连续梁的简便计算

利用三转角方程，对连续梁的内力进行精确的计算，该方法简捷明了，便于应用。     

流量自动控制的设计与实现

文章通过分析多相流模拟井的实际工作要求 ,提出了简单实用的流量自动控制模型。应用成型的计算机数据采集和控制模块及稳定可靠的流量控制部件 ,实现了各相流量的自动控制过程。该流量自动控制系统调节精度高、速度快、整体造价低 ,在实际应用中取得了良好的效果。     

高速动车组驾驶室设计中的人机界面分析

在高速动车组驾驶室的人机关系分析与设计中,驾驶室的空间尺度关系、视野、操纵设备的分布和人机环境等因素,将直接影响列车行驶的安全、效率、舒适和健康。应用人机关系分析与研究,合理地配置驾驶室室内环境以及操作和显示设备,将有效地提高司机操作的安全性、便利性和作业效率,从而给司机提供一个方便舒适的操作空间,减少体力、心理疲劳,降低人为误操作带来的安全隐患,提高系统运行的可靠性,使人-机匹配达到最优,以保证车辆行驶的安全。     

金选别工艺的发展与深化

本文阐述了充分考虑矿石性质,探索出混合浮选的分步流程,恰当的施用多元扑收剂所产出的“协同效应”,稳定和强化选别工艺,收到提高选金技术指标的效果。     

水泥散装无人值守系统数据管理

数据的实时性、准确性、全面性和灵活性是水泥散装无人值守高效、稳定、可靠运行的保证。本文主要以某水泥集团散装技改为例,讨论散装无人值守系统中运用的技术手段和对数据的管理。     

热塑性复合材料用混纤预浸料特征

本文对热塑性复合材料用预浸料的结构及其在复合材料成型加工中的浸渍性能进行分析.     

Study on the synthesis of thiirane

In this study, a thiirane resin was synthesized by the reaction of corresponding epoxy resin with KSCN. The synthetic conditions influencing the conversion of epoxy group were systematically investigated, such as the reaction temperature, reaction media, reaction time and the ratio of KSCN to epoxy group. It was found that the conversion of epoxy group increased with the increasing reaction temperature, improving the solubility of the mediate, extending reaction time, and the enhancing ratio of salt (KSCN) to epoxy group. Wherein, the reaction temperature and the ratio of the KSCN to epoxy group were more effective. For example, when the molar ratio of KSCN to epoxy group was equal to 2.0, the conversion of epoxy group got the maximum value, 0.65. In addition, the hot plate method was used to measure the gelling time of the resultant thiirane resin at different temperatures. It was found that the gelling time was reduced to 47–85% times as the corresponding epoxy resin depending on the conversion of the epoxy group, and the curing activation energy was diminished from 39 kJ/mol of epoxy resin to 17 kJ/mol. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 101: 4023–4027, 2006     

PA66聚合釜底阀电气控制系统的改进

详细介绍了尼龙(PA)66聚合釜底阀的液压及电气控制原理,分析了国产PA66聚合釜底阀电气控制部分存在的问题,并在现有电气控制图的基础上进行了改进,达到了预期效果。     

灰口铸铁给水管道内壁腐蚀试验

目的 灰口铸铁给水管道运行过程必然造成内壁发生不同程度的腐蚀,通过实验研究内腐蚀各影响因素,分析灰口铸铁供水管道腐蚀变化规律.方法 在调查分析埋地供水管道腐蚀状况及腐蚀原因的基础上,对灰口铸铁试片进行室内挂片实验,分别考虑不同溶解氧、pH值、余氯和流速的条件下的腐蚀速率.同时对灰口铸铁管的内壁腐蚀产物进行电子扫描电镜分析和X-射线衍射分析,确定内壁腐蚀结构成分.结果 pH＜5和pH＞11时腐蚀速率分别呈线性递增和线性递减趋势,水中溶解氧在初始50 h内消耗速度呈直线增加变化,随后DO消耗速度几乎不变,余氯对腐蚀过程有促进作用,流速与铸铁管道的腐蚀速率成正比例关系.结论 pH值、溶解氧、余氯、流速和侵蚀性CO2是引起灰口铸铁供水管道内腐蚀的主要原因.     

Ultra-low latency and omit-iteration CORDIC algorithm

The pipeline structure Coordinate Rotation Digital Computer (CORDIC) algorithm improves its precision by increasing the stages of iterations, which leads to a large delay, excessive consumption of hardware and limits its applications.The omit-iteration CORDIC algorithm is proposed to solve this problem by using the methods of binary to bipolar recoding, folding angle domain, merging iteration and optimizing the lookup table. Simulation results show that this method needs only two clock cycles to get the output and also makes improvement on the hardware consumption and its precision, especially having privilege to the application on high speed and real-time occasions compared with other realization of the CORDIC algorithm.