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111.
A class of stochastic linear complementarity problems (SLCPs) with finitely many realizations is considered. We first formulate the problem as a new constrained minimization problem. Then, we propose a feasible semismooth Newton method which yields a stationary point of the constrained minimization problem. We study the condition for the level set of the objective function to be bounded. As a result, the condition for the solution set of the constrained minimization problem is obtained. The global and quadratic convergence of the proposed method is proved under certain assumptions. Preliminary numerical results show that this method yields a reasonable solution with high safety and within a small number of iterations. 相似文献
112.
A simple one-step in situ “click” modification strategy was developed for the preparation of hydrophobic organic monolithic columns for the first time. The column morphology and surface chemistry of the fabricated monolithic columns were characterized by scanning electron microscopy, Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy, respectively. The chromatographic performances of the C8/C18 “click” monoliths were evaluated through the separation of a mixture of five proteins such as ribonuclease A, soybean trypsin inhibitor, cytochrome c, bovine haemoglobin and bovine serum albumin. Compared with the blank column, the higher hydrophobicity stationary phases obtained from the “clicked” modification have longer retention times and higher resolution for the five proteins. The separation of five proteins mixture on click C18 monolith with gradient elution at different flow rates was also investigated, the baseline separation of five proteins could be achieved at three different flow rates. 相似文献
113.
A comparison of the fire retardancy of poly(methyl methacrylate) using montmorillonite, layered double hydroxide and kaolinite 总被引:3,自引:0,他引:3
Montmorillonite, layered double hydroxide and kaolinite, have been used to make (nano)composites with poly(methyl methacrylate). X-ray diffraction and transmission electron microscopy were used to characterize the morphology and the thermal stability and fire properties have been studied by thermogravimetric analysis and cone calorimetry. The results show that LDH and MMT are better dispersed in PMMA than is kaolinite; the MMT layers have a higher aspect ratio than does the LDH. PMMA + MMT and PMMA + LDH composites have higher thermal stability than PMMA + kaolinite composite. The peak of heat release rate reduction is 55% for the PMMA + MMT composite at 10%, 45% for PMMA + LDH and 23% for PMMA-kaolinite. 相似文献
114.
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116.
This paper focuses on the identification problem of Hammerstein systems with dual-rate sampling. Using the key-term separation principle, we derive a regression identification model with different input updating and output sampling rates. To solve the identification problem of the dual-rate Hammerstein systems with the unmeasurable variables in the information vector, an auxiliary model-based recursive least squares algorithm is presented by replacing the unmeasurable variables with their corresponding recursive estimates. Convergence properties of the algorithm are analyzed. Simulation results show that the proposed algorithm can estimate the parameters of a class of nonlinear systems. 相似文献
117.
本文研究了遥感用干涉成象光谱仪的象移补偿问题,通过实验和理论推导得出了干涉成象光谱仪在获得空间和光谱信息两种情况下对象移量的要求,认为在使用线阵探测器时可以不采用象移补偿技术,而在使用面阵探测器时应根据逐行推扫或逐帧推扫方式来确定是否是采用家移补偿. 相似文献
118.
空间调制干涉成像光谱技术 总被引:59,自引:11,他引:48
介绍空间调制干涉成像光谱技术,提出基于实体迈克尔干涉仪的空间调制干涉成像光谱仪,推导了这种仪器的基本几何参数公式与主要误差容限计算公式,总结了其主要特点。文中还归纳出高通量大视场干涉仪原理模型。 相似文献
119.
C. Chen Peiqun Zhang Xiangli Lu Xiaolin Hou Zhifang Chai 《Analytical and bioanalytical chemistry》1999,363(5-6):512-516
The elemental concentrations and chemical species of Al, Br, Cl, Cu, K, Mg, Mn, Na and I in human liver and its subcellular
fractions were studied by several biochemical techniques combined with neutron activation analysis. The highest concentrations
of Al, Mg, and I were found in the nuclei, whereas those of Br, Cu, Cl, K, Mn and Na in the cytosol. About 20% of Br, half
of Al and most of Cu (78.8%), Mg (65.9%) and Mn (80.6%) remained in the cellulose bags after dialysis of liver homogenate,
which were suggested to be bound to macromolecules. K (100%) and more than 95% of Cl and Na were found to be in the dialyzates.
Similar results were found in the fractions of nuclei, mitochondria, lysosome and microsome, respectively, after the same
treatment. Further study was carried out to elucidate the elemental distribution in the cytosol by ethanol precipitation and
by ammonium sulfate fractionation. The results suggested that several kinds of Cu-, Mn- and Mg-bound proteins existed in the
cytosol of human liver cells.
Received: 3 August 1998 / Revised: 22 September 1998 / Accepted: 26 September 1998 相似文献
120.
A novel laccase with inhibitory activity towards HIV‐I reverse transcriptase and antiproliferative effects on tumor cells from the fermentation broth of mushroom Pleurotus cornucopiae 下载免费PDF全文
Xiangli Wu Chenyang Huang Qiang Chen Hexiang Wang Jinxia Zhang 《Biomedical chromatography : BMC》2014,28(4):548-553