纳微米材料影响环氧涂层耐磨性的试验研究

为了提高环氧粘涂层的耐磨性,本试验通过在环氧胶粘剂中加入纳、微米填料,研究了纳微米填料对环氧胶粘剂涂层耐磨性的影响规律。试验结果表明,加入纳米级填料环氧胶粘剂涂层的相对耐磨性明显优于微米级填料;加入纳微米复合填料其相对耐磨性为正火态45钢的2.57倍,和纯环氧胶粘剂涂层相比,提高幅度可达2.85倍,而仅加入纳米填料的胶粘剂,其涂层耐磨性只增加了1.97倍。     

Non-violent Resistance and Last Resort

It is commonly accepted that recourse to war is justifiable only as a last resort. If a situation can be resolved by less harmful means, then war is unjust. It is also commonly accepted that violent actions in war should be necessary and proportionate. Violent actions in war are unjust if the end towards which those actions are means can be achieved by less harmful means. In this article, I argue that satisfaction of the last resort criterion depends in part upon the likelihood of success of non-violent alternatives to war, and that the actual and potential effectiveness of non-violent resistance means that the last resort criterion of the jus ad bellum and the proportionality criterion of the jus in bello are harder to satisfy than is often presumed.     

船用电缆绝缘电阻自动检测精度的分析与研究

提出了一种实际的船用电缆绝缘电阻检测方案 ,包括信号变换电路和方案的硬件与软件结构 .分析了检测误差产生的主要原因 ,并提出了两种提高检测精度的措施