|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Parallel Reinforcement Learning-Based Energy Efficiency Improvement for a Cyber-Physical System显示文摘As a complex and critical cyber-physical system(CPS),the hybrid electric powertrain is significant to mitigate air pollution and improve fuel economy.Energy management strategy(EMS)is playing a key role to improve the energy efficiency of this CPS.This paper presents a novel bidirectional long shortterm memory(LSTM)network based parallel reinforcement learning(PRL)approach to construct EMS for a hybrid tracked vehicle(HTV).This method contains two levels.The high-level establishes a parallel system first,which includes a real powertrain system and an artificial system.Then,the synthesized data from this parallel system is trained by a bidirectional LSTM network.The lower-level determines the optimal EMS using the trained action state function in the model-free reinforcement learning(RL)framework.PRL is a fully data-driven and learning-enabled approach that does not depend on any prediction and predefined rules.Finally,real vehicle testing is implemented and relevant experiment data is collected and calibrated.Experimental results validate that the proposed EMS can achieve considerable energy efficiency improvement by comparing with the conventional RL approach and deep RL. | Teng Liu Bin Tian Yunfeng Ai Fei-Yue Wang | 2020 | IEEE/CAA Journal of Automatica Sinica2020，7，2： | 14 |
| 2 | Lumbar spine superior-level facet joint violations: percutaneous versus open pedicle screw insertion using intraoperative 3-dimensional computer-assisted navigation显示文摘 | Tian Wei Xu Yunfeng Liu Bo Liu Yajun He Da Yuan Qiang Lang Zhao Lyu Yanwei Han Xiaoguang Jin Peihao | 2014 | Chinese Medical Journal2014，，22： | 10 |
| 3 | Anti-inflammatory activity of curcumin-loaded tetrahedral framework nucleic acids on acute gouty arthritis显示文摘Gouty arthritis is a very familiar inflammatory arthritis.Controlling inflammation is the key to preventing gouty arthritis.However,colchicine,the most highly represented drug used in clinical practice,has strict contraindications owing to some severe side effects.Curcumin(Cur),a natural anti-inflammatory drug,has demonstrated good safety and efficacy.However,the rapid degradation,poor aqueous solubility,and low bioavailability of Cur limit its therapeutic effect.To strengthen the effectiveness and bioavailability of Cur.Cur loaded tetrahedral framework nucleic acids(Cur-TFNAs)were synthesized to deliver Cur.Compared with free Cur,Cur-TFNAs exhibit a preferable drug stability,good biocompatibility(CCK-8 assay),ease of uptake(immunofluorescence),and higher tissue utilization(in vivo biodistribution).Most importantly,Cur-TFNAs present better anti-inflammatory effect than free Cur both in vivo and in vitro experiments through the determination of inflammation-related cytokines expression.Therefore,we believe that Cur-TFNAs have great prospects for the prevention of gout and similar inflammatory diseases. | Mei Zhang Xiaolin Zhang Taoran Tian Qi Zhang Yuting Wen Junyao Zhu Dexuan Xiao Weitong Cui Yunfeng Lin | 2022 | Bioactive Materials2022，7，2： | 10 |
| 4 | The fabrication of biomimetic biphasic CAN-PAC hydrogel with a seamless interfacial layer applied in osteochondral defect repair显示文摘Cartilage tissue engineering based on biomimetic scaffolds has become a rapidly developing strategy for repairing cartilage defects. In this study, a biphasic CAN-PAC hydrogel for osteochondral defect(OCD)regeneration was fabricated based on the density difference between the two layers via a thermally reactive,rapid cross-linking method. The upper hydrogel was cross-linked by CSMA and NIPAm, and the lower hydrogel was composed of PECDA, AAm and PEGDA. The interface between the two layers was first grafted by the physical cross-linking of calcium gluconate and alginate, followed by the chemical cross-linking of the carbon-carbon double bonds in the other components. The pore sizes of the upper and lower hydrogels were ~ 187.4 and ~ 112.6 μm, respectively. The moduli of the upper and lower hydrogels were ~ 0.065 and~ 0.261 MPa. This prepared bilayer hydrogel exhibited the characteristics of mimetic composition, mimetic structure and mimetic stiffness, which provided a microenvironment for sustaining cell attachment and viability. Meanwhile, the biodegradability and biocompatibility of the CAN-PAC hydrogel were examined in vivo. Furthermore, an osteochondral defect model was developed in rabbits, and the bilayer hydrogels were implanted into the defect. The regenerated tissues in the bilayer hydrogel group exhibited new translucent cartilage and repaired subchondral bone, indicating that the hydrogel can enhance the repair of osteochondral defects. | Jinfeng Liao Taoran Tian Sirong Shi Xueping Xie Quanquan Ma Guo Li Yunfeng Lin | 2017 | Bone Research2017，5，2： | 10 |
| 5 | Effects of tetrahedral framework nucleic acid/wogonin complexes on osteoarthritis显示文摘Osteoarthritis, a disorder characterized by articular cartilage deterioration, varying degrees of inflammation, and chondrocyte apoptosis, is the most common chronic joint disease. To slow or reverse its progression, inflammation should be inhibited, and chondrocyte proliferation should be promoted. Tetrahedral framework nucleic acids can be internalized by chondrocytes(even inflammatory chondrocytes) and can enhance their proliferation and migration. Wogonin, a naturally occurring flavonoid,suppresses oxidative stress and inhibits inflammation. In this study, tetrahedral framework nucleic acids were successfully selfassembled and used to load wogonin. We confirmed the effective formation of tetrahedral framework nucleic acid/wogonin complexes by dynamic light scattering, zeta potential analysis, transmission electron microscopy, and fluorescence spectrophotometry. Tetrahedral framework nucleic acids, wogonin, and especially tetrahedral framework nucleic acid/wogonin complexes effectively alleviated inflammation in vitro and in vivo and prevented cartilage destruction. In addition, these materials remarkably downregulated the expression of inflammatory mediators and matrix metalloproteinases, upregulated chondrogenic markers, and promoted tissue inhibitor of metalloproteinase 1 and B-cell lymphoma 2 expression. In vivo, after treatment with tetrahedral framework nucleic acid/wogonin complexes, the bone mineral density in regenerated tissues was much higher than that found in the untreated groups. Histologically, the complexes enhanced new tissue regeneration, significantly suppressed chondrocyte apoptosis, and promoted chondrogenic marker expression. They also inhibited cell apoptosis, increased chondrogenic marker expression, and suppressed the expression of inflammatory mediators in osteoarthritis. Therefore, we believe that tetrahedral framework nucleic acid/wogonin complexes can be used as an injectable form of therapy for osteoarthritis. | Sirong Shi Yang Chen Taoran Tian Songhang Li Shiyu Lin Yuxin Zhang Xiaoru Shao Tao Zhang Yunfeng Lin Xiaoxiao Cai | 2020 | Bone Research2020，8，1： | 9 |
| 6 | Parallel Reinforcement Learning:A Framework and Case Study显示文摘In this paper, a new machine learning framework is developed for complex system control, called parallel reinforcement learning. To overcome data deficiency of current data-driven algorithms, a parallel system is built to improve complex learning system by self-guidance. Based on the Markov chain(MC) theory, we combine the transfer learning, predictive learning, deep learning and reinforcement learning to tackle the data and action processes and to express the knowledge. Parallel reinforcement learning framework is formulated and several case studies for real-world problems are finally introduced. | Teng Liu Bin Tian Yunfeng Ai Li Li Dongpu Cao Fei-Yue Wang | 2018 | IEEE/CAA Journal of Automatica Sinica2018，5，4： | 8 |
| 7 | Angiogenesis in a 3D model containing adipose tissue stem cells and endothelial cells is mediated by canonical Wnt signaling显示文摘Adipose-derived stromal cells(ASCs) have gained great attention in regenerative medicine. Progress in our understanding of adult neovascularization further suggests the potential of ASCs in promoting vascular regeneration, although the specific cues that stimulate their angiogenic behavior remain controversial. In this study, we established a three-dimensional(3D) angiogenesis model by co-culturing ASCs and endothelial cells(ECs) in collagen gel and found that ASC-EC-instructed angiogenesis was regulated by the canonical Wnt pathway. Furthermore, the angiogenesis that occurred in implants collected after injections of our collagen gelbased 3D angiogenesis model into nude mice was confirmed to be functional and also regulated by the canonical Wnt pathway. Wnt regulation of angiogenesis involving changes in vessel length, vessel density,vessel sprout, and connection numbers occurred in our system. Wnt signaling was then shown to regulate ASCmediated paracrine signaling during angiogenesis through the nuclear translocation of β-catenin after its cytoplasmic accumulation in both ASCs and ECs. This translocation enhanced the expression of nuclear cofactor Lef-1 and cyclin D1 and activated the angiogenic transcription of vascular endothelial growth factor A(VEGFA), basic fibroblast growth factor(bF GF), and insulin-like growth factor 1(IGF-1). The angiogenesis process in the 3D collagen model appeared to follow canonical Wnt signaling, and this model can help us understand the importance of the canonical Wnt pathway in the use of ASCs in vascular regeneration. | Xiaoxiao Cai Jing Xie Yang Yao Xiangzhu Cun Shiyu Lin Taoran Tian Bofeng Zhu Yunfeng Lin | 2017 | Bone Research2017，5，4： | 6 |
| 8 | The protective effect of tetrahedral framework nucleic acids on periodontium under inflammatory conditions显示文摘Periodontitis is a common disease that causes periodontium defects and tooth loss.Controlling inflammation and tissue regeneration are two key strategies in the treatment of periodontitis.Tetrahedral framework nucleic acids can modulate multiple biological behaviors,and thus,their biological applications have been widely explored.In this study,we investigated the effect of tFNAs on periodontium under inflammatory conditions.Lipopolysaccharide and silk ligature were used to induce inflammation in vivo and in vitro.The results displayed that tFNAs decreased the release of pro-inflammatory cytokines and levels of cellular reactive oxygen species in periodontal ligament stem cells,which promoted osteogenic differentiation.Furthermore,animal experiments showed that tFNAs ameliorated the inflammation of the periodontium and protect periodontal tissue,especially reducing alveolar bone absorption by decreasing inflammatory infiltration and inhibiting osteoclast formation.These findings suggest that tFNAs can significantly improve the therapeutic effect of periodontitis and have the great potential significance in the field of periodontal tissue regeneration. | Mi Zhou Shaojingya Gao Xiaolin Zhang Tianxu Zhang Tao Zhang Taoran Tian Songhang Li Yunfeng Lin Xiaoxiao Cai | 2021 | Bioactive Materials2021，6，6： | 5 |
| 9 | High performance and stability of double perovskite-type oxide NdBa0.5Ca0.5Co1.5Fe0.5O5+δas an oxygen electrode for reversible solid oxide electrochemical cell显示文摘In this study,we successfully synthesized double perovskite-type oxide NdBa0.5Ca0.5Co1.5Fe0.5O5+δ(NBCCF)using a conventional wet chemical method as the oxygen electrode for reversible solid oxide electrochemical cells(RSOCs).The polarization resistance(Rp)of the composite electrode NBCCFGd0.1Ce0.9O2(GDC)is only 0.079Ωcm^2 at 800℃under air.The single cell based on NBCCF-GDC electrode displays a peak power density of 0.941 W/cm^2 in fuel cell mode and a low Rp value of 0.134Ωcm^2.In electrolysis cell mode,the cell displays an outstanding oxygen evolution reaction(OER)activity and shows current density as high as 0.92 A/cm^2 with 50 vol%AH(Absolute Humidity)at 800℃and applied voltage of 1.3 V.Most importantly,the cell exhibits admirable durability of 60 h both in electrolysis mode and fuel cell mode with distinguished reversibility.All these results suggest that NBCCF is a promising candidate electrode for RSOC. | Yunfeng Tian Yun Liu Wenjie Wang Lichao Jia Jian Pu Bo Chi Jian Li | 2020 | Journal of Energy Chemistry2020，29，4： | 4 |
| 10 | Erythromycin loaded by tetrahedral framework nucleic acids are more antimicrobial sensitive against Escherichia coli(E.coli)显示文摘Erythromycin is a commonly used broad-spectrum antibiotic,but resistance to this antibiotic makes its use less effective.Considerable efforts,beside finding alternatives,are needed to enhance its antimicrobial effect and stability against bacteria.Tetrahedral framework nucleic acids(tFNAs),a novel delivery vehicle with a three-dimensional nanostructure,have been studied as a carrying platform of antineoplastic drugs.In this study,the use of tFNAs in delivering erythromycin into Escherichia coli(E.coli)was investigated for the first time.The tFNAs vehicle increased the bacterial uptake of erythromycin and promoted membrane destabilization.Moreover,it increased the permeability of the bacterial cell wall,and reduced drug resistance by improving the movement of the drug across the membrane.The tFNAs-based delivery system enhanced the effects of erythromycin against E.coli.It may therefore provide an effective delivery vehicle for erythromycin in targeting antibiotic-resistant bacteria with thick cell wall. | Yue Sun Yuhao Liu Bowen Zhang Shirong Shi Tao Zhang Dan Zhao Taoran Tian Qirong Li Yunfeng Lin | 2021 | Bioactive Materials2021，6，8： | 4 |
| 11 | Data-processing induced GPS-positioning error显示文摘Global Positioning System data processing is affected by many non-tectonic factors,including the common-mode errors(CME) in station-position time series.The characteristics and origins of CME are still not clear,due to uneven distribution of global GPS networks and the lack of reliable data of the position time series.In this work,data from 241 continuous GPS stations were reprocessed in a consistent way and the results were compared with those generated at Jet Propulsion Laboratory(JPL).Improvements of residual positions were obtained for many low-quality stations,especially those located in Asia and Australia. | Tian Yunfeng | 2012 | Geodesy and Geodynamics2012，3，3： | 3 |
| 12 | Study on Lightning Protection Design of DCS in a Nuclear Power Plant显示文摘DCS (distributed control system) plays a decisive role in the overall operation of a nuclear power plant. If DCS fails,it will seriously affect the normal production of nuclear power plant,causing great losses. So it is very important to take perfect lightning protection measures on DCS of the nuclear power plant. In this paper,according to the actual situation of DCS in a nuclear power plant,by controlling lightning point,securely booting lightning into the ground network,improving low-resistance ground network,eliminating ground loops,determining the safety space,surge protection of power and signal,a set of complete lightning protection design scheme was systematically put forward. Some specific lightning protection measures were highlighted,such as the DCS grounding,equipotential bonds and shields,and some specific considerations were put forward. All of these could offer reference in the practical application. | Jie Liu Yunfeng Zhu Fang Tian Jin Wang | 2013 | Meteorological and Environmental Research2013，4，10： | 3 |
| 13 | Transient deformation during the Milashan Tunnel construction in northern Sangri-Cuona Rift,southern Tibet,China observed by Sentinel-1 satellites显示文摘Using 3-year Sentinel-1 C-band synthetic aperture radar(SAR) data, we observed prominent ground subsidence around the construction site of the Milashan Tunnel, which is on top of the northern SangriCuona Rift(SCR) in southern Tibet. The most deformed area extends ~7 km in the north-south direction and ~6 km in the east-west direction, with a peak subsidence rate of over 10 mm/a in the line of sight direction of both the descending and ascending satellites. Aside from the long-term ground subsidence arising directly from underground water outflow and rock excavation, a regional aseismic fault slip episode is also evident. The aseismic slip event began in May 2016 and ended in July 2016. The surface aseismic displacements can be explained by normal faulting with mainly down-dip movement and a modest right-lateral strike-slip component on a nearly north-south trending fault. The aseismic deformation triggered by the Milashan Tunnel construction demonstrates the sensitive response of crustal-scale tectonics to human activity, which poses high seismic hazards for the heavily populated region. | Yunfeng Tian Jing Liu-Zeng Yi Luo Yongsheng Li Yingshun Hu Bin Gong Lizheng Liu Ping Guo Jingfa Zhang | 2018 | Science Bulletin2018，63，21： | 3 |
| 14 | Thermo-responsive stick-slip behavior of advancing water contact angle on the surfaces of poly(N-isopropylacrylamide)-grafted polypropylene membranes显示文摘Wettability of a solid surface is highly important to its practical application,especially for the surface that shows thermoresponsive properties.In this paper,we describe a thermo-responsive stick-slip behavior of water droplets on the surfaces of poly(N-isopropylacrylamide)(PNIPAM)-grafted polypropylene membranes.Field emission scanning electron microscope(FESEM) images elucidate that the morphology of PNIPAM-grafted membrane surface is thermo-responsive,i.e.,the surface becomes rougher above the lower critical solution temperature(LCST) of PNIPAM.On the surface of nascent polypropylene membranes,the water droplet shows a smooth motion resulting in advancing and receding water contact angles of 111° and ~65°,respectively.On the PNIPAM-grafted membrane surfaces,the water droplet shows a stick-slip pattern above the LCST,whereas it advances smoothly below the LCST.This phenomenon is reproducible and can be ascribed to the energy barriers enhanced by the shrink of PNIPAM chains above the LCST.We also find that the slip contact angle decreases from 102° to 92° after several stick-slip cycles.This decrease is attributed to the water adsorption on the grafted PNIPAM layer,which is confirmed by the continuous decrease of the receding water contact angle. | WAN LingShu,MENG XiangLin,YANG YunFeng,TIAN Jing & XU ZhiKang Key Laboratory of Macromolecular Synthesis and Functionalization,Ministry of Education Department of Polymer Science and Engineering,Zhejiang University,Hangzhou 310027,China | 2010 | Science China Chemistry2010，53，1： | 2 |
| 15 | Low-bandgap conjugated polymers based on benzodipyrrolidone with reliable unipolar electron mobility exceeding 1 cm^(2) V^(-1)s^(-1)显示文摘The employment of an intrinsic quinoidal building block,benzodipyrrolidone(BDP),on constructing conjugated polymers(PBDP-2F and PBDP-2CN)with high electron mobility and unipolar transport characteristic in polyethylenimine ethoxylated(PEIE)modified organic field-effect transistors(OFETs)is reported.The intrinsic quinoidal characteristic and excellent coplanarity of BDP can lower the lowest unoccupied molecular orbital(LUMO)levels and improve ordered interchain packing of the resulting polymers in solid states,which are favorable for electron-injection and transport.By using PEIE as the interlayer to block the hole injection,unipolar n-type transport characteristics with high electron mobility of 0.58 and 1.01 cm^(2) V^(-1)s^(-1)were achieved by the OFETs based on PBDP-2F and PBDP-2CN,respectively.More importantly,the extracted mobilities are highly reliable with the reliability factor of above 80%.To the best of our knowledge,PBDP-2CN is the very first quinoid-based conjugated polymer with reliable electron mobility exceeding 1 cm^(2) V^(-1)s^(-1).This work represents a significant step in exploring intrinsic quinoidal CPs for application in n-channel OFETs and logic complementary circuits. | Mingqun Yang Tian Du Xuxia Zhao Xuelong Huang Langheng Pan Shuting Pang Haoran Tang Zhongxiang Peng Long Ye Yunfeng Deng Mingliang Sun Chunhui Duan Fei Huang Yong Cao | 2021 | Science China Chemistry2021，64，7： | 1 |
| 16 | A comparative investigation on absorption performances of three expanded graphite-based complex materials for toluene显示文摘 | Shande Li Shuanghong Tian Yunfeng Feng Jiajia Lei Piaopiao Wang Ya Xiong | 2010 | Journal of Hazardous Materials2010，，1： | 1 |
| 17 | Parameter estimation for whole-body kinetic model of FDG metabolism显示文摘基于放射性的 tracer [18F ] 2-fluoro-2-deoxy-D-gluose (FDG ) ,正电子排放断层摄影术(宠物) ,和分隔空间当模特儿, tracer 运动学习成为了一个进口方法调查葡萄糖在人的身体的新陈代谢的动力学。在这,工作,为在心肌层的纸巾的 FDG 新陈代谢的三分隔空间、四参数的模型的运动参数,肺,肝,胃,怒气,胰,和髓通过一些动态 FDG 宠物实验被估计。和出版大脑和骨胳的肌肉参数,一个相对完全的整个身体的模型被介绍。在肝模型,从到肝的肝的动脉和门静脉的双血供应为参数评价被考虑,并且更精确的结果被获得用双输入而非单身者动脉输入。确定的整个身体的模型在人的身体提供 FDG 新陈代谢的功能的信息。进一步调查葡萄糖新陈代谢能被用来,并且也在人的身体被用于 FDG 新陈代谢的过程的模拟和可视化。 | CUI Yunfeng BAI Jing CHEN Yingmao TIAN Jiahe | 2006 | Progress in Natural Science:Materials International2006，16，11： | 1 |
| 18 | Pd-La_(0.6)Sr_(0.4)Co_(0.2)Fe_(0.8)O_(3-δ)composite as active and stable oxygen electrode for reversible solid oxide cells显示文摘To promote the electrocatalytic activity and stability of traditional(a_(0.6)Sr_(0.4)Co_(0.2)Fe_(0.8)O_(3-δ)(LSCF)oxygen electrodes in reversible solid oxide cells(RSOCs),conventional physical mixed method was used to prepare the Pd-LSCF composite oxygen electrode.The cell with Pd-LSCF|GDC|YSZ|Ni-YSZ configuration shows perfect electrochemical performance in both solid oxide fuel cell(SOFC)mode and solid oxide electrolysis cell(SOEC)mode.In the SOFC mode,the cell achieves a power density of 1.73 W/cm^(2)at800℃higher than that of the LSCF oxygen electrode with 1.38 W/cm^(2).In the SOEC mode,the current density at 1.5 V is 1.67 A/cm^(2)at 800℃under 50 vol%steam concentration.Moreover,the reversibility and stability of the RSOCs were tested during 192 h long-term reversible operation.The degradation rate of the cell is only 2.2%/100 h and 2.5%/100 h in the SOEC and the SOFC modes,respectively.These results confirm that compositing Pd with the LSCF oxygen electrode can considerably boost the electrochemical performance of LSCF electrode in RSOCs field. | Rui Yang Yunfeng Tian Yun Liu Jian Pu Bo Chi | 2023 | Journal of Rare Earths2023，41，4： | 1 |
| 19 | Enhanced n-Type Thermoelectric Performance of Conjugated Polymers Based on an Indandione-Terminated Quinoidal Unit through Comonomer Optimization显示文摘Comprehensive Summary Conjugated polymers(CPs)containing quinoidal units are promising in n-type organic thermoelectric materials because of their deep-positioned lowest unoccupied molecular orbital(LUMO)energy levels and planar conjugated backbones.Herein,three CPs have been synthesized by copolymerizing an indandione-terminated quinoidal unit with bithiophene derivatives.Owning to the high electron affinity of the indandione-terminated quinoidal unit,all polymers showed deep LUMO energy levels below-4.10 eV.Incorporating electron-withdrawing substituents(F or CN)on the bithiophene comonomer can further downshift the LUMO energy levels.As a result,a more efficient n-doping process can be realized when employing 4-(2,3-dihydro-1,3-dimethyl-1H-benzimidazol-2-yl)-N,N-dimethylbenzenamine(N-DMBI)as the dopant.Ultimately,the polymer with CN substituents delivered the best thermoelectric performance with a power factor of up to 2.14μW·m^(−1)·K^(−2),because it possessed the lowest LUMO energy level among the three CPs.This work highlights that the modulation of LUMO energy level is an effective strategy to optimize the thermoelectric performance of CPs. | Tian Du Yingying Liu Yunfeng Deng Yanhou Geng | 2023 | Chinese Journal of Chemistry2023，41，7： | 1 |
| 20 | Nitrogen fluorescence induced by the femtosecond intense laser pulses in air显示文摘Our experiments show that external focusing and initial laser energy strongly influences filament generated by the femtosecond Ti–sapphire laser in air. The experimental measurements show the filament length can be extended both by increasing the laser energy and focal length of focusing lens. On the other hand, the plasma fluorescence emission can be enhanced by increasing the laser energy with fixed focal length or decreasing the focal length. In addition, the collapse distance measured experimentally are larger than the calculated ones owing to the group-velocity-dispersion effect. In addition, we find that the line widths of the spectral lines from N2 is independent of filament positions, laser energies and external focusing. | He Li Suyu Li Shuchang Li Dunli Liu Dan Tian Anmin Chen Ying Wang Xiaowei Wang Yunfeng Zhang Mingxing Jin | 2016 | High Power Laser Science and Engineering2016，4，1： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员