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中低温煤焦油重油正庚烷萃余物的反应(甲醛)分离与分析   总被引:1,自引:0,他引:1  
以陕北中低温煤焦油重油为原料,采用正庚烷溶剂萃取得到煤焦油正庚烷萃余物(H-CT)并与甲醛反应,通过溶剂萃取法将反应后产物(P)分为:正庚烷可溶物(HS-P)、正庚烷不溶甲苯可溶物(HI-TS-P)、甲苯不溶喹啉可溶物(TI-QS-P)和喹啉不溶物(QI-P)。借助GC-MS、FT-IR、TG-FTIR等分析手段,对P的结构组成进行了表征。结果表明,与H-CT相比,P中TI-QS-P组分和氧原子的含量较多,C/H原子比较高;HS-P、HI-TS-P、TI-QS-P和QI-P的含量分别为11.63%、26.42%、57.08%和4.88%;HS-P和HI-TS-P均以中性组分(以芳烃为主)为主,酸性组分(以酚类为主)含量较少,其余为含O、N、S等杂原子化合物;TI-QS-P富集了羰基、亚甲基桥键及稠环芳香化合物,且含酚羟基及芳环取代物,具有较高的热稳定性。  相似文献   
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This paper is concerned with the global stabilization of state-dependent switching neural networks(SDSNNs)viadiscontinuous event-triggered control with network-induced communication delay.Aiming at decreasing triggering times,a discontinuous event-trigger scheme is utilized to determine whether the sampling information is required to be sent outor not.Meanwhile,under the effect of communication delay,the trigger condition and SDSNNs are transformed into twotractable models by designing a fictitious delay function.Then,using the Lyapunov–Krasovskii stability theory,someinequality estimation techniques,and extended reciprocally convex combination method,two sufficient criteria are established for ensuring the global stabilization of the resulting closed-loop SDSNNs,respectively.A unified framework isderived that has the ability to handle the simultaneous existence of the communication delay,the properties of discontinuousevent-trigger scheme,as well as feedback controller design.Additionally,the developed results demonstrate a quantitativerelationship among the event trigger parameter,communication delay,and triggering times.Finally,two numerical examples are presented to illustrate the usefulness of the developed stabilization scheme.  相似文献   
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周小朋  曾鑫宁  宁旭阳  阿布都沙拉木·阿布都克力木  陈葳  谌勋  陈云华  程晨  崔祥仪  樊英杰  方德清  符长波  付孟婷  耿立升  Karl Giboni  顾琳慧  郭绪元  韩柯  何昶达  黄迪  黄焱  黄彦霖  黄周  季向东  巨永林  李帅杰  刘华萱  刘江来  芦晓盈  马文博  马余刚  冒亚军  孟月  倪恺翔  宁金华  任祥祥  商长松  申国防  司琳  谈安迪  王安庆  王宏伟  王萌  王秋红  王思广  王为  王秀丽  王舟  武蒙蒙  吴世勇  邬维浩  夏经铠  肖梦姣  谢鹏伟  燕斌斌  杨继军  杨勇  喻纯旭  袁鞠敏  袁影  张丹  张涛  赵力  郑其斌  周济芳  周宁 《中国物理快报》2021,(1):30-34
We report a search for new physics signals using the low energy electron recoil events in the complete data set from PandaX-Ⅱ,in light of the recent event excess reported by XENON1 T.The data correspond to a total exposure of 100.7 ton·day with liquid xenon.With robust estimates of the dominant background spectra,we perform sensitive searches on solar axions and neutrinos with enhanced magnetic moment.It is found that the axionelectron coupling gAe<4.6×10-12 for an axion mass less than 0.1 keV/c2 and the neutrino magnetic moment μv<4.9×10-11μB at 90%confidence level.The observed excess from XENON1 T is within our experimental constraints.  相似文献   
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