高温高压下多种气体在储层岩心中吸附等温线的测定

利用自行研制的XF1型高温高压气体吸脱附测试仪,结合一台色谱分析仪(HP6890),一套抽真空系统,分别测定了N₂、CH₄、C₂H₆、C₃H₈、nC₄及其混合气体在三个岩心中的吸脱附等温线共计42条(单组分30条,累计测试点516个;混合气12条,累计测试点203个),以及吸附平衡后混合气的自由气相组成、吸附相组成和各组分的吸附等温线各48条(累计测试点431个).测试的温度为50.5℃.实验结果表明:①储层岩心介质对烃类气体的吸附现象是客观存在的,不容忽视;②仅就测试所得的数据来看,如果忽略其它因素,可以初步估计,不考虑吸附的砂岩储层气藏的计算储量将比考虑吸附少5%以上;③岩心-气体吸附体系的吸附能力除受压力影响外,更受到储层介质、岩石成分、结构和物性性质的影响,除此之外,还受到多组分气体中重烃组分数目、摩尔含量等的影响;④多组分气体组分相对吸附量能有效地表征多组分气体中各组分气体的竞争吸附能力大小,依据这个指标可将五元多组分气体体系中各组分气体按其竞争吸附能力由强到弱排序为nC₄>C₃H₈>C₂H₆>CH₄>N₂.     

Ecological aspects of the manufacture and application of highly pure liquid substances

The action mechanism for aggressive and highly pure media on fluoropolymer constructional elements is assumed to consist of two basic microeffects: destructive changes in the fluoropolymer and contamination of the environment. Our approach to a quantitative estimation of the physicochemical stability is based on logic similar to that of a thermodynamic model of a two‐component system. A fluoropolymer and changes in its microstructure are considered the first component of the system. The second component is composed of liquid media contaminated with fluoroorganic compounds extracted from the fluoropolymer. The proposed methods for delivering aggressive and highly pure fluids to consumers allow the exclusion of pollution from working areas with gaseous products through an exception to a number of intermediate stages of product transport. The discussed principles allow the creation of a modern, highly effective, and safe (with respect to the ecology and raw materials) production of aggressive liquid chemicals for consumers. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 85: 906–910, 2002     

A novel method of suppressing the inrush current of transformers by using a series‐connected voltage‐source PWM converter

This paper proposes a novel method of suppressing the inrush current of transformers. A small‐rated voltage‐source PWM converter is connected in series to the transformers through a matching transformer. As the connected PWM converter serves as a resistor for the source current, no inrush phenomena occurs. The required rating of the PWM converter, which serves as the damping resistor for the inrush phenomena, is 1/400 that of the main transformers in single‐phase circuits. In three‐phase circuits, it is 1/900. The basic principle of the proposed method is discussed. Digital computer simulation is implemented to confirm the validity and excellent practicability of the proposed method using the PSCAD/EMTDC. A prototype experimental model is constructed and tested. The experimental results demonstrate that the proposed method can perfectly suppress the inrush phenomena. © 2006 Wiley Periodicals, Inc. Electr Eng Jpn, 157(4): 56–65, 2006; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/eej.20174     

南洋河水库粘土心墙风化料坝设计与施工控制

结合南洋河水库大坝为粘土心墙风化料坝坝址的自然地形条件，心墙土料不均匀、坝壳料渗透性差的特点，从坝体剖面结构设计、各坝料设计、质量控制标准及基础处理等方面作了分析介绍，以期对类似条件的工程有所借鉴。     

论基于技术资本的核心创新能力

首先界定技术资本的概念，然后以“核心能力特征参量罗盘”作为指导，全面展开论述企业核心创新能力相应4方面的投资策略，最后，运用一个案例具体展示基于技术资本核心创新能力的提升经验。     

Effects of fluoropolymer addition to an epoxy on scratch depth and recovery

Samples were prepared by addition of a fluorinated poly(aryl ether ketone) (12F-PEK) to a commercial epoxy resin and curing at either 24 °C or 70 °C. The concentrations of fluoropolymer in the samples were 0, 5, 10, 20, 30, 40, and 50%. Phase inversion facilitates the formation of more and more smooth surfaces for scratch testing with increasing fluoropolymer concentration. A progressively increasing load from 0.03 N to 12 N was administered with a diamond tip to the surfaces of the samples; depths were determined within ±7.5 nm. The original scratch depth is a function of the fluoropolymer concentration. Scratch recovery (healing) reaches values up to 95%. Plots of the residual depth versus concentration of the fluoropolymer at 4, 6, 8, and 10 N reveal minima for all forces and both temperatures. Addition of only 5% or 10% 12F-PEK improves the scratch recovery significantly. The results are explained by changes of material morphology with the fluoropolymer concentration. Electronic Publication     

压水堆堆芯换料设计优化的研究

讨论压水堆堆芯换料设计优化问题，并研制一套实用的换料优化软件包，可用于低泄漏、外－内和改进的外－内装料方案的优化。在低泄漏方案优化时，利用哈林原理将燃料组件布置与可燃毒物配置的优化问题脱耦成两步优化问题。先用线性规划方法进行无可燃毒物时燃料组件布置的优化，然后再用可变容差法寻找可燃毒物的优化布置。应用该软件对秦山核电厂首次难芯换料方案进行了优化，提出了可供参考的一些优化布置方案。     

关于混凝土钻芯取样法有关标准的讨论

本文对国内不同行业有关混凝土钻总取样方法的标准进行了讨论，供月行在使用和修订相应标准时参考。     

精密深孔表面环状硬挤条纹的产生机理与控制

本文建立了不同条件下环状硬挤条纹的生成模型,详细分析了其产生机理.用理论解析和试验验证了所建模型的可靠性,最后提出了控制其产生的方法.     

型芯与推板双锥面配合脱模机构设计

介绍了一种型芯与推板双锥面配合脱模机构设计，分析了结构特点及制造加工工艺性。