船舶伙食冷藏装置的安装调试与验收

本文详细介绍了伙食冷装置在船舶上安装、调、验的有关事项。     

移动荷载作用下水稳基层的疲劳分析

文章利用有限元软件Ansys对不同车速、轮胎接地应力、结构层厚度及模量情况下的水泥稳定基层进行了疲劳寿命影响分析。结果表明：（1）随着车速的增大,基层疲劳寿命不断增大;（2）随着轮胎接地应力的增大,基层疲劳寿命逐渐减小;（3）基层疲劳寿命随基层和面层厚度的增大均呈增大趋势;（4）基层疲劳寿命随基层模量的增大而不断增大,随面层模量的增大而逐渐减小。     

铁路客运专线路基沉降特性及其对策

结合路基沉降变形的特点,分析了影响路基沉降变形的因素,并对路基的不同部分和不同土壤的地基提出了可行的处治措施和相应的对策.     

RM80型清筛机晃车处理实践及相关思考

RM80清筛机晃车对其自身行车安全造成严重隐患,且该车型晃车现象越来越普遍,成为不容忽视的问题.通过介绍四台清筛机晃车处理的实践,从处理后效果入手,反思处理方法,进行经验总结和相关思考,寻找更好的处理方案.     

新型防烟阀的研制和应用

该文简要地介绍了船舶空调通风系统用防烟阀的功能、应用及其改进设计。     

一款国产化商用车的转向回正性能分析

引进转向回正的主观评价方法及评判指标,确定此款国产化商用车的转向回正性能的不足,基于影响转向回正性能的系统零部件性能分析,通过台架性能试验结果对比,进口件与国产件装车后性能表现,逐步查找真正导致转向回正性能差的关键因素,并通过改进的国产件在整车上的换装验证,最终提升了此款国产化商用车的转向回正性能。     

Design-Manufacture Interface Relationship Management in Supply Chain

As firms come under greater market pressure, the management of the inter-functional design/manufacture relationship becomes a more important competitive variable. The characteristics of the design-manufacture interface were analyzed, and several methods of the design-manufacture interface relationship management were compared. Based on theories concerned and enterprise practice, how to manage the relationship of design-manufacture interface to reduce the product cost and shorten the time-to-market was demonstrated, finally the competitive advantage was improved.     

Modeling Study of Planar Flexible Manipulator Undergoing Large Deformation

The planar flexible manipulator undergoing large deformation is investigated by using finite element method (FEM). Three kinds of reference frames are employed to describe the deformation of arbitrary point in the flexible manipulator, which are global frame, body-fixed frame and co-rotational frame. The rigid-flexible coupling dynamic equation of the planar flexible manipulator is derived using the Hamilton’s principle. Numerical simulations are carried out in the end of this paper to demonstrate the effectiveness of the proposed model. The simulation results indicate that the proposed model is efficient not only for small deformation but also for large deformation.     

车内空气挥发性有机物浓度测量

利用热脱附-气相色谱/质谱法(TD-GC/MS)对家庭轿车、客车和环境空气中挥发性有机物进行定性和定量分析.结果表明,轿车和客车车内空气中挥发性有机物主要为烷烃和芳烃,分别占轿车和客车的车内空气中挥发性有机物的74.00%和71.88%,家庭轿车内空气中含有较多的含氧化合物;环境空气中TVOC浓度较低,分别仅为轿车和客车TVOC的7.95%和12.05%;轿车和客车车内空气中苯浓度较高,分别为环境空气中苯浓度的4.43倍和5.58倍.     

江门举办邮政行业安全培训班

正为进一步提高邮政行业安全生产责任意识,加强寄递安全管理,江门市邮政局在完成前期对各市、区防恐防暴座谈调研后,于3月上旬举办了全市邮政行业安全生产培训班,对市邮政企业、各快递企业负责人就寄递安全开展工作开展专题培训。培训班邀请了邮政业资深培训师,运用大量案例,从政策法规解读、安全责任、邮件收寄验视及禁寄物品辨析等多方面对寄递安全管理进行