中国科学院机构知识库网格系统: 检索

Coupling Enhancement Effect of the Magnetic Field and Wall Superheat on Boiling Heat Transfer Characteristics of Magnetic Nanofluid (MNF) under Reduced Gravity 期刊论文 OAI收割
MICROGRAVITY SCIENCE AND TECHNOLOGY, 2023, 卷号: 35, 期号: 1, 页码: 4
作者: Guo, Kaikai; Li, Huixiong; Feng, Yuan; Wang, Tai; Zhao JF(赵建福)

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收藏 | 浏览/下载：34/0 | 提交时间：2023/04/20

Reduced gravity Magnetic field Magnetic nanofluid (MNF) Boiling Wall superheat

Macroscopic and spectroscopic studies of the enhanced scavenging of Cr(VI) and Se(VI) from water by titanate nanotube anchored nanoscale zero-valent iron 期刊论文 OAI收割
JOURNAL OF HAZARDOUS MATERIALS, 2017, 卷号: 336, 期号: -, 页码: 214-221
作者: Hu, BW; Chen, GH; Jin, CG; Hu, J; Huang, CC

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收藏 | 浏览/下载：67/0 | 提交时间：2018/08/30

Layered Double Hydroxide Natural Organic-matter Humic Substance Interaction Electroplating Waste-water Reduced Graphene Oxides Chromium Vi Removal Weak Magnetic-field Zerovalent Iron Aqueous-solution Carbon Nanotubes

Magnetic Field Enhanced Photoelectron Ionization Source Portable TOF-MS and Its Application in Analysis of Volatile Reduced Sulfur Compounds 期刊论文 OAI收割
chinese journal of analytical chemistry, 2015, 卷号: 43, 期号: 3, 页码: 444-450
作者: Li Jin-Xu; Hou Ke-Yong; Zhao Wu-Duo; Chen Wen-Dong; Jiang Ji-Chun

收藏 | 浏览/下载：62/0 | 提交时间：2015/11/17

Volatile reduced sulfur compounds Magnetic field enhanced photoelectron ionization Portable time-of-flight mass spectrometer Online monitoring

On hyperspectral remotely sensed image classification based on MNF and AdaBoosting (EI CONFERENCE) 会议论文 OAI收割
2012 3rd IEEE/IET International Conference on Audio, Language and Image Processing, ICALIP 2012, July 16, 2012 - July 18, 2012, Shanghai, China
作者: Yu P.; Yu P.; Gao X.

收藏 | 浏览/下载：36/0 | 提交时间：2013/03/25

As an effective statistical learning tool AdaBoosting has been widely used in the field of pattern recognition. In this paper a new method is proposed to improve the classification performance of hyperspectral images by combining the minimum noise fraction (MNF) and AdaBoosting. Because the hyperspectral imagery has many bands which have strong correlation and high redundancy the hyperspectral data are pre-processed by the minimum noise fraction to reduce the data's dimensionality whilst to remove noise bands simultaneously. Then we use an AdaBoost algorithm to conduct the classification of hyperspectral remotely sensed image. Experimental results show that the classification accuracy is improved and the time of calculation is reduced as well. 2012 IEEE.

Proton Transfer Reaction Mass Spectrometry for On-line Detection of Trace Volatile Organic Compounds in Breath 期刊论文 OAI收割
CHINESE JOURNAL OF ANALYTICAL CHEMISTRY, 2012, 卷号: 40
作者: Shen CY(沈成银); Li JQ(李建权); Wang HZ(王宏志); Zhi ZH(志中华); Wang HM(王鸿梅)

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收藏 | 浏览/下载：21/0 | 提交时间：2020/10/26

PTR-MS REDUCED-FIELD GAS-ANALYSIS TUBE Breath Volatile organic compounds Real-time monitor Proton transfer reaction mass spectrometry On-line mass spectrometry

Design of driving circuit for binocular CCD image system (EI CONFERENCE) 会议论文 OAI收割
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices for Detector, Imager, Display, and Energy Conversion Technology, April 26, 2010 - April 29, 2010, Dalian, China
作者: Zhang X.; Zhang X.; Zhang X.

收藏 | 浏览/下载：75/0 | 提交时间：2013/03/25

The paper designs a driving circuit of high sensitive wide dynamic and high signal-to-noise ratio for binocular CCD imaging system which adopts a Dalsa-made high resolution full-frame 33-mega pixels area CCD FTF5066M. Inner structure and driving timing of the FTF5066M sensor are presented. Field Programmable Gate Array (FPGA) is used as the main device to accomplish the timing design of the circuits and power driver control of the two sensors. By using the Correlated Double Sampling (CDS) technique the video noise is reduced and the SNR of the system is increased. A 12- bit A/D converter is used to improve the image quality. The output rate of the imaging system designed with integrated chip can reach to 1.3 frames per second through bi-channel. For its good performance low power consumption and small volume the driving system can be applied to aeronautics and astronautics field. With a further improvement a maximum data output rate of 2.7 frames per second can be reached through all the eight channels of the two CCDs. 2010 Copyright SPIE - The International Society for Optical Engineering.

Driving and image enhancement for CCD sensing image system (EI CONFERENCE) 会议论文 OAI收割
2010 3rd IEEE International Conference on Computer Science and Information Technology, ICCSIT 2010, July 9, 2010 - July 11, 2010, Chengdu, China
Zhang M.; Ren J.

收藏 | 浏览/下载：50/0 | 提交时间：2013/03/25

The paper designs a driving circuit of high sensitive wide dynamic for CCD sensing imaging system which adopts a Dalsa-made high resolution full-frame 33-mega pixels area CCD FTF5066M. Field Programmable Gate Array (FPGA) is used as the main device to accomplish the timing design of the circuits and power driver control of the sensor. By using the Correlated Double Sampling (CDS) technique the video noise is reduced and the SNR of the system is increased. The output rate of the imaging system designed with integrated chip can reach to 1.3 frames per second through bi-channel output. We use the histogram specification to adjust the brightness of the captured image. And then use the median filtering to suppress the noise. The traditional gray mean gradient (GMG) and the objective evaluation method based on Human Visual System (HVS) used to verify the effect of image enhancement. 2010 IEEE.

A design of high-speed and low-consume parallel grouping RS code and simulation (EI CONFERENCE) 会议论文 OAI收割
2010 3rd International Conference on Advanced Computer Theory and Engineering, ICACTE 2010, August 20, 2010 - August 22, 2010, Chengdu, China
Chen C.; Jin G.

收藏 | 浏览/下载：42/0 | 提交时间：2013/03/25

RS code is a linear error correction codes with better error correction capability is widely used in different kinds of occasions for communications or data storage. But for its high difficulty of coding and decoding algorithm and low throughput optimization RS algorithm is always studied as one of the focus in the error-correction field. A new coding method parallel coding and decoding data into groups in lower step finite field for avoiding complex matrix iteration and Chien search computation is proposed in this paper. It is proved that the coding and decoding throughput of the parallel grouping RS coder is increased and the hardware complexity is reduced with changeless error-correction capability from the simulation results using ModelSim SE 6.0 and synthetic results using ISE 9.11. 2010 IEEE.

A design of beam shaping unit for 193nm lithography illumination system using angular spectrum theory (EI CONFERENCE) 会议论文 OAI收割
6th International Symposium on Precision Engineering Measurements and Instrumentation, August 8, 2010 - August 11, 2010, Hangzhou, China
作者: Zhao Y.; Zhang W.; Zhang W.; Li S.; Gong Y.

收藏 | 浏览/下载：36/0 | 提交时间：2013/03/25

Off-axis illumination (OAI) technology is widely used to enhance resolution for deep ultraviolet lithography. The realizing methods of OAI include geometrical optics method and physical optics method. However the former has the disadvantage of weak intensity distribution controlling ability and the latter introduces simulation errors evidently when dealing with near field diffraction propagation. A diffractive optical element (DOE) designing method using plane wave angular spectrum theory is presented in this paper. Several kinds of OAI modes at near field away from DOE can be realized and simulation errors and the size of illuminator are also reduced. According to studying the relationships of the sampling point distance of DOE light beam propagation distance and the structure of the beam shaping unit a method of determining the designing parameters is discussed. Using this method several illumination modes are realized and simulation results show that all diffraction efficiencies reach up to 84%. The method of DOE manufacturing is analyzed at last and it is proven to be feasible. 2010 SPIE.

Spaceborne laser interconnect technology based on human bionics (EI CONFERENCE) 会议论文 OAI收割
2009 IEEE International Conference on Mechatronics and Automation, ICMA 2009, August 9, 2009 - August 12, 2009, Changchun, China
作者: He X.; Wang J.

收藏 | 浏览/下载：50/0 | 提交时间：2013/03/25

As a result of comparative study on human visual and Free Space Optical (FSO) communication a new concept of satellites laser interconnect was proposed based on human bionics. For the laser link is difficult to set up directly a new concept was given out based on the three processes of human visual capturing the objectives: voice assisting to guide eyes' wide Field Of View (FOV) cursory capturing and eyes' foveal FOV high-resolution imaging. Three similar processes were introduced to spaceborne laser interconnect which were radio assisting to guide beacons laser wide FOV capturing and communication laser narrow FOV capturing so that the difficulty of setting up the optical communication link was reduced evidently. Meanwhile the antenna optical system based on the bionics was given out. Each laser terminal configured two independent optical antenna through the spaceborne storage and time-domain link switching complex topology network could be set up. The simulation system was built using Virtual Reality Toolbox the result showed that the laser terminal could search and set up communication links which took about only lOOms from capturing the beacon to setting up communication. 2009 IEEE.