分析天平补正值及其规律的探讨

把摆动式分析天平补正值的变化范围与求法，归结为一个统一的表达式，并作出适应各种变化情况的定量描述。     

肌球蛋白重链可塑性和机械负荷状态对其影响

肌球蛋白重链(Mysion Heavy Chain,MHC)是横纹肌收缩蛋白的重要组成成分。已发现MHC有多种亚型，在不同的机械负荷下可相互转化，呈现出对外界机械信号的高度适应性。机械生长因子(Mechano Growth Factor，MGF)可能在机械负荷和MHC亚型转变间发挥化学桥梁的功能。     

中国医药城建筑节能和绿色建筑示范区建设的实践与探索

泰州中国医药城坚持环境友好、资源高效、生态宜居的绿色发展理念。从推进节约型城乡建设十大重点工程的实施、市政综合管廊建设,从节约集约规模化利用可再生能源到区域生态基础设施的建设以及提高能源的综合利用效率和精细化运行管理等方面进行了实践与探索,取得了一些实践经验和成果。     

工业机器人在数控加工生产线的应用

本设计将工业机器人应用于某产品生产线,对其中的数控加工的取放料过程进行自动化改造和工艺设计,实践证明该设计可以大大提高生产效率和工艺精度,同时还可减少操作工人的用量和工人的劳动强度.     

Seismic behavior of specially shaped column joints with X-shaped reinforcement

To investigate the seismic behavior of specially shaped column joints with X-shaped reinforcement,two groups of specimens with or without X-shaped reinforcement in joint core region were tested under constant axial compression load and low reversed cyclic loading,which imitated low to moderate earthquake force.The seismic behavior of specially shaped column joints with X-shaped reinforcement in terms of bearing capacity,displacement,ductility,hysteretic curve,stiffness degradation and energy dissipation was studied and compared to that without Xshaped reinforcement in joint core region.With the damage estimation model,the accumulated damage was analyzed.The shearing capacity formula of specially shaped column joints reinforced by X-shaped reinforcement was proposed with a simple form.The test results show that X-shaped reinforcement is an effective measure for improving the seismic behavior of specially shaped column joints including deformation behavior,ductility and hysteretic characteristic.All specimens were damaged with gradual stiffness degeneration.In addition,X-shaped reinforcement in the joint core region is an effective way to lighten the degree of cumulated damage.The good seismic performance obtained from the specially shaped column joint with X-shaped reinforcement can be used in engineering applications.The test value is higher than the calculated value,which indicates that the formula is safe for the design of specially shaped column joints.     

光纤光栅传感器在工程结构监测中的探究

新兴的布拉格光纤光栅(Fiber Bragg Grating,FBG)传感技术目前在国内越来越引起工程技术人员的关注,特别在土木工程领域。而在飞行器结构中的应用报道仍然很少,国内飞行器结构的健康监测仍然采用传统的电测法。电测法容易受到飞行器结构在运行中的电磁干扰而影响其精度,并且在小应变下存在零漂现象。新型的FBG传感技术具有抗电磁干扰和无零漂现象,正好可以克服电测法的以上缺陷。本研究为了使FBG传感技术能满足飞行器结构健康监测的需求,采用实验与实践相结合的方法,结果表明FBG应变传感器不仅在等强度悬臂梁应变监测试验中还是在实际机翼静态加载应变监测中都能准确地反映出监测点处的应变变化情况,并且克服了电测法在结构小应变下存在的零漂现象。     

Loading System for Full-Scale Heavy-Duty Support Node Test with Multi-Directional Loading Requirements

This paper presents the design, analysis and experimental study of a loading system for heavy-duty nodes test based on a large-scale multi-directional in-plane loading device, which has been used in a full-scale heavy-duty support node test. Test loads of the support reached 6 567 kN with multi-directional loading requirements, which outrange the capacity of the available loading devices. Through the reinforcement of a large-scale multi-directional inplane loading device, the innovative design of a self-balanced load transferring device, and other arrangement considerations of the loading system, the test was implemented and the loading capacity of the ring was considerably enlarged. Due to the heavy loading requirements, some checking computations of the ring and the load transferring device outranged the limit of the Chinese national code "Code for Design of Steel Structures (GB 50017—2003)", thus elastic-plastic finite element (FE) analysis was carried out on the two devices, and also the real-time monitoring on the whole loading systems during experiments to ensure test safety. FE analysis and test results show that the loading system worked elastically during experiments.     

高分子物理实验教学用凝胶色谱装置的建立

介绍了高分子物理实验教学用凝胶色谱(GPC)装置的试装与调试,在GPC装置试装时对相关配件进行了设计和定制,确定使用无机多孔硅胶作为凝胶,四氢呋喃作为溶剂。对成功组装的GPC装置进行了相关实验技术的讨论,确定装柱方法为干法一次装柱,装柱高度以2/3柱高最为合理,装柱比例1∶1时为最优。给出了虹吸管的体积和测定的敏感波长,并简要介绍了自行编制的数据后处理软件的使用方法。建立的GPC装置不仅扩展了实验室的硬件设备,同时也有利于提高学生的实际动手能力和对测试原理的深入理解。     

液力变矩器液黏零速加载试验系统的研制

介绍一种可以实现液力变矩器零速加载的试验系统。为完成液力变矩器的性能试验,特别是液力变矩器零速工况试验,应用液体黏性传动技术设计了液黏零速加载试验系统。试验系统由动力及其控制系统、液黏测功加载及其辅助系统和测控系统组成。试验系统利用电液比例控制技术实现液黏测功机加载转矩控制,应用虚拟仪器思想实现试验数据采集与处理。液黏零速加载试验系统具有广阔的应用前景。     

基于二次杠杆作用的受弯构件持续加载装置

设计开发了一种适合不同环境下受弯构件的持续加载装置,克服了传统螺杆加载装置荷载不稳定的缺点。通过二次杠杆作用实现加载端荷载放大,采用自平衡体系对试件施加持续荷载,不需特殊的反力装置,杠杆放大倍数可达72～90倍,通过调整吊载大小和放大倍数控制加载端力。逐级增大吊载,采用压力传感器测试加载端力的实际值,获取吊载-力标定曲线。标定曲线呈线性,其实测杠杆放大倍数与理论值一致。采用四套加载装置对18根锈蚀钢筋混凝土梁施加17%、33%和50%的极限荷载,长期试验运行良好。该装置组装方便、适用性强、加载性能稳定,可方便地应用于受弯构件长期性能试验和荷载与环境共同作用下受弯构件耐久性试验。