质量检验的管理控制图法

运用一种带有控制界限的质量管理图表，评估工序的稳定状态，从而对工序质量进行监督、调节和控制。     

Trunk deformation in the trotting horse

Reasons for performing study: Estimates of the position of the centres of mass (CM) of body segments are usually extrapolated relative to bony landmarks as determined in cadaver studies. This extrapolation assumes that segments are rigid bodies. Since the trunk represents a large percentage of the total body mass in horses, violation of the rigid body assumption by the trunk segment has important consequences for studying the biomechanics of equine locomotion. Objectives: To assess the magnitude of error in CM position due to deformability of the trunk segment and the timing of these errors during the trotting stride. The hypothesis was that shape changes during a stride are repeatable and predictable. Methods: Forty skin markers were attached in a grid pattern on the trunks of 6 adult horses, with an additional marker attached to each hoof. The markers were tracked using an 8 camera motion analysis system. Each horse was tested at 10 different velocities during trotting. The CM of the trunk was calculated under the assumption of a rigid body, based on 5 spine markers and from the volume encompassed by the 40 markers. The difference between the 2 calculation methods quantifies the effect of trunk deformation on the position of the CM. Results: The trunk changed shape during locomotion in a repeatable manner resulting in cyclic changes in CM position. Amplitudes of the CM displacement due to trunk deformation were equal in magnitude in the transverse and longitudinal directions. In the vertical direction, the CM moved only at half the amplitude. Magnitudes were strongly horse‐dependent. Conclusions and potential relevance: Shape changes in the equine trunk segment in the horizontal plane should be taken into account when modelling locomotion of horses. Amplitudes are horse dependent, complicating the development of correction routines.     

关于半导体中深中心位形坐标图的几个问题

位形坐标图是描述固体中杂质缺陷中心上的电子与晶体耦合引起的多种物理效应的有力工具,在半导体深中心行为的统一描述中常被使用。本文给出了由实验数据建立半导体中深中心位形坐标图的简便方法,分析了位形坐标图中各有关能量值的物理意义和容易混淆之处,指出了由实测数据建立位形坐标图时应注意温度效应这一因素。     

三维轴心轨迹法在输油泵机组状态评价中的应用

定性分析了输油泵机组转子在不同状态下轴心轨迹的运行状况,提出了融合相位及轴心轨迹半径两个指标的多测点、三维轴心轨迹法,从整机角度对输油泵机组进行了整体评价,并定量提取了多个评价指标。通过现场检测试验证明了该状态评价方法的有效性,并分析了运行变化趋势。     

城市公园防灾减灾体系建设研究——以昆明市中心城区公园为例

城市公园具有防灾减灾功能。昆明市中心城区公园,尚未建设统一的公园防灾减灾体系。这些问题归根结底与居民防灾意识淡薄、可用于防灾减灾的公园绿地面积不足、缺乏统一的应急避难设施、缺乏相应防灾减灾规划设计等现状密切相关。针对这些问题,提出昆明市中心城区公园防灾减灾体系建设意见。     

周边进水辐流式二沉池出水方式研究

通过计算流体力学FLUENT6.3.26软件,分别对周边进水辐流式二沉池三种出水方式(中间出水、周边出水和周边和中间同时出水)的沉淀区流态进行了数值模拟,系统研究了三种出水方式沉淀区的速度分布、漩涡形态、驻流区和慢流区的体积分数等。结果表明:为有利周边进水辐流式二沉池污泥沉降,三种出水方式中,周边和中间同时出水最优,周边出水其次,中间出水最差。     

应用茜素-β-D-半乳糖苷快速检验食品中的大肠菌群

用茜素 β D 半乳糖苷琼脂和行标SNO16 9- 1992指定的结晶紫中性红胆盐琼脂 (VRBA)对比检测 13种相关标准菌株和 70份食物样品。二者对标准菌株的检测结果完全一致 ,对食物样品检测结果的符合率也较接近。大肠菌群在茜素 β D 半乳糖苷琼脂中 2 4h内可长成较大的鲜明红色 ,轮廓清晰 ,易于辨认 ,可作为计数食品中大肠菌群的任选方法加以应用     

TS2130深孔钻镗床专用找正装置设计

TS2130深孔钻镗床将工件冒口端装夹在主轴卡盘上,锭尾端装夹在中心架上,但是工件找正时间长。为提高找正效率,设计了专用找正装置。将找正装置一端通过螺纹与刀杆连接,另一端上面放置百分表对短节产品进行找正,将找正工序缩减到3个,将找正时间减少30 min。     

关于木兰林管局国有林场会计监督工作的思考

以会计监督的基本理论为基础,总结归纳了木兰林管局国有林场会计监督中存在着资金监督、资金配置、固定资产管理和预算等方面的问题;同时提出了加强会计内部控制、强化内部成本核算、提高固定资产管理、完善预算管理和提高会计人员素质等方面问题,提高木兰林管局国有林场会计监督效果。