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THE EXTENSION OF FIXED POINT THEOREMS FOR SET VALUED MAPPING
Shi, Yimin,Ren, Limei,Wang, Xuyan 한국전산응용수학회 2003 Journal of applied mathematics & informatics Vol.13 No.1
In this paper, the Monger Probabilistic n-metric space is presented, some Hex point theorem for set valued mapping are extended to Monger probabilistic n-metric space.
Synergistic Effect and Flame-retardant Properties of Small Molecular Organic Amines and Phosphates
Xin Chen,Junkang Guo,Limei Ren,Shenyong Ren,Baojian Shen,Qiaoxia Guo 한국섬유공학회 2021 Fibers and polymers Vol.22 No.4
The flame-retardant finishing of cotton with pentaerythritol phosphate and small molecule organic amine, such asdiethylenetriamine, triethylenetetramine, diethanolamine, or isopropanolamine, was studied. The mechanical and flameretardantproperties and thermal stability of cotton fabric before and after flame-retardant finishing were investigated. Resultsrevealed that the longitudinal and latitudinal breaking strength increased. The limiting oxygen index increased from 18.7 %to 37.9-39.1 %. Vertical flame burning time and afterglow time decreased from 35.1 and 8.4 s, respectively, to 0 s. Thedamage length decreased from 30 cm to 7.1-8.4 cm. At 700 °C, the residual carbon increased from 17.69 % to 41.48-41.56 %. The experimental results show that the flame-retardant system has good flame retardant and carbonization effectson cotton and good foaming property for combustion. The experimental operation is simple, rapid, and has broad marketprospects.