中国科学院机构知识库网格系统: 检索

Operating range of magnetic stabilization flow regime for magnetized fluidized bed with Geldart-B magnetizable and nonmagnetizable particles 期刊论文 OAI收割
PARTICUOLOGY, 2022, 卷号: 60, 页码: 90-98
作者: Hao, Weikang; Zhu, Quanhong

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收藏 | 浏览/下载：28/0 | 提交时间：2022/06/15

Magnetized fluidized bed Binary mixture Magnetic stabilization Operating range Nonmagnetizable particles Magnetization-FIRST

SrCexNb(x)WO(4+4x): A novel NTC ceramic for high-temperature thermistor with a wide temperature range 期刊论文 OAI收割
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2021, 卷号: 41, 期号: 14, 页码: 7062-7068
作者: Li, XH (Li, Xiaohui) 1 , 2; Chen, XY (Chen, Xiaoyi) 1 , 2; Gao, B (Gao, Bo) 1; Fan, YW (Fan, Yanwei) 1; Wang, YG (Wang, Yige) 1

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收藏 | 浏览/下载：43/0 | 提交时间：2021/09/22

NTC thermistorsHigh-temperature applicationElectrical propertiesSrCexNb(x)WO(4+4x) ceramicsWide operating temperature range

Analysis of the Infrared Detection System Operating Range Based on Polarization Degree 会议论文 OAI收割
Nanjing, PEOPLES R CHINA, 2017-10-24
作者: Jiang Kai; Liu Wen; Liu Kai; Duan Jing; Yan Pei-pei

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收藏 | 浏览/下载：18/0 | 提交时间：2018/07/05

Infrared System Polarization Detection Polarization Degree Snr Operating Range

Progress in bulk MgCu2-type rare-earth iron magnetostrictive compounds 期刊论文 OAI收割
Chinese Physics B, 2013, 卷号: 22, 期号: 7
W. J. Ren; Z. D. Zhang

收藏 | 浏览/下载：21/0 | 提交时间：2013/12/24

magnetostriction anisotropy Laves compound operating temperature-range laves phase compounds free single-crystals magnetic-properties anisotropy compensation terfenol-d giant magnetostriction tb0.3dy0.7fe2 alloy aluminum compounds oriented crystals

Research on energy characteristics of aerospace relay mirror system (EI CONFERENCE) 会议论文 OAI收割
2011 International Conference on Electronic and Mechanical Engineering and Information Technology, EMEIT 2011, August 12, 2011 - August 14, 2011, Harbin, China
Liu C.; Zhong X.; Piao Y.; Jin G.

收藏 | 浏览/下载：27/0 | 提交时间：2013/03/25

Aerospace Relay Mirror System (ARMS) as a new concept weapon used in reflection of High Energy Laser (HEL) in space is studied. It extends the attacking range of Ground Based Laser (GBL) weapons enormously. Relevant researches have been carried out for many years. The structures and operating theory of the entire system consists of ground-based high energy laser weapon and space-based relay mirror. The main work of this study is focused on the analysis of relay mirror energy characteristics to deduce the relationship among the attacking range of weapon and diameter of ARMS and target irradiance. Calculation examples are also given. The results proved the strong points and feasibility of ARMS theoretically further. It is summarized that more importance should be attached to ARMS development. The results given in this paper can be reference of an actual ARMS system to some extends. 2011 IEEE.

Evaluation of the operating range for ground-based infrared imaging tracking system (EI CONFERENCE) 会议论文 OAI收割
International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Infrared Imaging and Applications, May 24, 2011 - May 24, 2011, Beijing, China
作者: Zhang Z.-D.

收藏 | 浏览/下载：47/0 | 提交时间：2013/03/25

Ground-based infrared imaging tracking system (GIITS) is of great importance for aerial target warning and guard. The operating range is one of the key performance specifications on the other which should be calculated calculate the radiation power received on the detector in order to analysis whether the output signal meets the detection requirements or not analyzed and studied during the whole GIITS design process. The operating range is mostly influenced by a few factors without considering the effect of the background radiation. By improving of the traditional method including atmospheric attenuation a new operating range calculation model of the GIITS was established based on two requirements. One is that the image size of observed target should meet the requirement of the processor signal extraction. The number of the pixel occupied by target image should be more than 9. The other is that the signal noise ratio (SNR) of the GIITS should not be less than 5 to meet the requirements of the target detection probability and spatial frequency. The SNR calculation equation in form of energy is deduced and the radiation characteristic of the observed target and background are analyzed. When evaluate the operating range of the GIITS using the new method the performance of GIITS and feature of target and background. This paper firstly makes analysis and summarization on the definite localizations of the traditional operating range equation of the GIITS. The localizations are mainly in two aspects. On one hand we should successively calculate two operating range values according to two requirements mentioned above and choose the minimum value as the analytic result. In the end the dispersion of the image and the effect of image dispersion are not considered in the traditional method an evaluation of operating range for fighter aircraft is accomplished as an example. The influence factors in every aspect on operating range were explored by the calculated result. The new operating range calculation model provides the theoretical basis for the design and applications as well as the comprehensive evaluation of a GIITS. 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).

A design on a control method of a new type of focal plane shutter (EI CONFERENCE) 会议论文 OAI收割
2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010, August 24, 2010 - August 26, 2010, Changchun, China
Xue L.; Ming L.; Zheng L.-N.; Zhou J.-F.; Zhang H.-W.; Zhang J.-C.

收藏 | 浏览/下载：33/0 | 提交时间：2013/03/25

In order to ensure appropriate exposure time and no exposure while electric charge is transferring after taking a photograph it is necessary to have the shutter mechanism cooperate with CCD for area CCD aerial cameras. The ground object illumination has a wide range which is from 4000Lx to 100000Lx so a shutter which is high efficient and a continuous stepless adjustment are also required. This paper introduces the fundamental principle structural design and control procedure about this new focal plane shutter. Under the control of DSP the velocity of shutter curtain governed by the shutter motor can be not only precisely controlled but also the durability and the reliability are increased. The experiment results have shown that this new shutter has the higher stability of movement long life span with more than 105 operating times a wide range of exposure time from1/ 50s to 1/ 320s(depending on the slit width)and the exposure error is less than 10%. With the CCD gain adjustment the performance of this shutter is fully satisfied with the requirements of area CCD aerial cameras. 2010 IEEE.

The removal of HCI by CaO in the presence of steam 会议论文 OAI收割
Joint Conference: International Thermal Treatment Technologies (IT3) and Hazardous Waste Combustors (HWC), Cincinnati, OH, United states, May 18, 2009 - May 21, 2009
作者: Wang R(王蕊); Zhang JL(张金龙); Tian JG(田君国); Xu YX(徐永香); Sheng HZ(盛宏至)

收藏 | 浏览/下载：15/0 | 提交时间：2017/07/14

Alkali solutions Bed materials Concentration of Diffusion process Fluidized bed reactors Fluidized-bed reactor Molar ratio Off-gas treatment Operating temperature Product layer Reaction process Reaction progress Removal efficiencies Steam concentrations Surface area Temperature range

Thermal performance of a micro-combustor for micro-gas turbine system 期刊论文 OAI收割
energy conversion and management, 2007, 卷号: 48, 期号: 5, 页码: 1569-1578
作者: Cao, H. L.; Xu, J. L.

收藏 | 浏览/下载：123/30 | 提交时间：2010/09/27

micro-combustion micro-combustor thermal performance operating range heat loss

A novel method of calculation-separating second order spectrum in grating spectrometers (EI CONFERENCE) 会议论文 OAI收割
ICO20: Optical Devices and Instruments, August 21, 2005 - August 26, 2005, Changchun, China
作者: Xiang Y.

收藏 | 浏览/下载：14/0 | 提交时间：2013/03/25

In grating spectrometers according to wavelength short-wave second-order spectrum superimposes on long-wave spectrum with the wavelength twice as long as the short-wave. Usually spectrum of long-wave range is got via preventing the superimposition of short-wave second-order spectrum by cut-off filters. This paper analyses the characteristic of the ratio of short-wave second-order spectrum in long-wave superimposing spectral range to first-order spectrum in short-wave free spectral range of diffraction gratings. The paper studies a novel method of obtaining long-wave spectrum via calculation-separating short-wave second-order spectrum from mixed spectra in long-wave superimposing spectral range by data processing with the spectrum of free spectral range and the ratio (instrumental parameter) of short-wave second-order spectrum to first-order spectrum measured beforehand. Spectrum-measurement experiments were carried out by VIS-NIR spectrometers (0.36 - 1.0m). That the spectrum data got via calculation-separation coincide with those got via cut-off filter indicates that spectrum can be obtained by processing the measured date without filters in whole operating wavelength.