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Hou J.,Nanjing University | Hou J.,Comprehensive Technology Center | Fu J.,Nanjing University | Zhang Z.-M.,Nanjing University | Zhu H.-L.,Nanjing University
Fudan University Journal of Medical Sciences | Year: 2011

Caffeic acid, a kind of common phenolic acid, frequently exists in fruits, grains and traditional Chinese herbs. The various biological activities of caffeic acid derivatives, including antioxidant, anti-bacterial, anti-tumor, hepatoprotection, etc, have aroused widespread concern and research. And new biological activities are constantly being disclosed. Meanwhile, because of their structural diversities, a wide range of chemical synthesis taking caffeic acid derivatives as precursors are being conducting. Thus,this review combining our research aims to summarize the research results on the biological activity and chemical synthesis of caffeic acid derivatives.


Bai L.Y.,Jiangxi Science and Technology Normal University | Jiang L.F.,Comprehensive technology center
Advanced Materials Research | Year: 2014

This paper describes the necessity of the construction of electronic ceramic bilingual curriculum, and analysis the situation of teachers in the lessons preparing, teaching and examine segments in practice, in order to provide reference for the construction of the other bilingual courses With the entry of China to WTO and the speeding up of economic globalization process, the society needs more and more talents who have both professional knowledge and international communication skills. As the training base for inter-disciplinary talents, to practice the bilingual teaching in university is the inherent requirement of the development of the times and the internationalization of higher education. That is to say that, bilingual teaching just appears under the background of information and globalization of the higher education. The ministry of education promulgated the "Opinions on Strengthening Undergraduate Teaching to Improve the Teaching Quality" in 2001, to encourage and promote the use of foreign language in lessons teaching[1]. To further promote the development of bilingual teaching, the ministry of education decided to start the bilingual teaching demonstrate course construction project in 2007, which was according to "views of the ministry of education and finance on the implementation of undergraduate teaching quality and teaching reform project "[2]. © (2014) Trans Tech Publications, Switzerland.


Bail L.Y.,Jiangxi Science and Technology Normal University | Jiang L.F.,Comprehensive technology center | Chen Y.,Jiangxi Science and Technology Normal University
Advanced Materials Research | Year: 2013

Carbon nano-tubes (CNTs) doped TiO2/glass fiber reinforced plastics (GRP) hybrid materials were prepared by first step sol-gel and then hand lay-up method, using modified CNTs doped tetrabutyltitanate as precursor. The results showed that TiO2 component as the inorganic material, could improve the high temperature stability of the GRP, and the latticework structure of the hybrid material could disperse the CNTs well and prevented them from gathering at high temperature. © (2013) Trans Tech Publications, Switzerland.


Yang X.,Jiangsu University | Shen X.,Jiangsu University | Jing M.,Jiangsu University | Liu R.,Jiangsu University | And 2 more authors.
Journal of Nanoscience and Nanotechnology | Year: 2014

The binary nano zero-valent iron/barium ferrite (NZVI/BFO) microfibers with uniform diameters and high porosity were prepared by the organic gel-thermal selective reduction process. The composite microfibers are fabricated from nano zero-valent iron and nano BaFe12O19 grains. The effects of pH, adsorbent dosage, and contact time on the adsorption of heavy metals and dyes have been investigated. The adsorption isotherms of heavy metals and dyes on the microfibers are well described by the Langmuir model, in which the estimated adsorption capacities are 14.5, 29.9, 68.3 and 110.4 mg/g for Pb(II), As(V), Congo red and methylene blue, respectively. After five cycles, these microfibers still exhibit a high removal efficiency for As(V), Pb(II), Congo red and methylene blue. The enhanced adsorption characteristics can be attributed to the porous structure, strong surface activity and electronic hopping. Therefore, the magnetic NZVI/BFO microfibers can be used as an efficient, fast and high capacity adsorbent for heavy metals and dyes removal. Copyright © 2014 American Scientific Publishers All rights reserved.


Liu R.,Jiangsu University | Lu Y.,Jiangsu University | Lu Y.,Comprehensive Technology Center | Shen X.,Jiangsu University | And 2 more authors.
Water, Air, and Soil Pollution | Year: 2012

Abstract The magnetic, nanocrystalline Fe 0.2(Co 20 Ni 80) 0.8 alloy porous microfibers were prepared by the citrate gel thermal decomposition and reduction process. The morphology, chemical composition, microstructure, and magnetic properties of the microfibers were investigated by X-ray diffraction, field emission scanning electron microscopy, energydispersive X-ray, Brunauere-Emmette-Teller, and vibration sample magnetometer. The as-prepared magnetic, nanocrystalline Fe 0.2(Co 20Ni 80) 0.8 porous microfibers consisting of about 48 nm grains are characterized by diameters of 1-4 μm, specific surface area of 17.73 m 2/g, and specific magnetization of 196.7 Am2/kg. The arsenic(V) absorption on these magnetic Fe 0.2(C o20Ni 80) 0.8 porous microfibers at room temperature was determined by the ICP-AES measurement of arsenic(V) in aqueous solution. The results show that the pseudo-first-order kinetic model is consistent with the arsenic(V) adsorption process and a good correlation coefficient (R 200.9862). By comparing among the Langmuir, Freundlich, Temkin, and Redlich-Peterson models for adsorption isotherms of arsenic(V) onto the magnetic Fe 0.2(Co 20Ni 80) 0.8 porous microfibers at room temperature, the Freundlich model and Redlich-Peterson model can be used to evaluate the arsenic( V) adsorption isotherm at room temperature. The arsenic(V) equilibrium absorbance of the magnetic Fe0.2(Co 20Ni 80) 0.8 porous microfibers is up to 1.9 mg/g when the initial arsenic(V) concentration is 1.0 mg/L in aqueous solution. © Springer Science+Business Media B.V. 2012.


Bai L.-Y.,Jiangxi Science and Technology Normal University | Jiang L.-F.,Comprehensive Technology Center | Ma M.-X.,Jiangxi Science and Technology Normal University
Dongbei Daxue Xuebao/Journal of Northeastern University | Year: 2012

The fiberglass-reinforced plastic (FRP) was prepared using epoxy resin as a matrix and carbon nanotubes (CNTs) as the reinforcement which were treated by the direct drying method from the silane coupling agent. The effects of the amount of the addition CNTs on mechanical and electrical properties of the FRP composite materials with epoxy resin were explored. The results showed that the silane coupling agent effectively promoted the dispersion of CNTs in the FRP with epoxy resin, and improved the interface binding. CNTs effectively enhanced the mechanical and electrical properties of the FRP with epoxy resin. When the mass fraction of CNT addition was less than 0.05%, with the increase of the mass fraction of CNTs, the strength, toughness and conductivity of the prepared FRP with epoxy resin all increased, while the surface resistance reduced.


Bai L.Y.,Jiangxi Science and Technology Normal University | Jiang L.F.,Comprehensive technology center | Wang Y.P.,Jiangxi Science and Technology Normal University | Xu Y.Q.,Jiangxi Science and Technology Normal University
Advanced Materials Research | Year: 2014

Carbon nano-tubes (CNTs) doped TiO2/glass fiber reinforced plastics (GRP) hybrid materials with different TiO2 and CNTs contents were prepared by first step sol-gel and then hand lay-up method, using modified CNTs doped tetrabutyl titanate as precursor. The results showed that high TiO2 and CNTs contents obtained GRP with high temperature stability and high electrical conductivity, but slowed down the solidification process of epoxy resin to obtain GRP. © (2014) Trans Tech Publications, Switzerland.


Lu Y.,Jiangsu University | Lu Y.,Comprehensive Technology Center | Yang X.,Jiangsu University | Zhu J.L.,Comprehensive Technology Center | And 2 more authors.
Advanced Materials Research | Year: 2012

Strontium ferrite micro- and nanofibers have been prepared by the sol-gel process and the electrospinning with diameters about 1 μm and 100 nm, respectively. Single phase strontium ferrite fibers are formed after calcined at 750 °C for 2 hours for both the sol-gel and electrospinning processes. These strontium ferrite fibers are fabricated of nanosized particles with a hexagonal plate-like morphology, which grow with the calcination temperature. The microfiber cross-section contains multi-nanoparticles whilst the nanofiber with a necklace-like morphology is linked by nanoparticles at the calcination temperature range from 850 to 1050 °C. The magnetic properties of strontium ferrite fibers are mainly influenced by the grain size and fiber diameter. Both the strontium ferrite micro- and nanofibers calcined at 900°C for 2 hours are fabricated from single-domain grains around 56 nm and exhibit the specific saturation magnetization of 60.8 A·m 2·kg -1 (microfibers) and 59.9 A·m 2·kg -1 (nanofibers) and coercivity of 361.9 kA·m -1 (micronfibers) and 523.6 kA·m -1 (nanofibers). The coercivity difference between the micro- and nanofibers can be attributed to the different shape anisotropy energies arising from various magnetization reversal behaviors for the micro- and nanofibers.


Liu R.,Jiangsu University | Lu Y.,Jiangsu University | Lu Y.,Comprehensive Technology Center | Shen X.,Jiangsu University | And 3 more authors.
Journal of Nanoscience and Nanotechnology | Year: 2013

Magnetic Ni0.5Zn0.5Fe2O4 nanoparticles were synthesized by the facile citrate-gel process. Their morphology, chemical composition, microstructure, and magnetic properties were investigated by XRD, TEM, EDX, BET, and VSM. The as-prepared magnetic Ni 0.5Zn0.5Fe2O4 nanoparticles consisting of grains about 20 nm were characterized with specific surface area of 49.0 m2/g and magnetization of 46.1 A m2/kg. The arsenic(V) adsorption onto these magnetic Ni0.5Zn 0.5Fe2O4 nanoparticles at room temperature was determined by the ICP-AES measurement of arsenic(V) in aqueous solution. The results show that the pseudo-second-order kinetic model is fitted well to describe the arsenic(V) adsorption process with a determination coefficient (R2 = 0.9862). By comparing with the two- and three-parameter models for adsorption isotherms of arsenic(V) onto the magnetic Ni0.5Zn 0.5Fe2O4 nanoparticles at room temperature, the Temkin and Redlich-Peterson model can be used to evaluate the arsenic(V) adsorption isotherm at room temperature. The arsenic(V) equilibrium adsorption quantity is up to 7.2 mg/g for these magnetic Ni0.5Zn 0.5Fe2O4 nanoparticles when the initial arsenic(V) concentration is 3 mg/L in aqueous solution. Copyright © 2013 American Scientific Publishers.


PubMed | East China University of Science and Technology and Comprehensive Technology Center
Type: Journal Article | Journal: Guang pu xue yu guang pu fen xi = Guang pu | Year: 2014

The identification of Nanfeng mandarins from different origins was developed by using near infrared spectroscopy (NIR) and principal components analysis (PCA). Mandarins from different places in one orchard, and from different orchards in three towns of Nanfeng county were studied. Also differences among Shaowu, Liucheng and Nanfeng were investigated. Furthermore, the effect of storage time of mandarins on the PCA model was considered. The results demonstrate that there was no clear diversity of the mandarins in one origin but great differences existed among different ones. And the storage time of mandarins played little role in the discrimination model. The method of multiple scattering correction (MSC) coupled with second derivative was selected to build PCA discrimination models compared with other data pretreatment methods. The proposed model would be a reference method for origin identification of Nanfeng mandarin.

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