维普中文期刊产品整合服务
23篇 您的检索式:作者名="Feng Xingang"
    题名 作者 年代 出处 被引量
1Characteristics of one-year observation of VOCs,NOx, and O_3 at an urban site in Wuhan, China显示文摘A continuous online observation of ozone and its precursors(NOx, VOCs) was carried out in central urban Wuhan from September 2016 to August 2017. The concentration levels of ozone,NOx, VOCs and their variations in urban Wuhan were analyzed, as well as effects of VOCs on ozone photochemical generation and the main controlling factors for ozone production. During the observation period, the average concentrations of ozone and NOx in Wuhan was 22.63 and30.14 ppbv, respectively, and the average concentration of VOCs was 32.61 ppbv(42.3% alkanes,13.0% alkenes, 10.0% aromatics, 7.3% acetylene, 9.9% OVOCs, and 10.5% halohydrocarbons).Ozone concentration was higher in spring and summer as compared with autumn and winter,wheras VOCs and NOx concentratios were lower in spring and summer but higher in autumn and winter. Aromatics and alkenes, two of VOCs species, showed the highest contributions to ozone formation potential in Wuhan(35.7% alkenes, 35.4 aromatics, 17.5% alkanes, 8.6% OVOCs,1.6% halogenated hydrocarbons, and 1.4% acetylene). Among all VOCs species, those with the highest contribution were ethylene, m-xylene, toluene, propylene and o-xylene. The contribution of these five compounds to the total ozone formation potential concentration was 43.90%.Ozone-controlling factors in Wuhan changed within one day; during the early morning hours(6:00–9:00), VOCs/NOx was low, and ozone generation followed a VOCs-limited regime.However, during the peak time of ozone concentration(12:00–16:00), the ratio of VOCs/NOx was relatively high, suggesting that ozone generation followed a NOx-limited regime.Yichang Yang Xingang Liu Jun Zheng Qinwen Tan Miao Feng Yu Qu Junling An Nianliang Cheng 2019Journal of Environmental Sciences2019,31,5:26
2COVID-19 Super Spreading Event Amongst Elderly Individuals—Jilin Province,China,January 2021显示文摘Summary What is already known on this topic?Clusters of COVID-19 cases often happened in small settings(e.g.,families,offices,school,or workplaces)that facilitate person-to-person virus transmission,especially from a common exposure.What is added by this report?On January 10 and 11,2021,an individual gave three product promotional lectures in Tonghua City.Laishun Yao Mingyu Luo Tiewu Jia Xingang Zhang Zhulin Hou Feng Gao Xin Wang Xiaogang Wu Weihua Cheng Guoqian Li Jing Lu Bing Zhao Tao Li Enfu Chen Dapeng Yin Biao Huang 2021China CDC weekly2021,3,10:13
3Molecular dynamics study on thermal conductivity of nano-scale thin films显示文摘A simple and effective model of heat conduction across thin films is set up and molecular dynamics simulations are implemented to explore the thermal conductivity of nanoscale thin dielectric films in the direction perpendicular to the film plane. Solid argon is selected as the model system due to its reliable experimental data and potential function. Size effects of the thermal conductivity across thin films are found by computer simulations: in a film thickness range of 2-10 nm, the conductivity values are remarkably lower than the corresponding bulk experimental data and increase as the thickness increases. The consistency between the approximate solution of the phonon Boltzmann transport equation and the simulation results ascribes the thermal conductivity size effect to the phonon scattering at film boundaries.Xiaoli Feng Zhixin Li Xingang Liang Zengyuan Guo 2001Chinese Science Bulletin2001,46,7:7
4Analysis of electrical performances of planar active phased array antennas with distorted array plane显示文摘The influence of the distorted plane of the active phased array antenna on the electromagnetic performance is of great significance to the research on and development of the high-performance antennas.On the bent and bowl-shape distortion,the model is established of the relationship between the electromagnetic performance and the position error of the radiated elements.The method is presented of analyzing the far-field pattern of the distorted rectangular active phased array antenna.The analysis results of a planar phased array antenna with different distortions grades prove the validity of the model.Therefore,by the method,the antenna designers may set the reasonable requirement on the structural tolerance in manufacturing antenna.Wang Congsi Bao Hong Zhang Fushun Feng Xingang 2009Journal of Systems Engineering and Electronics2009,20,4:7
5A numerical study of the wintertime double-warm-tongue structure in the Huanghai(Yellow) Sea显示文摘Satellite remote sensing observations show that during winter, sea surface temperature (SST) presents the structure of double warm tongues in the Huanghai Sea trough: the western and the eastern warm tongues. Numerical experiments based on POM are carried out to study the forming mechanism of this thermal structure and its relation to the Huanghai Sea Warm Current (HSWC). The control experiment reproduces this phenomenon quite well, and comparing experiments inves-tigate the effect of wind and tide. It is found that the western warm tongue is mainly caused by the HSWC, which can be strengthened by wintertime southward wind. The eastern warm tongue develops under the influence of an anti-clockwise circulation which is induced by the temperature front of the Huanghai Sea Cold Water Mass (HSCWM) in summer and autumn. In the eastern portion of this circulation, the northward current carries warm water to the north, forming the eastern warm tongue, which remains till winter.SHAN Feng QIAO Fangli LU Xingang XIA Changshui 2009Acta Oceanologica Sinica2009,28,4:3
6Aerosol optical properties under different pollution levels in the Pearl River Delta(PRD) region of China显示文摘To clarify the aerosol hygroscopic growth and optical properties of the Pearl River Delta(PRD)region,integrated observations were conducted in Heshan City of Guangdong Province from October 19 to November 17,2014.The concentrations and chemical compositions of PM2.5,aerosol optical properties and meteorological parameters were measured.The mean value of PM2.5 increased from less than 35(excellent)to 35-75μg/m^3(good)and then to greater than 75μg/m^3(pollution),corresponding to mean PM2.5 values of 24.9,51.2,and 93.3μg/m^3,respectively.The aerosol scattering hygroscopic growth factor(f(RH=80%))values were 2.0,2.12,and 2.18 for the excellent,good,and pollution levels,respectively.The atmospheric extinction coefficient(σext)and the absorption coefficient of aerosols(σap)increased,and the single scattering albedo(SSA)decreased from the excellent to the pollution levels.For different air mass sources,under excellent and good levels,the land air mass from northern Heshan had lower f(RH)andσsp values.In addition,the mixed aerosol from the sea and coastal cities had lower f(RH)and showed that the local sources of coastal cities have higher scattering characteristics in pollution periods.Liuwei Kong Min Hu Qinwen Tan Miao Feng Yu Qu Junling An Yuanhang Zhang Xingang Liu Nianliang Cheng 2020Journal of Environmental Sciences2020,32,1:3
7Diagnostic Value of Dynamics Serum sCD163, sTREM-1, PCT, and CRP in Differentiating Sepsis, Severity Assessment, and Prognostic Prediction显示文摘Longxiang Su Lin Feng Qing Song Hongjun Kang Xingang Zhang Zhixin Liang Yanhong Jia Dan Feng Changting Liu Lixin Xie Celeste C. Finnerty 2013Mediators of Inflammation2013,,:2
8Insights into the phenomenon of an explosive growth and sharp decline in haze:A case study in Beijing显示文摘A severe haze episode occurred in winter in the North China Plain(NCP),and the phenomenon of an explosive growth and sharp decline in PM2.5(particulate matter with an aerodynamic diameter equal to or less than 2.5μm)concentration was observed.To study the systematic causes for this phenomenon,comprehensive observations were conducted in Beijing from November 26 to December 2,2015;during this period,meteorological parameters,LIDAR data,and the chemical compositions of aerosols were determined.The haze episode was characterized by rapidly varying PM2.5 concentration,and the highest PM2.5 concentration reached 667μg/m3.During the haze episode,the NCP was dominated by a weak high-pressure system and continuously low PBL(planetary boundary layer)heights,which are unfavorable conditions for the diffusion of pollutants.The large increases in the concentrations of SNA(SO42-,NO3-and NH4+)during the haze implied that the formation of SNA was the largest contribution.Water vapor also played a vital role in the formation of haze by promoting the chemical transformation of secondary pollutants,which led to higher PM2.5 concentrations.The spatial distributions of PM2.5 in Beijing at different times and the backward trajectories of the air masses also indicated that pollutants from surrounding provinces in particular,contributed to the higher PM2.5concentration.Wenguang Li Xingang Liu Yuanhang Zhang Qinwen Tan Miao Feng Mengdi Song Lirong Hui Yu Qu Junling An Haokai Gao 2019Journal of Environmental Sciences2019,31,10:1
9Mierosurgical and tractographic anatomical study of insular and trans-sylvian transinsular approach显示文摘Feng Wang Tao Sun XinGang Li 2011Neurological Science2011,32,:1
10Modified series model for cross-plane thermal conductivity of short-period Si/Ge superlattices显示文摘Superlattices have great application potentials in thermo-electric materials and solid laser techniques.Their complicated heat transport mechanisms due to size effects,multi-interfaces and mini-band are very important issues for the prediction of thermal conductivity.In this paper,the short-period Si/Ge superlattices are investigated by a modified series model based on the Debye-Callaway description.The Lambert Law is used to describe the phonon emission within hemisphere space.In addition,the phonon interface transmission coefficients obtained from the phonon wave packet simulation are incorporated into boundary condition of the model,which removes the fitting parameters in the model.Better agreement with experiment is obtained.The effects of temperature,wavelength-dependent phonon transmission,superlattice periods,as well as the thickness of Ge layer are considered in this paper.FENG Yuan LIANG XinGang 2015Science China(Physics,Mechanics & Astronomy)2015,58,6:1
11International coop-eration mechanism on renewable energy devel-opment in China e A critical analysis显示文摘Zhao Xingang Feng Tiantian 0,,36:1
12Treatment of organic wastewater containing Cr^3+ by a novel complex process of electrodeposifion and biofilm 显示文摘Li Tiancheng Li 'Xingang Feng Xia Jiang Bin Wand Dawei Yuan Shaojun Transactions of Tianjin University0,,:1
13Microsurgical and tractographic anatomical study of insular and trans- sylvian transinsular approach显示文摘Feng Wang Tao Sun XinGang Li 2011Neurological Science2011,,:1
14Swainsonine promotes apoptosis in human oesophageal squamous cell carcinoma cells in vitro and in vivo through activation of mitochondrial pathway显示文摘Zhaocai Li Yong Huang Feng Dong Wei Li Li Ding Gaoshui Yu Dan Xu Yuanyuan Yang Xingang Xu Dewen Tong 2012Journal of Biosciences2012,,1:1
15显示文摘 Li Xingang Feng Xia Jiang Bin Wand Dawei Yuan Shaojun Transactions of Tianjin University0,,:1
16International cooperation mechanism on renewable energy devel- opment in China --A critical analysis 显示文摘Zhao Xingang Feng Tiantian Liu Lu Liu Pingkuo Yang Yisheng 2011Renewable Energy2011,,36:1
17Microwave assisted hydrothermal synthesis of tin niobates nanosheets with high cycle stability as lithium-ion battery anodes显示文摘In this study, SnNb_2O_6 and Sn_2Nb_2O_7 nanosheets are synthetized via microwave assisted hydrothermal method, and innovatively employed as anode materials for lithium-ion battery. The SnNb_2O_6 electrode exhibits high reversible capacity and excellent cycling stability(498 mAh/g at 0.1 A/g after 100 cycles),which is superior to that of Sn_2Nb_2O_7 electrode(173 mAh/g at 0.1 A/g after 100 cycles). Even increasing the current density to 2.0 A/g, the SnNb_2O_6 electrode still delivers a reversible capacity up to 306 mAh/g.The rate performance of the SnNb_2O_6 electrode is also better than that of Sn_2 Nb_2O_7 electrode at different current densities from 0.1 A/g to 2.0 A/g. The enhanced electrochemical performance of SnNb_2O_6 nanosheets can be attributed to the unique layered structure, which is conducive to the diffusion of the lithium ions and the migration of electrons during discharge/charge.Xingang Kong Jiarui Zhang Jianfeng Huang Jiayin Li Yi Qin Ting Zhao Qi Feng 2019Chinese Chemical Letters2019,30,3:1
18Decentralized Secure Interoperation Multi-Domain Environments显示文摘FENG Dengguo WANG Xingang XU Zhen 2009Chinese Journal of Electronics2009,18,1:0
19On Policy Evolution in Centralized Secure Interoperation of Multiple Domains显示文摘FENG Dengguo WANG Xingang XU Zhen 2008Chinese Journal of Electronics2008,17,3:0
20Residue and Safety Use of Emamectin Benzoate in Ginger显示文摘[Objective]The paper was to guide scientific and rational use of emamectin benzoate in ginger.[Method]A field experiment was conducted to determine residue and degradation dynamics and final residue of emamectin benzoate in ginger.The residue of emamectin benzoate in ginger was determined by high performance liquid chromatography-mass spectrometry(HPLC-MS/MS).[Result]The half-life of emamectin benzoate in ginger was 2.2-3.4 d.As 5%emamectin benzoate WDG was sprayed on ginger at 7.5 and 11.25 g·a.i/hm^2 for consecutive 1-2 times,the residues of emamectin benzoate in ginger harvested at 7,14 and 21 d post spraying were lower than the quantitative limit of the method(0.01 mg/kg),and were lower than the stipulation in Japan as well(0.1 mg/kg).[Conclusion]It is safe to use emamectin benzoate in ginger with the harvest interval of 7 d according to the recommended dose.Feng Yizhi Zhang Aijuan Liang Lin Lin Dongsen Ren Yupeng Ma Xingang Li Wenping Zuo Bojun 2019Plant Diseases and Pests2019,10,4:0
返回顶部 每页显示:
共2页 首页 上一页 第1页 下一页 末页 /2 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费