PC机加LCNP卡攒成GUS站用于应急的探索

DCS的应用愈来愈普及 ,DCS的发展也越来越接近开放性、通用性。HoneywellTPS系统以其良好的开放性深受用户喜爱。DCS在实际应用过程中 ,由于现场条件等原因 ,出现问题在所难免。在备件一时难以到货的紧急情况下 ,当TPS系统的GUS站硬件出现问题时 ,能否利用GUS站的通用性及开放性 ,用普通PC机加TPS专用LCNP卡 ,攒成GUS站用于应急呢 ?通过理论分析及实践进行了探索并证明是可行的     

酵母人工染色体载体的改造和修饰

将能在植物中表达的烟草花叶病毒ＣａＭＶ３５Ｓ启动子、ＧＵＳ基因、潮霉素（Ｈｙｇｒｏｍｙｃｉｎ）基因及ＭＯＳ终止子组建到酵母人工染色体（ＹＡＣ）载体，构建了具有能在植物细胞中表达和选择ｐＹＡＶ、ＧＵＳ、ｐＪＳ９７／ｐＪＳ９８－ＨＹ ＹＡＣ载体系体系统和一个标记ＹＡＣ克隆的ｐＵＲ４３－ＨＹ质粒。     

黑化改扩建工程全厂一体化控制方案

阐述黑化中氮改扩建项目全厂一体化控制方案的网络构成及实施情况，介绍了Ｈｏｎｅｙｗｅｌｌ公司最新一代ＤＣＳ的主要硬件和软件组成。指出了组态中发现的问题和处理办法。     

烟草发状根的诱导和植株再生

发根农杆菌Ar1334工程菌株与烟草叶片共培养，诱导的根在MS无激素培养基上呈现旺盛的生长态势和典型的发状根结构特点，并在附加0．5mg／mL KT的MS培养基上实现了植株再生。发状根经PCR检测扩增出了500bp的rolC目的片断，组织化学检测也证实了GUS基因在发状根及再生植株叶片中的表达。该体系为利用发状根进行外源基因表达，并通过大量培养进行物质生产奠定了基础。     

Expression Patterns of DNA Methylation and Demethylation Genes during Plant Development and in Response to Phytohormones

DNA methylation and demethylation precisely and effectively modulate gene expression during plant growth and development and in response to stress. However, expression profiles of genes involved in DNA methylation and demethylation during plant development and their responses to phytohormone treatments remain largely unknown. We characterized the spatiotemporal expression patterns of genes involved in de novo methylation, methyl maintenance, and active demethylation in roots, shoots, and reproductive organs using β-glucuronidase (GUS) reporter lines. Promoters of DNA demethylases were generally more highly active at the mature root tissues, whereas the promoters of genes involved in DNA methylation were more highly active at fast-growing root tissues. The promoter activity also implies that methylation status in shoot apex, leaf primordia, floral organs, and developing embryos is under tight equilibrium through the activity of genes involved in DNA methylation and demethylation. The promoter activity of DNA methylation and demethylation-related genes in response to various phytohormone treatments revealed that phytohormones can alter DNA methylation status in specific and redundant ways. Overall, our results illustrate that DNA methylation and demethylation pathways act synergistically and antagonistically in various tissues and in response to phytohormone treatments and point to the existence of hormone-linked methylome regulation mechanisms that may contribute to tissue differentiation and development.     

国产化聚酯分散型控制系统的设计

介绍了江苏仪征化纤股份有限公司涤纶一厂国产化聚酯生产中分散型控制系统的组成结构，软硬件的设计和实施。重点介绍了DCS的全局操作站、局域控制网、高性能过程控制器、网络接口模件的组成结构。     

TPS系统升级改造方案及实施

大连石化公司应用的Honevwell公司TPS系统已经运行10年以上，近年设备逐渐老化，尤其是GUS操作站面临故障频发、备件无法购买的问题。针对这些实际情况，对TPS系统的应用状况进行分析，对系统升级方案进行探讨，重点介绍EPKS—ESVT系统方案的实现及各套方案的优缺点。     

在TPS系统中实现温度串级调节

针对汽提塔温度自动化控制的特点，以Honeywell TPS为例，利用专用模块和TPS丰富的功能，完成汽提塔温度与蒸汽流量的串级调节。     

浅谈TPS系统的应用与维护

文章结合TPS系统在某化工厂的实际应用,简单地描述了控制管理网络TPN和过程控制网络UCN的构成极其在控制上的主要应用,并对维护人员的例行检查内容、常见问题的分析与处理作了进一步的探讨.     

The Gambling Urge Scale: Development, Confirmatory Factor Validation, and Psychometric Properties.

The urge to gamble is a physiological, psychological, or emotional motivational state, often associated with continued gambling. The authors developed and validated the 6-item Gambling Urge Questionnaire (GUS), which was based on the 8-item Alcohol Urge Questionnaire (M. J. Bohn, D. D. Krahn, & B. A. Staehler, 1995), using 968 community-based participants. Exploratory factor analysis using half of the sample indicated a 1-factor solution that accounted for 55.18% of the total variance. This was confirmed using confirmatory factor analysis with the other half of the sample. The GUS had a Cronbach's alpha coefficient of .81. Concurrent, predictive, and criterion-related validity of the GUS were good, suggesting that the GUS is a valid and reliable instrument for assessing gambling urges among nonclinical gamblers. (PsycINFO Database Record (c) 2010 APA, all rights reserved)