变幅等速肌力矩测试的前置效应及其机制

全幅或定幅等速肌力矩测试结果中某一时点的数据不能很好地反映运动实践中与该时点相对应的关节解剖位相的肌肉功能性态.变幅等速测试中由于起始角不同造成的肌肉收缩初长度各异是影响肌肉功能的重要因素,是一种前置效应.测试结束角不同不会产生显著影响.建议等速测试按不同技术动作、不同运动幅度、不同运动速度进行设计.     

发挥英语在法语教学中的辅助作用

语言迁移分为正迁移和负迁移，在国内高校中，对于法语学习而言，英语迁移甚至大于母语迁移。本文从两种语言的语音、词汇、语法、交际文化等层面的共同点和不同点入手，采用多种外语教学法结合的教学实践，促进英语正迁移，避免负迁移，使英语在法语教学中起到辅助作用。     

碳纤维增强有机一无机高分子烧结合金型新材料的研究──（Ⅲ）有机高分子含量及烧结方法的影响

研究了不同有机高分子含量对碳纤维增强ＳｉＣ／酚醛复合体的成型工艺性能、烧结合金的亚微形态及性能的影响。同时，又探讨了不同烧结方法对烧结合金亚微形态及性能的影响。     

我国轻工业的技术引进与后发效应的综合分析

技术引进是世界各国利用外部资源发展本国经济的一个重要途径，特别是对于发展中国家，更是加速改造本国技术基础，调整产业结构，提高本国生产能力和出口能力，发挥“后起国效应”（后发效应）的一个不缺少的重要条件，文章从学习曲线，技术周期，产品周期，技术差距及产业结构变化等方面，综合分析技术引进对我国轻工产业后发效应的作用与影响。     

2,6-二甲基-3,5-二氯-4-吡啶醇的合成及其抗球虫作用的研究

以双乙烯酮为原料,经二聚合反应,得脱氢醋酸。再由脱氢醋酸分别经水解、氨化、氯化反应(总收率26.97%)或高压氨化、氯化反应(总收率39.52%)制得文题化合物(m.p.345℃)。药理试验表明其毒性较低(LD_(50)>10g/kg)。用作饲料添加剂可明显提高鸡的增重率,降低死亡率,防治球虫病。     

利用密勒(Miller)定理分析放大电路时应注意的问题

本文主要论述了用Miller定理在分析放大电路时所起的特殊作用,Miller定理条件转换问题,以及“Miller定理等效”的适用范围。     

高效液相色谱－微波等离子体炬发射光谱联用研究

以气动雾化和超声雾化二种进样方式，考察高效波相色谱－微波等离子体炬原子发射光谱（ＨＰＬＣ－ＭＰＴ－ＡＥＳ）联用的微波等离子体炬原子发射检测器的分析性能．并应用于实际样品分析．     

尼古丁-FET传感器的研制

尼古丁是烟草中最重要的生物碱。本文报导以四苯硼酸尼古丁缔合物为活性材料,研制了尼古丁场效应管传感器,测试了器件的性能参数,获得满意的结果。其线性范围在10~(-1)～10~(-4)mol/l,斜率为56±1mV/pc,适用的 pH 范围在5.5～7.5之间。     

Concentrations of “elemental carbon” in samples from the Peking Man Site at Zhoukoudian and the possibility of their application in the development of evidence for the use of fire by humans

Elemental carbon?EC) is a C-rich, O-H-S-N-depleted substance that is necessarily produced in the process of combustion. Due to the logn-term use of fire by cave-inhabiting ape-men, considerable amounts of 揺lemen-tal carbon?would be necessarily left behind in the corre-sponding strata inside the cave. The sepaation of EC was effected by the chemical method and the contents of carbon were determined on an element analyser and a self-made measuring system. The concentration of Ec in the hearth,the exhibited ash samples collected from near the hearth un-earthed in the 1930s, and the three samples of accumulated material collected from the tenth bed are 43.74%, 1.77%,3.88%,1.87% and 1.11%,respectively; those of the equivalent samples from the tenth bed outside the cave and samples from the fourth and seventh beds are at least one order of magnitude lower than the former抯. The above re-sults show that the sampling location of the tenth bed may be close to the hearth. Sampling over a wider range may lead to the finding of a location where the concentrations of EC are corresponding to the maximum values of EC in the hearth. The determination and study of EC may provide new evi-dence for the use of fire by Peking Man.     

Blue emission from hydrogen-containing a-Si：H／SiO2 multilayers and the investigation of its mechanism

A series of hydrogen-containing a-Si:H/SiO2 multilayers with different a-Si:H sublayer thickness were fabricated by layer-by-layer deposition and in situ plasma oxidation in a plasma-enhanced chemical vapor deposition system (PECVD). Optical induced blue emission from the samples was observed by the naked eye at room temperature, which has never been reported in the luminescence study of Si/SiO2 multilayers up to now. Both the photoluminescence (PL) peak and the absorption edge show a blue shift as the a-Si:H sublayer thickness decreases. The origin of the blue emission and the effect of hydrogen are discussed.