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31篇 您的检索式:作者名="Yanlong XU"
    题名 作者 年代 出处 被引量
1Bolt-grouting combined support technology in deep soft rock roadway显示文摘Analyzing the mineral composition, mechanical properties and ground stress testing in surrounding rock,the study investigated the failure mechanism of deep soft rock roadway with high stress. The boltgrouting combined support system was proposed to prevent such failures. By means of FLAC3D numerical simulation and similar material simulation, the feasibility of the support design and the effectiveness of support parameters were discussed. According to the monitoring the surface and deep displacement in surrounding rock as well as bolt axial load, this paper analyzed the deformation of surrounding rock and the stress condition of the support structure. The monitor results were used to optimize the proposed support scheme. The results of field monitors demonstrate that the bolt-grouting combined support technology could improve the surround rock strength and bearing capacity of support structure, which controlled the great deformation failure and rheological property effectively in deep soft rock roadway with high stress. As a result, the long term stability and safety are guaranteed.Chen Yanlong Meng Qingbin Xu Guang Wu Haoshuai Zhang Guimin 2016International Journal of Mining Science and Technology2016,26,5:10
2High-performance silicon−graphene hybrid plasmonic waveguide photodetectors beyond 1.55μm显示文摘Graphene has attracted much attention for the realization of high-speed photodetection for silicon photonics over a wide wavelength range.However,the reported fast graphene photodetectors mainly operate in the 1.55μm wavelength band.In this work,we propose and realize high-performance waveguide photodetectors based on bolometric/photoconductive effects by introducing an ultrathin wide silicon−graphene hybrid plasmonic waveguide,which enables efficient light absorption in graphene at 1.55μm and beyond.When operating at 2μm,the present photodetector has a responsivity of ~70 mA/W and a setup-limited 3 dB bandwidth of >20 GHz.When operating at 1.55μm,the present photodetector also works very well with a broad 3 dB bandwidth of >40 GHz(setup-limited)and a high responsivity of ~0.4 A/W even with a low bias voltage of−0.3 V.This work paves the way for achieving highresponsivity and high-speed silicon-graphene waveguide photodetection in the near/mid-infrared ranges,which has applications in optical communications,nonlinear photonics,and on-chip sensing.Jingshu Guo Jiang Li Chaoyue Liu Yanlong Yin Wenhui Wang Zhenhua Ni Zhilei Fu Hui Yu Yang Xu Yaocheng Shi Yungui Ma Shiming Gao Limin Tong Daoxin Dai 2020Light(Science & Applications)2020,9,1:10
3CONDITION MONITOR OF DEEP-HOLE DRILLING BASED ON MULTI-SENSOR INFORMATION FUSION显示文摘监视基于 multi-sensorinformation 熔化的深洞的钻的方法的一个条件被讨论。当在不锈钢 0Crl7Ni4Cu4Nb 上的深洞的钻的条件正常或反常时,颤动和切的力量的信号被收集。Foureigenvectors 在时间域和信号的频率域分析上被提取。然后,四特徵向量被联合并且送到神经网络处理。熔化结果显示那多传感器信息熔化比单个传感器的信息,和那个切的力量信号优异能比颤动信号更好反映切削工具的条件。XU Xusong CAO Yanlong YANG Jiangxin 2006Chinese Journal of Mechanical Engineering2006,19,1:7
4Structure insights into mechanisms of ATP hydrolysis and the activation of human heat-shock protein 90显示文摘分子的女伴热吃惊蛋白质 90 的激活(Hsp90 ) 依赖于 ATP 绑定和水解作用,它发生在蛋白质的 N 终端域。这里,我们与 ATP 和 ATP 类似物在土著人并且在建筑群决定了人的 Hsp90 的 N 终端领域的三水晶结构,提供由 Hsp90 的 ATP 水解作用的催化机制的一个清楚的看法。另外, ATP 的绑定导致 N 终端领域是能被用来部分解释 Hsp90 的孤立的 N 终端领域为什么举办很弱的 ATP hydrolytic 活动的一个中间的状态。Jian Li Lihua Sun Chunyan Xu Feng Yu Huan Zhou Yanlong Zhao Jian Zhang Jianhua Cai Cheney Mao Lin Tang Yechun Xu Jianhua He 2012Acta Biochimica et Biophysica Sinica2012,44,4:5
5Decentralized Attribute-Based Encryption and Data Sharing Scheme in Cloud Storage显示文摘In this paper, we consider the problems of data sharing between multiple distrusted authorities. Prior solutions rely on trusted third parties such as CAs, or are susceptible to collusion between malicious authorities, which can comprise the security of honest ones. In this paper, we propose a new multi-authority data sharing scheme – Decentralized Multi-Authority ABE(DMA), which is derived from CP-ABE that is resilient to these types of misbehavior. Our system distinguishes between a data owner(DO) principal and attribute authorities(AAs): the DO owns the data but allows AAs to arbitrate access by providing attribute labels to users. The data is protected by policy encryption over these attributes. Unlike prior systems, attributes generated by AAs are not user-specific, and neither is the system susceptible to collusion between users who try to escalate their access by sharing keys. We prove our scheme correct under the Decisional Bilinear Diffie-Hellman(DBDH) assumption; we also include a complete end-to-end implementation that demonstrates the practical efficacy of our technique.Xiehua Li Yanlong Wang Ming Xu Yaping Cui 2018China Communications2018,15,2:4
6Chemically robust carbon nanotube-PTFE superhydrophobic thin films with enhanced ability of wear resistance显示文摘A chemically robust superhydrophobic nanocomposite thin film with enhanced wear resistance is prepared from a composite comprising polytetrafluoroethylene(PTFE) and carbon nanotubes.The superhydrophobic thin films with hierarchical structure are fabricated by spraying an environmentally friendly aqueous dispersion containing carbon nanotubes and PTFE resin on silicon wafer.Thin films with a contact angle of 154.1°± 2° and a sliding angle less than 2° remain superhydrophobic after abrading over 500 times under a pressure of 50 g/cm^2.The thin film is also extremely stable even under much stress conditions.To further the understanding of the enhancement of wear resistance,we investigated the formation of microsized structure and their effects.The growth of microbumps is caused by attracting solution droplet to the hydrophilic islands on hydrophobic surface.Kewei Wang Pan Xiong Xiuping Xu Kan Wang YanLong Li Yufeng Zheng 2017Progress in Natural Science:Materials International2017,27,3:4
7Recent Advances in Closed Loop Spray Cooling and its Application in Airborne Systems显示文摘In recent years,the problem of heat dissipation in airborne directed energy weapons has attracted considerable research interest.Spray cooling can be applied to cool airborne directed energy weapons,owing to its several advantages such as a large heat transfer coefficient,absence of boiling hysteresis and uniform surface temperature.To examine the potential of an airborne spray cooling system,the typical high heat flux dissipation methods were compared,and the state of the art research on spray cooling was reviewed.This review was focused on studies related to the spray cooling hydrodynamic mechanism,experimental studies of closed loop spray cooling,numerical simulation studies about spray cooling and the identification of the factors influencing spray cooling systems,and investigations related to the multiple nozzle spray cooling technology and heat transfer correlation predictions.Overall,there is a need for further research to investigate the failure phenomenon after the critical state,matching operation of the total system and microscopic characteristics of airborne specific parameters.XU Xinjie WANG Yu JIANG Yanlong LIU Jinxiang YUAN Xiaolei 2021Journal of Thermal Science2021,30,1:3
8Effects of wind guide plates on wind velocity acceleration and dune leveling: a case study in Ulan Buh Desert, China显示文摘The areas used to be covered by shifting sand dunes have been reclaimed rapidly in recent years. However, it is a challenge to reclaim high sand dunes because it is rather costly to level the high dunes to gentle arable lands. In this study, a wind guide plate was used to change the characteristics of natural wind to level the sand dunes. The use of wind energy could significantly increase the efficiency of dune leveling and decrease the cost. Low wind velocity is a typical characteristic in Ulan Buh Desert of China where the average wind speed is much lower than the threshold velocity for sand movement. The experiment of this study was conducted to accelerate the wind velocity by a wind guide plate to level a sand dune. Results show that the threshold velocity for sand movement is 3.32 m/s at 10 cm above the sand surface in Ulan Buh Desert. A wind guide plate set at an angle less than 50° could significantly increase the wind velocity. The wind velocity could be accelerated up to the threshold velocity for sand movement behind a plate when the plate is at the angles of 20°, 25°, 35° and 40°. The most significant acceleration of wind velocity appears at 1.5 and 3.0 m behind the plate with an angle of 25°. An obvious wind velocity acceleration zone exists behind the wind guide plate when the angles are at 25°, 35°, 40° and 45°, with the most obvious zone under the angle of 45°. The results also show that the total amount of sand transferred over the experimental period increased by 6.1% under the effects of wind guide plates compared to the sand moved without wind guide plates. The results of the study will provide theoretical and practical supports for desert management in sand dune areas.HAN Yanlong GAO Yong MENG Zhongju DANG Xiaohong JIA Xu DING Yanlong LI Peng 2017Journal of Arid Land2017,9,5:2
9Information Security Protocol Based System Identification with Binary-Valued Observations显示文摘XU Changbao ZHAO Yanlong ZHANG Ji-Feng 2018Journal of Systems Science & Complexity2018,31,4:2
10Minimizing Carbon Content with Three-in-One Functionalized Nano Conductive Ceramics:Toward More Practical and Safer S Cathodes of Li-S Cells显示文摘Using porous carbon hosts in cathodes of Li-S cells can disperse S actives and offset their poor electrical conductivity.However,such reservoirs would in turn absorb excess electrolyte solvents to S-unfilled regions,causing the electrolyte overconsumption,specific energy decline,and even safety hazards for battery devices.To build better cathodes,we propose to substitute carbons by In-doped SnO_(2)(ITO)nano ceramics that own three-in-one functionalities:1)using conductive ITO enables minimizing the total carbon content to an extremely low mass ratio(~3%)in cathodes,elevating the electrode tap density and averting the electrolyte overuse;2)polar ITO nanoclusters can serve as robust anchors toward Li polysulfide(LiPS)by electrostatic adsorption or chemical bond interactions;3)they offer catalysis centers for liquid–solid phase conversions of S-based actives.Also,such ceramics are intrinsically nonflammable,preventing S cathodes away from thermal runaway or explosion.These merits entail our configured cathodes with high tap density(1.54 g cm^(−3)),less electrolyte usage,good security for flame retardance,and decent Li-storage behaviors.With lean and LiNO_(3)-free electrolyte,packed full cells exhibit excellent redox kinetics,suppressed LiPS shuttling,and excellent cyclability.This may trigger great research enthusiasm in rational design of low-carbon and safer S cathodes.Ning Li Chang Sun Jianhui Zhu Shun Li Yanlong Wang Maowen Xu Changming Li Jian Jiang 2023Energy & Environmental Materials2023,6,3:1
11Clinical Pathologic Study on Effect of Qianggan Capsule (强肝胶囊) in Treating Patients of Chronic Hepatitis B with Liver Cirrhosis显示文摘Objective: To explore the clinical therapeutic effect of Qianggan Capsule (QGC) in treating chronic hepatitis B with liver fibrosis from the pathological aspect. Methods: Sixty three patients of chronic hepatitis B with liver fibrosis were randomly divided into the treated group (n=45) and the control group (n=18). Both groups were treated with general liver protective drugs, such as Glucurone and vitamins B complex for 6 months. To the treated group, QGC was used additionally. The levels of serum alanine transaminase and liver fibrosis indexes including hyaluronic acid (HA), collagen type Ⅳ (C Ⅳ) and laminin (LN) as well as the pathological examination of liver biopsy were observed before and after treatment. Results: The liver cirrhosis indexes, HA, C Ⅳ and LN, were improved significantly in the treated group after treatment, P <0.05. The liver function improvement rate in the treated group and the control group was 90.3% and 66.7% respectively, comparison of the two groups showed insignificant difference, P >0.05. Pathological examination showed that the effective rate of treatment on liver inflammatory necrosis activity grade in the treated group was 57.8% and that on liver fibrosis stage was 75.6%, which were significantly improved as compared with those before treatment ( P <0.05 and P <0.01), while in the control group, no significant improvement was found after treatment ( P >0.05). Conclusion: QGC has marked effects in reversing liver fibrosis and alleviating hepatic inflammatory necrosis in patients of chronic hepatitis B with liver fibrosis, and could lower the serum liver fibrosis related indexes effectively.YANG Liuming(杨柳明) ZHAO Yanlong(赵延龙) WU Zhirong(吴志荣) CHEN Dufang(陈杜芳) CHEN Zhuoying(岑卓英) XU Kecheng(徐克成) ZUO Jiansheng(左建生) WEI Beihai(危北海) ZHANG Wandai(张万岱) 2002Chinese Journal of Integrative Medicine2002,8,2:1
12Decision-implementation complexity of cooperative game systems显示文摘This paper focuses on the decision-implementation complexity(DIC) of cooperative games. The complexity of a control law is a fundamental issue in practice because it is closely related to control cost. First,we formulate implementation measures of strategies as system control protocols. Then, for a class of cooperative games, a decision-implementation system model is established, and an energy-based DIC index is given as the energy expectation under Nash equilibrium strategies. A definition of DIC is presented to describe the optimal values of the DIC index. DIC is calculated by the exhaust algorithm in some specific cases, whereas the one for general cases is too complex to be calculated. In order to obtain a general calculation method, the problem is described in the form of matrices; an analytical expression describing DIC is obtained by using the properties of matrix singular values. Furthermore, when only partial information of actions is shared among players, DIC can be reduced and an improved protocol can be designed as a two-phase protocol. A numerical example is given to show that the DIC obtained in this study is the same as the one obtained by the exhaust algorithm, and that the calculation complexity of the proposed algorithm is much lower.Changbao XU Yanlong ZHAO Ji-Feng ZHANG 2017Science China(Information Sciences)2017,60,11:1
13Manu- facturing error modeling based on homogeneous transforma- tion显示文摘XU Xusong YANG Jiangxin CAO Yanlong et ai 2008Journal of Zhejiang University: Engineering Sci- ence2008,42,6:1
14Induction of Foxp3 demethylation increases regulatory CD4 + CD25 + T cells and prevents the occurrence of diabetes in mice显示文摘Qanhui Zheng Yamei Xu Yanlong Liu Baojun Zhang Xiaokun Li Feng Guo Yong Zhao 2009Journal of Molecular Medicine2009,,12:1
15Recent advancements in plasmon-enhanced visible light-driven water splitting显示文摘Recently,the combination of plasmonic noble metallic nanostructures with semiconductors for plasmonenhanced visible light-driven water splitting(WS)has attracted considerable attention.This review first presents three prime enhancement mechanisms for plasmon-enhanced photocatalytic WS,and then some state-of-the-art representative studies are introduced according to different enhancement mechanisms.Furthermore,the design parameters of plasmonic-metal/semiconductor photocatalysts are discussed in detail,focusing on the effect of shape,size and geometric position of metallic nanostructures on the photocatalytic activity of visible light-driven WS.Finally,the challenges and perspectives for plasmon-enhanced solar WS are proposed.Qingzhe Zhang Deepak Thrithamarassery Gangadharan Yanlong Liu Zhenhe Xu Mohamed Chaker Dongling Ma 2017Journal of Materiomics2017,3,1:1
16Surface Modification of 316L Stainless Steel by Grafting Methoxy Poly(ethylene glycol) to Improve the Biocompatibility显示文摘XIAO Yanlong ZHAO Lei SHI Yongfeng LIU Ning LIU Yongli LIU Bin XU Qinghua HE Chaoliang CHEN Xuesi 2015Chemical Research in Chinese Universities2015,31,4:1
17Ratiometric recognition of humidity by a europium-organic framework equipped with quasi-open metal site显示文摘Open metal site(OMS)seated in a luminescent lanthanide(Ln)metal center offers an opportunity for rationally tuning the spectroscopic behavior of lanthanide-organic frameworks aiming for a wide range of sensing applications.However,given the spherical nature of common coordination geometries of trivalent lanthanides and the generally strong Ln–O bonds,the lanthanide based OMS is rarely reported and difficult to be functionalized.We report here a unique europium-organic framework containing abundant quasi-OMS that is protected by an abnormal weak Eu–O bond.These quasi-OMSs offer reversible direct binding sites for water molecules probed by X-ray crystallography,leading to sensitive,visible,and ratiometric luminescent sensing toward humidity and water content in organic solvents.The specific recognition of water based on quasi-luminescentOMSs gives rise to a superior water detection limit down to 0.0003%v/v,which is one order of magnitude lower than that of Karl Fischer method.Wei Zhang Jian Xie Zhuyin Sui Zhijun Xu Xiaoze Wang Min Lei Hongfa Zhang Zhongyue Li Yanlong Wang Wei Liu Wei Du Shuao Wang 2021Science China Chemistry2021,64,10:1
18Silicon-graphene photonic devices显示文摘Silicon photonics has attracted much attention because of the advantages of CMOS(complementary-metal-oxide-semiconductor) compatibility, ultra-high integrated density, etc. Great progress has been achieved in the past decades. However, it is still not easy to realize active silicon photonic devices and circuits by utilizing the material system of pure silicon due to the limitation of the intrinsic properties of silicon. Graphene has been regarded as a promising material for optoelectronics due to its unique properties and thus provides a potential option for realizing active photonic integrated devices on silicon. In this paper, we present a review on recent progress of some silicon-graphene photonic devices for photodetection, all-optical modulation, as well as thermal-tuning.Yanlong Yin Jiang Li Yang Xu Hon Ki Tsang Daoxin Dai 2018Journal of Semiconductors2018,39,6:0
19Sound radiation attenuation by circular total-reflection elastic metasurface composed of subunits with cubic profiles显示文摘Utilizing metamaterials or acoustic black holes(ABHs)to control wave propagation and then to realize vibration control and sound radiation attenuation is a hot topic in recent years.However,using elastic metasurfaces that possess similar wave manipulation abilities with metamaterials and ABHs to attenuate sound radiation has not been reported yet.In this paper,a circular total-reflection elastic metasurface(CTREM)composed of subunits with cubic profiles similar with ABHs is proposed to realize vibration isolation and achieve broadband sound radiation attenuation of a plate below the cut-on frequency of the ABH.Compared with the corresponding bare plate and the plate containing a single ABH with a conventional design,the sound radiation efficiencies of the CTREM plate within and outside the vibration isolation band are both substantially attenuated.This phenomenon can be attributed to two distinct mechanisms:the total reflection of flexural waves caused by vibration isolation,and the local resonances of subunits.Analyses of the wavenumber spectra obtained from normal vibration velocities of the CTREM plate,both experimentally and numerically,along with the supersonic intensity patterns,reveal that the confined vibration energies are subsonic components localized within ineffective sound radiation areas.This,in turn,reduces the coupling strength of sound and vibration,thereby significantly attenuating sound radiation efficiency.The proposed CTREM provides a lossless and lightweight method for sound radiation attenuation.Feng LIU Zhichun YANG Pengtao SHI Yizhou SHEN Yanlong XU 2023Chinese Journal of Aeronautics2023,36,11:0
20A multi-module with a two-way feedback method for Ulva drift-diffusion显示文摘The outbreak of Ulva in the Yellow Sea has seriously affected marine ecology and economic activities.Therefore,effective prediction of the distribution of Ulva is of great significance for disaster prevention and reduction.However,the prediction method of Ulva is mainly based on numerical simulation.There are two problems with these methods.First is that the initial distribution of Ulva is simulated using independent pixel-level particles.Besides,the influence of Ulva growth and diffusion on the drift is not considered.Therefore,this paper proposes a multi-module with a two-way feedback method(MTF)to solve the above problems.The main contributions of our approach are summarized as follows.First,the initialization module,the generation and elimination module,and the drive module are composed in our way.Second,we proposed an initialization method using rectangle objects to simulate the Ulva distribution extracted from remote sensing images.Thirdly,the drift and diffusion mechanism of the Ulva is considered to realize the two-way feedback between the generation and elimination module and the drive module.The results of our experiments show that the MTF performs better than the traditional method in predicting the drift and diffusion of Ulva.The code is already publicly available at http://gffzz188fe103f8f1460asnkq65xbpbuvp6vk0.ffgz.tsg.suse.edu.cn/UPCGIT/A-multi-module-with-a-two-way-feedback-method-for-Ulva-drift-diffusion.Hui Sheng Jianmeng Li Qimao Wang Bin Zou Lijian Shi Mingming Xu Shanwei Liu Jianhua Wan Zhe Zeng Yanlong Chen 2023Acta Oceanologica Sinica2023,42,12:0
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