中国科学院机构知识库网格系统: 检索

ENERGY DECAY AND GLOBAL SMOOTH SOLUTIONS FOR A FREE BOUNDARY FLUID-NONLINEAR ELASTIC STRUCTURE INTERFACE MODEL WITH BOUNDARY DISSIPATION 期刊论文 OAI收割
DISCRETE AND CONTINUOUS DYNAMICAL SYSTEMS, 2020, 卷号: 40, 期号: 3, 页码: 1555-1593
作者: Qin, Yizhao; Guo, Yuxia; Yao, Peng-Fei

|

收藏 | 浏览/下载：24/0 | 提交时间：2020/05/24

Fluid-structure interaction nonlinear elastodynamic systems boundary dissipation Navier-Stokes equations energy decay global well-posedness

Introducing a special collection of papers in the Journal of High Energy Astrophysics on the Early Results of China's 1st X-ray Astronomy Satellite: Insight-HXMT 期刊论文 OAI收割
Journal of High Energy Astrophysics, 2020, 卷号: 27, 页码: 51-52
作者: HXMT

|

收藏 | 浏览/下载：56/0 | 提交时间：2022/02/08

Astrophysics - High Energy Astrophysical Phenomena Abstract: Insight-HXMT is the first Chinese X-ray astronomical mission, launched successfully on June 15, 2017, from China's Jiuquan Satellite Launch Center. Insight-HXMT was designed to have a broad energy coverage in X-rays, from 1-250 keV, with excellent timing and adequate energy resolution at soft X-rays, and the largest effective area at hard X-rays. This allows, in particular, to observe bright sources like X-ray binaries (XRBs) in their bright/outburst states with high cadence and high statistics at hard and soft X-rays at once. It was then expected that the Insight-HXMT mission will bring us new insights regarding the characteristics of several source classes. Examples include characterizing High-Mass X-ray Binaries (HMXBs) and the outburst evolution of Low-Mass X-ray Binaries (LMXBs). For instance, in HMXB systems, the region around their Alfven radius that is responsible to determine whether accretion or propeller occurs, or the region around the NS magnetic pole where the intense X-rays are supposed to be produced are specially appealing targets of study. For the LMXBs, the evolution the outburst and the properties of the compact objects themselves are obvious priority targets for Insight-HXMT. Due to the broad coverage in energy, Insight-HXMT is specially well suited to study the influence of thermonuclear (type-I) X-ray bursts upon the surrounding environment.

Impacts of conservation and human development policy across stakeholders and scales 期刊论文 OAI收割
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2015, 卷号: 112, 期号: 24, 页码: 7396-7401
作者: Li, Cong; Zheng, Hua; Li, Shuzhuo; Chen, Xiaoshu; Li, Jie

收藏 | 浏览/下载：75/0 | 提交时间：2016/03/03

human well-being payment for ecosystem services social-ecological systems relocation sustainable household livelihoods

Magnetic interlayer coupling between antiferromagnetic CoO and ferromagnetic Fe across a Ag spacer layer in epitaxially grown CoO/Ag/Fe/Ag(001) 期刊论文 OAI收割
PHYSICAL REVIEW B, 2012, 卷号: 85, 期号: 1
Meng, Y; Li, J; Glans, PA; Jenkins, CA; Arenholz, E; Tan, A; Gibbons, J; Park, JS; Hwang, C; Zhao, HW; Qiu, ZQ

收藏 | 浏览/下载：36/0 | 提交时间：2013/09/18

QUANTUM-WELL STATES EXCHANGE-BIAS FILMS MODEL INTERFACES ANISOTROPY SYSTEMS FIELD

Study on infrared transparent radar double band-pass filter (EI CONFERENCE) 会议论文 OAI收割
2011 International Conference on Mechatronics and Materials Processing, ICMMP 2011, November 18, 2011 - November 20, 2011, Guangzhou, China
Jia H. Y.; Feng X. G.

收藏 | 浏览/下载：27/0 | 提交时间：2013/03/25

To realize the functions of infrared transparent as well as radar double- pass Band A Y loop and Y slot compound element Frequency Selective Surface (FSS) structure is proposed which takes an infrared transparent inductive mesh as a substrate. The proposed structure is analyzed based on Galerkin spectral method. The transitivity of infrared (3um-5um) as well as the radar double passed band with two resonance frequencies (31GHz and 54GHz) is discussed. The result reveals that this structure has function of infrared transparent as well as stable radar double-band filter with effective shielding effect on S-band and C-band radar electromagnetic waves. The design with multiple passband is suitable for radar/IR composite guidance and it also offers a kind of new thinking way of design for multi-mode compound guidance systems. 2011 Trans Tech Publications.

Unexpected dehydrogenation behavior of LiBH(4)/Mg(BH(4))(2) mixture associated with the in situ formation of dual-cation borohydride 期刊论文 OAI收割
Journal of Alloys and Compounds, 2010, 卷号: 491, 期号: 1-2, 页码: L1-L4
Z. Z. Fang; X. D. Kang; P. Wang; H. W. Li; S. I. Orimo

收藏 | 浏览/下载：30/0 | 提交时间：2012/04/13

Hydrogen storage Lithium borohydride Magnesium borohydride Dual-cation Dehydrogenation hydrogen storage properties well-crystallized mg(bh4)(2) lithium borohydride complex hydrides libh4 systems 1st-principles kinetics carbon

Effect of electron-electron scattering on spin dephasing in a high-mobility low-density two-dimensional electron gas 期刊论文 OAI收割
physical review b, 2008, 卷号: 77, 期号: 19, 页码: art. no. 193307
Ruan, XZ; Luo, HH; Ji, Y; Xu, ZY; Umansky, V

收藏 | 浏览/下载：46/0 | 提交时间：2010/03/08

QUANTUM-WELL SYSTEMS GAAS SEMICONDUCTORS RELAXATION

Lossless wavelet compression on medical image (EI CONFERENCE) 会议论文 OAI收割
4th International Conference on Photonics and Imaging in Biology and Medicine, September 3, 2005 - September 6, 2005, Tianjin, China
作者: Liu H.; Liu H.; Liu H.

收藏 | 浏览/下载：53/0 | 提交时间：2013/03/25

An increasing number of medical imagery is created directly in digital form. Such as Clinical image Archiving and Communication Systems (PACS). as well as telemedicine networks require the storage and transmission of this huge amount of medical image data. Efficient compression of these data is crucial. Several lossless and lossy techniques for the compression of the data have been proposed. Lossless techniques allow exact reconstruction of the original imagery while lossy techniques aim to achieve high compression ratios by allowing some acceptable degradation in the image. Lossless compression does not degrade the image thus facilitating accurate diagnosis of course at the expense of higher bit rates i.e. lower compression ratios. Various methods both for lossy (irreversible) and lossless (reversible) image compression are proposed in the literature. The recent advances in the lossy compression techniques include different methods such as vector quantization wavelet coding neural networks and fractal coding. Although these methods can achieve high compression ratios (of the order 50:1 or even more) they do not allow reconstructing exactly the original version of the input data. Lossless compression techniques permit the perfect reconstruction of the original image but the achievable compression ratios are only of the order 2:1 up to 4:1. In our paper we use a kind of lifting scheme to generate truly loss-less non-linear integer-to-integer wavelet transforms. At the same time we exploit the coding algorithm producing an embedded code has the property that the bits in the bit stream are generated in order of importance so that all the low rate codes are included at the beginning of the bit stream. Typically the encoding process stops when the target bit rate is met. Similarly the decoder can interrupt the decoding process at any point in the bil stream and still reconstruct the image. Therefore a compression scheme generating an embedded code can start sending over the network the coarser version of the image first and continues with the progressive transmission of the refinement details. Experimental results show that our method can get a perfect performance in compression ratio and reconstructive image.

Linear-response study of plasmon excitation in metallic thin films: Layer-dependent hybridization and dispersion 期刊论文 OAI收割
PHYSICAL REVIEW B, 2006, 卷号: 73, 期号: 15
Yuan, Z; Gao, SW

收藏 | 浏览/下载：30/0 | 提交时间：2013/09/18

QUANTUM-WELL STATES ELECTRONIC EXCITATIONS SURFACE-PLASMONS DENSITY ENERGY MODES PHOTOABSORPTION PHOTOEMISSION NANOPARTICLE SYSTEMS

Packaging technology of polymer/Si arrayed waveguide grating and their environmental stability (EI CONFERENCE) 会议论文 OAI收割
2005 6th International Conference on Electronics Packaging Technology, August 30, 2005 - September 2, 2005, Dameisha, Shenzhen, China
作者: Zhang Y.; Zhang X.; Zhang X.; Zhang X.; Wang F.

收藏 | 浏览/下载：33/0 | 提交时间：2013/03/25

Future optical communication systems will use more of the exceptional high bandwidth of optical fiber. Wavelength division multiplexing (WDM) systems are well suited to transport terabits of information via the fiber[1]. Multiplexers/ demultiplexers (MUX/DEMUX) are essential components for dense WDM systems. Several different kinds of multiplexer types have been developed in the past: (a) interference filters (b) fiber gratings and (c) planar lightwave circuit (PLC) MUX/DEMUXers[2 3]. The planar fabrication process of the last mentioned PLCs allows the realization of high performance filters with a large number of wavelength channels. Further an integration with other optical elements seems to be possible. Arrayed waveguide gratings (AWG) are a special kind of PLC-MUX/DEMUXers which are very attractive components for WDM systems because of their great flexibility in filter design[4 5]. Basically an AWG is an optical spectrograph built in planar waveguide technique. Typically AWGs works in a high grating order (50-250). For AWG multiplexer applications in communications systems a precise wavelength controllability and wavelength stability with long term is demanded. Recently a polymeric (especially fluorinated polymer with low optical absorption loss in the infrared region) AWG has attracted much attention because of its easy fabrication low cost possibility and a potential of integration with other polymer devices[6]. Standard AWGs however show a change of center wavelength with temperature. A method to prevent this temperature drift is to package the AWG together with a temperature controller in order to tune and fix the desired filter-wavelength. In this paper a 32-channel AWG was fabricated using a cross-linkable fluorinated poly (ether ether ketone) (FPEEK) its package technology and environmental stability were also discussed. 2005 IEEE.