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| 1 | Adsorption and desorption of herbicide monosulfuron-ester in Chinese soils显示文摘Monosulfuron-ester is a new,low rate,sulfonylurea herbicide that is being promoted for annual broadleaf and gramineal weed control;however,there is a lack of published information on its behavior in soils.The adsorption and desorption of monosulfuronester by seven type soils were measured using a batch equilibrium technique.The results showed that the Freundlich equation fitted its adsorption and desorption well,and the Freundlich constant values (K f-ads ) ranged from 0.88 to 5.66.Adsorption isotherms were nonlinear with 1/n f-ads values < 1.Soil pH,organic matter (OM),and clay content were the main factors influencing its adsorption and desorption.Adsorption and desorption were negatively correlated with pH 4.0–8.0 while positively correlated with OM and clay content.The adsorption of monosulfuron-ester was mainly a physical process,because its free energy (?G) in seven soils was less than 40 kJ/mol.Monosulfuron-ester adsorption by three soils increased with increasing CaCl 2 concentration using CaCl 2 as a background electrolyte.Monosulfuron-ester desorption was hysteretic in all tested soils. | Chunxian Wu Suzhi Zhang Guo Nie Zhongming Zhang Jinjun Wang | 2011 | Journal of Environmental Sciences2011,23,9: | 8 |
| 2 | Highly efficient Cu/anatase TiO2 {001}-nanosheets catalysts for methanol synthesis from CO2显示文摘Anatase TiO_2 nanosheets(-ns-) with dominant exposed {001} facets were used as support to load copper,and the synthesized Cu/TiO_2-ns catalysts were evaluated for CO_2 hydrogenation to methanol. Under the reaction conditions, P = 3.0 MPa, T = 260 ℃, V(N_2):V(H_2):V(CO_2) = 8:69:23 and gas hourly space velocity(GHSV) = 3600 mL g^(-1)h^(-1), the methanol yield reached an appealing high value, 5.6%. Copper-loading amount, calcination temperature and reduction atmosphere have been investigated in this work, which significantly influence the particle sizes of copper and/or the defect concentration in TiO_2, then leading to different catalytic performance. Characterizations of XRD, EPR, CO_2-TPD and FTIR demonstrate that higher specific surface area of Cu is good for the hydrogenation of CO_2 and adequate amount of Ti^(3+) plays important roles in CO_2 activation. Both of them facilitate high turnover frequency(TOF) of methanol formation. | Yunfeng Bao Chunlei Huang Limin Chen Yu dong Zhang Long Liang Jinjun Wen Mingli Fu Junliang Wu Daiqi Ye | 2018 | Journal of Energy Chemistry2018,27,2: | 7 |
| 3 | Pointwise dimensions of general Moran measures with open set condition显示文摘Recently Lou and Wu obtained the formulas of pointwise dimensions of some Moran measures on Moran sets in Rd under the strong separation condition.In this paper,we prove that the result is still true under the open set condition.Due to the lack of the strong separation condition,our approach is essentially different from that used by Lou and Wu.We also obtain the formulas of the Hausdorff and packing dimensions of the Moran measures and discuss some interesting examples. | LI JinJun WU Min | 2011 | Science China Mathematics2011,54,4: | 7 |
| 4 | Effect of drag reducing riblet surface on coherent structure in turbulent boundary layer显示文摘The characteristics of turbulent boundary layer over streamwise aligned drag reducing riblet surface under zero-pressure gradient are investigated using particle image velocimetry. The formation and distribution of large-scale coherent structures and their effect on momentum partition are analyzed using two-point correlation and probability density function. Compared with smooth surface, the streamwise riblets reduce the friction velocity and Reynolds stress in the turbulent boundary layer, indicating the drag reduction effect. Strong correlation has been found between the occurrence of hairpin vortices and the momentum distribution. The number and streamwise length scale of hairpin vortices decrease over streamwise riblet surface. The correlation between number of uniform momentum zones and Reynolds number remains the same as smooth surface. | Guangyao CUI Chong PAN Di WU Qingqing YE Jinjun WANG | 2019 | Chinese Journal of Aeronautics2019,32,11: | 6 |
| 5 | Photooxidation of arsenic(Ⅲ) to arsenic(Ⅴ) on the surface of kaolinite clay显示文摘As one of the most toxic heavy metals, the oxidation of inorganic arsenic has drawn great attention among environmental scientists. However, little has been reported on the solar photochemical behavior of arsenic species on top-soil. In the present work, the influencing factors(p H, relative humidity(RH), humic acid(HA), trisodium citrate, and additional iron ions) and the contributions of reactive oxygen species(ROS, mainly HOUand HO2U/O2U-) to photooxidation of As(Ⅲ) to As(Ⅴ) on kaolinite surfaces under UV irradiation(λ = 365 nm)were investigated. Results showed that lower p H facilitated photooxidation, and the photooxidation efficiency increased with the increase of RH and trisodium citrate.Promotion or inhibition of As(Ⅲ) photooxidation by HA was observed at low or high dosages, respectively. Additional iron ions greatly promoted the photooxidation, but excessive amounts of Fe2+competed with As(Ⅲ) for oxidation by ROS. Experiments on scavengers indicated that the HOUradical was the predominant oxidant in this system.Experiments on actual soil surfaces proved the occurrence of As(Ⅲ) photooxidation in real topsoil. This work demonstrates that the photooxidation process of As(Ⅲ) on the soil surface should be taken into account when studying the fate of arsenic in natural soil newly polluted with acidic wastewater containing As(Ⅲ). | Wei Ding Yajie Wang Yingtan Yu Xiangzhi Zhang Jinjun Li Feng Wu | 2015 | Journal of Environmental Sciences2015,27,10: | 4 |
| 6 | Multiple transformation pathways of p-arsanilic acid to inorganic arsenic species in water during UV disinfection显示文摘p-Arsanilic acid(p-ASA) is widely used in China as livestock and poultry feed additive for promoting animal growth.The use of organoarsenics poses a potential threat to the environment because it is mostly excreted by animals in its original form and can be transformed by UV–Vis light excitation.This work examined the initial rate and efficiency of p-ASA phototransformation under UV-C disinfection lamp.Several factors influencing p-ASA phototransformation,namely,p H,initial concentration,temperature,as well as the presence of Na Cl,NH4+,and humic acid,were investigated.Quenching experiments and LC–MS were performed to investigate the mechanism of p-ASA phototransformation.Results show that p-ASA was decomposed to inorganic arsenic(including As(Ⅲ) and As(V))and aromatic products by UV-C light through direct photolysis and indirect oxidation.The oxidation efficency of p-ASA by direct photosis was about 32%,and those by HOU and1O2 were 19% and 49%,respectively.Cleavage of the arsenic–benzene bond through direct photolysis,HOU oxidation or1O2 oxidation results in simultaneous formation of inorganic As(Ⅲ),As(IV),and As(V).Inorganic As(Ⅲ) is oxidized to As(IV) and then to As(V) by1O2 or HOU.As(IV) can undergo dismutation or simply react with oxygen to produce As(V) as well.Reactions of the organic moieties of p-ASA produce aniline,aminophenol and azobenzene derivatives as main products.The photoconvertible property of p-ASA implies that UV disinfection of wastewaters from poultry and swine farms containing p-ASA poses a potential threat to the ecosystem,especially agricultural environments. | Suqi Li Jing Xu Wei Chen Yingtan Yu Zizheng Liu Jinjun Li Feng Wu | 2016 | Journal of Environmental Sciences2016,28,9: | 4 |
| 7 | Effects of surface shapes on properties of turbulent/non-turbulent interface in turbulent boundary layers显示文摘The effects of directional riblets surfaces on the turbulent/non-turbulent(T/NT) interface in turbulent boundary layers are experimentally investigated using two-dimensional time-resolved particle image velocimetry(PIV). The velocity field of streamwise-wall-normal plane for the smooth surface, converging and diverging riblets surfaces are measured. The interface is detected using the criterion of local kinetic energy. The statistical properties of interface height and conditional averaged velocity for different surfaces are analyzed. It is shown that, the converging and diverging riblets surfaces have little effect on the fractal dimension of the T/NT interface, but they cause the intermittency profile deviate from error function and the probability distribution of interface height deviate from Gaussian function. To be specific, the distribution of interface height for the converging riblets surface shows a positive skewness while it shows a negative skewness for the diverging riblets surface.Moreover, the conditional averaged streamwise velocity and spanwise vorticity across the interface are analyzed, and it is found that their self-similarities are preserved for different surfaces when normalized with respective friction velocity. The correlation analysis reveals that near-wall streamwise velocity fluctuation and interface height show a negative correlation. | WU Di WANG JinJun CUI GuangYao PAN Chong | 2020 | Science China(Technological Sciences)2020,63,2: | 4 |
| 8 | Novel C-17 spirost protostane-type triterpenoids from Alisma plantago-aquatica with antiinflammatory activity in Caco-2 cells显示文摘Twenty-one protostane-type triterpenoids with diverse structures, including nine new compounds(1 e9), were isolated from the of Alisma plantago-aquatica Linn. Structurally, alisolides A-F(1 e6), composed of an oxole group coupled to a five-membered ring, represent unusual C-17 spirost protostane-type triterpenoids. Alisolide H(8) is a novel triterpenoid with an unreported endoperoxide bridge. Alisolide I(9) represents the first example of 23,24-acetal triterpenoid. Their structures were elucidated based on spectroscopic analysis, wherein the absolute configurations of 4-6, 8 were further confirmed by the Mo2(OAc)4-induced ECD method. Furthermore, all isolates were evaluated for their inhibitory effects on LPS-induced NO production in Caco-2 cells, and all the compounds showed remarkable inhibitory activities, with IC50 values in the range of 0.76 e38.20 mmol/L. | Qinghao Jin Jianqing Zhang Jinjun Hou Min Lei Chen Liu Xia Wang Yong Huang Shuai Yao Bang Yeon Hwang Wanying Wu Dean Guo | 2019 | Acta Pharmaceutica Sinica B2019,9,4: | 3 |
| 9 | Induced electric fields and plasmonic interactions between a metallic nanotube and a thin metallic film显示文摘We have numerically simulated the induced electric fields and the plasmonic interactions of a metallic nanotube near a thin metallic film. Our study shows that the energies and intensities of the plasmon resonances depend strongly on the aspect ratio (the ratio of the inner to outer radius) of the nanotube as well as the separation between the center of the nanotube and the upper surface of the metallic film and the thickness of the film. The enhancement of the induced electric field of this system reaches as high as 10 4 orders of magnitude and its field distribution is characterized by waveguide-mode resonance. The report proposes that these phenomena can be applied to designing surface enhanced spectroscopies such as surface enhanced Raman spectroscopy for efficient chemical and biological sensing. | LI HongJian 1,2 , FU ShaoLi 1 , XIE SuXia 1,2 , XU HaiQing 1 , ZHOU Xin 1,2 & WU JinJun 1 1 College of Physics Science and Technology, Central South University, Changsha 410083, China 2 College of Materials Science and Engineering, Central South University, Changsha 410083, China | 2010 | Science China(Physics,Mechanics & Astronomy)2010,53,1: | 3 |
| 10 | Mesoporous iron oxide-silica supported gold catalysts for low-temperature CO oxidation显示文摘Mesoporous iron oxide-silica composite with a high silica content was synthesized by hydrothermal method,and another composite material with a high iron content was obtained by etching part of silica in alkaline solution.Gold catalysts were loaded onto both composites by a deposition-precipitation method,and used for CO oxidation.The samples were characterized by BrumauerEmmet-Teller(BET),X-ray diffraction(XRD),X-ray photoelectron spectra(XPS),transmission electron microscope(TEM)and scanning electron microscope(SEM)techniques.Both composites had high specific surface areas and were amorphous.The Au nanoparticles dispersed on the surface of the composites existed in metallic state.Composite with high silica content was not suitable for Au loading,and its supported gold catalyst showed poor performance in catalytic reaction.In contrast,composite with high iron content allowed efficient Au loading,and CO could be oxidized completely at low temperature on its supported gold catalyst.The effects of deposition-precipitation pH values on Au loading and activity of the catalyst were investigated,and the results indicated that Au loading was the highest and the catalyst was the most active for CO oxidation when the synthesis pH was adjusted to 8. | Weidong Zhang Xiaofei Lu Weili Zhou Feng Wu Jinjun Li | 2014 | Chinese Science Bulletin2014,59,31: | 3 |
| 11 | Effects of the local environment on plasmonic coupling of metallic nanotube arrays显示文摘We have theoretically investigated the effect of the dielectric core and the dielectric embedding medium separately on the transmission spectra and plasmonic properties of coupled metallic nanotube arrays.It is found that the plasmonic properties of the nanotube arrays are strongly influenced by the presence of the dielectric which induces additional screening charges.We show that instead of one single photonic bandgap for the hollow nanotube arrays placed in air,an additional photonic bandgap arises from the presence of dielectric media in the transmission spectra.Based on the localized nature of the electric field distributions,we also clearly show the presence of the local plasmonic resonant modes that originate from multipolar plasmon polaritons in the cross section of these nanotube arrays,and that a large amount of opposing surface charges are built up in the gap between adjacent nanotubes. | LI HongJian FU ShaoLi XIE SuXia XU HaiQing ZHOU Xin WU JinJun | 2011 | Science China(Physics,Mechanics & Astronomy)2011,54,1: | 2 |
| 12 | Identification and characterization of a novel peptide ligand of Tie2 for targeting gene therapy显示文摘有免疫球蛋白和表皮的生长因素相同 domain-2 (Tie2 ) 的酷氨酸 kinase 在稳固的肿瘤为基因治疗被看作了一个合理目标。以便为指向的基因治疗识别 Tie2 的新奇的肽 ligand,我们屏蔽了一个噬菌体显示肽图书馆并且识别了候选人肽 ligand NSLSNASEFRAPY (指明的 GA5 ) 。有约束力的试金和 Scatchard 分析表明 GA5 能明确地与 2.1 的一个分离常数绑在 Tie2 ?鷐 吗?? | Xianghua Wu Zonghai Li Ming Yao Huamao Wang Sumin Qu Xianlian Chen Jinjun Li Ye Sun Yuhong Xu Jianren Gu | 2008 | Acta Biochimica et Biophysica Sinica2008,40,3: | 2 |
| 13 | STRATEGY FOR DIESEL ROTARY ENGINE WITH COMMON RAIL INJECTION SYSTEM显示文摘直接注射低压缩率柴油机旋转引擎被设计并且学习了发现电子控制高压力的适当应用普通栏杆注射系统。当前的开发集中于应用燃料注射和点火策略,特别有关注射者,点火来源,和燃烧室的燃烧配置。原型引擎,与 Bosch 普通栏杆系统和高效装备了联合起来的电子控制(ECU ) ,相应地被设计。研究证明一个普通栏杆注射系统的集成并且主要并且飞行员决斗注射者配置,帮助了发光塞子点火设备和灵活 ECU,代表一条有希望的途径改进低压缩率柴油机的潜力旋转引擎。当前,引擎能在 6kr 中心点 min~ 跑(-1) 稳定地并且力量是大约 68 kW/(4 kr 中心点 min^(-1)) 。 | WU Jinjun HAI Jingtao SHI Jianzhong LI Xuesong YANG Qing WANG Shangyong | 2006 | Chinese Journal of Mechanical Engineering2006,19,3: | 2 |
| 14 | Highly stableβ‑ketoenamine‑based covalent organic frameworks(COFs):synthesis and optoelectrical applications显示文摘Covalent organic frameworks(COFs)are one class of porous materials with permanent porosity and regular channels,and have a covalent bond structure.Due to their interesting characteristics,COFs have exhibited diverse potential applications in many felds.However,some applications require the frameworks to possess high structural stability,excellent crystallinity,and suitable pore size.COFs based onβ-ketoenamine and imines are prepared through the irreversible enol-to-keto tautomerization.These materials have high crystallinity and exhibit high stability in boiling water,with strong resistance to acids and bases,resulting in various possible applications.In this review,we frst summarize the preparation methods for COFs based onβ-ketoenamine,in the form of powders,flms and foams.Then,the efects of diferent synthetic methods on the crystallinity and pore structure of COFs based onβ-ketoenamine are analyzed and compared.The relationship between structures and diferent applications including fuorescence sensors,energy storage,photocatalysis,electrocatalysis,batteries and proton conduction are carefully summarized.Finally,the potential applications,large-scale industrial preparation and challenges in the future are presented. | Yaqin Li Maosong Liu Jinjun Wu Junbo Li Xianglin Yu Qichun Zhang | 2022 | Frontiers of Optoelectronics2022,15,3: | 2 |
| 15 | DNA Self‐Assembly of Targeted Near‐Infrared‐Responsive Gold Nanoparticles for Cancer Thermo‐Chemotherapy显示文摘 | Zeyu Xiao Changwei Ji Jinjun Shi Eric M. Pridgen Jillian Frieder Jun Wu Omid C. Farokhzad | 2012 | Angew Chem Int Ed2012,,47: | 1 |
| 16 | Experimental investigations on the application of lift enhancement devices to forward-swept aircraft model 显示文摘 | Zhang Wang Wang Jinjun Wu Zhe | 2006 | Aeronautical Journal2006,110,1108: | 1 |
| 17 | Investigation of Asphalt Mixture Containing Demolition Waste Obtained from Earthquake - Damaged Buildings 显示文摘 | Jiqing Zhu Shaopeng Wu Jinjun Zhong | 2012 | Construction and Building Materials2012,29,3: | 1 |
| 18 | Global carbon budg- ets simulated by the Beijing Climate Center Climate System Model for the last century显示文摘 | Wu Tongwen Li Weiping li Jinjun | 2013 | Journal of Geophysical Re- search : Atmospheres2013,118,10: | 1 |
| 19 | Hausdorff dimensions of the divergence points of self-similar measures with the open set condition 显示文摘 | Li Jinjun Wu min Xiong Yin | 2012 | Nonlinearity2012,25,: | 1 |
| 20 | Science with the 2.5-meter Wide Field Survey Telescope(WFST)显示文摘The Wide Field Survey Telescope(WFST) is a dedicated photometric surveying facility being built jointly by University of Science and Technology of China(USTC) and the Purple Mountain Observatory(PMO). It is equipped with a 2.5-meter diameter primary mirror, an active optics system, and a mosaic CCD camera with 0.73 gigapixels on the primary focal plane for highquality image capture over a 6.5-square-degree field of view. The installation of WFST near the summit of Saishiteng mountain in the Lenghu region is scheduled in summer of 2023, and the operation is planned to start three months later. WFST will scan the northern sky in four optical bands(u, g, r and i) at cadences from hourly/daily in the deep high-cadence survey(DHS) program, to semi-weekly in the wide field survey(WFS) program. During a photometric night, a nominal 30 s exposure in the WFS program will reach a depth of 22.27, 23.32, 22.84, and 22.31(AB magnitudes) in these four bands, respectively, allowing for the detection of a tremendous amount of transients in the low-z universe and a systematic investigation of the variability of Galactic and extragalactic objects. In the DHS program, intranight 90 s exposures as deep as 23(u) and 24 mag(g), in combination with target of opportunity follow-ups, will provide a unique opportunity to explore energetic transients in demand for high sensitivities, including the electromagnetic counterparts of gravitational wave events, supernovae within a few hours of their explosions,tidal disruption events and fast, luminous optical transients even beyond redshift of unity. In addition, the final 6-year co-added images, anticipated to reach g■25.8 mag in WFS or 1.5 mags deeper in DHS, will be of fundamental importance to general Galactic and extragalactic science. The highly uniform legacy surveys of WFST will serve as an indispensable complement to those of the Vera C. Rubin Observatory's Legacy Survey of Space and Time(LSST) that monitors the southern sky. | Tinggui Wang Guilin Liu Zhenyi Cai Jinjun Geng Min Fang Haoning He Ji-an Jiang Ning Jiang Xu Kong Bin Li Ye Li Wentao Luo Zhizheng Pan Xuefeng Wu Ji Yang Jiming Yu Xianzhong Zheng Qingfeng Zhu Yi-Fu Cai Yuanyuan Chen Zhiwei Chen Zigao Dai Lulu Fan Yizhong Fan Wenjuan Fang Zhicheng He Lei Hu Maokai Hu Zhiping Jin Zhibo Jiang Guoliang Li Fan Li Xuzhi Li Runduo Liang Zheyu Lin Qingzhong Liu Wenhao Liu Zhengyan Liu Wei Liu Yao Liu Zheng Lou Han Qu Zhenfeng Sheng Jianchun Shi Yiping Shu Zhenbo Su Tianrui Sun Hongchi Wang Huiyuan Wang Jian Wang Junxian Wang Daming Wei Junjie Wei Yongquan Xue Jingzhi Yan Chao Yang Ye Yuan Yefei Yuan Hongxin Zhang Miaomiao Zhang Haibin Zhao Wen Zhao | 2023 | Science China(Physics,Mechanics & Astronomy)2023,66,10: | 1 |