireless sensor networks (WSNs). In this paper, a new range-free algorithm, called spring swarm localization algorithm (SSLA), is proposed for positioning WSNs. To determine the locations of sensor nodes, the proposed algorithm uses network topology information and a small fraction of sensor nodes which know their locations. Numerical simulations show that high positioning accuracy can be obtained by using the algorithm. Some examples are given to illustrate the effectiveness of the algorithm. | HE QinBin CHEN FangYue CAI ShuiMing HAO JunJun LIU ZengRong | 2011 | Science China(Technological Sciences)2011，54，5： | 13 |
| 3 | Bimetallic Pd-Ni core-shell nanoparticles catalysts for the Suzuki reaction显示文摘 | Ji Xiang Peng Li Hanbao Chong Li Feng Fangyu Fu Zhuang Wang Shilin Zhang Manzhou Zhu | 2014 | Nano Research2014，7，9： | 11 |
| 4 | SIDT1-dependent absorption in the stomach mediates host uptake of dietary and orally administered microRNAs显示文摘Dietary microRNAs have been shown to be absorbed by mammals and regulate host gene expression,but the absorption mechanism remains unknown.Here,we show that SIDT1 expressed on gastric pit cells in the stomach is required for the absorption of dietary microRNAs.SIDT1-deficient mice show reduced basal levels and impaired dynamic absorption of dietary microRNAs.Notably,we identified the stomach as the primary site for dietary microRNA absorption,which is dramatically attenuated in the stomachs of SIDT1-deficient mice.Mechanistic analyses revealed that the uptake of exogenous microRNAs by gastric pit cells is SIDT1 and low-pH dependent.Furthermore,oral administration of plant-derived miR2911 retards liver fibrosis,and this protective effect was abolished in SIDT1-deficient mice.Our findings reveal a major mechanism underlying the absorption of dietary microRNAs,uncover an unexpected role of the stomach and shed light on developing small RNA therapeutics by oral delivery. | Qun Chen Fan Zhang Lei Dong Huimin Wu Jie Xu Hanqin Li Jin Wang Zhen Zhou Chunyan Liu Yanbo Wang Yuyan Liu Liangsheng Lu Chen Wang Minghui Liu Xi Chen Cheng Wang Chunni Zhang Dangsheng Li Ke Zen Fangyu Wang Qipeng Zhang Chen-Yu Zhang | 2021 | Cell Research2021，31，3： | 10 |
| 5 | Three-dimensional porous V2O5 hierarchical octahedrons with adjustable pore architectures for long-life lithium batteries显示文摘三维(3D ) 多孔的 V < 潜水艇 class= “ a-plus-plus ” > 2 O < 潜水艇 class= “ a-plus-plus ” > 5 八面体成功地被制作了经由一固态刚准备的铵钒氧化物(AVO ) 的变换过程八面体。AVO 八面体的形成是盖住试剂和生长种类的赞成过度饱和的选择吸附的结果。随后, 3D 多孔的 V < 潜水艇 class= “ a-plus-plus ” > 2 O < 潜水艇 class= “ a-plus-plus ” > 5 八面体被 AVO 八面体的简单 thermolysis 经由一个锻烧处理获得。作为为锂电池的阴极材料,多孔的 V < 潜水艇 class= “ a-plus-plus ” > 2 O < 潜水艇 class= “ a-plus-plus ” > 5 八面体阴极在西班牙的北方展出 96 mAsga 盆的一个能力;并且(3 ) Zpy (n ?=? 17 ) , LV 质量从 226 被减少[178;306 ] g 到 220 [169;254 ] g (p ?=? 0.007 ) 在 13 点 ? 桴 ? 畦摮浡湥慴? 牦煥敵据敩 ? 景琠敨猠摥浩湥獴? 敢楳敤琠敨氠湯楧畴楤慮? 湡 ? 牴湡癳牥敳映湵慤敭瑮污映敲畱湥楣獥漠 ? 慥档戠極摬湩 ? 慢敳 ? 湯琠敨愠灭楬畴敤猠数瑣慲愠摮琠敨映潬牯猠数瑣慲? 慲楴?? 剓? 敭桴摯? | Qinyou An Pengfei Zhang Fangyu Xiong Qiulong Wei Jinzhi Sheng Qinqin Wang Liqiang Mai | 2015 | Nano Research2015，8，2： | 9 |
| 6 | High precision and efficiency robotic milling of complex parts:Challenges,approaches and trends显示文摘Due to the advantages of large workspace,low cost and the integrated vision/force sensing,robotic milling has become an important way for machining of complex parts.In recent years,many scholars have studied the problems existing in the applications of robotic milling,and lots of results have been made in the dynamics,pose planning,deformation control etc.,which provides theoretical guidance for high precision and high efficiency of robotic milling.From the perspective of complex parts robotic milling,this paper focuses on machining process planning and control techniques including the analysis of the robot-workspace,robot trajectory planning,vibration monitoring and control,deformation monitoring and compensation.As well as the principles of these technologies such as robot stiffness characteristics,dynamic characteristics,chatter mechanisms,and deformation mechanisms.The methods and characteristics related to the theory and technology of robotic milling of complex parts are summarized systematically.The latest research progress and achievements in the relevant fields are reviewed.It is hoped that the challenges,strategies and development related to robotic milling could be clarified through the carding work in this paper,so as to promote the application of related theories and technologies in high efficiency and precision intelligent milling with robot for complex parts. | Zerun ZHU Xiaowei TANG Chen CHEN Fangyu PENG Rong YAN Lin ZHOU Zepeng LI Jiawei WU | 2022 | Chinese Journal of Aeronautics2022，35，2： | 9 |
| 7 | Microstructural evolution and performance of carbon fiber-toughened ZrB_2 ceramics with SiC or ZrSi_2 additive显示文摘ZrB_2–SiC/ZrSi_2 ceramics containing 30 vol% carbon fiber(Cf) additive were fabricated by hot pressing at low temperature(1500 ℃) using submicron ZrB_2 powders, and their microstructural evolution and performance were investigated. The addition of SiC or ZrSi_2 significantly reduced the onset sintering temperature and enhanced the densification of ZrB_2. ZrB_2–ZrSi_2–Cf showed poor performance owing to the serious fiber degradation, while the fiber degradation was effectively inhibited in ZrB_2–SiC–Cf resulting in high fracture toughness, substantial fiber pull-out, and non-brittle fracture mode for such material. The critical thermal shock temperature difference of ZrB_2–SiC–Cf was up to 741 ℃, significantly higher than those of ZrB_2–SiC/ZrSi_2 and ZrB_2–ZrSi_2–Cf. Moreover, this composite displayed a good oxidation resistance at 1500 ℃ in air. | Kaixuan GUI Fangyu LIU Gang WANG Zhongjia HUANG Ping HU | 2018 | Journal of Advanced Ceramics2018，7，4： | 9 |
| 8 | The study of antioxidant activities of fucoidan from Laminaria japonica显示文摘Two large molecular weight fucoidan fractions F-A and F-B were obtained by water extraction and anion-exchange chromatography and then L-A and L-B with low molecular weight and uronic acid content were prepared by radical process degradation of F-A and F-B. The antioxidant activities of the fucoidan fractions on two oxygen free radicals and Cu2+-induced low-density lipoprotein (LDL) oxidation were studied. The results show that all the fucoidan fractions had excellent scavenging capacities on superoxide radical and hypochlorous acid, except the highly sulfated fraction L-B. In LDL oxidation system, low molecular weight fractions L-A and L-B exhibited great inhibitory effects on LDL oxidation induced by Cu2+, however F-A and F-B had little inhibitory effects in this system due to their large molecular weights. The present results suggest that fucoidan from Laminaria japonica is an excellent natural antioxidant and has great potential for preventing the free radical-mediated diseases. | ZhaoXue XueChanghu CaiYuepiao WangDongfeng FangYu | 2005 | High Technology Letters2005，11，1： | 7 |
| 9 | Mineralization,Geochemistry and Zircon U-Pb Ages of the Paodaoling Porphyry Gold Deposit in the Guichi Region,Lower Yangtze Metallogenic Belt,Eastern China显示文摘The newly discovered Paodaoling porphyry Au deposit from the Guichi region, Lower Yangtze River Metallogenic Belt(LYRB), contains >35 tons of Au at an average grade of ~1.7 g/t. It is a porphyry ‘Au-only' deposit, as revealed by current exploration in the depths, mostly above-400 m, which is quite uncommon among coeval porphyry mineralization along the LYRB. Additionally, there are also Cu-Au bearing porphyries and barren alkaline granitoids in the Paodaoling district. Zircon LA-ICP-MS U-Pb dating of the Cu-Au-bearing porphyries yield an age of 141–140 Ma, falling within the main magmatic stage of the LYRB, whereas the barren granites give an age of 125–120 Ma, coeval with the regional Atype granites. The Cu-Au-bearing porphyries are LILE-, LREE-enriched and HFSE-depleted, typical of arc magmatic affinities. The barren granites are HFSE-enriched, with lower LREE/HREE ratios and pronounced negative Eu anomalies. The Cu-Au-bearing porphyries in the Paodaoling district have high oxygen fugacities and high water content. Pyrite sulfur isotopes of the Paodaoling gold deposit indicate a magmatic-sedimentary mixed source for the ore-forming fluids. Based on the alteration and poly-metal zonation of the deepest exploration drill hole from the Paodaoling Au deposit, we propose that Cu ore bodies could lie at depth beneath the current Au ore bodies. The magmatism and associated Cu-Au mineralization of the Paodaoling district are likely to have formed in a subduction setting, during slab rollback of the paleo-Pacific plate. | DUAN Liu'an YANG Xiaoyong DENG Jianghong WANG Fangyue LEE Insung | 2018 | Acta Geologica Sinica(English Edition)2018，92，2： | 6 |
| 10 | Molecular imaging and therapy targeting coppermetabolism in hepatocellular carcinoma显示文摘Hepatocellular carcinoma(HCC)is the fifth most common cancer worldwide.Significant efforts have been devoted to identify new biomarkers for molecular imaging and targeted therapy of HCC.Copper is a nutritional metal required for the function of numerous enzymatic molecules in the metabolic pathways of human cells.Emerging evidence suggests that copper plays a role in cell proliferation and angiogenesis.Increased accumulation of copper ions was detected in tissue samples of HCC and many other cancers in humans.Altered copper metabolism is a new biomarker for molecular cancer imaging with position emission tomography(PET)using radioactive copper as a tracer.It has been reported that extrahepatic mouse hepatoma or HCC xenografts can be localized with PET using copper-64 chloride as a tracer,suggesting that copper metabolism is a new biomarker for the detection of HCC metastasis in areas of low physiological copper uptake.In addition to copper modulation therapy with copper chelators,short-interference RNA specific for human copper transporter 1(h Ctr1)may be used to suppress growth of HCC by blocking increased copper uptake mediated by h Ctr1.Furthermore,altered copper metabolism is a promising target for radionuclide therapy of HCC using therapeutic copper radionuclides.Copper metabolism has potential as a new theranostic biomarker for molecular imaging as well as targeted therapy of HCC. | Jason Wachsmann Fangyu Peng | 2016 | World Journal of Gastroenterology2016，22，1： | 6 |
| 11 | Paired related homeobox 1 transactivates dopamine D2 receptor to maintain propagation and tumorigenicity of glioma-initiating cells显示文摘Glioblastoma multiforme (GBM ) 是有有限治疗学的工具和差的预后的一个高度侵略的大脑肿瘤。最近的研究显示开始 glioma cells/glioma 干细胞(GICs/GSCs ) 可能为肿瘤开始,渗入,和复发负责。GIC 能异常地采用平衡胚胎的神经先锋的自强和区别的分子的机械。这里,我们发现那配对的相关 homeobox 1 (PRRX1 ) ,以前是的一个 homeodomain 抄写因素报导了控制骨胳的开发,在外皮的神经祖先被表示并且为他们的自强和合适的区别被要求。进一步, PRRX1 是在 glioma 样品和标签 GIC 的 overrepresented。Glioma 房间和 GIC 与 PRRX1 弄空不能在 vitro 宣传或在异种皮移植老鼠模型形成肿瘤。PRRX1 调整的 GIC 自强功能被多巴胺 D2 受体(DRD2 ) 调停。PRRX1 直接在 GIC 把它的表示绑在 DRD2 倡导者和 transactivates。发信号的 DRD2 的阻塞妨碍 GIC 自强,而它的 overexpression 恢复宣传和弄空 PRRX1 的 GIC 的 tumorigenic 潜力。最后, PRRX1 加强经由调停 DRD2 的细胞外的信号相关的 kinase (英皇家空军之阶级最低之兵) 和 AKT 的 GIC 激活。因此,我们的学习建议那治疗学的指向在 GIC 的 PRRX1DRD2ERK/AKT 轴是为对待 GBM 的有希望的策略。 | Yamu Li Wen Wang Fangyu Wang Qiushuang Wu Wei Li Xiaoling Zhong Kuan Tian Tao Zeng Liang Gao Ying Liu Shu Li Xiaobing Jiang Guangwei Du Yan Zhou | 2017 | Journal of Molecular Cell Biology2017，9，4： | 5 |
| 12 | Comparison of nonhuman primates identified the suitable model for COVID-19显示文摘Identification of a suitable nonhuman primate(NHP)model of COVID-19 remains challenging.Here,we characterized severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)infection in three NHP species:Old World monkeys Macaca mulatta(M.mulatta)and Macaca fascicularis(M.fascicularis)and New World monkey Callithrix jacchus(C.jacchus).Infected M.mulatta and M.fascicularis showed abnormal chest radiographs,an increased body temperature and a decreased body weight.Viral genomes were detected in swab and blood samples from all animals.Viral load was detected in the pulmonary tissues of M.mulatta and M.fascicularis but not C.jacchus.Furthermore,among the three animal species,M.mulatta showed the strongest response to SARS-CoV-2,including increased inflammatory cytokine expression and pathological changes in the pulmonary tissues.Collectively,these data revealed the different susceptibilities of Old World and New World monkeys to SARS-CoV-2 and identified M.mulatta as the most suitable for modeling COVID-19. | Shuaiyao Lu Yuan Zhao Wenhai Yu Yun Yang Jiahong Gao Junbin Wang Dexuan Kuang Mengli Yang Jing Yang Chunxia Ma Jingwen Xu Xingli Qian Haiyan Li Siwen Zhao Jingmei Li Haixuan Wang Haiting Long Jingxian Zhou Fangyu Luo Kaiyun Ding Daoju Wu Yong Zhang Yinliang Dong Yuqin Liu Yinqiu Zheng Xiaochen Lin Li Jiao Huanying Zheng Qing Dai Qiangming Sun Yunzhang Hu Changwen Ke Hongqi Liu Xiaozhong Peng | 2020 | Signal Transduction and Targeted Therapy2020，5，1： | 5 |
| 13 | Wilson病的食物治疗显示文摘Wilson病属于神经遗传性铜代谢为主的疾病,属少数可以治疗的遗传病,及时治疗大多预后良好。对Wilson病非药物治疗,即主要是肝豆状核变性基高锌低铜与富含巯基以及抗氧化成分比如Vit E的饮食以及中药替代治疗,作一介绍。 | 姚蕾 吴斌 王晓平 Fangyu Peng | 2012 | 微量元素与健康研究2012，29，6： | 4 |
| 14 | Comparative evaluation of the physicochemical properties of nano-hydroxyapatite/collagen and natural bone ceramic/collagen scaffolds and their osteogenesis-promoting effect on MC3T3-E1 cells显示文摘The use of various types of calcium phosphate has been reported in the preparation of repairing materials for bone defects.However,the physicochemical and biological properties among them might be vastly different.In this study,we prepared two types of calcium phosphates,nano-hydroxyapatite(nHA)and natural bone ceramic(NBC),into 3D scaffolds by mixing with type I collagen(CoL),resulting in the nHA/CoL and NBC/CoL scaffolds.We then evaluated and compared the physicochemical and biological properties of these two calcium phosphates and their composite scaffold with CoL.Scanning electron microscopy(SEM),X-ray photoelectron spectroscopy(XPS),Fourier-transform infrared spectroscopy(FTIR),X-ray diffraction spectroscopy(XRD)and compressive tests were used to,respectively,characterize the morphology,composition,distribution and the effect of nHA and NBC to collagen.Next,we examined the biological properties of the scaffolds using cytotoxicity testing,flow cytometry,immunofluorescence staining,biocompatibility testing,CCK-8 assays and RT-PCR.The results reflected that the Ca2t released from nHA and NBC could bind chemically with collagen and affect its physicochemical properties,including the infrared absorption spectrum and compression modulus,among others.Furthermore,the two kinds of scaffolds could promote the expression of osteo-relative genes,but showed different gene induction properties.In short,NBC/CoL could promote the expression of early osteogenic genes,while nHA/CoL could upregulate late osteogenic genes.Conclusively,these two composite scaffolds could provide MC3T3-E1 cells with a biomimetic surface for adhesion,proliferation and the formation of mineralized extracellular matrices.Moreover,nHA/CoL and NBC/CoL had different effects on the period and extent ofMC3T3-E1 cell mineralization. | Xiongxin Lei Jianping Gao Fangyu Xing Yang Zhang Ye Ma Guifeng Zhang | 2019 | Regenerative Biomaterials2019，6，6： | 4 |
| 15 | Room temperature preparation of highly stable cesium lead halide perovskite nanocrystals by ligand modification for white lightemitting diodes显示文摘The poor stability of halide perovskite nanocrystals(NCs)has severely hindered future practical application.Herein,we proposed a facile and effective ligand modification route to synthesize stable CsPbBr_(3) nanocrystals by introducing a double-terminal ligand,namely 4,4'-Azobis(4-cyanovalericacid)(CA),to replace the conventional oleic acid(OA)ligand at room temperature.The as-synthesized CsPbBr_(3)-CA not only possesses high photoluminescence quantum yield(72%)related to the reduced trap defects,but also shows significantly improved stability exposure to water,ethanol,light,and/or heat benefiting from the CA ligand anchored to NC surfaces tightly.The photoluminescence intensity of CsPbBr_(3)-CA maintains about 80%and 75%of its initial emission intensity after immersed in water or ethanol for 360 min,respectively,whereas that of the CsPbBr_(3)-OA was quenched completely within a few minutes.Moreover,an all-inorganic white light-emitting diode(LED)covered 126%National Television System Committee(NTSC)standard and 92%Rec.2020 standard was fabricated by combining the green CsPbBr_(3)-CA and commercial red-emitting K2SiF6:Mn4+(KSF)phosphors onto a blue LED chip.Thus,the presented work initiates the development of the room temperature preparation of high quality CsPbBr_(3) and shows prospect for next-generation displays. | Yu Zhang Guishun Li Changkun She Shaohua Liu Fangyu Yue Chengbin Jing Ya Cheng Junhao Chu | 2021 | Nano Research2021，14，8： | 3 |
| 16 | Low-strain TiP_(2)O_(7) withthree-dimensionalionchannelsas long-life and high-rate anode material for Mg-ion batteries显示文摘Rechargeable magnesium batteries are identified as a promising next-generation energy storage system,but their development is hindered by the anode−electrolyte−cathode incompatibilities and passivation of magnesium metal anode.To avoid or alleviate these problems,the exploitation of alternative anode materials is a promising choice.Herein,we present titanium pyrophosphate(TiP_(2)O_(7))as anode materials for magnesium-ion batteries(MIBs)and investigate the effect of the crystal phase on its magnesium storage performance.Compared with the me-tastable layered TiP_(2)O_(7),the thermodynamically stable cubic TiP_(2)O_(7) displays a better rate capability of 72 mAh g^(−1) at 5000 mA g^(−1).Moreover,cubic TiP_(2)O_(7) exhibits excellent cycling stability with the capacity of 60 mAh g^(−1) after 5000 cycles at 1000 mA g^(−1),which are better than pre-viously reported Ti-based anode materials for MIBs.In situ X-ray diffraction technology confirms the single-phase magnesiumion inter-calation/deintercalation reaction mechanism of cubic TiP_(2)O_(7) with a low volume change of 3.2%.In addition,the density functional theory calcu-lation results demonstrate that three-dimensional magnesiumion diffu-sion can be allowed in cubic TiP_(2)O_(7) with a low migration energy barrier of 0.62 eV.Our work demonstrates the promise of TiP_(2)O_(7) as high-rate and long-life anode materials for MIBs and may pave the way for further development of MIBs. | Fangyu Xiong Yalong Jiang Li Cheng Ruohan Yu Shuangshuang Tan Chen Tang Chunli Zuo Qinyou An Yunlong Zhao Jean-Jacques Gaumet Liqiang Mai | 2022 | Interdisciplinary Materials2022，1，1： | 3 |
| 17 | Enhancing single-cell hyaluronic acid biosynthesis by microbial morphology engineering显示文摘Microbial morphology engineering is a novel approach for cell factory to improve the titer of target product in bio-manufacture.Hyaluronic acid(HA),a valuable glycosaminoglycan polymerized by HA synthase(HAS),a membrane protein,is particularly selected as the model product to improve its single-cell HA-producing capacity via morphology engineering.DivIVA and FtsZ,the cell-elongation and cell division related protein,respectively,were both down/up dual regulated in C.glutamicum via weak promoter substitution or plasmid overexpression.Different from the natural short-rod shape,varied morphologies of engineered cells,i.e.small-ellipsoid-like(DivIVA-reduced),bulb-like(DivIVA-enhanced),long-rod(FtsZ-reduced)and dumbbell-like(FtsZ-enhanced),were observed.Applying these morphology-changed cells as hosts for HA production,the reduced expression of both DivIVA and FtsZ seriously inhibited normal cell growth;meanwhile,overexpression of DivIVA didn't show morphology changes,but overexpression of FtsZ surprisingly change the cell-shape into long and thick rod with remarkably enlarged single-cell surface area(more than 5.2-fold-increase).And finally,the single-cell HA-producing capacity of the FtsZ-overexpressed C.glutamicum was immensely improved by 13.5-folds.Flow cytometry analyses verified that the single-cell HAS amount on membrane was enhanced by 2.1 folds.This work is pretty valuable for high titer synthesis of diverse metabolic products with microbial cell factory. | Yukun Zheng Fangyu Cheng Bo Zheng Huimin Yu | 2020 | Synthetic and Systems Biotechnology2020，5，4： | 3 |
| 18 | Novel hollow Ni0.33Co0.67Se nanoprisms for high capacity lithium storage显示文摘In this work,homogeneous Ni0.33Co0.67Se hollow nanoprisms were synthesized successfully in virtue of Kirkendall effect.It is the first time for bimetallic Ni-Co compounds Ni0.33Co0.67Se to be used in lithium-ion batteries (LIBs).Impressively,the Ni0.33Co0.67Se hollow nanoprisms show superior specific capacity (1,575 mAh/g at the current density of 100 mA/g) and outstanding rate performance (850 mAh/g at 2,000 mA/g) as anode material for LIBs.This work proves the potential of bimetallic chalcogenide compounds as high performance anode materials for LIBs. | Shaohua Zhu Cheng Chen Pan He Shuangshuang Tan Fangyu Xiong Ziang Liu Zhuo Peng Qinyou An Liqiang Mai | 2019 | Nano Research2019，12，6： | 3 |
| 19 | Strain glass transition in high damping Mn-22Cu-5Ni-2Fe alloy显示文摘It has been recognized that the high damping capacity of MnCu based alloys is closely related to the formation of elastic twins as a result of antiferromagnetic transition and martensitic transformation. However, the mechanism for these transitions in this kind of alloy has not been fully understood. For example, previous investigations ascribed the elastic modulus softening prior to martensitic transformation to antiferromagnetic or pre-martensitic transitions, although no convincing evidence was reported. In this paper, an intensive experimental study was made of the modulus softening and microstructural evolution in a typical high damping Mn-22Cu-5Ni-2 Fe alloy, and the evidence of strain glass transition was reported. Such a transition, characterized by a continuous formation of nano-martensite domains, is accompanied by a gradual frequency-dependent modulus softening over a broad temperature range prior to martensitic transformation. | Shiwen Hou Fangyu Qin Jingyun Han Wenlong Xiao Fengshuang Lu Xinqing Zhao | 2018 | Progress in Natural Science:Materials International2018，28，5： | 3 |
| 20 | Intelligent learning model-based skill learning and strategy optimization in robot grinding and polishing显示文摘With the rapid advancement of manufacturing in China,robot machining technology has become a popular research subject.An increasing number of robots are currently being used to perform complex tasks during manual operation,e.g.,the grinding of large components using multi-robot systems and robot teleoperation in dangerous environments,and machining conditions have evolved from a single open mode to a multisystem closed mode.Because the environment is constantly changing with multiple systems interacting with each other,traditional methods,such as mechanism modeling and programming are no longer applicable.Intelligent learning models,such as deep learning,transfer learning,reinforcement learning,and imitation learning,have been widely used;thus,skill learning and strategy optimization have become the focus of research on robot machining.Skill learning in robot machining can use robotic flexibility to learn skills under unknown working conditions,and machining strategy research can optimize processing quality under complex working conditions.Additionally,skill learning and strategy optimization combined with an intelligent learning model demonstrate excellent performance for data characteristics learning,multisystem transformation,and environment perception,thus compensating for the shortcomings of the traditional research field.This paper summarizes the state-of-the-art in skill learning and strategy optimization research from the perspectives of feature processing,skill learning,strategy,and model optimization of robot grinding and polishing,in which deep learning,transfer learning,reinforcement learning,and imitation learning models are integrated into skill learning and strategy optimization during robot grinding and polishing.Finally,this paper describes future development trends in skill learning and strategy optimization based on an intelligent learning model in the system knowledge transfer and nonstructural environment autonomous processing. | CHEN Chen WANG Yu GAO ZhiTao PENG FangYu TANG XiaoWei YAN Rong ZHANG YuKui | 2022 | Science China(Technological Sciences)2022，65，9： | 3 |
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