测试稿件

复杂网络理论是时间序列分析中一种有力的工具。但在面对高频数据时,现有建网方法是低效的。因此,提出利用时间序列符号化技术压缩原始序列,并构造网络的方法。该方法使用最小二乘估计时序分段斜率,提取序列的局部特征,并构造字典判断节点是否邻接。模拟试验表明,所建网络的标度指数、集群系数与过程的Hurst指数高度相关,可以精确地捕捉原过程的复杂性特征     

利用客户端脚本实现复合查询的新思路

本文主要针对目前网站上常用的查询系统所存在的某些常见问题而提出了一种新的查询设计思路,这种新的设计思路主要是在客户端利用JavaScript脚本语言对用户设置的查询条件进行预处理,让用户设置的条件以两种形式出现在系统中,一种形式方便方便用户阅读和理解,另一种形式用于真正的数据查询;此外,通过脚本语言将用户设置的查询条件保存于页面上列表中,用户可以随意组合现有的条件形成更为复杂的查询条件;同时用户也可以在列表中随意选择某个条件执行数据查询。     

On the rate of heterogeneous catalytic reactions with ionic intermediates

A facile way to compute the rate law of a catalytic reaction with ionic intermediates is proposed, based on the theory of complex reactions. When the ionic nature of intermediates is taken into account it is necessary to add balance equations which correspond to the electroneutrality of the catalyst. Several mechanisms of the olefin hydrogenation were considered as examples.     

Some quadrature formulas for functions partially holomorphic with respect to each variable in a Jordan polydomain in C 2 and a complex double integral formula

In this paper, quadrature formulas with remaining term in integral form for functions partially holomorphic with respect to each variable in a Jordan polydomain in C ² and a complex double integral formula are given. For this, we used the Cauchy Integral formula for Jordan polydomain in C ².     

复合催化法合成对硫磷

研究了以三甲胺作亲核催化剂、季铵盐A作相转移催化剂、水和极性有机溶剂B作双溶剂、亲核—相转移复合催化法合成对硫磷的方法,收率可达99％。     

2—氨基—4—甲氧基—6—甲基均三嗪的合成

着重介绍了2-氨基-4-甲氧基-6-甲基均三嗪的合成方法。     

Near-infrared photodetection with a diruthenium complex having redox-switchable wavelength response

We report on the electrochromic behavior of a dinuclear ruthenium complex, which provides high environmental stability together with an intense absorption maximum at 1237 nm in solution in its +3 oxidation state. To verify its optoelectronic properties, we used this complex as the photoactive material in a planar photodetector prototype for near-infrared light pulses, succeeding in the detection of a train of light pulses at a wavelength of 1280 nm.     

Iterative ultrasonic signal and image deconvolution for estimation of the complex medium response

The ill‐conditioned inverse problem of estimating ultrasonic medium responses by deconvolution of RF signals is investigated. The primary difference between the proposed method and others is that the medium response function is assumed to be complex‐valued rather than restricted to being real‐valued. Derived from the complex medium model, complex Wiener filtering is presented, and a Hilbert transform related limitation to inverse filtering type methods is discussed. We introduce a nonparametric iterative algorithm, the least squares method with point count regularization (LSPC). The algorithm is successfully applied to simulated and experimental data and demonstrates the capability of recovering both the real and imaginary parts of the medium response. The simulation results indicate that the LSPC method can outperform Wiener filters and improve the resolution of the ultrasound system by factors as high as 3.7. Experimental results using a single element transducer and a conventional medical ultrasound system with a linear array transducer show that despite the errors in pulse estimation and the noise in the RF signals, excellent results can be obtained, demonstrating the stability and robustness of the algorithm. © 2006 Wiley Periodicals, Inc. Int J Imaging Syst Technol, 15, 266–277, 2005     

99Tcm标记的邻甲硫基-N-β-巯基乙酰苯胺和硫醇混配复合物的制备及生物分布研究

合成了新的三配位体邻甲硫基-N-β-巯基乙酰苯胺(MTPMA),其结构经红外光谱(IR)、核磁共振(1HNMR)、质谱(MS(FAB+))和元素分析确认.用配体交换方法制备了两种混合配位体复合物99Tcm(L3,L1a)和99Tcm(L3,L1b).其中,L3为三配位体,L1a、L1b分别为单配位体乙硫醇和异丙硫醇.确定了这两种混配复合物的最佳标记条件,在此条件下,放射化学纯度(RCP )＞90%,并且在室温下稳定6 h以上.99Tcm(L3,L1a)和99Tcm(L3,L1b)的小鼠生物分布研究表明两种混配复合物都可通过正常的血脑屏障,并在脑中有一定滞留.     

云南禄丰鸡街碱性超基性岩杂岩体的成因

在研究鸡街碱性超基性岩杂岩体岩石学和地球化学已有资料基础上，认为本区霞霓钠辉岩平均成分加１０％，Ｆ０＝８６的橄榄石可作为杂岩体的原始岩浆，Ｐ２Ｏ５估算出这种岩浆为地幔岩经约３％部分熔融的产物；岩石学混合模拟计算表明，地幔源岩具有明显亏损特征；原始霞霓钠辉岩岩浆经约２９．６％结晶分异形成霓霞岩，霓霞岩岩浆再经约４７．２％结晶分异形成磷霞岩。由此建立起杂岩体的成因模式。