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Aqueous Networks and Toroids of Amphiphilic Block Copolymer with Non-ionic Surfactants
Fu, Jun,Kim, Dong Ha,Knoll, Wolfgang WILEY-VCH Verlag 2009 CHEMPHYSCHEM -WEINHEIM- Vol.10 No.8
<P>Network formation: Comicellization of polystyrene-block-polyethylene oxide (PS–PEO) with non-ionic surfactants leads to the formation of networks and chains of spheres. The aqueous network solutions are responsive to dilution, undergoing morphological transformations to cylinders with Y junctions and both two- and three-dimensional toroids (see figure). <img src='wiley_img/14394235-2009-10-8-CPHC200900081-content.gif' alt='wiley_img/14394235-2009-10-8-CPHC200900081-content'> </P> <B>Graphic Abstract</B> <P>Network formation: Comicellization of polystyrene-block-polyethylene oxide (PS–PEO) with non-ionic surfactants leads to the formation of networks and chains of spheres. The aqueous network solutions are responsive to dilution, undergoing morphological transformations to cylinders with Y junctions and both two- and three-dimensional toroids (see figure). <img src='wiley_img/14394235-2009-10-8-CPHC200900081-content.gif' alt='wiley_img/14394235-2009-10-8-CPHC200900081-content'> </P>
Strong convergence of strict pseudo-contractions in q-uniformly smooth Banach space
Fujun Liu,Fujun Liu,Qinghui Gao 한국전산응용수학회 2015 Journal of applied mathematics & informatics Vol.33 No.1
In this paper, we introduce a general iterativealgorithm for finding a common element of the common fixed point setof an infinite family of $\lambda_i$-strict pseudo-contractions andthe solution set of a general system of variational inclusions fortwo inverse strongly accretive operators in $q$-uniformly smoothBanach spaces. Then, we analyze the strong convergence of the iterative sequence generated by the proposed iterative algorithm under mild conditions.
Fujun Cao,Ping Yin,Jiang Zhang,Hou Chen,Rongjun Qu 한국공업화학회 2014 Journal of Industrial and Engineering Chemistry Vol.20 No.4
Nanoplates of cobalt phosphonate poly-Co3(LH2)2(LH3)2(H2O)4 2H2O (denoted as poly-CoAedp, L = 1- aminoethylidenediphosphononic acid anion) with two-dimensional structure has been successfully synthesized under hydrothermal conditions and applied in the removal of Pb(II) and Hg(II) ions from aqueous solutions. Poly-CoAedp has exhibited a good performance for heavy metal removal, especially for Pb(II). The effects of different experimental parameters on the competitive adsorption capacities were investigated. The research results suggest that the nanoplates of poly-CoAedp have great potential applications in environmental protection, and the good adsorption ability make it a good promising candidate material for lead removal.
Fujun Sun,Jianqin Suo,Zhenxia Liu 대한기계학회 2022 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.36 No.1
According to the tendency of incorporating fuel jet holes into swirler-vanes, as well as the advantages of wide operating boundary conditions and low NO x emissions of low swirl injectors for land-based gas turbines, an original lean premixed injector with convergent outlet was proposed in this paper. Based on the lean premixed injector, this paper presented laser diagnostic experiments and numerical simulations of flowfields and fuel/air premixing uniformities of S30 and S40. The results show that the axial size and the radial size of main recirculation zone (MRZ) of S30 are both smaller than those of S40, which can decrease residence time and is beneficial to NO x reduction for S30. Furthermore, the MRZ of S30 are far from the convergent outlet, which can produce detached flames and reduce the risk of flashback. The SMV at S40 and S30 convergent outlet are 0.0008 and 0.0002, respectively, both of which are lower than 0.001, which shows that both S30 and S40 obtain good fuel/air premixing uniformities. These results demonstrate that S30 (low swirl injectors) constitutes a promising technology for low emission gas turbine combustors.
The Power Analysis and Its Control of Two-phase Orthogonal Power Supply for the Continuous Casting
Fujun Ma,An Luo,Qiaopo Xiong 대한전기학회 2015 Journal of Electrical Engineering & Technology Vol.10 No.3
In order to improve the quality of the billet continuous casting, a two-phase orthogonal power supply (TPOPS) for electromagnetic stirrer is researched, which is composed of three-phase PWM rectifier and three-leg inverter. According to the power analysis of system, the ripple of dc-link voltage is analyzed and its analytical expression is derived. In order to improve the performance of electromagnetic stirring, an integrated control method with feedforward control is proposed for PWM rectifier to suppress the fluctuations of dc-link voltage and provide a stable dc source for inverter. According to the simplified equivalent model, a composite current control method is proposed for inverter. This proposed method can combine the merits of feedforward control with feedback control to effectively improve the dynamic output performance of TPOPS. Finally, a 300kVA prototype of TPOPS is developed, and the results have verified the analysis and control method.
The Power Analysis and Its Control of Two-phase Orthogonal Power Supply for the Continuous Casting
Ma, Fujun,Luo, An,Xiong, Qiaopo The Korean Institute of Electrical Engineers 2015 Journal of Electrical Engineering & Technology Vol.10 No.3
In order to improve the quality of the billet continuous casting, a two-phase orthogonal power supply (TPOPS) for electromagnetic stirrer is researched, which is composed of three-phase PWM rectifier and three-leg inverter. According to the power analysis of system, the ripple of dc-link voltage is analyzed and its analytical expression is derived. In order to improve the performance of electromagnetic stirring, an integrated control method with feedforward control is proposed for PWM rectifier to suppress the fluctuations of dc-link voltage and provide a stable dc source for inverter. According to the simplified equivalent model, a composite current control method is proposed for inverter. This proposed method can combine the merits of feedforward control with feedback control to effectively improve the dynamic output performance of TPOPS. Finally, a 300kVA prototype of TPOPS is developed, and the results have verified the analysis and control method.