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16篇 您的检索式:作者名="QI Hongjun"
    题名 作者 年代 出处 被引量
1Heterogeneous reaction of NO_2 on the surface of NaCl particles显示文摘The heterogeneous reaction of NO2 on NaCl particles has been investigated with the new sample preparation and the mode of gas-solid free diffusion. Diffuse Reflectance Infrared Fourier Transform Spectroscopy (DRIFTS) is used to characterize the adsorbed products in situ, combined with Ion Chromatographic (IC), X-ray Photoelectron Spectroscopy (XPS) and Scan Electron Micros- copy (SEM). Our results indicate that the reaction is not limited to the surface of the NaCl particles, but penetrated into the upper layers. Surface reactive sites determine the reaction. Kinetic measurements show that nitrate formation on sodium chloride is second order in NO2 concentration and reactive uptake coefficient is (1.54 ± 0.70) × 10?5.LI Hongjun ZHU Tong DING Jie CHEN Qi XU Bingye 2006Science China Chemistry2006,49,4:9
2Agricultural Risk Factors Influence Microbial Ecology in Honghu Lake显示文摘Agricultural activities, including stock-farming, planting industry, and fish aquaculture,can affect the physicochemical and biological characters of freshwater lakes. However, the effects of pollution producing by agricultural activities on microbial ecosystem of lakes remain unclear.Hence, in this work, we selected Honghu Lake as a typical lake that is influenced by agriculture activities. We collected water and sediment samples from 18 sites, which span a wide range of areas from impacted and less-impacted areas. We performed a geospatial analysis on the composition of microbial communities associated with physicochemical properties and antibiotic pollution of samples. The co-occurrence networks of water and sediment were also built and analyzed. Our results showed that the microbial communities of impacted and less-impacted samples of water were largely driven by the concentrations of TN, TP, NO_3^--N, and NO_2^--N, while those of sediment were affected by the concentrations of Sed-OM and Sed-TN. Antibiotics have also played important roles in shaping these microbial communities: the concentrations of oxytetracycline and tetracycline clearly reflected the variance in taxonomic diversity and predicted functional diversity between impacted and less-impacted sites in water and sediment samples, respectively. Furthermore, for samples from both water and sediment, large differences of network topology structures between impacted and less-impacted were also observed. Our results provide compelling evidence that the microbial community can be used as a sentinel of eutrophication and antibiotics pollution risk associated with agricultural activity; and that proper monitoring of this environment is vital to maintain a sustainable environment in Honghu Lake.Maozhen Han Melissa Dsouza Chunyu Zhou Hongjun Li Junqian Zhang Chaoyun Chen Qi Yao Chaofang Zhong Hao Zhou Jack A Gilbert Zhi Wang Kang Ning 2019Genomics, Proteomics & Bioinformatics2019,17,1:3
3Few-mode fibre-optic microwave photonic links显示文摘The fibre-optic microwave photonic link has become one of the basic building blocks for microwave photonics.Increasing the optical power at the receiver is the best way to improve all link performance metrics including gain,noise figure and dynamic range.Even though lasers can produce and photodetectors can receive optical powers on the order of a Watt or more,the power-handling capability of optical fibres is orders-of-magnitude lower.In this paper,we propose and demonstrate the use of few-mode fibres to bridge this power-handling gap,exploiting their unique features of small acousto-optic effective area,large effective areas of optical modes,as well as orthogonality and walk-off among spatial modes.Using specially designed few-mode fibres,we demonstrate order-of-magnitude improvements in link performances for single-channel and multiplexed transmission.This work represents the first step in few-mode microwave photonics.The spatial degrees of freedom can also offer other functionalities such as large,tunable delays based on modal dispersion and wavelength-independent lossless signal combining,which are indispensable in microwave photonics.He Wen Hongjun Zheng Qi Mo Amado Manuel Velázquez-Benítez Cen Xia Bin Huang Huiyuan Liu Huang Yu Pierre Sillard Jose Enrique Antonio Lopez Rodrigo Amezcua Correa Guifang Li 2017Light(Science & Applications)2017,6,1:2
4An electro-hydraulic servo control system research for CFETR blanket RH 显示文摘Chen Changqi Tang Hongjun Qi Songsong 2014Fusion Engineering and Design2014,89,1:1
5Design of Remote Monitoring System for Aquaclture Cages Based on 3G Network and ARM-Android Embedded System显示文摘Yanle Wang Changsong Qi Hongjun Pan 2012Rrocedia Engineering2012,,29:1
6Tracing and localization system for pipeline robot 显示文摘Qi Haiming Zhang Xiaohua Chen Hongjun 2009Mechatronics2009,19,1:1
7Tracing and localization system for pipeline robot显示文摘QI Haiming ZHANG Xiaohua CHEN Hongjun 2009Mechatronics2009,1,:1
8A highly sensitive and robust UPLC - MS with electros- pray ionization method for quantitation of taxifolin in rat plasma 显示文摘Xiaodan Wang Hongjun Xia Feng Xing Guifeng Deng Qi Shen Su Zeng 2009Chromatography B2009,,:1
9Analysis on the relationship between winter precipitation and the annual variation of horse stomach fly community in arid desert steppe, Northwest China (2007–2019)显示文摘Gasterophilus spp.have been found to be widespread in reintroduced Przewalski’s horses in the Kalamaili Nature Reserve(Northwest China).However,data on the annual variation in Gasterophilus infections are lacking.To analyze the epidemiological features and determine the cause of the annual variation in Gasterophilus infections,we treated 110 Przewalski’s horses with ivermectin and collected Gasterophilus larvae from fecal samples each winter from 2007 to 2019.All 110 Przewalski’s horses studied were found to be infected by Gasterophilus spp.,and a total of 141379 larvae were collected.Six species of Gasterophilus were identified with the following prevalence:G.pecorum(100%),G.nasalis(96.36%),G.nigricornis(94.55%),G.haemorrhoidalis(56.36%),G.intestinalis(59.09%),and G.inermis(3.64%).The mean infection intensity of Gasterophilus spp.larvae in Przewalski’s horses was 1285±653.G.pecorum(92.96%±6.71%)was the most abundant species.The intensity of Gasterophilus spp.(r=–0.561,P<0.046)was significantly correlated with winter precipitation.Our findings confirmed that,in the Kalamaili Nature Reserve,gasterophilosis is a severe parasitic disease in Przewalski’s horses.Winter precipitation at the beginning of the year can indirectly affect the intensity and composition of Gasterophilus spp.in Przewalski’s horses at the end of the year.Therefore,the water-related ecological regulation should be carried out to help reduce the parasite infection of Przewalski’s horses.Heqing HUANG Ke ZHANG Boru ZHANG Shanhui LIU Hongjun CHU Yingjie QI Dong ZHANG Kai LI 2022Integrative Zoology2022,17,1:1
10Research and ap- plication of drilling technology of extended-reach horizontally- intersected well used to extract coalbed methane显示文摘SHI Zhijun ZHAO Yongzhe QI Hongjun 2011Procedia Earth and Planetary Science2011,,3:1
11Tracing and Localization System for Pipeline Robot 显示文摘QI Haiming ZHANG Xiaohua CHEN Hongjun 2009Mechatronics2009,19,1:1
12Theoretical and experimental analyses of casing collapsing strength under non-uniform loading显示文摘Lin Yuanhua Deng Kuanhai Zeng Dezhi Zhu Hongjun Zhu Da- jiang Qi Xing 2014Journal of Central South University of Technology2014,9,21:1
13Research and Application of Drilling Technology of Extended-reach Horizontally-intersected Well Used to Extract Coalbed Methane显示文摘Zhijun Shi Yongzhe Zhao Hongjun Qi Jianlin Liu Zhenyang Hu 2011Procedia Earth and Planetary Science2011,,:1
1411S蛋白酶体PSME3通过正反馈调节NF-κB信号通路调节机体抗菌反应与宿主防御显示文摘巨噬细胞在宿主防御以及机体内环境稳定的维持中发挥着至关重要的作用。当机体受到外来病原微生物入侵时,巨噬细胞能够通过分泌促炎因子和杀伤物质,杀死入侵的病原菌。然而,关于巨噬细胞在宿主防御过程中是如何被严格调控的,至今仍不是很清楚。Jinxia Sun Yi Luan Dong Xiang Xiao Tan Hui Chen Qi Deng Jiaojiao Zhang Minghui Chen Hongjun Huang Weichao Wang Tingting Niu Wenjie Li Hu Peng Shuangxi Li Lei Li Wenwen Tang 李晓涛 Dianqing Wu 王平 2017科学新闻2017,19,4:0
15Solid-phase molecular self-assembly facilitated supramolecular films with alternative hydrophobic/hydrophilic domains for skin moisture detection显示文摘Human skin moisture is closely related to health and personal care issues.Many creams were developed to claim capable of skin moisturizing.However,people can hardly check their skin moisture status and the moisturizing effect of various creams conveniently,since currently all the skin moisturizing detection rely on large equipment requiring power supply.Herein,we report a power-supply independent supramolecular film that is able to directly report the moisturizing status of the skin.With the strategy of solid-phase molecular self-assembly(SPMSA),the aqueous precipitates formed by commercially available polyelectrolyte and oppositely charged surfactant would transform into a supramolecular film under a mild mechanical pressure,where the hydrophobic surfactant domains bridged by polyelectrolyte merge into hydrophobic mesophases to reduce interfacial energy.The hydrophobic mesophase will greatly retard water diffusion inside the film,so that a humidity gradient is generated as the film is exposed to a humid environment.The film will bend upward automatically in touch with moisture skin,and the bending degree is proportional to the skin moisture status.Therefore,the film can be used as portable smart power-free skin moisture sensor.Jinwan Qi Tongyue Wu Wenkai Wang Hongjun Jin Shuitao Gao Shasha Jiang Jianbin Huang Yun Yan 2022Aggregate2022,3,2:0
16Quantitative research on higher order harmonics in metrology beamline显示文摘The synchrotron radiation spectra of the spherical grating monochromator(SGM)working in the soft X-ray and VUV region are often contaminated by significant amounts of higher order harmonics.They cannot be suppressed completely by suitable filters.Higher order contributions in the spectral radiation standard and metrology beamline were researched using transmission grating(made in-house)and IRD AXUV100G(USA)photodiode detector.The exit beam was dispersed with the transmission grating behind the exit slit of the monochromator,and the contributions of the different orders were analyzed.The higher order distributions were quantitatively determined for three gratings with line densities of 1800,600 and 200 l/mm.Experiment results show that in wavelengths between 5 nm and 15 nm the contributions of the higher orders to the detector signal are restricted to less than 7%even without the use of filters.In wavelength regions between 5 nm and 34 nm,the contributions of the higher orders to the detector signal are less than 14%with proper Al,Si_(3)N_(4) and Zr filters,and after being modified by quantum efficiency of the detector,the higher order contributions are restricted to less than 6.5%.The study also shows that higher orders are almost totally suppressed by MgF_(2) filter when the wavelength ranges between 115–140 nm.Hongjun ZHOU Jinjin ZHENG Tonglin HUO Guobin ZHANG Zeming QI Pengfei ZHONG 2008Frontiers of Electrical and Electronic Engineering in China2008,3,1:0
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