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flash

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新电脑 2001年第1期 118-121页

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flash

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数字生活 2003年第12期 4-83页

现今电影流行野蛮,动画流行流氓,看似憨态可鞠的企鹅实际上一肚子坏水,用他天使般的脸孔骗走无数人对他的喜爱。流氓兔的火爆令人瞠目,如今又有流氓企鹅闪亮登场。不过他并非我们熟知的QQ企鹅。

关键词： flash

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flash

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英语大王 2004年第8期 36-37页

"闪客"用flash能创作出既漂亮又有各种奇特效果的动画、MTV。真酷!如果《英语大王》的读者们也把自己创作的flash发表在配刊光盘上,那该多好啊!记得联系我噢!

关键词： flash

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flash

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现代教学 2002年第3期 64-64页

作者：小号德芙

站点flash虚拟主题社区http://***闪派——flashParty。前身为福特小派(***),包括闪派派对,闪派论坛,闪派影院,闪派学院,闪派超市。注册之后可以通过参加派对,发表文章等方式增加“金钱”和“经验值”。

关键词： www flash

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flash-assisted doping graphene for ultrafast potassium transport

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Nano Research 2022年第5期15卷 4083-4090页

作者： Yongzhi Zhang Xianjue Chen Wanglai Cen Wenhao Ren Haocheng Guo Sicheng Wu Yang Xiao Sheng Chen Yong Guo Dan Xiao Chuan Zhao Institute of New Energy and Low-Carbon Technology(INELT) Sichuan UniversityChengdu 610065China School of Chemistry University of New South WalesSydney 2052Australia College of Chemistry Sichuan UniversityChengdu 610064China

Graphene has been widely used for electrical energy storage and its performances could be further improved by heteroatom *** to prepare doped graphene efficiently and economically remains a significant ***,we propose a flash-assisted doping method to produce nitrogen-and sulfur-doped graphene(N-rGO and S-rGO).Using this method,graphene oxide(GO)is reduced to few-layer graphene(rGO)in seconds without the use of reductants,accompanied with a high doping ***,the as-synthesized N-rGO with a high N content of 12.75 at.%used as potassium-ion battery(KIB)anode exhibits ultrafast K+-transport kinetics and superior K^(+)-storage *** kinetics analysis and theoretical simulation are used to reveal the mechanism of transportation and storage of K^(+)in N-rGO.

关键词： graphene doping flash anodes potassium-ionbatteries

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flash X-ray radiography technique to study the high velocity impact of soft projectile on E-glass/epoxy composite material

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Defence Technology（防务技术） 2019年第2期15卷 216-226页

作者： B.Venkata Ramudu C.Jayarami Reddy V.Madhu Armour Design and Development Division Defence Metallurgical Research Laboratory

In the present paper, the high velocity impact of 9 mm soft lead projectile on 10 mm and 30 mm thick Eglass/epoxy composites was studied using a 450 kV flash X-ray radiography(FXR) system. The basic parameters of FXR imaging, such as effect of ratio of target to film(TF) and source to target(ST) distances and X-ray penetration thickness of the composite material were optimized based on clarity and the actual dimensions of the objects. The optimized parameters were used in the FXR imaging of the ballistic event of 9 mm soft projectile on E-glass/epoxy composite. The real time deformation patterns of both the projectile and composite target during the ballistic impact were captured and studied at different time intervals. The notable failure modes of the 10 mm thick target with time include fibre breakage, bulging on the back side, delamination, recovery of the bulging, reverse bulging and its recovery. However, with increase in thickness of the target to 30 mm the only failure mechanism observed is the breaking of fibres. The ballistic impact event was also numerically simulated using commercially available LS-DYNA software. The numerically simulated deformation patterns of the projectile and target at different time intervals are closely matching with the corresponding radiographic images.

关键词： flash X-ray radiography E-Glass/epoxy composite Ballistic impact Numerical simulation

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flash X-ray cinematography analysis of dwell and penetration of smallcaliber projectiles with three types of SiC ceramics

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Defence Technology（防务技术） 2016年第3期12卷 277-283页

作者： Elmar STRASSBURGER Steffen BAUER Steffen WEBER Heiner GEDON Fraunhofer Institute for High-Speed Dynamics Ernst-Mach-Institute(EMI)Am Christianswuhr 279400 KandernGermany DLR–German Aerospace Center Institute of Structures and DesignPfaffenwaldring 38-4070569 StuttgartGermany WIWeB–Bundeswehr Research Institute for Materials Fuels and LubricantsInstitutsweg 185435 ErdingGermany

In order to improve the performance of ceramic composite armor it is essential to know the mechanisms during each phase of the projectile–target interaction and their influence on the penetration *** the view on the crater zone and the tip of a projectile penetrating a ceramic is rapidly getting obscured by damaged material,a flash X-ray technique has to be applied in order to visualize projectile *** this purpose,usually several flash X-ray tubes are arranged around the target and the radiographs are recorded on *** EMI a flash X-ray imaging method has been developed,which provides up to eight flash radiographs in one experiment.A multi-anode 450 k V flash X-ray tube is utilized with this *** radiation transmitted through the target is then detected on a fluorescent *** fluorescent screen converts the radiograph into an image in the visible wavelength range,which is photographed by means of a high-speed *** technique has been applied to visualize and analyze the penetration of 7.62 mm AP projectiles into three different types of Si C *** commercial Si C grades and MICASIC(Metal Infiltrated Carbon derived Si C),a C-Si Si C ceramic developed by DLR,have been *** influences,not only of the ceramic but also the backing material,on dwell time and projectile erosion have been *** curves have been determined and their relevance to the ballistic resistance is discussed.

关键词： Ballistic resistance Dwell flash X-ray cinematography SiC ceramics

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Radiation model of a xenon flash lamp in a laser amplifier pump cavity

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High Power Laser Science and Engineering 2015年第4期3卷 31-37页

作者： Yongzhong Wu Jianqiang Zhu Zhixiang Zhang Yangshuai Li National Laboratory on High Power Laser and Physics Shanghai Institute of Optics and Fine MechanicsChinese Academy of Sciences University of Chinese Academy of Sciences

Understanding the radiation model of a flash lamp is essential for the reflector design of a laser amplifier. Reflector design often involves several simplifying assumptions, like a point or Lambertian source; either of these assumptions may lead to significant errors in the output distribution. In practice, source non-idealities usually result in sacrificing the amplifier's gain coefficient. We propose a novel test technique for attaining the xenon flash lamp absolute spectral intensity at various angles of view, and then accurately predict radiation distributions and generate the reflector shape. It is shown that due to the absorption of emitted radiation by the lamp itself, the behavior of the radiation model at various wavelengths is different. Numerical results of xenon plasma absorption coefficient were compared with the measured data. A reasonable agreement was obtained for the absorption coefficient parameters. Thus, this work provides a useful analytical tool for the engineering design of laser amplifier reflectors using xenon flash lamps as pumps.

关键词： absorption coefficient current density radiation model xenon flash lamp xenon plasma

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flash sintering incubation kinetics

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npj Computational Materials 2020年第1期6卷 850-857页

作者： K.S.N.Vikrant Han Wang Aniruddha Jana Haiyan Wang R.Edwin García School of Materials Engineering Purdue UniversityWest LafayetteIN 47907USA School of Electrical and Computer Engineering Purdue UniversityWest LafayetteIN 47907USA

The microstructural mechanisms leading to onset of the flash sintering are demonstrated experimentally and theoretically for Yttria Stabilized Zirconia,*** regimes leading to flash event are identified:(1)Radiation-dominated regime,where the oven controls the heating of the sintered sample,and a small subset of particle-particle contacts and surfaces of the green body define percolative paths for the charge to flow along and across the interfaces;(2)Transition regime,where charge transport is suppressed across particle contact misorientations and deflects to surficial and small angle particle contact *** a result,internal Joule heating takes over externally-driven radiation ***,(3)Percolative regime,where the concentration of oxygen vacancies drastically increases at particle contacts,surfaces,and triple junctions,and enables charge to flow through multiple paths,generating large amounts of Joule heating,resulting in the onset of a flash *** validated theory sets the stage to rationalize the microstructural evolution and charge transport on a ceramic green body during flash sintering.

关键词： flash flash regime

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Observation of an upward lightning flash with 21 upward positive leaders initiated from different wind turbines in wind farm

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High Voltage 2024年第1期9卷 163-171页

作者： Li Cai Yifeng Ke Wenchao Fan Ruisheng Yan Mi Zhou Jianguo Wang Yadong Fan Engineering Research Center of Ministry of Education for Lightning Protection and Grounding Technology School of Electrical Engineering and AutomationWuhan UniversityWuhanChina

As the wind turbine height increases,the probability of multiple upward leaders flashes within the wind farm *** this study,an upward lightning flash containing 21 upward positive leaders(UPLs)initiated from different wind turbines in Zhangbei Wind Farm was *** average speed of the UPLs was 1.2×10^(5) m/s,which mostly decreased to zero before reaching the cloud *** four UPLs developed to cloud height,with prolonged periods of bright light on three of them and with a minimum duration of 126 ms.A total of nine return strokes occurred on the other two dissipated leader channels,and the numbers of strokes on the two channels was six and three,*** average interstroke interval for the return strokes was 10.5 *** of these nine return strokes had peak currents smaller than 10 *** high-speed video frames confirmed that competition does exist between the UPLs,and the range of shielding effects increases as the height of the ULs *** effect of fan rotation on the initiation of upward leaders and the shielding effect between the wind turbines and upward leaders are discussed.

关键词： flash return initiated

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