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浏览/检索结果: 共7条,第1-7条 帮助

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Facile phyto-mediated synthesis of silver nanoparticles using Chinese winter jujube (Ziziphus jujuba Mill. cv. Dongzao) extract and their antibacterial/catalytic properties 期刊论文  OAI收割
IET NANOBIOTECHNOLOGY, 2017, 卷号: 11, 期号: 8, 页码: 973-980
作者:  
Liu, Jing-Fu;  Yuan, Chun-Gang;  Huo, Can;  Gui, Bing;  Chen, Yong-Sheng
  |  收藏  |  浏览/下载:39/0  |  提交时间:2018/07/26
Silver  Nanoparticles  Nanofabrication  Antibacterial Activity  Biomedical Materials  Nanobiotechnology  Scanning Electron Microscopy  X-ray Diffraction  Transmission Electron Microscopy  Ultraviolet Spectra  Visible Spectra  X-ray Chemical Analysis  Fourier Transform Infrared Spectra  Catalysis  Wavelength 446 Nm  Temperature 293 k To 298 k  Ag  Escherichia Coli  Staphylococcus Aureus  Biomolecules  Catalytic Activity  Metal Ions  Colloidal Solution  Ftir Spectra  Uv-vis Absorbance  Tem  Sem  Xrd  Fourier Transform Infrared Spectroscopy  Energy-dispersive X-ray Spectroscopy  Scanning Electron Microscopy  X-ray Diffraction  Selected Area Electron Diffraction  Transmission Electron Microscopy  Atomic Force Microscopy  Uv-visible Spectroscopy  Catalytic Properties  Antibacterial Properties  Chinese Winter Jujube Extract  Silver Nanoparticles  Facile Phyto-mediated Synthesis  
Visible-to-ultraviolet Upconvertion: Energy transfer, material matrix, and synthesis strategies 期刊论文  OAI收割
Applied Catalysis B: Environmental, 2017, 卷号: 206, 页码: 89-103
作者:  
Zhang WY(张文妍);  Yang, Songlin;  Li, Jian;  Gao W(高薇);  Deng, Yibing
收藏  |  浏览/下载:23/0  |  提交时间:2017/04/27
Methanobactin-mediated synthesis of bimetallic Au-Pd/Al2O3 toward an efficient catalyst for glucose oxidation 期刊论文  OAI收割
IET Nanobiotechnology, 2017, 卷号: 11, 期号: 5, 页码: 512-516
作者:  
Xin JY(辛嘉英);  Fan, Hong-chen;  Ji SF(季生福)
收藏  |  浏览/下载:39/0  |  提交时间:2017/09/15
Resolution performance of extreme ultraviolet telescope (EI CONFERENCE) 会议论文  OAI收割
4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, November 19, 2008 - November 21, 2008, Chengdu, China
作者:  
Yang L.;  Chen B.;  Chen B.;  Liang J.-Q.;  Ni Q.-L.
收藏  |  浏览/下载:30/0  |  提交时间:2013/03/25
Extreme Ultraviolet Telescope (EUT) will image solar corona in four EUV narrow bandpasses defined by multilayered coatings deposited on normal incidence optics. In order to make sure it will get sub-arcsecond angular resolution in the mission we have to test its resolution performance on ground. The EUT is aligned by Zygo interferometer first and a global wavefront error of 0.152 peak to valley is obtained ( = 632.8nm ). Because of the difficulty of angular resolution test for EUT at its operating wavelengths  we test its optical performance at visible and UV band. The method is to place the resolution test-target on the focal plane of collimator and illuminate the target by visible and UV light espectively  then the collimated light will go through EUT and image at focal plane on CCD. By analysis of the images obtained in experiments we conclude that the angular resolution of EUT is 1.22 at visible light ( = 570nm ) which is very close to diffraction limit (1.20) and according to these results we estimate that the operational wavelength resolution is better than 0.32  meets design requirements. While for UV light  the angular resolution is 1.53 that is different from diffraction limit (0.53)  the error comes mainly from large pixel of EUV camera. 2009 SPIE.  
Using real-time embedded system with multiple DSPs in corona detection (EI CONFERENCE) 会议论文  OAI收割
ICO20: Optical Information Processing, August 21, 2005 - August 26, 2005, Changchun, China
作者:  
Yan F.;  Yang H.-J.
收藏  |  浏览/下载:22/0  |  提交时间:2013/03/25
Field emission properties of ZnO nanowires (EI CONFERENCE) 会议论文  OAI收割
ICO20: Display Devices and Systems, August 21, 2005 - August 26, 2005, Changchun, China
Meng X. Q.; Shen D. Z.; Zhang J. Y.; Zhao D. X.; Lu Y. M.; Zhang Z. Z.; Fan X. W.
收藏  |  浏览/下载:23/0  |  提交时间:2013/03/25
Multiwavelet based multispectral image fusion for corona detection (EI CONFERENCE) 会议论文  OAI收割
ICO20: Optical Information Processing, August 21, 2005 - August 26, 2005, Changchun, China
作者:  
收藏  |  浏览/下载:30/0  |  提交时间:2013/03/25
Image fusion refers to the integration of complementary information provided by various sensors such that the new images are more useful for human or machine perception. Multiwavelet transform has simultaneous orthogonality  symmetry  compact support  and vanishing moment  which are not possible with scalar wavelet transform. Multiwavelet analysis can offer more precise image analysis than wavelet multiresolution analysis. In this paper  a new image fusion algorithm based on discrete multiwavelet transform (DMWT) to fuse the dual-spectral images generated from the corona detection system is presented. The dual-spectrum detection system is used to detect the corona and indicate its exact location. The system combines a solar-blind UV ICCD with a visible camera  where the UV image is useful for detecting UV emission from corona and the visible image shows the position of the corona. The developed fusion algorithm is proposed considering the feature of the UV and visible images adequately. The source images are performed at the pixel level. First  a decomposition step is taken with the DMWT. After the decomposition step  a pyramid for each source image in each level can be obtained. Then  an optimized coefficient fusion rule consisting of activity level measurement  coefficient combining and consistency verification is used to acquire the fused coefficients. This process reduces the impulse noise of UV image. Finally  a new fused image is obtained by reconstructing the fused coefficients using inverse DMWT. This image fusion algorithm has been applied to process the multispectral UV/visible images. Experimental results show that the proposed method outperforms the discrete wavelet transform based approach.