机器人骨骼-肌肉系统工程模拟的动态分析

用振动学理论对仿人机器人骨骼-肌肉系统工程模型进行了分析，并提出了一种控制振动的方法，提高仿人机器人运动精度和缩短达到稳定的时间，同时阐述了这种方法的可行性。     

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天然气脱除Ｈ２Ｓ和ＣＯ２是天然气净化领域经常遇到的问题。Ｈ２Ｓ与醇胺的反应属瞬间质子反应，ＣＯ２与醇胺的反应则复杂得多，醇胺溶液对Ｈ２Ｓ的选择性分离主要依靠ＣＯ２与醇胺的反应速度差异来实现。文章介绍了伯胺，仲胺，叔胺及空间位阻胺溶液反应的机理和动力学。     

Lower bounds on the information rate of secret sharing schemes with homogeneous access structure

We present some new lower bounds on the optimal information rate and on the optimal average information rate of secret sharing schemes with homogeneous access structure. These bounds are found by using some covering constructions and a new parameter, the k-degree of a participant, that is introduced in this paper. Our bounds improve the previous ones in almost all cases.     

近10年中国润滑脂产量与品种构成的发展

基于对中国27个润滑脂生产厂的调查统计结果，综述了1992～2001年10年间中国润滑脂产量、生产规模、品种结构及包装形式的发展变化情况，展望了今后的发展趋势。     

被动累积~(222)Rn-~(222)Rn探测器

本文采用 2只扩散杯 ,一只选择渗透率较大的滤膜 ,使2 2 2 Rn和2 2 0 Rn能很容易的进入。另一只选择渗透率较小的滤膜 ,该滤膜只允许2 2 2 Rn进入 ,半衰期较短的2 2 0 Rn被阻挡在外面。通过不同滤膜扩散率的差异 ,改变探测器的空气交换率 ,从而达到同时测量2 2 2 Rn和2 2 0 Rn的目的     

Analysis of exclusively kinetic two-link underactuated mechanical systems

Analysis of exclusively kinetic two-link underactuated mechanical systems is undertaken in this paper. It is first shown that such systems are not full-state feedback linearizable around any equilibrium point. Also, the equilibrium points for which the system is small-time locally controllable (STLC) is at most a one-dimensional submanifold. A concept less restrictive than STLC, termed the small-time local output controllability (STLOC) is introduced, the satisfaction of which guarantees that a chosen configuration output can be controlled at its desired value. It is shown that the class of systems considered is STLOC, if the inertial coupling between the input and output is nonzero. Also, in such a case, the system is nonminimum phase. An example section illustrates all the results presented.     

Experimental results of a low-power roadheader driving a gallery with different types of rock at the face

In this paper, the experimental results of a 45-kW and 15-t roadheader excavating a gallery with two different types of rock at the face using two different cutting heads are shown. It is proved that the roadheader works properly with both cutting heads. In comparison with other results in the literature, the principal parameters, i.e. specific energy, cutting rate and tool wear, are at a level that can be considered satisfactory taking into account the low power of the roadheader. On the other hand, the influence of the number of picks, which is the main difference between the two cutting heads, on the operational parameters is shown.     

气体流量对多壁纳米碳管形貌和产率的影响

以CH4为碳源气，以H2为还原气，以纳米NiO-SiO2气凝胶为催化剂，探讨了气相化学沉积法制备多壁纳米碳管工艺过程中，气体流量对产物形貌和产率的影响。实验结果表明，CH4和H2流量保持为2：1，气体总量一定时可以经济地制备出长径比大，形态较好的纳米碳管，且产率较高。     

TEMIC射频卡的速率自适应读卡算法

提出种基于TEMIC射频卡Manchester编码的速率自适应读卡算法,并对该算法进行了说明和示例。