智能代理技术及其在售后服务中的应用

文章主要介绍了一种新的技术—智能代理技术。并在此基础上简要介绍了作者参与的某公司基于多代理的售后服务系统的开发工作,重点介绍了其中的故障技术支持子系统。     

改GE752系列发电机为油田钻井电动机

通过对中海油公司两台美国GE公司5GE-752T5A发电机成功改造为GE公司5GE752AR2A水平钻井电动机,一方面表明系列化电机之间可以相互改造;另一方面为油田钻井维修部门缺少GE752电动机备品提供了一种快速、经济的解决方案.     

东海陆架盆地地震地层学研究

在东海陆架区应用地震地层学方法进行了地震层序划分及地震相与沉积环境的解释。东海陆架盆地北部浙东坳陷第三系沉积主要是陆相环境,始新世时期四湖凹陷西部扇三角洲发育,从始新世到中新世早期受到几次海浸影响;盆地南部台北坳陷第三系沉积主要是海相环境,下第三纪时三角洲、生物礁、滨岸砂体都比较发育。西湖凹陷西部与瓯江凹陷是盆地中最有利的油气勘探区。     

特大城市单元规划编制探索

正金忠民(中国城市规划学会常务理事,上海市城市规划设计研究院副院长、教授级高级工程师,本学术对话主持人):新一轮单元规划为落实城市战略目标、传导底线约束要求、弹性应对未来不确定性,为特大城市总体规划实施管控提供载体,其在编制体系、类型划分、技术方法上逐渐受到重视。首先,必须优化规划编制体系。目前,总规与控规衔接的中间层次主要有分区规划和单元规划两类。分区规划较多在处于增量规划阶段的地区编制,存在实施主体模糊、与控规衔接不畅、     

TC4钛合金高温氧化行为

研究了TC4钛合金在650、750、850℃的循环氧化和25~1000℃范围内的连续变温氧化的氧化行为。采用电子天平或综合热分析仪、XRD、SEM和EDS分析了合金的氧化动力学、氧化膜的物相、表面形貌、截面结构及元素分析。结果表明:650℃循环氧化和连续变温氧化动力学曲线符合抛物线规律、750℃循环氧化符合抛物线-直线混合规律、850℃循环氧化符合直线规律。氧化膜由薄而致密的Al_2O_3外层和厚而疏松的TiO_2内层组成。随氧化温度升高,氧化膜厚度增加,但出现裂纹或剥落。     

Microstructure,Thermophysical, and Ablative Performances of a 3D Needled C/C–SiC Composite

The microstructure, thermophysical, and ablative properties of a 3D needled C/C–SiC composite fabricated by chemical vapor infiltration combined with the liquid silicon infiltration process were investigated. The composite was composed of 64 wt% C, 20 wt% SiC, and 16 wt% Si. The thermal diffusivity in the plane direction was much higher than that in the through-the-thickness direction, while it was reversed for the coefficients of thermal expansion, and the differences reduced with increasing temperature. The linear and mass ablation rates in the oxyacetylene flame were 0.0039 mm/s and 0.0016 g/s on average, respectively. Various ablation processes including sublimation, thermochemical denudation, and oxidations occurred in different sections.     

间接驱动,高收缩内爆实验的数值模拟

给出了二维Ｌａｒｅｄ－Ｉ程序对Ｎｏｖａ激光聚变装置进行的若干间接驱动高收缩内爆实验的数值模拟结果，并与实验观测结果以及ＬＡＳＮＥＸ程序的数值模拟结果进行了对比，结果符合得相当好。     

Rural energy and fuel forests in China

The structure of rural energy consumption for living (domestic) in China is presented based on the nationwide survey conducted from 1986 to 1987. The fuelwood energy consumed amounted to 29% of the totally consumed living energy. The average deficit of fuelwood supply was about 25% for the whole country. The reasonable exploitation of fuelwood resource was 265 Mm³, while the actual fuelwood consumption was 355 Mm³. A fuelwood demand of 443 Mm³ by 2000 was predicted based on a model. Another 4.2 Mha of fuel forests need to be established. The main problems existing in the management and utilization of fuel forests in China are analyzed, and some recommendations are presented.     

On background Cells during the Analysis of Bulk Forming Processes by the Reproducing Kernel Particle Method

The reproducing kernel particle method based on the irreducible flow formulation is utilised to perform the numerical simulation of bulk metal forming processes. Emphasis is given on analysing the influence of employing triangular or quadrilateral background cells on the predictions of material flow, forming load and distribution of strain. A new proposal to smooth the distribution of average stresses during stress computations in the background cells is also included. The effectiveness of the proposed method is discussed by comparing its numerical predictions with a benchmark test case, finite element calculations and experimental data. The benchmark test case is included with the objective of illustrating the influence of several theoretical and numerical subjects such as; order of the basis correction functions, dimension of the compact support and computation of the volume associated to each nodal point. Experimental data was acquired from metal forming controlled laboratory-based tests that were designed so that the proposed method could be tested on its ability to efficiently handle large plastic deformations. It is shown that adaptive arbitrary triangular background cells are capable of efficiently handling large plastic deformations without remeshing.     

发酵火腿的生食安全性与分类特征

火腿经过发酵,可以杀死腿肉中的寄生虫和致病菌,腿肉蛋白质发生变性和水解。发酵火腿可以生食并具有较低的食盐含量。发酵火腿应在控温、控湿和良好的卫生条件下生产。