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| 1 | Environmental variability study on the measured responses of Runyang Cablestayed Bridge using wavelet packet analysis显示文摘The structural damage alarming method based on wavelet packet energy spectrum (WPES) for long-span cable-stayed bridges is presented through combination of ambient vibration test and wavelet packet analysis. The environmental variability in the measured WPES and damage alarming indices ERVD of the Runyang Cable-stayed Bridge are discussed in detail using the wavelet packet analysis of the measured acceleration responses of the bridge under daily environmental conditions. The analysis results reveal that the actual environmental conditions including traffic loadings, environmental temperature and typhoon loadings have remarkable correlations with the measured WPES. The changes of environmental temperature have a long-term trend influence on the WPES, while the influences of traffic and typhoon loadings on the measured WPES of the bridge present instantaneous changes because of the nonstationary properties of the loadings. The analysis results of the measured responses further reveal that the damage alarming indices ERVD can sensitively reflect the influences of environmental temperature and typhoon loadings on the dynamic properties of Runyang Cable-stayed Bridge. Therefore, the proposed structural damage alarming indices ERVD under ambient vibrations are suitable for real-time damage alarming for long-span cable-stayed bridges. | DING YouLiang LI AiQun LIU Tao | 2008 | Science China(Technological Sciences)2008，51，5： | 20 |
| 2 | SiO2气凝胶常压干燥工艺与隔热应用进展显示文摘综述了SiO2气凝胶常压制备技术及其复合隔热材料的最新研究进展。着重介绍了提高凝胶网络基架强度、添加干燥控制化学添加剂、表面改性、降低毛细管力等几种SiO2气凝胶常压干燥工艺,并回顾了几种SiO2气凝胶复合隔热材料的应用现状。 | 陈晓红 胡子君 宋怀河 王非 | 2010 | 宇航材料工艺2010，，6： | 18 |
| 3 | High-resolution 3D crustal S-wave velocity structure of the MiddleLower Yangtze River Metallogenic Belt and implications for its deep geodynamic setting显示文摘The Middle-Lower Yangtze River Metallogenic Belt(MLYMB) is an important mineral resource region in China.High-resolution crustal models can provide crucial constraints to understand the ore-forming processes and geodynamic setting in this region. Using ambient seismic noise from 107 permanent and 82 portable stations in the MLYMB and the adjacent area,we present a new high-resolution 3D S-wave velocity model of this region. We first extract 5–50 s Rayleigh wave phase velocity dispersion data by calculating ambient noise cross-correlation functions(CFs) and then use the surface wave direct inversion method to invert the mixed path travel times for the 3D S-wave velocity structure. Checkerboard tests show that the horizontal resolution of the 3D S-wave velocity model is approximately 0.5°–1.0° and that the vertical resolution decreases with increasing noise and depth. Our high-resolution 3D S-wave velocity model reveals:(1) AV-shaped high-velocity zone(HVZ) is located in the lower crust and the uppermost mantle in the study region. The western branch of the HVZ passes through the Jianghan Basin,the Qinling-Dabie orogenic belt and the Nanxiang Basin. The eastern branch, which almost completely covers the main body of the MLYMB, is located near the Tanlu Fault. The low-velocity anomalies between the western and eastern branches are located in the area of the Qinling-Dabie orogenic belt.(2) High-velocity uplifts(HVUs) are common in the crust of the MLYMB,especially in the areas near the Tanlu Fault, the Changjiang Fault and the Yangxin-Changzhou Fault. The intensities of the HVUs gradually weaken from west to east. The V-shaped HVZ in the lower crust and uppermost mantle and the HVUs in the middle and lower crust likely represent cooled mantle intrusive rocks. During the Yanshanian period, fault systems formed in the MLYMB due to the convergence between the South China Plate and the North China Plate, the multiple-direction drifting of the PaleoPacific Plate and its subduction beneath the Eurasian Plate. The dehydration of the cold oceanic crust led to partial melting in the upper mantle. Temperature differences caused strong convection of the upper mantle material that underplated the lower crust and rose to near the surface along the deep fault systems. After mixing with the crustal materials, mineralization processes, such as assimilation and fractional crystallization, occurred in the MLYMB. | Song LUO Huajian YAO Qiusheng LI Weitao WANG Kesong WAN Yafeng MENG Bin LIU | 2019 | Science China Earth Sciences2019，62，9： | 13 |
| 4 | Smart metasurface with self-adaptively reprogrammable functions显示文摘Intelligence at either the material or metamaterial level is a goal that researchers have been pursuing.From passive to active,metasurfaces have been developed to be programmable to dynamically and arbitrarily manipulate electromagnetic(EM)wavefields.However,the programmable metasurfaces require manual control to switch among different functionalities.Here,we put forth a smart metasurface that has self-adaptively reprogrammable functionalities without human participation.The smart metasurface is capable of sensing ambient environments by integrating an additional sensor(s)and can adaptively adjust its EM operational functionality through an unmanned sensing feedback system.As an illustrative example,we experimentally develop a motion-sensitive smart metasurface integrated with a three-axis gyroscope,which can adjust self-adaptively the EM radiation beams via different rotations of the metasurface.We develop an online feedback algorithm as the control software to make the smart metasurface achieve single-beam and multibeam steering and other dynamic reactions adaptively.The proposed metasurface is extendable to other physical sensors to detect the humidity,temperature,illuminating light,and so on.Our strategy will open up a new avenue for future unmanned devices that are consistent with the ambient environment. | Qian Ma Guo Dong Bai Hong Bo Jing Cheng Yang Lianlin Li Tie Jun Cui | 2019 | Light(Science & Applications)2019，8，1： | 13 |
| 5 | Femtosecond Laser Precision Engineering: From Micron, Submicron, to Nanoscale显示文摘As a noncontact strategy with flexible tools and high efficiency,laser precision engineering is a significant advanced processing way for high-quality micro-/nanostructure fabrication,especially to achieve novel functional photoelectric structures and devices.For the microscale creation,several femtosecond laser fabrication methods,including multiphoton absorption,laserinduced plasma-assisted ablation,and incubation effect have been developed.Meanwhile,the femtosecond laser can be combined with microlens arrays and interference lithography techniques to achieve the structures in submicron scales.Down to nanoscale feature sizes,advanced processing strategies,such as near-field scanning optical microscope,atomic force microscope,and microsphere,are applied in femtosecond laser processing and the minimum nanostructure creation has been pushed down to~25 nm due to near-field effect.The most fascinating femtosecond laser precision engineering is the possibility of large-area,high-throughput,and far-field nanofabrication.In combination with special strategies,including dual femtosecond laser beam irradiation,~15 nm nanostructuring can be achieved directly on silicon surfaces in far field and in ambient air.The challenges and perspectives in the femtosecond laser precision engineering are also discussed. | Zhenyuan Lin Minghui Hong | 2021 | Ultrafast Science2021，，1： | 13 |
| 6 | High-resolution crustal velocity imaging using ambient noise recordings from a high-density seismic array:An example from the Shangrao section of the Xinjiang basin,China显示文摘A profile of shallow crustal velocity structure(1–2 km) may greatly enhance interpretation of the sedimentary environment and shallow tectonic deformation.Recent advances in surface wave tomography, using ambient noise data recorded with high-density seismic arrays, have improved the understanding of regional crustal structure. As the interest in detailed shallow crustal structure imaging has increased, dense seismic array methods have become increasingly efficient. This study used a high-density seismic array deployed in the Xinjiang basin in southeastern China, to record seismic data, which was then processed with the ambient noise tomography method. The high-density seismic array contained 203 short-period seismometers, spaced at short intervals(~ 400 m). The array collected continuous records of ambient noise for 32 days. Data preprocessing,cross correlation calculation, and Rayleigh surface wave phase-velocity dispersion curve extraction, yielded more than 16,000 Rayleigh surface wave phase-velocity dispersion curves, which were then analyzed using the direct-inversion method. Checkerboard tests indicate that the shear wave velocity is recovered in the study area, at depths of 0–1.4 km,with a lateral image resolution of ~ 400 m. Model test results show that the seismic array effectively images a 50 m thick slab at a depth of 0–300 m, a 150 m thick anomalous body at a depth of 300–600 m, and a 400 m thick anomalous body at a depth of 0.6–1.4 km. The shear wave velocity profile reveals features very similar to those detected by a deep seismic reflection profile across the study area. This demonstrates that analysis of shallow crustal velocity structure provides high-resolution imaging of crustal features.Thus, ambient noise tomography with a high-density seismic array may play an important role in imaging shallow crustal structure. | Gaochun Wang Xiaobo Tian Lianglei Guo Jiayong Yan Qingtian Lyu | 2018 | Earthquake Science2018，31，5： | 9 |
| 7 | A Green Paradigm for Internet of Things: Ambient Backscatter Communications显示文摘Internet of Things (IoT) has attracted extensive interest from both academia and industries, and is recognized as an ultimate infrastructure to connect everything at anytime and anywhere. The implementation of IoT generally faces the challenges from energy constraint and implementation cost. In this paper, we will introduce a new green communication paradigm, the ambient backscatter (AmBC), that could utilize the environmental wireless signals for both powering a tiny-cost device and backscattering the information symbols. Specifically, we will present the basic principles of AmBC, analyze its features and advantages, suggest its open problems, and predict its potential applications for our future IoT. | Wei Zhang Yao Qin Wenjing Zhao Minzheng Jia Qiang Liu Ruisi He Bo Ai | 2019 | China Communications2019，16，7： | 9 |
| 8 | Florigen trafficking integrates photoperiod and temperature signals in Arabidopsis^FA显示文摘The transition to flowering is the most dra-matic phase change in flowering plants and is crucial for reproductive success. A complex regulatory network in plants has evolved to perceive and integrate the endog-enous and environmental signals. These signals perceived, including day length and temperature, converge to regu-late FLOWERING LOCUS T (FT), which encodes a mobile stimulus required for floral induction in Arabidopsis. Despite the discovery of modulation of FT messenger RNA (mRNA) expression by ambient temperature, whether the trafficking of FT protein is controlled in response to changes in growth temperature is so far unknown. Here, we show that FT transport from companion cells to sieve elements is controlled in a temperature-dependent manner. This process is mediated by multiple C2 domain and transmembrane region proteins (MCTPs) and a soluble N-ethylmaleimide-sensitive factor protein attach-ment protein receptor (SNARE). Our findings suggest that ambient temperatures regulate both FT mRNA expression and FT protein trafficking to prevent precocious flowering at low temperatures and ensure plant reproductive suc-cess under favorable environmental conditions. | Lu Liu Yu Zhang Hao Yu | 2020 | Journal of Integrative Plant Biology2020，62，9： | 7 |
| 9 | 环境温度周期变化下沥青混凝土路面粘弹性力学响应显示文摘为研究沥青混凝土路面在环境温度周期变化作用下的粘弹性力学响应规律,采用ABAQUS有限元软件建立分析模型。结合气温观测数据、热力学理论、粘弹性力学,分析路面温度应力变化规律,并提出以应力比冲量值衡量温度应力对路面的作用效果。研究结果表明:路面内温度应力随外界温度的变化而呈规律性变化,且存在一定的滞后性;一个日循环周期内,路面内部靠近路表部位的温度应力变化幅度要大于靠近底面部位的应力变化幅度;在低温季节中,面层中下部分的温度应力作用效果要大于面层顶部的温度应力作用效果;沥青混凝土的应力松弛效应在高温季节较为明显,而在低温季节则十分微弱。 | 赵岩荆 倪富健 | 2010 | 交通运输工程与信息学报2010，8，4： | 6 |
| 10 | High-resolution Rayleigh wave phase velocity maps from ambient noise tomography in North China显示文摘We presented high-resolution Rayleigh wave phase velocity maps at periods ranging from 5 s to 30 s in the northeast part of the North China Craton (NNCC). Continuous time-series of vertical component between October 2006 and December 2008, recorded by 187 broadband stations temporarily deployed in the NNCC region, have been cross-correlated to obtain estimated fundamental mode Rayleigh wave Green’s functions. Using the frequency and time analysis technique based on continuous wavelet transformation, we measured 3 667 Rayleigh wave phase velocity dispersion curves. High-resolution phase velocity maps at periods of 5, 10, 20 and 30 s were reconstructed with grid size 0.25°× 0.25°, which reveal lateral heterogeneity of shear wave structure in the crust and upper mantle of NNCC. For periods shorter than 10 s, the phase velocity variations are well correlated with the principal geological units in the NNCC, with low-speed anomalies corresponding to the major sedimentary basins and high-speed anomalies coinciding with the main mountain ranges. Within the period range from 20 s to 30 s, high phase velocity observed in eastern NCC is coincident with the thin crust, whereas low phase velocities imaged in central NCC is correlated to the thick crust. However, the low-velocity anomaly in the Beijing-Tianjin-Tangshan region displayed in the 20 s and 30 s phase maps may be associated with fluids. | Jiatie Pan Institute of Geophysics, China Earthquake Administration, Beijing 100081, China | 2012 | Earthquake Science2012，25，3： | 6 |
| 11 | Ambient noise near the sea-route显示文摘Ambient noise data measured in an experiment conducted in shallow water near a sea-route were analyzed. It was observed that, at low frequency, the horizontal correlation has an obvious difference from that predicted by the classical ambient noise model. The theoretical analyses show that this phenomenon is caused by wind noise together with the discrete shipping noise nearby. An ambient noise model was proposed to include the effects caused by both the noise sources. Data measured at different times verify that the proposed model can be used to forecast the ambient noise field in shallow water near the sea-route. | HE Li1,2, LI ZhengLin1,3 & PENG ZhaoHui1 1 National Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China 2 Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China 3 NanHai Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Haikou 570206, China | 2009 | Science China(Physics,Mechanics & Astronomy)2009，52，1： | 5 |
| 12 | Effect of ambient wind on pressure wave generated by high-speed train entering a tunnel显示文摘Using three-dimensional, unsteady N-S equations and k-ε turbulence model, the effect of ambient wind on the pressure wave generated by a high-speed train entering a tunnel was studied via numerical simulation. Pressure changes of the train surface and tunnel wall were obtained as well as the flow field around the train. Results show that when the train runs downwind, the pressure change is smaller than that generated when there is no wind. When the train runs upwind, the pressure change is larger. The pressure change is more sensitive in the upwind condition than in the downwind condition. Compared with no wind condition, when the wind velocity is 10 m/s and 30 m/s, the pressure amplitude on the train head is reduced by 2.8% and 10.5%, respectively. The wall pressure amplitude at 400 m away from the tunnel entrance is reduced by 2.4% and 13.5%, respectively. When the wind velocity is-10 m/s and-30 m/s, the pressure amplitude on the train head increases by 3.0% and 17.7%, respectively. The wall pressure amplitude at 400 m away from the tunnel entrance increases by 3.6% and 18.6%, respectively. The pressure waveform slightly changes under ambient wind due to the influence of ambient wind on the pressure wave propagation speed. | 周细赛 刘堂红 陈争卫 邹翔 刘东润 | 2017 | Journal of Central South University2017，24，6： | 5 |
| 13 | Recent Advances in Atmospheric Ionization Mass Spectrometry:Developments and Applications显示文摘Over the past 15 years,ambient ionization mass spectrometry has rapidly developed,greatly expanding the applications of single-cell analysis,food and agricultural,envi-ronmental,chemical analysis,biomedical analysis,mass spectrometry imaging,among other areas.Real time mass spectrometry evaluations of living sample,such as in vivo direct analysis for single cell,clinical applications,metabolic monitoring of living species and transient intermediates in organic reactions,have demonstrated the power and potential significance of ambient ionization mass spectrometry.Here-in,we want to introduce a partial of our works atmospheric ionization mass spec-trometry,related to ambient ionization mass spectrometry. | Yuling Li Yuqi Cao Yinlong Guo | 2020 | Chinese Journal of Chemistry2020，38，1： | 5 |
| 14 | Hexagonal boron nitride nanosheet for effective ambient N2 fixation to NH3显示文摘Industrial production of NH3 from N2 and H2 significantly relies on Haber-Bosch process,which suffers from high energy consume and CO2 emission.As a sustainable and environmentally-benign alternative process,electrochemical artificial N2 fixation at ambient conditions,however,is highly required efficient electrocatalysts.In this study,we demonstrate that hexagonal boron nitride nanosheet (h-BNNS) is able to electrochemically catalyze N2 to NH3.In acidic solution,h-BNNS catalyst attains a high NH3 formation rate of 22.4 μg·h-1·mg-1cat.and a high Faradic efficiency of 4.7% at-0.75 V vs.reversible hydrogen electrode,with excellent stability and durability.Density functional theory calculations reveal that unsaturated boron at the edge site can activate inert N2 molecule and significantly reduce the energy barrier for NH3 fonmation. | Ya Zhang Huitong Du Yongjun Ma Lei Ji Haoran Guo Ziqi Tian Hongyu Chen Hong Huang Guanwei Cui Abdullah M. Asiri Fengli Qu Liang Chen Xuping Sun | 2019 | Nano Research2019，12，4： | 5 |
| 15 | 国内环境媒体广告发展和应用研究显示文摘一、环境媒体的由来虽然环境媒体广告这一概念还不为人所熟知,但是早在19世纪的西方就已经出现过,上世纪90年代末,英国广告人第一次将环境媒体(ambient media)纳入学术领域,在经历了10多年发展之后的今天,环境媒体已经被确立为广告行业内的标准用语。确切来说,环境媒体不是单纯的某个媒体,而是某一类别媒体的总称,它是对非传统媒体的一种创意性开发,存在于我们周围环境的每一个角落,任何一种我们视线所及的事物都具备成为环境媒体的潜力。环境媒体广告具有可以结合使用主流传统媒体,也可以同等有效地用作独立媒体使用的灵活性。一个成功的环境媒体广告的关键是在选择最恰当的媒介载体的同时,将产品或服务的信息创意性地体现其中。 | 王彬彬 | 2016 | 新闻战线2016，，3： | 4 |
| 16 | Asymmetric photocurrent extraction in semitransparent laminated flexible organic solar cells显示文摘Scalable production methods and low-cost materials with low embodied energy are key to success for organic solar cells.PEDOT(PSS)electrodes meet these criteria and allow for low-cost and all solution-processed solar cells.However,such devices are prone to shunting.In this work we introduce a roll-to-roll lamination method to construct semitransparent solar cells with a PEDOT(PSS)anode and an polyethyleneimine(PEI)modified PEDOT(PSS)cathode.We use the polymer:PCBM active layer coated on the electrodes as the lamination adhesive.Our lamination method efficiently eliminates any shunting.Extended exposure to ambient degrades the laminated devices,which manifests in a significantly reduced photocurrent extraction when the device is illuminated through the anode,despite the fact that the PEDOT(PSS)electrodes are optically equivalent.We show that degradation-induced electron traps lead to increased trap-assisted recombination at the anode side of the device.By limiting the exposure time to ambient during production,degradation is significantly reduced.We show that lamination using the active layer as the adhesive can result in device performance equal to that of conventional sequential coating. | Jonas Bergqvist Thomas Osterberg Armantas Melianas Luis Ever Aguirre Zheng Tang Wanzhu Cai Zaifei Ma Martijn Kemerink Desta Gedefaw Mats R.Andersson Olle InganAs | 2018 | npj Flexible Electronics2018，2，1： | 4 |
| 17 | Modal identification of long-span Runyang Bridge using ambient responses recorded by SHMS显示文摘Runyang Bridge is a newly built cable-supported bridge that crosses the Yangtze River in China.The bridge is composed of one suspension bridge and one cable-stayed bridge.During the construction of the bridge,a structural health monitoring system(SHMS)was installed,which was designed by the Southeast University.Since the bridge was open to traffic,quantities of structural ambient responses have been recorded by the SHMS.And,it’s really important to extract structrural information from these records for health monitoring.This paper presents the study on modal identification of the bridge.The dynamic properites including modal frequencies,mode shapes and damping ratios are extracted from the ambient responses.Two identification methods are employed including the enhanced frequency domain decomposition and the stochastic subspace identification.The identified modal parameters from the two methods are compared.Results show that modal frequencies and mode shapes from the two methods are almost the same while the damping ratios are different. | QingGuo Fei AiQun Li XiaoLin Han ChangQing Miao | 2009 | Science China(Technological Sciences)2009，52，12： | 4 |
| 18 | Full scale experimental study of a small natural draft dry cooling tower for concentrating solar thermal power plant显示文摘Concentrating solar thermal power system can provide low carbon,renewable energy resources in countries or regions with strong solar irradiation.For this kind of power plant which is likely to be located in the arid area,natural draft dry cooling tower is a promising choice.To develop the experimental studies on small cooling tower,a 20 m high natural draft dry cooling tower with fully instrumented measurement system was established by the Queensland Geothermal Energy Centre of Excellence.The performance of this cooling tower was measured with the constant heat input of 600 kW and 840 kW and with ambient temperature ranging from 20 ℃ to 32 ℃.The cooling tower numerical model was refined and validated with the experimental data.The model of 1 MW concentrating solar thermal supercritical CO2 power cycle was developed and integrated with the cooling tower model.The influences of changing ambient temperature and the performance of the cooling tower on efficiency of the power system were simulated.The differences of the mechanism of the ambient temperature effect on Rankine cycle and supercritical CO2 Brayton cycle were analysed and discussed. | Xiaoxiao Li Sam Duniam Hal Gurgenci Zhiqiang Guan Anand Veeraragavan 侯恩哲 | 2017 | 建筑节能2017，45，5： | 4 |
| 19 | 谷氨酰胺对高温下游泳大鼠LA、CPK、游泳时间及骨骼肌的影响显示文摘目的探讨高温环境下运动机体补充外源性谷氨酰胺(G ln)对抗疲劳能力的影响。方法在仿真模拟热气候舱内[环境温度(39.5±0.5)℃,相对湿度(70±3)%]大鼠采用力竭性游泳运动方式,通过补充G ln对比实验,观察力竭运动后大鼠的存活时间以及血清中乳酸(LA)含量、肌酸磷酸激酶(CPK)、游泳时间和骨骼肌组织学的变化。结果在36℃水温中游泳50 m in后补充谷氨酰胺组大鼠血清LA、CPK活力低于对照组(P<0.01),力竭性游泳时间为(85.5±10.0)m in,较对照组的(55.0±7.1)m in明显延长。结论补充谷氨酰胺可明显提高机体在高温环境下的抗疲劳能力。 | 沈阿丹 王吴军 | 2010 | 临床军医杂志2010，38，6： | 4 |
| 20 | Enabling robust and hour-level organic long persistent luminescence from carbon dots by covalent fixation显示文摘The first carbon dot(CD)-based organic long persistent luminescence(OLPL)system exhibiting more than 1 h of duration was developed.In contrast to the established OLPL systems,herein,the reported CDs-based system(named m-CDs@CA)can be facilely and effectively fabricated using a household microwave oven,and more impressively,its LPL can be observed under ambient conditions and even in aqueous media.XRD and TEM characterizations,afterglow decay,time-resolved spectroscopy,and ESR analysis were performed,showing the successful composition of CDs and.CA,the formation of exciplexes and long-lived charged-separated states.Further studies suggest that the production of covalent bonds between CA and CDs plays pivotal roles in activating LPL and preventing its quenching from oxygen and water.To the best of our knowledge,this is a very rare example of an OLPL system that exhibits hourlevel afterglow under ambient conditions.Finally,applications of m-CDs@C.A in glow-in-the-dark paints for emergency signs and multicolored luminous pearls were preliminarily demonstrated.This work may provide new insights for the development of rare earth-free and robust OLPL materials. | Kai Jiang Yuci Wang Cunjian Lin Licheng Zheng Jiaren Du Yixi Zhuang Rongjun Xie Zhongjun Li Hengwei Lin | 2022 | Light(Science & Applications)2022，11，4： | 3 |
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