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RISS 인기검색어
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- 저자 : Jinjing Li (검색결과 3 건)
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Network Attack Defense Awareness based on Dynamic Game
Man Li,Jinjing Cao 보안공학연구지원센터 2015 International Journal of Security and Its Applicat Vol.9 No.7
By defining attack-defense action sequence and utility function of both sides, combine with dynamic Bayes game theory to analyze the confrontation and interdependence between the two agents’ strategies. Dynamic Bayes attack-defense game model can describe each possible strategy in every stage. This paper proposes the construction method of game extensive form by utilizing attack-defense confrontation model, and presents the equilibrium strategy solution algorithm.
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Effect of Mixed Solvents on the Structure and Properties of PLLA/PDLA Electrospun Fibers
Xing Cao,Wei Wang,Jinjing Hu,Jiaming Wan,Li Cui 한국섬유공학회 2020 Fibers and polymers Vol.21 No.5
The electrospinning of poly(L-lactic acid)/poly(D-lactic acid) (PLLA/PDLA) microfiber membranes were carriedout with dichloromethane (DCM), DCM/ethanol, DCM/acetone, DCM/hexane as the spinning solvent. Scanning electronmicroscope observation showed that the electrospun fiber obtained using DCM/ethanol (L/D-DE) mixed solvent washomogeneous without visible bead, which was better than any others. Moreover, plenty of pores could be found on thesurface of the fibers obtained using the mixed solvents. The porous structure of fibers was significantly influenced by theethanol (non-solvent) content. When the DCM/ethanol was 50:10 (v/v), the fibers were uniform and had isolated pores. XRDand DSC results indicated that the exclusive stereocomplex poly(lactide acid) (sc-PLA) crystallites without anyhomocrystallites poly(lactide acid) (hc-PLA) did form in all types of fibers. The crystallinity of sc-PLA in the L/D-DE fiberwas higher than other samples due to the slowest evaporation rate. TGA test further indicated that the thermal stabilities ofPLLA/PDLA electrospun fibers were slightly better than the PLLA. Furthermore, L/D-DE had the excellent mechanicalproperties and underwent the course of ductile fracture. Possible mechanisms accounting for the morphologies and tensileproperties were also proposed in this study.
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Zhe Xiang,Xi Zhao,Guoxiang Wang,Chenze Qi,Sujing Zhou,Jinjing Li,Yong Gao 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.117 No.-
Pickering emulsions were promising platforms for the heterogeneous reactions due to both their largeinterfacial areas and high stability, whereas both the product separation and the emulsifier recoveryvia simple and efficient strategies for remain a concern. In this study, we constructed an efficient andrecyclable platform for interfacial catalytic reaction adopting pH-responsive n-decane-in-waterPickering emulsions. Pickering emulsions were prepared employing core cross-linked PEO45-PGMA74(CCE45G74) diblock copolymer worms as Pickering emulsifiers. CCE45G74 diblock copolymer worms wereprepared via the combination of photo-initiated polymerization induced self-assembly strategy and thecore covalent cross-linking with ethylenediamine. The prepared n-decane-in-water Pickering emulsionsshowed a high stability during the storage at the room temperature, whereas a rapid demulsification tookplace at a lower pH, such as 2.5. Alkali-catalyzed Claisen-Schmidt condensation reactions between benzaldehydeand acetone were conducted in n-decane-in-water Pickering emulsions at 30 C. The yield ofdibenzylidene acetone could reach 99% after 12 h of reaction. The reaction efficiency was far higher thanthat at the plain n-decane-water (30%). This catalytic platform could be repeatedly used for three cycles
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