Preparation of multi-compositional gas sensing films by combinatorial solution deposition

Various compositions of gas sensing films were prepared by the combinatorial deposition of SnO₂, ZnO, and WO₃ sol solutions and their gas sensing behaviors were investigated. The film composition could be manipulated conveniently via the alternate dropping of different oxide sol solutions. From the correlation between film compositions and gas sensitivities, the selective detection of C₂H₅OH and CH₃COCH₃ in the presence of CO, C₃H₈, H₂, and NO₂ could be attained. In addition, the discrimination between C₂H₅OH and CH₃COCH₃, which is a challenging issue due to their similar chemical nature, becomes possible. This research demonstrates the precise design of the sensor-material composition for the selective gas detection via the combinatorial approach.     

（E）-2-壬烯酸合成方法的改进

(E)-2-壬烯酸是有机合成的一种重要中间体,我们利用Knoevenagel反应机理,改进了(E)-2-壬烯酸的合成工艺,在不使用脱水剂条件下,使用少量吡啶作催化剂,获得了83%的反应收率。     

Bruce E. Wampold: Award for Distinguished Professional Contributions to Applied Research.

Presents the citation, biography, and selected bibliography for Bruce E. Wampold, the 2007 recipient of the American Psychological Association's Award for Distinguished Professional Contributions to Applied Research. Also presented is an article based on the author's award address delivered at the APA's 115th annual meeting, held August 17-20, 2007, in San Francisco, California. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

一种E1与V.35信号转换的实现方法

E1 是我国和欧洲电信传输网一次群使用的传输标准，V.35 是我国数字数据网使用较多的一种接口标准。本文给出由DS2155 和DS2175 等芯片实现E1 接口与V.35 接口转换的方法。     

Pressure infiltration of boron nitride preforms with molten aluminum

The infiltration of compacted cubic BN (cBN) with molten aluminum has been investigated as a potential route for a cheap and easy method of manufacturing cBN/metal composites. CBN compacts have been infiltrated with molten Al at a temperature between 670 and 800 °C and pressure of 15 MPa in vacuum. At these temperatures no pronounced interactions between hexagonal and cubic BN with Al was observed, allowing the complete infiltration of cBN with 12 μm mean grain size. After infiltration at 800 °C, the temperature was increased without pressure to convert aluminum into borides and AlN. The hardness of the resulting materials depends on the content of hexagonal, cubic BN and the rate of conversion of Al into borides and AlN. The infiltration height of less than 1 mm obtained from infiltrating the 3 μm cBN powder green compacts gave a hardness of 22.0 ± 0.6 GPa after heat treatment.     

基于Pro/Engineer的标准件库建立技术

通过应用实例，简要介绍了在Pro／Engineer环境下，利用其二次开发工具族表(Family Table)和程序(Program)建立标准件库的方法和技巧。     

Olfactory recognition of nonhosts aspen and birch by conifer bark beetlesTomicus piniperda andHylurgops palliatus

The field response ofTomicus piniperda (L.) andHylurgops palliatus (Gyll.) (Coleoptera: Scolytidae) to the attractant ethanol in combination with volatile wood constituents released from the nonhost tree speciesPopulus tremula L. (Salicaceae) andBetula pendula Roth (Betulaceae) was studied using flight barrier traps. The attraction of both species decreased when aspen or birch wood was added to the ethanol bait. The same was true forRhizophagus depressus (F.) (Coleoptera: Rhizophagidae), a predatory species associated with conifer bark beetles.Glischrochilus quadripunctatus (L-),Epuraea bickhardti St.-Claire Deville,E. unicolor (Oliv.) (Coleoptera: Nitidulidae), andRhizophagus parvutus (Payk.) (Coleoptera: Rhizophagidae) were caught in higher numbers in traps baited with both ethanol and wood of aspen or birch than in traps baited with ethanol alone. In a separate experiment, landings ofT. piniperda andH. palliatus on nonhosts (black plastic tubes) were demonstrated with sticky traps.     

纳米堵剂在油田超深疑难井封堵上的应用研究

封堵技术是油田“控水稳油”的主导技术之一,在油田开发中应用普遍。然而,近年国内新投入开发的油田中有相当数量的埋藏深、高温、高压、高矿化度、低渗透难开发的油藏,常规封堵剂适应性和安全性差,无法满足现场需求。因此研究开发了一种新型纳米堵剂,并对其性能进行了室内评价。室内评价结果表明,纳米堵剂浆体流变性和注入性能好,初凝时间可调,具有强度高、封堵率高、溶解率高、析水量少且体积不收缩、耐地下高温等特性。现场应用也表明,与油田常用高强度堵剂相比,具有耐高温、高压、高矿化度,强度高和易溶解的优势,且施工安全简便,措施成功率高,是解决超深疑难井堵水的一种新型封堵剂。     

浅谈利用互联网获取纸业信息和发展电子商务

对Internet网（互联网）的产生及发展历程做了简要介绍，并就我国造纸企业开发利用互联网，发展电子商务问题进行了探讨。     

300脚MSA 10 Gbit/s Transponder模块

分析了开发10Gbit/sTransponder模块的必然性，介绍了10Gbit/sTransponder模块的原理、特点和参数指标。并且用开发出的两只40km300脚10Gbit/sTransponder模块成功地进行了43km的无误码传输试验和测试。