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浏览/检索结果: 共14条，第1-10条 帮助

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3D Printing of natural sandstone at pore scale and comparative analysis on micro-structure and single/two-phase flow properties 期刊论文  OAI收割
ENERGY, 2022, 卷号: 261, 期号: -, 页码: -
作者:  Song, Rui;  Wang, Yao;  Tang, Yu;  Peng, Jiajun;  Liu, Jianjun
  |  收藏  |  浏览/下载：29/0  |  提交时间：2023/08/02
Partition model for trace elements between liquid metal and silicate melts involving the interfacial transition structure: An exploratory two-phase first-principles molecular dynamics study 期刊论文  OAI收割
JOURNAL OF MOLECULAR LIQUIDS, 2022, 卷号: 364, 页码: 14
作者:  Sun, Yiwei;  Qian, Guoyu;  Pang, Sheng;  Lu, Jijun;  Guo, Jianwei
  |  收藏  |  浏览/下载：31/0  |  提交时间：2023/02/24
Synthesis and research of epoxy resin toughening agent 期刊论文  OAI收割
SPRINGERPLUS, 2016, 卷号: 5, 期号: 无, 页码: 806
作者:  Ma, Hongming;  Hu, Nannan;  Wu, Cheng;  Zhu, Yinfeng;  Cao, Yi
收藏  |  浏览/下载：26/0  |  提交时间：2017/09/06
Influence of high temperature annealing in nitrogen on upconversion luminescence of -NaYF4: Yb3+, Er3+ hexagonal sub-microplates (EI CONFERENCE) 会议论文  OAI收割
2012 International conference on Function Materials and Nanotechnology, FMN 2012, May 19, 2012 - May 20, 2012, Zhengzhou, China
作者:  Zhao J.
收藏  |  浏览/下载：20/0  |  提交时间：2013/03/25
The pure -NaYF4: Yb3+  Er3+ hexagonal sub-microplates were successfully prepared by the combination of coprecipitation and hydrothermal methods using sodium citrate as chelator. The size of them is about 600 nm 400 nm (side length thickness). The obtained sample was divided into two parts and one of them was annealed in nitrogen at 300 C for 2 hours. The crystal structure of the -NaYF4: Yb3+  Er3+ hexagonal sub-microplates before and after annealing treatment is hexagonal phase. Under the excitation of 980 nm diode laser  the upconversion luminescence intensity the sample after annealing is much stronger than that of the sample without annealing treatment. High temperature annealing process improved the crystallization of the sample  resulting in the decrease of the nonradiative relaxation and the enhancement of the upconversion luminescence. (2012) Trans Tech Publications  Switzerland.  
a two-phase approach to subscription subsumption checking for content-based publish/subscribe systems 会议论文  OAI收割
24th IEEE International Conference on Advanced Information Networking and Applications, AINA2010, Perth, WA, Australia, April 20,
Qin Xiulei; Wei Jun; Zhang Wenbo; Zhong Hua; Huang Tao
  |  收藏  |  浏览/下载：18/0  |  提交时间：2011/03/31
Imaging analysis of a novel compound diffractive telescope system (EI CONFERENCE) 会议论文  OAI收割
Optical Manufacturing and Testing VIII, August 4, 2009 - August 5, 2009, San Diego, CA, United states
作者:  Liu H.;  Liu Y.;  Liu Y.;  Liu Y.;  Zhang H.
收藏  |  浏览/下载：34/0  |  提交时间：2013/03/25
The main feature of the compound diffractive telescope is the combination of diffractive optics with compound structure arranged eyepieces. In this paper  a design of the compound diffractive telescope is firstly introduced  and a 4.2 FOV is obtained with one primary lens and twenty-one eyepieces. Secondly  image characteristic of different channels is analyzed with the design wavelength in ASAP  and one modified phase function model of diffractive optical element is introduced to analyze the MTF curves for 0 FOV  which provides a more accurate prediction of the performance of the system. Then the system is tested by the star image test  and the diffraction limit images are got within 2 FOV. And finally  two pictures taken from the adjacent FOV proved to be able to be spliced together. All the results above demonstrate that a good performance of the compound diffractive telescope. 2009 SPIE.  
Detailed measurements of flow structure inside a dense gas-solids fluidized bed 期刊论文  OAI收割
POWDER TECHNOLOGY, 2008, 卷号: 180, 期号: 3, 页码: 339-349
作者:  
收藏  |  浏览/下载：22/0  |  提交时间：2013/10/08
Driving techniques for high frame rate CCD camera (EI CONFERENCE) 会议论文  OAI收割
Electronic Imaging and Multimedia Technology V, November 12, 2007 - November 15, 2007, Beijing, China
Guo W.; Jin L.; Xiong J.
收藏  |  浏览/下载：29/0  |  提交时间：2013/03/25
This paper describes a high-frame rate CCD camera capable of operating at 100 frames/s. This camera utilizes Kodak KAI-0340  an interline transfer CCD with 640(vertical)480(horizontal) pixels. Two output ports are used to read out CCD data and pixel rates approaching 30 MHz. Because of its reduced effective opacity of vertical charge transfer registers  interline transfer CCD can cause undesired image artifacts  such as random white spots and smear generated in the registers. To increase frame rate  a kind of speed-up structure has been incorporated inside KAI-0340  then it is vulnerable to a vertical stripe effect. The phenomena which mentioned above may severely impair the image quality. To solve these problems  some electronic methods of eliminating these artifacts are adopted. Special clocking mode can dump the unwanted charge quickly  then the fast readout of the images  cleared of smear  follows immediately. Amplifier is used to sense and correct delay mismatch between the dual phase vertical clock pulses  the transition edges become close to coincident  so vertical stripes disappear. Results obtained with the CCD camera are shown.  
Fabrication of two-weir structure-based packed columns for on-chip solid-phase extraction of DNA 期刊论文  OAI收割
electrophoresis, 2007, 卷号: 28, 期号: 16, 页码: 2920-2926
作者:  Zhong, Runtao;  Liu, Dayu;  Yu, Linfen;  Ye, Nannan;  Dai, Zhongpeng
收藏  |  浏览/下载：31/0  |  提交时间：2010/11/30
Effect of difference of modifiers' chain on size and optical property of core-shell cds nanocrystals 期刊论文  iSwitch采集
Chemical journal of chinese universities-chinese, 2005, 卷号: 26, 期号: 7, 页码: 1334-1337
作者:  Lou, WJ;  Chen, M;  Liu, WM;  Xue, QJ;  Zhou, XK
收藏  |  浏览/下载：23/0  |  提交时间：2019/05/10