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Revealing the correlation between adsorption energy and activation energy to predict the catalytic activity of metal oxides for HMX using DFT

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Defence Technology（防务技术） 2024年第1期31卷 262-270页

作者： Xiurong Yang Chi Zhang Wujing Jin Zhaoqi Guo hongxu gao Shiyao Niu Fengqi Zhao Bo Liu Haixia Ma Xi'an Key Laboratory of Special Energy Materials School of Chemical EngineeringNorthwest UniversityXi'an710069China Science and Technology on Combustion and Explosion Laboratory Xi'an Modern Chemistry Research InstituteXi'an710065China Rocket Force University of Engineering Xi'an 710025China

Traditional selection of combustion catalysis is time-consuming and *** calculation is expected to resolve this *** adsorption energy of HMX and O atoms on 13 metal oxides was calculated using DMol3,since HMX and O are key substances in decomposition *** the relationship between the adsorption energy of HMX,O on metal oxides(TiO_(2),Al_(2)O_(3),PbO,CuO,Fe_(2)O_(3),Co_(3)O_(4),Bi_(2)O_(3),NiO)and experimental T30 values(time required for the decomposition depth of HMX to reach 30%)was depicted as volcano ***,the T30 values of other metal oxides was predicted based on their adsorption energy on volcano plot and validated by previous experimental ***,the adsorption energy of HMX on ZrO_(2)and MnO_(2)was predicted based on the linear relationship between surface energy and adsorption energy,and T30 values were estimated based on volcano *** apparent activation energy data of HMX/MgO,HMX/SnO_(2),HMX/ZrO_(2),and HMX/MnO_(2)obtained from DSC experiments are basically consistent with our predicted T30 values,indicating that it is feasible to predict the catalytic activity based on the adsorption calculation,and it is expected that these simple structural properties can predict adsorption energy to reduce the large quantities of computation and experiment cost.

关键词： Density functional theory HMX Metal oxides Adsorption energy Activation energy

New insights in nano-copper chromite catalyzing ultrafine AP:Evaluation of dispersity and mixing uniformity

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Defence Technology（防务技术） 2024年第2期32卷 120-133页

作者： Yong Kou Peng Luo Lei Xiao Yanping Xin Guangpu Zhang Yubing Hu Junqing Yang hongxu gao Fengqi Zhao Wei Jiang Gazi Hao National Special Superfine Powder Engineering Research Center of China School of Chemistry and Chemical EngineeringNanjing University of Science and TechnologyNanjing210094China Xi'an North Huian Chemical Industry Co.Ltd Xi'an710302China Xi'an Modern Chemistry Research Institute Xi'an710065China

Improving the application of nanomaterials has always been a research hotspot in the field of energetic materials(EMs)due to their obvious catalytic effect on the EMs,especially the uniformly dispersed ***,few studies have reported the dispersion of *** this study,the dispersity and mixing uniformity of nano-CuCr_(2)O_(4)was evaluated based on the difference of solid UV light absorption between the nano-catalytic materials and *** nano-CuCr_(2)O_(4)/ultrafine AP composites with different dispersity of nano-CuCr_(2)O_(4)were prepared by manual grinding and mechanical grinding with different grinding strength and griding *** then,the absorbance of different samples at 212 nm was obtained by solid UV testing due to the high repeatability of the absorbance at 210-214 nm for three parallel experiments,and the dispersity of different samples was calculated through the established difference ***,the samples were characterized by XRD,IR,SEM,EDS,DSC and TG-MS,which confirmed that different mixing methods did not change the structure of the samples(XRD and IR),and the mixing uniformity improved with the increase of grinding strength and grinding time(SEM and EDS).The scientificity and feasibility of the difference equation were further verified by *** dispersity of nano-CuCr_(2)O_(4)exhibits a positive intrinsic relationship with its catalytic performance,and the uniformly dispersed nano-CuCr_(2)O_(4)significantly reduces the thermal decomposition temperature of ultrafine AP from 367.7 to 338.8℃.The TG-MS patterns show that the dispersed nano-CuCr_(2)O_(4)advanced the thermal decomposition process of ultrafine AP by about 700 s,especially in the high temperature decomposition stage,and the more concentrated energy release characteristic is beneficial to further enhance the energy performance of AP-based *** above conclusions show that the evaluation method of dispersity based on solid UV curves could pro

关键词： Nano-CuCr_(2)O_(4) Ultrafine AP Dispersity UVeVis diffuse reflectance spectroscopy Thermal decomposition

Cysteine dioxygenase and taurine are essential for embryo implantation by involving in E2-ERαand P_(4)-PR signaling in mouse

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Journal of Animal Science and Biotechnology 2023年第3期14卷 1040-1053页

作者： Di Zhang Zhijuan Wang Xuan Luo Hongzhou Guo Guobin Qiu Yuneng Gong hongxu gao Sheng Cui College of Veterinary Medicine Yangzhou UniversityYangzhouJiangsu 225009People’s Republic of China Jiangsu Co‑Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses Yangzhou UniversityYangzhou 225009People’s Republic of China State Key Laboratory of Agrobiotechnology College of Biological SciencesChina Agricultural University100193 BeijingPeople’s Republic of China Institute of Reproduction and Metabolism Yangzhou University225009 JiangsuPeople’s Republic of China

Background Taurine performs multiple physiological functions,and the maintenance of taurine level for most mammals relies on active uptake from diet and endogenous taurine synthesis through its synthesis enzymes,including cysteine dioxygenase(CDO).In addition,uterus tissue and uterus fluid are rich in to urine,and to urine synthesis is regulated by estrogen(E2)and progesterone(P_(4)),the key hormones priming embryo-uterine crosstalk during embryo implantation,but the functional interactions and mechanisms among which are largely *** present study was thus proposed to identify the effects of CDO and taurine on embryo implantation and related mechanisms by using Cdo knockout(KO)and ovariectomy(OVX)mouse *** The uterine CDO expression was assayed from the first day of plugging(d 1)to d 8 and the results showed that CDO expression level increased from d 1 to d 4,followed by a significant decline on d 5 and persisted to d 8,which was highly correlated with serum and uterine taurine levels,and serum P_(4) ***,Cdo KO mouse was established by CRISPER/*** was showed that Cdo deletion sharply decreased the taurine levels both in serum and uterus tissue,causing implantation defects and severe ***,the implantation defects in Cdo KO mice were partly rescued by the taurine *** addition,Cdo deletion led to a sharp decrease in the expressions of P_(4)receptor(PR)and its responsive genes Ihh,Hoxa10 and *** the expression of uterine estrogen receptor(ERa)had no significant change,the levels of ERa induced genes(Muc1,Ltf)during the implantation window were upregulated after Cdo *** accompanied by the suppression of stroma cell ***,E2inhibited CDO expression through ERa and P_(4)upregulated CDO expression through *** The present study firstly demonstrates that taurine and CDO play prominent roles in uterine receptivity and embryo implantation by involving in E2-ERa

关键词： CDO E2 Embryo implantation P_(4) Taurine

Progress on the application of graphene-based composites toward energetic materials: A review

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Revealing the correlation between adsorption energy and activation energy to predict the catalytic activity of metal oxides for HMX using DFT

Defence technology 2024年第1期

作者： Ting Zhang Xiaoming gao Jiachen Li Libai Xiao hongxu gao Fengqi Zhao Haixia Ma

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New insights in nano-copper chromite catalyzing ultrafi ne AP: Evaluation of dispersity and mixing uniformity

Defence technology 2024年第1期

作者： Xiurong Yang Chi Zhang Wujing Jin Zhaoqi Guo hongxu gao Shiyao Niu Fengqi Zhao Bo Liu Haixia Ma

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基于分组序列码本和压缩感知的大规模无源多址方案

Defence technology 2024年第2期

作者： Yong Kou Peng Luo Lei Xiao Yanping Xin Guangpu Zhang Yubing Hu Junqing Yang hongxu gao Fengqi Zhao Wei Jiang Gazi Hao

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通信学报 2023年第12期44卷 171-180页

作者：张晶马林梁楚龙高宏旭南京邮电大学通信与信息工程学院江苏南京210003 江苏省无线通信重点实验室江苏南京210003 中兴通讯股份有限公司广东深圳518055 中邮建技术有限公司江苏南京210012

针对大规模机器类型通信零星突发场景,提出了一种基于分组序列码本和压缩感知的大规模无源多址方案。首先,设计了基于特定移位模式的大容量扩展码本生成方案,以扩展码本空间;然后,将上行信号的稀疏结构与多载波技术结合,支持多用户数据... 详细信息

针对大规模机器类型通信零星突发场景,提出了一种基于分组序列码本和压缩感知的大规模无源多址方案。首先,设计了基于特定移位模式的大容量扩展码本生成方案,以扩展码本空间;然后,将上行信号的稀疏结构与多载波技术结合,支持多用户数据在部分子载波上重叠传输,以提高频谱效率;最后,建立了多载波CS-MUD模型,设计了基于码本序列块的组正交匹配追踪算法完成活动用户及其上行数据的联合检测。仿真结果表明,所提方案能够有效降低大规模随机接入的误码率。

关键词：大规模机器类型通信压缩感知无源多址扩展码本

Thermochemical properties and thermokinetic behavior of energetic triazole ionic salts

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Science China Chemistry 2011年第3期54卷 461-474页

作者： ZHAO FengQi XUE Liang XING XiaoLing HU RongZu ZHOU ZhiMing gao hongxu YI JianHua XU SiYu PEI Qing National Key Lab of Science and Technology on Combustion and Explosion Xi'an Modern Chemistry Research Institute Xi'an 710065 China School of Chemistry and Materials Science Shaanxi Normal University Xi'an 710062. China School of Chemical Engineering and Environment Beijing Institute of Technology Beijing 100081 China

The properties of dissolution in different solvents,the specific heat capacity and thermal decomposition process under the non-isothermal conditions for energetic triazole ionic salts 1,2,4-triazolium nitrate(1a),1,2,3-triazolium nitrate(1b),3,4,5triamino-1,2,4-triazolium nitrate(2a),3,4,5-triamino-1,2,4-triazolium dinitramide(2b)were precisely measured using a Calvet *** thermochemical equation,differential enthalpies of dissolution(△difH m ),standard molar enthalpies of dissolution(△difH m ),apparent activation energy(E),pre-exponential constant(A),kinetic equation,linear relationship of specific heat capacity with temperature over the temperature range from 283 to 353 K,standard molar heat capacity(C p,m)and enthalpy,entropy and Gibbs free energy at 283–353 K,taking 298.15 K as the benchmark for 1a,1b,2a and 2b were obtained with treating experimental data and theoretical calculation *** kinetic and thermodynamic parameters of thermal decomposition reaction,critical temperature of thermal explosion(Tb),self-accelerating decomposition temperature(TSADT)and adiabatic time-to-explosion(t)of 1a,1b,2a and 2b were *** heat-resistance abilities were *** was obtained on the relation between molecular structures and properties of 1a,1b,2a and 2b.

关键词：硝酸盐热性能动力学行为三唑高能离子热分解反应动力学理论计算方法摩尔溶解焓

Application Strategy of Management Accounting in Financial Management of Colleges and Universities

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Journal of Contemporary Educational Research 2019年第6期3卷 7-10页

作者： hongxu gao Audit Office of Southwest Minzu University ChengduSichuan610225China

In recent years,application of management accounting has been gaining a lot of *** positive role of management accounting in financial management has also been widely *** the official implementation of new government accounting system,environment and situation for financial management in colleges and universities are different from that in the *** addition to adjustment according to relevant requirements,financial management of colleges and universities are also required to carry out trial application of management *** analysis of application of management accounting in financial management of some colleges and universities,it can be found that application of management accounting is not being carried out well and is restricted by many difficult *** paper will analyze the difficulties of application of management accounting in financial management of colleges and universities,and put forward suitable suggestions for better application of management accounting.

关键词： Management accounting Colleges and universities Financial management