bridge the gap between software test process and business value: a case study

Chinese Academy of Sciences (ISCAS)

automated test program generation for an industrial optimizing compiler

Association for Computing Machinery, ACM; IEEE; IEEE Computer Society; SIGSOFT

A novel nanometer-scale "gold electrode-molecular wires-silver" junction: An efficient test bed for electrochemical investigation of electron transportation through molecular wires in self-assembled monolayers

A novel "gold electrode-molecular wires-silver" junction was facilely fabricated for electrochemical study on the electron transportation through molecular wires. Rapid electron transportation through this sandwich-like structure was indeed observed by cyclic voltammograms and ac impedance measurements. Since rather reproducible and reliable results are easily available by electrochemical techniques, it would be an efficient and reliable test bed for electrochemical investigation of charge transportation through molecular wires in self-assembled monolayers on electrodes.

ESR数据系统的研制

报道了电子自旋磁共振谱仪与ＩＢＭＰＣ微型机联用，建立了所需要的硬件系统，包括接口和放大器，研制了分辨率为１２位的ＡＤ／ＤＡ转换器，达到同步采样控制，并实现了Ｘ－Ｙ记录仪，示波器，绘图仪与打印机的输出，同时系统软件配有信号采样、信号累加、信号平滑、谱线加减、测量ｇ因子及Ａ值，ＥＳＲ谱的一、二次积分等一系列数据处理程序，还具有谱线模拟、线形分析等一些应用软件，对于谱的定量和解析极为方便，大大提高了谱仪的功能.

ESR approach to free radicals trapped in irradiated polyamide-1010

Two types of macromolecular free radicals similar to CH2CONH(C) over dotHCH(2) similar to (a) and similar to CH2(C) over dot = O (b) trapped in irradiated polyamide-1010 (PA1010) and PA1010 filled with neodymium oxide (Nd2O3) were characterized by an ESR approach. It is found that (a) is prevailingly trapped in the fold surface of the lamellae and (b) in the amorphous phase. This result suggests that trapped radicals mainly exist in the non-crystalline phases. The effect of the fold surface area of the lamellae on the behavior of the trapped radicals is discussed in this paper. Whether for the specimens with similar crystallinities, but different crystallite sizes, or for those with the same concentration of neodymium oxide, but different crystallinities, radical (a) exists dominantly in the specimen with a larger fold surface area of the lamellae. Under certain circumstances, radical (a) can transform into radical (b), obviously for a specimen with a larger fold surface area of the lamellae. It means that the fold surface area of the lamellae plays an important role in the transformation of radical (a) to (b). (C) 1997 Elsevier Science Ltd.

An ESR study on (OH)-O-center dot-radical scavenging activity of water-soluble fullerenols

Water-soluble polyhydroxylated fullerene derivatives (fullerenol) were synthesized, and their scavenging ability for (OH)-O-.-radical was studied by the combination of ESR spectroscopy and spin-trapping technique with phenyl-t-butyl-nitrone. It was found that fullerenols showed an excellent efficiency in eliminating (OH)-O-. free radicals generated by UV photolysis of H2O2. At an applied fullerenol concentration of 0, 3 mg/mL in the final solution, a radical scavenging efficiency of approximate 95% was achieved, revealing the potential use of these compounds as novel potent free radical scavengers in biological systems.

Synthesis and extraction of lanthanofullerenes and its DEIMS, ESR characterizations

The synthesis for lanthanofullerenes was studied by activating the La2O3 containing graphite rod in situ and back-burning the carbide-rich cathode deposite, La@C-2n are efficiently extracted in high temperature toluene, among them, La@C-74 as a new species is added into the soluble lanthanofullerenes, The toluene extraction is first characterized by desorption electron impact (DEI) mass spectrometry, The ESR spectrum of the extraction at room temperature is also discussed.

金属富勒烯La＠C_（2n）的合成、提取及其ESR和MS表征

采用对掺入Ｌａ_２Ｏ_３的石墨棒原位活化并结合交换电极回放方法制备了产率较高的金属富勒烯，并用甲苯高温热提取的方法有效地提取出Ｌａ＠Ｃ_（２ｎ），其中Ｌａ＠Ｃ_（７４）为可溶性金属富勒烯增加了新成员．同时，首次采用解吸电子轰击质谱对提取物进行了表征，讨论了提取物的ＥＳＲ谱．

富勒醇清除·OH自由基的ESR研究

富勒醇清除·ＯＨ自由基的ＥＳＲ研究祝严师，孙大勇，刘桂珍，刘子阳，詹瑞云，刘淑莹（中国科学院长春应用化学研究所应用谱学开放实验室，长春，１３００２２）关键词Ｃ_（６０），富勒醇，ＯＨ自由基，自旋捕捉，ＥＳＲ生物体内的许多现象均涉及到自由基反应，现已发?..

导电聚合物膜修饰电极的研究 Ⅲ.杂多酸掺杂聚吡咯膜电极的电子自旋共振(ESR)特性研究

本文通过对不同条件下的Co(W_2O_7)_6~(10-)和CuW_(12)O_(40)~(6-)掺杂聚吡膜ESR谱线的分析并以相同条件下NO_3~-掺杂聚吡咯膜作为参照,表明杂聚阴离子不仅起着中和电性的作用,而且与聚吡咯分子链相作用形成某种加合物,它影响聚吡咯的电结构,这种加合物在过正或过负的电位下均不稳定.首次发现在CuW_(12)O_(40)~(6-)掺杂的干态聚吡咯膜具有Dysonian线型,表明膜中其它电结构的存在.

活体心肌缺血再灌自由基产生和清除的ESR研究

ＥＳＲ和自旅捕捉技术用于研究活体动物犬心肌缺血再灌产生的自由基，ＰＢＮ从冠状静脉血液中捕捉到了ＯＨ自由基，直接地证实了缺血再灌细胞膜损伤的活性氧自由基作用机制；实验还看到一种甾体皂甙药物具有保护心肌细胞．防止自由基损伤的功能．