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| 1 | On the viscosity of magnetic fluid with low and moderate solid fraction显示文摘The design of a pressurized capillary rheometer operating at prescribed temperature is described to measure the viscosity of magnetic fluids(MFs) containing Fe3O4 magnetic nanoparticles(MNPs).The equipment constant of the rheometer was obtained using liquids with predetermined viscosities.Experimentally measured viscosities were used to evaluate different equations for suspension viscosities.Deviation of measured suspension viscosities from the Einstein equation was found to be basically due to the influence of spatial distribution and aggregation of Fe3O4 MNPs.By taking account of the coating layer on MNPs and the aggregation of MNPs in MFs,a modified Einstein equation was proposed to fit the experimental data.Moreover,the influence of external magnetic field on viscosity was also taken into account.Viscosities thus predicted are in good agreement with experimental data.Temperature effect on suspension viscosity was shown experimentally to be due to the shear-thinning behavior of the MFs. | Zhiqiang Ren Yanping Han Ruoyu Hong Jianmin Ding Hongzhong Li | 2008 | Particuology2008，6，3： | 5 |
| 2 | Comparison of schemes for preparing magnetic Fe_3O_4 nanoparticles显示文摘Magnetic Fe3O4 nanoparticles were prepared by means of coprecipitation using NH3·H2O in water and in alcohol, and using NaOH in water. A series of instruments such as SEM, TEM, HRTEM, FT-IR, XRD and VSM were used to characterize the properties of the magnetic nanoparticles. The results indicated that the magnetism of Fe3O4 nanoparticles synthesized using NH3·H2O in water was the highest, although the reaction time was the longest. The process using NaOH in water was the simplest and the reaction time was the shortest, but the particle characteristics were inferior to those of the other two methods. The mean size of magnetic Fe3O4 nanoparticles prepared by coprecipitation in alcohol was the smallest among the three, but the nanoparticles aggregated severely. The magnetic Fe3O4 nanoparticles were coated with oleic acid using saturated sodium oleate, and the polarity of the surface-modified nanoparticles was measured. Fe3O4 nanoparticles prepared using NH3·H2O, not NaOH, could be coated successfully and thoroughly. | Ruoyu Hong Jianhua Li Jian Wang Hongzhong Li | 2007 | China Particuology2007，5，1： | 5 |
| 3 | A CORRELATION EQUATION FOR CALCULATING INCLINED JET PENETRATION LENGTH IN A GAS-SOLID FLUIDIZED BED显示文摘Numerical simulation of gas-solid flow in a two-dimensional fluidized bed with an inclined jet was performed. The numerical model is based on the two-fluid model of gas and solids phase in which the solids constitutive equations are based on the kinetic theory of granular flow. The improved ICE algorithm, which can be used for both low and high-velocity fluid flow, were used to solve the model equations. The mechanism of jet formation was analyzed using both numerical simulations and experiments. The emergence and movement of gas bubbles were captured numerically and experimentally. The influences of jet velocity, nozzle diameter, nozzle inclination and jet position on jet penetration length were obtained. A semi-empirical expression was derived and the parameters were correlated from experimental data. The correlation equation, which can be easily used to obtain the inclined jet penetration length, was compared with our experimental data and published correlation equations. | Ruoyu Hong Haibing Li Jianmin Ding Hongzhong Li | 2005 | China Particuology2005，3，5： | 3 |
| 4 | N, F?Codoped Microporous Carbon Nanofibers as Efficient Metal?Free Electrocatalysts for ORR显示文摘Currently, the oxygen reduction reaction(ORR) mainly depends on precious metal platinum(Pt) catalysts. However, Pt-based catalysts have several shortcomings, such as high cost, scarcity, and poor long-term stability. Therefore, development of e cient metal-free electrocatalysts to replace Pt-based electrocatalysts is important. In this study, we successfully prepared nitrogen-and fluorinecodoped microporous carbon nanofibers(N, F-MCFs) via electrospinning polyacrylonitrile/polyvinylidene fluoride/polyvinylpyrrolidone(PAN/PVDF/PVP) tricomponent polymers followed by a hydrothermal process and thermal treatment, which was achieved for the first time in the literature. The results indicated that N, F-MCFs exhibit a high catalytic activity(E_(onset): 0.94 V vs. RHE, E_(1/2): 0.81 V vs. RHE, and electron transfer number: 4.0) and considerably better stability and methanol tolerance for ORR in alkaline solutions as compared to commercial Pt/carbon(Pt/C, 20 wt%) catalysts. Furthermore, in acidic media, N, F-MCFs showed a four-electron transfer pathway for ORR. This study provides a new strategy for in situ synthesis of N, F-MCFs as highly e cient metal-free electrocatalysts for ORR in fuel cells. | Tianle Gong Ruoyu Qi Xundao Liu Hong Li Yongming Zhang | 2019 | Nano-Micro Letters2019，11，1： | 3 |
| 5 | Application of Bronsted acid ionic liquids as green catalyst in the synthesis of 2-propanol with reactive distillation显示文摘Five Br?nsted acidic ionic liquids(ILs) were prepared and characterized by FT-IR,~1H NMR and ^(13)C NMR. Their catalytic activities for the synthesis of 2-propanol(IPOH) via transesterification of isopropyl acetate(IPAc) with methanol(Me OH) were investigated. Among all the tested ILs, [Ps-mim]HSO_4 performed best and was used as catalyst for further studies. The reaction kinetics were carried out to correlate the parameters in a homogeneous second order kinetic model. It has been found that there is close agreement between the calculated and experimental values. The high-pressure batch reactive distillation experimental apparatus was set up in order to enhance the conversion of IPAc. A high conversion of IPAc of 99.4% was obtained under the optimal reaction conditions. The catalyst [Ps-mim]HSO_4 can be recycled easily by a rotary evaporator and reused without any further treatment. The catalyst had been repeatedly used for four times and no obvious changes in the structure of catalyst could be observed. | Jinbei Yang Dongren Cai Ting Zeng Lihua Zhou Ling Li Ruoyu Hong Ting Qiu | 2016 | Chinese Journal of Chemical Engineering2016，24，11： | 3 |
| 6 | Preparation and characterization of carbonyl iron/strontium hexaferrite magnetorheological fluids显示文摘The heat transfer oil-based magnetorheological fluid(MRF) was prepared using oleic acid-modified micron carbonyl iron powder as a magnetic dispersed phase and strontium hexaferrite(SrFe_(12)O_(19))nanoparticles as an additive.The sedimentation stability of MRFs was studied.The results indicated that the stability of MRFs was improved remarkably by adding SrFe_(12)O_(19) nanoparticles and the sedimentation ratio was only 0.88 in 20 days when the content of nanoparticles reached 10 wt%.The Theological properties were characterized by a HAAKE rheometer without a magnetic field and a capillary rheometer with and without a magnetic field.The effects of SrFe_(12)O_(19) nanoparticles,the temperature,and magnetic field strength were investigated.In addition,the rheological properties could be predicted well using the improved Herschel-Bulkley model,even under a magnetic field.A theoretical model was also proposed to predict the yield stress based on the microstructure of the MRF under an applied magnetic field. | Jianrong Liu Xianjun Wang Xia Tang Ruoyu Hong Yaqiong Wang Wenguo Feng | 2015 | Particuology2015，13，5： | 3 |
| 7 | Effect of Quercetin on Breeding and Apoptosis of Cervical Cancer HeLa Cell and on Growth of Transplanted Tumor in Nude Mice显示文摘Effect of quercetin on HeLa cell system of cervical cancer was studied by methods of MTT and Annexin V-FITC/PI. The results show that quercetin has functions of inhibiting breeding of HeLa cells and inducing apoptosis of the cells. The total apoptosis rate is positively proportional to reaction duration and concentration of quercetin used. The maximum apoptosis rate being (88.76±2.35)% was obtained when the concentration was 50.0 μmol/L and the cells were treated with quercetin for 72 hours. Based on establishing a model of tumor of cervical cancer transplanted into nude mice,quercetin of different concentrations was injected into abdominal cavity of nude mice and situation of tumor growth was reviewed. The result showed that with quercetin concentration increasing from 0 to 100.0 μmol/L,the transplantation volume and weight of the tumors decreased from (279.59±70.58) mm3 and ( 0.145±0.019) g to (128.72±36.12) mm3 and (0.089± 0.019) g respectively,while apoptosis rate of the transplanted tumor increased from (9.63±1.85)% to (34.98±0.47)%,which proved that quercetin inhibited increment of volume and weight of transplanted tumor in nude mice bodies. | ZHANG Wei XU Xiaoxia CHEN Hong ZHANG Jie ZHANG Xiaobing LUO Ruoyu FANG Furong | 2007 | Wuhan University Journal of Natural Sciences2007，12，3： | 2 |
| 8 | Solvothermal synthesis of magnetic Fe_3O_4 microparticles via self-assembly of Fe_3O_4 nanoparticles显示文摘Ferromagnetic Fe 3 O 4 nanoparticles were synthesized and then self-assembled into microparticles via a solvothermal method,using FeCl 3 ·6H 2 O as the iron source,sodium oleate as the surfactant,and ethylene glycol as the reducing agent and solvent.The obtained Fe 3 O 4 microparticles were characterized by X-ray powder diffraction (XRD),X-ray photoelectron spectroscopy (XPS),Raman spectroscopy and vibrating sample magnetometer (VSM).The size and morphology of the particles were examined using transmission electron microscopy (TEM) and scanning electron microscopy (SEM).The Fe 3 O 4 microparticles of nearly monodisperse diameters,controllable in the range of 120-400 nm,consist of assemblies of Fe 3 O 4 nanoparticles with a diameter of 22 nm.The effects of reaction time,amount of surfactant and NaAc on the products were discussed.Interestingly,by using the pre-synthesized Fe 3 O 4 microparticles as the growth substrates,spherical and smooth-looking Fe 3 O 4 microparticles with average diameter of 1 m were obtained.A plausible formation process was discussed. | Wei Zhang Fenglei Shen Ruoyu Hong | 2011 | Particuology2011，9，2： | 2 |
| 9 | Joint Base Station Clustering and Beamformer Design for Partial Coordinated Transmission in Heterogeneous Networks 显示文摘 | Hong Mingyi Sun Ruoyu Hadi B | 2013 | IEEE Journal on Selected Areas Communications2013，31，2： | 1 |
| 10 | pUGTdb:A comprehensive database of plant UDP-dependent glycosyltransferases显示文摘Dear Editor,Plant UDP-dependent glycosyltransferases(UGTs),belonging to the carbohydrate-active enzyme glycosyltransferase 1 family(Louveau and Osbourn,2019),not only play important roles in adaptation to various environments(Cai et al.,2020;Pastorczyk-Szlenkier and Bednarek,2021)but also endow plant natural products with great pharmaceutical and ecological significance(Margolin et al.,2020).In recent years,an increasing number of plant UGTs have been characterized to function in the biosynthesis of many bioactive compounds such as ginsenosides(Wei et al.,2015),breviscapine(Liu et al.,2018),and rubusoside(Xu et al.,2022). | Yuqian Liu Qian Wang Xiaonan Liu Jian Chengi Lei Zhang Huanyu Chu Ruoyu Wang Haoran Li Hong Chang Nida Ahmed Zhonghua Wang Xiaoping Liao Huifeng Jiang | 2023 | Molecular Plant2023，16，4： | 1 |
| 11 | Synthesis and Surface Modification of ZnO Nanoparticles 显示文摘 | Hong Ruoyu Pan Tingting Qian Jianzhong | 2006 | Chemical Engineering Journal2006，，119： | 1 |
| 12 | Synthesis and Characterization of PMMA Grafted ZnO Nanoparticles显示文摘 | Hong Ruoyu Qian Jianzhong Cao JX | 2006 | Powder Technology2006，，163： | 1 |
| 13 | Synthesis and surface modification of ZnO nanoparticles显示文摘 | Hong Ruoyu Pan Tingting Qian Jianzhou | 2006 | Chem Eng2006，119，23： | 1 |
| 14 | Preparation of Fe 3 O 4 –chitosan nanoparticles used for hyperthermia显示文摘 | Jingmiao Qu Guang Liu Yiming Wang Ruoyu Hong | 2010 | Advanced Powder Technology2010，，4： | 1 |
| 15 | Preparation of ATO nanorods and electrical resistivity analysis显示文摘 | LU Haifeng HONG Ruoyu WANG Liaosha | 2012 | Materials Letters2012，68，： | 1 |
| 16 | Synthesis and surface modification of ZnO nanoparticles显示文摘 | HONG Ruoyu PAN Tingting QIAN Jianzhong LI Hongzhong | 2006 | CHEMICAL ENGINEERING JOURNAL2006，119，： | 1 |
| 17 | Synthesis and surface modification of ZnO nanopartieles 显示文摘 | Hong Ruoyu Pan Tiogting Qian Jianzhong Li Hongzhong | 2006 | Chemical Engineering Journal2006，119，： | 1 |
| 18 | 显示文摘 | Hong Ruoyu Li Jianhua Wang Jian | 2007 | China Partic- uology2007，5，12： | 1 |
| 19 | 显示文摘 | Hong Ruoyu Wang Jian Li Jianhua | 2004 | Chin J Process Eng2004，，： | 1 |
| 20 | Synthesis and Surface Modification of ZnO Nanoparticles显示文摘 | Hong Ruoyu Pan Tingting Qian Jianzhong | 2006 | Chemical Engineering Journal2006，119，23： | 1 |
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