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- 저자 : Yanmei Liao (검색결과 2 건)
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Yuan Liu,Yanmei Liao,Yintao Long,Yuxiang Qian,Shengqiang Nie,Yi Wang,Jia Zeng,Chunmei Zhang,Linbo Tian,Jun Luo 한국고분자학회 2022 폴리머 Vol.46 No.3
It is a considerable challenge for expanding the applications of self-healing polyurethane because of the dilemma in balancing its mechanical and self-healing properties. Herein, a series of self-healing polyurethane systems (PUT-x) with short-range ordered rigid aromatic structures were synthesized by simply adjusting two kinds of diisocyanates, and by ingenious addition of aromatic chain extender. We hope to regulate the π-π interactions and further to manipulate the properties of obtained polyurethanes via adjusting the amount of the benzene rings in the molecular chains of the PUT-x systems. The PUT-5 with decent self-healing ability, optimal mechanical properties, acceptable thermal stability and favorable transparency was selected to incorporate liquid metal and fluorescent powder to fabricate conductive wire and anti-counterfeiting film. Significantly, the liquid metal could be recycled from the conductive wire conveniently without using strong acids or strong bases. Moreover, PUT-5 exemplarily withstood long-term soaking in normal saline, and no deformation could be identified.
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Xu Xiangnan,Lei Xihong,Zou Guoyuan,Liao Shangqiang,Sun Na,Sun Yanxin,Li Yanmei 한국원예학회 2024 Horticulture, Environment, and Biotechnology Vol.65 No.1
The drought stress created by defi cit irrigation has been widely introduced into production for fruit quality improvement, whilst silicon is considered as a functional element in plant antistress process. To explore the infl uence of defi cit irrigation and silicon application on the strawberry fruit quality and the plant’s response to drought stress, a split-plot experiment was conducted. The impacts of the treatments start-time was also evaluated. The plants were subjected to two irrigation regimes, defi cit irrigation (DI) or full irrigation, and two foliar sprays, 0.01 mol L − 1 Na 2 SiO 3 (Si) or water, with two treatment start-time, as after fi rst bloom (Fr) or after transplanting. Therefore, there were 6 diff erent treatments (consider ing treatment start-time) and a control group, which were DI, FrDI, Si, FrSi, DISi, FrDISi and CK. As a result, the DI signifi cantly increased the leaf ascorbate, leaf anthocyanins and specifi c leaf weight by 93.5%, 109.9% and 24.5%, but it also reduced fruit reducing sugars concentration and single fruit mass by 25.1% and 12.6%, respectively. Whilst the FrDI increased specifi c leaf weight by 27.9% and had no negative eff ect on fruit quality. The timing of starting silicate spray didn’t infl uence leaf morphology or fruit quality, but the FrSi signifi cantly increased the percentage of leaf sucrose to total sugars by 9.0%, and the Si didn’t. The DISi and FrDISi tended to increase the concentration of fruit sugars, glutamate, polyphenols, and organic acids. Although the DISi showed more obvious eff ect on improving the fruit nutritive values, the FrDISi tended to have lighter negative impact on fruit size, compared to CK. We concluded that the combination of defi cit irrigation and silicate spray started after the fi rst bloom could eff ectively improve the fruit sugars, glutamate and polyphenols, without reducing the fruit size, due to the mitigation of plant antistress response.
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