回转窑常见故障及应对措施

提高碳酸钡的产量、实现优质高产稳产的重要条件是保证回转窑的开车率。分析了回转窑的各种故障,并拿出最优方案加以解决。     

GK1C型机车液晶显示器故障分析处理的思路与对策

根据对GK1C型机车触摸式液晶显示器故障处理方法的统计，从液晶显示器结构及工作原理上进行分析，提出了液晶显示器故障分析处理的思路与对策，建议购入一些液晶显示器易损备件对液晶显示器进行修复使用。     

非线性时序模型在机械系统故障诊断中的应用

提出一种基于非线性自回归时间序列模型(gereral expression for linear and nonlinear auto-regressive model,简称GNAR模型)的机械系统状态识别与故障诊断方法.利用采集系统工作过程中的特征信号建立GNAR模型；用主成分分析策略生成模型特征量,对训练样本的特征量进行识别和分类,得到各种参考模式；将几何距离判别函数作为状态分类的原则,根据待判系统特征量与各类参考模式的Euclide距离进行状态识别和故障判别.对车床颤振试验数据及高速离心空气压缩机故障数据的分析表明,该方法快捷、高效,诊断成功率较好,具有良好的工程应用前景.     

80万t／a戴维甲醇装置磁力泵首次联运故障的原因分析与对策

中国海洋石油化学股份有限公司新建80万t／a戴维（DAVY）甲醇装置采用大功率磁力泵输送介质（在国内甲醇项目中尚属首次）。介绍了磁力泵的基本原理、结构特点和设备参数；分析了磁力泵在甲醇装置首次水联运过程中出现泵体振动等故障的原因；提出了相应的解决措施并取得较好效果，磁力泵振动值下降到4mm／s。     

Structure tensor coherence computation method of seismic data

在研究前三代地震相干算法的基础上，提出了一种基于地震数据结构张量的相干属性计算方法和流程。该方法将地震数据瞬时相位作为数据输入，利用复地震道数据信息对地震数据结构张量的偏导数求取进行平滑处理，较好地解决了由于地震资料中噪声的存在而产生的计算不稳定性，且利用纵、横向的瞬时波数计算可以得到地震数据的视倾角和方位角属性体。实际三维地震数据的计算结果验证了地震数据结构张量相干计算方法的有效性，计算出的相干属性体分辨率更高，断层的展布形态更清晰。     

彼德斯重介质分选槽常见故障及其改进

介绍了彼德斯重介质分选槽的结构和工作原理及其在我国的应用情况，总结了重介质分选槽常见的各种故障，提出了解决各种故障的改进方法，降低了故障率，方便了检修，以及该项设备今后的发展方向与发展建议。     

Prevalence and predictors of posttraumatic stress in women undergoing an ovarian cancer investigation.

This study assessed posttraumatic stress disorder (PTSD) in women being investigated for an ovarian cancer diagnosis to determine prevalence and factors predicting PTSD in these patients. Participants (N = 75) were recruited from the Princess Margaret Hospital in Toronto, Ontario, after their initial clinic appointment and given a prediagnostic assessment that included measures of PTSD, depression, stress and pain. One month later, patients received an identical postdiagnostic assessment. No cases of clinical PTSD were detected, although 13.6% of participants were identified with subsyndromal PTSD. Multiple regression analyses showed that those participants reporting significant baseline depressive symptoms, definitively diagnosed with ovarian cancer, and with shorter treatment wait times were more likely to have a significant increase in PTSD symptoms. Supportive interventions aimed at reducing PTSD symptoms, launched prior to an ovarian cancer diagnosis, might optimally be directed at patients with baseline depressive symptoms and those with shorter treatment wait times. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

108t矿用汽车动力总成耦合故障分析

108 t电动轮自卸车动力总成是运矿车正常生产运行的动力源,是构成车辆最根本的总成设备,动力总成使用、维护、检修的好坏,直接关系到运矿汽车的经济效益,十几年来对电动轮自卸车动力总成各种故障进行了综合分析,积累了经验,通过不断的技术学习,对电动轮耦合工艺技术进行了改进,延长了动力总成的使用寿命周期,提高车辆的台年效率。     

A method for fast simulation of multiple catastrophic faults in analogue circuits

The paper offers an efficient method for simulation of multiple catastrophic faults in linear AC circuits. The faulty elements are either open circuits or short circuits. The method exploits the well‐known Householder formula in matrix theory to find the node voltages deviations due to the perturbations of some circuit elements. The main achievement of the paper is a systematic method for performing the simulation of all combinations of the multiple catastrophic faults. The method includes two new procedures enabling us to find very efficiently the node impedance matrix of the nominal circuit and inverses of some matrices corresponding to different fault combinations. The procedures are the crucial point of this approach and make it very efficient. Consequently, the amount of the computing power needed to carry out all the simulations is significantly reduced. Numerical examples illustrating the proposed approach are provided. Copyright © 2008 John Wiley & Sons, Ltd.     

冷冲压模具故障浅析

介绍了冷冲压模具工作过程中常见的故障,分析了造成故障的内在原因,探讨减少和避免各类问题的工艺方法。该文对生产实践中同类问题的解决具有一定的借鉴作用。