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Developing a highly scalable synthetic strategy for 5-amino-4-nitrobenzo[1,2-c:3,4-c']bis([1,2,5]oxadiazole)1,b-dioxide(CL-18)and investigating the influence of crystal engineering and positional isomerization on its safety and laser ignition performance

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Defence Technology（防务技术） 2024年第11期41卷 13-21页

作者： Lei Yang zhenqi zhang Wei Du Jinshan Li Qing Ma Institute of Chemical Materials China Academy of Engineering PhysicsMianyang621900China

5-amino-4-nitrobenzo[1,2-c:3,4-c']bis([1,2,5]oxadiazole)1,6-dioxide(CL-18)exhibits significant potential as an initiating ***,its current synthesis process remains non-scalable due to low yields and safety *** this study,we have developed a simple and safe synthetic route for *** was synthesized from 3,5-dihaloanisole in a four-step reaction with an overall yield exceeding 60%,surpassing all reported yields in the ***,recrystallization of CL-18 was successfully achieved by carefully selecting appropriate solvents and antisolvents to reduce its mechanical ***,when DMF-ethanol was employed as the recrystallization solvent system,satisfactory product yield(>90%)and reduced mechanical sensitivity(IS=15 J;FS=216 N)were ***,CL-18 is derived from the rearrangement of oxygen atoms on i-CL-18 furoxan,and a comparative analysis of their physicochemical properties was *** thermal stability of both compounds is similar,with onset decomposition temperatures recorded at 186 and 182℃***,they exhibit 5 s breaking point temperatures of 236 and 237℃.Additionally,we present novel insights into the positional-isomerization-laser-ignition performance of CL-18 and its isomer i-CL-18 using laser irradiation for the first ***,our findings demonstrate that i-CL-18 exhibits enhanced laser sensitivity,as it can be directly ignited by a 1064 nm wavelength laser,whereas CL-18 lacks this characteristic.

关键词： Initiating explosive Synthetic method Crystal engineering Positional isomerization Laser ignition

High-resolution, full-color quantum dot light-emitting diode display fabricated via photolithography approach

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Nano Research 2020年第9期13卷 2485-2491页

作者： Wenhai Mei zhenqi zhang Aidi zhang Dong Li Xiaoyuan zhang Haowei Wang Zhuo Chen Yanzhao Li Xinguo Li Xiaoguang Xu BOE Technology Group Co. Ltd.Beijing 100176China School of Software&Microelectronics Department Peking UniversityBeijing 102600China

Displays play an extremely important role in modern information society,which creates a never-ending demand for the new and better products and *** latest requirements for novel display technologies focus on high resolution and high color *** emerging technologies that include organic light-emitting diode(OL ED),micro light-emiting diode(micro-LED),quantum dot light-emitting diode(QLED),laser display,holographic display and others,QLED is promising owing to its intrinsic high color gamut and the possibility to achieve high resolution with photolithography ***,previously demonstrated photolthography techniques suffer from reduced device performance and color Impurities in subpixels from the *** this study,we demonstrated a sacrificial layer assisted patterming(SLAP)approach,which can be applied in conjunction with photolithography to fabricate high-resolution,full-colo quantum dot(QD)*** this approach,the negative photoresist(PR)and sacrificial layer(SL)were uilized to determine the pixels for QD deposition,while at the same time the SL helps protect the QD layer and keep it intact(named PR-SL approach).To prove this method's viability for QLED display manufacture,a 500-ppi,full-color passive matrix(PM)-QLED prototype was fabricated via this *** show that there were no color impurities in the subpixels,and the PM-QL ED has a high color gamut of 114%National Television Standards Committee(NTSC).To the best of our knowledge,this is the first ull-olor QLED prototype with such a high *** anticipate that this innovative patteming technique will open a new horizon for future display technologies and may lead to a disruptive and innovative change in display industry.

关键词： quantum dots sacrificial layer assisted patterning quantum dot light-emitting diodes photolithography high-resolution

Identification and Analysis of the Intermediates from Photodegradation of 3,3′-diamino-4,4′-azoxyfurazan(DAAF)by SERS and HPLC–MS/MS

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Journal of Analysis and Testing 2024年第3期8卷 351-360页

作者： Qi Wu zhenqi zhang Wenxu Zheng Juan Li Nan Ma Rui Li Bo Yang Weimiao Wang Xiaodong Li Meikun Fan Faculty of Geosciences and Environmental Engineering Southwest Jiaotong UniversityChengdu611756China Institute of Chemical Materials China Academy of Engineering PhysicsMianyang621900China College of Materials and Energy South China Agricultural UniversityGuangzhou510642China Southwest University of Science and Technology Mianyang621010China

Understanding the structural changes and degradation mechanisms of organic pollutants is critical in environmental *** this work,a xenon lamp was used as an analog light source to simulate the effect of sunlight on 3,3′-diamino-4,4′-azoxyfurazan(DAAF)in aqueous *** high-performance liquid chromatography coupled with tandem mass spectrometry(HPLC–MS/MS),surface-enhanced Raman spectroscopy(SERS)with density functional theory(DFT),the degradation intermediates and mechanisms of DAAF were *** sequential breakdown of the–NH2 and–O–N=bonds,followed by the removal of atomic O from–N=N(O)–,was emphasized and investigated using two-dimensional correlation spectroscopy(2D-COS)and SERS *** intermediates with mass-to-charge ratios(m/z)181,251 and 180 were identified and characterized by integrating experimental SERS data with DFT-calculated Raman spectra based on structures hypothesized from MS *** findings from HPLC–MS and SERS not only corroborate each other but also provide a foundation for a detailed examination of the DAAF degradation process.

关键词： DAAF Photodegradation products Reaction pathways Surface-enhanced Raman spectroscopy(SERS) High-performance liquid chromatography coupled with tandem mass spectrometry(HPLC-MS/MS)

γ-TiAl金属间化合物研究现状与未来展望

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材料导报 2000年第2期14卷 31-33页

作者：闫蕴琪张振祺周廉西安交通大学材料强度国家重点实验室西安710049 西北有色金属研究院西安710016

综述了γ-TiAl化合物的研究现状和未来发展动向。总结了显微组织与性能关系、脆性机理及合金化、改进组织等解决办法。

关键词：显微组织性能脆性金属间化合物钛铝合金

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电流互感器饱和对继电保护影响的分析及对策

电力系统自动化 2000年第6期24卷 54-56页

作者：陈建玉孟宪民张振旗王志华电力自动化研究院南京210003 珠海电力工业局珠海519000

介绍了中压电力系统中引起各种电流继电器误动的原因，分析了电流互感器饱和对电磁式电流继电器、晶体管或集成电路构成的模拟式电流继电器和微处理机构成的数字式电流继电器动作行为的影响。论述了几种防止和抗御电流互感器饱和的方法... 详细信息

介绍了中压电力系统中引起各种电流继电器误动的原因，分析了电流互感器饱和对电磁式电流继电器、晶体管或集成电路构成的模拟式电流继电器和微处理机构成的数字式电流继电器动作行为的影响。论述了几种防止和抗御电流互感器饱和的方法和对策，如在较高一级的电压等级中的供电测采取分列运行的方式以减少短路电流等。给出了选择合适的保护装置和在新建系统中选择电流互感器的一些原则。

关键词：继电保护电流互感器饱和问题

基于绝对磁场测量的磁通门磁强计在轨标定方法

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空间科学学报 2014年第2期34卷 235-241页

作者：张镇琦李磊周斌张艺腾中国科学院空间科学与应用研究中心北京100190 中国科学院大学北京100049

卫星在轨进行磁场测绘及监测时,需要高精度的磁场值,但由于磁通门磁强计三轴非正交性以及零点漂移所引起的误差大大降低了磁强计的测量精度,因而有必要对此进行校正.本文利用绝对标量磁强计,采用一种改进的最小二乘标定算法,通过不断迭... 详细信息

卫星在轨进行磁场测绘及监测时,需要高精度的磁场值,但由于磁通门磁强计三轴非正交性以及零点漂移所引起的误差大大降低了磁强计的测量精度,因而有必要对此进行校正.本文利用绝对标量磁强计,采用一种改进的最小二乘标定算法,通过不断迭代实现对磁通门三轴正交性和零点漂移的修正.结果表明,在考虑了磁强计本身噪声水平的实际情况下,磁通门磁强计的误差可由100 nT左右修正到0.2 nT以内.该算法为卫星在轨高精度磁场测量提供了一种可行的方法.

关键词：磁通门磁强计卫星在轨标定标定算法

LASER-SUPPORTED DETONATION WAVE AND IMPULSE PRODUCED BY 2.8-μm HF LASER PULSES ON SOLID SURFACES

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Science in China,Ser.A 1985年第10期28卷 1059-1066页

作者：周大正沙国河杨德政王振岐白吉玲张存浩 Dalian Institute of Chemical Physics Academia Sinica

Studies have been made on the plasma formation threshold, LSD wave propagation velocity and the impulse imparted to the target under various ambient conditions. All the experimental parameters can be approximately cor... 详细信息

关键词：口口 LASER-SUPPORTED DETONATION WAVE AND IMPULSE PRODUCED BY 2.8 m HF LASER PULSES ON SOLID SURFACES HF

基于三维Copula函数的永宁江流域洪潮遭遇分析

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武汉大学学报（工学版） 2020年第11期53卷 958-965页

作者：揭梦璇周芬张真奇浙江省水利水电勘测设计院浙江杭州310002

沿海平原洪涝灾害严重,致灾因子众多,需依据多变量水文频率分析成果进行防洪排涝规划设计。为解决沿海地区多变量遭遇问题,以永宁江流域为研究对象,采用三维非对称Gumbel-Hougaard Copula和Clayton Copula函数构建了暴雨、洪峰及潮位的... 详细信息

沿海平原洪涝灾害严重,致灾因子众多,需依据多变量水文频率分析成果进行防洪排涝规划设计。为解决沿海地区多变量遭遇问题,以永宁江流域为研究对象,采用三维非对称Gumbel-Hougaard Copula和Clayton Copula函数构建了暴雨、洪峰及潮位的三维联合分布模型,通过计算联合风险率、同现风险率、条件风险率及其重现期分析不同洪潮遭遇组合的风险,并提出了不同支流暴雨条件下的干流洪峰及潮位最可能组合方案。结果表明:三维Gumbel-Hougaard Copula函数计算的联合分布与经验分布拟合程度较高,能够明确计算出不同暴雨条件下的最可能洪峰和潮位组合,评估遭遇组合的风险,可为永宁江流域防洪排涝规划设计提供决策参考。

关键词：三维Copula函数联合分布风险率重现期条件最可能组合

Fault Diagnosis for Gear Pump Based on Feature Fusion of Vibration Signal

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Fault Diagnosis for Gear Pump Based on Feature Fusion of Vib...