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91.
92.
Daryl Geller Domenico Marinucci 《Journal of Mathematical Analysis and Applications》2011,375(2):610-630
The construction of needlet-type wavelets on sections of the spin line bundles over the sphere has been recently addressed in Geller and Marinucci (2008) [14], and Geller et al. (2008, 2009) [12] and [13]. Here we focus on an alternative proposal for needlets on this spin line bundle, in which needlet coefficients arise from the usual, rather than the spin, spherical harmonics, as in the previous constructions. We label this system mixed needlets and investigate in full their properties, including localization, the exact tight frame characterization, reconstruction formula, decomposition of functional spaces, and asymptotic uncorrelation in the stochastic case. We outline astrophysical applications. 相似文献
93.
ZHENG Qiang ZHANG Xiao-Ping REN Zhong-Zhou 《理论物理通讯》2008,50(12):1283-1286
Using the mapping method based on q-deformed hyperbolic functions, the exact solutions of generalized Breor-Kaup equations are obtained. Based on the solutions, two coherent structures, periodic-branch kink and nonpropagating kink, have been obtained. Moreover, one solitonal interaction form, two line solitons interaction on the kink background, has been found. 相似文献
94.
阐述了立体显示的原理,着重介绍了处于研究热点的光学板遮挡、体积型立体显示和电子全息立体显示技术的原理及其技术发展状况. 相似文献
95.
Kernel based visual tracking with scale invariant features 总被引:1,自引:0,他引:1
96.
根据大气辐射特征进行目标探测的波段选择 总被引:18,自引:5,他引:13
介绍了通过大气光谱特征分析对大气层外目标进行探测的波段选择方法。在考虑目标本身辐射强度、背景大气的辐射强度、目标背景对比度、斜程大气透过率以及探测器的响应特性诸因素后进行波段选择。从而提高对目标的鉴别性能。选择中纬度夏季白天、无云城市气溶胶模式、春夏季气溶胶廓线以及背景平流层廓线和消光的大气条件,利用辐射传输计算软件MODTRAN计算了目标背景亮度、对比度以及透过率的典型光谱特征,并进行光谱特征分析,然后在其他大气模式下对所选波段进行了验证,从而选择出目标探测的最优波段。 相似文献
97.
Composition assessment of ferric oxide by accurate peak fitting of the Fe 2p photoemission spectrum
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M. Bravo Sanchez J. A. Huerta‐Ruelas D. Cabrera‐German A. Herrera‐Gomez 《Surface and interface analysis : SIA》2017,49(4):253-260
A quantitative study of the surface composition of ferric oxide employing photoemission spectra is presented. It was possible to accurately reproduce the expected composition (Fe2.00±0.05O3) by modeling the background as a combination of Shirley‐type (Shirley–Vegh–Salvi–Castle) and slope backgrounds through the active approach. The line‐shape employed to fit apparent peak asymmetries was the double‐Lorentzian. It was possible to resolve a previously unreported satellite located at ~729 eV. Copyright © 2016 John Wiley & Sons, Ltd. 相似文献
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99.
在石墨炉原子吸收光谱法测定血样中铅时,采用动态三磁场塞曼背景校正技术,使血样中铅测定的线性范围由0~100μg.L-1扩增到0~800μg.L-1。动态模式下,质量浓度在80μg.L-1范围以内选择二磁场背景校正模式,特征量为29.4pg。在80~800μg.L-1范围内选择三磁场背景校正模式,特征量为10.7pg。应用此法测定高浓度铅的样品时无需稀释,同时解决了高浓度样品测定时出现塞曼反转,及吸收信号出现双峰的问题。 相似文献
100.
Diabetes, a multifunctional disease and a major cause of morbidity and mortality in the industrialized countries, strongly associates with the development and progression of atherosclerosis. One of the consequences of high level of glucose in the blood circulation is glycation of long-lived proteins, such as collagen I, the most abundant component of the extracellular matrix (ECM) in the arterial wall. Glycation is a long-lasting process that involves the reaction between a carbonyl group of the sugar and an amino group of the protein, usually a lysine residue. This reaction generates an Amadori product that may evolve in advanced glycation end products (AGEs). AGEs, as reactive molecules, can provoke cross-linking of collagen I fibrils. Since binding of low-density lipoproteins (LDLs) to the ECM of the inner layer of the arterial wall, the intima, has been implicated to be involved in the onset of the development of an atherosclerotic plaque, collagen modifications, which can affect the affinity of native and oxidized LDL for collagen I, can promote the entrapment of LDLs in the intima and accelerate the progression of atherosclerosis.In this study, open tubular capillary electrochromatography is proposed as a new microreactor to study in situ glycation of collagen I. The kinetics of glycation was first investigated in a fused silica collagen I-coated capillary. Dimethyl sulphoxide, injected as an electroosmotic flow marker, gave information about the charge of coating. Native and oxidized LDL, and selected peptide fragments from apolipoprotein B-100, the protein covering LDL particles, were injected as marker compounds to clarify the interactions between LDLs and the glycated collagen I coating. The method proposed is simple and inexpensive, since only small amounts of collagen and LDL are required. Atomic force microscopy images complemented our studies, highlighting the difference between unmodified and glycated collagen I surfaces. 相似文献