|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Characteristics of Turbulent Transfer during Episodes of Heavy Haze Pollution in Beijing in Winter 2016/17显示文摘We analyzed the structure and evolution of turbulent transfer and the wind profile in the atmospheric boundary layer in relation to aerosol concentrations during an episode of heavy haze pollution from 6 December 2016 to 9 January 2017. The turbulence data were recorded at Peking University's atmospheric science and environment observation station. The results showed a negative correlation between the wind speed and the PM2.5 concentration. The turbulence kinetic energy was large and showed obvious diurnal variations during unpolluted(clean) weather, but was small during episodes of heavy haze pollution. Under both clean and heavy haze conditions, the relation between the non-dimensional wind components and the stability parameter z/L followed a 1/3 power law, but the normalized standard deviations of the wind speed were smaller during heavy pollution events than during clean periods under near-neutral conditions. Under unstable conditions, the normalized standard deviation of the potential temperatureσ_θ/|θ_*| was related to z/L, roughly following a –1/3 power law, and the ratio during pollution days was greater than that during clean days. The three-dimensional turbulence energy spectra satisfied a –2/3 power exponent rate in the high-frequency band. In the low-frequency band, the wind velocity spectrum curve was related to the stability parameters under clear conditions, but was not related to atmospheric stratification under polluted conditions. In the dissipation stage of the heavy pollution episode, the horizontal wind speed first started to increase at high altitudes and then gradually decreased at lower altitudes. The strong upward motion during this stage was an important dynamic factor in the dissipation of the heavy haze. | Yan REN Shuwen ZHENG Wei WEI Bingui WU Hongsheng ZHANG Xuhui CAI Yu SONG | 2018 | Journal of Meteorological Research2018，32，1： | 9 |
| 2 | Progress in electrolytes for beyond-lithium-ion batteries显示文摘The constant increase in global energy demand and stricter environmental standards are calling for advanced energy storage technologies that can store electricity from intermittent renewable sources such as wind,solar,and tidal power,to allow the broader implementation of the renewables.The gridoriented sodium-ion batteries,potassium ion batteries and multivalent ion batteries are cheaper and more sustainable alternatives to Li-ion,although they are still in the early stages of development.Additional optimisation of these battery systems is required,to improve the energy and power density,and to solve the safety issues caused by dendrites growth in anodes.Electrolyte,one of the most critical components in these batteries,could significantly influence the electrochemical performances and operations of batteries.In this review,the definitions and influences of three critical components(salts,solvents,and additives)in electrolytes are discussed.The significant advantages,challenges,recent progress and future optimisation directions of various electrolytes for monovalent and multivalent ions batteries(i.e.organic,ionic liquid and aqueous liquid electrolytes,polymer and inorganic solid electrolytes)are summarised to guide the practical application for grid-oriented batteries. | Juyan Zhang Xuhui Yao Ravi KMisra Qiong Cai Yunlong Zhao | 2020 | Journal of Materials Science & Technology2020，44，9： | 7 |
| 3 | Ionospheric electromagnetic perturbations observed on DEMETER satellite before Chile M7.9 earthquake显示文摘Based on the ionospheric electromagnetic data observed on DEMETER satellite of France, the ionospheric electromagnetic signals were analyzed within 10 days before Chile M7.9 earthquake on November 14, 2007. It is found that, low frequency electromagnetic disturbances began to increase in a large scale of latitude, and reached to a maximum one week prior to the earthquake, and at about three days before the quake, the peak values shifted to lower latitude. Taking three days as a group, spatial images of a few parameters were analyzed, from which it can be seen during the five days prior to this earthquake, the amplitude and scale of anomalies are enlarged, while the epicenter is located at the boundary of anomalous region. The anomalous tempo-spatial variation in electron density prior to the earthquake were also obtained in terms of tracing the data from revisited orbits in half a year prior to the quake. | Xuemin Zhang Jiadong Qian Xinyan Ouyang Xuhui Shen Jin'an Cai Shufan Zhao | 2009 | Earthquake Science2009，22，3： | 7 |
| 4 | Review of Chinese atmospheric science research over the past 70 years: Atmospheric physics and atmospheric environment显示文摘Since the founding of the People’s Republic of China 70 years ago,the subject of atmospheric physics and atmospheric environment has developed rapidly in China,providing important support for the development of atmospheric science and guarantee for the development of national economy.In this paper,the general advancement of atmospheric physics and atmospheric environment in last 70 years was described.The main research progress of atmospheric physics and atmospheric environment in the past 40 years of reform and opening-up was reviewed,the outstanding research achievements since the 21 st century were summarized,the major problems and challenges are pointed out,and the key directions and suggestions for future development are put forward. | Tijian WANG Taichang GAO Hongsheng ZHANG Maofa GE Hengchi LEI Peichang ZHANG Peng ZHANG Chunsong LU Chao LIU Hua ZHANG Qiang ZHANG Hong LIAO Haidong KAN Zhaozhong FENG Yijun ZHANG Xiushu QIE Xuhui CAI Mengmeng LI Lei LIU Shengrui TONG | 2019 | Science China Earth Sciences2019，62，12： | 5 |
| 5 | A study on atmospheric turbulence structure and intermittency during heavy haze pollution in the Beijing area显示文摘In this study,the characteristics of turbulence transport and intermittency and the evolutionary mechanisms were studied in different pollution stages of heavy haze weather from December 2016 to January 2017 in the Beijing area using the method developed by Ren et al.(2019)as the automatic identification of atmospheric spectral gaps and the reconstruction of atmospheric turbulence sequences.The results reveal that turbulence intermittency is the strongest in the cumulative stage(CS)of heavy haze weather,followed by in the transport stage(TS),and it is the weakest in the dissipation stage(DS).During the development and accumulation of haze pollution,buoyancy contributes negatively to turbulent kinetic energy(TKE),and horizontal wind speed is low.The classical turbulent motion is often affected by submesoscale motion.As a result,the calculation results of turbulence parameters are affected by submesoscale motion,which causes intensified turbulence intermittency.During the dissipation of pollution,the downward momentum transfer induced by low-level jets provides kinetic energy for turbulent motion in the near surface layer.The turbulent mixing effect is enhanced,and intermittency is weakened.Due to the intermittency of atmospheric turbulence,turbulence parameters calculated from the original fluctuation of meteorological elements may be overestimated.The overestimation of turbulence parameters in the CS is the strongest,followed by the TS,and the DS is the weakest.The overestimation of turbulent fluxes results in an overestimation of atmospheric dissipation capability that may cause an underestimation of pollutant concentrations in the numerical simulations of air quality. | Yan REN Hongsheng ZHANG Wei WEI Xuhui CAI Yu SONG Ling KANG | 2019 | Science China Earth Sciences2019，62，12： | 4 |
| 6 | Transparent perovskite glass-ceramics for visual optical thermometry显示文摘Optical thermometers have aroused considerable attention in recent years,and the increasing demand of sensitivity for practical application encourages the investigation on developing innovative non-contact optical thermo metric materials with higher sensitivity and accuracy.Perovskite quantum dots(QDs)with excellent temperature-dependence optical properties,provide a feasible approach to realizing the detection of temperature change,however,their poor high temperature thermal stability and the facile realization to obtain the production remain a daunting challenge.Herein,growing Tb^(3+)-doped CsPbl_(3) QDs in situ in borosilicate glass is proposed,which ensures the phase stability,and high-efficiency florescence output of the all-inorganic perovskite as a temperature sensor.A higher absolute and relative temperature sensitivity(0.0398 K^(-1) and 7.12%/K,respectively),along with the visible color change from orange-red to yellow-green with the increase of temperature is accomplished.Notably,the repeatable florescence intensity of Tb^(3+)-doped CsPbl_(3) QDs under high temperature enables their temperature sensing application. | Qihua Yang Lei Zhao Zhaohui Fang Ze Yang Jiangyan Cao Yiyu Cai Dacheng Zhou Xue Yu Jianbei Qiu Xuhui Xu | 2021 | Journal of Rare Earths2021，39，6： | 3 |
| 7 | Research Progress on Estimation of the Atmospheric Boundary Layer Height显示文摘Atmospheric boundary layer height(ABLH)is an important parameter used to depict characteristics of the planetary boundary layer(PBL)in the lower troposphere.The ABLH is strongly associated with the vertical distributions of heat,mass,and energy in the PBL,and it is a key quantity in numerical simulation of the PBL and plays an essential role in atmospheric environmental assessment.In this paper,various definitions and methods for deriving and estimating the ABLH are summarized,from the perspectives of turbulent motion,PBL dynamics and thermodynamics,and distributions of various substances in the PBL.Different methods for determining the ABLH by means of direct observation and remote sensing retrieval are reviewed,and comparisons of the advantages and disadvantages of these methods are presented.The paper also summarizes the ABLH parameterization schemes,discusses current problems in the estimation of ABLH,and finally points out the directions for possible future breakthroughs in the ABLHrelated research and application. | Hongsheng ZHANG Xiaoye ZHANG Qianhui LI Xuhui CAI Shaojia FAN Yu SONG Fei HU Huizheng CHE Jiannong QUAN Ling KANG Tong ZHU | 2020 | Journal of Meteorological Research2020，34，3： | 3 |
| 8 | Forward-in-time and backward-in-time dispersion in the convective boundary layer: the concentration footprint 显示文摘 | CAI Xuhui LECLERC M Y | 2007 | Bound-Lay Meteorol2007，123，2： | 1 |
| 9 | Estimation for ammonia emissions at county level in China from 2013 to 2018显示文摘Ammonia (NH_(3)) can interact with other trace chemicals in the atmosphere,significantly impacting atmospheric chemistry and global climate change.China is a largely agricultural country with high consumption of nitrogen fertilizer and large livestock herds,resulting in high NH_(3) emissions.In this study,a comprehensive county-level inventory of Chinese NH_(3) emissions from 2013 to 2018 was compiled.Based on previous research,an estimate of NH_(3) emissions from household coal combustion was added to the inventory.The estimation of emissions from open biomass burning was improved by using a method based on fire radiative energy (FRE).The total NH_(3) emissions in China increased from 2013 (9.64 Tg) to 2015 (9.75 Tg),and then decreased to 9.12 Tg in 2018.Emissions from fossil fuels reached a peak value in 2018,accounting for 8.4%of total emissions,while fertilizer application and livestock waste were responsible for fewer emissions than in previous years,accounting for 27.7%and 49.9%of the total from non-fossil fuel sources,respectively.The highest emission rates were in central and southwestern China.Seasonally,NH_(3) emissions peaked in spring and summer.The inventory had a 1-km spatial resolution and a monthly temporal resolution,which confirmed its suitability for global and regional air quality simulations. | Wenling LIAO Mingxu LIU Xin HUANG Tiantian WANG Zhenying XU Fang SHANG Yu SONG Xuhui CAI Hongsheng ZHANG Ling KANG Tong ZHU | 2022 | Science China Earth Sciences2022，65，6： | 1 |
| 10 | A health-based assessment of particulate air pollution in urban areas of Beijing in 2000-2004显示文摘 | Zhang Minsi Song Yu Cai Xuhui | 2007 | Science of the Total Environment2007，，376： | 1 |
| 11 | Economic assessment of the health effects related to particulate matter pollution in IllChinese cities by using economic burden of disease analysis显示文摘 | Zhang Misi Song Yu Cai Xuhui Zhou Jun | 2008 | Journal of Environmental Management2008，，88： | 1 |
| 12 | PM10 modeling of Beijing in the winter显示文摘 | Song Yu Zhang Minsi Cai Xuhui | 2006 | Atmospheric Environment2006，40，22： | 1 |
| 13 | A health-based assessment of particulate air pollution in urban areas of Beijing in 2000-2004显示文摘 | ZHANG Minsi SONG Yu CAI Xuhui | 2007 | Science of the Total Environment2007，376，1： | 1 |
| 14 | Engineered extracellular vesicles for delivery of siRNA promoting targeted repair of traumatic spinal cord injury显示文摘Spinal cord injury(SCI)is a severe disease of the nervous system that causes irreparable damage and loss of function,for which no effective treatments are available to date.Engineered extracellular vesicles(EVs)carrying therapeutic molecules hold promise as an alternative SCI therapy depending on the specific functionalized EVs and the appropriate engineering strategy.In this study,we demonstrated the design of a drug delivery system of peptide CAQK-modified,siRNA-loaded EVs(C-EVs-siRNA)for SCI-targeted therapy.The peptide CAQK was anchored through a chemical modification to the membranes of EVs isolated from induced neural stem cells(iNSCs).CCL2-siRNA was then loaded into the EVs through electroporation.The modified EVs still maintained the basic properties of EVs and showed favorable targeting and therapeutic effects in vitro and in vivo.C-EVs-siRNA specifically delivered siRNA to the SCI region and was taken up by target cells.C-EVs-siRNA used the inherent anti-inflammatory and neuroreparative functions of iNSCs-derived EVs in synergy with the loaded siRNA,thus enhancing the therapeutic effect against SCI.The combination of targeted modified EVs and siRNA effectively regulated the microenvironmental disturbance after SCI,promoted the transformation of microglia/macrophages from M1 to M2 and limited the negative effects of the inflammatory response and neuronal injury on functional recovery in mice after SCI.Thus,engineered EVs are a potentially feasible and efficacious treatment for SCI,and may also be used to develop targeted treatments for other diseases. | Yuluo Rong Zhuanghui Wang Pengyu Tang Jiaxing Wang Chengyue Ji Jie Chang Yufeng Zhu Wu Ye Jianling Bai Wei Liu Guoyong Yin Lipeng Yu Xuhui Zhou Weihua Cai | 2023 | Bioactive Materials2023，，5： | 1 |
| 15 | A high-resolution ammonia emission inventory in China显示文摘 | Huang Xin Song Yu Li Mengmeng Li Jianfeng Huo Qing Cai Xuhui Zhu Tong Hu Min Zhang Hongsheng | 2012 | EN2012，，1： | 1 |
| 16 | A health-based assessment of particulate air pollution in urban areas of Beijing in 2000–2004显示文摘 | Minsi Zhang Yu Song Xuhui Cai | 2007 | Science of the Total Environment2007，，1： | 1 |
| 17 | PM10 modeling of Beijing in the winter 显示文摘 | Song Yu Zhang Minsi Cai Xuhui | 2006 | Atmospheric Environment2006，40，： | 1 |
| 18 | Analysis of the transport pathways and potential sources of PM 10 in Shanghai based on three methods显示文摘 | Mengmeng Li Xin Huang Lei Zhu Jianfeng Li Yu Song Xuhui Cai Shaodong Xie | 2011 | Science of the Total Environment2011，，： | 1 |
| 19 | Delayed stress memory by CaAl_(2)O_(4):Eu^(2+) mechanoluminescent phosphor with defect engineering regulation显示文摘Real-time stress sensing based on mechanoluminescence materials has been widely studied for structural health monitoring of bridges,buildings,high-pressure vessels,and other infrastructure surfaces.However,this approach is difficult to detect the stress information of closed mechanical structures.Here,we propose a delayed stress memory strategy to record the stress information of closed mechanical structure by the flexible film composed with CaAl_(2)O_(4):Eu^(2+),Sm^(3+)phosphor.After the force is applied,the optical information on the film can be read out by the near-infrared laser after a period of time without real-time monitoring,and the stress distribution information of bearings and gears in the engine can be obtained.Furthermore,the regulation of trap depth from 0.662 to 1.042 eV allows the captured carriers to remain in the traps for a long time without being released as long persistent luminescence,which is beneficial to the delayed stress memory.Therefore,this work promotes the application prospect of mechanoluminescence materials in stress sensing,and provides a new idea to record the stress information of closed mechanical structures. | Yiyu CAI Sibo LIU Lei ZHAO Chao WANG Hongyu LV Bitao LIU Jianbei QIU Xuhui XU Xue YU | 2022 | Journal of Advanced Ceramics2022，11，8： | 1 |
| 20 | PM10 modeling of Beijing in the winter显示文摘 | Song Yu Zhang Minsi Cai Xuhui | | 0，，22： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员