谈双面光盘的粘合

根据现有的粘接技术和自动化生产线的特点，介绍了ＤＶＤ双面盘粘合胶的选择以及一些实验粘合工艺。     

微波消解/干灰化-分光光度法测定面制食品中的铝

采用微波消解法和干灰化法对面制品进行前处理,用分光光度法测定面制品中的铝含量,建立了微波消解/干灰化-分光光度法测定铝的方法.实验结果表明,本方法前处理简单,检测结果准确度高,精密度好,在0～10μg/25 mL线性范围内:相关系数r=0.999 5,方法检出限为0.2 μg/25 mL,样品的加标回收率在92.0 %...     

用磁性探头检测承受偏心载荷的开口钢环的应力分布

用磁性探头测量了45~#钢制开口环在承受偏心载荷作用下的应力分布,与有机玻璃试样的光弹检测结果基本一致.本工作将探测到的感生电压积分,直接获得磁感强度峰值与待测应力的函数关系.实验证实,在较宽的应力范围内,二者有较好的线性关系,易于作应力标定。     

高功率脉冲染料激光放大器物理设计

从理论研究出发,用激光增益理论得到了在平衡状态下忽略染料分子激发态吸收时,高功率脉冲梁料激光放大器物理设计的简单方法,同时以铜蒸气激光器双侧抽运的平均输出功率52.5W的脉冲染料激光放大器为例,对其物理尺寸进行了模拟设计。     

INVESTIGATION OF THE STRUCTURAL PHASE TRANSITION OF MnBi AND MnBiAl FILMS

Structural phase transition of MnBi and MnBiAl films has been investigated in the tem-perature range of 30-400℃. The transition from low-temperature phase to high-temperature phase occurs in both the films, but the phase transitions appear at different temperatures. According to the measurement of Kerr rotation as a function of thermal annealing and the phase transition process, it is shown that the transition is irreversible for MnBi film and reversible for MnBiAl film under our experimental condition. For this reason, we speculate that the aluminum added in MnBi makes the bonding force of Mn atoms with their neighbors stronger, which may be the cause for the difference of the phase transition between MnBi and MnBiAl films.