Pullback Attractors for Stochastic Young Differential Delay Equations

We study the asymptotic dynamics of stochastic Young differential delay equations under the regular assumptions on Lipschitz continuity of the coefficient functions. Our main results show that, if there is a linear part in the drift term which has no delay factor and has eigenvalues of negative real parts, then the generated random dynamical system possesses a random pullback attractor provided that the Lipschitz coefficients of the remaining parts are small.

     

Simultaneous Determination of Multicomponents in Air Toxic Organic Compounds Using Artificial Neural Networks in Ftir Spectroscopy

The application of Artificial Neural Networks (ANNs) for nonlinear multivariate calibration using simulated FTIR data was demonstrated in this paper. Neural networks consisting of three layers of nodes were trained by using the back-propagation learning rule. Since parameters affect the performance of the network greatly, simulated data were used to train the network in order to get a satisfactory combination of all parameters. The mixtures of four air toxic organic compounds whose FTIR spectra are overlapped were chosen to evaluate the calibration and prediction ability of the network. The relative standard error (RSD%), the percent standard error of prediction samples (%SEP) and the percent standard error of calibration samples (%SEC) are used for evaluating the ability of the neural network.     

The growth temperatures dependence of optical and electrical properties of InN films

InN films grown on sapphire at different substrate temperatures from 550°C to 700°C by metalorganic chemical vapor deposition were investigated. The low-temperature GaN nucleation layer with high-temperature annealing (1100°C) was used as a buffer for main InN layer growth. X-ray diffraction and Raman scattering measurements reveal that the quality of InN films can be improved by increasing the growth temperature to 600°C. Further high substrate temperatures may promote the thermal decomposition of InN films and result in poor crystallinity and surface morphology. The photoluminescence and Hall measurements were employed to characterize the optical and electrical properties of InN films, which also indicates strong growth temperature dependence. The InN films grown at temperature of 600°C show not only a high mobility with low carrier concentration, but also a strong infrared emission band located around 0.7 eV. For a 600 nm thick InN film grown at 600°C, the Hall mobility achieves up to 938 cm²/Vs with electron concentration of 3.9 × 10¹⁸ cm⁻³. Supported by the National Basic Research Program of China (Grant No. 2006CB6049), the National Natural Science Foundation of China (Grant Nos. 6039072, 60476030 and 60421003), the Great Fund of the Ministry of Education of China (Grant No. 10416), the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20050284004), and the Natural Science Foundation of Jiangsu Province of China (Grant Nos. BK2005210 and BK2006126)     

High selectivity of oxidative dehydrogenation of ethane to ethylene in an oxygen permeable membrane reactor

An oxygen permeable membrane based on Ba0.5Sr0.5Co0.8Fe0.2O3-delta is used to supply lattice oxide continuously for oxidative dehydrogenation of ethane to ethylene with selectivity as high as 90% at 650 degrees C.     

黑色素对流感病毒诱导细胞凋亡的抑制效应

用荧光染色技术及流式细胞仪分析方法研究了 Ａ１／京防８６１ 和 Ｂ／沪防９３１ 两株流感病毒感染与细胞凋亡的关系,探讨利用嗜麦芽假单胞菌黑色素抑制流感病毒诱导 Ｍ Ｄ Ｃ Ｋ 细胞凋亡的可能性 结果显示：黑色素在 １００ ｍ ｇ· Ｌ－ １ 浓度范围内,对 Ｍ Ｄ Ｃ Ｋ 细胞无细胞毒性; Ａ１／京防 ８６１ 和 Ｂ／沪防 ９３１ 两株流感病毒均可诱导 Ｍ Ｄ Ｃ Ｋ细胞凋亡,但二者存在毒力差异（ｐ＜ ０．０５）病毒感染１２ ｈ 后,荧光染色可观察到典型的凋亡核形态,流式细胞仪则可检测到病毒诱导 Ｍ Ｄ Ｃ Ｋ 细胞产生的凋亡峰,且细胞凋亡率分别为３７．０２％ 和 ２７２９％ ;２０ ｍ ｇ· Ｌ－ １ 的黑色素可有效抑制两株流感病毒诱导细胞凋亡,使细胞凋亡指数从２５％ ～３５％ 降至３％ 以下 结果表明,黑色素可以抑制 Ａ 和 Ｂ型流感病毒诱导细胞凋亡     

微波作用下（2E）－α，β－不饱腈的立体选择合成

微波照射下氰基亚甲基膦叶立德和芳醛可顺利发生Ｗｉｔｔｉｇ反应，反应具有反应时间短，立体选择性高的特点，以较高产率生成（２Ｅ）－α，β－不饱和腈．     

微通道板表面发雾的AES分析

应用俄歇电子能谱对微通道板表面发雾区域进行分析。分析结果表明,发雾区碳含量比正常区高三倍。由此可推测出,发雾是由碳污染引起的,而这种碳污染很可能是残留于微通道板上的某些有机物在烧氢时碳化所致。     

Luminescent Tb3+ complex with pendant crown ether showing dual-component recognition of H+ and K+ at multiple pH windows

[structure: see text] A lanthanide luminescent probe that was functionalized with quinoline-alkylated diaza-18-crown-6 showed dual-component recognition of concentrations of H+ and K+ at four independent pH ranges, including in the physiological pH window. Moreover, it exhibited pH- and [K+]-independent long-lived lanthanide luminescent lifetimes in aqueous solution.