网络时代大学生思想政治工作面临的问题及对策

从网络化的社会特点着手，对网络化给大学生思想政治工作所带来的问题及其成因进行了深入分析和探讨，并就如何做好网络化条件下大学生思想政治工作提出了相应的对策。     

电流变体及其在机械装备中的应用

电流变体是一种在外加电场作用下表现粘度发生显著变化的流体。近年来，作为一种智能流体引起研究人员的广泛重视。阐述了电流变体的组成、作用机理及其性质。在此基础上，研究了电流变体在机械装备中的应用。结果表明，将利用电流变技术设计的器件应用到机械装备中，可明显改善装备的技术性能指标。     

40Ar-39Ar ages of the Louzidian-Dachengzi ductile shear zone near Chifeng,Inner Mongolia and their tectonic significance

The Louzidian normal fault occurs as the eastern detachment fault of the Kalaqin metamorphic core complex. Field observations and microstructural analyses reveal that the Louzidian-Dachengzi ductile shear zone developed in its lower-plate was genetically related to sinistral strike-slips and extensional faulting. Two samples from this ductile shear zone yield 40Ar-39Ar plateau ages of 133 Ma (Bi) and 126 Ma (Kp), which are concordant with their isochron ages. The plateau age of 133 Ma (Bi) records the formation age of the ductile shear zone. The inconsistent relationship between the earlier strike-slip ductile shear zone and the later normal fault makes the Kalaqin Quasi-metamorphic core complex distinctive from Cordilleran metamorphic core complex. These ages provide important geochronological data for putting constraints on the formation age and genesis of such ductile shear zones.     

动力设备综合实验平台的计算机模拟

设计了动力设备综合实验平台，该平台含制冷压缩机性能实验、冷凝器传热性能实验、制冷系统循环性能实验、风机和水泵性能实验，并对其计算机模拟系统的关键技术进行了研究、分析，该模拟软件采用Mi-crosoft SQL Server数据库，利用VB6.0开发，具有良好的运行效果。     

近固溶度高温析出对7055铝合金时效强化和应力腐蚀的影响

对7055合金采用先高温固溶后降温析出处理,通过光学显微镜、TEM观察和力学性能测试,分析了固溶后高温预析出处理对7055铝合金显微组织及力学性能的影响.研究结果表明:先高温固溶后再进行降温处理,在近固溶度条件下于晶界处产生预析出,并提高了后续时效状态下晶界析出相不连续分布的程度;这种预析出在保持高强度和高塑性的同时,可以改善合金的应力腐蚀抗力.     

节能无功补偿装置在电厂循环水泵电机上的应用

介绍了无功补偿装置的概念及节电原理，讨论了采用无功补偿装置在循环水泵电机上的应用，并根据电机的实际运行情况，定量地分析了其节能的技术经济性。     

SHRIMP U-Pb zircon geochronology of Yangfang aegiriteaugite syenite in Wuyi Mountains of South China and its tectonic implications

In addition to the wide spread peraluminous granites, some alkaline or alkali-rich intrusive rocks were recently observed in the Wuyi Mountains. The Yangfang aegiriteaugite syenites in the Wuyi Mountains are strongly enriched in light rare earth elements (LREE), K, Ba, Ga, Zr and Y. What is more, differentiations of REE are obvious. In addition, the Yangfang aegiriteaugite syenites have also some characteristics similar to A-type granite. Zircons are selected from the Yangfang aegiriteaugite syenites for Sensitive High-Resolution Ion Microprobe (SHRIMP-Ⅱ) U-Pb geochronology study. 15 analyses give concordant 206Pb/238U ages in a narrow range of 233—249 Ma, which correspond to a single age population with a weighted mean 206Pb/238U age of 242 4 Ma, which records the crystallization time of the aegiriteaugite syenites. It is suggested that: (1) there were early Triassic peralkaline intrusive rocks in South China; (2) the early Indosinian extension event was probably active in local area, South China. This discovery provides a new insight for farther understanding of 揑ndosinian orogeny in South China.     

Fission track age of granite batholith from Southern Tibet:implications for the plateau uplift

Fission track (FT) ages of apatite and zircon from four granite batholiths from Lhasa and Shannan areas are measured.The FT ages of apatite range from 3.2±8.3 Ma, corresponding to the uplift rates of 0.12±0.20 mm·a~(-1) during this period. The upliftheight is 580m, showing that there is not large-scale rapid uplifting in southern Tibet from 3.2 to 8.3 Ma. The zircon FT ages of Lhasabatholith are 25.9±1.7 and 32.7±2.8 Ma, yielding an uplift rate of 0.08 mm·a~(-1) between 26 and 33 Ma. Combining this work withother studies, it is suggested that the average uplift rate in southern Tibet is low from the time of collision between India and Asian conti-nents to ～3Ma. The uplift of Tibetan Plateau seems to have finished in multi-stage processes with varied rates.     

DME/P精度评估

精密测距系统(DME/P)是国际上新开发的无线电导航系统,它与微波着陆系统配合,为进场飞机提供精密进场着陆引导。介绍了对DME/P系统进行测试的3种典型测试飞行剖面图。对测距误差的划分方法以及精度的分布特点作了详细分析,提出用合理的数字滤波软件和数据处理软件方法对其误差实现有效分离,并进行了飞行验证,对其测距精度进行了连续动态的准确评估。     

双动人工股骨头置换治疗老年股骨颈骨折

为探讨双动人工股骨头置换治疗老年股骨颈骨折的疗效，对22例老年股骨颈骨折患者采用髋关节后外侧切口，假体用骨水泥固定。结果，22例均得到随访，最长4年，最短6个月，优10例，良8例，中3例，差1例，无假体松动、断裂等，股骨头均在位，提示双动人工股骨头治疗老年股骨颈骨折疗效好，能早期负重行走，关节功能好，应优先选用。