期刊文献+
共找到9篇文章
< 1 >
每页显示 20 50 100
Dinitrophenyl-oxadiazole compounds:Design strategy,synthesis,and properties of a series of new melt-cast explosives
1
作者 Bao-long Kuang Ting-wei Wang +6 位作者 Cong Li Mou Sun Qamar-un-Nisa Tariq Chao Zhang Zhi-ming Xie Zu-jia Lu Jian-guo Zhang 《Defence Technology(防务技术)》 SCIE EI CAS CSCD 2024年第5期100-107,共8页
Melt-cast explosives are the most widely used energetic materials in military composite explosives,researchers have been unremittingly exploring high-energy and insensitive melt-cast explosives.In this work,a series o... Melt-cast explosives are the most widely used energetic materials in military composite explosives,researchers have been unremittingly exploring high-energy and insensitive melt-cast explosives.In this work,a series of dinitrophenyl-oxadiazole compounds were designed and prepared.These compounds have an ideal low melting point(80-97℃),good detonation performance(detonation velocity D=6455-6971 m/s,detonation pressure P=18-19 GPa)and extreme insensitive nature(impact sensitivity≥60 J,friction sensitivity>360 N).All these compounds were well characterized by nuclear magnetic resonance,fourier transform infrared spectroscopy,elemental analysis.Compounds 2,3 were unambiguously confirmed by X-ray single crystal diffraction analysis.As a result,their overall properties are superior to traditional melt-cast explosives trinitrotoluene(TNT)and dinitroanisole(DNAN)which may have excellent potential applications in insensitive melt-cast explosives. 展开更多
关键词 Dinitrophenyl-oxadiazole Melt-cast explosive low sensitivity
下载PDF
Microfluidic preparation of surfactant-free ultrafine DAAF with tunable particle size for insensitive initiator explosives
2
作者 Bo Yang Rui Li +9 位作者 Wei Cao Si-min He Jincan Zhu Qi Wu Heng Ding Jin Chen Weimiao Wang Zhiqiang Qiao Xiaodong Li Guangcheng Yang 《Defence Technology(防务技术)》 SCIE EI CAS CSCD 2024年第9期42-52,共11页
High purity and ultrafine DAAF(u-DAAF)is an emerging insensitive charge in initiators.Although there are many ways to obtain u-DAAF,developing a preparation method with stable operation,accurate control,good quality c... High purity and ultrafine DAAF(u-DAAF)is an emerging insensitive charge in initiators.Although there are many ways to obtain u-DAAF,developing a preparation method with stable operation,accurate control,good quality consistency,equipment miniaturization,and minimum manpower is an inevitable requirement to adapt to the current social technology development trend.Here reported is the microfluidic preparation of u-DAAF with tunable particle size by a passive swirling microreactor.Under the guidance of recrystallization growth kinetics and mixing behavior of fluids in the swirling microreactor,the key parameters(liquid flow rate,explosive concentration and crystallization temperature)were screened and optimized through screening experiments.Under the condition that no surfactant is added and only experimental parameters are controlled,the particle size of recrystallized DAAF can be adjusted from 98 nm to 785 nm,and the corresponding specific surface area is 8.45 m^(2)·g^(-1)to 1.33 m^(2)·g^(-1).In addition,the preparation method has good batch stability,high yield(90.8%-92.6%)and high purity(99.0%-99.4%),indicating a high practical application potential.Electric explosion derived flyer initiation tests demonstrate that the u-DAAF shows an initiation sensitivity much lower than that of the raw DAAF,and comparable to that of the refined DAAF by conventional spraying crystallization method.This study provides an efficient method to fabricate u-DAAF with narrow particle size distribution and high reproducibility as well as a theoretical reference for fabrication of other ultrafine explosives. 展开更多
关键词 Microfluidic preparation Screening crystallization conditions Narrow particle size distribution low initiation sensitivity Ultrafine DAAF
下载PDF
Estimation of enhanced low dose rate sensitivity mechanisms using temperature switching irradiation on gate-controlled lateral PNP transistor 被引量:1
3
作者 Xiao-Long Li Wu Lu +7 位作者 Xin Wang Xin Yu Qi Guo Jing Sun Mo-Han Liu Shuai Yao Xin-Yu Wei Cheng-Fa He 《Chinese Physics B》 SCIE EI CAS CSCD 2018年第3期342-350,共9页
The mechanisms occurring when the switched temperature technique is applied,as an accelerated enhanced low dose rate sensitivity(ELDRS)test technique,are investigated in terms of a specially designed gate-controlled l... The mechanisms occurring when the switched temperature technique is applied,as an accelerated enhanced low dose rate sensitivity(ELDRS)test technique,are investigated in terms of a specially designed gate-controlled lateral PNP transistor(GLPNP)that used to extract the interface traps(Nit)and oxide trapped charges(Not).Electrical characteristics in GLPNP transistors induced by ^(60)Co gamma irradiation are measured in situ as a function of total dose,showing that generation of Nit in the oxide is the primary cause of base current variations for the GLPNP.Based on the analysis of the variations of Nit and Not,with switching the temperature,the properties of accelerated protons release and suppressed protons loss play critical roles in determining the increased Nit formation leading to the base current degradation with dose accumulation.Simultaneously the hydrogen cracking mechanisms responsible for additional protons release are related to the neutralization of Not extending enhanced Nit buildup.In this study the switched temperature irradiation has been employed to conservatively estimate the ELDRS of GLPNP,which provides us with a new insight into the test technique for ELDRS. 展开更多
关键词 ionizing radiation damage enhanced low dose rate sensitivity(ELDRS) switched temperature irradiation gate-controlled lateral PNP transistor(GLPNP)
下载PDF
Constructing energetic covalent organic frameworks with high stability and low sensitivity
4
作者 Hui-Min Guo Xiao-Yu Dong +2 位作者 Shan Wang Qian-You Wang Shuang-Quan Zang 《Chinese Chemical Letters》 SCIE CAS CSCD 2024年第3期544-548,共5页
Developing new functional explosives that display high stability,good energy performance,and low sensitivity are one of the key directions of energetic materials research.In this work,two-dimensional(2D)Schiff-based e... Developing new functional explosives that display high stability,good energy performance,and low sensitivity are one of the key directions of energetic materials research.In this work,two-dimensional(2D)Schiff-based energetic covalent organic frameworks(COFs)are prepared based on triaminoguanidine salts with different anions as building blocks.Benefiting from the robust covalent bond in 2D extended polygons and strongπ-πinteractions in the eclipsed interlayers,the synthesized energetic COFs showed higher thermal stability and lower mechanical sensitivity than their precursor salts.More importantly,incorporating triaminoguanidine salts into COFs effectively increase the corrosion resistance to metal under high humidity conditions,which is due to the imine moieties in COFs functioning asπacceptors and offering strong bonding with metallic ions.This work provides a new pathway for the development of high-performance energetic materials. 展开更多
关键词 Covalent organic frameworks Energetic materials High thermal stability low sensitivity Corrosion resistance
原文传递
Effect of ionizing radiation on dual 8-bit analog-to-digital converters (AD9058) with various dose rates and bias conditions 被引量:1
5
作者 李兴冀 刘超铭 +2 位作者 孙中亮 肖立伊 何世禹 《Chinese Physics B》 SCIE EI CAS CSCD 2013年第9期629-633,共5页
The radiation effects on several properties (reference voltage, digital output logic voltage, and supply current) of dual 8-bit analog-to-digital (A/D) converters (AD9058) under various biased conditions are inv... The radiation effects on several properties (reference voltage, digital output logic voltage, and supply current) of dual 8-bit analog-to-digital (A/D) converters (AD9058) under various biased conditions are investigated in this paper. Gamma ray and 10-MeV proton irradiation are selected for a detailed evaluation and comparison. Based on the measurement results induced by the gamma ray with various dose rates, the devices exhibit enhanced low dose rate sensitivity (ELDRS) under zero and working bias conditions. Meanwhile, it is obvious that the ELDRS is more severe under the working bias condition than under the zero bias condition. The degradation of AD9058 does not display obvious ELDRS during 10-MeV proton irradiation with the selected flux. 展开更多
关键词 analog-to-digital converters enhanced low dose rate sensitivities (ELDRS) gamma ray and protonirradiation lower/high-dose rate
下载PDF
Metal-organic framework templated synthesis of copper azide as the primary explosive with low electrostatic sensitivity and excellent initiation ability
6
作者 WANGShu Rong CAI QinJie +3 位作者 ZHANG Fan CHEN JunHao ZHAO Yuan ZHU LingJun 《Science Foundation in China》 CAS 2017年第1期31-31,共1页
Subject Code:F05With the support by the State Key Laboratory of Explosion Science and Technology,the research team led by Prof.Yang Li(杨利)and Prof.Wang Bo(王博)of Beijing Institute of Technology,applied MOFderived p... Subject Code:F05With the support by the State Key Laboratory of Explosion Science and Technology,the research team led by Prof.Yang Li(杨利)and Prof.Wang Bo(王博)of Beijing Institute of Technology,applied MOFderived porous carbon materials with well-distributed metal source in the in-situ synthesis of primary explosive(MOFT-CA),which was published in Advanced Materials(2016,28:5837—5843). 展开更多
关键词 Metal-organic framework templated synthesis of copper azide as the primary explosive with low electrostatic sensitivity and excellent initiation ability
原文传递
The insensitive mechanism of poultry to zearalenone:A review 被引量:9
7
作者 Kuntan Wu Chenxi Ren +4 位作者 Yangfan Gong Xin Gao Shahid Ali Rajput Desheng Qi Shuai Wang 《Animal Nutrition》 SCIE CSCD 2021年第3期587-594,共8页
Zearalenone(ZEN)is one of the most common contaminating mycotoxins and is mainly produced by Fusarium graminearum.ZEN and its metabolites can interfere with estrogen function and affect animals'reproductive abilit... Zearalenone(ZEN)is one of the most common contaminating mycotoxins and is mainly produced by Fusarium graminearum.ZEN and its metabolites can interfere with estrogen function and affect animals'reproductive ability.Pigs are most susceptible to ZEN,and ZEN is less harmful to poultry than to pigs.The exact mechanism for the difference in susceptibility remains unclear.In this review,we summarized some possible reasons for the relative insensitivity of poultry to ZEN,such as the lower total amount ofα-zearalenol(α-ZOL)and theα-ZOL-to-β-ZOL ratio which reduce the toxicity of ZEN to poultry.The faster hepatic and enteric circulation,and excretion capacity in poultry can excrete more ZEN and its metab-olites.There are other possible factors such as the transformation of intestinal microorganisms,differ-ences in hydroxysteroid dehydrogenases'activity,high estrogen levels,and low estrogen receptors affinity which can also cause poultry to be relatively insensitive to ZEN.In this review,we summarized the hazards,pollution status,metabolic pathways,and some measures to mitigate ZEN's harmfulness.Specifically,we discussed the possible mechanisms of low reproductive toxicity by ZEN in poultry. 展开更多
关键词 ZEARALENONE POULTRY low sensitivity METABOLISM DETOXIFICATION
原文传递
6T SRAM cell analysis for DRV and read stability
8
作者 Ruchi S.Dasgupta 《Journal of Semiconductors》 EI CAS CSCD 2017年第2期73-79,共7页
The present paper analyzes the hold and read stability with temperature and aspect ratio variations. To reduce the power dissipation, one of the effective techniques is the supply voltage reduction. At this reduced su... The present paper analyzes the hold and read stability with temperature and aspect ratio variations. To reduce the power dissipation, one of the effective techniques is the supply voltage reduction. At this reduced supply voltage the data must be stable. So, the minimum voltage should be discovered which can also retain the data. This voltage is the data retention voltage(DRV). The DRV for 6T SRAM cell is estimated and analyzed in this paper.The sensitivity analysis is performed for the DRV variation with the variation in the temperature and aspect ratio of the pull up and pull down transistors. Cadence Virtuoso is used for DRV analysis using 45 nm GPDK technology files. After this, the read stability analysis of 6T SRAM cell in terms of SRRV(supply read retention voltage) and WRRV(wordline read retention voltage) is carried out. Read stability in terms of RSNM can be discovered by accessing the internal storage nodes. But in the case of dense SRAM arrays instead of using internal storage nodes,the stability can be discovered by using direct bit line measurements with the help of SRRV and WRRV. SRRV is used to find the minimum supply voltage for which data can be retained during a read operation. Similarly, WRRV is used to find the boosted value of wordline voltage, for which data can be retained during read operation. The SRRV and WRRV values are then analyzed for different Cell Ratios. The results of SRRV and WRRV are then compared with the reported data for the validation of the accuracy of the results. 展开更多
关键词 DRV SRRV WRRV data retention leakage reduction low power SRAM sensitivity analysis
原文传递
Fifty Years of Water Sensitive Urban Design, Salisbury, South Australia
9
作者 John C. Radcliffe Declan Page +1 位作者 Bruce Naumann Peter Dillon 《Frontiers of Environmental Science & Engineering》 SCIE EI CAS CSCD 2017年第4期63-72,共10页
Australia has developed extensive policies and guidelines for the management of its water. The City of Salisbury, located within metropolitan Adelaide, South Australia, developed rapidly through urbanisation from the ... Australia has developed extensive policies and guidelines for the management of its water. The City of Salisbury, located within metropolitan Adelaide, South Australia, developed rapidly through urbanisation from the 1970s. Water sensitive urban design principles were adopted to maximise the use of the increased rim-off generated by urbanisation and ameliorate flood risk. Managed aquifer recharge was introduced for storing remediated low-salinity stormwater by aquifer storage and recovery (ASR) in a brackish aquiter for subsequent lrngatlon. Ibis paper outlines now a municipal government has progressively adopted principles of Water Sensitive Urban Design during its development within a framework of evolving national water policies. Salisbury's success with stormwater harvesting led to the formation of a pioneering w aterbusiness that includes linking projects from nine sites to provide a non-potable supply of 5 ×10^6 m^3 year. These installations hosted a number of applied research projects addressing well configuration, water quality, reliability and economics and facilitated the evaluation of its system as a potential potable water source. The evaluation showed that while untreated stonnwater contained contaminants, subsurface storage and end-use controls were sufficient to make recovered water sale for public open space irrigation, and with chlorination acceptable lbr third pipe supplies. Drinking water quality could be achieved by adding microfiltration, disinfection with UV and chlorination. The costs that would need to be expended to achieve drinking water safety standards were found to be considerably less than the cost of establishing dual pipe distribution systems. The full cost of supply was determined to be AUD$1.57 m " for non-potable water for pubhc open space lrngatlon much cheaper than mares water, AUD $3.45 m at that time. Producing and storing potable water was found to cost AUDS1.96 to $2.24 m . 展开更多
关键词 Managed Aquifer Recharge (MAR) Stormwater harvesting Water recycling drinking water low impact development Water sensitive urban design
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部