提高涂层防腐性能评价技术的探讨

界面防腐技术是油气田三维大跨度的大型结构群体综合防护治理的主要方法之一，但我国现行的涂层检测方法还存在较大的局限性和失真度，不能反映实际工况下涂层的防护质量。文章指出了我国涂层与防护质量评价技术的现状和与国外的差距，介绍了80年代以来国外在涂层质量评价方面采用的一些新技术和先进的综合评价方法，最后提出了采用表面分析技术和电化学方法相结合的评价技术，以及对现行评价方法的再创造等建议。     

NUMERICAL STUDY ON QUASI- STEADY FLOW OF NONNEWTONIAN FLUID IN SUCK-ROD PUMP

This paper presents a numerical method for simulation of the flow and thecalculated results of the quasi-steady axisymmetrical flow field and pressure distribution on valveball with power-law model for Non-Newtonian fluid in suck-rod pump.We believe the methodcan provide a foundation for further research and improvement of the design of suck-rod pump.     

液相对流对固液界面稳定性的影响

以模型合金丁二腈－乙醇的强制性晶体生长为基础，利用自行研制的液相对流驱动装置，详细考查了液相自然对流及强迫对流作用下，模型合金平界面失稳的动态生长过程，证实了液相的流动加快了液相温度与浓度分布的均匀化，从而增强了液／固界面的稳定性。并且随流动速度的增加，界面稳定性提高。     

中和室脉冲进气的蒙特卡罗模拟及实验验证

对于中和室内的脉冲气体，用蒙特卡罗方法模拟了气体压力沿轴向的分布。并用模拟进气系统和气压瞬时测量系统，对模拟结果进行了验证。得到与模拟结果较为一致的曲线，从而为注入器真空系统的设计提供了可靠的依据。并通过实验结果，给出了气体靶厚的建立时间约为６０ｍｓ。     

Benzylation of thiophene using zinc and iron chloride modified montmorillinite clay

Montmorillinite clays, modified with either Zn(II) or Fe(III) chlorides have been used to catalyze the Friedel-Crafts alkylation of thiophene. High yields (ca. 80%) of 2- and 3-benzylthiophene mixtures were obtained using either catalyst in chlorobenzene or nitrobenzene solvent at 80°C. The ratio of 2–3-products was found to be controlled by their relative stability. Reactions were most rapid in nitrobenzene solution (<5 min) and resulted in formation of the 2-isomer as the only mono-substituted product. This is believed to be the first example in which an alkylation of thiophene has been limited to one regio-isomer.     

Perceptually Grounded Language Learning: Part 2—DETE: A Neural/Procedural Model

In Part 1 of this two-part series, we introduced Katamic memory—a neural network architecture capable of robust sequence learning and recognition. In Part 2, we introduce the Blobs World taskjdomain for language learning and describe the DETE language learning system, which is composed of over 50 Katamic memory modules. DETE currently learns small subsets of English and Spanish via association with perceptual! motor inputs. In addition to Kaiamic memory, DETE employs several other novel features: (1) use of feature planes, to encode visual shapes, spatial relationships and the motions of objects, (2) phase-locking of neural firing, in order to represent focus of atention and to bind objects across multiple feature planes, and (3) a method for encoding temporal relationships, so that DETE can learn utterances involving the immediate past and future. We compare DETE to related models and discuss the implications of this approach for language-learning research.     

数据处理系统性能评价的简单理论模型

提出了一个简单的理论模型．旨在为数据处理系统的性能评价提出一个理论框架．以此框架为基础，可形成实用的简单评估方法．该模型只含两个参数，它们是统计量，可用统计方法确定．     

动能杆定向抛撒散布场仿真

在对目前的新概念定向动能杆反导战斗部作用机理研究分析基础上，利用动能杆条定向抛撒速度及散布规律的工程计算模型进行数值模拟，并与有关文献试验结果相对比，结果表明该计算模型能为工程设计提供帮助。运用该计算模型，采用Shot-Line模型和虚拟现实编程技术，对杆条散布场进行了三维仿真。     

油底壳冲压过程的有限元数值模拟

采用有限元软件MARC，基于更新拉格朗日的弹塑性本构方程建立了一个有限元模型来模拟油底壳的成形过程。模拟得出了油底壳变形过程中板材的应力、应变、摩擦和厚度分布，揭示了成形过程中金属的塑性变形规律，并预测了可能发生失效的区域，为成形工艺设计提供了有效的分析工具。     

金属凝固模拟程序网格剖分模块技术研究

网格剖分是金属凝固模拟程序的重要功能，其生成的三维直角六面体网格为运用有限差分法进行数值模拟计算提供铸件和铸型等实体的空间位置信息。网格剖分模块的关键技术有：STL切片法；将切割面偏移微小量，避免处理奇异点；网格(实体)经过变换矩阵实现轴测投影以及单个网格的可见面判断，整体网格的画家算法消隐观察等。经验证，这些技术的应用能高效地实现网格剖分的功能并可直观地显示网格剖分的结果。