利用正交试验确定钒渣焙烧的最佳工艺条件

介绍了钒分厂利用正交试验法进行试验方案的设计及试验结果的直观分析，确定出钒渣烙烧的最佳工艺条件是：钒渣粒径小于0．12mm，烙烧气中氧气体积分数大于10％，焙烧温度850℃，烙烧时间60min，碱比(碱与钒渣质量比)16％，盐比(盐与钒渣质量比)5％，从而改变了以往在生产和转渣时组织生产的被动局面，为公司创造了可观的经济与社会效益。     

茨21-133井CO2吞吐技术初步试验

茨榆坨油田茨13块原油属于普通稠油，1993年开始蒸汽吞吐采油，从第二轮开始效果明显变差，注汽返排率低，有效周期短，产量下降快，套管变形井增多。针对这些问题，在该区块茨21—133井进行CO2吞吐采油工艺现场试验，获得成功，增油效果明显。     

天然气管道燃压机组的性能试验及见证

结合西气东输管道工程燃气轮机驱动压缩机组设备订货及验收中对性能试验项目的确定、工厂试验及见证过程,介绍了燃压机组性能试验项目所涉及的主要内容、执行标准、需要达到的技术指标,各种性能试验的基本情况,买方参加工厂试验见证中需要重点处理好的问题等。以期为我国其他大型长输天然气管道机组订货及试验见证工作提供借鉴。     

Numerical simulation of substrate effects on spinodal decomposition in polymer binary mixture: Effects of the surface potential

The surface-directed spinodal decomposition (SDSD) of polymer binary mixture with different values of surface potential is numerically simulated in three-dimension (3D) by cell dynamic systems (CDS). Furthermore, the growth laws of the wetting layer are theoretically analyzed by the current equation and the dynamical scaling. The results show that the thickness of the wetting layer increases with the increasing surface potential. The crossover, which is later for larger values of surface potential, appears in the evolution curve of the wetting layer. Before the crossover, the growth law is the surface potential dependant growth law. Subsequently, the growth law is the typical Lifshitz-Slyozov (LS) growth law. The results indicate that the surface potential can result in the mutual transformation between completely wetting and partially wetting for the substrate interface. It can be found that the higher surface potential leads to the faster and stronger transmission of the effect of the substrate on the spinodal decomposition in the bulk.     

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研究燃料汽车及其氢源系统是当今国内外能源工业与汽车工业的共同课题，而优选制氢能源则是这一课题的关键。章介绍了利用能源、经济、环境(EEE)——生命周期评估(LCA)这一综合评估方法，针对以天然气、煤或石油作为制氢能源的多种燃料电池氢源供应方式以及配套的燃料电池汽车系统，从经济性、能源利用效率和环境影响三个方面进行了生命周期清单分析和EEE综合评价。结果显示：天然气作为发展燃料电池汽车氢源的一次能源，具有氢制取技术路线多样化、经济上竞争力强、能源利用效率高和环境效益好等诸多优势，应为燃料电池汽车的首选制氢能源。对这一评估模型的敏感性分析显示，即使在天然气价格波动较大时，天然气制甲醇--甲醇车载重整车和天然气制氢--纯氢车这两个方案仍然最具优势。     

热焊弯管用钢板工艺探讨

在统计分析、正交多项式回归和模拟试验的基础上，建立了高精度的屈强比预报模型，并运用多元函数极值原理，求导极值点及相应的工艺参数，为优化工艺制度，提高热焊弯管用钢(L360-WG系列)性能合格率提供了定量依据。     

SDH光通信设备工程测试

结合实际介绍了SDH光通信设备工程测试项目和测试方法，及相关的技术指标，包括平均发送光功率测试、接收机灵敏度测试、接收机过载功率测试、误码测试、抖动和漂移测试、定时同步测试、保护倒换测试、开销和维护信号测试、网管功能测试等。     

Effects of different cooking methods on the formation of food mutagens in meat

Hamburgers and chicken fillets were cooked in convection ovens, deep‐fried or contact fried and analysed for mutagenic activity using the Ames test. For the three different convection ovens, the cooking parameters studied included the presence of steam, air velocity, air temperature and holding time. For deep‐frying and contact frying, the cooking parameters included cooking temperature and cooking time. In cooked hamburgers, mutagenic activity was only detected in those that had been deep‐fried. In chicken fillets, mutagenic activity was detected in samples prepared with all cooking methods, being highest in the deep‐fried samples. Factorial analysis indicated that heat transfer was the most important factor affecting mutagenic activity. High temperature and high air velocity in the convection ovens enhanced mutagenic activity. The presence of steam reduced the mutagenic activity, except when high temperature was used in combination with high air velocity. In chicken fillets, high mutagenic activity correlated to high weight loss during cooking. Pan‐fried chicken fillets were analysed using high performance liquid chromatography (HPLC) and the mutagenic/carcinogenic heterocyclic amines 2‐amino‐3,8‐dimethylimidazo[4,5‐f ]‐quinoxaline (MeIQx), 2‐amino‐1‐methyl‐6‐phenylimidazo‐[4,5‐b]‐pyridine (PhIP) and the co‐mutagenic heterocyclic amine Norharman (9H‐pyrido[3,4‐b]‐indole) were identified. The HPLC fractions were tested for mutagenic activity and, apart from the mutagenic fractions corresponding to MeIQx and PhIP, several mutagenic fractions were detected that did not correspond to known heterocyclic amines.     

WDB620高强钢应用于大型蜗壳的焊接制造工艺研究

2005年初,水电十四局承担了漫湾二期水电站和小湾水电站蜗壳的制造任务。蜗壳钢材选用国产600 MPa级别高强钢,为了全面综合地考核该级别钢种的材料强度和安全裕度,检验模拟大型蜗壳焊接制造工艺的可靠性。对国产的WDB620高强钢进行了可焊性和制造工艺性试验研究,并在国内首次设计、制造模拟压力容器并对其进行水压试验和爆破试验。研究成果通过中国水电集团公司鉴定,结论为该课题研究成果达到国内选进水平。     

基于LabWindows/CVI的多线程测控软件设计技术

多线程技术是W in32操作系统的一项重要软件技术。CVI 6.0及其以后版本提供了线程池和异步定时器两种多线程运行机制,为测控软件的设计开发带来了一次技术飞跃。文中结合测控软件设计实例,详细介绍了在CVI平台下多线程编程技术的应用方法。