中国科学院机构知识库网格系统: 检索

Search for lepton-flavor-violation in $Z$-boson decays with $\tau$-leptons with the ATLAS detector 期刊论文 OAI收割
PHYSICAL REVIEW LETTERS, PHYSICAL REVIEW LETTERS, 2022, 2022, 卷号: 127, 127, 页码: 271801, 271801
作者: ATLAS Collaboration

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收藏 | 浏览/下载：18/0 | 提交时间：2023/11/09

p p: scattering p p: scattering p p: colliding beams Z0: leptonic decay Z0: rare decay lepton: flavor: violation tau: hadronic decay ATLAS Z0: branching ratio: upper limit sensitivity CERN LHC Coll experimental results Z0 --> electron tau Z0 --> muon tau 13000 GeV-cms S044.25 S044.26 p p: colliding beams Z0: leptonic decay Z0: rare decay lepton: flavor: violation tau: hadronic decay ATLAS Z0: branching ratio: upper limit sensitivity CERN LHC Coll experimental results Z0 --> electron tau Z0 --> muon tau 13000 GeV-cms S044.25 S044.26

Topological crystalline insulator PbxSn1-xTe thin films on SrTiO3 (001) with tunable Fermi levels 期刊论文 OAI收割
Apl Materials, 2014, 卷号: 2, 期号: 5
H. Guo; C. H. Yan; J. W. Liu; Z. Y. Wang; R. Wu; Z. D. Zhang; L. L. Wang; K. He; X. C. Ma; S. H. Ji; W. H. Duan; X. Chen; Q. K. Xue

收藏 | 浏览/下载：23/0 | 提交时间：2014/07/03

experimental realization bi2te3 snte bi2se3 phase limit

An embedded infrared image enhancement system based on DSP and FPGA (EI CONFERENCE) 会议论文 OAI收割
2012 International Conference on Manufacturing Engineering and Process, ICMEP 2012, April 21, 2012 - April 22, 2012, Kunming, China
作者: Zhang T.

收藏 | 浏览/下载：46/0 | 提交时间：2013/03/25

According to the disadvantage of the large noises of histogram equalization algorithm a new adaptive image enhancement algorithm is presented. First the statistical histogram of the infrared image is done. Then the threshold of plateaus Equalization is calculated and the statistical histogram is modified. Finally the bright values of the pixels of the image are changed. An embedded high speed image enhancement processing system on high performance DSP TMS320DM642 and FPGA was designed. Experimental results with real images shown that the system can improve the contrast of the infrared image limit the noises of the enhancement image and effectively enhance the infrared image the running time of the program is shorter so it can meet the requirements of real-time in the project. (2012) Trans Tech Publications.

Real-time defogging processing of aerial images (EI CONFERENCE) 会议论文 OAI收割
2010 6th International Conference on Wireless Communications, Networking and Mobile Computing, WiCOM 2010, September 23, 2010 - September 25, 2010, Chengdu, China
作者: Liu G.

收藏 | 浏览/下载：37/0 | 提交时间：2013/03/25

A real-time image defogging processing method based on FPGA is proposed to increase low-contrast of the aerial images in foggy vision conditions. According to the high similarity of the contiguous frame histogram in video image the histogram equalization algorithm is improved to enhance the image contrast. The median filter algorithm is used to eliminate the noise of the image. The experimental results demonstrate that the method can efficiently enhance the contrast strengthen the detail and clarify definition for the fog-degraded aerial images. The visibility limit of the images has been increased to a time above. Simultaneously the method satisfies the real-time processing requirement of aerial video images which has direct applications to the problem of poor visibility conditions. 2010 IEEE.

Manufacturing and testing of the line-array fiber-optic image slicer based on silicon V-grooves (EI CONFERENCE) 会议论文 OAI收割
MEMS/MOEMS Technologies and Applications III, November 12, 2007 - November 14, 2007, Beijing, China
作者: Zhu Y.

收藏 | 浏览/下载：23/0 | 提交时间：2013/03/25

Linear fiber-optic image slicer is used more and more in spatial exploration and imaging system. In this paper a plane arranging method of fiber-optic array based on Si-V grooves is established in order to improve the accuracy and reduce the cost of manufacturing. Firstly the Si-V groove array is micro-machined with anisotropic etching process then optical fibers are placed in the grooves orderly with plane arranging method. Secondly the end surfaces of the device are polished also the linear fiber-optic image slicer is packaged. Finally some parameters are tested including structure parameters transmittivity and vibration test. Experimental results indicate that the maximum error accumulated in 2000 periods of the Si-V grooves is 0.5 m the error of the height in Si-V grooves is less than 0.15m the roughness of the end surface is less than 0.9nm. The transmittivity of the linear fiber-optic image slicer that without optical film is 51.46% at the wavelength of 632.8nm. After random vibration experiment the ratio of the broken fiber increased by 0.1%. While the temperature reached 320C the stress of epoxy will be 130Mpa which is close to the limit resistance stress of 139Mpa some cracks appeared.

Search for axions from the Kuo-Sheng nuclear power reactor with a high-purity germanium detector 期刊论文 OAI收割
PHYSICAL REVIEW D, 2007, 卷号: 75, 期号: 5
作者: TEXONO Collaboration

收藏 | 浏览/下载：18/0 | 提交时间：2015/12/02

DARK-MATTER AXIONS ELECTRON-BEAM-DUMP SOLAR AXIONS EXPERIMENTAL LIMIT CP CONSERVATION PULSED REACTOR PARTICLES INVARIANCE DECAY TRANSITION

CMOS APS imaging system application in star tracker (EI CONFERENCE) 会议论文 OAI收割
Advanced Materials and Devices for Sensing and Imaging II, November 8, 2004 - November 10, 2004, Beijing, China
作者: Li J.; Liu Y.; Liu Y.; Liu Y.; Liu J.

收藏 | 浏览/下载：58/0 | 提交时间：2013/03/25

Small satellites are capable of performing space explore missions that require accurate attitude determination and control. However low weight size power and cost requirements limit the types of attitude sensor of small craft such as CCD are not practical for small satellites. CMOS APS is a good substitute for attitude sensors of small craft. Some of the technical advantages of CMOS APS are no blooming single power low power consumption small size and little support circuitry direct digital output simple to system design in particular radiation-hard characteristic compare with CCD. This paper discusses the application probability of CMOS APS in star tracker for small satellites further more a prototype ground-based star camera based on STAR250 CMOS image sensor has been built. In order to extract stars positions coordinates subpixel accuracy centroiding algorithm has been developed and tested on some ground-based images. Moreover the camera system star sensitivity and noise model are analyzed and the system accuracy is been evaluated. Experimental results indicate that a star camera based on CMOS APS is a viable practical attitude sensor appropriate for space small satellites.

CP test in J/psi -> gamma phi phi decay 期刊论文 OAI收割
PHYSICS LETTERS B, 2004, 卷号: 580, 期号: 40972, 页码: 163-168
作者: Ma, JP; Ping, RG; Zou, BS; Ma, JP , CCAST, World Lab, POB 8730, Beijing 100080, Peoples R China.

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收藏 | 浏览/下载：16/0 | 提交时间：2012/08/30

Electric-dipole Moment Supersymmetric Theories Experimental Limit Neutron Qcd

Supersymmetric CP violation in B -> X(s)l(+)l(-) in the minimal supergravity model 期刊论文 OAI收割
PHYSICAL REVIEW D, 2000, 卷号: 61, 期号: 11, 页码: -
作者: Huang, CS; Wei, L; Huang, CS , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.

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收藏 | 浏览/下载：11/0 | 提交时间：2012/08/29

Electric-dipole Moment Large Tan Beta Experimental Limit Constrained Mssm Standard Model B->s-gamma Neutron Phases Decays Unification

Electric dipole moment and CP violation in B -> X(s)l(+)l(-) in supergravity models with nonuniversal gaugino masses 期刊论文 OAI收割
PHYSICAL REVIEW D, 2000, 卷号: 62, 期号: 1, 页码: -
作者: Huang, CS; Wei, L; Huang, CS , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.

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收藏 | 浏览/下载：14/0 | 提交时间：2012/08/29

Supersymmetric Standard Model Large Tan Beta Experimental Limit N=1 Supergravity Phases Neutron Decays Unification Constraints Parameters