中国科学院机构知识库网格系统: 检索

Anion Photoelectron Spectroscopy and Theoretical Study of HAuCN and [HAuCN](-): Spin-Orbit Coupling and Low-Lying Excited States 期刊论文 OAI收割
JOURNAL OF PHYSICAL CHEMISTRY A, 2020, 卷号: 124, 期号: 23, 页码: 4712-4719
作者: Xiong, XG; Liu, HT

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收藏 | 浏览/下载：46/0 | 提交时间：2021/09/06

Formation of Cerium and Neodymium Isocyanides in the Reactions of Cyanogen with Ce and Nd Atoms in Argon Matrices 期刊论文 OAI收割
JOURNAL OF PHYSICAL CHEMISTRY A, 2019, 卷号: 123, 期号: 38, 页码: 8208-8219
作者: Fang, ZT; Vasiliu, M; Chen, XT; Gong, Y; Andrews, L

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收藏 | 浏览/下载：42/0 | 提交时间：2020/10/16

ORDER REGULAR APPROXIMATION ABLATED U ATOMS INFRARED-SPECTRA TRIPLE EXCITATIONS BASIS-SETS CHEMISTRY CYANIDE THORIUM COORDINATION U(NC)(2)

High stability of the He atom confined in a U@C-60 fullerene 期刊论文 OAI收割
RSC ADVANCES, 2016, 卷号: 6, 期号: 35, 页码: 29288—29293
作者: Lei, YY; Wang, B; Gao, Y; Jiang, WR

收藏 | 浏览/下载：24/0 | 提交时间：2016/09/12

ORDER REGULAR APPROXIMATION DENSITY-FUNCTIONAL THEORY ENDOHEDRAL METALLOFULLERENES ELECTRONIC-STRUCTURE BASIS-SETS 32-ELECTRON PRINCIPLE MOLECULES CHEMISTRY ENERGY PSEUDOPOTENTIALS

On the gold-ligand covalency in linear [AuX2](-) complexes 期刊论文 OAI收割
DALTON TRANSACTIONS, 2015, 卷号: 44, 期号: 12, 页码: 5535—5546
作者: Xiong, XG; Wang, YL; Xu, CQ; Qiu, YH; Wang, LS

收藏 | 浏览/下载：31/0 | 提交时间：2015/12/09

Application of adaptive enhancement means in head and neck CR image (EI CONFERENCE) 会议论文 OAI收割
2012 3rd International Conference on Information Technology for Manufacturing Systems, ITMS 2012, September 8, 2012 - September 9, 2012, Qingdao, China
Zhang M.-H.; Zhang Y.-Y.

收藏 | 浏览/下载：37/0 | 提交时间：2013/03/25

Digital CR of head and neck overcomes the disadvantage of regular X-ray radiography which can not reveal bone and soft tissue position deficiency in one exposing and reduces the Xray radiation dose. Meanwhile various factors cause the decline of image quality and images must be enhanced in order to meet demands of doctor's clinical diagnosis. The general enhancement algorithms don't consider body's structure differences and density characteristics. A new adaptive CR enhancement algorithm was proposed in this article and head and neck CR images were processed with this method and compared with linear unsharp masking method. The experiment proves that the details of CR image enhanced were abundant and enhanced CR image had good visual effect SNR was high as well as detail variance /background variance (DV/BV) indicating that this algorithm is suitable for head and neck CR medical images. (2012) Trans Tech Publications Switzerland.

Mechanism Insights into Second-Order Nonlinear Optical Responses of Anionic Metal Clusters 期刊论文 OAI收割
Journal of Cluster Science, 2011, 卷号: 22, 期号: 3, 页码: 365-380
Q. H. Li; K. C. Wu; R. J. Sa; Y. Q. Wei

收藏 | 浏览/下载：91/0 | 提交时间：2012/06/06

Density functional calculations Charge transfer Metal-metal interactions Nonlinear optics correct asymptotic-behavior order regular approximation density-functional theory quadratic hyperpolarizability correlation energies crystal-structure screening model nlo properties electron-gas complexes

Second-order nonlinear optical properties of transition metal clusters MoS4Cu4X2Py2 (M = Mo, W; X = Br, I) 期刊论文 OAI收割
Physical Chemistry Chemical Physics, 2009, 卷号: 11, 期号: 22, 页码: 4490-4497
Q. H. Li, K. C. Wu, Y. Q. Wei, R. J. Sa, Y. P. Cui, C. G. Lu, J. Zhu and J. G. He

收藏 | 浏览/下载：20/0 | 提交时间：2012/11/06

density-functional theory heteronuclear bimetallic complexes ruthenium(ii) ammine complexes correct asymptotic-behavior order regular approximation hyper-rayleigh scattering electron molecular-system quadratic hyperpolarizabilities 1st hyperpolarizabilities heterothiometallic clusters

Direct metal-metal interaction contributions to quadratic hyperpolarizability: A study on dirhenium complexes 期刊论文 OAI收割
Journal of Physical Chemistry A, 2008, 卷号: 112, 期号: 22, 页码: 4965-4972
Q. H. Li; R. J. Sa; Y. Q. Wei and K. C. Wu

收藏 | 浏览/下载：28/0 | 提交时间：2013/01/22

nonlinear-optical-properties correct asymptotic-behavior order regular approximation density-functional theory electron-acceptor groups mixed-valence complexes fe-ii complexes transition-metal sesquifulvalene complexes 1st hyperpolarizabilities

Research and development on the valve-less piezoelectric pump with unsymmetrical corrugation chamber bottom (EI CONFERENCE) 会议论文 OAI收割
2006 IEEE International Conference on Information Acquisition, ICIA 2006, August 20, 2006 - August 23, 2006, Weihai, Shandong, China
作者: Zhang J.; Li D.; Zhang J.; Zhang J.

收藏 | 浏览/下载：18/0 | 提交时间：2013/03/25

The valve-less piezoelectric pump is more suitable for minimization and microminiaturization than the valve piezoelectric pump especially for the Microelectromechanical System (MEMS) because of its simple structure. However in order to control the flow direction of the fluid through the pump some assembles have to be attached outside the chamber. And it is no doubt that these assembles will take some space and hinder its further microminiaturization. In this paper a novel valve-less piezoelectric pump with unsymmetrical corrugation chamber bottom (UCCB) is presented. It ingeniously takes advantage of the space of the chamber by developing its bottom into a unsymmetrical corrugation shape along the axis of the inlet and outlet. As a result a series of diffuse pipes and nozzle pipes (or wedge-shaped pipes) which substitute the regular diffuse/nozzle elements fitted outside the chamber are alternatively formed between the unsymmetrical corrugation chamber bottom (UCCB) and the piezoelectric vibrator. The piezoelectric vibrator is opposite to the UCCB. And these diffuse pipes and nozzle pipes are able to force the fluid in the chamber to flow along a single direction when the pump works. And then the mathematic model is established to present the relationship between the mean energy loss and the flow rate of the pump. Basing on the mathematic model the theory on the pump working is analysed. Finally a real UCCB valve-less piezoelectric pump is manufactured and the test with it is carried out to verify the theory above-mentioned. 2006 IEEE.

A segment detection method based on improved Hough transform (EI CONFERENCE) 会议论文 OAI收割
ICO20: Optical Information Processing, August 21, 2005 - August 26, 2005, Changchun, China
作者: Yao Z.-J.

收藏 | 浏览/下载：26/0 | 提交时间：2013/03/25

Hough transform is recognized as a powerful tool in shape analysis which gives good results even in the presence of noise and the disconnection of edge. However 3. applying the standard Hough transform equation to every point of the input image edge 4. according to the local threshold 6. merging the segments whose extreme points are near. Experiment results show the approach not only can recognize regular geometric object but also can extract the segment feature of real targets in complex environment. So the proposed method can be used in the target detection of complicated scenes traditional Hough transform can only detect the lines 2. quantizing the parameter space and extracting a group of maximums according to the global threshold eliminating spurious peaks which are caused by the spreading effects and will improve the precision of tracking. cannot give the endpoints and length of the line segments and it is vulnerable to the quantization errors. Based on the analysis of its limitations Hough transform has been improved in order to detect line segment feature of targets. The algorithm aims to avoid the loss of spatial information as well as to eliminate the spurious peaks and fix on the line segments endpoints accurately 5. fixing on the endpoints of the segments according to the dynamic clustering rule which can expediently be used for the description and classification of regular objects. The method consists of 6 steps: 1. setting up the image parameter and line-segment spaces